ES3050098T3 - Arrangement of scaffolding components for a scaffold - Google Patents

Abstract

The invention relates to an assembly (15.1) of scaffolding components comprising a scaffolding post (17.1) with a bracket (18.1) and a guardrail element (19.1). The guardrail element includes a guardrail strut (21.1) and a fixing hook (23.1). The bracket (18.1) includes a retaining wall (34.1) to secure the guardrail element (19.1) against lateral removal from the bracket (18.1) in the direction opposite the scaffolding post (17.1). The bracket (18.1) includes a first transverse connecting element (35.1.1) to support the first guardrail element (19.1) and a second transverse connecting element (35.1.2) to support a second guardrail element. The retaining wall element (34.1), the first transverse connecting element (35.1.1), and the second transverse connecting element (35.1.2) define a first housing space (38.1) where the fixing hook (23.1) of the guardrail element (19.1) is housed, which rests on the first transverse connecting element (35.1.1). The first transverse connecting element (35.1.1) and the second transverse connecting element (35.1.2) are directly connected to the first scaffolding post (17.1) by welding, so that the first housing space (38.1) is also defined by the first scaffolding post (17.1). Alternatively or additionally, the first support (18.1) can be manufactured as a single piece or formed as a single piece.

Description

[0001] DESCRIPTION

[0003] Arrangement of scaffold components for a scaffold

[0005] The invention relates to an arrangement of scaffolding components for a scaffold, in particular a modular scaffold, preferably a frame scaffold, having the features of the preamble of claim 1.

[0007] Technological background and state of the art

[0009] Scaffolding is used in construction and industry to carry out work in locations inaccessible from the ground. A distinction can be made between two types of scaffolding: integrated scaffolding systems and interlocking tubular steel scaffolding systems. Integrated scaffolding systems are working and protective scaffolding made up of prefabricated components in which some, or all, of the system's dimensions are predetermined by means of connections or fasteners fixed to the components. There are two main types of integrated scaffolding systems: modular scaffolding and frame scaffolding. Integrated scaffolding systems, or modular systems in the scaffolding construction sense, are scaffolding systems whose vertical platform systems consist of scaffolding supports. Non-removable, prefabricated joints are fixed at regular intervals (modules) for attaching other scaffolding components. Frame scaffolding consists of prefabricated components whose load-bearing structures are vertical and/or horizontal frames. Steel tubular scaffolding is composed of longitudinally and surface-oriented scaffolding layers made of steel tubes, couplers, and other system-independent scaffolding components. What all these types of scaffolding have in common is that the horizontal components, also known as crossbeams and stringers, are attached to vertically arranged scaffolding tubes, also known as scaffolding supports or uprights. For added safety, diagonally extending scaffolding tubes, also known as diagonal braces, can be attached for reinforcement.

[0011] Scaffold platforms can be attached to the horizontal components of the scaffold, which form working and parking surfaces. Scaffold platforms may be designed to have several overlapping levels. The space formed by four vertical scaffold uprights, four crossbeams, and four longitudinal stringers is called a scaffold span.

[0013] Frame scaffolding uses scaffold frames connected to each other by platform sections. Each scaffold frame consists of two scaffold uprights firmly joined together by at least one crossbeam. The assembly of a frame scaffold composed of scaffold frames is generally carried out as follows: First, two vertical scaffold frames are positioned a certain horizontal distance apart. The scaffold frames are then joined at a predetermined height by scaffold platforms. The arrangement of two scaffold frames and the scaffold platforms connecting them is called a frame scaffold. For added safety, a guardrail or multiple guardrails may be installed between adjacent scaffolds. At least one guardrail is installed at hip or back height, for example, one meter above the platform of a first-floor scaffold. This first guardrail ensures that a person cannot fall from the scaffold platform. A second guardrail, also known as a knee guard, can be installed between neighboring scaffolds to further improve fall protection. This second guardrail is typically positioned midway between the first guardrail and the scaffold platform, for example, 50 cm above the scaffold floor. A toe board can also be installed between the uprights of neighboring scaffolds to ensure that objects are not dropped from the scaffold platform but are instead retained by the toe board.

[0015] A scaffold component arrangement for a construction scaffold of the type mentioned at the beginning has been disclosed from WO 2021/194336 A1. This arrangement comprises a guardrail bracket formed by ten separate components, namely, a mounting plate, four cross bolts, two tilting levers, two pivot shafts, and a retaining plate. The mounting plate is used to mount the guardrail bracket to a scaffold upright. The lower retaining plate is used to secure the guardrail element against pulling it sideways from the guardrail bracket in a transverse direction from the scaffold upright. The four cylindrical cross bolts, of which the two upper cross bolts are also designated as the cross-jointing element and the safety element, respectively, and of which the two lower cross bolts are also designated as the fixing protection, are fixed to the mounting plate on a first flat side of the mounting plate. All the cross bolts extend parallel to each other vertically away from the mounting plate in the same direction. The lower retaining plate is attached to the two lower cross bolts of the four cross bolts. The two lower cross bolts are arranged at the same first height and a first horizontal distance from each other. A rocker arm of the rocker lever is attached to each of the two upper cross bolts of the four cross bolts, such that it can rotate relative to its associated upper cross bolt by means of a pivot axis. The two upper cross bolts are arranged at the same second height and a second horizontal distance from each other, corresponding to the first horizontal distance. Each upper cross bolt is arranged at the same vertical distance from its associated lower cross bolt. The four cross bolts are arranged at imaginary corner points of an imaginary vertical rectangle.

[0016] From the applicant's document DE 101 12369 A1 and parallel document WO 02/066765, fastening devices for the detachable joining of up to two guardrails of a scaffolding system of the applicant's legal predecessor have been disclosed. The fastening devices are welded to the front vertical bars of the scaffolding frames. The joining devices are detachably attached to the rear vertical bars of the scaffolding frames. Each joining device has a mounting device and a joining device for the detachable attachment of the joining device to the associated vertical scaffolding bar of the respective scaffolding frame. Each mounting device has a sliding wedge used to secure the joining areas of the guardrails. For this purpose, the two opposite end sections of the respective guardrail rail each have a flat, downward-facing projection that can be inserted from above into the associated clamping device. The geometry of the clamping device is selected so that a flat projection of the respective guardrail can be inserted into the clamping device from two opposite sides. Similar clamping devices have been known for many decades as mass-produced components called wedge boxes, inner boxes, or guardrail boxes for the so-called Blitz scaffolding systems of the plaintiff and its legal predecessors. These clamping devices are made of sheet iron or flat iron and consist of a U-shaped cross-section profile formed by two side-wall sections positioned horizontally apart, with clamping ends that are bent and welded to a steel scaffolding tube. The two side-wall sections extend out of the scaffolding tube essentially parallel to each other in the same direction. At their outer ends, the side wall portions merge into a transverse band, which is molded inside the wedge housing to also have a U-shaped profile, thus forming a guide channel for the wedge, which can be moved relative to it. An arrangement consisting of such a wedge housing and a scaffold tube is known, for example, from DE 27 57 189 A or the parallel document GB 2011 008 A. In the aforementioned DE 101 12369 A1, a base plate is welded or attached to such a wedge housing, which is also referred to there as a housing device, and which can be fixed or is detachably fixed to a vertical scaffold tube. A hammer-head-shaped projection unit is molded into the base plate, projecting outwards. The base plate and projection unit are cast as a single piece and form a connecting device for easy and detachable attachment to the scaffolding upright. For this purpose, the scaffolding upright has at least one elongated hole, the longitudinal axis of which extends parallel to the longitudinal axis of the scaffolding upright. The hammer-head-shaped projection unit of the clamping device can be inserted through the elongated hole in the scaffolding upright, and then the wedge box can be fixed to the scaffolding upright by rotating it 90 degrees and securing it to the upright so that it can be detached.

[0018] The respective guardrail bar has flat projections at both ends, each of which has a fixing hook for the detachable attachment of the guardrail bar to a scaffold tube, in particular to a scaffold upright. Guardrails of this type have also been known for many decades as mass-produced parts, for example, from the intellectual property rights DE 79 16 788 U and DE 101 12 369 A1 mentioned above.

[0020] If a second story is to be erected from a first story of scaffolding, wedge box arrangements on scaffold uprights of this type have the disadvantage that a guardrail formed from such a scaffold bar for an immediately above story can only be mounted into the wedge box from this immediately above story, so that this immediately above story is not secured by a guardrail against falls until the guardrail has been mounted from this immediately above story. If a guardrail of this type with a flat projection or hook of its projections or hooks provided at both ends is inserted into a wedge box from above as intended and is not supported in any other way, due to gravity the guardrail will become stuck between the two side walls of the wedge box at an angle of approximately 10 degrees to the horizontal.

[0022] Document DE 10010229 describes a fastening device for attaching at least one guardrail tube to a tubular support of a scaffold. Document DE 195 04 038 A describes a scaffold provided with tubular supports and single and/or double guardrails, in particular rear guardrails, and with U-shaped boxes attached to the tubular supports.

[0024] Despite all the associated advantages, the above constructions are comparatively complex and expensive to manufacture and design and exhibit comparatively low stability.

[0026] Summary of the invention

[0028] The invention is based on the objective of providing an arrangement of scaffolding components for a scaffold of the type mentioned at the beginning, wherein the corresponding guardrail element can be mounted or assembled from a lower level of the scaffold, can be mounted or assembled as a main guardrail on the immediately higher level of the scaffold, wherein the guardrail element support can be manufactured more easily and cost-effectively and with greater stability, and can be or is more easily and cost-effectively fixed to the corresponding scaffold upright, such that the guardrail element can be mounted or assembled on the immediately higher level of the scaffold, so that the guardrail element support has greater stability.

[0029] This objective is achieved according to the invention by means of the features of claim 1. Accordingly, according to the first solution idea, the invention relates to an arrangement of scaffolding components for a scaffold comprising scaffold uprights, scaffold stringers, preferably scaffold platforms, and guardrail elements for securing working or parking surfaces, preferably at least one scaffold platform of the scaffold platforms, having a first scaffold upright extending along a first standard longitudinal axis of the scaffold and a first guardrail element support attached thereto, configured to cooperate with guardrail elements of the guardrail elements, wherein a first guardrail element for securing the working or parking surfaces is provided, detachably attached to the first guardrail element support and having a first guardrail strut in the form of a bar, preferably tubular, in particular extending in a straight line and, at the longitudinal ends of the struts of guardrails that are oriented in opposite directions to each other, preferably in opposite directions, for detachably fixing the first guardrail element by means of the first guardrail element support to the first scaffold upright and to a second horizontally spaced scaffold upright, wherein the first guardrail element has a first coupling element of the coupling elements in the form of a first guardrail element fixing hook at a first longitudinal end of the guardrail strut of its two longitudinal ends of the guardrail strut that are directed in opposite directions to each other, having a curvature about a curvature axis perpendicular to a longitudinal axis of the guardrail strut of the first guardrail element and being provided on an inner radial side of the first guardrail element fixing hook with a notch that is delimited by a portion of the guardrail element support wall, preferably extending along the longitudinal axis of the guardrail strut or parallel to the longitudinal axis of the strut of railing, and by a hook wall portion on the radially inner side of the first fixing hook of the railing element extending transversely, preferably perpendicular, to the longitudinal axis of the railing strut of the first railing strut away from the railing element support wall portion, and wherein the notch is a certain distance from a point on a radially outer side of the first fixing hook of the railing element, wherein the distance increases gradually, in particular continuously, from a first point on the radially outer side of the first fixing hook of the railing element to a second point on the radially outer side of the first fixing hook of the railing element, and wherein the second point is farther from a center of the first railing element than the first point, and wherein the support of the first railing element comprises a first retaining wall portion for securing the fixing hook of the first railing element, preferably substantially plate-shaped or made in the form of a plate and/or a single piece, in particular formed from a solid material, to secure the first guardrail element against lateral extraction of the first guardrail element from the first guardrail element support in a direction opposite to the first scaffold upright, a first cross-connecting element to support the first guardrail element and a second cross-connecting element to support a second guardrail element to secure the working or parking platforms, and wherein the first cross-connecting element extends in a first transverse direction away from the first scaffold upright to a first end of the cross-connecting element, which is firmly, preferably rigidly, attached to the first retaining wall portion, and wherein the second cross-connecting element extends in a second transverse direction away from the scaffold upright to a second end of the cross-connecting element which is fixedly, preferably rigidly, attached to the first retaining wall portion, and wherein the first cross-connecting element and the second cross-connecting element are attached to the first scaffold upright arranged at a first horizontal distance from each other, and wherein the first wall portion of containment, the first transverse joining element and the second transverse joining element define a first fixing hook receiving space for receiving the first fixing hook of the first guardrail element, and wherein the first guardrail element resting on the first transverse joining element, preferably with the aid of a second scaffold upright, extends from a first intermediate guardrail mounting position, wherein the first guardrail element extends with a second longitudinal end of its two longitudinal ends of guardrail upright obliquely towards the first scaffold upright and away from it downwards at a first angle, which is at least 20 degrees or at least 25 degrees or at least 30 degrees with respect to a horizontal line, preferably an imaginary line, namely and preferably with respect to the horizontal, and wherein the first fixing hook of the guardrail element is located, preferably at least partially, in the receiving space of the first fixing hook of the first guardrail element support, may be rotated in relation to the first railing element support or in relation to the first railing upright as a main rail in a horizontal position, especially horizontal, wherein the first railing strut of the first railing element extends parallel to the horizontal line, i.e., or preferably to the horizontal, and wherein the first cross-jointing element and the second cross-jointing element are each joined directly, in particular without or through a mounting plate, to the first scaffold upright by welding, such that the receiving space of the first fixing hook is also delimited by the first scaffold upright

[0030] and/or such that the first railing element support is manufactured as a single piece and/or is formed from a single piece, and such that the support of the first railing element comprises a third transverse connecting element to secure the first railing element against upward lifting, wherein the third transverse connecting element is fixed to the first scaffold upright above the receiving space of the first fixing hook, preferably rigidly, and extends away from the first scaffold upright in a third transverse direction to a third end of the transverse connecting element, and wherein the third transverse connecting element and the first transverse connecting element delimit a second fixing hook receiving space to receive the fixing hook of the first railing element in which the first fixing hook of the railing element of the first railing element is housed, and wherein the first retaining wall portion is also firmly, preferably rigidly, connected to the third end of the transverse connecting element.

[0032] It may be provided that the first railing element support is configured to cooperate with a second railing element, and that the first railing element resting on the first cross-jointing element extends over a first side of the first railing element support, and that the second railing element extends over a second side of the first railing element support and rests on the second cross-jointing element, wherein the second side of the first railing element support and the first side of the railing element support extend away from each other, preferably in opposite directions.

[0034] The second railing element may be provided to have a second railing strut in the form of a bar, preferably tubular, in particular extending in a straight line, having longitudinal railing strut ends that are oriented in opposite directions from each other, preferably in opposite directions, wherein a fixing hook of the second railing element is arranged on a second longitudinal railing strut end of its two longitudinal railing strut ends.

[0036] It may be provided that the fixing hook of the second railing element of the second railing element is also housed, preferably at least partially, in the first receiving space of the fixing hook of the first railing element support.

[0038] In addition, it may be provided that the second fixing hook of the second railing element is designed in the same way as the first fixing hook of the first railing element.

[0040] Furthermore, it may be provided that the first railing element is designed symmetrically with respect to a first plane of symmetry, in particular an imaginary one, which is realized perpendicular to the first longitudinal axis of the railing strut and/or that the first railing element is configured symmetrically with respect to a second plane of symmetry, in particular an imaginary one, which contains the longitudinal axis of the railing strut of the first railing element. Preferably, the second plane of symmetry is realized perpendicular to the first plane of symmetry.

[0042] In addition, it may be provided that the first railing element support is made of sheet metal or a flat material.

[0044] Furthermore, it may be provided that the first cross-jointing element and the second cross-jointing element are arranged at a first height which is, preferably, essentially the same.

[0046] In addition, it may be provided that the first cross-jointing element and the second cross-jointing element extend at least partially or, preferably substantially, both perpendicular and/or parallel to the first longitudinal axis of the first scaffold upright and also almost or approximately parallel to or parallel to the axis of curvature.

[0048] In addition, it may be provided that the first cross-joint element has a first cross-joint element height and a first vertical slot to receive the first railing element fixing hook of the first railing element, such that the first fixing hook of the first railing element protrudes through the first vertical slot into the receiving space of the first fixing hook and/or that the second cross-joint element has a second cross-joint element height and a second vertical slot to receive a fixing hook or the fixing hook of the second railing element or the second railing element, such that the fixing hook of the second railing element can protrude or does protrude through the second vertical slot into the receiving space of the first fixing hook.

[0049] It may be provided that the first vertical slot is limited on all sides by first wall parts of the first cross-jointing element and/or is elongated or designed as an elongated hole and/or that the second vertical slot is limited on all sides by second wall parts of the second cross-jointing element and/or is elongated or designed as an elongated hole.

[0051] In addition, it may be provided that the first vertical slot and/or the second vertical slot extend or extend respectively along or parallel to the first longitudinal axis of the first scaffold upright.

[0053] It may be provided that the third transverse joining element is welded directly to the first scaffold upright, such that the receiving space for the second fixing hook is also delimited by the first scaffold upright and/or by the first part of the retaining wall.

[0055] In addition, it may be provided that the third transverse joining element extends at least partially or, preferably substantially, both perpendicular and/or parallel to the first longitudinal axis of the first scaffold upright and also almost or approximately parallel to or parallel to the axis of curvature.

[0057] In addition, it may be provided that the second fixing hook of the second railing element of the second railing element is housed, at least partially, in the receiving space of the second fixing hook of the first railing element support.

[0059] In addition, it may be provided that between the first cross-jointing element and the third cross-jointing element, a third vertical groove is formed through which the first railing element fixing hook of the first railing element protrudes, and that between the second cross-jointing element and the third cross-jointing element, a fourth vertical groove is formed through which a second railing element fixing hook of a second railing element may or does protrude or through which the second railing element fixing hook of the second railing element protrudes.

[0061] The third vertical slot and the fourth vertical slot may be provided to extend at an angle to the first longitudinal axis of the scaffold upright or along the first longitudinal axis of the scaffold upright or parallel to the first longitudinal axis of the upright of the first scaffold upright.

[0063] In addition, it may be provided that the third cross-joint, viewed in a direction parallel to the longitudinal axis of the scaffold upright, has a width that is at least 30% or at least 40% or at least 50% of the first horizontal distance that the first cross-joint and the second cross-joint have between them.

[0065] Furthermore, it may be provided that the third transverse joining element prevents the first railing element with its first railing element fixing hook received in the first fixing hook receiving space, in particular in a horizontal position or in the horizontal position, in particular horizontal, of use of the first railing element, from being lifted out of the first fixing hook receiving space.

[0067] Furthermore, it may be provided that the third transverse joining element prevents a second handrail element, or the second handrail element, whose second handrail element fixing hook is received in the receiving space of the first fixing hook, preferably in a horizontal position or in the horizontal, particularly horizontal, position of use of the first handrail element, from being lifted out of the first receiving space of the fixing hook.

[0069] Furthermore, it may be provided that the support of the first railing element having the third cross-jointing element is designed in such a way that the first railing element supported on the first cross-jointing element, in particular with the first wall portion of the railing element support of the first fixing hook of the first railing element, can be moved from a second intermediate railing mounting position, in which the first railing strut forms a second angle of at least 35 degrees or at least 70 degrees with a horizontal line, in particular the horizontal, without jamming or locking, around a pivot or horizontal pivot axis to the horizontal use position, in particular the horizontal, and vice versa.

[0071] The first horizontal distance between the first cross-joint and the second cross-joint may be provided or selected such that, when the first guardrail fixing hook of the first guardrail element is received in the first fixing hook receiving space, and when the supporting wall portion of the guardrail element that defines the notch of the first guardrail fixing hook on the radial inner portion of the first guardrail fixing hook rests on or above the first cross-joint, the first guardrail element, especially when released, may rotate downwards by gravity with respect to the first scaffold upright or rotate downwards without being impeded or restrained by the first guardrail support. This makes it unnecessary to bring the guardrail into a clamping position, or it is possible for an erector to hold and thread the first main guardrail element with one hand and a second main scaffold upright with the other. For this purpose, the second main scaffold upright can be placed on the ground or on a scaffold platform during threading.

[0073] Furthermore, the first guardrail support may be provided to comprise a fourth cross-connecting element to secure the first guardrail element against lifting it upwards out of the first fixing hook receiving space of the first guardrail support, wherein the fourth cross-connecting element and the second cross-connecting element define a third fixing hook receiving space for receiving a second guardrail element fixing hook of a second guardrail element or for receiving the second guardrail element fixing hook of the second guardrail element, wherein the fourth cross-connecting element is preferably rigidly attached to the first scaffold upright above the first fixing hook receiving space and extends away from the first scaffold upright in a fourth transverse direction to a fourth end of the cross-connecting element, and wherein the first retaining wall portion is also preferably rigidly attached to the fourth end of the cross-connecting element, and wherein the second cross-connecting element and the fourth The transverse joining element is fixed to the first scaffold upright arranged at a second horizontal distance between them.

[0074] It may be provided that the fourth cross-joint element is also welded directly to the first scaffold upright, so that the third receiving space for the fixing hook is also delimited by the first scaffold upright and/or the first part of the retaining wall.

[0076] In addition, it may be provided that the fourth transverse joining element extends at least partially or, preferably substantially, both perpendicular and/or parallel to the first longitudinal axis of the first scaffold upright and parallel to the axis of curvature.

[0078] In addition, it may be provided that the third cross-joint element and the fourth cross-joint element are arranged, preferably essentially, at the same second height.

[0080] In addition, it may be provided that the fixing hook of the second railing element of the second railing element is also housed at least partially in the second or third receiving space of the fixing hook of the first railing element support.

[0082] In addition, it may be provided that a fifth vertical groove is formed between the first cross-jointing element and the third cross-jointing element, through which the first railing element fixing hook of the first railing element protrudes, and that a sixth vertical groove is formed between the second cross-jointing element and the fourth cross-jointing element, through which a second railing element fixing hook of a second railing element may or does protrude or through which the second railing element fixing hook of the second railing element protrudes.

[0083] The fifth vertical slot and the sixth vertical slot may be provided to extend along or parallel to the longitudinal axis of the scaffold upright of the first scaffold upright.

[0085] Furthermore, it may be provided that the fourth transverse joining element prevents a second handrail element, or the second handrail element, whose second handrail element fixing hook is housed in the receiving space of the first fixing hook, preferably in a horizontal position, or in particular horizontal, of use of the first handrail element, from being lifted upwards out of the receiving space of the first fixing hook.

[0087] Furthermore, it may be provided that the first retaining wall part extends, preferably along or parallel to the first longitudinal axis of the scaffold upright, in a longitudinal extension direction, has a front side extending away from the first scaffold upright as well as a first longitudinal side and a second longitudinal side, and that the first retaining wall part is joined on the first longitudinal side to both the first cross-joint and the third cross-joint and is joined on the second longitudinal side to both the second cross-joint and the fourth cross-joint, and that each cross-joint end of the cross-joints has a first bend or a first curvature, through which the respective cross-joint end continues into the first retaining wall part, preferably allocated to each, such that the fifth vertical groove and the sixth vertical groove each extend, preferably continuously, to the front side of the first retaining wall piece, or the first retaining wall piece It has on its first longitudinal side a second curve, preferably of solid material, which continues into the first transverse joining element and the second transverse joining element, and on its second longitudinal side, it continues into the third transverse joining element and the fourth transverse joining element through a third curve, preferably of solid material, in the third transverse joining element and the fourth transverse joining element.

[0089] Furthermore, it may be provided that the first horizontal distance between the first cross-jointing element and the second cross-jointing element of the support of the first railing element is made or selected in such a way that when the first railing element's fixing hook is housed in the first fixing hook receiving space and the first railing element is not supported in a different manner, the portion of the railing element's support wall that delimits the notch of the first railing element's fixing hook on the radially inside side of the first railing element's fixing hook is borne (downward) against or on the first cross-jointing element, and that the radially outside side of the first railing element's fixing hook is borne (upward) against the second cross-jointing element in such a way that the first railing element is supported exclusively on the support of the first railing element. In this way, an advantageous starting position can be achieved for the assembly of a forward guardrail, which allows an assembler, without having to grasp the first guardrail element by hand, to grasp with both hands a second scaffold upright, to which a second guardrail element support corresponding to the first guardrail element support is attached, and to join this second guardrail element support of the second scaffold upright with another guardrail element fixing hook of the first guardrail element, which is provided at the longitudinal end of the second guardrail element support of the first guardrail element, and specifically in such a way that this other guardrail element fixing hook of the first guardrail element is or is inserted into the receiving space of the fixing hook of the second guardrail element support corresponding to the first receiving space of the fixing hook. Next, the installer can rotate the first guardrail element upwards to the horizontal mounting position by means of the second scaffold upright to ensure that the first guardrail element can be mounted or is mounted as the main guardrail before access to this next upper level.

[0091] It may be provided that the first horizontal distance between the first cross-jointing element and the second cross-jointing element is formed or selected in such a way that when the first railing element is supported exclusively by the first railing element support, the first railing strut forms a third angle with a horizontal line, preferably with the horizontal, that is greater than 20 degrees or greater than 25 degrees or equal to or greater than 30 degrees.

[0093] Furthermore, it may be provided that the first guardrail element, when in the horizontal use position, in particular in the horizontal, preferably forward, position, with its first guardrail element fixing hook housed, preferably at least partially, in the first fixing hook receiving space in the detachably mounted, preferably later, guardrail element support, cannot be dismantled with the first scaffold upright fixed or stationary without rotating the first guardrail element, with respect to the first scaffold upright, about one or more horizontal pivot axes, downwards to an inclined dismantling position.

[0095] In addition, it may be provided that each of the cross-jointing elements is attached to the first scaffold upright by means of a fixing end of the cross-jointing element that is bent or angled inwards towards the first guardrail element support or towards the first scaffold upright.

[0097] In addition, it may be provided that the cross-jointing elements are each fixed to the first scaffold upright with a first cross-jointing element fixing end and, with the exception of transition regions directly adjacent to the first retaining wall part, extend in a straight line to their respective cross-jointing element fixing end.

[0099] Furthermore, it may be provided that the first retaining wall portion, preferably viewed in a cross section perpendicular to a first vertical longitudinal axis of the first scaffolding upright extending in the direction of the first vertical longitudinal axis of the scaffolding, is V-shaped and comprises a first wall portion and a second wall portion, each of which extends into the first railing element support.

[0101] It may be provided that the first wall part and the second wall part are arranged at a fourth angle to each other, which is greater than 90 degrees and less than 170 degrees or less than 150 degrees.

[0103] In addition, it may be provided that between the first wall part and the second wall part there is a longitudinal edge that extends parallel to the longitudinal axis of the first scaffold upright.

[0105] Furthermore, the arrangement may be provided for to comprise a second scaffold upright extending along a second longitudinal axis of the scaffold upright, to which a second guardrail element support is preferably rigidly attached, having the same shape as the first guardrail element support of the first scaffold upright, wherein the first guardrail element has, at one or the second longitudinal end of the guardrail strut, a third guardrail element fixing hook or the other guardrail element fixing hook, respectively, having the same shape as the first guardrail element fixing hook, wherein the third guardrail element fixing hook, preferably at least partially, has, preferably at least partially, on one or the other guardrail element fixing hook, a third guardrail element fixing hook or the other fixing hook of the railing element, respectively, at the second longitudinal end of the railing strut of its two longitudinal ends of the railing strut.

[0107] In addition, it may be provided that the first railing element fixing hook of the first railing element and/or a second railing element fixing hook of a second railing element or the second railing element fixing hook of the second railing element are plate-shaped and/or configured as a pressed tube to form a flat fixing hook end.

[0109] In addition, it may be foreseen that the railing element support and the scaffolding upright(s) be made of iron or steel, or that the railing element support and the scaffolding upright(s) be made of aluminum, in particular extruded aluminum.

[0111] In addition, it may be provided that the railing element support or each support is designed symmetrically with respect to a plane of symmetry containing the longitudinal axis of the associated scaffold upright.

[0113] Furthermore, it may be provided that the first fixing hook of the guardrail element has a free insertion end and that the fixing hook wall thickness is preferably constant and/or maximum from the free insertion end continuously to a region of the fixing hook that is housed in the first fixing hook receptacle of the first guardrail element support, and that the first guardrail element support is designed to coincide with the first scaffold upright such that the first retaining wall portion has a first minimum distance from an outer surface of the first scaffold upright facing it, viewed in a cross-sectional plane perpendicular to the longitudinal axis of the first scaffold upright, that is slightly less than twice the fixing hook wall thickness of the first guardrail element fixing hook, or that each guardrail element fixing hook has a free insertion end and has a preferably constant and/or maximum fixing hook wall thickness continuously from the free insertion end to a region of the hook. fixing that is received in the respective first receiving space of the fixing hook of the respective handrail element support, and wherein each handrail element support is designed to coincide with the respective associated scaffold upright such that the respective retaining wall portion has a first minimum distance from an outer surface of the respective associated scaffold upright located opposite the respective retaining wall portion, in each case viewed in a cross-section plane perpendicular to the longitudinal axis of the respective associated scaffold upright, a distance that is slightly less than twice the wall thickness of the fixing hook of the first fixing hook of the handrail element.

[0115] In addition, it may be provided that the first retaining wall portion of the first guardrail support or of each guardrail support carries a fixing wedge for releasably securing the first guardrail fixing hook of the first guardrail, or the first guardrail fixing hook and the second guardrail fixing hook of the second guardrail, against relative movements with respect to the associated guardrail support or with respect to the associated scaffold upright.

[0117] The fixing wedge may be provided to be mounted on the first guardrail element support so that it can rotate about a wedge pivot axis that extends in particular perpendicular to the first longitudinal axis of the scaffold upright of the first scaffold upright.

[0119] In addition, it may be provided that the first retaining wall part is made of a U-shaped profile forming a guide channel for a wedge wall part of the fixing wedge, in which the wedge wall part of the fixing wedge can be housed or is at least partially housed.

[0121] In addition, it may be provided that the first part of the retaining wall is formed from a single piece, preferably of solid material, or is manufactured from a single piece, preferably of solid material.

[0123] The invention also relates to scaffolding, in particular modular scaffolding, preferably frame scaffolding, comprising scaffold uprights, scaffold stringers, preferably scaffold platforms, and the arrangement according to the invention.

[0125] Advantageous embodiments of the invention are described in more detail below with reference to the figures.

[0127] Brief description of the figures

[0129] Shown:

[0131] Fig. 1 an example of a railing element known in the state of the art;

[0133] Fig. 2 a three-dimensional view of a scaffold upright, to which a first handrail element support is fixed according to a first embodiment in the region of the upper end of the scaffold upright and to which, as an example, a second handrail element support, also known as a wedge box, according to the state of the art, is optionally fixed below, as an example, as well as below, also as an example, a perforated disc, also known as a rosette, fixed to the scaffold upright;

[0135] Fig. 3.1 the support of the first railing element fixed to the scaffold upright, as shown in figure 2 in an enlarged three-dimensional representation viewed from the top left;

[0136] Fig. 3.2 the support of the first railing element fixed to the scaffold upright, as shown in figure 3.1 in a view from the top right;

[0137] Fig. 3.3 the support of the first railing element fixed to the scaffold upright, as shown in figures 3.1 and 3.2 in a two-dimensional representation in a plan view;

[0138] Fig. 3.4 the support of the first railing element fixed to the scaffold upright, as shown in figures 3.1 and 3.2 in a two-dimensional representation in a side view from the left;

[0139] Fig. 3.5 the support of the first railing element fixed to the scaffold upright, as shown in figures 3.1 and 3.2 in an enlarged two-dimensional cross-sectional representation, viewed from top to bottom along cut lines 3.5 - 3.5 of figure 3.3;

[0140] Fig. 4.1 a first support for a railing element fixed to a scaffold upright according to a second embodiment in a three-dimensional representation in a view from the top left;

[0141] Fig. 4.2 the support of the first railing element fixed to the scaffold upright, as shown in figure 4.1 in a view from the top right;

[0142] Fig. 4.3 the support of the first railing element fixed to the scaffold upright, as shown in figures 4.1 and 4.2 in a two-dimensional representation in a plan view;

[0143] Fig. 4.4 the support of the first railing element fixed to the scaffold upright, as shown in figures 4.1 and 4.2 in a two-dimensional representation in a side view from the left;

[0144] Fig. 4.5 the first support of railing element fixed to the scaffold upright, as shown in figures 4.1 and 4.2 in an enlarged two-dimensional representation of the cross section, viewed from top to bottom along section lines 4.5 - 4.5 of figure 4.3;

[0145] Fig. 5.1 a first support for a railing element fixed to a scaffold upright, according to a third embodiment in a three-dimensional representation, viewed from the top left;

[0146] Fig. 5.2 the support of the first railing element fixed to the scaffold upright, as shown in figure 5.1 in a view from the top right;

[0147] Fig. 5.3 the support of the first railing element fixed to the scaffold upright, as shown in figures 5.1 and 5.2 in a two-dimensional representation, in a plan view;

[0148] Fig. 5.4

[0149] the support of the first railing element fixed to the scaffold upright, as shown in Figures 5.1 and 5.2 in a two-dimensional representation in a side view from the left;

[0150] Fig. 5.5 the first support of railing element fixed to the scaffold upright, as shown in figures 5.1 and 5.2 in an enlarged two-dimensional cross-sectional representation, viewed from top to bottom along cut lines 5.5 - 5.5 of figure 5.3;

[0151] Fig. 6.1 a first support for a railing element fixed to a scaffold upright according to a fourth embodiment in a three-dimensional representation in a view from the top left;

[0152] Fig. 6.2 the support of the first railing element fixed to the scaffold upright, as shown in figure 6.1 in a view from the top right;

[0153] Fig. 6.3 the support of the railing element fixed to the scaffold upright, as shown in figures 6.1 and 6.2 in a two-dimensional representation in a plan view from the front;

[0154] Fig. 6.4 the support of the first railing element fixed to the scaffold upright, as shown in figures 6.1 and 6.2 in a two-dimensional representation in a side view from the left;

[0155] Fig. 6.5 the first support of railing element fixed to the scaffold upright, as shown in figures 6.1 and 6.2 in an enlarged two-dimensional cross-sectional representation, viewed from top to bottom along cut lines 6.5 - 6.5 of figure 6.3;

[0156] Fig. 6.6 the first railing element support fixed to the scaffold upright, as shown in figure 6.5 in a cross-sectional view from bottom to top along cut lines 6.6 - 6.6 of figure 6.3;

[0157] Fig. 7.1 a first railing element support fixed to a scaffold upright according to a fifth embodiment, which is not the subject of the invention, in a three-dimensional representation viewed from the top left;

[0159] Fig. 7.2 the first railing element support fixed to the scaffold upright, as shown in figure 7.1, which is not the subject of the invention, in a view from the top right;

[0161] Fig. 7.3 the first support of a handrail element fixed to the scaffold upright, as shown in Figures 7.1 and 7.2, which is not the subject of the invention, in a two-dimensional representation in a plan view from the front;

[0163] Fig. 7.4 the first support of a handrail element fixed to the scaffold upright, as shown in Figures 7.1 and 7.2, which is not the subject of the invention, in a two-dimensional representation in a side view from the left;

[0165] Fig. 7.5 the first support of a handrail element fixed to the scaffold upright, as shown in Figures 7.1 and 7.2, which is not the subject of the invention, in a two-dimensional cross-sectional representation viewed from top to bottom along the cut lines 7.5 - 7.5 of Figure 7.3;

[0167] Fig. 7.6 the first handrail element support fixed to the scaffold upright, as shown in figure 7.5, which is not the subject of the invention, in a cross-sectional view from bottom to top along section lines 7.6 - 7.6 of figure 7.3;

[0169] Figs. 8.1 to 8.9 an arrangement of scaffolding components, comprising one or two scaffolding uprights with one or each of the guardrail element supports according to the embodiments shown in Figures 2 and 3.1 to 3.5 as well as in Figures 4.1 to 4.5 as well as in Figures 5.1 to 5.5, i.e., according to the first, second and third embodiments, and with the guardrail element according to Figure 1, to illustrate an assembly sequence in the case of pre-assembly of the guardrail element, wherein the

[0171] Fig. 8.1 shows a first mounting position of the railing element when hooked onto the railing element support, wherein a fixing hook of the railing element is partially inserted with its free insertion end first into a receiving space of the fixing hook of the second railing element support,

[0173] Fig. 8.2 shows a second mounting position of the railing element, in which the first fixing hook of the railing element is transferred with its insertion end free through the receiving space of the fixing hook of the second railing element support to a receiving space of the first fixing hook of the railing element support,

[0175] Fig. 8.3 shows a third mounting position of the railing element, in which the railing element is raised with its other end of the railing element (not shown) compared to the second mounting position shown in Fig. 8.2, such that the fixing hook of the railing element is transferred towards the first receiving space of the fixing hook of the railing element support,

[0176] Fig. 8.4 shows a fourth mounting position of the guardrail element, wherein the first fixing hook of the guardrail element is inserted further into the first receiving space of the fixing hook of the guardrail element support, until a wall-supporting portion of the fixing hook of the guardrail element rests on the first cross-jointing element of this guardrail element support, shown below right in a cross-section, and until the outer radial side of the first fixing hook of the guardrail element rests upwards against a second cross-jointing element of the guardrail element support, such that the guardrail element is held at a certain angle obliquely to the scaffold upright in a clamping position in which it is not otherwise supported,

[0178] Fig. 8.5 The arrangement in the fourth mounting position according to figure 8.4 in a plan view of the railing element support from the front, with hidden edges shown as dashed lines,

[0179] Fig. 8.6 A view of the arrangement according to figures 8.4 and 8.5, wherein another railing element fixing hook, shown here on the right, is now joined with a second scaffold upright in such a way that it is inserted into the receiving space of the second fixing hook of a second railing element support of the second scaffold upright,

[0181] Fig. 8.7 A view of the arrangement according to Figure 8.6, wherein the second scaffold upright together with the guardrail element is now moved upwards to a vertical installation or use position, wherein the second scaffold upright extends parallel to the first scaffold upright, and wherein the guardrail element is in a horizontal use position, forming a pre-assembled guardrail.

[0183] Fig. 8.8 The arrangement of the first scaffold upright shown in figure 8.7 on the left with the guardrail element attached to its first guardrail element support in the horizontal position of use, in a plan view of the first guardrail element support from the front, with hidden edges shown as dashed lines,

[0185] Fig. 8.9 the arrangement according to Figure 8.8 in a three-dimensional representation from top right to bottom left;

[0187] Fig. 9.1 a plan view of an arrangement comprising a scaffold upright with a guardrail element support according to the first embodiment, wherein two guardrail elements are each mounted in a horizontal position of use, wherein each is secured to the guardrail element support with a guardrail element fixing hook to prevent lifting, wherein hidden edges are shown as dashed lines;

[0189] Fig. 9.2 the arrangement shown in Figure 9.1 in a three-dimensional representation from above;

[0191] Figs. 10.1 to 10.7 an arrangement of scaffolding components, comprising one or two scaffolding uprights with one or each of the guardrail element supports according to the fourth embodiment shown in Figures 6.1 to 6.6 and with the guardrail element according to Figure 1, for representing an assembly sequence in a pre-assembly of the guardrail element, wherein the

[0193] Fig. 10.1 shows a first mounting position of the railing element when hooked onto the railing element support according to the fourth embodiment shown in Figures 6.1 to 6.5, wherein a railing element fixing hook is partially inserted with its free insertion end first into a second receiving space of the railing element fixing hook,

[0194] Fig. 10.2 shows a second mounting position of the railing element, in which the first fixing hook of the railing element is transferred with its free insertion end through the receiving space of the fixing hook of the second railing element support to a receiving space of the first fixing hook of the railing element support,

[0196] Fig. 10.3 shows a third mounting position of the railing element, in which the railing element is raised with its other end of the railing element (not shown) compared to the second mounting position shown in Fig. 10.2, such that the fixing hook of the railing element is carried further into the receiving space of the first fixing hook of the railing element support,

[0197] Fig. 10.4 shows a fourth mounting position of the railing element, in which the first fixing hook of the railing element is inserted further into the first receiving space of the fixing hook of the railing element support, specifically until a wall portion of the railing element fixing hook rests on the first transverse joining element of this railing element support, shown in the lower right in a cross section, without touching the railing element support at any other point,

[0199] Fig. 10.5 a view of the arrangement according to figure 10.4, wherein another railing element fixing hook of the railing element, shown here on the right, is carried together with a second scaffold upright in such a way that it is inserted into the second fixing hook receiving space of a second railing element support of the second scaffold upright according to the fourth embodiment, wherein the second scaffold upright rests at its lower end on a scaffold platform that is fixed directly or indirectly to the first and second scaffold uprights,

[0201] Fig. 10.6 A view of the arrangement according to figure 10.5, wherein the second scaffold upright together with the guardrail element is now moved upwards to a vertical installation position or a position of use, wherein the second scaffold upright extends parallel to the first scaffold upright and wherein the guardrail element is in a horizontal position of use, wherein it forms a mounted main guardrail,

[0203] Fig. 10.7 the arrangement of the first scaffold upright shown in figure 10.6 on the left with the guardrail element fixed to its first guardrail element support in the horizontal position of use according to the fourth embodiment, in a three-dimensional representation with a view from top right to bottom left,

[0205] Detailed description of the figures

[0206] The invention relates generally to an arrangement 15.1, 15.2 of scaffolding components for a scaffold, comprising scaffolding uprights 17; 17.1, 17.2, scaffolding stringers, preferably scaffolding platforms, and guardrail elements 19; 19.1, 19.2 for securing working or parking surfaces, in particular scaffolding platforms. The arrangement 15.1, 15.2 comprises a first scaffolding upright 17; 17.1 extending along a first longitudinal axis of scaffolding upright 16.1 and a first guardrail element support 18; 18.1, 18.2, 18.3, 18.4, 18.5 fixed thereto. The guardrail element support 18; 18.1, 18.2, 18.3, 18.4, 18.5 is configured to cooperate with the guardrail elements 19; 19.1, 19.2 of the guardrail elements 19; 19.1, 19.2. The arrangement also comprises a first guardrail element 19; 19.1 for securing work or parking surfaces, which is detachably attached to the first guardrail element support 18; 18.1, 18.2, 18.3, 18.4, 18.5. The first guardrail element 19; 19.1 comprises a first guardrail strut 21; 21.1 in the form of a bar, preferably tubular, extending in a straight line along a longitudinal axis of the guardrail strut 20. The guardrail strut 21; 21.1 has two longitudinal ends of guardrail strut 22.1, 22.2 extending away from each other in opposite directions. At each longitudinal end of guardrail brace 22.1, 22.2, a coupling element 23; 23.1, 23.2 is provided for detachably fixing the first guardrail element 19; 19.1 by means of the first guardrail element support 18; 18.1, 18.2, 18.3, 18.4, 18.5 to the first scaffold upright 17; 17.1 and to a second horizontally spaced scaffold upright 17; 17.2. The first guardrail element 19; 19.1 has a first longitudinal end of coupling element 23.1 of the coupling elements 23; 23.1, 23.2 in the form of a first railing element fixing hook 23.1 at a first longitudinal end of railing strut 22.1 of its two longitudinal ends of railing strut 22.1, 22.2 oriented in opposite directions to each other. The first railing element fixing hook 23.1 has a curvature 24 around a curvature axis 25 perpendicular to the longitudinal axis 20 of the first railing strut 21.1 of the first railing element 19.1. The first fixing hook of the railing element 23.1 is provided with a notch 27 on a radial inner side 26. The notch 27 is bounded by a portion of the railing element support wall 28 of the first fixing hook of the railing element 23.1 extending along the longitudinal axis of the railing strut 20 or parallel to the longitudinal axis of the railing strut 20, and by a portion of the hook wall 29 on the radially inner side 26 of the first fixing hook of the railing element 23.1 extending transversely, preferably perpendicularly, to the longitudinal axis 20 of the first railing strut 21.1 away from the portion of the railing element support wall 28. The notch 27 has a distance to a point on a radially outer side 30 of the first fixing hook of the first railing element 23.1, where the distance increases gradually, in particular continuously, from a first point 32.1 on the radially outside side 30 of the fixing hook of the first railing element 23.1 to a second point 32.2 on the radially outside side 30 of the first fixing hook of railing element 23.1, and wherein the second point 32.2 is farther from a center 33 of the first railing element 19.1 than the first point 32.1. The first railing element support 18; 18.1, 18.2, 18.3, 18.4, 18.5 comprises a first retaining wall portion 34.1, 34.1, 34.3, 34.4, 34.5 essentially plate-shaped or made in the form of a plate, in one piece and made of a solid material, to secure the first guardrail element 19.1 against lateral withdrawal of the first guardrail element 19.1 from the first guardrail element support 18; 18.1, 18.2, 18.3, 18.4, 18.5 in the opposite direction to the first scaffold upright 17.1. Furthermore, the support for the first guardrail element 18; 18.1, 18.2, 18.3, 18.4, 18.5 comprises a first transverse joining element 35.1.1, 35.2.1, 35.3.1, 35.4.1, 35.5.1 to support the first railing element 19.1 and a second transverse joining element 35.1.2, 35.2.2, 35.3.2, 35.4.2, 35.5.2 to support a second railing element 19.2 to secure the work or parking surfaces. The first transverse joining element 35.1.1, 35.2.1, 35.3.1, 35.4.1, 35.5.1 extends in a first transverse direction from the first scaffold upright 17.1 to a first end of the transverse joining element 36.1.1, 36.2.1, 36.3.1, 36.4.1, 36.5.1, which is firmly attached, preferably rigidly, to the first part of the retaining wall 34.1, 34.1, 34.3, 34.4, 34.5. The second transverse joining element 35.1.2, 35.2.2, 35.3.2, 35.4.2, 35.5.2 extends in a second transverse direction from the first scaffold upright 17.1 to a second end of the transverse joining element 36.1.2, 36.2.2, 36.3.2, 36.4.2, 36.5.2, which is firmly attached, preferably rigidly, to the first retaining wall part 34.1, 34.1, 34.3, 34.4, 34.5. The first transverse joining element 35.1.1, 35.2.1, 35.3.1, 35.4.1, 35.5.1 and the second transverse joining element 35.1.2, 35.2.2, 35.3.2, 35.4.2, 35.5.2 are fixed to the first scaffold upright 17.1 arranged at a first horizontal distance 31.1.1, 37.2.1, 37.3.1, 37.4 between them. The first part of the retaining wall 34.1, 34.1, 34.3, 34.4, 34.5, the first transverse joining element 35.1.1, 35.2.1, 35.3.1, 35.4.1, 35.5.1 and the second transverse joining element 35.1.2, 35.2.2, 35.3.2, 35.4.2, 35.5.2 delimit a first receiving space for the fixing hook 38.1, 38.2, 38.3, 38.4, 38.5 to receive the first fixing hook 23.1 of the railing element of the first railing element 19.1. The first guardrail element 19.1 resting on the first transverse joining element 35.1.1, 35.2.1, 35.3.1, 35.4.1, 35.5.1, preferably with the aid of a second scaffold upright 17.2, is inclined from a first intermediate guardrail mounting position 70, wherein the first guardrail element 19.1 can be inclined with a second guardrail strut longitudinal end 22.2 from its two guardrail strut longitudinal ends 22.1, 22.2 towards the first scaffold upright 17.1 or towards its first scaffold upright longitudinal axis 16.1 and downwards away from the first scaffold upright 17.1 at a first angle 39, extending at least 20 degrees or at least 25 degrees or at least 30 degrees with respect to a horizontal line, specifically with respect to the horizontal 40, and wherein the first fixing hook of the railing element 23.1 is received at least partially in the first receiving space of the fixing hook 38.1, 38.2, 38.3, 38.4, 38.5 of the first railing element support 18; 18.1, 18.2, 18.3, 18.4, 18.5, in relation to the first railing element support 18; 18.1, 18.2, 18.3, 18.4, 18.5 or in relation to the first scaffold upright 17.1 as a forward-mounted guardrail in a horizontal position of use, in particular horizontal 41, wherein the first guardrail strut 21.1 of the first guardrail element 19.1 extends parallel to the horizontal line, i.e., to the horizontal line 40.

[0208] The first or respective railing element 19; 19.1, 19.2, with the first or respective railing element fixing hook 23; 23.1, 23.2, is known from the prior art. An example of such a railing element is known from the aforementioned document DE 7916788 U. Figure 1 shows, by way of example, such a railing element 19 known in the prior art. The invention essentially relates to the railing element support 18; 18.1, 18.2, 18.3, 18.4, 18.5 of arrangement 15.1, 15.2 according to the invention, which is configured to cooperate with the associated railing element 19.1, 19.2 or with the respective associated railing element 19.1, 19.2.

[0210] In particular, Figure 2 shows as an example a scaffold upright 17, as can be used in arrangement 15.1, 15.2 according to the invention. The scaffold upright(s) 17; 17.1, 17.2 shown as an example in the figures extends in a straight line along its longitudinal axis from the scaffold upright(s) 16.1, 16.2. The scaffold upright(s) 17; 17.1, 17.2 has a scaffold tube 42 that is provided with or formed with a straight tube connector 44 at a first tube end 43.1, preferably upper, from its two tube ends 43.1, 43.2 that extend away from each other in opposite directions. An additional scaffold upright, not shown in the figures, can be inserted into the tube connector 44. For this purpose, the tube connector 44 has an outer diameter that is slightly smaller than the inner diameter of the scaffold tube 42 at the second tube end 43.2 of its two tube ends 43.1, 43.2. Scaffold uprights 17, 17.1, 17.2 of this type have also been known for many decades in the prior art. In the example of the scaffold upright 17 shown in Figure 2, a first guardrail element support 18.1 is attached to the upper end region of the scaffold tube 42, according to the first embodiment shown in particular in Figures 3.1 to 3.5. A guardrail element 19; 19.1, 19.2, or two guardrail elements 19.1, 19.2 may be detachably fixed to the guardrail element support 18; 18.1, 18.2, 18.3, 18.4, 18.5 according to the invention. Figure 1 shows, by way of example, a guardrail element 19 suitable for this purpose. In each of the embodiments shown in the figures, a guardrail element support 18; 18.1, 18.2, 18.3, 18.4, 18.5 according to the invention is fixed to the corresponding scaffold upright 17; 17.1, 17.2 in the region of the upper tube end 43.1 of the scaffold tube 42 of the first scaffold upright 17; 17.1 or of each scaffold upright 17; 17.1, 17.2. Optionally, another guardrail element support 46, in particular for a knee guardrail, may be fixed to the scaffold tube 42 on the first or on each scaffold upright 17; 17.1, 17.2 at a first distance 45 below the guardrail element support 18; 18.1, 18.2, 18.3, 18.4, 18.5 according to the invention. Preferably, the first distance 45 is about 50 cm. The additional support for the guardrail element 46 can be, for example, the guardrail box 46 shown in Figure 2. This box can be configured, for example, according to the examples of guardrail box embodiments shown and described in document DE 27 57 189 A. However, instead of the guardrail box, a rosette made as a perforated disc or another guardrail element support or other guardrail seat can also be attached to the scaffold tube of the scaffold upright in question. Optionally, a connecting element 48 for other scaffold components, such as longitudinal stringers and/or transverse stringers and/or diagonal stringers or so-called diagonals, can be attached to the first or to each scaffold upright 17; 17.1, 17.2, at a second distance 47 below the guardrail element support 18. 18.1, 18.2, 18.3, 18.4, 18.5 according to the invention on the scaffold tube of the scaffold upright. The second distance 47 is greater than the first distance 45. For example, the second distance 47 is approximately twice the first distance 45. Preferably, the second distance 47 is about 100 cm. As shown by way of example in Figure 2, the connecting element 48 can be a rosette in the form of a perforated disc. Instead of the perforated disc, another connecting element can also be attached to the scaffold tube. The first or each of the scaffold uprights has an effective scaffold upright length. This corresponds to the length of the scaffold upright tube. The effective scaffold upright length can be about 200 cm or about 100 cm, for example.

[0212] According to a first solution idea of the invention or according to an embodiment of the invention, it may be provided that the first transverse joining element 35.1.1, 35.2.1, 35.3.1, 35.4.1, 35.5.1 and the second transverse joining element 35.1.2, 35.2.2, 35.3.2, 35.4.2, 35.5.2 are joined by welding directly to the first scaffold upright 17; 17.1, such that the first receiving space of the fixing hook 38.1, 38.2, 38.3, 38.4, 38.5 is also delimited by the first scaffold upright 17; 17.1. Alternatively or additionally, it may be provided that the first handrail element support 18; 18.1, 18.2, 18.3, 18.4, 18.5 are made in one piece and/or are manufactured from a single piece. A combination of these measures is carried out in all the embodiments shown in the figures. This is in such a way that the first transverse joining element 35.1.1, 35.2.1, 35.3.1, 35.4.1, 35.5.1 and the second transverse joining element 35.1.2, 35.2.2, 35.3.2, 35.4.2, 35.5.2 are joined by welding directly to the first scaffold upright 17; 17.1, such that the first receiving space of the fixing hook 38.1, 38.2, 38.3, 38.4, 38.5 is also delimited by the first scaffold upright 17; 17.1 and that the first handrail element support 18; 18.1, 18.2, 18.3, 18.4, 18.5 is manufactured in one piece and is therefore designed in one piece.

[0213] According to a second solution idea of the invention or according to an embodiment of the invention, the first support of the railing element comprises a third transverse joining element 35.1.3, 35.2.3, 35.3.3, 35.4.3 to secure the first railing element 19.1 against its upward lifting out of the first receiving space of the fixing hook 38.1, 38.2, 38.3, 38.4 of the first support of railing element 18.1, 18.2, 18.3, 18.4. The third transverse connecting element 35.1.3, 35.2.3, 35.3.3, 35.4.3 is fixed to the first scaffold upright 17.1 above the first receiving space of the fixing hook 38.1, 38.2, 38.3, 38.4, preferably rigidly, in particular by welding. The third transverse connecting element 35.1.3, 35.2.3, 35.3.3, 35.4.3 extends away from the first scaffold upright 17.1 in a third transverse direction to a third end of the transverse connecting element 36.1.3, 36.2.3, 36.3.3, 36.4.3. The third transverse joining element 35.1.3, 35.2.3, 35.3.3, 35.4.3 and the first transverse joining element 35.1.1, 35.2.1, 35.3.1, 35.4.1 delimit a second receiving space for the fixing hook 49.1, 49.2, 49.3, 49.4 to receive a first fixing hook of railing element 23.1 of the first railing element 19.1, in which the first fixing hook of railing element 23.1 of the first railing element 19.1 is received. The first part of the retaining wall 34.1, 34.2, 34.3, 34.4 is also firmly attached, preferably rigidly, in particular integrally, to the third end of the transverse joining element 36.1.3, 36.2.3, 36.3.3, 36.4.3.

[0215] In all embodiments, the first railing element support 18.1, 18.2, 18.3, 18.4, 18.5 is configured to cooperate with a second railing element 19; 19.2. Accordingly, a second railing element 19; 19.2 can also be detachably attached to the first railing element support 18.1, 18.2, 18.3, 18.4, 18.5. In this case, the first railing element 19.1 supported on the first transverse connecting element 35.1.1, 35.2.1, 35.3.1, 35.4.1, 35.5.1 can extend over a first side of the first railing element support and the second railing element 19; 19.2 supported on the second transverse joining element 35.1.2, 35.2.2, 35.3.2, 35.4.2, 35.5.2 supported on the second transverse joining element 35.1.2, 35.2.2, 35.3.2, 35.4.2, 35.5.2 can be extended over a second side of the support of the first railing element 18.1, 18.2, 18.3, 18.4, 18.5. The first side of the first support of railing element 18.1, 18.2, 18.3, 18.4, 18.5 and the second side of the support of railing element 18.1, 18.2, 18.3, 18.4, 18.5 extend away from each other, preferably in opposite directions. In this case, the first railing element 19; 19.1 and the second railing element 19; 19.2 extend away from each other, preferably in opposite directions.

[0216] In all embodiments, the first or each of the railing element fixing hooks 23; 32.1, 23.2 has a free insertion end 50.1, 50.2 and extends continuously from the free insertion end 50.1, 50.2 into a fixing hook zone, which is received in the or the respective first fixing hook receiving space 38.1, 38.2, 38.3, 38.4, 38.5 of the corresponding railing element support 18; 18.1, 18.2, 18.3, 18.4, 18.5, and has a constant fixing hook wall thickness 51. The first or each of the railing element supports 18; 18.1, 18.2, 18.3, 18.4, 18.5 is adapted to the first scaffold upright 17; 17.1 or to the respective associated scaffold upright 17; 17.1, 17.2 in such a way that the first retaining wall part 34.1, 34.2, 34.3, 34.4, 34.5 or the corresponding retaining wall part 34.1, 34.2, 34.3, 34.4, 34.5 or the respective retaining wall part 34.1, 34.2, 34.3, 34.4, 34.5 from an outer surface 52 of the first scaffold upright 17; 17.1 or of the respective associated scaffold upright 17; 17.1, 17.2 located opposite the first part of the retaining wall 34.1, 34.2, 34.3, 34.4, 34.5.2, in a transverse plane or in each case in a transverse plane perpendicular to the longitudinal axis 16.1, 16.2 of the scaffold upright 17; 17.1, 17.2 respectively assigned or in each case in a transverse plane perpendicular to the longitudinal axis 16.1, 16.2 of the scaffold upright 17; 17.1, 17.2 respectively assigned, has a first minimum distance 53 which is slightly less than twice the wall thickness of the fixing hook 51 of the first fixing hook of the guardrail element 23; 32.1, 23.2 or of the fixing hook of the guardrail 23; 32.1, 23.2 respectively assigned.

[0218] In the embodiments only, the first railing element 19.1 or the respective railing element 19; 19.1, 19.2 is designed symmetrically with respect to a first plane of symmetry 54, which is formed perpendicular to the first or the respective longitudinal axis 20 of the railing strut. Furthermore, the first or each of the railing elements 19; 19.1, 19.2 is designed symmetrically with respect to a second plane of symmetry, which contains the first longitudinal axis of railing strut 20 or the longitudinal axis of railing strut 20 respectively associated with the first or the respective railing element 19; 19.1, 19.2. The second plane of symmetry is perpendicular to the first plane of symmetry. Each fixing hook of the railing element 23; 32.1, 23.2 forms one end of the respective railing element 19; 19.1, 19.2.

[0220] It is also possible that arrangement 15.1, 15.2 according to the invention further comprises a second railing element 19; 19.2. The second railing element 19; 19.2, if provided, has a second railing strut 21; 21.1 in the form of a bar, preferably tubular, extending in a straight line. The second railing strut 21; 21.2 has longitudinal railing strut ends 22.1, 22.2 that are oriented in opposite directions. A fastening hook for the second railing element 23.2 is arranged at a second longitudinal end of the railing strut 22.2 of the two longitudinal ends of the railing strut 22.1, 22.2 of the second railing element 19; 19.2, if provided. The fixing hook of the second railing element 23.2 of the second railing element 19; 19.2 can also be received in the first receiving space of the fixing hook 38.1, 38.2, 38.3, 38.4, 38.5 of the first railing element support 18.1, 18.2, 18.3, 18.4, 18.5, for example as shown in Figures 9.1 and 9.2. The fixing hook of the railing element of the second railing element 23.2 of the second railing element 19; 19.2 is made in the same way as the first fixing hook of the railing element 23.1 of the first railing element 19; 19.1. Preferably, the first railing element 19.1 and the second railing element 19.2 are made in the same way. Therefore, the first and second railing elements 19.1 and 19.2 can be made in the same way as railing element 19 shown in Figure 1.

[0222] In the first railing element 19.1, the first railing element fixing hook 23.1 provided at the first longitudinal end of railing strut 22.1 and the other or second railing element fixing hook 23.2 provided at the other longitudinal end of railing strut 22.2 are configured as a plate and/or are configured as a compressed tube to form a flat fixing hook end. If a second railing element 19.2 is also mounted, the second railing element fixing hook 23.2 provided at its first longitudinal end of railing strut 22.1 and another railing element fixing hook 23.1 provided at its other longitudinal end of railing strut 22.2 are plate-shaped and/or are made as a pressed tube to form a flat fixing hook end.

[0224] In all embodiment examples, the first transverse joining element 35.1.1, 35.2.1, 35.3.1, 35.4.1, 35.5.1 and the second transverse joining element 35.1.2, 35.2.2, 35.3.2, 35.4.2, 35.5.2 are each arranged essentially at the same first height 58.1.1, 58.1.2, 58.1.3, 58.1.4, 58.1.5. The first transverse joining element 35.1.1, 35.2.1, 35.3.1, 35.4.1, 35.5.1 and the second transverse joining element 35.1.2, 35.2.2, 35.3.2, 35.4.2, 35.5.2 extend at least partially, or substantially approximately or approximately perpendicular and/or approximately or approximately parallel to the first longitudinal axis 16.1 of the first upright 17; 17.1 of the scaffold. The first transverse joining element 35.1.1, 35.2.1, 35.3.1, 35.4.1, 35.5.1 and the second transverse joining element 35.1.2, 35.2.2, 35.3.2, 35.4.2, 35.5.2 can also be extended approximately or approximately parallel to the curvature axis 25.

[0226] With the exception of the fifth embodiment shown in Figures 7.1 to 7.6, which is not an object of the invention, the first railing element support 18; 18.1, or the respective railing element support 18; 18.1, 18.2, 18.3, 18.4, in all other embodiments comprises not only a first transverse joining element 35.1.1, 35.2.1, 35.3.1, 35.4.1 of the aforementioned type and a second transverse joining element 35.1.2, 35.2.2, 35.3.2, 35.4.2 of the aforementioned type, but also features at least a third transverse joining element 35.1.3, 35.2.3, 35.3.3, 35.4.3 for securing the first railing element 19; 19.1 against its elevation, extending out of the receiving space of the first fixing hook 38.1, 38.2, 38.3, 38.4 of the support of the first guardrail element 18.1, 18.2, 18.3, 18.4. The third transverse joining element 35.1.3, 35.2.3, 35.3.3, 35.4.3 is fixed to the first scaffold upright 17; 17.1 above the receiving space of the first fixing hook 38.1, 38.2, 38.3, 38.4, preferably rigidly, and extends out of the first scaffold upright 17; 17.1 in a third transverse direction to a third end of transverse joining element 36.1.3, 36.2.3, 36.3.3, 36.4.3. The third transverse joining element 35.1.3, 35.2.3, 35.3.3, 35.4.3 and the first transverse joining element 35.1.1, 35.2.1, 35.3.1, 35.4.1, 35.5.1 delimit a space for receiving the second fixing hook 49.1, 49.2, 49.3, 49.4 to receive the first fixing hook of the railing element 23.1 of the first railing element 19.1, in which the first fixing hook of the railing element 23.1 of the first railing element 19.1 is received. The first part of the retaining wall 34.1, 34.2, 34.3, 34.4 is also firmly attached, preferably rigidly, to the third end of the transverse joining element 36.1.3, 36.2.3, 36.3.3, 36.4.3. The receiving space of the second fixing hook 49.1, 49.2, 49.3, 49.4 is also delimited by the first scaffold upright 19.1 and/or by the first part of the retaining wall 34.1, 34.2, 34.3, 34.4. The third transverse joining element 35.1.3, 35.2.3, 35.3.3, 35.4.3 extends at least partially or essentially approximately or approximately perpendicular and/or approximately or approximately parallel to the first longitudinal axis of the scaffold upright 16.1 of the first scaffold upright 17; 17.1. The third transverse joining element 35.1.3, 35.2.3, 35.3.3, 35.4.3 can also extend approximately or approximately parallel to the axis of curvature 25. Between the first transverse joining element 35.1.1, 35.2.1, 35.3.1, 35.4.1, 35.5.1 and the third transverse joining element 35.1.3, 35.2.3, 35.3.3, 35.4.3 a third vertical groove 49.4 is formed, through which the first fixing hook of the first handrail element protrudes. Between the second transverse joining element 35.1.2, 35.2.2, 35.3.2, 35.4.2 and the third transverse joining element 35.1.3, 35.2.3, 35.3.3, 35.4.3 a fourth vertical groove 57.4 is formed. A fixing hook of the second railing element 23.2 of a second railing element 19.2 may protrude through the fourth vertical groove 57.4 or the fixing hook of the second railing element 23.2 of the second railing element 19.2 protrudes through it. The third vertical slot 49.4 and the fourth vertical slot 57.4 extend at an angle with respect to the first longitudinal axis 16.1 of the scaffold upright or along the first longitudinal axis 16.1 of the scaffold upright or parallel to the first longitudinal axis 16.1 of the first upright 17.1 of the scaffold. The third transverse joining element 35.1.3, 35.2.3, 35.3.3, 35.4.3 prevents the first railing element 19.1 with its first railing element fixing hook 23 received in the first fixing hook receiving space 38.1, 38.2, 38.3, 38.4.1, in particular in a horizontal use position 82.1, in particular horizontal, of the first railing element 19.1 from being lifted out of the first fixing hook receiving space 38.1, 38.2, 38.3, 38.4. If a second railing element 23.2 fixing hook of a second railing element 19.2 is also received in the first fixing hook receiving space 38.1, 38.2, 38.3, 38.4, the third transverse joining element 35.1.3, 35.2.3, 35.3.3, 35.4.3 also prevents the second railing element 19.2, preferably in a horizontal position of use 82.1, in particular horizontal, of the second railing element 19.2, from moving upwards, out of the first fixing hook receiving space 38.1, 38.2, 38.3, 38.4.

[0228] The fourth embodiment shown in Figures 6.1 to 6.6 has a total of three transverse connecting elements 35.4.1, 35.4.2, and 35.4.3, namely, a first transverse connecting element 35.4.1 of the above type, a second transverse connecting element 35.4.2 of the above type, and a third transverse connecting element 35.4.3 of the above type. Accordingly, the third transverse connecting element 35.4.3 serves to secure the first railing element 19.1 against upward displacement from the space for receiving the first fixing hook 38.4, which is formed between the first transverse connecting element 35.4.1 and the second transverse connecting element 35.4.2 and into which the first fixing hook of the railing element 23.1 of the first railing element 19.1 is received, at least partially. The third transverse connecting element 35.4.3 is welded to the first scaffold upright 17.1 above the first anchoring hook 38.4. The third transverse connecting element 35.4.3 extends away from the first scaffold upright 17.1 in a third transverse direction to a third end of the transverse connecting element 36.4.3. The third transverse connecting element 35.4.3 is attached to the upper end of the first retaining wall part 34.4 in one piece and of the same material through its third end of the transverse connecting element 36.4.3. The third transverse connecting element 35.4.3 is positioned centrally between the first transverse connecting element 35.4.1 and the second transverse connecting element 35.4.2 when viewed in a direction parallel to the first longitudinal axis 16.1 of the scaffold upright. The third transverse connecting element 35.4.3 has a width 59, viewed in the direction parallel to the vertical longitudinal axis 16.1 of the scaffold, which is at least 30%, at least 40%, or at least 50% of the first horizontal distance 37.4 between the first transverse connecting element 35.4.1 and the second transverse connecting element 35.4.2. The third transverse connecting element 35.4.3, the first transverse connecting element 35.4.1, and the first scaffold upright 17.1 define the receiving space for the second fixing hook 38.4 to receive the first fixing hook of the guardrail element 23.1 of the first guardrail element 19.1. The first fixing hook of the guardrail element 23.1 can be housed in the receiving space for the second fixing hook 38.4. The third transverse connecting element 35.4.3 and the second transverse connecting element 35.4.2 define a third anchoring hook receptacle 57.4 for receiving the second anchoring hook of the guardrail element 23.2, if provided, of the second guardrail element 19.2, if provided. Therefore, the third anchoring hook receptacle 57.4 can accommodate the anchoring hook 23.2 of the second guardrail element 19.2, if provided. The third transverse connecting element 35.4.3 is also directly welded to the first scaffold upright 17.1, such that the receptacle for the second anchoring hook 38.4 and the third receptacle for the anchoring hook 57.4 are also defined by the first scaffold upright 17.1 and/or by the first retaining wall section 34.4. The support for the first railing element 18.4 comprising the third transverse joining element 35.4.3 is made in such a way that the first railing element 19.1 resting on the first transverse joining element 35.4.1, in particular with the support wall portion of the first railing element 28 of the first fixing hook of the railing element 23.1, can be moved from a second intermediate railing mounting position 60, in which the first railing strut 19.1 with a horizontal line, i.e., the horizontal line 40, encloses a second angle 61 of at least 45 degrees or at least 70 degrees, can pivot, without jamming or locking, about one or the horizontal pivot axis to the horizontal, in particular horizontal, position of use 41, and vice versa. In the second intermediate position of the railing assembly 60 shown in Figure 10.2, the second angle 61 is approximately 58 degrees. The first horizontal distance 37.4 between the first cross-joint element 35.4.1 and the second cross-joint element 35.4.2 is configured or selected such that when the first fixing hook of the guardrail element 23.1 of the first guardrail element 19.1 in the receiving space of the first fixing hook 38.4 and the first guardrail element 19.1 is not supported in any other way, and when the wall portion of guardrail element 28 that delimits the opening 27 of the first fixing hook of the guardrail element 23.1 is supported on the first cross-joint element 35.4.1, the first guardrail element 19.1, when released, can pivot downwards with respect to the first scaffold upright 17.1 due to gravity or pivot downwards without the first guardrail element support 18.4 doing so or preventing it. This is illustrated by the example of the assembly sequence shown in Figures 10.1 to 10.6 (see, in particular, Figure 10.4).

[0230] According to the three embodiment examples shown in Figures 2 and 3.1 to 3.5 and in Figures 4.1 to 4.5 and 5.1 to 5.5, i.e., in the first, second and third embodiments, the first railing element support 18.1, 18.2, 18.3 comprises, in addition to the three transverse joining elements 35.1.1, 35.2.1, 35.3.1; 35.1.2, 35.2.2, 35.3.2; 35.1.3, 35.2.3, 35.3.3, i.e., a first transverse joining element 35.1.1, 35.2.1, 35.3.1 of the type mentioned, a second transverse joining element 35.1.2, 35.2.2, 35.3.2 of the type mentioned, and a third transverse joining element 35.1.3, 35.2.3, 35.3.3 of the type mentioned, also a fourth transverse joining element 35.1.4, 35.2.4, 35.3.4 to secure the first railing element 19.1 against displacement out of the receiving space of the first fixing hook 38.1, 38.2, 38.3 of the first railing element support 18.1, 18.2, 18.3. The fourth transverse joining element 35.1.4, 35.2.4, 35.3.4 and the second transverse joining element 35.1.2, 35.2.2, 35.3.2 define a third fixing hook reception space 57.1, 57.2, 57.3 to receive a second guardrail element 23.2 fixing hook from a second guardrail element 19.2 or to receive the second guardrail element 23.2 fixing hook from the second guardrail element 19.2. The fourth transverse joining element 35.1.4, 35.2.4, 35.3.4 is preferably rigidly fixed to the first scaffold upright 17.1 above the first fixing hook reception space 49.1, 49.2, 49.3. The fourth transverse joining element 35.1.4, 35.2.4, 35.3.4 extends away from the first scaffold upright 17.1 in a fourth transverse direction to a fourth end of the transverse joining element 36.1.4, 36.2.4, 36.3.4. The first retaining wall part 34.1, 34.2, 34.3 is also firmly, preferably rigidly, connected to the fourth end of the transverse joining element 36.1.4, 36.2.4, 36.3.4. The third transverse joining element 35.1.2, 35.2.2, 35.3.2 and the fourth transverse joining element 35.1.4, 35.2.4, 35.3.4 are arranged at a second horizontal distance 37.1.2, 37.2.2, 37.3.2 from each other and are joined by welding to the first scaffold upright 17.1. Accordingly, in each of these three embodiments, the railing element support 18.1, 18.2, 18.3 according to the invention comprises four transverse joining elements 35.1.1, 35.2.1, 35.3.1; 35.1.2, 35.2.2, 35.3.2; 35.1.3, 35.2.3, 35.3.3; 35.1.4, 35.2.4, 35.3.4. In each of these three embodiment examples, the four transverse joining elements 35.1.1, 35.2.1, 35.3.1; 35.1.2, 35.2.2, 35.3.2; 35.1.3, 35.2.3, 35.3.3; 35.1.4, 35.2.4, 35.3.4 are connected by welding directly to the first scaffold upright 17.1. Consequently, the receiving space for the first fixing hook 38.1, 38.2, 38.3, the receiving space for the second fixing hook 49.1, 49.2, 49.3, and the third receiving space for the fixing hook 57.1, 57.2, 57.3 are limited not only by the first retaining wall section 34.1, 34.2, 34.3, but also by the first scaffold upright 17.1 or its outer wall. Furthermore, in these three embodiments, the respective first support for the guardrail element 18.1, 18.2, 18.3 is manufactured as a single piece, and therefore each of them is manufactured as a single piece and from the same material or as a single piece. 1.1, 35.2.1, 35.3.1; 35.1.3, 35.2.3, 35.3.3, as well as the third receiving space of the fixing hook 57.1, 57.2, 57.3 between the second and the fourth transverse joining elements 35.1.2, 35.2.2, 35.3.2; 35.1.4, 35.2.4, 35.3.4 is delimited by the first scaffold upright 17.1 and by the first retaining wall part 34.1, 34.2, 34.3. In these three embodiments, the fourth transverse joining element 35.1.4, 35.2.4, 35.3.4 also extends at least partially or substantially both approximately or approximately perpendicular and/or approximately or approximately parallel to the first longitudinal axis 16.1 of the first upright 17; 17.1 of the scaffold and approximately or approximately parallel to the axis of curvature 25. In these three embodiment examples, the third transverse joining element 35.1.3, 35.2.3, 35.3.3 and the fourth transverse joining element 35.1.4, 35.2.4, 35.3.4 are each arranged at the same second height 58.2.1, 58.2.2, 58.2.3. In these three embodiment examples, the fixing hook of the second railing element 23.2, if provided, of the second railing element 19.2 can be received, at least partially, in the second or third receiving space of the fixing hook 49.1, 49.2, 49.3 or 57.1, 57.2, 57.3 of the first railing element support 18.1, 18.2, 18.3. In these three embodiments, a fifth vertical groove 49.1, 49.2, 49.3 is formed between the first transverse joining element 35.1.1, 35.2.1, 35.3.1 and the third transverse joining element 35.1.3, 35.2.3, 35.3.3, through which the first fixing hook of the handrail element 23.1 of the first handrail element 19.1 protrudes. Furthermore, a sixth vertical groove 57.1, 57.2, 57.3 is formed between the second transverse joining element 35.1.2, 35.2.2, 35.3.2 and the fourth transverse joining element 35.1.4, 35.2.4, 35.3.4, through which a second railing element fixing hook 23.2 of a second railing element 19.2 can protrude or protrudes or through which the second railing element fixing hook 23.2 of the second railing element 19.2 protrudes. The fifth vertical slot 49.1, 49.2, 49.3 and the sixth vertical slot 57.1, 57.2, 57.3 extend along or parallel to the first longitudinal axis 16.1 of the first upright 17.1 of the scaffold. If a second railing element fixing hook 23.2 of a second railing element 19.2 or the second railing fixing hook 23.2 of the second railing element 19.2 is also received in the first fixing hook receiving space 38.1, 38.2, 38.3, the fourth transverse joining element 35.1.4, 35.2.4, 35.3.4 prevents the second railing element 19.2, preferably in a horizontal use position 41, in particular horizontal, of the first railing element 19.1, from being lifted upwards out of the first fixing hook receiving space 38.1, 38.2, 38.3. The respective first retaining wall part 34.1, 34.2, 34.3 of said three embodiments extends, preferably along or parallel to the first vertical longitudinal axis of the scaffold 16.1, in a longitudinal extension direction. It has a front side 67 extending away from the first scaffold upright 17.1, a first longitudinal side 66.1, and a second longitudinal side 66.2. The respective first retaining wall part 34.1, 34.2, 34.3 is connected at the first longitudinal side 66.1 to both the first transverse connecting element 35.1.1, 35.2.1, 35.3.1 and the third transverse connecting element 35.1.3, 35.2.3, 35.3.3. The first part of the retaining wall 34.1, 34.2, 34.3 is connected on the second longitudinal side 66.2 to both the second transverse joining element 35.1.2, 35.2.2, 35.3.2 and the fourth transverse joining element 35.1.4, 35.2.4, 35.3.4.

[0232] In the first embodiment shown in Figures 2 and 3.1 to 3.5 and in the second embodiment shown in Figures 4.1 to 4.5, each end of transverse joining element 36.1.1, 36.1.2, 36.1.3, 36.1.4; 36.2.1, 36.2.2, 36.2.3, 36.2.4 of the respective four transverse joining elements 35.1.1, 35.1.2, 35.1.3, 35.1.4; 35.2.1, 35.2.2, 35.2.3, 35.2.4 has a first rounding or first curvature 68.1, 68.2, 68.3, 68.4, through which the respective end of the transverse joining element 35.1.1, 35.1.2, 35.1.3, 35.1.4; 35.2.1, 35.2.2, 35.2.3, 35.2.4 continues with the respective first associated retaining wall part 34.1; 34.2, such that the fifth vertical groove 49.1; 49.2 and the sixth vertical groove 57.1; 57.2 each extend, preferably continuously, towards the front side of the first retaining wall part respectively assigned 34.1; 34.2.

[0234] In the third embodiment shown in Figures 4.1 to 4.5, the first retaining wall part 34.3 has on its first longitudinal side 66.1 a second rounding or second curve 69.2 that is continuous in the longitudinal direction of extension, preferably formed from solid material, and which merges into the first transverse joining element 35.3.1 or the second transverse joining element 35.3.2. Furthermore, the first retaining wall part 34.3 has a third rounding or third curve 69.3 on its second longitudinal side 66.2, which is continuous in the longitudinal direction and is preferably formed from solid material and which merges into the third transverse joining element 35.3.3 and the fourth transverse joining element 35.3.4.

[0236] In the first embodiment shown in Figures 2 and 3.1 to 3.5, and in the second embodiment shown in Figures 4.1 to 4.5, and in the third embodiment shown in Figures 5.1 to 5.5, the first horizontal distance 37.1.1, 37.2.1, 37.3.1 between the first transverse joining element 35.1.1, 35.2.1, 35.3.1 and the second transverse joining element 35.1.2, 35.2.2, 35.3.2 of the support of the first railing element 18.1, 18.2, 18.3 is configured or selected such that when the fixing hook of the first railing element 23.1 of the first railing element 19.1 is received in the first receiving space of the fixing hook 38.1, 38.2, 38.3, and if the first railing element 19.1 is not supported in any other way, the railing element support wall portion 28 that delimits the notch 27 of the first fixing hook of the railing element 23.1 on the radially inside side 26 of the first fixing hook of the railing element 23.1 is displaced downwards against or over the first transverse joining element 35.1.1, 35.2.1, 35.3.1 and the radially outside side 30 of the fixing hook of the first railing element 23.1 is supported upwards against the second transverse joining element 35.1.2, 35.2.2, 35.3.2 such that the first railing element 19.1 is supported exclusively on the support of the first railing element 18.1, 18.2, 18.3. A first intermediate position 70 of the railing assembly, also called the holding position, is reached. This is illustrated in Figures 8.4 and 8.5 using the example of the first embodiment shown in Figures 2 and 3.1 to 3.5. This provides an advantageous starting position for assembling a main railing, in which an assembler, without having to pick up the first railing element 19.1, to which a second railing element support 18.1, 18.2, 18.3 corresponding to the first railing element support 18.1, 18.2, 18.3 is attached, can then grasp this second railing element support 18.1, 18.2, 18.3 of the second scaffold upright 17.2 with another railing element fixing hook 23.2 of the first railing element 19.1, which is provided at the second longitudinal end of the railing strut 22.2 of the first railing element 19.1, such that this other railing element fixing hook 23.2 of the first railing element 19.1 is inserted into a space of the fixing hook reception space 38.1, 38.2, 38.3 of the second guardrail element support 18.1, 18.2, 18.3 of the second scaffold upright 17.2, corresponding to the first fixing hook reception space 38.1, 38.2, 38.3. The erector can then rotate the first guardrail element 19.1 upwards to the horizontal mounting position or the use position 41 by means of the second scaffold upright 17.2 in order to ensure that the first guardrail element 19.1 is available as a pre-assembled guardrail to secure the next higher level before this next higher level is accessed. In the case of the three embodiments mentioned, the first horizontal distance 37.1.1, 37.2.1, 37.3.1 between the first transverse connecting element 35.1.1, 35.2.1, 35.3.1 and the second transverse connecting element 35.1.2, 35.2.2, 35.3.2 is configured or selected such that when the first guardrail element 19.1 is supported exclusively by the first guardrail element support 18.1, 18.2, 18.3 of the first scaffold upright 17.1, the first guardrail tie 21.1 forms a third angle 71 with one or more horizontal lines, i.e., with the first horizontal line 1, 18.2, 18.3 of the first scaffold upright 17.1, the first guardrail tie 21.1 forms a third angle 71 with a horizontal line, i.e., with the horizontal line 40, which is greater than 20 degrees or greater than 25 degrees or equal to or greater than 30 degrees. In the first intermediate position of the railing assembly 70 shown in Figures 8.4 and 8.6, i.e., in the clamping position shown of the first railing element 19.1 on the first railing element support 18.1, 18.2, 18.3, the first or third angle 71 is approximately 31 degrees.

[0238] According to the fifth embodiment shown in Figures 7.1 to 7.6, which is not the subject of the invention, the first railing element support 18.5 is rigidly attached to the first scaffold upright 17.1 by means of only two transverse connecting elements 35.5.1, 35.5.2. For this purpose, the first transverse connecting element 35.5.1 and the second transverse connecting element 35.5.2 are fixed by welding directly to the first scaffold upright 17.1. It may be provided herein that the first transverse joining element 35.5.1 has a first transverse joining element height 72.1 and a first vertical groove 49.5 to receive the first railing element fixing hook 23.1 of the first railing element 19.1 such that the first railing element fixing hook 23.1 of the first railing element 19.1 projects through the first vertical groove 49.5 into the first fixing hook receiving space 38.5 and/or that the second transverse joining element 35.5.2 has a second transverse joining element height 72.2 and a second vertical groove 57.5 to receive one or the second railing element fixing hook 23.2 of one or the second railing element 19.2, such that the second railing element fixing hook 23.2 of the second railing element 19.2 can projecting or protruding through the second vertical slot 57.5 into the first fixing hook receptacle 38.5. In this fifth embodiment, the first vertical slot 49.5 may be bounded on all sides by portions of the first wall of the first transverse connecting element 35.5.1 and/or designed as an elongated hole or as an elongated hole, and/or the second vertical slot 57.5 may be bounded on all sides by portions of the second wall of the second transverse connecting element 35.5.2 and/or designed as an elongated hole or as an elongated hole. The first vertical slot 49.5 and/or the second vertical slot 57.5 may extend along or parallel to the first longitudinal axis 16.1 of the first scaffold upright.

[0240] In all embodiments, the first guardrail element 19.1, when in the horizontal position of use 41, preferably at the top (see Figure 8.7) with its first guardrail element fixing hook 23.1 received at least partially in the first fixing hook receiving space 38.1, 38.2, 38.3, 38.4, 38.5, can be detachably mounted on the first guardrail element support 18.1, 18.2, 18.3, 18.4, 18.5. In the case of the first scaffold upright 17.1 being firmly mounted or fixed, it cannot be subsequently dismantled without rotating the first guardrail element 19.1 with respect to the first scaffold upright 17.1 about one or more downward horizontal pivot axes to an inclined dismantling position when the first scaffolding prop 17.1.

[0242] In the three embodiments shown in Figures 2 and 3.1 to 3.5 and in Figures 6.1 to 6.6 and in Figures 7.1 to 7.6, i.e., in the first, fourth and fifth embodiments, the fifth embodiment not being the subject of the invention, all the transverse joining elements 35.1.1, 35.1.2, 35.1.3, 35.1.4; 35.4.1, 35.4.2, 35.4.3; 35.5.1, 35.5.2 of the first scaffold upright 17 assigned respectively, are each welded to a fixing end of the transverse joining element 56.1.1, 56.1.2, 56.1.3, 56.1.4; 56.4.1, 56.4.2, 56.4.2; 56.5.1, 56.5.2. All transverse joining elements 35.1.1, 35.1.2, 35.1.3, 35.1.4; 35.4.1, 35.4.2, 35.4.3; 35.5.1, 35.5.2 are bent or inclined inside the first guardrail element support 18.1, 18.4, 18.5 or towards the first scaffold upright 17.1.

[0244] Also in the embodiment examples shown in Figures 4.1 to 4.5 and in Figures 5.1 to 5.5, i.e., in the second and third embodiment examples, all the transverse joining elements 35.2.1, 35.2.2, 35.2.3, 35.2.4; 35.3.1, 35.3.2, 35.3.3, 35.3.4 are each welded to the first scaffold upright 17.1 assigned respectively with a fixing end of the transverse joining element 56.2.1, 56.2.2, 56.2.3, 56.2.4; 56.3.1, 56.3.2, 56.3.3, 56.3.4. Unlike the three embodiments mentioned above, in these two embodiments all the transverse joining elements 35.2.1, 35.2.2, 35.2.4; 35.3.1, 35.3.2, 35.3.3, 35.3.4, except for the transition zones directly adjacent to the first retaining wall part 34.2, 34.3, are fixed by continuous straight-line welding to their respective fixing end of the transverse joining element 56.2.1, 56.2.2, 56.2.3, 56.2.4; 56.3.1, 56.3.2, 56.3.3, 56.3.4, to the first associated scaffold upright 17.1.

[0246] In the third embodiment shown in Figures 5.1 to 5.5, the first retaining wall portion 34.3 is V-shaped when viewed in a cross-section perpendicular to one of the first longitudinal axes 16.1 of the first scaffold upright 17.1 extending in the direction of the first longitudinal axis 16.1 of the scaffold upright. The V-shaped retaining wall portion 34.3 has a first wall portion 74.1 and a second wall portion 74.2, each of which extends into the interior of the first guardrail element support 18.3. The first wall portion 74.1 and the second wall portion 74.2 are arranged at a fourth angle 75 to each other, which is greater than 90 degrees and less than 170 degrees or greater than 90 degrees and less than 150 degrees. As illustrated in Figure 5.5, the fourth angle 75 in the third embodiment is approximately 145 degrees. At the transition between the first wall part 74.1 and the second wall part 74.2, a longitudinal edge 76 is formed that extends parallel to the first longitudinal axis 16.1 of the first upright 17.1 of the scaffold.

[0248] In all embodiments, the respective arrangement 15.1, 15.2 may be provided for to comprise a second scaffold upright 17.2 extending along a second longitudinal axis of scaffold upright 16.2, to which a second guardrail element support 18.1, 18.4 is attached, preferably rigid, preferably of the same configuration as the first guardrail element support 18.1, 18.4 of the first scaffold upright 17.1. The first guardrail element 19.1 has at one or the second longitudinal end 22.1 of its two longitudinal ends 22.1, 22.2 an additional or third guardrail element fixing hook 23.2, which has the same configuration as the fixing hook 23.1 of the first guardrail element. The other or third fixing hook of the guardrail element 23.2 is received, at least partially, in a fixing hook receiving space 38.1, 38.4 of the second guardrail element support 18.1, 18.4 of the second scaffold upright 17 corresponding to the first fixing hook receiving space 38.1, 38.4 of the first guardrail element support.2 (see, by way of example, figure 8.7 relating to a guardrail element support 18.1 according to the first embodiment according to figures 2 and 3.1 to 3.5 and see, by way of example, also figure 10.6 relating to a guardrail element support 18.4 according to the fourth embodiment according to figures 6.1 to 6.6).

[0250] In all embodiments, the first railing element support 18; 18.1, 18.2, 18.3, 18.4, 18.5 is made of sheet metal or a flat material. Preferably, the railing element support(s) 18; 18.1, 18.2, 18.3, 18.4, 18.5 and/or the scaffold upright(s) 17; 17.1, 17.2 and/or each railing element 19; 19.1, 19.2 is made of iron or, in particular, galvanized steel. However, it is also possible for the railing element support(s) and/or the scaffold upright(s) and/or each railing element to be made of aluminum, in particular extruded aluminum, or other materials.

[0252] In all embodiments, the railing element support(s) 18.1, 18.2, 18.3, 18.4, 18.5 are designed symmetrically with respect to a plane of symmetry 77 containing the longitudinal axis of the scaffold upright 16.1, 16.2 of the associated scaffold upright 17.1, 17.2. In all embodiments, the first retaining wall part 34.1, 34.2, 34.3, 34.4, 34.5 is made of a single piece and is formed from a single piece of solid material.

[0253] As by way of example in the fifth embodiment shown in Figures 7.1 to 7.6, which is not an object of the invention, it may be provided that the first retaining wall portion 34.5 of the first railing element support 18.5 or of each railing element support 18.5 comprises a clamping wedge 78 for releasably clamping the first railing element fixing hook 23.1 of the first railing element 19.1 or the second railing element fixing hook 23.2, if any, of the second railing element 19.2, if any, against movements relative to the associated railing element support 18.5 or the associated scaffold upright 17.1, 17.2. The first retaining wall part 34.5 may be provided to be made of a U-shaped profile 79. The latter may form a guide channel 80, which preferably extends along or parallel to the first longitudinal axis of the scaffold upright 16.1 of the first scaffold upright 17.1, for a wedge wall part of the fixing wedge 78, wherein the wedge wall part of the fixing wedge 78 may be received or is received.

[0255] The invention also relates to a scaffold not depicted in the figures, in particular to a modular scaffold, for example a frame scaffold, comprising several scaffold uprights, several scaffold stringers, preferably at least one scaffold deck or several scaffold decks, and at least one arrangement according to the invention.

[0257] In the sequence of Figures 8.1 to 8.7, a first example of an assembly sequence for the pre-assembled assembly of the first guardrail element 19.1 is shown. The first guardrail element 19.1 is initially detachably fixed by its first guardrail element fixing hook 23.1 to a first guardrail element support 18.1, according to the invention, of a first scaffold upright 17.1 already arranged in a first vertical installation or use position 82.1. This first guardrail element support 18.1 is a guardrail element support as shown, for example, in the first embodiment according to Figures 2 and 3.1 to 3.5 or in the second embodiment according to Figures 4.1 to 4.5 or in the third embodiment according to Figures 5.1 to 5.5. Next, the first guardrail element 19.1 is detachably fixed by its other guardrail element fixing hook 23.2 to a guardrail element support 18.1 of a second scaffold upright 17.2 according to the invention. The second scaffold upright 17.2 is then used to move the first guardrail element 19.1 upwards to a horizontal or horizontal operating position 41, in which the first guardrail element 19.1, mounted in the forward position, forms a guardrail for the immediately superior scaffold level. In this first example of an assembly sequence, the first or respective railing element support 18.1 is that railing element support that is designed according to the first embodiment according to Figures 2 and 3.1 to 3.5 or according to the second embodiment according to Figures 4.1 to 4.5 or according to the third embodiment according to Figures 5.1 to 5.5.

[0259] Figure 8.1 shows a first mounting position 81.1 of the first guardrail element 19.1 when hooked onto the first guardrail element bracket 18.1 of the first scaffold upright 17.1, wherein the first fixing hook 23.1 of the first guardrail element 19.1 is partially inserted with its free insertion end first into the second fixing hook receiving space of the first guardrail element bracket.

[0261] Figure 8.2 shows a second mounting position 81.2 of the railing element, in which the first fixing hook of the first railing element is carried with its insertion end free through the receiving space of the second fixing hook 49.1 of the support of the first railing element 18.1 to the receiving space of the first fixing hook 38.1 of the support of the first railing element 18.1.

[0263] Figure 8.3 shows a third mounting position 81.3 of the first railing element 19.1 in which the first railing element 19.1 has been lifted with its other railing element end (not shown) opposite the second mounting position 81.2 shown in Figure 8.2, such that the first railing element fixing hook 23.1 of the first railing element 19.1 is brought further into the first fixing hook receiving space 38.1 of the first railing element support 18.1. Figure 8.4 shows a fourth mounting position 81.4 of the first railing element 19.1, in which the first railing element fixing hook 23.1 of the first railing element 19.1 is carried further into the first receiving space of the fixing hook 38.1 of the first railing element support 18.1 of the first railing element support 18.1, i.e., until the supporting wall portion of the railing element 28 of the first railing element fixing hook 23.1 rests on the first cross-jointing element 35.1.1, 35.2.1, 35.3.1 of this first railing element support 18.1 shown in a section below right, and until the radial outer side 30 of the first railing element fixing hook 23.1 rests upwards against the second cross-jointing element 35.1.2, 35.2.2, 35.3.2 of the first railing element support 18.1, such that the first railing element 19.1 is held at the first or third inclined angle 39, 79 with respect to the first scaffold upright 17.1 in the clamping position 70, in which the first railing element 19.1 is not supported in any other way,

[0265] Figure 8.5 shows the fourth mounting position 81.4 of the first railing element 19.1 according to Figure 8.4 in a plan view of the first railing element support 18.1 from the front, with the hidden edges shown as dashed lines.

[0266] Figure 8.6 shows the fourth mounting position 81.4 in a view of the arrangement 15.1 according to Figures 8.4 and 8.5, wherein the other railing element fixing hook 23.2 of the first railing element 19.1, shown here on the right, is carried alongside a second scaffold upright 17.2 in such a way that it enters the receiving space of the fixing hook 38.1 of a second railing element support 18.1 of the second scaffold upright 17.2.

[0268] Figure 8.7 shows a fifth mounting position 81.5 in a further view of the arrangement 15.1 according to Figure 8.6, wherein the second scaffold upright 17.2 together with the first guardrail element 19.1 is now brought upward to a vertical installation or use position 82.1, wherein the second scaffold upright 17.2 extends approximately parallel to the first scaffold upright 17.1 and wherein the first guardrail element 19.1 is in a horizontal or horizontal use position 41, in which it forms a forward-mounted guardrail to secure the working or parking surfaces of an immediately superior scaffold level,

[0270] Figure 8.8 shows the arrangement 15.1 of the first scaffold upright 17.1, shown on the left in Figure 8.7, with the first guardrail element 19.1 fixed to its first guardrail element support 18.1 in the horizontal or horizontal use position 41, in a plan view of the first guardrail element support 18.1 from the front, with hidden edges shown as dashed lines,

[0272] Figure 8.9 shows arrangement 15.1 according to Figure 8.8 in a three-dimensional representation viewed from top right to bottom left.

[0274] In the sequence shown in Figures 10.1 to 10.6, a second example of an assembly sequence for the pre-assembly of the first guardrail element 19.1 is shown. In this case, the first guardrail element 19.1 is initially detachably attached by its first guardrail element fixing hook 23.1 to a first guardrail element support 18.4 according to the invention, in accordance with the fourth embodiment shown in Figures 6.1 to 6.6, to a first scaffold upright 17.1 already arranged in a first vertical installation or operating position 82.1. Subsequently, the first guardrail element 19.1 is detachably attached by its other guardrail element fixing hook 23.2 to a guardrail element support 18.4 of a second scaffold upright 17.2 according to the invention. Next, the second scaffold upright 17.2 is used to move the first guardrail element 19.1 upwards to a horizontal or horizontal position of use 41, in which the first guardrail element 19.1, mounted in the forward position, forms a guardrail for the scaffold level immediately above. In this second example of the assembly sequence, the respective guardrail element support 18.4 is a guardrail element support 18.4 according to the fourth embodiment illustrated in Figures 6.1 to 6.6.

[0276] Fig. 10.1 shows a first mounting position 83.1 of the first railing element 19.1 when hooked onto the first railing element support 18.4 according to the fourth embodiment, wherein the first railing element fixing hook 23.1 of the first railing element 19.1 is partially inserted with its free insertion end first into the second fixing hook receiving space 49.4 of this first railing element support 18.4.

[0278] Figure 10.2 shows a second mounting position 83.2 of the first railing element 19.1, wherein the first fixing hook of the railing element 23.1 of the first railing element 19.1 is carried with its insertion end free through the receiving space of the second fixing hook 49.4 of the support of the first railing element 18.4 to the receiving space of the first fixing hook 38.4 of the support of the first railing element 18.4.

[0280] Figure 10.3 shows a third mounting position 83.3 of the first railing element 19.1, wherein the first railing element 19.1 has been raised with its other railing element end (not shown) relative to the second mounting position 83.2 shown in Fig. 10.2, such that the first railing element fixing hook 23.1 of the first railing element 19.1 is brought further into the first receiving space of the fixing hook 38.4 of the first railing element support 18.4.

[0282] Figure 10.4 shows a fourth mounting position 83.4 of the first railing element 19.1, wherein the first railing element fixing hook 23.1 of the first railing element 19.1 is brought further into the first receiving space of the fixing hook 38.4 of the first railing element support 18.4 until part 28 of the support wall of the first railing element fixing hook 23.1 rests on the first cross-jointing element 35.4.1 of this first railing element support 18.4, shown below right in a cross section, without touching the first railing element support 18.4 at any other point.

[0284] Figure 10.5 shows the fourth mounting position 83.4 with a view of the arrangement 15.2 according to Figure 10.4, wherein the other railing element fixing hook 23.2 of the first railing element 19.2 is now joined with a second scaffold upright 17.2 in such a way that it is inserted into the receiving space of the fixing hook 38.4 of a second railing element support 18.4 of the second scaffold upright 17.2 according to the fourth embodiment. Here, the second scaffold upright 17.2 is supported at its lower end of scaffold upright, i.e., with the lower end of tube 43.2 of the scaffold tube 42, on a horizontally mounted scaffold base 83, which is fixed directly or indirectly to both the first scaffold upright 17.1 and the second scaffold upright 17.2.

[0286] Figure 10.6 shows a fifth mounting position 83.5 in the arrangement 15.2 according to Figure 10.5, wherein the second scaffold upright 17.2 together with the first guardrail element 19.1 is now moved upward to a second vertical installation position or use position 82.2, wherein the second scaffold upright 17.2 extends parallel to the first scaffold upright 17.1 and wherein the first guardrail element 19.1 is in a horizontal use position 41, in which it forms a forward-mounted guardrail to secure the working or parking surfaces of an immediately higher scaffold level.

[0288] Figure 10.7 shows the arrangement 15.2 of the first scaffold upright 17.1 shown on the left in Figure 10.6, to whose first guardrail element support 18.4 the first guardrail element 19.1 is fixed in the horizontal or horizontal use position 41 according to the fourth embodiment, in a three-dimensional representation viewed from top right to bottom left,

[0290] The invention is not limited to the advantageous embodiments shown in the figures. The embodiments described above may also be implemented in a manner different from that shown in the illustrative figures. The reference symbols used in the description of the figures and in the following claims do not limit the scope of protection of the invention.

[0292] List of reference symbols

[0294] 15.1 Provision

[0295] 15.2 Provision

[0296] 16.1 (First) longitudinal axis of the scaffold upright

[0297] 16.2 (Second) longitudinal axis of the scaffold upright

[0298] 17 Scaffold upright

[0299] 17.1 (First) scaffold upright

[0300] 17.2 (Second) scaffold upright

[0301] 18 Handrail element support

[0302] 18.1 (First/Second) Railing Element Support

[0303] 18.2 (First/Second) Railing Element Support

[0304] 18.3 (First/Second) Railing Element Support

[0305] 18.4 (First/Second) Railing Element Support

[0306] 18.5 (First/Second) Railing Element Support

[0307] 19 Railing element

[0308] 19.1 (First) railing element

[0309] 19.2 (Second) railing element

[0310] 20 (First/Second) Longitudinal axis of the railing strut

[0311] 21 Railing support

[0312] 21.1 (First) railing strut

[0313] 21.2 (Second) railing strut

[0314] 22.1 (First) longitudinal end of the railing strut

[0315] 22.2 (Second) longitudinal end of the railing strut

[0316] 23 Coupling element / fixing hooks of the railing element

[0317] 23.1 (First) coupling element / (first) fixing hook railing element

[0318] 23.2 (Second) coupling element / (second) railing element fixing hook

[0319] 24 Curvature (from 23)

[0320] 25 Axis of curvature

[0321] 26 Inner side (radial) (from 23)

[0322] 27 Notch

[0323] 28 Part of support wall of railing element

[0324] 29 Hook wall part

[0325] 30 Outer side (radial) (from 23)

[0326] 32.1 (First) point

[0327] 32.2 (Second) point

[0328] 33 Center (from 20)

[0329] 34.1 (First) part of retaining wall

[0330] 34.2 (First) part of retaining wall

[0331] 34.3 (First) part of retaining wall

[0332] 34.4 (First) part of retaining wall

[0333] 34.5 (First) part of retaining wall

[0334] 35.1.1 (First) cross-joint element (from 18.1)

[0335] 35.1.2 (Second) transverse connection element (from 18.1)

[0336] 35.1.3 (Third) cross-joint element (from 18.1)

[0337] 35.1.4 (Fourth) cross-joint element (from 18.1)

[0338] 35.2.1 (First) cross-joint element (from 18.2)

[0339] 35.2.2 (Second) transverse connection element (from 18.2)

[0340] 35.2.3 (Third) cross-joint element (from 18.2)

[0341] 35.2.4 (Fourth) cross-joint element (from 18.2)

[0342] 35.3.1 (First) cross-joint element (from 18.3)

[0343] 35.3.2 (Second) transverse connection element (from 18.3)

[0344] 35.3.3 (Third) cross-joint element (from 18.3)

[0345] 35.3.4 (Fourth) cross-joint element (from 18.3)

[0346] 35.4.1 (First) cross-joint element (from 18.4)

[0347] 35.4.2 (Second) transverse connection element (from 18.4)

[0348] 35.4.3 (Third) cross-joint element (from 18.3)

[0349] 35.5.1 (First) cross-joint element (from 18.5)

[0350] 35.5.2 (Second) transverse connection element (from 18.5)

[0351] 36.1.1 End of the transverse joining element (from 35.1.1)

[0352] 36.1.2 End of the transverse joining element (from 35.1.2)

[0353] 36.1.3 End of the transverse joining element (from 35.1.3)

[0354] 36.1.4 End of the transverse joining element (from 35.1.4)

[0355] 36.2.1 End of the transverse joining element (from 35.2.1)

[0356] 36.2.2 End of the transverse joining element (from 35.2.2)

[0357] 36.2.3 End of the transverse joining element (from 35.2.3)

[0358] 36.2.4 End of the transverse joining element (from 35.2.4)

[0359] 36.3.1 End of the transverse joining element (from 35.3.1)

[0360] 36.3.2 End of the transverse joining element (from 35.3.2)

[0361] 36.3.3 End of the transverse joining element (from 35.3.3)

[0362] 36.3.4 End of the transverse joining element (from 35.3.4)

[0363] 36.4.1 End of the transverse joining element (from 35.4.1)

[0364] 36.4.2 End of the transverse joining element (from 35.4.2)

[0365] 36.4.3 End of the transverse joining element (from 35.4.3)

[0366] 36.5.1 End of the transverse joining element (from 35.5.1)

[0367] 36.5.2 End of the transverse joining element (from 35.5.2)

[0368] 37.1.1 (First) horizontal distance (35.1.1 to 35.1.2)

[0369] 37.1.2 (Second) horizontal distance (35.1.3 to 35.1.4)

[0370] 37.2.1 (First) horizontal distance (35.2.1 to 35.2.2)

[0371] 37.2.2 (Second) horizontal distance (35.2.3 to 35.2.4)

[0372] 37.3.1 (First) horizontal distance (35.3.1 to 35.3.2)

[0373] 37.3.2 (Second) horizontal distance (35.3.2 to 35.3.4)

[0374] 37.4 (First) horizontal distance (35.4.1 to 35.4.2)

[0375] 37.5 (First) horizontal distance (35.5.1 to 35.5.2)

[0376] 38.1 (First) Fixing hook receiving space

[0377] 38.2 (First) Fixing hook receiving space

[0378] 38.3 (First) Fixing hook receiving space

[0379] 38.4 (First) Fixing hook receiving space

[0380] 38.5 (First) Fixing hook receiving space

[0381] 39 (First) angle (20-25-30 degrees)

[0382] 40 Horizontal line / Horizontal

[0383] 41 Position of use (horizontal/horizontal) (from 20)

[0384] 42 Scaffold tube (from 17)

[0385] 43.1 Tube end (first/top) (starting from 42)

[0386] 43.2 Tube end (second/lower) (from 42)

[0387] 44 Pipe connector

[0388] 45 (First) distance

[0389] 46 Handrail element support / handrail box (Additional)

[0390] 47 (Second) distance (100 cm)

[0391] 48 Joining element / rosette / perforated disc

[0392] 49.1 (Second) Fixing hook receiving space / (third/fifth) vertical slot 49.2 (Second) Fixing hook receiving space / (third/fifth) vertical slot 49.3 (Second) Fixing hook receiving space / (third/fifth) vertical slot 49.4 (Second) Fixing hook receiving space / (third) vertical slot 49.5 (Second) Fixing hook receiving space / (first) vertical slot 50.1 (First) Insertion end (free) (of 23)

[0393] 50.2 (Second) insertion end (free) (of 23)

[0394] 51 Wall thickness of the fixing hook

[0395] 52 Exterior surface

[0396] 53 (First) distance (minimum)

[0397] 54 (First) plane of symmetry

[0398] 56.1.1 Fixing end of the transverse joining element (from 35.1.1)

[0399] 56.1.2 Fixing end of the transverse joining element (from 35.1.2)

[0400] 56.1.3 Fixing end of the transverse joining element (from 35.1.3)

[0401] 56.1.4 Fixing end of the transverse joining element (from 35.1.4)

[0402] 56.2.1 Fixing end of the transverse joining element (from 35.2.1)

[0403] 56.2.2 Fixing end of the transverse joining element (from 35.2.2)

[0404] 56.2.3 Fixing end of the transverse joining element (from 35.2.3)

[0405] 56.2.4 Fixing end of the transverse joining element (from 35.2.4)

[0406] 56.3.1 Fixing end of the transverse joining element (from 35.3.1)

[0407] 56.3.2 Fixing end of the transverse joining element (from 35.3.2)

[0408] 56.3.3 Fixing end of the transverse joining element (from 35.3.3)

[0409] 56.3.4 Fixing end of the transverse joining element (from 35.3.4)

[0410] 56.4.1 Fixing end of the transverse joining element (from 35.4.1)

[0411] 56.4.2 Fixing end of the transverse joining element (from 35.4.2)

[0412] 56.4.3 Fixing end of the transverse joining element (from 35.4.3)

[0413] 56.5.1 Fixing end of the transverse joining element (from 35.5.1)

[0414] 56.5.2 Fixing end of the transverse joining element (from 35.5.2)

[0415] 57.1 (Third) fixing hook receiving space / (fourth/sixth) vertical slot

[0416] 57.2 (Third) fixing hook receiving space / (fourth/sixth) vertical slot

[0417] 57.3 (Third) fixing hook receiving space / (fourth/sixth) vertical slot

[0418] 57.4 (Third) fixing hook receiving space / (fourth) vertical slot

[0419] 57.5 (Third) fixing hook receiving space / (second) vertical slot

[0420] 58.1.1 (First) height

[0421] 58.1.2 (First) height

[0422] 58.1.3 (First) height

[0423] 58.1.4 (First) height

[0424] 58.1.5 (First) height

[0425] 58.2.1 (Second) height

[0426] 58.2.2 (Second) height

[0427] 58.2.3 (Second) height

[0428] 59 Width

[0429] 60 (Second) intermediate rail mounting position

[0430] 61 (Second) angle

[0431] 66.1 (First) longitudinal side

[0432] 66.2 (Second) longitudinal side

[0433] 67 Front side

[0434] 68.1 (First) rounding/curvature

[0435] 68.2 (First) rounding/curvature

[0436] 68.3 (First) rounding/curvature

[0437] 68.4 (First) rounding/curvature

[0438] 69.2 (Second) rounding/curvature

[0439] 69.3 (Third) rounding/curvature

[0440] 70 (First) intermediate rail mounting position / clamping position / clamping position 71 (Third) angle

[0441] 72.1 (First) height of the transverse joining element (from 35.5.1)

[0442] 72.2 (Second) height of the transverse joining element (from 35.5.2)

[0443] 74.1 First part of wall

[0444] 74.2 Second part of wall

[0445] 75 Fourth angle

[0446] 76 Longitudinal edge

[0447] 77 Plane of symmetry (longitudinal)

[0448] 78 Fixing wedge

[0449] 79 U-shaped profile

[0450] 80 Guide Channel

[0451] 81.1 First mounting position

[0452] 81.2 Second mounting position

[0453] 81.3 Third mounting position

[0454] 81.4 Fourth mounting position

[0455] 81.5 Fifth mounting position

[0456] 82.1 Installation position/position of use (vertical) (from 17.1)

[0457] 82.2 Installation position/position of use (vertical) (from 17.2)

[0458] 83.1 First mounting position

[0459] 83.2 Second mounting position

[0460] 83.3 Third mounting position

[0461] .4 Fourth mounting position

[0462] .4 Fifth mounting position

[0463] Scaffolding floor

Claims (15)

1. CLAIMS 1. Arrangement (15.1, 15.2) of scaffolding components for a scaffold comprising a scaffold upright (17; 17.1, 17.2), scaffold stringers, and guardrail elements (19; 19.1, 19.2) for securing working or parking surfaces, having a first scaffold upright (17; 17.1) extending along a first longitudinal axis of the scaffold upright (16; 16.1) and a first guardrail element support (18; 18.1, 18.2, 18.3, 18.4, 18.5) fixed thereto.1), which is configured to cooperate with guardrail elements (19; 19.1, 19.2) of the guardrail elements (19; 19.1, 19.2), wherein a first element The guardrail (19; 19.1) is intended to secure work or parking surfaces, and is detachably attached to the first guardrail support (18; 18.1, 18.2, 18.3, 18.4, 18.5). It has a first bar-shaped guardrail strut (21; 21.1) and coupling elements provided at the longitudinal ends of the guardrail strut (22.1, 22.2) directed in opposite directions to detachably fix the first guardrail (19; 19.1) by means of the first guardrail support (18; 18.1, 18.2, 18.3, 18.4, 18.5) to the first scaffold upright (17; 17.1) and to a second scaffold upright (17; 17.2) spaced horizontally, wherein the first railing element (19; 19.1) has, at a first longitudinal end of the railing strut (22.1) of its two longitudinal ends of the railing strut (22.1, 22.2) which are directed in opposite directions to each other, a first coupling element of the coupling elements in the form of a first railing element fixing hook (23.1), which has a curvature (24) about a curvature axis (25) perpendicular to a longitudinal axis of the railing strut (20) of the first railing strut (21; 21.1) of the first railing element (19; 19.1) and which is provided on a radially inner side (26) of the first railing element fixing hook (23.1) with a notch (27) which is delimited by a portion of the railing element support wall (28) of the first railing element fixing hook of railing (23.1) and by a hook wall portion (29) on the radially inner side (26) of the first fixing hook of the railing element (23.1), extending from the railing element support wall portion (28) and transversely to the longitudinal axis of the railing strut (20) of the first railing strut (19.1) and wherein the notch (27) is at a certain distance (31) to a point on a radially outside side (30) of the first fixing hook of the railing element (23.1), the distance (31) gradually increasing from a first point (32.1) on the radially outside side (30) of the first fixing hook of the railing element (23.1) to a second point (32.2) on the radially outside side (30) of the first fixing hook of the first railing element (23.1), and wherein the second point (32.2) is farther from a center (33) of the first railing element (19; 19.1) than the first point (32.1), and wherein the first railing element support (18; 18.1, 18.2, 18.3, 18.4, 18.5) comprises a first retaining wall portion (34.1, 34.2, 34.3, 34.4, 34.5) for securing the first railing element (19; 19.1) against lateral pullout of the first railing element (19; 19.1) from the first railing element support (18; 18.1, 18.2, 18.3, 18.4, 18.5) in the opposite direction to the first scaffold upright (17; 17.1), a first transverse joining element (35.1.1, 35.2.1, 35.3.1, 35.4.1, 35.5.1) for supporting the first railing element (19; 19.1) and a second transverse joining element (35.1.2, 35.2.2, 35.3.2, 35.4.2, 35.5.2) to support a second railing element (19; 19.2) to secure the working or parking surfaces, and wherein the first transverse joining element (35.1.1, 35.2.1, 35.3.1, 35.4.1, 35.5.1) extends in a first transverse direction away from the first scaffold upright (17; 17.1) to a first end of a transverse joining element (36.1.1, 36.2.1, 36.3.1, 36.4.1, 36.5.1), which is firmly attached to the first retaining wall part (34.1, 34.2, 34.3, 34.4, 34.5), and wherein the second transverse joining element (35.1.2, 35.2.2, 35.3.2, 35.4.2, 35.5.2) extends in a second transverse direction away from the scaffold upright (17; 17.1) to a second transverse end of the joining element (36.1.2, 36.2.2, 36.3.2, 36.4.2, 36.5.2), which is firmly attached to the first part of the retaining wall (34.1, 34.2, 34.3, 34.4, 34.5), and wherein the first transverse joining element (35.1.1, 35.2.1, 35.3.1, 35.4.1, 35.5.1) and the second transverse joining element (35.1.2, 35.2.2, 35.3.2, 35.4.2, 35.5.2) are fixed to the first scaffold upright (17; 17.1) at a first horizontal distance (31.1.1, 37.2.1, 37.3.1, 37.4) from each other, and where the first part of the retaining wall (34.1, 34.2, 34.3, 34.4, 34.5), the first transverse joining element (35.1.1, 35.2.1, 35.3.1, 35.4.1, 35.5.1) and the second transverse joining element (35.1.2, 35.2.2, 35.3.2, 35.4.2, 35.5.2) delimit a first space for receiving the fixing hook (38.1, 38.2, 38.3, 38.4, 38.5) to receive the first fixing hook of the railing element (23.1) of the first railing element (19; 19.1), and wherein the first guardrail element (19; 19.1) supported on the first transverse joining element (35.1.1, 35.2.1, 35.3.1, 35.4.1, 35.5.1) extends from a first intermediate guardrail mounting position (70), wherein the first guardrail element (19; 19.1) extends with a second longitudinal guardrail strut end (22.2) from its two longitudinal guardrail strut ends (22.1, 22.2) extending obliquely towards the first scaffold upright (17; 17.1) and away from it downwards at a first angle (39) extending at least 20 degrees or at least 25 degrees or at least 30 degrees with respect to an imaginary horizontal line (40) and wherein the first guardrail element fixing hook (23.1) is received in the reception space of the first fixing hook (38.1, 38.2, 38.3, 38.4, 38.5) of the first railing element support (18; 18.1, 18.2, 18.3, 18.4, 18.5), in relation to the first support of railing element (18; 18.1, 18.2, 18.3, 18.4, 18.5) or, as the case may be, with respect to the first scaffold support (18; 18.1, 18.2, 18.3, 18.4, 18.5). with respect to the first scaffold upright (17; 17.1) as a main railing may pivot upwards to a horizontal use position (41), in which the first railing strut (21.1) of the first railing element (19; 19.1) extends parallel to the horizontal line (40), characterized because the first transverse joining element (35.1.1, 35.2.1, 35.3.1, 35.4.1, 35.5.1) and the second transverse joining element (35.1.2, 35.2.2, 35.3.2, 35.4.2, 35.5.2) are each welded directly to the first scaffold upright (17; 17.1), such that the receiving space for the first fixing hook (38.1, 38.2, 38.3, 38.4, 38.5) is also delimited by the first scaffold upright (17; 17.1) and/or because the first guardrail element support (18; 18.1, 18.2, 18.3, 18.4, 18.5) is made in one piece and/or is made of a single piece, and because the support of the first guardrail element (18.1, 18.2, 18.3, 18.4) comprises a third transverse joining element (35.1.3, 35.2.3, 35.3.3, 35.4.3) to secure the first guardrail element (19; 19.1) against lifting out of the receiving space of the first fixing hook (38.1, 38.2, 38.3, 38.4) of the first guardrail element support (18.1, 18.2, 18.3, 18.4), wherein the third transverse joining element (35.1.3, 35.2.3, 35.3.3, 35.4.3) is fixed to the first scaffold upright (17; 17.1) above the receiving space of the first fixing hook (38.1, 38.2, 38.3, 38.4) and extends from the first scaffold upright (17; 17.1) in a third transverse direction and extends from the first scaffold support (17; 17.1) in a third transverse direction to a third end of the transverse connecting element (36.1.3, 36.2.3, 36.3.3, 36.4.3), and wherein the third transverse connecting element (35.1.3, 35.2.3, 35.3.3, 35.4.3) and the first transverse connecting element (35.1.1, 35.2.1, 35.3.1, 35.4.1, 35.5.1) define a second fixing hook housing space (49.1, 49.2, 49.3, 49.4) to receive the first fixing hook of the element of railing (23.1) of the first railing element (19; 19.1), in which the first fixing hook of the railing element (23.1) of the first railing element (19; 19.1) is received, and in which the first retaining wall part (34.1, 34.2, 34.3, 34.4) is also fixedly attached to the third end of the transverse joining element (36.1.3, 36.2.3, 36.3.3, 36.4.3). 2. Arrangement according to claim 1, characterized in that the third transverse joining element (35.1.3, 35.2.3, 35.3.3, 35.4.3) is welded directly to the first scaffold upright (17; 17.1), such that the receiving space of the second fixing hook (49.1, 49.2, 49.3, 49.4) is also delimited by the first scaffold upright (17; 17.1) and/or by the first part of the retaining wall (34.1, 34.2, 34.3, 34.4). 3. Arrangement according to one of claims 1 or 2, characterized in that the third transverse joining element (35.1.3, 35.2.3, 35.3.3, 35.4.3) extends at least partially, or substantially, both perpendicular and/or parallel to the first longitudinal axis of the scaffold upright (16.1) of the first scaffold upright (17; 17.1), and parallel to the axis of curvature (25). 4. Arrangement according to one of claims 1 to 3, characterized in that the fixing hook of the second railing element (23.2) of the second railing element (19; 19.2) is received in the receiving space of the second fixing hook of the support of the first railing element (18.1, 18.2, 18.3, 18.4). 5. Arrangement according to any one of claims 1 to 4, characterized in that between the first transverse joining element (35.1.1, 35.2.1, 35.3.1, 35.4.1, 35.5.1) and the third transverse joining element (35.1.3, 35.2.3, 35.3.3, 35.4.3), a third vertical groove (49.1, 49.2, 49.3, 49.4) is formed through which the first fixing hook of the railing element (23.1) of the first railing element (19; 19.1) protrudes, and that between the second transverse joining element (35.1.2, 35.2.2, 35.3.2, 35.4.2) and the third transverse joining element (35.1.3, 35.2.3, 35.3.3, 35.4.3), there is a fourth vertical slot (57.1, 57.2, 57.3, 57.4) formed, through which a second railing element fixing hook (23.2) of a second railing element (19; 19.2) can protrude or protrudes or through which the second railing element fixing hook (23.2) of the second railing element (19; 19.2) protrudes. 6. Arrangement according to claim 5, characterized in that the third vertical slot (49.1, 49.2, 49.3, 49.4) and the fourth vertical slot (57.1, 57.2, 57.3, 57.4) extend at an angle with respect to the first longitudinal axis of the scaffold upright (16.1) or along the first longitudinal axis of the scaffold upright (16.1) or parallel to the first longitudinal axis of the scaffold upright (16.1) of the first scaffold upright (17; 17.1). 7. Arrangement according to any one of claims 1 to 6, characterized in that the third transverse joining element (35.1.3, 35.2.3, 35.3.3, 35.4.3) prevents the first railing element (19; 19.1) with its first railing element fixing hook (23.1), received in the first fixing hook receiving space (38.1, 38.2, 38.3, 38.4), from being raised upwards from the first fixing hook receiving space (38.1, 38.2, 38.3, 38.4). 8. Arrangement according to any one of claims 1 to 7, characterized in that the third transverse joining element (35.1.3, 35.2.3, 35.3.3, 35.4.3) prevents a second railing element (19; 19.2), or the second railing element (19; 19.2) whose fixing hook of the second railing element (23.2) is received in the first receiving space of the fixing hook (38.1, 38.2, 38.3, 38.4), from being lifted from the first receiving space of the fixing hook (38.1, 38.2, 38.3, 38.4). 9. An arrangement according to any one of claims 1 to 8, characterized in that the first railing element support (18.1, 18.2, 18.3) comprises a fourth transverse joining element (35.1.4, 35.2.4, 35.3.4) for securing the first railing element (19; 19.1) against its lifting from the receiving space of the first fixing hook (38.1, 38.2, 38.3) of the first railing element support (18.1, 18.2, 18.3), and wherein the fourth transverse joining element (35.1.4, 35.2.4, 35.3.4) and the second transverse joining element (35.1.2, 35.2.2, 35.3.2) delimit a third receiving space of the fixing hook (57.1, 57.2, 57.3) to receive a second railing element fixing hook (23.2) of a second railing element (19; 19.2) or to receive the second railing element fixing hook (23.2) of the second railing element (19; 19.2), wherein the fourth transverse joining element (35.1.4, 35.2.4, 35.3.4) is fixed to the first scaffold upright (17; 17.1) above the first receiving space of the fixing hook (38.1, 38.2, 38.3) and extends from the first scaffold upright (17; 17.1) in a fourth transverse direction to a fourth transverse end of the joining element (36.1.4, 36.2.4, 36.3.4), and wherein the first retaining wall portion (34.1, 34.2, 34.3) is also firmly attached to the fourth end of the transverse joining element (36.1.4, 36.2.4, 36.3.4), and wherein the second transverse joining element (35.1.2, 35.2.2, 35.3.2) and the fourth joining element transverse (35.1.4, 35.2.4, 35.3.4) are fixed to the first scaffold upright (17; 17.1) at a second horizontal distance (37.1.2, 37.2.2, 37.3.2) between them. 10. Arrangement according to claim 9, characterized in that the fourth transverse joining element (35.1.4, 35.2.4, 35.3.4) is welded directly to the first scaffold upright (17; 17.1), such that the third receiving space of the fixing hook (57.1, 57.2, 57.3) is also delimited by the first scaffold upright (17; 17.1) and/or by the first part of the retaining wall (34.1, 34.2, 34.3). 11. Arrangement according to one of claims 9 or 10, characterized in that the third transverse joining element (35.1.3, 35.2.3, 35.3.3) and the fourth transverse joining element (35.1.4, 35.2.4, 35.3.4) are arranged at the same second height (58.2.1, 58.2.2, 58.2.3). 12. Arrangement according to one of claims 9 to 11, characterized in that the fixing hook of the second railing element (23.2) of the second railing element (19; 19.2) is received in the third receiving space of the fixing hook (57.1, 57.2, 57.3) of the first railing element support (18.1, 18.2, 18.3). 13. An arrangement according to any one of claims 9 to 12, characterized in that a fifth vertical groove (49.1, 49.2, 49.3) is formed between the first transverse joining element (35.1.1, 35.2.1, 35.3.1) and the third transverse joining element (35.1.3, 35.2.3, 35.3.3), through which the first fixing hook of the handrail element (23.1) of the first handrail element (19; 19.1) protrudes, and in that a sixth vertical groove (57.1, 57.2, 57.3) is formed between the second transverse joining element (35.1.2, 35.2.2, 35.3.2) and the fourth transverse joining element (35.1.4, 35.2.4, 35.3.4), through which a second railing element fixing hook (23.2) of a second railing element (19; 19.2) may protrude or protrude or through which the second railing element fixing hook (23.2) of the second railing element (19; 19.2) protrudes. 14. Arrangement according to any one of claims 9 to 13, characterized in that the fourth transverse joining element (35.1.4, 35.2.4, 35.3.4) prevents a second railing element (19; 19.2), or the second railing element (19; 19.2) whose fixing hook of the second railing element (23.2) is received in the first receiving space of the fixing hook (38.1, 38.2, 38.3), from being lifted from the first receiving space of the fixing hook (38.1, 38.2, 38.3). 15. Arrangement according to any one of claims 1 to 14, characterized in that the first horizontal distance (37.1.1, 37.2.1, 37.3.1) between the first transverse joining element (35.1.1, 35.2.1, 35.3.1) and the second transverse joining element (35.1.2, 35.2.2, 35.3.2) of the support of the first railing element (18.1, 18.2, 18.3) is configured such that, when the first fixing hook of the railing element (23.1) of the first railing element (19; 19.1) is received in the first receiving space of the fixing hook (38.1, 38.2, 38.3) and the first railing element (19; 19.1) is not supported in any other way, the supporting wall portion of the element of railing (28) that delimits the notch (27) of the first fixing hook of the railing element (23.1) on the radially inner side (26) of the first fixing hook of the railing element (23.1) is supported against or on the first transverse joining element (35.1.1, 35.2.1, 35.3.1) and because the radially outer side (30) of the fixing hook of the first railing element (23.1) is supported against the second transverse joining element (35.1.2, 35.2.2, 35.3.2) in such a way that the first railing element (19; 19.1) is supported exclusively on the support of the first railing element (18.1, 18.2, 18.3).