EP1679408A2 - Gelenkvorrichtung für faltbare Platform sowie Platform mit einer solchen Vorrichtung - Google Patents

Gelenkvorrichtung für faltbare Platform sowie Platform mit einer solchen Vorrichtung Download PDF

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Publication number
EP1679408A2
EP1679408A2 EP05292764A EP05292764A EP1679408A2 EP 1679408 A2 EP1679408 A2 EP 1679408A2 EP 05292764 A EP05292764 A EP 05292764A EP 05292764 A EP05292764 A EP 05292764A EP 1679408 A2 EP1679408 A2 EP 1679408A2
Authority
EP
European Patent Office
Prior art keywords
platform
articulation device
plane
parts
foldable
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
EP05292764A
Other languages
English (en)
French (fr)
Other versions
EP1679408A3 (de
Inventor
Patrick Lachant
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.)
Centaure SA
Original Assignee
Centaure SA
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 Centaure SA filed Critical Centaure SA
Publication of EP1679408A2 publication Critical patent/EP1679408A2/de
Publication of EP1679408A3 publication Critical patent/EP1679408A3/de
Pending 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
    • E04G1/34—Scaffold constructions able to be folded in prismatic or flat parts or able to be turned down
    • 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
    • E04G7/06—Stiff scaffolding clamps for connecting scaffold members of common shape
    • E04G7/24—Couplings involving arrangements covered by more than one of the subgroups E04G7/08, E04G7/12, E04G7/20, E04G7/22

Definitions

  • the present invention relates to the technical field of foldable work platforms.
  • These platforms are particularly used for the work, for example painting, inside buildings.
  • folding folding scaffolds As an indication, there are currently known on the market such platforms made of aluminum tubes (called folding folding scaffolds) having the following dimensions: length 1.9 m, width 0.8 m, maximum working height 2.8 m, for a maximum load of 200 kg per meter, these platforms once folded, passing through the doors. These dimensions are only indicative.
  • Such platforms are conventionally at least partly foldable and / or removable, so as to reduce their size and to facilitate their storage and transport.
  • braces are removably mounted on two side ladders.
  • Such an old design is for example illustrated by the French patent of 1961 published under the number FR 1 298 470 which describes the mounting braces spacers on two side scales both provided with guide wheels.
  • the braces are disconnected from one of the two frames, thus allowing the folding of the platform.
  • body guards On such a platform, it is possible to place body guards.
  • an assembly without guard rail is possible, so without security means to limit the risk of falling from the person on the floor.
  • the French patent published under the number 2,619,874, of 1988 illustrates the establishment of tubular guard, presumably by interlocking on the assembly formed by the floor, the lateral amounts in ladders and braces. Reference may also be made to the US patent published in 1969 under number 3 463 265.
  • the platform consists of two opposite rigid vertical frames in the form of ladders, one of the side racks. carrying at its base wheels, these side frames being connected by a third vertical frame foldable in its middle along a vertical axis.
  • the third frame is itself hinged at its lateral ends on the first two frames, around vertical axes, and this third frame constitutes an element. back, while the front part of the platform is open.
  • the third frame, tubular, forms guard body.
  • the platform comprises arched elements forming a balustrade, whose ends are introduced into the open ends of the uprights of the side frames.
  • balustrade elements form guard body as soon as the plateau is placed at some useful height.
  • the assembly described in document FR 2 717 847 does not make it possible to ascertain the presence of a guardrail at any height of plate.
  • the location of the third foldable frame is fixed by construction, the articulation on the two vertical frames of the two parts of the foldable frame being provided by means of sleeves blocked in vertical sliding between the bars of the lateral uprights.
  • Structures similar to that described in the document FR 2 717 847 of 1995 can be found in the US patents published under Nos. 4,534,447 (of 1985), 5,086,875 (of 1992), 5,555,954 (of 1996) or in British Patent 1,311,569 published in 1973.
  • the applicant has endeavored to solve the above problems by providing a radically new design platform structure, while remaining simple, inexpensive, easy and safe to assemble.
  • the invention relates, in a first aspect, to a folding work platform articulation device, this device comprising at least two parts defining, by their assembly, a hole in which a first slender member of the platform can be accommodated, these two assembled parts further defining a passage lumen for a second elements of the platform, the first and second elements defining a first plane, this device comprising means for securing a third platform element, such that this third element is mounted movably in rotation, with respect to said first plane, between at least two extreme positions, namely a first extreme position, of withdrawal, in which the third element extends substantially parallel to said first plane, and a second position in which this third element is substantially perpendicular to said first plane.
  • the device has the following characters, if necessary combined.
  • the hole in which a first slender member of the platform can be rotatably mounted is a through hole. It is thus possible to mount the hinge device around the junction of a cross member and an amount at any height of the platform.
  • the passage of light of a second element of the platform extends over an angular sector of approximately 180 ° substantially perpendicular to the axis of the hole in which a first element of the platform can be accommodated.
  • the third element is articulated in rotation along a path of about 180 ° in rotation relative to the axis of the first slender element.
  • the hinge device comprises three parts, namely a first part, provided with a passage reservation of said first platform member and two other parts whose assembly with the first part defines the passage of said second platform element .
  • said two other parts are substantially identical.
  • the device once assembled, has two substantially perpendicular planes of symmetry, namely a first plane, equatorial, on either side of which the passageway of the second platform element extends, and a second plane, axial, containing the axis of the hole housing the first slender platform element.
  • the device presents, once assembled, a substantially spherical envelope, devoid of asperities. This configuration limits the risk of injury to people using the device, especially during the assembly / disassembly of the platform, or during its withdrawal / deployment. This configuration is also good ergonomics and taken in hand during assembly.
  • the parts of the device may or may not be hinged together, their assembly being ensured, reversibly, for example by screwing or any other equivalent means.
  • the securing means of said third platform member comprise an outer groove forming a bearing surface for said third element.
  • a blind or through hole serves as a housing for an end part of this third element.
  • the invention relates, according to a second aspect, to a work platform comprising at least one articulation device as presented above, in which the third element is a screen, and / or in which the first element is a side jamb member, the second member being a cross member of this side jamb.
  • the platform comprises two lateral uprights in the form of a scale on each of which is mounted a third element, means for securing between them of these third elements, in a plane substantially perpendicular to those of the lateral uprights.
  • the platform 1 visible in FIGS. 1 to 3 comprises two rigid lateral uprights, for example made of aluminum or steel tube, these two lateral uprights being substantially identical.
  • Each of these lateral uprights 2, 3 comprises, in a manner known per se, two longitudinal members 4a, 4b on which cross members 5 are mounted.
  • the longitudinal members 4a, 4b are substantially vertical and parallel and the cross members 5 are substantially identical and equidistant, the amounts 2, 3 thus defining two vertical straight vertical ladders whose sleepers are the bars.
  • scale is used here to signal both the analogy of form with a scale in the strict sense, and also to indicate that sleepers may not only serve as support for trays 6, but can also allow to mount laterally in the platform, using the amounts as a ladder.
  • the amounts could be of different shape from one another. It is also understood that at least one of the amounts may be provided with non-parallel spars, for example more spaced apart at their base than at their top, so as to confer greater stability to the platform.
  • the sleepers may be equidistant or not, and be identical or not. Thus, for example, some sleepers may be of large section and serve as support for one or more trays 6, and others may be of smaller section and serve as a ladder bar or fixing points or hooking for accessories or tools.
  • the tray or trays 6 are advantageously mounted in rotation around a cross member 5a of a post and placed, for example snapped onto the crosspiece 5b of the other post placed opposite.
  • each of the two plates 6a, 6b can be pressed against a lateral upright 2, 3.
  • the platform 1 comprises, in a manner known per se, two wheels 7, 8 on one of its lateral uprights 2, 3.
  • the other upright, not provided with wheels, will advantageously be provided with friction means such as rubber pads.
  • each of the two uprights is provided with wheels, where appropriate and / or means of blocking the movement of these wheels.
  • the platform is provided with two bars 9a, 9b substantially identical, these two bars being each rotatably mounted around a spar 4b of a post 2, 3. This articulated assembly is obtained by the means shown in Figures 4 to 6.
  • articulation means 10 comprise three parts 11, 12, 13 which, when they are assembled together, define a substantially spherical body, devoid of projections, this body comprising an axial through hole 14.
  • a cross member of the upright passes through an annular slot 15 of the hinge body.
  • This light extends substantially 180 ° on either side of a plane perpendicular to the through hole 14, this plane being substantially equatorial to the spherical articulation body.
  • the hinge body is provided with a reservation 16 shaped so that a bar 9a, 9b comes to rest and can be fixed, for example by screwing, a radial threaded hole 17 appearing in Figure 5.
  • each bar 9a, 9b comprises two parallel end portions 18, 19 that are connected by a substantially vertical tubular portion 20.
  • Each of the two end portions 18, 19 of the two bars 9a, 9b is mounted in a reservation 16 of a hinge body.
  • the bars 9a, 9b are movably mounted in a substantially 180 ° stroke, corresponding to the angular opening of the light 15.
  • the bars 9a 9b are arranged in such a way that their vertical sections 20 are closest to each other, or even touch each other.
  • a temporary locking means 21 makes it possible to reversibly connect the bars 9a, 9b in this intermediate position.
  • the assembly of the hinge body is obtained by screwing, through four holes 22, 23, 24, 25 of the first part 11, substantially hemispherical, these holes each facing a through hole 26, 27, 28, 29, the two other parts 12, 13 of the hinge body are provided, this assembly thus obtained being linked by screw + nut.
  • the two parts 12, 13 intended to be mounted on the hemispherical part of the hinge body are substantially identical and the hemispherical part has two perpendicular symmetry planes PS1, PS2.
  • the same hinge body, mounted on the longitudinal members 4b could be mounted on the longitudinal members 4a of the uprights 2, 3, this hinge body is not provided with a high orientation / low.
  • the articulation that has just been presented finds a particularly advantageous application in foldable platforms. It can also be used for scaffolding plans and ladders plans. This articulation encloses the spar and can move, at the discretion of the user, in rotation, while remaining indexed to the right of the spar / cross connection chosen for its removable assembly.
  • the hinge body can be made of polymer material, composite material, aluminum foundry.
  • the body can be of color and external shape adapted to the different tastes of the buyers.
  • the installation of this joint does not require drilling the rails or sleepers.
  • the joints and thus the bars 9a, 9b screen can be placed at the desired height depending eg on the use of the platform.
  • This platform is not only foldable but completely removable, and its elements can be used in other types of scaffolding.
  • the rotation of the bars 9a, 9b is obtained with low friction and without noise.
  • the introduction of calluses between the parts 11, 12 13 of the hinge body makes it possible to accommodate different sections of longitudinal members or tubes on which the hinge body must be fixed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Ladders (AREA)
  • Toys (AREA)
  • Carriages For Children, Sleds, And Other Hand-Operated Vehicles (AREA)
EP05292764A 2005-01-10 2005-12-21 Gelenkvorrichtung für faltbare Platform sowie Platform mit einer solchen Vorrichtung Pending EP1679408A3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0500219A FR2880641B1 (fr) 2005-01-10 2005-01-10 Dispositif d'articulation pour plateforme pliable et plateforme comprenant un tel dispositif

Publications (2)

Publication Number Publication Date
EP1679408A2 true EP1679408A2 (de) 2006-07-12
EP1679408A3 EP1679408A3 (de) 2009-07-01

Family

ID=34953978

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05292764A Pending EP1679408A3 (de) 2005-01-10 2005-12-21 Gelenkvorrichtung für faltbare Platform sowie Platform mit einer solchen Vorrichtung

Country Status (2)

Country Link
EP (1) EP1679408A3 (de)
FR (1) FR2880641B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2479202A (en) * 2010-04-01 2011-10-05 James Lawrence Weston Collapsible scaffolding tower
WO2012104748A1 (en) * 2011-02-01 2012-08-09 Teletower.Com Limited Guardrail for an elevated working platform
CN112854706A (zh) * 2021-01-25 2021-05-28 王一雯 一种新型建筑用升降机

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2443487A (en) * 2006-11-03 2008-05-07 Birchwood Products Ltd Collapsible work stand

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2599670A (en) 1950-02-01 1952-06-10 George G Thomas Foldable scaffold for household uses
FR1298470A (fr) 1961-05-31 1962-07-13 Applic De Materiel Moderne S A échafaudage auto-mobile pliant
US3463265A (en) 1968-07-08 1969-08-26 Fairfield Ind Inc Telescoping collapsible platform support
GB1311569A (en) 1969-08-05 1973-03-28 Layher Gmbh Wilhelm Collapsible scaffolding
US4534447A (en) 1984-04-03 1985-08-13 Lucien Champigny Foldable ladder scaffold
FR2619874A3 (fr) 1987-09-02 1989-03-03 Fumagalli Ermanno Dispositif a etaux pour l'ancrage des traverses en croisillon d'un support
US5086875A (en) 1990-10-31 1992-02-11 Shreve Iii Arthur L Folding scaffold
FR2717847A3 (fr) 1994-03-25 1995-09-29 Italkrea Srl Echafaudage mobile du type repliable.
US5555954A (en) 1994-07-29 1996-09-17 Emerson Electric Co. Collapsible-expansible support assembly

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1053659A (fr) * 1951-04-12 1954-02-04 Pièce de raccord pour construction en tubes
AU462859B2 (en) * 1972-01-25 1975-07-10 Torsten Brimberg Improvements in or relating to rod clamps
GB2070120B (en) * 1980-02-22 1983-08-10 Reynolds E T Collapsible builders stage for use on steps

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2599670A (en) 1950-02-01 1952-06-10 George G Thomas Foldable scaffold for household uses
FR1298470A (fr) 1961-05-31 1962-07-13 Applic De Materiel Moderne S A échafaudage auto-mobile pliant
US3463265A (en) 1968-07-08 1969-08-26 Fairfield Ind Inc Telescoping collapsible platform support
GB1311569A (en) 1969-08-05 1973-03-28 Layher Gmbh Wilhelm Collapsible scaffolding
US4534447A (en) 1984-04-03 1985-08-13 Lucien Champigny Foldable ladder scaffold
FR2619874A3 (fr) 1987-09-02 1989-03-03 Fumagalli Ermanno Dispositif a etaux pour l'ancrage des traverses en croisillon d'un support
US5086875A (en) 1990-10-31 1992-02-11 Shreve Iii Arthur L Folding scaffold
FR2717847A3 (fr) 1994-03-25 1995-09-29 Italkrea Srl Echafaudage mobile du type repliable.
US5555954A (en) 1994-07-29 1996-09-17 Emerson Electric Co. Collapsible-expansible support assembly

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2479202A (en) * 2010-04-01 2011-10-05 James Lawrence Weston Collapsible scaffolding tower
WO2012104748A1 (en) * 2011-02-01 2012-08-09 Teletower.Com Limited Guardrail for an elevated working platform
US9366042B2 (en) 2011-02-01 2016-06-14 Teletower.Com Limited Guardrail for an elevated working platform
CN112854706A (zh) * 2021-01-25 2021-05-28 王一雯 一种新型建筑用升降机

Also Published As

Publication number Publication date
FR2880641B1 (fr) 2007-04-20
EP1679408A3 (de) 2009-07-01
FR2880641A1 (fr) 2006-07-14

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