WO2026003003A1 - Procédé de construction d'un dispositif antichute - Google Patents

Procédé de construction d'un dispositif antichute

Info

Publication number
WO2026003003A1
WO2026003003A1 PCT/EP2025/067764 EP2025067764W WO2026003003A1 WO 2026003003 A1 WO2026003003 A1 WO 2026003003A1 EP 2025067764 W EP2025067764 W EP 2025067764W WO 2026003003 A1 WO2026003003 A1 WO 2026003003A1
Authority
WO
WIPO (PCT)
Prior art keywords
grid
catch
support device
transverse
yoke
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/EP2025/067764
Other languages
German (de)
English (en)
Inventor
Christoph BARON
Alexander Augustin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Doka GmbH
Original Assignee
Doka GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Doka GmbH filed Critical Doka GmbH
Publication of WO2026003003A1 publication Critical patent/WO2026003003A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
    • E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
    • E04G11/38—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings for plane ceilings of concrete
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
    • E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
    • E04G11/48—Supporting structures for shutterings or frames for floors or roofs
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
    • E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
    • E04G11/48—Supporting structures for shutterings or frames for floors or roofs
    • E04G11/50—Girders, beams, or the like as supporting members for forms
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/32—Safety or protective measures for persons during the construction of buildings
    • E04G21/3261—Safety-nets; Safety mattresses; Arrangements on buildings for connecting safety-lines
    • E04G21/3266—Safety nets

Definitions

  • the invention relates to a method for constructing a safety device on a support for a formwork element or a precast concrete element, comprising the steps: a) providing the support which
  • first and a second transverse stiffener preferably a first and a second crossbar, to form a tension- and compression-resistant connection between the first and the second yoke beam
  • the invention relates to a method for manufacturing a precast concrete ceiling and a method for constructing a ceiling formwork.
  • the invention relates to a support device with a safety catch, comprising: an arrangement of supports, a first and a second yoke beam connected to the arrangement of supports, a first and a second cross stiffener, preferably a first and a second crossbar arranged substantially perpendicular to the first and second yoke beams, and a safety catch grid to secure a gap between the first and second yoke beams.
  • formwork elements When erecting formwork for a slab, formwork elements are typically arranged on a support structure consisting of vertical columns and horizontal beams, preferably designed as yoke beams and crossbeams.
  • the formwork elements are usually laid out manually by one or more installers. This poses a risk to the installer, as there is a gap between the formwork beams that are not yet fitted with formwork elements. are known to crash.
  • a support structure consisting of vertical columns and horizontal joists is typically used, with the precast elements preferably placed directly onto the joists. This process also requires work where one or more fitters must climb onto the support structure.
  • the precast elements are usually placed onto the joists using a crane. However, tasks such as precisely aligning the precast elements or releasing the crane chains are carried out manually.
  • the fitters are usually standing on a previously laid precast element. This also poses a risk of the fitters falling through the gaps between the formwork beams, which are not yet covered with precast concrete elements.
  • WO 2024/083893 discloses a safety device for slab formwork with a grid that has a projection, preferably a raised edge, on one side.
  • the safety device is placed on top of the formwork beams so that the projection or raised edge points upwards.
  • an edge of the panel can be brought into contact with the raised edge of the grid, allowing the entire assembly of formwork panel and safety device to be moved longitudinally along the beams until the panel rests on the beams.
  • the described safety device also reaches its limits in confined spaces or corridors, as sufficient space is needed to move the grids. Horizontal space must be available.
  • the safety device of WO 2024/083893 Al would also not be suitable for use in the production of a precast concrete slab, as the safety device resting on the beams would hinder the placement of the precast concrete elements onto these beams.
  • US Patent 2019/0063086 A1 discloses another known formwork system with a safety device and a method for installing formwork panels in this formwork system. During initial assembly, the safety device is hooked into a guide attached to the longitudinal beams of the formwork system.
  • the guide as shown in Figures 1-10, is designed as a C-shaped profile, which, however, is disadvantageously prone to contamination. Furthermore, the folding mechanism shown, which folds the guide upwards when the safety device is attached, is also susceptible to contamination and malfunctions. In all the designs shown, the guides must, disadvantageously, first be mounted on the longitudinal beams of an existing guide system before the safety device can be used. Additionally, the safety device must be repeatedly repositioned when placing formwork panels, which entails additional work.
  • the safety device shown in US 2019/0063086 Al can be moved along the longitudinal axis of the formwork system, for which some designs also incorporate rollers. This creates the risk that the safety device could shift due to a longitudinal force (for example, caused by a worker falling or an object falling into the safety device), thereby creating an unsecured gap through which a worker could fall. On inclined planes, there is a risk that the grid could slip longitudinally under the influence of gravity.
  • This prior art design employs a complex mechanism to prevent longitudinal displacement. proposed, which in turn is prone to contamination and malfunctions.
  • WO 2019/069246 Al shows a spacer element for supporting two parallel joists of a slab formwork, which are supported by slab props, as well as a fall protection system for slab formwork using the spacer element.
  • the fall protection system includes a net that is suspended from retaining elements connected to the spacer element. Suspending the net poses a safety risk for the installer, as they must either climb onto the slab formwork or at least onto a ladder. Furthermore, suspending the net is relatively time-consuming. The net must be suspended at all four corners, requiring four work steps at four different positions per net. Additionally, the retaining elements must first be attached to the existing slab formwork before the fall protection system can be used.
  • a support device for formwork elements or precast concrete components is also known, which has transverse stiffeners to form a tensile and compressive rigid connection between the yoke beams.
  • the function of the known transverse stiffeners is to provide additional stability to the entire support device.
  • a support device with transverse stiffeners is described, for example, in EP 3 719 236 Bl.
  • the object of the present invention is to alleviate or eliminate at least some disadvantages of the prior art.
  • the invention preferably aims to provide a safety catch for a support device that is equally suitable for formwork elements and precast concrete elements, contains no complex, contamination-prone or fault-prone parts, and can be assembled simply, quickly and safely.
  • This task is accomplished by a method for constructing a catch safety device according to claim 1, a method for manufacturing A precast concrete slab according to claim 5, a method for constructing a slab formwork according to claim 6, and a support device according to claim 7 are solved.
  • Preferred embodiments of the invention are specified in the dependent claims.
  • providing the catching grid comprises the following steps: b) connecting a first end region of the catching grid to the first transverse stiffener, wherein the catching grid is arranged in an intermediate position directed downwards from the first transverse stiffener, preferably inclined obliquely downwards, and in particular substantially vertically; b2) pivoting the catching grid about a pivot axis formed by the first transverse stiffener; and b3) connecting a second end region of the catching grid to the second transverse stiffener, so that the catching grid is arranged in a securing position that secures the space between the first and the second yoke beam.
  • ‘longitudinal direction’ means a direction that runs substantially parallel to the longitudinal axes of the elongated yoke beams
  • ‘transverse direction’ means a direction that runs substantially horizontally and substantially transversely to the longitudinal axis of the yoke beams, preferably substantially orthogonal to the longitudinal direction of the yoke beams.
  • All directional and length specifications relating to the support device refer to the intended state of use, i.e., the assembled state of the support device.
  • the first and second yoke supports are meant. Accordingly, the following refer to... the cross-stiffenings on the first and second cross-stiffening.
  • the supports are preferably arranged substantially vertically.
  • formwork supports are provided.
  • the supports preferably the formwork supports, are telescopic.
  • each support has a head section which is connected to the respective yoke beam.
  • the yoke beams rest essentially horizontally on the arrangement of supports.
  • an inclined arrangement of the yoke beams can also be provided, for example, by using supports that extend to different lengths. The location and direction specifications must then be transferred accordingly.
  • Each yoke beam is supported by at least two supports spaced apart along the longitudinal direction of the yoke beam.
  • the cross braces are designed as tension- and compression-resistant cross connections between the yoke beams. This means that the horizontal distance between two yoke beams is essentially fixed by the cross connections, so that the horizontal distance between two yoke beams cannot be significantly altered by the application of a force in the transverse direction, in particular a tensile or compressive force in the transverse direction.
  • the opposite ends of at least one of the cross braces can be connected to the heads of two supports.
  • the opposite ends of at least one of the cross braces can be connected to brackets, preferably retaining clips, which can be attached to the yoke beams between the supports.
  • the cross braces are arranged essentially horizontally and essentially orthogonally to the yoke beams.
  • the support structure can also include crossbeams that are placed transversely on the yoke beams.
  • the cross braces are arranged at or below the level of the yoke beams.
  • the cross braces are preferably located below the level of a
  • the cross braces are arranged on the upper side of the yoke beams. They are preferably not designed as load-bearing components of the support structure for the concrete element being produced (e.g., precast concrete element or cast-in-place concrete slab).
  • the cross braces are preferably not in contact with components placed on the upper side of the yoke beams, and preferably not in contact with precast concrete elements or formwork elements placed on the upper side of the yoke beams. Unlike the crossbeams, the cross braces are therefore not arranged above the yoke beams. In particular, the cross braces are located below the level of any formwork elements or precast concrete elements placed on top.
  • the cross braces increase the stability of the support structure and make it possible to partially or completely dispense with the attachment of lateral support legs to the vertical supports. By partially or completely dispensing with lateral support legs, a larger usable area is available on the ground beneath the support structure.
  • the cross braces serve primarily as bracing elements for the formwork and essentially only bear the weight of horizontal loads during assembly, the weight of the fall protection system, and, in the event of a fall into the fall protection system, the weight of the person. Specifically, the cross braces do not bear the weight of formwork elements and the resulting concrete structure, nor the weight of a precast concrete slab. Unlike the crossbeams, the cross braces are not designed as load-bearing components of the support structure for the concrete element being produced (i.e., the concrete structure produced with the formwork elements or the precast concrete slab). The cross braces also ensure that the spacing between two joists remains essentially constant along their entire length. With respect to the operational loads, the cross braces are essentially non-deformable, thus achieving a tensile and compressive strength cross connection between the joists.
  • the cross stiffeners are telescopically designed.
  • the cross braces are made of a different material than the yoke beams.
  • the yoke beams can be made of wood and the cross braces can be made of metal.
  • the catch grid has a greater longitudinal extent than its transverse extent.
  • the longitudinal extent refers to the extent in the longitudinal direction of the yoke beams, and the transverse extent to the extent in the longitudinal direction of the transverse stiffeners.
  • the catch grid when pivoted upwards around the first transverse stiffener, it pivots over its shorter side, i.e., its transverse side.
  • the safety net serves as fall protection during work where a technician needs to climb onto the support structure. During this work, the safety net, and in particular the safety net itself, is not to be accessed. Therefore, the safety net is not designed as a work platform.
  • the installer(s) When installing the safety net, the installer(s) remain on the ground where the supports are erected. Dangerous climbing onto the still unsecured support structure is unnecessary.
  • a tool in particular a mounting pole, which may have a fork at one end, can be used to pivot the safety net. This eliminates the need for a ladder. Therefore, unlike other methods in the prior art, the safety net according to the invention can be put into working order before the first installer climbs onto the support structure.
  • the catch grid and the first and second cross braces are in a separate, in particular isolated, state.
  • the catch grid is moved downwards from the first cross brace, i.e., downwards, towards the substrate.
  • the receiving grid is arranged in an intermediate position with the surface facing the direction of the surface. It is preferably arranged at an angle to the horizontal of between 10 and 90 degrees.
  • the angle to the horizontal is preferably at least 20 degrees, more preferably at least 40 degrees, even more preferably at least 60 degrees, and most preferably substantially 90 degrees.
  • the pivoting of the catch grid includes in particular a pivoting upwards, whereby the angle to the horizontal mentioned above decreases continuously.
  • Connecting the second end section of the collection grid to the second cross brace is preferably achieved by placing the collection grid onto the upper surface of the second cross brace.
  • the first end section is connected to the first cross brace
  • the second end section is connected to the second cross brace.
  • the first end section of the collection grid rests on the first cross brace
  • the second end section rests on the second cross brace.
  • the catch grid is arranged in the safety position below the height of the upper edge of the first and second yoke beams.
  • the guides had to be attached to the yoke beams before the safety grille could be mounted.
  • the guides served only as a support for the grille and had to be specifically designed for the yoke beams in order to be mounted on them.
  • the fall arrestor according to the invention can be placed directly onto the cross braces. This requires no prior modifications to the cross braces or other parts of the support structure, nor any additional components.
  • the method according to the invention is therefore particularly easy to implement and flexible in its application.
  • the fall arrestor according to the invention can be combined with various designs of the support structure.
  • the fall arrest system according to the invention features cross braces, preferably crossbars. Therefore, it is particularly well-suited for retrofitting older support structures.
  • the fall arrest system according to the invention can be erected using a particularly simple method and requires no further components apart from the catch grid and the support structure. This offers economic advantages and is also advantageous in terms of logistics. Small parts cannot be forgotten or delivered incorrectly to the construction site, and the fall arrest system can also be assembled or retrofitted particularly quickly. While crossbeams were present in the prior art according to US 2019/0063086 Al, they did not contribute to the arrangement of the grid.
  • the method according to the invention comprises the following steps: a) Providing the support device, which
  • step b) comprises: 1) connecting a first end region of the catch grid to the first transverse stiffener, wherein the catch grid is arranged in an intermediate position directed downwards from the first transverse stiffener; b2) pivoting the catch grid about a distance from the first cross-stiffening pivot axis formed , b3 ) Connecting a second end region of the catch grid with the second cross-stiffening by placing the catch grid on the top of the second
  • the catching grid when the catching grid is pivoted, i. the first end region of the catching grid is moved away from the second cross-brace on the first cross-brace, ii. the second end region of the catching grid is raised beyond the second cross-brace, iii. the first end region of the catching grid is moved towards the second cross-brace on the first cross-brace, and iv. the second end region of the catching grid is lowered onto the second cross-brace.
  • the pivoting of the catch grid includes, in particular, a pivoting upwards, whereby steps i to iv can be performed sequentially and/or overlapping during the pivoting.
  • the pivoting movement can also be interrupted while one or more of steps i to iv are being performed.
  • steps i to iv can be performed with or without overlapping movements and with or without interrupting the pivoting, as long as the catch grid ultimately reaches the described locking position.
  • Step i can also be omitted if, when connecting the first end section of the catch grid to the first cross brace, the second end section of the catch grid already has a sufficient distance from the second cross brace to raise the second end section of the catch grid above the second cross brace.
  • the catching grid has at least one stop element, preferably at least one stop hook, to limit displacement of the catching grid in at least one direction.
  • the stop element preferably the stop hook, is preferably fixedly connected to the catch grid, preferably via a joining connection, for example a weld, and projects downwards in the catch grid's secured position.
  • the stop element thus limits the displacement of the catch grid in at least one direction.
  • two stop elements limit the displacement in two opposite directions, preferably parallel and antiparallel to the longitudinal direction. This prevents the catch grid from falling when a force is applied in the longitudinal direction. Such a force in the longitudinal direction can occur, for example, if people or objects fall into the catch grid from an oblique angle above.
  • the stop element provides a particularly simple way to secure the catch grid against falling.
  • the stop element can also serve to allow the catch grid to be hooked onto the first cross brace when connecting the first end section of the catch grid to the first cross brace. This significantly facilitates the pivoting of the collection grid around the first cross brace. Since the stop element is preferably fixed to the grid, it does not represent an additional small part. All components necessary for installation are already present on the collection grid itself. Preferably The fall arrest system consists of only a single part, namely the catch grid. Therefore, no additional small parts besides the catch grid need to be taken to the construction site. This design offers particular advantages with regard to construction site logistics. Preferably, no modifications or alterations to the support structure are necessary for the installation of the fall arrest system according to the invention, so the invention offers economic advantages.
  • the stop element limits the longitudinal displacement of the catching grid beyond one of the transverse stiffeners. Longitudinal displacement of the catching grid is then only possible until the stop element abuts the transverse stiffener.
  • the stop element is welded to the catching grid.
  • the stop element is a stop hook arranged at an end region of the catching grid.
  • the indentation of the stop hook is directed towards the grid surface.
  • the collection grid has at least four stop elements, preferably at least four stop hooks, i.e., at least two stop elements per end region.
  • the four stop elements are arranged at the four corners of the collection grid.
  • a first pair of stop elements, preferably stop hooks, spaced apart from each other in the transverse direction prevents the collection grid from being displaced longitudinally over the first transverse stiffener at the first end region.
  • a second pair of stop elements, preferably stop hooks, spaced apart from each other in the transverse direction prevents the grid from being displaced longitudinally over the second transverse stiffener at the second end region. The limitation of the longitudinal displacement of the collection grid is thus achieved.
  • the longitudinal distance between the first and second pair of stop elements is only slightly greater than the longitudinal distance between the first and second transverse stiffeners.
  • the longitudinal movement of the catching grid is limited to the length by which the longitudinal distance between the first and second pair of stop elements is greater than the longitudinal distance between the first and second transverse stiffeners. This length is preferably between 2 and 12 cm, more preferably between 4 and 10 cm, and even more preferably between 6 and 8 cm.
  • At least one of the stop elements, preferably at least one of the stop hooks, of the catch grid is hooked onto the first cross brace, preferably the first crossbar. This allows the catch grid to be pivoted upwards without the installer having to hold its entire weight during the pivoting process. A large portion of the catch grid's weight is supported by the first cross brace, preferably the first crossbar, during the pivoting action.
  • two stop elements preferably stop hooks, spaced apart from each other in the transverse direction, are hooked onto the first transverse stiffener, preferably the first crossbar, before the catch grid is pivoted. This allows for a particularly simple and ergonomic installation of the catch grid.
  • the collection grid has at least one grid element.
  • the grid element preferably has longitudinal and transverse elements arranged essentially perpendicular to each other in a horizontal plane. Two longitudinal and two transverse elements each define a grid opening.
  • the longitudinal and transverse elements can be individual metal bars welded together, or they can be formed by a wire mesh.
  • the collection grid has at least one longitudinal stiffening element on at least one of the opposite longitudinal sides, preferably on both opposite longitudinal sides, of the grid surface.
  • the at least one longitudinal stiffening element can, for example, be a shaped tube or a profile section. In the installed state, the longitudinal stiffening element supports the weight of the collection grid, stabilizes the collection grid, and maintains the collection grid in its operating shape.
  • the at least one grid element is arranged between the two longitudinal stiffening elements.
  • At least one stop element is connected to at least one longitudinal stiffening element.
  • two longitudinal stiffening elements and four stop elements are provided, wherein a stop element is arranged at each end of the longitudinal stiffening elements.
  • At least one longitudinal stiffening element projects beyond the grid surface in the longitudinal direction. This allows several catch grids to be placed one behind the other in the longitudinal direction without their grid surfaces overlapping. The installation and removal of the multiple catch grids can therefore take place in any sequence.
  • a gap may form between the grid elements of the two catch grids. However, this gap is preferably not so large that a person could fall through it.
  • the longitudinal extent of the gap is preferably a maximum of 15 cm. If a person falls into the catch grid, the gap can widen to up to 30 cm in the longitudinal direction, for example, due to plastic deformation of the catch grid.
  • the catching grid has at least one transverse stiffening element which bounds one of the opposite transverse sides of the grid surface.
  • the cross-stiffening element is preferably a shaped tube, but can also be a profile section or a double wire. Two cross-stiffening elements are particularly preferred; these are preferably shaped tubes and are arranged on the two opposite transverse sides of the grid element.
  • the grid surface is a rectangle bounded by the longitudinal stiffening elements and the transverse stiffening elements.
  • each column has a head section, with the transverse stiffeners being connected to the head sections of the columns.
  • each transverse stiffener is attached to the head sections of two columns spaced apart in the transverse direction, so that the transverse stiffener forms a tensile and compressive rigid connection between the two head sections of the two columns.
  • the yoke beams are preferably connected to the head sections of the columns and, even more preferably, rest on the head sections of the columns.
  • these supports are designed as U-shaped retaining clips which can be attached at any point to two yoke beams spaced apart in the transverse direction, so that the transverse stiffening forms a tensile and compressive rigid connection between the two yoke beams.
  • the collection grid has at least one grid element made of a dimensionally stable material, preferably metal.
  • dimensionally stable means in particular that the grid element does not deform significantly during intended use, especially as long as no falling load acts on the grid element, and in particular does not deform plastically.
  • the task is also accomplished through a process for manufacturing a Precast concrete slab according to claim 5 solved.
  • the method may comprise the following steps:
  • the problem is further solved by a method for constructing a slab formwork according to claim 6.
  • the method may comprise the following steps:
  • At least two crossbeams are placed transversely on the first and second yoke beams, and the formwork element is placed on at least two adjacent crossbeams.
  • a first end region of the catching grid is connected to the first transverse stiffener, preferably placed on the first transverse stiffener, and a second end region of the catching grid is connected to the second transverse stiffener, preferably placed on the second transverse stiffener.
  • the support device comprises the following parts: an arrangement of supports, a first and a second yoke beam which are connected to the arrangement of supports, a first and a second transverse stiffener, preferably a first and a second crossbar, which are arranged substantially perpendicular to the first and second yoke beams, wherein the first and the second transverse stiffener are arranged below the level of a top surface of the yoke beams and wherein the first and the second transverse stiffener are not provided as load-bearing parts of the support device for the concrete part to be produced, a catch grid for securing a gap between the first and the second yoke beams, wherein a first end region of the catch grid rests on the first transverse stiffener and a second end region of the catch grid rests on the second transverse stiffener.
  • the collection grid has at least one stop element, preferably at least one stop hook, to limit displacement of the collection grid in at least one direction.
  • the stop element can be designed as described above in connection with the method.
  • the displacement of the catch grid in at least one direction preferably comprises both a displacement, preferably horizontal, of the placed catch grid, and a displacement, preferably vertical or diagonal, of the catch grid during the setup of the safety device.
  • the displacement of the catch grid in at least one direction preferably also includes a downward displacement in the sense of falling down when the catch grid is swung upwards.
  • the collection grid has at least one longitudinal stiffening element on at least one of the opposite longitudinal sides, preferably on both opposite longitudinal sides, of the grid surface.
  • the collection grid can be designed as described above in connection with the method.
  • this includes at least one stop element with at least one Longitudinal stiffening element connected.
  • the longitudinal stiffening element projects beyond the grid surface in the longitudinal direction.
  • the catching grid has at least one transverse stiffening element which limits one of the opposite transverse sides of the grid surface.
  • the supports each have a head section, with the first and second transverse stiffeners being attached to the head sections of the supports.
  • first and second cross braces each have a bracket at their opposite ends for mounting on the first and second yoke beams.
  • the collection grid has at least one grid element made of a dimensionally stable material, preferably metal.
  • Fig. 1 shows a first variant of the support device according to the invention with catch protection.
  • Fig. 2 shows a detailed view of the first variant of the support device according to the invention with catch protection.
  • Fig. 3 shows a catching grid of the first variant of the support device according to the invention with catching safety device.
  • Fig. 4 shows a second variant of the support device according to the invention with a safety catch.
  • Fig. 5 shows a detailed view of the second variant of the support device according to the invention with catch safety device.
  • Fig. 6 shows a catch grid of the second variant of the support device according to the invention with catch protection.
  • Figures 7A to 7E show the process of setting up the support device with catch protection, wherein a first catch grid of the first variant is attached to the support device.
  • Figures 8A to 8E show the procedure for attaching a catch grid to a support device on which several catch grids are already installed. Variant.
  • Fig. 9 shows the first variant of the support device according to the invention with catch protection with a precast concrete element placed on top.
  • Fig. 10 shows the first variant of the support device according to the invention with catch protection with placed crossbeams and formwork elements.
  • Figures 1 to 3 show a first embodiment of the support device 1 according to the invention with a safety catch 2.
  • the support device 1 has several telescopic supports 3 arranged at regular intervals on a base 15. Each support 3 has a head 12.
  • a first yoke 4a is connected to several head 12s arranged in a line.
  • a second yoke 4b is connected, substantially parallel to the first yoke 4a, to several head 12s arranged in a line.
  • the first yoke 4a and the second yoke 4b are preferably designed as I-beams, preferably made substantially of wood.
  • Opposite ends of a first cross-bracing in the example shown a first crossbar 5a, are reversibly and detachably attached, preferably suspended, to a first head section 12a and a second head section 12b, so that the first cross-bracing, here the first crossbar 5a, forms a tensile and compressive rigid connection between the first yoke beam 4a and the second yoke beam 4b.
  • a second cross brace Opposite ends of a second cross brace, in the example shown a second crossbar 5b, are reversibly and detachably attached, preferably suspended, to a third head section 12c and a fourth head section 12d, so that the second cross brace, here the second crossbar 5b, forms a tensile and compressive rigid connection between the first yoke beam 4a and the second yoke beam 4b.
  • a catch 2 which has a catch grid 6, is placed on the first crossbar 5a and on the second crossbar 5b, so that the catch 2 covers a gap 14 extending between the first yoke beam 4a and the second yoke beam 4b.
  • the catch grid 6 in the first variant has a first end region 7a, a second end region 7b, and a plurality of grid elements 13, which are formed by a plurality of longitudinal elements 13a and transverse elements 13b. Together, the longitudinal elements 13a and the transverse elements 13b form a grid surface 9.
  • the grid surface 9 is bounded longitudinally by two longitudinal stiffening elements 10 and transversely by two transverse stiffening elements 11. In the example shown, both the longitudinal stiffening elements 10 and the transverse stiffening elements 11 are designed as shaped tubes.
  • a stop hook 8 is arranged in the example shown. The indentation 16 of each stop hook 8 is oriented towards the grid surface 9.
  • the longitudinal stiffening elements 10 project longitudinally beyond the grid surface 9. This prevents, as can be seen in Fig. 1 and Fig. 2, an overlap of the grid surfaces 9 of two longitudinally adjacent catch grids 6. An exception is formed by the first catch grids 6a, which directly adjoin a transversely running wall 18. Here, an overlap 17 occurs with the longitudinally adjacent second catch grids 6b.
  • the first crossbar 5a rests on the catch grid 6, and the second end section 7b of the catch grid 6 rests on the second crossbar 5b.
  • the catch grid 6 is only supported by the crossbars 5a and 5b and not by any other supports. Fasteners are attached to these.
  • the stop hooks 8 limit the longitudinal movement of the placed catch grid 6. In the transverse direction, the movement of the catch grid 6 is limited by the yoke beams 4a and 4b.
  • Figures 4 to 6 show a second variant of the support device 1 with catch 2 according to the invention.
  • the construction of the support device 1 with catch 2 corresponds to that of the first variant.
  • the receiving grid 6 in the second variant has a first end region 7a, a second end region 7b, and a plurality of grid elements 13, which are formed by a plurality of longitudinal elements 13a and transverse elements 13b and together form the grid surface 9.
  • the grid surface 9 is bounded by two longitudinal stiffening elements 10 and two transverse stiffening elements 11.
  • the longitudinal stiffening elements 10 are designed as tubular sections, the transverse stiffening elements 11 as double wire.
  • a stop hook 8 is arranged at each of the two ends of each longitudinal stiffening element 10.
  • the indentation 16 of each stop hook 8 faces the grid surface 9.
  • the grid surface 9 extends to the end of the longitudinal stiffening elements 10. As can be seen in Fig. 4 and Fig. 5, this results in an overlap 17 of the grid surfaces 9 of two longitudinally adjacent
  • catch grids 6 On catch grids 6.
  • the first end section 7a of the catch grid 6 rests on the first crossbar 5a and the second end section 7b of the catch grid 6 rests on the second crossbar 5b.
  • the catch grid 6 is only placed on the crossbars 5a and 5b and is not otherwise attached to them.
  • the stop hooks 8 limit the longitudinal movement of the catch grid 6. In the transverse direction, the movement of the catch grid 6 is limited by the yoke beams 4a and 4b.
  • FIGs 7A to 7E illustrate the installation of a catch grid 6 at an end of the support device 1 adjacent to a wall 18.
  • the catch grid 6 is suspended from the first crossbar 5a by two stop hooks 8, which are attached to a first end region 7a of the catch grid 6, so that the catch grid 6 hangs down essentially vertically (Fig. 7B).
  • the catch grid 6 is pivoted upwards by means of a forked mounting rod 19, with the first crossbar 5a serving as the pivot axis.
  • the second end section 7b of the catch grid 6 approaches the second crossbar 5b (Fig. 7C).
  • the catch grid 6 is moved longitudinally on the first crossbar 5a using the forked mounting rod 19, so that the second end section 7b moves away from the second crossbar 5b (Fig. 7D).
  • the second end section 7b of the catch grid 6 is raised above the height of the second crossbar 5b using the forked mounting rod 19 and placed onto the second crossbar 5b (Fig. 7E).
  • FIGs 7A to 7E and 8A to 8E show the first variant of the support device according to the invention with catch protection, as shown in Figures 1 to 3, in which the catch grids 6 can be installed in any order.
  • the second variant of the support device according to the invention with catch protection as shown in Figures 1 to 3, in which the catch grids 6 can be installed in any order.
  • the components on the catch grid 6 are not installed in any arbitrary order, but the installation must begin at one end of the support device 1 and continue in the longitudinal direction.
  • the support device 1 serves as a support for one or more precast concrete elements 20, as shown in Fig. 9, the Precast concrete elements 20 placed directly onto the yoke beams 4a, 4b.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
  • Bridges Or Land Bridges (AREA)

Abstract

L'invention concerne un procédé de construction d'un dispositif antichute (2) sur un dispositif de support (1) pour un élément de coffrage (22) ou une pièce en béton préfabriquée (20), le procédé comprenant les étapes consistant à : a) fournir le dispositif de support (1), qui comporte - un agencement de montants (3), - une première et une seconde poutre primaire (4a, 4b) qui sont reliées à l'agencement de montants (3), - un premier et un second renfort transversaux, de préférence une première et une seconde tige transversales (5a, 5b), destinées à former une liaison résistante à la tension et résistante à la compression entre la première et la seconde poutre primaire (4a, 4b), b) fournir une grille antichute (6) destinée à protéger un espace intermédiaire (14) entre la première et la seconde poutre primaire (4a, 4b), caractérisé en ce que la fourniture de la grille antichute (6) (étape b)) consiste à : b1) relier une première région d'extrémité (7a) de la grille antichute (6) au premier renfort transversal (5a), la grille antichute (6) étant disposée dans une position intermédiaire dirigée vers le bas à partir du premier renfort transversal (5a) ; b2) faire pivoter la grille antichute (6) autour d'un axe de pivotement formé par le premier renfort transversal (5a) ; b3) relier une seconde région d'extrémité (7b) de la grille antichute (6) au second renfort transversal (5b) de sorte que la grille antichute (6) est disposée dans une position de protection dans laquelle elle protège l'espace intermédiaire (14) entre la première et la seconde poutre primaire (4a, 4b).
PCT/EP2025/067764 2024-06-24 2025-06-24 Procédé de construction d'un dispositif antichute Pending WO2026003003A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP24184059.4 2024-06-24
EP24184059.4A EP4671465A1 (fr) 2024-06-24 2024-06-24 Procédé de construction d'un dispositif de sécurité antichute et dispositif avec grille antichute

Publications (1)

Publication Number Publication Date
WO2026003003A1 true WO2026003003A1 (fr) 2026-01-02

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EP (1) EP4671465A1 (fr)
WO (1) WO2026003003A1 (fr)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1375781B1 (fr) * 2001-04-03 2009-04-01 ULMA C y E, S. COOP. Systeme de coffrage de dalles
WO2010108997A1 (fr) * 2009-03-27 2010-09-30 Faresin Building Division S.P.A. Coffrage pour la fabrication de dalles de plancher et analogue
EP2749713B1 (fr) * 2012-12-28 2015-12-09 Faresin Building Division S.p.A. Structure de coffrage pour l'exécution de pièces coulées horizontales dans la fourniture de dalles de plancher
EP2798133B1 (fr) * 2011-12-29 2016-03-23 Friedr. Ischebeck GmbH Panneau pour un système de coffrage de plafond et système de coffrage de plafond
EP3231961A1 (fr) * 2016-04-12 2017-10-18 ULMA C y E, S. COOP. Système de coffrage horizontal et procédé de sécurité permettant d'installer des panneaux de coffrage dans ledit système
WO2019069246A1 (fr) 2017-10-04 2019-04-11 Zaugg Construction GmbH Système de securité hammock
EP3719236B1 (fr) 2019-04-03 2022-05-18 DOKA GmbH Support de coffrage, dispositif support et coffrage de plafond
WO2022184296A1 (fr) * 2021-03-02 2022-09-09 Peri Se Dispositif de raccordement, système de coffrage de plafond pourvu d'un dispositif de raccordement et utilisation d'un dispositif de raccordement
WO2024083893A1 (fr) 2022-10-18 2024-04-25 Doka Gmbh Dispositif de sécurité pour coffrage de plafond

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1375781B1 (fr) * 2001-04-03 2009-04-01 ULMA C y E, S. COOP. Systeme de coffrage de dalles
WO2010108997A1 (fr) * 2009-03-27 2010-09-30 Faresin Building Division S.P.A. Coffrage pour la fabrication de dalles de plancher et analogue
EP2798133B1 (fr) * 2011-12-29 2016-03-23 Friedr. Ischebeck GmbH Panneau pour un système de coffrage de plafond et système de coffrage de plafond
EP2749713B1 (fr) * 2012-12-28 2015-12-09 Faresin Building Division S.p.A. Structure de coffrage pour l'exécution de pièces coulées horizontales dans la fourniture de dalles de plancher
EP3231961A1 (fr) * 2016-04-12 2017-10-18 ULMA C y E, S. COOP. Système de coffrage horizontal et procédé de sécurité permettant d'installer des panneaux de coffrage dans ledit système
US20190063086A1 (en) 2016-04-12 2019-02-28 Ulma C Y E, S. Coop. Horizontal Formwork System and Safety Method for Installing Formwork Panels in a Horizontal Formwork System
WO2019069246A1 (fr) 2017-10-04 2019-04-11 Zaugg Construction GmbH Système de securité hammock
EP3719236B1 (fr) 2019-04-03 2022-05-18 DOKA GmbH Support de coffrage, dispositif support et coffrage de plafond
WO2022184296A1 (fr) * 2021-03-02 2022-09-09 Peri Se Dispositif de raccordement, système de coffrage de plafond pourvu d'un dispositif de raccordement et utilisation d'un dispositif de raccordement
WO2024083893A1 (fr) 2022-10-18 2024-04-25 Doka Gmbh Dispositif de sécurité pour coffrage de plafond

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