EP3992394A1 - Foldable structure for corbel working for manual adjustment of the extension length of a lateral frame - Google Patents
Foldable structure for corbel working for manual adjustment of the extension length of a lateral frame Download PDFInfo
- Publication number
- EP3992394A1 EP3992394A1 EP21205383.9A EP21205383A EP3992394A1 EP 3992394 A1 EP3992394 A1 EP 3992394A1 EP 21205383 A EP21205383 A EP 21205383A EP 3992394 A1 EP3992394 A1 EP 3992394A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- guide
- guide member
- side frame
- rolling member
- rolling
- 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.)
- Granted
Links
- 238000005096 rolling process Methods 0.000 claims abstract description 58
- 238000010276 construction Methods 0.000 claims abstract description 8
- 238000009415 formwork Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 238000012423 maintenance Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
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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
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
- E04G17/002—Workplatforms, railings; Arrangements for pouring concrete, attached to the form
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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
- E04G5/00—Component parts or accessories for scaffolds
- E04G5/06—Consoles; Brackets
- E04G5/062—Consoles; Brackets specially adapted for attachment to building walls
-
- 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
- E04G5/14—Railings
- E04G5/144—Railings specific for the lateral, i.e. short side of a scaffold
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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
- E04G1/15—Scaffolds primarily resting on the ground essentially comprising special means for supporting or forming platforms; Platforms
- E04G2001/157—Extensible platforms, e.g. telescopic platforms
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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
- E04G5/00—Component parts or accessories for scaffolds
- E04G5/06—Consoles; Brackets
- E04G2005/068—Connections of consoles at an angle
-
- 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
- E04G5/14—Railings
- E04G2005/148—Railings latticed or netted
-
- 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
- E04G5/14—Railings
- E04G5/142—Railings extensible or telescopic
Definitions
- the present invention relates to the building sector and, more particularly, to a foldable cantilevered work structure configured to support a vertical formwork panel.
- a collapsible cantilevered work structure 103 is configured to be mounted to a building wall of a building such as a building using mounting clips mounted in the building wall.
- a foldable work structure corbelled by the patent FR2906286 of the company SATECO is shown in FIG. 1 .
- the structure 103 comprises a circulation plate 104 extending horizontally and comprising a frame 140 on which rests a floor 141.
- the frame 140 has a rectangular shape and includes a plurality of longitudinal crosspieces.
- the circulation plate 104 extends along its length along an X axis and along its width along a Y axis.
- the circulation plate 104 comprises at least one front edge 104A arranged to extend close to said building wall and at least one rear edge 104B opposite said front edge 104A.
- the circulation tray 104 has a single front edge 104A and a single rear edge 104B. Nevertheless, it goes without saying that the circulation tray 104 could comprise more than one front edge 104A and more than one rear edge 104B.
- the circulation plate 104 further comprises elements for fixing to the building wall.
- the fixing members are in the form of two articulated uprights 151 each at a front end on the circulation plate 104 around a hinge axis substantially parallel to the circulation plate 104, between a folded position of storage and an unfolded position of use substantially orthogonal to the circulation plate 104, at least one foldable arm 152, connecting the circulation plate 104 and the articulated upright 151.
- the structure 103 can extend several meters high to form high building walls.
- the structure 103 in order to prevent the fall of operators circulating on the circulation platform 104, the structure 103 conventionally comprises at least one rear protective canopy 161 and side guardrails 162.
- the circulation plate 104 comprises lateral extensions so as to increase its length along the X axis in a configurable manner.
- a circulation tray comprising a central frame, a left side frame and a right side frame which are slidably mounted in the central frame in an adjustable manner.
- each side frame has a high mass and the adjustment of the extension length is a source of hardship for the operators.
- the assistance system is in the form of a set of connecting rods which unfold to simultaneously separate the right side frame and the left side frame.
- Such an assistance system has a high mass as well as a large size due to the presence of numerous connecting rods. In addition, it does not allow independent adjustment of the length of each side frame.
- any assistance system significantly increases the mass of the cantilever work platform.
- the operator to activate the assistance system, the operator must use a key or a screwdriver, which has a drawback.
- One of the objectives of the present invention is to provide a foldable cantilevered work structure which eliminates at least some of these drawbacks.
- the invention relates to a foldable cantilevered work structure intended to be mounted on a vertical construction wall and to support a formwork panel, the structure comprising a circulation plate comprising means of attachment to said vertical construction wall, the plate circulation extending along its length along a first axis and along its width along a second axis, the circulation plate comprising a central frame and at least one side frame mounted to slide relative to the central frame along the first axis, the central frame comprising at least one first guide member configured to slide with at least one second guide member of the side frame.
- the structure is remarkable in that it comprises at least one running member positioned at the interface between the second guide member and the first guide member so as to allow an operator to move the side frame with reduced friction by relative to the central frame manually and without tools, the foldable cantilevered working structure being free of gear assistance member for moving the side frame.
- an operator can move the side frame with reduced friction relative to the central frame.
- the movement is carried out without tools, in particular without a gear assistance member.
- the invention takes the opposite view of a prejudice which existed in the prior art and which required the provision of a gear-driven assistance member to carry out the movement of a side frame whose mass may exceed 100 kg.
- only rolling members are provided to move the side frame relative to the central frame, which makes it possible to reduce the mass as well as the cost of a foldable cantilevered work structure compared to a foldable structure of cantilevered work comprising a geared assistance member.
- the manual and tool-free handling is very advantageous since the operator can change the length at any time and without delay.
- the adjustment can be carried out precisely by the operator who can manipulate the side frame like a drawer.
- the foldable cantilevered work structure is free of any pneumatic or hydraulic assistance device.
- the structure is thus lighter and more economical.
- the foldable cantilevered work structure is free of assistance members comprising connecting rods.
- At least one rolling member is configured to guide a bottom surface of the second guide member.
- a guide of a lower surface makes it possible to significantly eliminate the friction associated with the weight of the side frame under the effect of gravity. The difficulty of the operator is thus reduced.
- guiding a lower surface is meant guiding at the level of a lower interface, the rolling member possibly belonging to the first guiding member or to the second guiding member.
- At least one rolling member is configured to guide an upper surface of the second guide member. Guiding an upper surface makes it possible to guide any inclination of the second guide member due to the overhang in order to limit friction in the lower part and in the upper part.
- guiding an upper surface is meant guiding at an upper interface, the rolling member possibly belonging to the first guiding member or to the second guiding member.
- At least one first rolling member is configured to guide a lower surface of the second guiding member
- at least one second rolling member is configured to guide an upper surface of the second guiding member.
- the first rolling member is located at the level of the side frame while the second rolling member is located at the level of the central frame.
- At least one rolling member comprises at least one cage with a plurality of bearings, preferably a needle cage.
- each rolling member is in the form of a needle cage.
- the use of a plurality of bearings is advantageous to optimally reduce friction.
- each bearing is in the form of a needle or a ball.
- maintenance of a cage with a plurality of bearings is easy, the cage advantageously protecting the bearings against concrete projections.
- a needle cage is very advantageous in the context of a cantilevered working structure given that it has a small footprint, which allows its positioning at the interface between a second guide member and a first guide member.
- At least one rolling member is integral with the first guide member. This advantageously makes it possible to guide the second guide member when the latter slides with the first guide member, the positioning of the rolling member being precise for optimum reduction of friction.
- At least one rolling member is integral with the second guide member, in particular, in the high position.
- the first guide member comprising at least one lower wall in which is formed a through opening leading to the second guide member
- the rolling member is mounted in the through opening, preferably from the outside of the first guide member.
- the rolling member is integrated into the first guide member, which limits the size.
- mounting from the outside of the rolling member facilitates maintenance of the rolling member. This can be conveniently replaced by an operator.
- the structure comprises at least one second rolling member positioned at the interface between said second guide member and said first guide member.
- the second guide member comprising at least one upper wall in which is formed a second through opening leading to the first guide member, a second rolling member is mounted in the second through opening.
- the second through-opening is positioned at one end of the second guide member so as to support it during its cantilever extension.
- the first guide member is in the form of a hollow section in which the second guide member slides.
- the central frame comprising at least two first guide members configured to slide respectively with at least two second guide members of the side frame.
- a distributed guide makes it possible to limit and distribute the forces in each second guide member.
- At least one rolling member is positioned at the interface between each second guide member and the first guide member with which it slides.
- the presence of a rolling member at each interface makes it possible to reduce friction in a distributed manner, which is advantageous.
- the invention also relates to a method for moving a side frame of a structure as presented above, the adjustment method comprising a step of manual movement without tools by an operator of the side frame, the rolling member allowing movement of the second guide member of the side frame with reduced friction relative to the first guide member of the central frame.
- a foldable cantilevered working structure 3 configured to support a vertical formwork panel (not shown).
- the foldable cantilevered work structure 3 is configured to be mounted on a vertical construction wall of a building such as a building using fastening clips mounted in the vertical construction wall.
- Structure 3 comprises a circulation plate 4 comprising at least one front edge 4A arranged to extend close to said wall and at least one rear edge 4B opposite said front edge 4A.
- the circulation tray 4 has a single front edge 4A and a single rear edge 4B. Nevertheless, it goes without saying that the circulation plate 4 could comprise more than one front edge 4A and more than one rear edge 4B.
- the circulation plate 4 extends along its length along a first axis X, along its width along a second axis Y and vertically along a third axis Z so as to form an orthogonal reference (X, Y, Z).
- the circulation plate 4 further comprises members for fixing to the vertical building wall.
- the fixing members are in the form of two articulated uprights 51 each at a front end on the circulation plate 4 around a hinge axis substantially parallel to the circulation plate 4, between a folded position of storage and an unfolded position of use substantially orthogonal to the circulation plate 4, at least one foldable arm 52, connecting the circulation plate 4 and the articulated upright 51.
- the structure 3 can extend to several meters in height to form vertical walls of high construction.
- the structure 3 conventionally comprises at least one rear protective canopy 61 and side guardrails 62.
- the circulation tray 4 comprises a central frame 40C and two side frames 40G, 40D (a left side frame 40G and a right side frame 40D) mounted to slide relative to the central frame 40C along the first axis X.
- the central frame 40C comprises several first guide members 43, extending along the first axis X, and several horizontal crosspieces 42, extending along the second axis Y so as to form a support structure for receiving a central floor 41 ( to see picture 2 ).
- the central frame 40C comprises two horizontal crosspieces 42 as well as three first guide members 43 but it goes without saying that their numbers could be different.
- side frames 40G, 40R are symmetrical. Also, for the sake of clarity and conciseness, only the 40D right side frame will be presented below.
- the right side frame 40D comprises several second guide members 44, extending along the first axis X, and a single horizontal crosspiece 45, extending along the second Y axis so as to form a support structure to receive a side floor (not shown). It goes without saying that the numbers of second guide members 44 and of horizontal crosspieces 45 could be different.
- the horizontal crosspiece 45 forms one end of the right side frame 40D.
- the second guide members 44 are connected to the horizontal crosspiece 45 in a movable manner in order to allow the horizontal crosspiece 45 to tilt with respect to the second axis Y, in particular, when the extension lengths second guide members 44 are different ( figure 11 ).
- the second guide members 44 are connected in an articulated manner to the horizontal crosspiece 45.
- each first guide member 43 of the central frame 40C is configured to slide with at least one second guide member 44 of the right side frame 40D along the first axis X.
- the first guide members 43 and the second guide 44 are in the form of hollow sections, in particular, of rectangular section.
- the second guide members 44 are configured to slide inside the first guide members 43 but it goes without saying that the reverse would be possible.
- Each hollow profile defines a lower wall and an upper wall which are preferably planar to facilitate sliding.
- each second guide member 44 is in the form of a profile of rectangular section and comprises through-cavities formed in the lower wall of the rectangular section. It goes without saying that the lower wall could be solid, in particular, to improve rolling, as will be presented below.
- each second guide member 44 can move within the first guide member 43 independently of the other second guide members 44.
- the extension length of each second guide member 44 can be adjusted independent as shown in figure 11 .
- the central frame 40C comprises rolling members 9 configured to allow effortless sliding of the second guide members 44 in relation to the first guide members 43.
- a rolling member 9 is mounted in each first guide member 43.
- the rolling member 9 is mounted at the mouth of the first guide member 43 which is hollow in order to internally guide the second guide member 44.
- the rolling member 9 is configured to guide a lower surface 44a of the second guide member 44.
- Such positioning is advantageous given that it makes it possible to eliminate all the friction induced by gravity on the second guide member 44 .
- the rolling member 9 is fixed to the lower wall 430 of the first guide member 43.
- the lower wall 430 of the first guide member 43 comprises a through opening 431 in which the guide member is mounted. bearing 9. This makes it possible to mount the rolling member 9 from the outside in order to be able to open into the internal cavity of the first guide member 43 and thus come into contact with the lower surface 44a of the second guide member 44. rolling member 9 is thus integrated into the guide but remains easily accessible, in particular for its maintenance.
- the rolling member 9 comprises a plurality of bearings 91 mounted in a cage 90.
- the rolling member 9 is in the form of a needle cage which makes it possible to ensure optimum limitation of friction while while remaining compact, which is advantageous in order to be positioned between a first guide member 43 and a second guide member 44.
- all the rolling members 9 are identical and, more preferably, needle cages.
- the cage 91 makes it possible to precisely position the rolling member 9 while increasing the mechanical resistance. It goes without saying that the bearings 91 could be in the form of balls.
- a rolling member is provided for each second guide member 44 but it goes without saying that only part of the second guide members 44 could be equipped with a rolling member 9.
- a rolling member 9 has been presented in the low position to guide the lower surface 44a of the second guide member 44, but it goes without saying that other positions could be suitable, in particular a high position or a lateral position. .
- each second guide member 44 Preferably, several running gears are provided for each second guide member 44 so as to produce several types of complementary guidance.
- two running gears 9, 9' positioned respectively in the low position and in the high position to allow optimal vertical guidance during the deployment/folding of the second guide member 44.
- An upper and lower guide makes it possible to limit any vertical movement and reduce any friction.
- the second guide member 44 comprises an upper wall 440 in which is formed a second through opening 441 opening onto the first guide member 43.
- the second rolling member 9' is mounted in the second through opening 441.
- the second rolling member 9' is accessible by the operator by removing the second guide member 44 from the first guide member 43. Mounting the second rolling member 9' in the first guide member 43 could be possible but requires removing the circulation plate 4 in the event of maintenance, which is more complex.
- the second through opening 441 is positioned at one end of the second guide member 44, preferably an inner end positioned under the circulation plate 4 of the central frame 40C, so as to support it during its extension.
- the two running gear 9, 9' are mounted at a distance, preferably in the low outer position and in the high inner position as illustrated in figure 8A and 8B so as to support the weight of the right side frame 40D during its extension. It goes without saying that the assembly could be different.
- the structure 3 includes a locking device configured to block a movement of the second guide member 44 relative to the first guide member 43 after adjustment.
- the locking device is in the form of a locking pin.
- the right side frame 40D is initially not deployed and the horizontal crosspiece 45 is adjacent to the central frame 40C.
- an operator manually grasps the horizontal crosspiece 45 and moves it to the right to unfold the second guide members 44.
- the second guide members 44 are driven effortlessly thanks to the rolling members 9 which are integrated into the first guide members 43 which come eliminate all friction. Due to the performance of the rolling members 9, 9', any traditional assistance member is not necessary.
- the second guide members 44 are driven simultaneously and the extension length is adjusted uniformly as shown in figure 10 .
- a floor is then placed on the side frame 40C.
- the horizontal crosspiece 45 of the right side frame 40D be inclined with respect to the second axis Y, in particular by an angle ANG of 45° to 135°, in order to adapt to the constraints of the building wall vertical on which the structure 3 must be fixed.
- the operator manually moves the second guide members 44 in order to adjust their extension length independently.
- this advantageously makes it possible to tilt the horizontal crosspiece 45 according to the desired angle of inclination ANG. Manual movement remains easy due to the presence of running gear 9, 9'.
- the locking device is put in place to eliminate any slippage.
- the structure 3 can then be lifted using a crane and positioned on a vertical construction wall to receive formwork panels whose length is adapted to the length of the structure 3.
- the adjustment of the extension length LE of a side frame 40D, 40G can be adjusted effortlessly by an operator, without tools, by simple manipulation.
- the foldable cantilevered work structure 3 is free of gear assistance member such as in the prior art which made the foldable cantilevered work structure 3 heavier and more complex.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
- Ladders (AREA)
- Agricultural Machines (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
Une structure pliable de travail en encorbellement comprenant un plateau de circulation comportant des moyens de fixation à ladite paroi verticale de construction, le plateau de circulation s'étendant selon sa longueur selon un premier axe (X) et selon sa largeur selon un deuxième axe (Y), le plateau de circulation comportant un châssis central et au moins un châssis latéral monté coulissant, le châssis central comportant au moins un premier organe de guidage (43) configuré pour coulisser avec au moins un deuxième organe de guidage (44) du châssis latéral, la structure comportant au moins un organe de roulement (9, 9') de manière à permettre à un opérateur de déplacer le châssis latéral avec des frottements réduits par rapport au châssis central de manière manuelle et sans outil, la structure pliable de travail en encorbellement étant exempte d'organe d'assistance à engrenage pour déplacer le châssis latéral. A foldable cantilevered work structure comprising a circulation plate comprising means for fixing to said vertical construction wall, the circulation plate extending along its length along a first axis (X) and along its width along a second axis ( Y), the circulation tray comprising a central frame and at least one lateral frame mounted to slide, the central frame comprising at least a first guide member (43) configured to slide with at least a second guide member (44) of the frame side, the structure comprising at least one rolling member (9, 9') so as to allow an operator to move the side frame with reduced friction relative to the central frame manually and without tools, the folding work structure cantilevered being free of gear assistance member to move the side frame.
Description
La présente invention concerne le domaine du bâtiment et, plus particulièrement, une structure pliable de travail en encorbellement configurée pour supporter une banche de coffrage verticale.The present invention relates to the building sector and, more particularly, to a foldable cantilevered work structure configured to support a vertical formwork panel.
En référence à la
La structure 103 comprend un plateau de circulation 104 s'étendant horizontalement et comportant un châssis 140 sur lequel repose un plancher 141. Dans cet exemple, le châssis 140 possède une forme rectangulaire et comporte une pluralité de traverses longitudinales. Le plateau de circulation 104 s'étend selon sa longueur selon un axe X et selon sa largeur selon un axe Y.The
Toujours en référence à la
Le plateau de circulation 104 comporte en outre des organes de fixation à la paroi de construction. De manière classique, les organes de fixation se présentent sous la forme de deux montants articulés 151 chacun à une extrémité avant sur le plateau de circulation 104 autour d'un axe d'articulation sensiblement parallèle au plateau de circulation 104, entre une position pliée de stockage et une position dépliée d'utilisation sensiblement orthogonale au plateau de circulation 104, au moins un bras pliable 152, reliant le plateau de circulation 104 et le montant articulé 151. Lors de son utilisation, la structure 103 peut s'étendre à plusieurs mètres de hauteur pour former des parois de construction de grande hauteur.The
En référence à la
De manière connue, le plateau de circulation 104 comporte des extensions latérales de manière à augmenter sa longueur selon l'axe X de manière paramétrable. A cet effet, on connaît par la demande de
Afin d'éliminer cet inconvénient, il a été proposé par la demande de brevet
Il a été également proposé par la demande de
En pratique, tout système d'assistance augmente de manière importante la masse de la plateforme de travail en encorbellement. De plus, pour activer le système d'assistance, l'opérateur doit utiliser une clé ou une visseuse, ce qui présente un inconvénient.In practice, any assistance system significantly increases the mass of the cantilever work platform. In addition, to activate the assistance system, the operator must use a key or a screwdriver, which has a drawback.
Un des objectifs de la présente invention est de proposer une structure pliable de travail en encorbellement qui élimine au moins certains de ces inconvénients.One of the objectives of the present invention is to provide a foldable cantilevered work structure which eliminates at least some of these drawbacks.
L'invention concerne une structure pliable de travail en encorbellement destinée à être montée sur une paroi verticale de construction et à supporter une banche de coffrage, la structure comprenant un plateau de circulation comportant des moyens de fixation à ladite paroi verticale de construction, le plateau de circulation s'étendant selon sa longueur selon un premier axe et selon sa largeur selon un deuxième axe, le plateau de circulation comportant un châssis central et au moins un châssis latéral monté coulissant par rapport au châssis central selon le premier axe, le châssis central comportant au moins un premier organe de guidage configuré pour coulisser avec au moins un deuxième organe de guidage du châssis latéral.The invention relates to a foldable cantilevered work structure intended to be mounted on a vertical construction wall and to support a formwork panel, the structure comprising a circulation plate comprising means of attachment to said vertical construction wall, the plate circulation extending along its length along a first axis and along its width along a second axis, the circulation plate comprising a central frame and at least one side frame mounted to slide relative to the central frame along the first axis, the central frame comprising at least one first guide member configured to slide with at least one second guide member of the side frame.
La structure est remarquable en ce qu'elle comporte au moins un organe de roulement positionné à l'interface entre le deuxième organe de guidage et le premier organe de guidage de manière à permettre à un opérateur de déplacer le châssis latéral avec des frottements réduits par rapport au châssis central de manière manuelle et sans outil, la structure pliable de travail en encorbellement étant exempte d'organe d'assistance à engrenage pour déplacer le châssis latéral.The structure is remarkable in that it comprises at least one running member positioned at the interface between the second guide member and the first guide member so as to allow an operator to move the side frame with reduced friction by relative to the central frame manually and without tools, the foldable cantilevered working structure being free of gear assistance member for moving the side frame.
Grâce à l'invention, un opérateur peut déplacer le châssis latéral avec des frottements réduits par rapport au châssis central. De manière avantageuse, le déplacement est réalisé sans outil, en particulier, sans organe d'assistance à engrenage. L'invention prend le contre-pied d'un préjugé qui existait dans l'art antérieur et qui imposait de prévoir un organe d'assistance à engrenage pour réaliser le déplacement d'un châssis latéral dont la masse peut dépasser 100 kg. Selon l'invention, seuls des organes de roulement sont prévus pour déplacer le châssis latéral par rapport au châssis central, ce qui permet de réduire la masse ainsi que le coût d'une structure pliable de travail en encorbellement par comparaison à une structure pliable de travail en encorbellement comportant un organe d'assistance à engrenage.Thanks to the invention, an operator can move the side frame with reduced friction relative to the central frame. Advantageously, the movement is carried out without tools, in particular without a gear assistance member. The invention takes the opposite view of a prejudice which existed in the prior art and which required the provision of a gear-driven assistance member to carry out the movement of a side frame whose mass may exceed 100 kg. According to the invention, only rolling members are provided to move the side frame relative to the central frame, which makes it possible to reduce the mass as well as the cost of a foldable cantilevered work structure compared to a foldable structure of cantilevered work comprising a geared assistance member.
La manipulation manuelle et sans outil est très avantageuse étant donné que l'opérateur peut modifier la longueur à tout moment et sans délai. En outre, le réglage peut être réalisé de manière précise par l'opérateur qui peut manipuler le châssis latéral comme un tiroir.The manual and tool-free handling is very advantageous since the operator can change the length at any time and without delay. In addition, the adjustment can be carried out precisely by the operator who can manipulate the side frame like a drawer.
De préférence, la structure pliable de travail en encorbellement est exempte d'organe d'assistance pneumatique ou hydraulique. La structure est ainsi plus légère et économique. De préférence encore, la structure pliable de travail en encorbellement est exempte d'organe d'assistance comportant des bielles.Preferably, the foldable cantilevered work structure is free of any pneumatic or hydraulic assistance device. The structure is thus lighter and more economical. Preferably again, the foldable cantilevered work structure is free of assistance members comprising connecting rods.
De préférence, au moins un organe de roulement est configuré pour guider une surface inférieure du deuxième organe de guidage. Un guidage d'une surface inférieure permet d'éliminer de manière importante les frottements liés au poids du châssis latéral sous l'effet de la gravité. La pénibilité de l'opérateur est ainsi réduite. Par guidage d'une surface inférieure, on entend un guidage au niveau d'une interface inférieure, l'organe de roulement pouvant appartenir au premier organe de guidage ou au deuxième organe de guidage.Preferably, at least one rolling member is configured to guide a bottom surface of the second guide member. A guide of a lower surface makes it possible to significantly eliminate the friction associated with the weight of the side frame under the effect of gravity. The difficulty of the operator is thus reduced. By guiding a lower surface is meant guiding at the level of a lower interface, the rolling member possibly belonging to the first guiding member or to the second guiding member.
De préférence, au moins un organe de roulement est configuré pour guider une surface supérieure du deuxième organe de guidage. Le guidage d'une surface supérieure permet de guider toute inclinaison du deuxième organe de guidage du fait du porte-à-faux afin de limiter les frottements en partie basse et en partie haute. Par guidage d'une surface supérieure, on entend un guidage au niveau d'une interface supérieure, l'organe de roulement pouvant appartenir au premier organe de guidage ou au deuxième organe de guidage.Preferably, at least one rolling member is configured to guide an upper surface of the second guide member. Guiding an upper surface makes it possible to guide any inclination of the second guide member due to the overhang in order to limit friction in the lower part and in the upper part. By guiding an upper surface is meant guiding at an upper interface, the rolling member possibly belonging to the first guiding member or to the second guiding member.
De manière préférée, au moins un premier organe de roulement est configuré pour guider une surface inférieure du deuxième organe de guidage, au moins un deuxième organe de roulement est configuré pour guider une surface supérieure du deuxième organe de guidage. De préférence, le premier organe de roulement est situé au niveau du châssis latéral tandis que le deuxième organe de roulement est situé au niveau du châssis central. Ainsi, l'inclinaison du deuxième organe de guidage, lors de son extension, est guidée de manière efficace pour compenser les effets du porte-à-faux.Preferably, at least one first rolling member is configured to guide a lower surface of the second guiding member, at least one second rolling member is configured to guide an upper surface of the second guiding member. Preferably, the first rolling member is located at the level of the side frame while the second rolling member is located at the level of the central frame. Thus, the inclination of the second guide member, during its extension, is guided effectively to compensate for the effects of the cantilever.
Selon un aspect préféré, au moins un organe de roulement comporte au moins une cage avec une pluralité de roulements, de préférence, une cage à aiguilles. De préférence, chaque organe de roulement se présente sous la forme d'une cage à aiguilles. L'utilisation d'une pluralité de roulements est avantageuse pour réduire de manière optimale les frottements. De préférence, chaque roulement se présente sous la forme d'une aiguille ou d'une bille. En outre, une maintenance d'une cage avec une pluralité de roulements est aisée, la cage protégeant avantageusement les roulements contre les projections de béton. Une cage à aiguilles est très avantageuse dans le contexte d'une structure de travail en encorbellement étant donné qu'elle possède un encombrement réduit, ce qui permet son positionnement à l'interface entre un deuxième organe de guidage et un premier organe de guidage.According to a preferred aspect, at least one rolling member comprises at least one cage with a plurality of bearings, preferably a needle cage. Preferably, each rolling member is in the form of a needle cage. The use of a plurality of bearings is advantageous to optimally reduce friction. Preferably, each bearing is in the form of a needle or a ball. In addition, maintenance of a cage with a plurality of bearings is easy, the cage advantageously protecting the bearings against concrete projections. A needle cage is very advantageous in the context of a cantilevered working structure given that it has a small footprint, which allows its positioning at the interface between a second guide member and a first guide member.
De préférence, au moins un organe de roulement est solidaire du premier organe de guidage. Cela permet avantageusement de guider le deuxième organe de guidage lorsque celui-ci coulisse avec le premier organe de guidage, le positionnement de l'organe de roulement étant précis pour une réduction optimale des frottements.Preferably, at least one rolling member is integral with the first guide member. This advantageously makes it possible to guide the second guide member when the latter slides with the first guide member, the positioning of the rolling member being precise for optimum reduction of friction.
De préférence, au moins un organe de roulement est solidaire du deuxième organe de guidage, en particulier, en position haute.Preferably, at least one rolling member is integral with the second guide member, in particular, in the high position.
De manière préférée, le premier organe de guidage comportant au moins une paroi inférieure dans laquelle est formée une ouverture traversante débouchant sur le deuxième organe de guidage, l'organe de roulement est monté dans l'ouverture traversante, de préférence, depuis l'extérieur du premier organe de guidage. L'organe de roulement est intégré au premier organe de guidage, ce qui limite l'encombrement. De manière avantageuse, un montage depuis l'extérieur de l'organe de roulement permet de faciliter la maintenance de l'organe de roulement. Celui-ci peut être remplacé de manière pratique par un opérateur.Preferably, the first guide member comprising at least one lower wall in which is formed a through opening leading to the second guide member, the rolling member is mounted in the through opening, preferably from the outside of the first guide member. The rolling member is integrated into the first guide member, which limits the size. Advantageously, mounting from the outside of the rolling member facilitates maintenance of the rolling member. This can be conveniently replaced by an operator.
De préférence, la structure comporte au moins un deuxième organe de roulement positionné à l'interface entre ledit deuxième organe de guidage et ledit premier organe de guidage.Preferably, the structure comprises at least one second rolling member positioned at the interface between said second guide member and said first guide member.
De manière préférée, le deuxième organe de guidage comportant au moins une paroi supérieure dans laquelle est formée une deuxième ouverture traversante débouchant sur le premier organe de guidage, un deuxième organe de roulement est monté dans la deuxième ouverture traversante. De manière préférée, la deuxième ouverture traversante est positionnée à une extrémité du deuxième organe de guidage de manière à le supporter lors de son extension en porte-à-faux.Preferably, the second guide member comprising at least one upper wall in which is formed a second through opening leading to the first guide member, a second rolling member is mounted in the second through opening. Preferably, the second through-opening is positioned at one end of the second guide member so as to support it during its cantilever extension.
De préférence, le premier organe de guidage se présente sous la forme d'un profilé creux dans lequel coulisse le deuxième organe de guidage.Preferably, the first guide member is in the form of a hollow section in which the second guide member slides.
Selon un aspect préféré, le châssis central comportant au moins deux premiers organes de guidage configurés pour coulisser respectivement avec au moins deux deuxièmes organes de guidage du châssis latéral. Un tel guidage réparti permet de limiter et de répartir les efforts dans chaque deuxième organe de guidage.According to a preferred aspect, the central frame comprising at least two first guide members configured to slide respectively with at least two second guide members of the side frame. Such a distributed guide makes it possible to limit and distribute the forces in each second guide member.
De préférence, au moins un organe de roulement est positionné à l'interface entre chaque deuxième organe de guidage et le premier organe de guidage avec lequel il coulisse. La présence d'un organe de roulement à chaque interface permet de réduire les frottements de manière répartie, ce qui est avantageux.Preferably, at least one rolling member is positioned at the interface between each second guide member and the first guide member with which it slides. The presence of a rolling member at each interface makes it possible to reduce friction in a distributed manner, which is advantageous.
L'invention concerne également un procédé de déplacement d'un châssis latéral d'une structure telle que présentée précédemment, le procédé de réglage comportant une étape de déplacement manuel sans outil par un opérateur du châssis latéral, l'organe de roulement permettant un déplacement du deuxième organe de guidage du châssis latéral avec des frottements réduits par rapport au premier organe de guidage du châssis central.The invention also relates to a method for moving a side frame of a structure as presented above, the adjustment method comprising a step of manual movement without tools by an operator of the side frame, the rolling member allowing movement of the second guide member of the side frame with reduced friction relative to the first guide member of the central frame.
L'invention sera mieux comprise à la lecture de la description qui va suivre, donnée uniquement à titre d'exemple, et se référant aux dessins annexés donnés à titre d'exemples non limitatifs, dans lesquels des références identiques sont données à des objets semblables et sur lesquels :
- [
Fig. 1 ] est une représentation schématique en perspective d'une structure pliable de travail en encorbellement selon l'art antérieur ; - [
Fig. 2 ] est une représentation schématique en perspective d'une structure pliable de travail en encorbellement selon l'invention ; - [
Fig. 3 ] est une représentation schématique en perspective de la structure de lafigure 2 sans le plancher central ; - [
Fig. 4 ] est une représentation schématique rapprochée de dessous du châssis latéral droit ; - [
Fig. 5 ] est une représentation schématique rapprochée d'un organe de roulement ; - [
Fig. 6 ] est une représentation schématique rapprochée des roulements de l'organe de roulement ; - [
Fig. 7 ] est une vue en coupe avec un organe de roulement en position basse ; - [
Fig. 8A ] est une vue en coupe avec un organe de roulement en position basse et un organe de roulement en position haute ; - [
Fig. 8B ] est une vue en perspective des organes de roulement, le premier organe de guidage n'étant pas représenté ; - [
Fig. 9 ] - [
Fig. 10 ] et - [
Fig. 11 ] sont des représentations schématiques d'un châssis central et d'un châssis latéral selon plusieurs configurations.
- [
Fig. 1 ] is a schematic representation in perspective of a foldable cantilevered work structure according to the prior art; - [
Fig. 2 ] is a schematic representation in perspective of a foldable cantilevered work structure according to the invention; - [
Fig. 3 ] is a perspective schematic representation of the structure of thefigure 2 without the central floor; - [
Fig. 4 ] is a close-up schematic representation of the right side frame from below; - [
Fig. 5 ] is a close-up schematic representation of a running gear; - [
Fig. 6 ] is a close-up schematic representation of the bearings of the running gear; - [
Fig. 7 ] is a sectional view with a running gear in the low position; - [
Fig. 8A ] is a sectional view with a rolling member in the low position and a rolling member in the high position; - [
Fig. 8B ] is a perspective view of the running gear, the first guide member not being shown; - [
Fig. 9 ] - [
Fig. 10 ] and - [
Fig. 11 ] are schematic representations of a central frame and a side frame in several configurations.
Il faut noter que les figures exposent l'invention de manière détaillée pour mettre en œuvre l'invention, lesdites figures pouvant bien entendu servir à mieux définir l'invention le cas échéant.It should be noted that the figures expose the invention in detail to implement the invention, said figures can of course be used to better define the invention if necessary.
En référence à la
Comme présenté précédemment, la structure pliable de travail en encorbellement 3 est configurée pour être montée sur une paroi verticale de construction d'un bâtiment tel qu'un immeuble à l'aide d'attaches de fixation montées dans la paroi verticale de construction. La structure 3 comprend un plateau de circulation 4 comportant au moins un bord avant 4A agencé pour s'étendre à proximité de ladite paroi et au moins un bord arrière 4B opposé audit bord avant 4A. Dans cet exemple, du fait de sa forme rectangulaire, le plateau de circulation 4 comporte un seul bord avant 4A et un seul bord arrière 4B. Néanmoins, il va de soi que le plateau de circulation 4 pourrait comprendre plus d'un bord avant 4A et plus d'un bord arrière 4B. Comme illustré à la
Le plateau de circulation 4 comporte en outre des organes de fixation à la paroi verticale de construction. De manière classique, les organes de fixation se présentent sous la forme de deux montants articulés 51 chacun à une extrémité avant sur le plateau de circulation 4 autour d'un axe d'articulation sensiblement parallèle au plateau de circulation 4, entre une position pliée de stockage et une position dépliée d'utilisation sensiblement orthogonale au plateau de circulation 4, au moins un bras pliable 52, reliant le plateau de circulation 4 et le montant articulé 51. Lors de son utilisation, la structure 3 peut s'étendre à plusieurs mètres de hauteur pour former des parois verticales de construction de grande hauteur. Afin d'empêcher la chute d'opérateurs circulant sur le plateau de circulation 4, la structure 3 comporte classiquement au moins un auvent de protection arrière 61 et des garde-corps latéraux 62.The
Comme illustré à la
Le châssis central 40C comporte plusieurs premiers organes de guidage 43, s'étendant selon le premier axe X, et plusieurs traverses horizontales 42, s'étendant selon le deuxième axe Y de manière à former une structure de support pour recevoir un plancher central 41 (voir
Dans cet exemple, les châssis latéraux 40G, 40D sont symétriques. Aussi, par souci de clarté et de concision, seul le châssis latéral droite 40D va être présenté par la suite. Le châssis latéral droite 40D comporte plusieurs deuxièmes organes de guidage 44, s'étendant selon le premier axe X, et une unique traverse horizontale 45, s'étendant selon le deuxième axe Y de manière à former une structure de support pour recevoir un plancher latéral (non représenté). Il va de soi que les nombres de deuxièmes organes de guidage 44 et de traverses horizontales 45 pourraient être différents. Dans cet exemple, la traverse horizontale 45 forme une extrémité du châssis latéral droit 40D.In this example, side frames 40G, 40R are symmetrical. Also, for the sake of clarity and conciseness, only the 40D right side frame will be presented below. The
Dans cette forme de réalisation, les deuxièmes organes de guidage 44 sont reliés à la traverse horizontale 45 de manière mobile afin de permettre à la traverse horizontale 45 de s'incliner par rapport au deuxième axe Y, en particulier, lorsque les longueurs d'extension des deuxièmes organes de guidage 44 sont différentes (
Comme illustré à la
Comme illustré à la
De manière avantageuse, chaque deuxième organe de guidage 44 peut se déplacer dans le premier organe de guidage 43 de manière indépendante aux autres deuxièmes organes de guidage 44. Ainsi, la longueur d'extension de chaque deuxième organe de guidage 44 peut être réglée de manière indépendante comme illustré à la
Afin de limiter la pénibilité, le châssis central 40C comporte des organes de roulement 9 configurés pour permettre un coulissement sans effort des deuxièmes organes de guidage 44 par rapports aux premiers organes de guidage 43.In order to limit the arduousness, the
Dans ce premier exemple de mise en oeuvre, en référence aux
De manière préférée, en référence à la
Dans cet exemple, l'organe de roulement 9 est fixé à la paroi inférieure 430 du premier organe de guidage 43. De préférence, la paroi inférieure 430 du premier organe de guidage 43 comporte une ouverture traversante 431 dans laquelle est monté l'organe de roulement 9. Cela permet de monter l'organe de roulement 9 depuis l'extérieur afin de pouvoir déboucher dans la cavité intérieure du premier organe de guidage 43 et ainsi entrer en contact avec la surface inférieure 44a du deuxième organe de guidage 44. L'organe de roulement 9 est ainsi intégré au guidage mais demeure aisément accessible, en particulier, pour sa maintenance.In this example, the rolling
L'organe de roulement 9 comporte une pluralité de roulements 91 montés dans une cage 90. De manière préférée, l'organe de roulement 9 se présente sous la forme d'une cage à aiguilles qui permet d'assurer une limitation optimale des frottements tout en demeurant compact, ce qui est avantageux afin d'être positionné entre un premier organe de guidage 43 et un deuxième organe de guidage 44. De préférence, tous les organes de roulement 9 sont identiques et, de préférence encore, des cages à aiguilles. De manière préférée, la cage 91 permet de positionner de manière précise l'organe de roulement 9 tout en augmentant la résistance mécanique. Il va de soi que les roulements 91 pourraient se présenter sous la forme de billes.The rolling
Dans ce premier exemple de mise en œuvre, un organe de roulement est prévu pour chaque deuxième organe de guidage 44 mais il va de soi que seule une partie des deuxièmes organes de guidage 44 pourrait être équipée d'un organe de roulement 9.In this first example of implementation, a rolling member is provided for each
De plus, il a été présenté un organe de roulement 9 en position basse pour guider la surface inférieure 44a du deuxième organe de guidage 44 mais il va de soi que d'autres positions pourraient convenir, en particulier, une position haute ou une position latérale.In addition, a rolling
De préférence, plusieurs organes de roulement sont prévus pour chaque deuxième organe de guidage 44 de manière à réaliser plusieurs types de guidage complémentaires. En référence aux
Dans cet exemple, le deuxième organe de guidage 44 comporte une paroi supérieure 440 dans laquelle est formée une deuxième ouverture traversante 441 débouchant sur le premier organe de guidage 43. Le deuxième organe de roulement 9' est monté dans la deuxième ouverture traversante 441. Le deuxième organe de roulement 9' est accessible par l'opérateur en retirant le deuxième organe de guidage 44 du premier organe de guidage 43. Un montage du deuxième organe de roulement 9' dans le premier organe de guidage 43 pourrait être possible mais impose de retirer le plateau de circulation 4 en cas de maintenance, ce qui est plus complexe.In this example, the
De manière préférée, la deuxième ouverture traversante 441 est positionnée à une extrémité du deuxième organe de guidage 44, de préférence une extrémité intérieure positionnée sous le plateau de circulation 4 du châssis central 40C, de manière à le supporter lors de son extension.Preferably, the second through opening 441 is positioned at one end of the
Les deux organes de roulement 9, 9' sont montés à distance, de préférence, en position extérieure basse et en position intérieure haute comme illustré aux
Selon un aspect préféré, la structure 3 comporte un dispositif de verrouillage configuré pour bloquer un déplacement du deuxième organe de guidage 44 par rapport au premier organe de guidage 43 après réglage. De manière préférée, le dispositif de verrouillage se présente sous la forme d'une broche de verrouillage.According to a preferred aspect, the
Il va dorénavant être présenté un procédé de réglage de la longueur d'extension du châssis latéral droit 40D de la structure 3. L'opération de réglage est réalisée au sol.A method for adjusting the extension length of the
Dans cet exemple, comme illustré à la
Les deuxièmes organes de guidage 44 sont entrainés sans effort grâce aux organes de roulement 9 qui sont intégrés dans les premiers organes de guidage 43 qui viennent éliminer tous les frottements. Du fait de la performance des organes de roulement 9, 9', tout organe d'assistance traditionnel n'est pas nécessaire.The
Les deuxièmes organes de guidage 44 sont entrainés de manière simultanée et la longueur d'extension est réglée de manière uniforme comme illustré à la
Selon un autre exemple de mise en œuvre, en référence à la
Une fois le réglage de la longueur d'extension terminé, le dispositif de verrouillage est mis en place pour éliminer tout coulissement. La structure 3 peut ensuite être levée à l'aide d'une grue et positionnée sur une paroi verticale de construction pour recevoir des banches de coffrage dont la longueur est adaptée à la longueur de la structure 3.Once the extension length adjustment is complete, the locking device is put in place to eliminate any slippage. The
De manière avantageuse, du fait de la présence des organes de roulement 9, 9', le réglage de la longueur d'extension LE d'un châssis latéral 40D, 40G peut être réglé sans effort par un opérateur, sans outil, par simple manipulation. De manière avantageuse, la structure pliable de travail en encorbellement 3 est exempte d'organe d'assistance à engrenage tel que dans l'art antérieur qui alourdissait et complexifiait la structure pliable de travail en encorbellement 3.Advantageously, due to the presence of rolling
Claims (9)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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FR2011206A FR3115805B1 (en) | 2020-11-02 | 2020-11-02 | Folding cantilever working structure for manually adjusting the extension length of a side frame |
Publications (2)
Publication Number | Publication Date |
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EP3992394A1 true EP3992394A1 (en) | 2022-05-04 |
EP3992394B1 EP3992394B1 (en) | 2023-09-06 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP21205383.9A Active EP3992394B1 (en) | 2020-11-02 | 2021-10-28 | Foldable structure for corbel working for manual adjustment of the extension length of a lateral frame |
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EP (1) | EP3992394B1 (en) |
FR (1) | FR3115805B1 (en) |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001023687A1 (en) * | 1999-09-29 | 2001-04-05 | Ghantous, Bassam | Expandable platform |
WO2002097218A2 (en) * | 2001-05-25 | 2002-12-05 | Dorman Long Access Systems Ltd | Rolling platform |
FR2906286A1 (en) | 2006-09-21 | 2008-03-28 | Sateco Sa | Foldable work structure for use in e.g. building, has support lug integrated to post at free end of post and projecting from end, where lug is shifted relative to plane orthogonal to plate passing via axle in opening position of post |
EP2025832A1 (en) * | 2007-08-10 | 2009-02-18 | Alpine Bau Deutschland AG | Raised platform which can be adjusted in length, in particular for climbing scaffolds |
FR2939822A1 (en) * | 2008-12-15 | 2010-06-18 | Paul Marie Bernard | Lateral extension equipment for form panel carrying platform utilized to construct concrete wall of building, has bar whose hinge ensures connection with edge section, while hinges of other bars are assembled with possibilities of sliding |
FR2944041A1 (en) | 2009-04-07 | 2010-10-08 | Outinord St Amand | Corbel platform for use on barrier wall of concrete construction work of building, has floor including extension unit for stretching floor on lateral sides during spacing lateral parts of framework |
FR2984384A1 (en) | 2011-12-15 | 2013-06-21 | Hussor | Adjustable cantilevered working platform for intervening structure on tall construction site, has adjusting device with rod that is positioned along length of platform, where rod allows movement of extension floor relative to main floor |
-
2020
- 2020-11-02 FR FR2011206A patent/FR3115805B1/en active Active
-
2021
- 2021-10-28 EP EP21205383.9A patent/EP3992394B1/en active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001023687A1 (en) * | 1999-09-29 | 2001-04-05 | Ghantous, Bassam | Expandable platform |
WO2002097218A2 (en) * | 2001-05-25 | 2002-12-05 | Dorman Long Access Systems Ltd | Rolling platform |
FR2906286A1 (en) | 2006-09-21 | 2008-03-28 | Sateco Sa | Foldable work structure for use in e.g. building, has support lug integrated to post at free end of post and projecting from end, where lug is shifted relative to plane orthogonal to plate passing via axle in opening position of post |
EP2025832A1 (en) * | 2007-08-10 | 2009-02-18 | Alpine Bau Deutschland AG | Raised platform which can be adjusted in length, in particular for climbing scaffolds |
FR2939822A1 (en) * | 2008-12-15 | 2010-06-18 | Paul Marie Bernard | Lateral extension equipment for form panel carrying platform utilized to construct concrete wall of building, has bar whose hinge ensures connection with edge section, while hinges of other bars are assembled with possibilities of sliding |
FR2944041A1 (en) | 2009-04-07 | 2010-10-08 | Outinord St Amand | Corbel platform for use on barrier wall of concrete construction work of building, has floor including extension unit for stretching floor on lateral sides during spacing lateral parts of framework |
FR2984384A1 (en) | 2011-12-15 | 2013-06-21 | Hussor | Adjustable cantilevered working platform for intervening structure on tall construction site, has adjusting device with rod that is positioned along length of platform, where rod allows movement of extension floor relative to main floor |
Also Published As
Publication number | Publication date |
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FR3115805B1 (en) | 2022-11-25 |
FR3115805A1 (en) | 2022-05-06 |
EP3992394B1 (en) | 2023-09-06 |
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