EP0305014A2 - Echafaudage comportant montants, traverses et plates-formes attachées aux traverses - Google Patents

Echafaudage comportant montants, traverses et plates-formes attachées aux traverses Download PDF

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Publication number
EP0305014A2
EP0305014A2 EP88201809A EP88201809A EP0305014A2 EP 0305014 A2 EP0305014 A2 EP 0305014A2 EP 88201809 A EP88201809 A EP 88201809A EP 88201809 A EP88201809 A EP 88201809A EP 0305014 A2 EP0305014 A2 EP 0305014A2
Authority
EP
European Patent Office
Prior art keywords
catch
cross member
platform
claw
cross members
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.)
Withdrawn
Application number
EP88201809A
Other languages
German (de)
English (en)
Other versions
EP0305014A3 (fr
Inventor
Jochem De Groot
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.)
BELEGGINGSMAATSCHAPPIJ BOUWMATERIEEL EUROPA BV
Original Assignee
BELEGGINGSMAATSCHAPPIJ BOUWMATERIEEL EUROPA BV
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 BELEGGINGSMAATSCHAPPIJ BOUWMATERIEEL EUROPA BV filed Critical BELEGGINGSMAATSCHAPPIJ BOUWMATERIEEL EUROPA BV
Publication of EP0305014A2 publication Critical patent/EP0305014A2/fr
Publication of EP0305014A3 publication Critical patent/EP0305014A3/fr
Withdrawn legal-status Critical Current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
    • E04G1/00—Scaffolds primarily resting on the ground
    • E04G1/15—Scaffolds primarily resting on the ground essentially comprising special means for supporting or forming platforms; Platforms
    • E04G1/154—Non-detachably fixed and secured connections between platform and scaffold
    • 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
    • E04G7/00—Connections between parts of the scaffold
    • E04G7/02—Connections between parts of the scaffold with separate coupling elements
    • E04G7/28—Clips or connections for securing boards

Definitions

  • the invention relates to a scaffold construction comprising uprights and cross members connected to the uprights and keeping them spaced apart, on which cross members the open ends of substantially U-shaped claws may be positioned from above, said claws being connected to a platform and being automatically locked with respect to the cross members after mounting.
  • Such a scaffold construction is known from: Dutch Patent Application No. 86 01564, laid open to public inspection.
  • locking is achieved in that a part of the upper surface of the cross members, which are circular in cross-section, will come to rest into recesses of the U-shaped claws while the substantially vertical parts of the claws are at some distance from the relevant cross member and the most outwardly positioned leg of the claw is slightly curved inwardly such that it will be within the outer circumference of the relevant cross-seciton, as seen in vertical direction. If now an upwardly directed movement is exerted on the claw the inwardly curved part of it will come to rest against the cross member, so that it is prevented that the claw leaves the cross member.
  • a disadvantage of this known construction is not only that the internal shape of the claws should comply with very high demands, but it is especially disadvantageous that on mounting and dismantling of a platform, this has to be displaced to and fro in a particular manner in order to be able to release the claws from the cross members on lifting the platform.
  • a further disadvantage of the known construction is also that the locking of the claws is not absolutely safe and that there is such a play present between the main part of the claw and the cross member that no substantial forces exerted in a horizontal direction on the platform, can be transferred to the cross member without more.
  • the platform can not act for stiffening the scaffold construction in the plane of the platform.
  • the invention removes these disadvantages and provides to that end that for achieving the locking a catch is present, which is displaceably embraced by a U-shaped strap connected to the platform, said catch being shaped such that when lowering a claw of a platform onto a cross member, the catch will be lifted from the locking position by the cross member and will resume the locking position once the claw rests on the cross member.
  • the catch When the platform has to be removed the catch simply may be pressed manually to a higher position in which it does not lock the platform anymore.
  • the catch would be reset into its locking position by means of a spring, preferably the catch will be made such that it will occupy the locking position under the effect of its own weight.
  • the catch is formed by a twice bended strip with substantially the shape of a U, the legs of which are making an obtuse angle with the body, the strip being provided with extending parts at both ends so that the catch can not be removed from the strap which is connected to the platform.
  • the catch and the strap by which it is embraced are executed such that the catch may remain in the unlocked position as long as no tilting movement or a blow is exerted on the platform.
  • the claw may have the shape of a U, of which the inner surfaces of the legs are extending substantially parallel to each other, in particular it may be provided that the claw is having an internal shape adapted to the circular shape of the cross member in such a way that the claw is having a widened inlet opening but that there is no or substantially no play present between the claw and the cross member in the ultimate position.
  • the claw is having a cavity adapted to the largest diameter of the cross member applied, said cavity having a recess for receiving a cross member with a diameter which is substantially smaller than the first mentioned diameter.
  • the scaffold construction shown in Figs. 1 and 2 consists of the uprights 1, provided with the junctions 2 and being mutually connected by means of the cross members 3.
  • the cross members 3 are mutually connected by means of platforms 4, the claws 5 of which are mounted on the cross members 3.
  • diagonally extending braces 6 may be used to obtain adequate stability of the scaffold construction.
  • the claws 5, connected to a platform 4 are staggered in respect of each other so that the claws of two platforms 4 may be mounted on one cross member 3.
  • the platforms 4 are formed by the frame 7, which is provided with a locking device 8 at each one of its ends 7a.
  • the locking devices 8 are staggered at the ends.
  • the frame 7 is connected with a plywood slab 9, such that the platform 4 represents a rigid entity in its plane.
  • a reinforcement 10 is mounted under the slab 9 at the place of the locking device 8, as in particular appears from Fig. 3 too.
  • the locking device 8 is formed by a U-strap 11, welded on the end 7a of the frame 7, by which a catch 12 is displaceably embraced.
  • the catch 12 is formed by a substantially U-shaped strip, the body 13 of which is provided with the legs 14 and 15.
  • the leg 14 is connected to the lower pin 16 and the leg 15 to the upper pin 17.
  • the pins 16 and 17 extend outside the strap 11 so that the catch 12 can not be removed from the strap 11. In general the catch 12 will assume the position as shown in Fig. 3 by its own weight.
  • the catch 12 can be brought into the position as shown in Fig. 7, so that the claw 5 of the platform can be released from the cross member 3. This position is shown in Fig. 8.
  • the catch When tilting the platform from the position shown in Fig. 8, or on touching the catch 12, the catch will very easily fall back towards the position as shown in Figs. 3 and 5.
  • the catch 12 will maintain the position as shown in Fig. 8, so that after mounting of the platform 4 the catch 12 will always be in the locking position.
  • the inner walls of the legs extend parallel to each other.
  • some play should be present between the claw 5 and the cross member 3. Though this play may be kept small, it nevertheless will result in a less stable connection between a platform 4 and a cross member 3.
  • the claw 18 is composed of the inlet section 19, the sec­tion 20 with a radius of curvature R corresponding with the radius of the cross member 3, the section 21 having a radius of curvature S corresponding with the radius of a cross member with a smaller diameter, a section 22 with the radius of curvature R again and a substantially straight section 23.
  • a claw 18, shaped in this manner, can be easily mounted on the cross member 3 while thereafter the claw can no longer be displaced in horizontal direction with respect to the cross member.
  • the claw 18 can be applied also when cross members with a smaller diameter are used.
  • Fig. 9 the platform positioned next to the platform 4 is shown in dash-lines as well as the claw 18 connected to it. For better clarity the locking device 8 has been deleted from Fig. 9.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Ladders (AREA)
EP88201809A 1987-08-28 1988-08-25 Echafaudage comportant montants, traverses et plates-formes attachées aux traverses Withdrawn EP0305014A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8702026A NL8702026A (nl) 1987-08-28 1987-08-28 Steigerconstructie bestaande uit staanders, kortelingen, en met de kortelingen verbonden platforms.
NL8702026 1987-08-28

Publications (2)

Publication Number Publication Date
EP0305014A2 true EP0305014A2 (fr) 1989-03-01
EP0305014A3 EP0305014A3 (fr) 1989-04-26

Family

ID=19850516

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88201809A Withdrawn EP0305014A3 (fr) 1987-08-28 1988-08-25 Echafaudage comportant montants, traverses et plates-formes attachées aux traverses

Country Status (2)

Country Link
EP (1) EP0305014A3 (fr)
NL (1) NL8702026A (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0407680A1 (fr) * 1989-07-12 1991-01-16 TRAVHYDRO ECHAFAUDAGES Société Anonyme Procédé de liaison d'un plancher préfabriqué avec une traverse horizontale, et plancher préfabriqué pour ce procédé
FR2690942A1 (fr) * 1992-05-06 1993-11-12 Casaccia Rene Caillebottis à fixation incorporée sur élément tubulaire.
DE9314353U1 (de) * 1993-09-22 1993-12-16 Hans-J. Gebauer GmbH, 56727 Mayen Arbeitsbühne, vorzugsweise Gerüst zur Einrüstung von Fassaden o.dgl.
EP0637660A1 (fr) * 1993-08-02 1995-02-08 Gerald Merkel Verrou anti-levage pour plancher d'échafaudage
WO1996001350A1 (fr) * 1994-07-01 1996-01-18 Krause-Werk Gmbh & Co. Kg Plate-forme
EP0892126A1 (fr) * 1997-07-14 1999-01-20 Alusuisse Technology & Management AG Plate-forme de circulation pour échafaudages, avec dispositif de maintien en position
US5915497A (en) * 1994-11-11 1999-06-29 Krause-Werk Gmbh & Co. Kg Working platform
FR2781534A1 (fr) * 1998-07-21 2000-01-28 Entrepose Echafaudages Dispositif de verrouillage sur une traverse horizontale
WO2000061891A1 (fr) * 1999-04-09 2000-10-19 Pluseight Technology Ab Dispositif de verrouillage pour elements d'echafaudage

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2058189B (en) * 1979-08-15 1983-10-05 Gkn Mills Building Serv Releasable fastenings
DE3014212A1 (de) * 1980-04-14 1981-10-15 Plettac Gmbh Stahlbau Und Gesenkschmiede, 5970 Plettenberg Baugeruest, insbesondere fahrgeruest
NL178709C (nl) * 1981-01-21 1986-05-01 Woodland B V Inrichting voor het bevestigen van een voorwerp met een vlak aan een staaf.
GB2127086B (en) * 1982-08-20 1986-01-29 Alto Systems Ltd Automatic latch for use in scaffolding structures

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0407680A1 (fr) * 1989-07-12 1991-01-16 TRAVHYDRO ECHAFAUDAGES Société Anonyme Procédé de liaison d'un plancher préfabriqué avec une traverse horizontale, et plancher préfabriqué pour ce procédé
FR2690942A1 (fr) * 1992-05-06 1993-11-12 Casaccia Rene Caillebottis à fixation incorporée sur élément tubulaire.
EP0637660A1 (fr) * 1993-08-02 1995-02-08 Gerald Merkel Verrou anti-levage pour plancher d'échafaudage
DE9314353U1 (de) * 1993-09-22 1993-12-16 Hans-J. Gebauer GmbH, 56727 Mayen Arbeitsbühne, vorzugsweise Gerüst zur Einrüstung von Fassaden o.dgl.
WO1996001350A1 (fr) * 1994-07-01 1996-01-18 Krause-Werk Gmbh & Co. Kg Plate-forme
RU2140506C1 (ru) * 1994-07-01 1999-10-27 Краузе-Верк Гмбх Унд Ко. Кг Настил-площадка
US5915497A (en) * 1994-11-11 1999-06-29 Krause-Werk Gmbh & Co. Kg Working platform
EP0892126A1 (fr) * 1997-07-14 1999-01-20 Alusuisse Technology & Management AG Plate-forme de circulation pour échafaudages, avec dispositif de maintien en position
FR2781534A1 (fr) * 1998-07-21 2000-01-28 Entrepose Echafaudages Dispositif de verrouillage sur une traverse horizontale
WO2000061891A1 (fr) * 1999-04-09 2000-10-19 Pluseight Technology Ab Dispositif de verrouillage pour elements d'echafaudage
US6530456B1 (en) 1999-04-09 2003-03-11 Pluseight Technology Ab Locking device for scaffolding elements

Also Published As

Publication number Publication date
EP0305014A3 (fr) 1989-04-26
NL8702026A (nl) 1989-03-16

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