EP0612899B1 - Gerüstboden und Montageverfahren für Gerüste mit diesem Boden - Google Patents

Gerüstboden und Montageverfahren für Gerüste mit diesem Boden Download PDF

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Publication number
EP0612899B1
EP0612899B1 EP94420066A EP94420066A EP0612899B1 EP 0612899 B1 EP0612899 B1 EP 0612899B1 EP 94420066 A EP94420066 A EP 94420066A EP 94420066 A EP94420066 A EP 94420066A EP 0612899 B1 EP0612899 B1 EP 0612899B1
Authority
EP
European Patent Office
Prior art keywords
platform
hooks
scaffold
scaffolding
pivoting
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
EP94420066A
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English (en)
French (fr)
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EP0612899A1 (de
Inventor
Claude Tonnard
André Peronnier
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.)
CONSTRUCTION DE MATERIEL POUR LE BATIMENT ET L'INDUSTRIE COMABI
Original Assignee
CONSTRUCTION DE MATERIEL POUR LE BATIMENT ET L'INDUSTRIE COMABI
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Publication date
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Publication of EP0612899A1 publication Critical patent/EP0612899A1/de
Application granted granted Critical
Publication of EP0612899B1 publication Critical patent/EP0612899B1/de
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Expired - Lifetime legal-status Critical Current

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    • 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
    • E04G1/18—Scaffolds primarily resting on the ground adjustable in height
    • E04G1/20—Scaffolds comprising upright members and provision for supporting cross-members or platforms at different positions therealong
    • 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
    • E04G2001/248—Inclined struts

Definitions

  • the present invention relates to a scaffolding plate, more particularly a rolling scaffolding plate, the scaffolding plate of generally rectangular shape comprising at its opposite ends means for hooking to horizontal bars belonging to vertical scales, making them - same part of the vertical structure of a scaffolding, the hooking means comprising in total four hooks mounted pivoting, at the ends of the plate, around axes which, in the mounted position of the plate are substantially horizontal and which extend parallel to the rungs of the ladders, the hooks normally projecting at the ends of the tray but being erasable by pivoting in the space requirement of the tray, in particular when the ladder rungs pass, these pivoting hooks having in their upper part a ramp configuration allowing them to automatically erase when passing a bar, then re position automatically above this bar, during a lifting movement of the plate.
  • the invention also relates to a scaffolding mounting system using this scaffolding plate. This invention relates, more particularly, to the field of rolling scaffolding.
  • a rolling scaffold in steel or aluminum, generally comprises a vertical structure equipped with work or access platforms.
  • the vertical structure is fixed on a mobile base structure, provided with wheels.
  • a procedure commonly used consists in using two ropes which are attached to each end of the plates, then placing this plate outside the vertical structure, parallel to the long side of the rectangle formed by the horizontal section of this vertical structure. After climbing to the ends of the ladders, two operators can, using the ropes, hoist the platform on the outside of the vertical structure to the desired level.
  • the tray is temporarily held at this level by the cords fixed to the structure, then in a more or less awkward manner, the tray is manually slid by the operators inside the structure to be hung in position there; finally, railings are put in place on the longitudinal sides of the tray.
  • a second difficulty lies in adjusting the level of the tray. Indeed, for height positioning needs to work in the ceiling, it is often necessary to vertically move the tray of a bar or two. This operation requires two people, because it is necessary to lift the plate to release its hooks from the bars, tilt the plate so that the hooks escape these bars during the vertical adjustment movement, and reposition it horizontally often by engaging the plate between bars. This operation is not only dangerous but also difficult to perform, because the operators must stand outside the ladders, while holding the tray inside the vertical structure.
  • a third difficulty lies in the installation of scales and diagonals. These, according to a known operating mode, are hoisted to the top of the structure using ropes or manually, the ladder nesting operation being possible only if the operator releases his body outside of the structure, while being attached to the structure with its legs. It is a dangerous operation.
  • Another method consists in placing the trays approximately every two meters and in constructing the scaffolding from said trays. This operation remains long and requires a large number of trays, which is not always advantageous, especially for great heights where you only need the last tray to work.
  • scaffolding plates have already been proposed provided, at their ends, with hooks mounted pivoting about substantially horizontal axes, which in the assembled position of the plate s' extend parallel to the bars of the ladders, so that the hooks can be erased by pivoting in the space requirement of the tray.
  • These pivoting hooks have in their upper part a ramp configuration allowing them to automatically disappear when a bar passes, then to automatically reposition themselves above this bar, during a lifting movement of the plate.
  • the hooks totaling eight constitute a complex device, and these hooks are only safety hooks intended to act in the event of breakage of the cable. lifting used to move the plate. Again, the actuation of the hooks must be done manually, by an operator located on site.
  • the devices of the documents discussed above retain the disadvantage of requiring personnel interventions, at height and often in dangerous positions.
  • the present invention aims to avoid these drawbacks by providing a scaffolding platform with pivoting hooks which can be maneuvered more simply, more quickly and more safely by the personnel, in particular from the ground or from this platform itself, which allows to consider a complete mechanized system of scaffolding assembly.
  • said pivoting hooks situated outside the longitudinal sides of the frame of the plate, respectively near its four angles, comprise, towards the two ends, respectively inner and outer, of their upper part, mooring points for a rope or a traction cable used for hoisting or lowering this platform inside the vertical structure of the scaffolding, the mooring point used tends to align with the vertical of the pivot axes when the rope or pull cable is stretched.
  • the scaffolding plate according to the invention offers the advantage of being able to be hoisted or lowered, inside the vertical structure of the scaffolding, by means of ropes or traction cables linked to the pivoting hooks in judiciously chosen mooring points.
  • the hooks not only ensure the connection between the scaffolding plate and a ladder bar, when this plate is brought to the level desired, but still these hooks are an integral part of the traction chain, allowing the platform to be raised to a higher level or lowered.
  • the action on the hooks via cables or ropes can be exerted, alternately, at one end of the platform and at its other end (the platform taking intermediate inclined positions), so that only one operator can climb or descend the platform, in particular by operating at a distance from the ground, in complete safety.
  • the invention is therefore essentially based on the inventive idea of connecting the cables or traction cords to the plate by means of the pivoting hooks, which is by no means the case in the state of the art as illustrated by the aforementioned document FR-A-2261387.
  • the hooks being arranged at the four angles of the scaffolding plate, this plate is hung in a stable manner, and resistant to loads, on the vertical scales of the structure of the scaffolding.
  • the two pivoting hooks located on either side of the scaffolding plate, at the same end of said plate are connected to each other by a cross member, ensuring synchronization of their movements.
  • the present invention also provides a scaffolding mounting system, in particular a rolling scaffolding, using the swivel hook plate previously defined, this mounting system comprising at least two ropes or traction cables whose ends are attached to the points of mooring provided on the upper parts of said hooks, and which pass over respective return pulleys, of substantially horizontal axis, positioned towards the top of the scales of the vertical structure of the scaffolding.
  • the two traction cords associated respectively with the two ends of the plate scaffolding each have, in addition to their strand extending between the pivoting hooks and the corresponding return pulley, another strand extending from the corresponding return pulley to the ground.
  • the traction on the two ropes can be exerted from the ground, or quite safely, by two operators, this to hoist a tray to the chosen level, the hooks of the tray automatically disappearing with each passage of a bar according the principle set out above.
  • This simple and inexpensive embodiment allows the rapid assembly, adjustment and disassembly of the scaffolding platform (s).
  • the two traction cables associated respectively with the two ends of the scaffolding plate each have, in addition to their strand extending between the pivoting hooks and the corresponding return pulley, another strand extending from the corresponding return pulley to a winch carried by the scaffolding plate itself.
  • the hoisting of the platform is thus achievable by operators posted on this platform, who actuate or control the winches so as to wind the cables and thus cause the elevation of the platform, whose pivoting hooks are erased as before the passage of the bars .
  • a rolling scaffolding comprises a movable base structure 1, provided with wheels 2, which is surmounted by a vertical structure or "tower” of rectangular horizontal section.
  • the vertical structure is made up of two opposite ladders 3, connected to each other by cross bars or diagonals 4.
  • These scales 3 allow the positioning and the height adjustment of at least one work or access platform 7, the structure and mounting method of which are more particularly the object of the present invention.
  • the scaffolding plate 7, of generally rectangular shape, has a metal frame 8 into which is inserted a horizontal plywood panel 9, forming a floor capable of supporting people and equipment.
  • the plate 7 is equipped with two hooks 10, located outside the longitudinal sides of its frame 8, on either side of the plate; the plate 7 thus comprises, in total, four hooks 10 located respectively near its four angles.
  • Each hook 10 has a general "T" shape, with an elongated arm 11 and an enlarged upper part 12.
  • each hook 10 is pivotally mounted about a horizontal axis 13, linked to the frame 8 of the plate 7 and parallel to the short sides of this frame.
  • Points 15 'and 15' 'mooring, for a rope or a traction cable are provided towards the two ends, respectively inner and outer, of the upper part 12 of each pivoting hook 10.
  • the scaffolding plate 7 can be moved, in the direction of its hoisting or its descent, at the by means of two traction cords 16 and 17, which pass over respective return pulleys 18 and 19 with a horizontal axis mounted, respectively, at the top of the two opposite scales 3 as shown in FIG. 1, and as also shown, more schematically, Figures 2 to 5.
  • Each rope 16 or 17 has a first strand, which is subdivided into two end parts 20 intended to be moored respectively at points 15 'and 15''of the two hooks 10 at the same end of the plate 7.
  • the other strand of each rope 16 or 17 extends from the corresponding return pulley 18 or 19 to the ground, and can thus be actuated by an operator posted on the ground.
  • each hook 10 comes into contact at a given moment, by its edge 14 forming a ramp, with a bar 6.
  • the cooperation of the bar 6 and the ramp 14 repels the hook 10 inward, this hook pivoting about its axis 13 as shown in FIG. 4.
  • the hook 10 automatically returns to position in the space between two consecutive bars 6 (return to the position of Figure 3).
  • the two pivoting hooks 10 located at the same end of the scaffolding plate 7 are connected to each other by a cross member 21, joining by example the respective upper parts 12 of the two hooks 10 passing over the frame 8 of the plate 7 (see Figure 2).
  • the hoisting, lowering and adjustment operations, described above and illustrated in the drawing for a single scaffolding plate 7, can be repeated for one or more other plates of identical structure, brought to other levels.
  • the scaffolding plate 7, produced as described above with four pivoting hooks 10, allows the mechanized mounting of this plate 7 itself, ladders 3 and diagonals 4.
  • the plate 7 is initially equipped with its longitudinal railings 22, and on this plate 7 are fixed two winches 23 and 24, positioned respectively towards its two ends.
  • the two winches 23 and 24 are here manual winches, each provided with a crank and which can thus be actuated by operators standing on the floor 9 of the plate 7.
  • On this plate 7 are also stored ladder elements 3 and diagonals 4, the mounting of which remains to be carried out.
  • the plate 7 is locked on two corresponding bars 6 by its four hooks 10. After having relaxed the cables 16 and 17, the operators can remove the cross members 25 and 26 supporting the respective pulleys 18 and 19.
  • the two crosspieces 25 and 26 are put back in place at the respective vertices of the new scale elements 3 'and 3' ', and as illustrated in FIG. 9 the operators can then perform a new sequence identical to that previously described, namely : elevation of the platform 7 using the winches 23 and 24, locking of the platform 7 on the tops of the new ladder elements 3 'and 3' ', and disassembly of the crosspieces 25 and 26, and so on ...
  • the scaffolding plate 7 previously described, and the scaffolding assembly which results, are applicable not only to new scaffolding remaining to be created, but also to existing rolling scaffolding, since the implementation of the invention requires no modification of the vertical structure (3 and diagonal scales 4) scaffolding.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Ladders (AREA)
  • Movable Scaffolding (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
  • Electric Cable Installation (AREA)

Claims (9)

  1. Gerüstplatte, insbesondere Rollgerüstplatte, wobei die allgemein rechteckige Gerüstplatte (7) an ihren entgegengesetzten Enden Mittel (10) zum Aufhängen an horizontalen Stangen (6) umfaßt, welche vertikalen Leitern (3) angehören, wobei die Leitern (3) ihrerseits Teil der vertikalen Struktur eines Gerüsts sind, wobei die Aufhängungsmittel insgesamt vier Haken (10) umfassen, welche an den Enden der Platte (7) um Achsen (13) schwenkbar sind, die in der montierten Stellung der Platte im wesentlichen horizontal und parallel zu den Stangen (6) der Leitern (3) verlaufen, wobei die Haken (10) normalerweise über die Enden der Platte (7) vorstehen, jedoch durch Verschwenken in die Ausmaße der Platte (7) zurückziehbar sind, insbesondere bei Vorüberbewegung an den Stangen (6) der Leitern (3), wobei diese schwenkbaren Haken (10) in ihrem oberen Abschnitt (12) die Gestalt einer Rampe (14) aufweisen, die es ihnen im Verlauf einer Hebebewegung der Platte (7) ermöglicht, sich bei Vorüberbewegung an einer Stange (6) automatisch zurückzuziehen und sich dann oberhalb dieser Stange (6) automatisch wieder anzuordnen,
    dadurch gekennzeichnet, daß die schwenkbaren Haken (10), die an der Außenseite der Längsseiten des Rahmens (8) der Platte (7) jeweils in der Nähe der vier Ecken desselben angeordnet sind, zu den beiden Enden, dem inneren bzw. dem äußeren Ende, ihres oberen Abschnitts (12) hin Ankopplungspunkte (15', 15") für ein Zugseil oder ein Zugkabel (16, 17, 20) umfassen, das zum Hochziehen oder Herunterlassen dieser Platte (7) im Inneren der vertikalen Struktur des Gerüsts eingesetzt wird, wobei der eingesetzte Ankopplungspunkt (15', 15") sich auf der Vertikalen der Schwenkachsen (13) auszurichten sucht, wenn das Zugseil oder Zugkabel (16, 17, 20) gespannt wird.
  2. Gerüstplatte nach Anspruch 1,
    dadurch gekennzeichnet, daß jeder schwenkbare Haken (10) eine allgemein T-förmige Gestalt aufweist mit einem Längsschenkel (11), dessen unteres Ende um eine mit dem Rahmen (8) der Platte (7) verbundene horizontale Achse (13) schwenkbar angebracht ist und dessen oberes Ende an einen oberen erweiterten Abschnitt (12) anschließt, der eine Aufhängungsnase bildet, die dazu vorgesehen ist, mit einer Stange (6) zusammenzuwirken, wobei der obere Abschnitt (12) oberhalb der Aufhängungsnase einen geneigten oder gekrümmten Rand (14) aufweist, der die Rampe bildet, die dazu gedacht ist, mit den Stangen (6) im Hinblick auf das Zurückziehen des Hakens (10) zusammenzuwirken.
  3. Gerüstplatte nach Anspruch 1 oder 2,
    dadurch gekennzeichnet, daß die beiden schwenkbaren Haken (10), die an ein und demselben Ende der Platte (7) zu deren beiden Seiten angeordnet sind, miteinander mittels einer Querstrebe (21) verbunden sind.
  4. Gerüstplatte nach Anspruch 3,
    dadurch gekennzeichnet, daß die Querstrebe (21) die jeweiligen oberen Abschnitte (12) der beiden schwenkbaren Haken (10) miteinander verbindet und oberhalb des Rahmens (8) der Platte (7) verläuft.
  5. Montagesystem für ein Gerüst, insbesondere ein Rollgerüst, unter Verwendung der Gerüstplatte (7) mit schwenkbaren Haken (10) nach einem der Ansprüche 1 bis 4,
    dadurch gekennzeichnet, daß es wenigstens zwei Zugseile oder Zugkabel (16, 17) umfaßt, deren Enden (20) an den an den oberen Abschnitten dieser Haken (10) vorgesehenen Ankopplungspunkten (15', 15") befestigt sind und die über jeweilige Umlenkrollen (18, 19) mit im wesentlichen horizontaler Achse verlaufen, wobei diese Umlenkrollen (18, 19) zum Höhepunkt der Leitern (3) der vertikalen Gerüststruktur hin angeordnet sind.
  6. Montagesystem für ein Gerüst nach Anspruch 5,
    dadurch gekennzeichnet, daß die beiden, jeweils den beiden Enden der Gerüstplatte (7) zugeordneten Zugseile (16, 17) neben ihrem zwischen den schwenkbaren Haken (10) und der entsprechenden Umlenkrolle (18, 19) verlaufenden Trum jeweils ein weiteres Trum aufweisen, das von der entsprechenden Umlenkrolle (18, 19) bis zum Boden verläuft, um von am Boden postierten Bedienungspersonen betätigt werden zu können.
  7. Montagesystem für ein Gerüst nach Anspruch 5,
    dadurch gekennzeichnet, daß die beiden, jeweils den beiden Enden der Gerüstplatte (7) zugeordneten Zugseile (16, 17) neben ihrem zwischen den schwenkbaren Haken (10) und der entsprechenden Umlenkrolle (18, 19) verlaufenden Trum jeweils ein weiteres Trum aufweisen, das von der entsprechenden Umlenkrolle (18, 19) bis zu einer Winde (23, 24) verläuft, die von der Gerüstplatte (7) selbst derart getragen ist, daß die Winden (23, 24) von auf dieser Platte (7) postierten Bedienungspersonen betätigt oder gesteuert werden können.
  8. Montagesystem für ein Gerüst nach Anspruch 7,
    dadurch gekennzeichnet, daß die Umlenkrollen (18, 19) von jeweiligen Querstreben (25, 26) getragen sind, die am Höhepunkt der letzten Elemente der Leitern (3, 3', 3") lösbar angebracht sind.
  9. Montagesystem für ein Gerüst nach einem der Ansprüche 5 - 8,
    dadurch gekennzeichnet, daß jedes Zugseil oder Zugkabel (16, 17) in zwei Endabschnitte (20) unterteilt ist, die jeweils an den Ankopplungspunkten (15', 15") der beiden, an ein und demselben Ende der Platte (7) angeordneten Haken (10) befestigt sind.
EP94420066A 1993-02-24 1994-02-22 Gerüstboden und Montageverfahren für Gerüste mit diesem Boden Expired - Lifetime EP0612899B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9302356 1993-02-24
FR9302356A FR2701981B1 (fr) 1993-02-24 1993-02-24 Plateau d'échafaudage, et système de montage d'échafaudage utilisant ce plateau.

Publications (2)

Publication Number Publication Date
EP0612899A1 EP0612899A1 (de) 1994-08-31
EP0612899B1 true EP0612899B1 (de) 1996-04-24

Family

ID=9444552

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94420066A Expired - Lifetime EP0612899B1 (de) 1993-02-24 1994-02-22 Gerüstboden und Montageverfahren für Gerüste mit diesem Boden

Country Status (4)

Country Link
EP (1) EP0612899B1 (de)
AT (1) ATE137293T1 (de)
DE (1) DE69400159T2 (de)
FR (1) FR2701981B1 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2762342B1 (fr) 1997-04-21 1999-06-04 Sgb Comabi Dispositif pour le montage en securite des echafaudages
FR2859745B1 (fr) * 2003-09-11 2007-11-23 Comabi Plateau d'echafaudage avec dispositif de montage
FR2872841A1 (fr) * 2004-07-12 2006-01-13 Fixator Soc Par Actions Simpli Dispositif support de plate-forme pour l'elevation de charges ou de personnes le long d'un ouvrage
GB0524930D0 (en) * 2005-12-06 2006-01-18 Owens Andrew C Scaffolding platform with folding hooks
GB0706222D0 (en) * 2007-03-30 2007-05-09 Owens Andrew C Simplified scaffolding tower
DE102014222248A1 (de) 2014-10-31 2016-05-04 Hünnebeck GmbH Belag für einen Gerüstturm
CN112176884A (zh) * 2020-10-21 2021-01-05 中国十七冶集团有限公司 一种桥梁脚手架转用装置及方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1832537A (en) * 1930-02-10 1931-11-17 Erwin Charles Platform construction
GB851279A (en) * 1958-01-18 1960-10-12 Theo Schaefer Improvements in or relating to mobile ladders
FR1237869A (fr) * 1959-07-24 1960-08-05 Electricite De France Dispositif de sécurité pour échelle à coulisse
FR2231235A5 (en) * 1973-05-25 1974-12-20 Entrepose Wheeled scaffolding frame - has vertically movable platform with pivoting arms lcoking onto horiz. bars
FR2261387A1 (en) * 1974-02-18 1975-09-12 Petralli Jean Marie Hand operated overhead working platform - winding gear inside cage, guide rollers steady descent, cage carries hooked arms for safety
FR2312623A1 (fr) * 1975-05-28 1976-12-24 Gubri Sa Ets L Perfectionnements apportes aux ensembles du genre des echafaudages
DD157871A3 (de) * 1980-06-03 1982-12-15 Lothar Hoppe Einrichtung fuer arbeitsgerueste mit heb- und senkbarer arbeitsbuehne
BE1001462A7 (fr) * 1988-02-24 1989-11-07 Jomy Sa Nacelle mobile sur echelle.

Also Published As

Publication number Publication date
FR2701981B1 (fr) 1995-04-14
EP0612899A1 (de) 1994-08-31
DE69400159D1 (de) 1996-05-30
DE69400159T2 (de) 1996-10-02
ATE137293T1 (de) 1996-05-15
FR2701981A1 (fr) 1994-09-02

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