EP0346524B1 - Dispositif de retenue pour parties enfilées d'échafaudage - Google Patents

Dispositif de retenue pour parties enfilées d'échafaudage Download PDF

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Publication number
EP0346524B1
EP0346524B1 EP88118224A EP88118224A EP0346524B1 EP 0346524 B1 EP0346524 B1 EP 0346524B1 EP 88118224 A EP88118224 A EP 88118224A EP 88118224 A EP88118224 A EP 88118224A EP 0346524 B1 EP0346524 B1 EP 0346524B1
Authority
EP
European Patent Office
Prior art keywords
spring element
scaffolding
holding means
members
tubular
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.)
Expired - Lifetime
Application number
EP88118224A
Other languages
German (de)
English (en)
Other versions
EP0346524A2 (fr
EP0346524A3 (en
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.)
STREIF SCHALUNGSBAU GmbH
Original Assignee
STREIF SCHALUNGSBAU 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 STREIF SCHALUNGSBAU GmbH filed Critical STREIF SCHALUNGSBAU GmbH
Priority to AT88118224T priority Critical patent/ATE94250T1/de
Publication of EP0346524A2 publication Critical patent/EP0346524A2/fr
Publication of EP0346524A3 publication Critical patent/EP0346524A3/de
Application granted granted Critical
Publication of EP0346524B1 publication Critical patent/EP0346524B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • E04G25/00—Shores or struts; Chocks
    • 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
    • E04G1/00—Scaffolds primarily resting on the ground
    • E04G1/24—Scaffolds primarily resting on the ground comprising essentially special base constructions; comprising essentially special ground-engaging parts, e.g. inclined struts, wheels
    • 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
    • E04G25/00—Shores or struts; Chocks
    • E04G25/04—Shores or struts; Chocks telescopic
    • E04G25/06—Shores or struts; Chocks telescopic with parts held together by positive means
    • E04G25/065—Shores or struts; Chocks telescopic with parts held together by positive means by a threaded nut
    • 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
    • E04G5/00—Component parts or accessories for scaffolds
    • E04G5/02—Scaffold feet, e.g. with arrangements for adjustment

Definitions

  • the invention relates to a holder of tubular scaffolding parts, supports and the like. End plates, spindles, butt connectors and the like. With a device that can be put under tension by moving the plug-in parts in the longitudinal direction, with features as they are named in the characterizing part of the main claim.
  • scaffolding requires a stepless level control device.
  • threaded spindles with nut-shaped union are used, which are fixed or detachably connected to the base plate.
  • the tubular stems are slipped onto the spindle and adjusted to the required height by actuating the union.
  • the connection between the foot spindle and the column cross section consists of a loose plug connection.
  • the spindles are up to 1.5 m long. Securing the foot spindles is an essential condition for reasons of accident prevention, but also to maintain unity.
  • the known measures for securing often consist in the fact that at the end of the support near the spindle, a spring element in the form of a snapper or a claw which engages through the wall of the support and engages in the spindle.
  • a spring element in the form of a snapper or a claw which engages through the wall of the support and engages in the spindle.
  • Such devices do not prove to be long-lasting and are very susceptible to faults. They also often experience deformations during use, which means that they are no longer functional.
  • the tough conditions of construction site operation require devices that ensure permanent securing of the plug-in parts against falling out when moving a scaffolding unit that is the same in use.
  • FR-A-2 277 208 discloses a telescopic, height-adjustable tubular base, the tubular parts of which are connected to a spiral spring.
  • the spring is not installed there in order to secure the telescopic tubes against falling out. This would be done by the cross bolt and the roller shaft.
  • the task of the spring is solely to be able to continuously regulate the telescopic tube base in connection with the adjusting nut.
  • the spring in the French application solves only one task, namely the pulling in of the inner tube when adjusting the tube foot extension.
  • a safety device for a trench discharge is placed under protection in order to prevent the sprout from falling out when the load is released.
  • a tensionable, elastic element on the other support part is placed under an axially directed compressive prestress.
  • the actual purpose of this device is, in the event that a relief occurs by giving in the support points, the support is still held under a prestress and does not fall out of its position.
  • the two longitudinally adjustable parts of the support can be reset under tension to the extent that Clamping element is compressed elastically.
  • the tensioning element is arranged on that part of the support into which the other support part is inserted.
  • the tensioning element does not, however, represent a holder of the two plugged-together support parts against unintentional detachment from one another.
  • the holder of the adjusting device is taken over by the plug pin, which, however, has no stepless adjustment, as is required according to the category of the subject matter of the invention.
  • the object of the invention is to provide a holder for longitudinally preferably continuously adjustable, one-part or multi-part plug-in parts in the tubular stem of scaffolding, formwork supports or the like, integrating all individual elements regardless of the position of the inserts relative to the stem, support or the like holds together, is maintenance-free, is able to withstand the rough operation on a construction site and allows stepless adjustment in wide areas, possibly up to a maximum of 1.5 m even under load, and eliminates the disadvantages of known fuses.
  • a solution for such a holder is a spring element that can be tensioned in the longitudinal direction in the form of a rubber cord bundle that holds the support or a support part of axially directed pretension, with the features specified in the characterizing part of the main claim.
  • Special embodiments of the spring element and its anchoring are specified in the subclaims.
  • the spring element 5 connects the footplate with hollow spindle 1, 2 and union 3 with the tubular frame stem 4 and the butt connector 6.
  • the spring element 5 of the tensionable holder is formed according to the dependent claim 3 as a woven rubber cord bundle, which is arranged in the cross-sectional axis of the frame stem 4. It is end-anchored in the spindle 2 near the base plate, as well as in the butt connector 6 with a bolt 12 which extends through the eye-shaped end of the spring element. It is therefore completely protected against dirt and damage along its entire length.
  • the spring element 5 is designed such that it braces the stem of the scaffold frame together with the butt connector 6 with the foot spindle 1, 2.
  • the base plate 1 is firmly connected to the hollow spindle 2 and can raise or lower the frame handle 4 under tension when the cap 3 is rotated. This is also possible if the frame arm 4 is installed in a scaffold unit.
  • the scaffold is first lowered by actuating the union 3. No further work is required.
  • the base plate 1 is held together with the spindle 2 and the union 3 by the spring element 5 on the scaffold arm 4.
  • all the plug-in parts 1, 2, 3, 6 are held by the design of the spring element 5 according to the invention in such a way that with the re-fitting, the setting up and the height adjustment can be carried out by means of the spindle.
  • the spring element 5 is end anchored at the end of the spindle 2, which engages in the scaffold post. This can be seen in FIG. 2.
  • the spring element 5 is shown as an example, how it detects a base plate 1 via a bolt 12 at the front end of the centering dowel and axially guided into the tubular threaded spindle 2, connects to the stem 4 of a frame or a support.
  • a fully effective, mechanical protection of the spring element 5 is ensured, since it is arranged axially in the inaccessible part of the hollow spindle and the tubular stem 4.
  • the spring element 5 with eye-shaped ends is held on the footplate and at the stem end in that a cross bolt 12 reaches through the eye and anchored it.
  • the eye-shaped end of the rubber cord bundle is formed by bending 180 ° around a thimble 13 and closing with a clamping sleeve 10.
  • other known closing means such as rope clamps or the like, can also be used. If the bolt 12 is designed as a screw bolt, the end anchorage can be released, so that, if necessary, the spring element can also be replaced if the circumstances so require.
  • Fig. 3 shows a two-part heavy load support
  • the support foot part 8 is designed as a hollow spindle with a base plate 1.
  • the spindle is firmly connected to the base plate 1 and is connected to the upper support part 9 in an interlocking and overlapping manner by the union 3.
  • the entire support is held together by the spring element 5.
  • the section through the head plate reveals a releasable conical end anchor 7, in which the spring element 5 also consists of a fabric-spun rubber cord bundle. It is end-anchored in a sleeve-shaped metal piece 11 by constricting the sleeve.
  • the sleeve 11 has an internal thread, which is protected from contamination by a threaded plug. If necessary, the end anchorage can be raised by means of a screw in order to clamp a suitable intermediate component or to create a provisional bracket for other components.
  • the shape of the end anchorage 7 shown is only one of many possibilities and is a substitute for other designs.
  • a cylindrical sleeve 14 with an external thread is used as a further example of the end anchorage of a fabric-wound rubber cord bundle. It is screwed into the base plate 1 or the like or held by a screw connection let into the base plate 1.
  • this can be a significant advantage of the subject matter of the invention, especially when the end anchor is designed in this way on the column head.
  • bandages can be temporarily clamped or attachments held in place, which in the final state are connected by other fasteners.
  • the design of the end anchorage 7 is adapted to the type of the spring element 5.
  • a plug or screw connection or one of the usual attachments is provided for anchoring the spring element in the form of a spiral spring for holding the scaffolding parts.
  • the subject of the invention represents an advantageous solution of a holder of multi-part hollow support cross sections, which, once combined to form a unit, considerably simplify implementation and reinstallation. All parts assembled in this unit of use can be safely transported lying down or standing up. The individual parts remain clamped to one another without adversely affecting the adjustability.
  • the expenditure for the manufacture and installation of the holder are relatively low and are in no proportion to the time that the disadvantageous, known holders have.
  • the subject of the invention fulfills in a simple manner the multiple requirements that are placed on these assembled units made of plug-in parts and support posts.
  • the subject of the invention can also be retrofitted to existing facilities in use and can be produced in series in certain standard lengths, not only for scaffolding and pipe supports, but also for flying structures.
  • the spring constant of the spring elements depends on the one hand on the weight of the inserted parts and on the other hand on the adjustment range. By parallel guiding several spring elements with a small spring constant, the spring constant can be increased, which means that the retrofit units can be adapted to any situation according to the modular principle.
  • the preload must be selected so that there is no gap between the parts under the weight of the insert parts.

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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)

Claims (7)

  1. Unité d'échafaudage ou de coffrage se composant :
    - d'éléments d'échafaudage tubulaires tels que des écoperches, des étais à crémaillère et analogues,
    - d'éléments d'échafaudage enfichables tels que des plaques d'extrémité, des broches, des joints droits ou analogues,
    - et d'un élément de ressort (5) pouvant être mis sous tension en déplaçant les éléments enfichables dans la direction longitudinale, sachant que
    - l'élément de ressort (5) relie entre eux les points d'extrémité d'une unité d'échafaudage ou de coffrage d'utilisation toujours constante composée de plusieurs éléments,
    - l'élément de ressort (5) est disposé dans la cavité des éléments d'échafaudage tubulaires et est protégé, si besoin est, de la détérioration et de l'encrassement par la cavité existant dans les éléments d'échafaudage (2, 6, 8) enfichables,
    caractérisé en ce que
    - l'élément de ressort (5) se compose d'un membre de traction précontraint sous la forme d'un brin de fils de caoutchouc et constitue simultanément la fixation des éléments d'échafaudage (1, 2, 4, 6) tubulaires et enfichables,
    - la force de l'élément de ressort (5), lorsque celui-ci est le plus près des attaches d'extrémité (7), est supérieure au poids des éléments d'échafaudage (1, 2, 4, 6) tubulaires et enfichables,
    - la fixation n'empêche pas un réglage continu des éléments d'échafaudage tubulaires et enfichables, même en charge, et permet des déplacements isolés allant jusqu'à 1,5 m,
    - la liaison des éléments dans les attaches d'extrémité (7) est, le cas échéant, amovible et/ou ajustable.
  2. Élément de ressort selon la revendication 1, caractérisé en ce que l'élément de ressort (5) se compose d'un brin de fils de caoutchouc recouvert de tissu.
  3. Fixation selon l'une des revendications 1 ou 2, caractérisée en ce que l'élément de ressort (5) se compose de plusieurs brins de fils de caoutchouc guidés parallèlement pour augmenter la constante de rappel.
  4. Fixation selon la revendication 3, caractérisée en ce que l'attache d'extrémité (7) du brin de fils de caoutchouc se compose d'une douille (11) dont la paroi s'élargit vers l'extrémité extérieure, comporte, ou non, un filet de vis intérieur et dont l'extrémité intérieure présente un rétrécissement de la section transversale provoqué par écrasement.
  5. Fixation selon la revendication 4, caractérisée en ce que l'attache d'extrémité (7) se compose d'une attache d'extrémité cylindrique (14) munie d'un filet extérieur et est vissée ou fixée au moyen d'écrous dans la plaque d'assise ou analogue.
  6. Fixation selon l'une des revendications 1 à 5, caractérisée en ce que l'attache d'extrémité (7) est réalisée de manière à pouvoir être déplacée longitudinalement.
  7. Fixation selon la revendication 3, caractérisée en ce que les extrémités du brin de fils de caoutchouc recouvert de tissu qui se chevauchent parallèlement sont maintenues par des colliers de serrage.
EP88118224A 1988-06-13 1988-11-02 Dispositif de retenue pour parties enfilées d'échafaudage Expired - Lifetime EP0346524B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88118224T ATE94250T1 (de) 1988-06-13 1988-11-02 Halterung von geruesteinsteckteilen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP88109354 1988-06-13
EP88109354 1988-06-13

Publications (3)

Publication Number Publication Date
EP0346524A2 EP0346524A2 (fr) 1989-12-20
EP0346524A3 EP0346524A3 (en) 1990-06-13
EP0346524B1 true EP0346524B1 (fr) 1993-09-08

Family

ID=8199052

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88118224A Expired - Lifetime EP0346524B1 (fr) 1988-06-13 1988-11-02 Dispositif de retenue pour parties enfilées d'échafaudage

Country Status (2)

Country Link
EP (1) EP0346524B1 (fr)
DE (1) DE3883972D1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2295139A (en) * 1994-11-17 1996-05-22 Paul Eisinger Jack for replacement bay windows
GB0602107D0 (en) * 2006-02-02 2006-03-15 Harrison David J E Portable foundation
CN103015697B (zh) * 2013-01-05 2016-01-20 云南建工集团有限公司 一种碗扣式钢管脚手架扫地杆套管的施工装置
CN105178626B (zh) * 2015-09-16 2017-12-08 中建钢构有限公司 轻型多功能支承装置的顶紧力计算方法
CN112627493A (zh) * 2020-12-21 2021-04-09 上海宝冶集团有限公司 脚手架底托快速调节装置及方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2277208A1 (fr) * 1974-07-01 1976-01-30 Retiere Paul Pietement tubulaire special pour table roulante de chantier

Also Published As

Publication number Publication date
EP0346524A2 (fr) 1989-12-20
EP0346524A3 (en) 1990-06-13
DE3883972D1 (de) 1993-10-14

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