EP0616098A1 - Scaffolding platform element - Google Patents

Scaffolding platform element Download PDF

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Publication number
EP0616098A1
EP0616098A1 EP94400487A EP94400487A EP0616098A1 EP 0616098 A1 EP0616098 A1 EP 0616098A1 EP 94400487 A EP94400487 A EP 94400487A EP 94400487 A EP94400487 A EP 94400487A EP 0616098 A1 EP0616098 A1 EP 0616098A1
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EP
European Patent Office
Prior art keywords
plate
scaffolding
floor element
latch
elements
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Withdrawn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
EP94400487A
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German (de)
French (fr)
Inventor
Jean-Pierre Sarrazy
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ENTREPOSE-MONTALEV
Original Assignee
ENTREPOSE-MONTALEV
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Filing date
Publication date
Application filed by ENTREPOSE-MONTALEV filed Critical ENTREPOSE-MONTALEV
Publication of EP0616098A1 publication Critical patent/EP0616098A1/en
Withdrawn legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G7/00—Connections between parts of the scaffold
    • E04G7/30—Scaffolding bars or members with non-detachably fixed coupling elements
    • E04G7/302—Scaffolding bars or members with non-detachably fixed coupling elements for connecting crossing or intersecting bars or members
    • E04G7/303—Scaffolding bars or members with non-detachably fixed coupling elements for connecting crossing or intersecting bars or members the added coupling elements are only fixed at one of the bars or members to connect
    • E04G7/305—Scaffolding bars or members with non-detachably fixed coupling elements for connecting crossing or intersecting bars or members the added coupling elements are only fixed at one of the bars or members to connect without tying means for connecting the bars or members
    • 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

Definitions

  • the present invention relates to a floor element for scaffolding.
  • the invention relates to an element having the general shape of a plate which can be placed and fixed on horizontal elements of a scaffolding assembly in order to allow the movement of workers working on a site where is mounted this scaffolding.
  • FIG. 1 There is shown schematically in Figure 1 attached a part of a scaffolding consisting of vertical elements such as 10 and horizontal elements 12 connecting together the vertical elements 10. There is also shown a part of a floor 14 which is constituted by sets of metal plates or profiles 16 which are arranged side by side in line with each other. Each floor element 16 has at its ends means 18 for fixing the plates 16 to the horizontal scaffolding elements 12.
  • the fastening systems must, on the one hand, avoid the lifting of the floor elements, for example under the effect of a strong wind, and on the other hand, they must avoid the spillage of the floor element, c 'is to say the tilting of the floor element and whatever the place of this element where the worker is supported. It is also desirable that the fastening system has active safety characteristics, that is to say that the disassembly of the floor element relative to the scaffolding elements can only be obtained by a voluntary action of that who does this disassembly.
  • the floor element for scaffolding comprising an elongated plate provided at each of its ends with means of fastening on horizontal scaffolding elements extending perpendicular to the length of said floor element, is characterized in that each securing means comprises at least two sets forming hooks, projecting out of the corresponding end of said plate and able to rest on a horizontal scaffolding element, said two hooks being spaced along the width of said plate, each hook assembly having an extension resting on one end of the plate of an adjacent floor element in the direction of the length of the floor element, the hook assembly of a first end of the plate being offset along the width of the plate relative to the hook assemblies of the second end d 'a distance d at least equal to the width of a hook element.
  • each securing means further comprises a retractable locking assembly comprising at least one lock pivotally mounted relative to the end of said plate and one end of which protrudes from the end of said plate in view of the hook elements, said latch being held in its locking position by counterweight means, the end of said latch being able to be moved away from its locking position by the scaffolding element during the positioning of said floor on said scaffolding element.
  • each end of a plate is locked on the horizontal scaffolding elements by the cooperation of a hook and a latch which is held in its locking position by the effect of the counterweight, which avoids any risk of spillage under the effect of a load applied to the plate.
  • the lock is pivotally mounted on a part forming a lever, a first end of which is articulated relative to said end of the plate and the other end of which is secured to the means forming a counterweight.
  • each retractable locking assembly comprises two identical locking elements mounted at each end of the width of the end of a plate, each locking element comprising a latch, one end of which is articulated on a part forming a lever, said part forming a lever having a first end secured to an axis of rotation common to the two locking elements and a second end secured to a rod common to the two locking elements forming a counterweight and a control handle.
  • FIG. 2 we will describe the assembly of a floor element according to the invention.
  • This consists on the one hand of an elongated plate 32 or more precisely preferably by a profile comprising an upper plate 34 and two lateral edges, only the edge 36 being visible.
  • the dimensions of the rim 36 and the choice of the thickness of the profile naturally depend on the total dimensions of the floor element as well as the loads to be supported.
  • the plate 32 is provided with fastening means respectively referenced 38 and 40.
  • Each fastening means 38 or 40 comprises on the one hand hooks, bearing the general reference 42, which are intended to come to bear on horizontal scaffolding elements such as 44 and a locking assembly bearing the general reference 46 which, after the installation of the floor element on the scaffolding element 44, ensures the joining of the floor element on the scaffolding.
  • the hook 42 and the locking system 46 are mounted on a U-shaped part 48 which is welded to the ends of the plate 32 in the direction of the width of the latter.
  • the hooks, such as 42 comprise a fixing part 50 welded to the U-shaped part 48 a spout 52 ensuring the hook function and a horizontal extension 54 which extends beyond the spout 52.
  • the lower face 54a of the extension is arranged substantially in the same horizontal plane as the upper face of the plate 34.
  • FIG. 3 there is shown the plate 32a of a first floor element 30a and part of the plates 32b and 32c of floor elements 30b and 30c aligned with Element 30a.
  • the first end of the plate 32a is provided with hooks 42 1 and 42 2 while its second end is provided with hooks 42 3 and 42 4 .
  • the hooks of one end 42 1 and 42 2 are offset relative to the hooks 42 3 and 42 4 of the other end. This offset is equal to d and is slightly greater than the width of a hook element. This offset d allows the hooks to come to bear directly on the scaffolding elements 44, 44 '.
  • FIG. 4 illustrates the positioning of the floor elements 32a and 32b on a scaffolding element 44. Due to the mutual overlap of the floor elements, due to the presence of the extensions 54, the positioning of these elements floor is made by lifting the ends thereof and lowering them simultaneously, which allows the final positioning of the two floor elements on the scaffolding element 44, the different extensions 54 thus being nested.
  • the locking element 46 is essentially constituted by two parts 70 and 72 which are preferably identical and articulated with respect to each other.
  • the part 70 which will later be called a lever, is fixed at a first end 74 to a rod 76 whose axis is orthogonal to the plane of the part 70.
  • the part 70 is integral with a rod 80 parallel to the rod 76 and which constitutes a counterweight.
  • the rod 76 which forms a pivot axis is engaged at its ends in two housings such as 82 integral with the U-shaped part 48.
  • the part 70 is provided with an orifice 84 in which is engaged a lug d hinge 86. This lug is also engaged in an orifice 87 formed near the first end 88 of the part 72.
  • the second end of the part 72 which is referenced 90 is provided with an orifice 92 in which one can engage removable lug 94.
  • each end of the plate is provided with two identical locking systems, one being referenced 46 and the other 46 '. These two locking systems are interconnected by the rods 76 and 80.
  • the U-shaped pieces 48 have two slots, such as 100, to allow the passage of the pieces 72 so that their ends 90 protrude out of the plate elements.
  • the ends 90 of the parts 72 forming a lock are arranged opposite the element 42 forming a hook.
  • the bar 80 forming a counterweight also constitutes the equivalent of a handle which can be grasped by the worker responsible for removing the floor elements, as will be explained later.
  • FIG. 6 shows locking devices 46 of two adjacent floor elements before their engagement on a horizontal scaffolding element 44. It can be seen that, in this position, the ends 90 of the parts 72 protrude completely from the ends of the elements of floor.
  • the scaffolding element 44 causes the withdrawal of the ends 90 of the locking pieces 72 by pivoting the piece 70 around of its axis 76 and pivoting of the part 72 relative to the part 70 around the axes 86.
  • the two floor elements can be lowered until the scaffolding element 44 is engaged in the elements forming a hook 42. After this engagement, the ends 90 of the parts forming a lock 72 return to their initial position under the effect of the counterweights 80. This is what is shown in FIG. 8 for position 1 of the locking elements.
  • the withdrawal of the ends 90 of the locks 72 is limited by the presence of the lugs 94 which cooperate with the edges of the slots 100 formed in the U-shaped pieces 46.
  • the lugs 94 are removable because the initial installation of the locking system 46 is done without the lugs, these being set up only later.
  • the locking system 46 is put in place after all of the rest of the floor element has been completed. For mounting the locking system, the lugs 94 are not in place.
  • the locking system is presented inclined with respect to the plate 34.
  • One end of the rod 76 is engaged in one of the housings 82 and fully depressed up to the free clearance limited by the contact between the part 70 and the corresponding housing 82, then the rod 76 is straightened and inserted into the second housing 82.
  • the rod 76 is positioned so that the ends 90 of the latches 72 protrude out of the slots 100 formed in the U-shaped part 48.
  • the pins 94 are then put in place in the orifices 92 and secured to the parts 72.
  • the floor element is then completely assembled.
  • the scaffolding element according to the invention makes it possible to solve effectively and at a reduced cost the problems of lifting and spillage.
  • the installation and removal of the floor elements on or off the scaffolding are very simple to implement. Indeed, the establishment is carried out without any particular operation while the removal is carried out conveniently thanks to the presence of the handles which are easily accessible from below the floor elements.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Vehicle Step Arrangements And Article Storage (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)

Abstract

The invention relates to a scaffolding platform element. The platform element comprises an elongate plate (32) equipped, at each of its ends, with means (40) for securing on scaffolding elements (44). The securing means comprise two hooks (42) each equipped with an extension (54) which bears on the adjacent platform element. Each securing means comprises, moreover, a locking system (46) which is mounted so as to pivot. The locking end (90) is held in a locking position by means of a counterweight (80) which also forms the handle in order to permit detachment of the scaffolding element from the platform element.

Description

La présente invention a pour objet un élément de plancher pour échafaudage.The present invention relates to a floor element for scaffolding.

De façon plus précise, l'invention concerne un élément ayant la forme générale d'une plaque qui peut être posée et fixée sur des éléments horizontaux d'un ensemble formant échafaudage en vue de permettre la circulation des ouvriers travaillant sur un chantier où est monté cet échafaudage.More specifically, the invention relates to an element having the general shape of a plate which can be placed and fixed on horizontal elements of a scaffolding assembly in order to allow the movement of workers working on a site where is mounted this scaffolding.

On a représenté schématiquement sur la figure 1 annexée une partie d'un échafaudage constitué par des éléments verticaux tels que 10 et des éléments horizontaux 12 reliant entre eux les éléments verticaux 10. On a également représenté une partie d'un plancher 14 qui est constitué par des ensembles de plaques ou de profilés métalliques 16 qui sont disposés côte à côte dans le prolongement les uns des autres. Chaque élément de plancher 16 comporte à ses extrémités des moyens 18 de fixation des plaques 16 sur les éléments d'échafaudage horizontaux 12.There is shown schematically in Figure 1 attached a part of a scaffolding consisting of vertical elements such as 10 and horizontal elements 12 connecting together the vertical elements 10. There is also shown a part of a floor 14 which is constituted by sets of metal plates or profiles 16 which are arranged side by side in line with each other. Each floor element 16 has at its ends means 18 for fixing the plates 16 to the horizontal scaffolding elements 12.

Pour satisfaire aux normes en vigueur et pour assurer la sécurité des ouvriers amenés à travailler sur ces planchers, la solidarisation des éléments de plancher doit satisfaire à deux conditions. Les systèmes de solidarisation doivent, d'une part, éviter le soulèvement des éléments de plancher, par exemple sous l'effet d'un vent violent, et d'autre part, ils doivent éviter le déversement de l'élément de plancher, c'est-à-dire le basculement de l'élément de plancher et ce quel que soit l'endroit de cet élément où l'ouvrier est en appui. Il est également souhaitable que le système de solidarisation présente des caractéristiques de sécurité active, c'est-à-dire que le démontage de l'élément de plancher par rapport aux éléments d'échafaudage ne puisse être obtenu que par une action volontaire de celui qui procède à ce démontage.To meet the standards in force and to ensure the safety of workers brought to work on these floors, the joining of the floor elements must satisfy two conditions. The fastening systems must, on the one hand, avoid the lifting of the floor elements, for example under the effect of a strong wind, and on the other hand, they must avoid the spillage of the floor element, c 'is to say the tilting of the floor element and whatever the place of this element where the worker is supported. It is also desirable that the fastening system has active safety characteristics, that is to say that the disassembly of the floor element relative to the scaffolding elements can only be obtained by a voluntary action of that who does this disassembly.

Un objet de la présente invention est de fournir des éléments de plancher pour échafaudage qui satisfassent aux exigences énoncées ci-dessus et qui de plus soient d'un coût aussi réduit que possible.It is an object of the present invention to provide scaffolding floor elements which meet the requirements set out above and which furthermore are as low in cost as possible.

Pour atteindre ce but, selon l'invention, l'élément de plancher pour échafaudage comprenant une plaque allongée munie à chacune de ses extrémités de moyens de solidarisation sur des éléments d'échafaudage horizontaux s'étendant perpendiculairement à la longueur dudit élément de plancher, se caractérise en ce que chaque moyen de solidarisation comprend au moins deux ensembles formant crochets, faisant saillie hors de l'extrémité correspondante de ladite plaque et aptes à reposer sur un élément d'échafaudage horizontal, lesdits deux crochets étant espacés selon la largeur de ladite plaque, chaque ensemble formant crochet comportant une extension reposant sur une extrémité de la plaque d'un élément de plancher adjacent selon le sens de la longueur de l'élément de plancher, les ensembles formant crochets d'une première extrémité de la plaque étant décalés selon la largeur de la plaque par rapport aux ensembles formant crochet de la deuxième extrémité d'une distance d au moins égale à la largeur d'un élément formant crochet.To achieve this object, according to the invention, the floor element for scaffolding comprising an elongated plate provided at each of its ends with means of fastening on horizontal scaffolding elements extending perpendicular to the length of said floor element, is characterized in that each securing means comprises at least two sets forming hooks, projecting out of the corresponding end of said plate and able to rest on a horizontal scaffolding element, said two hooks being spaced along the width of said plate, each hook assembly having an extension resting on one end of the plate of an adjacent floor element in the direction of the length of the floor element, the hook assembly of a first end of the plate being offset along the width of the plate relative to the hook assemblies of the second end d 'a distance d at least equal to the width of a hook element.

On comprend que, grâce aux extensions que comporte chaque crochet, ces extensions reposant sur la plaque de l'élément de plancher adjacent et ceci étant vrai pour les deux plaques alignées, un éventuel soulèvement d'un élément de plancher est contrarié par le fait qu'un autre élément de plancher est lui-même en appui sur celui-ci, ce qui rend impossible un tel soulèvement.It is understood that, thanks to the extensions that each hook has, these extensions resting on the plate of the adjacent floor element and this being true for the two aligned plates, a possible lifting of a floor element is thwarted by the fact that 'Another floor element is itself supported thereon, which makes such lifting impossible.

Selon un mode préféré de réalisation, chaque moyen de solidarisation comprend en outre un ensemble de verrouillage escamotable comprenant au moins un verrou monté pivotant par rapport à l'extrémité de ladite plaque et dont une extrémité fait saillie hors de l'extrémité de ladite plaque en regard des éléments formant crochet, ledit verrou étant maintenu dans sa position de verrouillage par des moyens formant contrepoids, l'extrémité dudit verrou pouvant être écartée de sa position de verrouillage par l'élément d'échafaudage lors de la mise en place dudit élément de plancher sur ledit élément d'échafaudage.According to a preferred embodiment, each securing means further comprises a retractable locking assembly comprising at least one lock pivotally mounted relative to the end of said plate and one end of which protrudes from the end of said plate in view of the hook elements, said latch being held in its locking position by counterweight means, the end of said latch being able to be moved away from its locking position by the scaffolding element during the positioning of said floor on said scaffolding element.

On comprend que, grâce à cette disposition, après la mise en place des éléments de plancher, chaque extrémité d'une plaque est verrouillée sur les éléments d'échafaudage horizontaux par la coopération d'un crochet et d'un verrou qui est maintenu dans sa position de verrouillage par l'effet du contrepoids, ce qui évite tout risque de déversement sous l'effet d'une charge appliquée à la plaque.It is understood that, thanks to this arrangement, after the installation of the floor elements, each end of a plate is locked on the horizontal scaffolding elements by the cooperation of a hook and a latch which is held in its locking position by the effect of the counterweight, which avoids any risk of spillage under the effect of a load applied to the plate.

Selon un mode de réalisation préféré, le verrou est monté pivotant sur une pièce formant levier dont une première extrémité est articulée par rapport à ladite extrémité de la plaque et dont l'autre extrémité est solidaire des moyens formant contrepoids.According to a preferred embodiment, the lock is pivotally mounted on a part forming a lever, a first end of which is articulated relative to said end of the plate and the other end of which is secured to the means forming a counterweight.

De préférence, chaque ensemble de verrouillage escamotable comprend deux éléments de verrouillage identiques montés à chaque bout de la largeur de l'extrémité d'une plaque, chaque élément de verrouillage comprenant un verrou dont une extrémité est articulée sur une pièce formant levier, ladite pièce formant levier présentant une première extrémité solidaire d'un axe de rotation commun aux deux éléments de verrouillage et une deuxième extrémité solidaire d'une tige commune aux deux éléments de verrouillage formant un contrepoids et une poignée de commande.Preferably, each retractable locking assembly comprises two identical locking elements mounted at each end of the width of the end of a plate, each locking element comprising a latch, one end of which is articulated on a part forming a lever, said part forming a lever having a first end secured to an axis of rotation common to the two locking elements and a second end secured to a rod common to the two locking elements forming a counterweight and a control handle.

Un autre objet de l'invention est de fournir un procédé d'assemblage d'un élément de plancher pour échafaudage du type défini ci-dessus, caractérisé en ce qu'il comporte les étapes suivantes:

  • - on fournit une plaque allongée munie d'au moins un bord disposé selon la largeur d'au moins une extrémité de ladite plaque et pourvu de deux fentes et de deux logements disposés aux extrémités de ladite largeur,
  • - on fournit un ensemble de verrouillage escamotable défini ci-dessus,
  • - on présente une première extrémité de l'axe de rotation en regard d'un desdits logements, l'autre extrémité dudit axe étant décalée par rapport audit deuxième logement,
  • - on introduit ladite première extrémité de l'axe de rotation dans ledit premier logement jusqu'à ce que ledit axe arrive en butée,
  • - on présente la deuxième extrémité dudit axe de rotation en regard dudit deuxième logement et on l'engage dans ledit deuxième logement jusqu'à ce que lesdits verrous soient en regard desdites fentes et on introduit lesdites extrémités desdits verrous dans lesdites fentes de telle manière que lesdites extrémités fassent saillie hors dudit rebord, et
  • - on introduit un ergot dans un orifice ménagé dans chaque extrémité (de chaque verrou et on le fixe sur ledit verrou.
Another object of the invention is to provide a method of assembling a floor element for scaffolding of the type defined above, characterized in that it comprises the following steps:
  • an elongated plate is provided provided with at least one edge disposed along the width of at least one end of said plate and provided with two slots and two housings disposed at the ends of said width,
  • - a retractable locking assembly is defined above,
  • a first end of the axis of rotation is presented opposite one of said housings, the other end of said axis being offset relative to said second housing,
  • said first end of the axis of rotation is introduced into said first housing until said axis comes into abutment,
  • the second end of said axis of rotation is presented opposite said second housing and it is engaged in said second housing until said latches are opposite said slots and said ends of said latches are introduced into said slots so that said ends protrude out of said flange, and
  • - A lug is introduced into an orifice made in each end (of each lock and it is fixed on said lock.

D'autres caractéristiques et avantages de la présente invention apparaîtront mieux à la lecture de la description qui suit de plusieurs modes de réalisation de l'invention donnés à titre d'exemples non limitatifs. La description se réfère aux figures annexées sur lesquelles:

  • - la figure 1, déjà décrite, montre en perspective une partie d'un échafaudage muni d'un plancher;
  • - la figure 2 montre en coupe verticale longitudinale un élément de plancher ;
  • - la figure 3 est une vue simplifiée de dessus montrant la coopération des différents éléments de plancher entre eux ;
  • - la figure 4 est un schéma montrant la mise en place de deux éléments alignés de plancher sur un élément horizontal d'échafaudage ;
  • - la figure 5 est une vue en perspective des moyens de verrouillage des éléments de plancher; et
  • - les figures 6, 7 et 8 montrent les différentes positions des moyens de verrouillage lors de la mise en place de deux éléments alignés de plancher sur les éléments horizontaux d'échafaudage.
Other characteristics and advantages of the present invention will appear better on reading the following description of several embodiments of the invention given by way of nonlimiting examples. The description refers to the appended figures in which:
  • - Figure 1, already described, shows in perspective part of a scaffolding provided with a floor;
  • - Figure 2 shows a longitudinal vertical section of a floor element;
  • - Figure 3 is a simplified top view showing the cooperation of the different floor elements together;
  • - Figure 4 is a diagram showing the establishment of two aligned floor elements on a horizontal scaffolding element;
  • - Figure 5 is a perspective view of the locking means of the floor elements; and
  • - Figures 6, 7 and 8 show the different positions of the locking means during the establishment of two aligned floor elements on the horizontal scaffolding elements.

En se référant tout d'abord à la figure 2, on va décrire l'ensemble d'un élément de plancher conforme à l'invention. Celui-ci est constitué d'une part par une plaque allongée 32 ou plus précisément de préférence par un profilé comportant une plaque supérieure 34 et deux rebords latéraux, seul le rebord 36 étant visible. Les dimensions du rebord 36 et le choix de l'épaisseur du profilé dépendent bien sûr des dimensions totales de l'élément de plancher ainsi que des charges à supporter. A chacune de ses extrémités, la plaque 32 est munie de moyens de solidarisation respectivement référencés 38 et 40. Chaque moyen de solidarisation 38 ou 40 comprend d'une part des crochets, portant la référence générale 42, qui sont destinés à venir en appui sur des éléments d'échafaudage horizontaux tels que 44 et un ensemble de verrouillage portant la référence générale 46 qui, après la mise en place de l'élément de plancher sur l'élément d'échafaudage 44, assure la solidarisation de l'élément de plancher sur l'échafaudage. Plus précisément, le crochet 42 et le système de verrouillage 46 sont montés sur une pièce en U 48 qui est soudée aux extrémités de la plaque 32 selon la direction de la largeur de celle-ci. Les crochets, tels que 42, comportent une partie de fixation 50 soudée sur la pièce en U 48 un bec 52 assurant la fonction de crochet et un prolongement horizontal 54 qui s'étend au-delà du bec 52. La face inférieure 54a du prolongement est disposée sensiblement dans le même plan horizontal que la face supérieure de la plaque 34.Referring first to Figure 2, we will describe the assembly of a floor element according to the invention. This consists on the one hand of an elongated plate 32 or more precisely preferably by a profile comprising an upper plate 34 and two lateral edges, only the edge 36 being visible. The dimensions of the rim 36 and the choice of the thickness of the profile naturally depend on the total dimensions of the floor element as well as the loads to be supported. At each of its ends, the plate 32 is provided with fastening means respectively referenced 38 and 40. Each fastening means 38 or 40 comprises on the one hand hooks, bearing the general reference 42, which are intended to come to bear on horizontal scaffolding elements such as 44 and a locking assembly bearing the general reference 46 which, after the installation of the floor element on the scaffolding element 44, ensures the joining of the floor element on the scaffolding. More specifically, the hook 42 and the locking system 46 are mounted on a U-shaped part 48 which is welded to the ends of the plate 32 in the direction of the width of the latter. The hooks, such as 42, comprise a fixing part 50 welded to the U-shaped part 48 a spout 52 ensuring the hook function and a horizontal extension 54 which extends beyond the spout 52. The lower face 54a of the extension is arranged substantially in the same horizontal plane as the upper face of the plate 34.

On comprendra mieux la disposition des éléments formant crochet en se référant à la figure 3. Sur cette figure, on a représenté la plaque 32a d'un premier élément de plancher 30a et une partie des plaques 32b et 32c d'éléments de plancher 30b et 30c alignés avec l'Iéément 30a. La première extrémité de la plaque 32a est munie des crochets 421 et 422 alors que sa deuxième extrémité est munie des crochets 423 et 424. Pour permettre la mise en place des crochets sur les différents éléments d'échafaudage, les crochets d'une extrémité 421 et 422 sont décalés par rapport aux crochets 423 et 424 de l'autre extrémité. Ce décalage est égal à d et est légèrement supérieur à la largeur d' d'un élément de crochet. Ce décalage d permet aux crochets de venir effectivement en appui directement sur les éléments d'échafaudage 44, 44'. Cela permet également aux extensions des crochets 54 de venir directement en appui sur l'extrémité des deux éléments de plancher alignés 30b et 30c. On comprend qu'ainsi non seulement on réalise un appui efficace des éléments de plancher sur les éléments d'échafaudage mais que de plus par l'intermédiaire des extensions 54 des crochets 42, on réalise un appui mutuel de chaque élément de plancher sur les deux éléments adjacents alignés avec celui-ci.The arrangement of the hook elements will be better understood with reference to FIG. 3. In this figure, there is shown the plate 32a of a first floor element 30a and part of the plates 32b and 32c of floor elements 30b and 30c aligned with Element 30a. The first end of the plate 32a is provided with hooks 42 1 and 42 2 while its second end is provided with hooks 42 3 and 42 4 . To allow the establishment of the hooks on the various scaffolding elements, the hooks of one end 42 1 and 42 2 are offset relative to the hooks 42 3 and 42 4 of the other end. This offset is equal to d and is slightly greater than the width of a hook element. This offset d allows the hooks to come to bear directly on the scaffolding elements 44, 44 '. This also allows the extensions of the hooks 54 to come directly to bear on the end of the two aligned floor elements 30b and 30c. It will be understood that in this way not only is effective support of the floor elements supported on the scaffolding elements but that, moreover, by means of the extensions 54 of the hooks 42, mutual support of each floor element is produced on the two adjacent elements aligned with it.

La figure 4 illustre la mise en place des éléments de plancher 32a et 32b sur un élément d'échafaudage 44. Du fait du recouvrement mutuel des éléments de plancher, en raison de la présence des extensions 54, la mise en place de ces éléments de plancher est réalisée en soulevant les extrémités de ceux-ci et en les abaissant simultanément, ce qui permet la mise en place finale des deux éléments de plancher sur l'élément d'échafaudage 44, les différentes extensions 54 étant ainsi imbriquées.FIG. 4 illustrates the positioning of the floor elements 32a and 32b on a scaffolding element 44. Due to the mutual overlap of the floor elements, due to the presence of the extensions 54, the positioning of these elements floor is made by lifting the ends thereof and lowering them simultaneously, which allows the final positioning of the two floor elements on the scaffolding element 44, the different extensions 54 thus being nested.

On comprend que cette disposition constituée par les crochets 42 et leurs extensions 54 permet de résoudre efficacement le problème du soulèvement éventuel des éléments de plancher. Il reste à résoudre le problème des risques de déversement des éléments de plancher. On comprend en effet que, du fait du décalage nécessaire des différents crochets, il pourrait y avoir un risque éventuel de déversement si un ouvrier est en station verticale, par exemple dans la zone repérée par le point A sur la figure 3.It is understood that this arrangement constituted by the hooks 42 and their extensions 54 makes it possible to effectively solve the problem of the possible lifting of the floor elements. The problem of the risk of spillage from the floor elements remains to be resolved. It is indeed understood that, due to the necessary offset of the different hooks, there could be a possible risk of spillage if a worker is in a vertical station, for example in the area marked by point A in Figure 3.

En se référant maintenant aux figures 5 à 8, on va décrire le dispositif de verrouillage 46 permettant d'éviter le déversement des éléments de plancher. Comme le montre par exemple la figure 6, l'élément de verrouillage 46 est essentiellement constitué par deux pièces 70 et 72 qui sont, de préférence, identiques et articulées l'une par rapport à l'autre. La pièce 70, qu'on appellera ultérieurement levier, est fixée à une première extrémité 74 sur une tige 76 dont l'axe est orthogonal au plan de la pièce 70. A sa deuxième extrémité 78, la pièce 70 est solidaire d'une tige 80 parallèle à la tige 76 et qui constitue un contrepoids. La tige 76 qui forme un axe de pivotement est engagée à ses extrémités dans deux logements tels que 82 solidaires de la pièce en U 48. Dans sa partie médiane, la pièce 70 est munie d'un orifice 84 dans lequel est engagé un ergot d'articulation 86. Cet ergot est également engagé dans un orifice 87 ménagé à proximité de la première extrémité 88 de la pièce 72. La deuxième extrémité de la pièce 72 qui est référencée 90 est pourvue d'un orifice 92 dans lequel on peut engager de façon amovible un ergot 94.Referring now to Figures 5 to 8, we will describe the locking device 46 to prevent the spillage of the floor elements. As shown for example in Figure 6, the locking element 46 is essentially constituted by two parts 70 and 72 which are preferably identical and articulated with respect to each other. The part 70, which will later be called a lever, is fixed at a first end 74 to a rod 76 whose axis is orthogonal to the plane of the part 70. At its second end 78, the part 70 is integral with a rod 80 parallel to the rod 76 and which constitutes a counterweight. The rod 76 which forms a pivot axis is engaged at its ends in two housings such as 82 integral with the U-shaped part 48. In its middle part, the part 70 is provided with an orifice 84 in which is engaged a lug d hinge 86. This lug is also engaged in an orifice 87 formed near the first end 88 of the part 72. The second end of the part 72 which is referenced 90 is provided with an orifice 92 in which one can engage removable lug 94.

Comme le montre mieux la figure 5, chaque extrémité de plaque est munie de deux systèmes de verrouillage identiques, l'un étant référencé 46 et l'autre 46'. Ces deux systèmes de verrouillage sont reliés entre eux par les tiges 76 et 80. En outre, les pièces en U 48 comportent deux fentes, telles que 100, pour permettre le passage des pièces 72 de telle manière que leurs extrémités 90 fassent saillie hors des éléments de plaque. De plus, comme on le voit, les extrémités 90 des pièces 72 formant verrou sont disposées en regard de l'élément 42 formant crochet.As best shown in Figure 5, each end of the plate is provided with two identical locking systems, one being referenced 46 and the other 46 '. These two locking systems are interconnected by the rods 76 and 80. In addition, the U-shaped pieces 48 have two slots, such as 100, to allow the passage of the pieces 72 so that their ends 90 protrude out of the plate elements. In addition, as can be seen, the ends 90 of the parts 72 forming a lock are arranged opposite the element 42 forming a hook.

Il faut ajouter que la barre 80 formant contrepoids constitue également l'équivalent d'une poignée qui peut être saisie par l'ouvrier chargé de l'enlèvement des éléments de plancher, comme on l'expliquera ultérieurement.It should be added that the bar 80 forming a counterweight also constitutes the equivalent of a handle which can be grasped by the worker responsible for removing the floor elements, as will be explained later.

La figure 6 représente des dispositifs de verrouillage 46 de deux éléments de plancher adjacents avant leur engagement sur un élément d'échafaudage horizontal 44. On voit que, dans cette position, les extrémités 90 des pièces 72 font totalement saillie hors des extrémités des éléments de plancher.FIG. 6 shows locking devices 46 of two adjacent floor elements before their engagement on a horizontal scaffolding element 44. It can be seen that, in this position, the ends 90 of the parts 72 protrude completely from the ends of the elements of floor.

Comme le montre mieux la figure 7, lors de l'abaissement des deux éléments de plancher, par exemple 32a et 32b, l'élément d'échafaudage 44 provoque le retrait des extrémités 90 des pièces de verrouillage 72 par pivotement de la pièce 70 autour de son axe 76 et pivotement de la pièce 72 par rapport à la pièce 70 autour des axes 86. Dans cette position, les deux éléments de plancher peuvent être abaissés jusqu'à ce que l'élément d'échafaudage 44 soit engagé dans les éléments formant crochet 42. Après cet engagement, les extrémités 90 des pièces formant verrou 72 reprennent leur position initiale sous l'effet des contrepoids 80. C'est ce qui est représenté sur la figure 8 pour la position 1 des éléments de verrouillage.As best shown in Figure 7, when lowering the two floor elements, for example 32a and 32b, the scaffolding element 44 causes the withdrawal of the ends 90 of the locking pieces 72 by pivoting the piece 70 around of its axis 76 and pivoting of the part 72 relative to the part 70 around the axes 86. In this position, the two floor elements can be lowered until the scaffolding element 44 is engaged in the elements forming a hook 42. After this engagement, the ends 90 of the parts forming a lock 72 return to their initial position under the effect of the counterweights 80. This is what is shown in FIG. 8 for position 1 of the locking elements.

Lorsque l'on veut procéder au démontage des éléments de plancher, il est nécessaire de provoquer l'escamotage des extrémités 90 des verrous 72. Pour cela l'ouvrier chargé de cette tâche doit saisir les tiges 80 formant poignée pour les relever selon la direction indiquée par la flèche F sur la figure 8 et amener ainsi les pièces 70 et 72 dans la position Il représentée sur la figure 8. En outre, cette figure montre que, grâce à la forme de la pièce 70, dans la position II, la poignée 80 est suffisamment écartée du bord inférieur de la pièce en U 46 pour qu'on puisse la saisir commodément et sans risque de se blesser. Dans cette position, les extrémités 90 des verrous 72 sont totalement escamotées et on peut librement soulever les deux éléments de plancher pour les désolidariser de l'élément d'échafaudage 44. On comprend que, lors de cette opération, le retrait des extrémités 90 des verrous 72 est limité parla présence des ergots 94 qui coopèrent avec les bords des fentes 100 ménagées dans les pièces en U 46. Les ergots 94 sont amovibles car la mise en place initiale du système de verrouillage 46 se fait sans les ergots, ceux-ci n'étant mis en place qu'ultérieurement. Le système de verrouillage 46 est mis en place après que la totalité du reste de l'élément de plancher ait été réalisée. Pour le montage du système de verrouillage, les ergots 94 ne sont pas mis en place. Le système de verrouillage est présenté incliné par rapport à la plaque 34. Une extrémité de la tige 76 est engagée dans un des logements 82 et enfoncée totalement à concurrence du débattement libre limité par le contact entre la pièce 70 et le logement correspondant 82, puis la tige 76 est redressée et introduite dans le deuxième logement 82. La tige 76 est positionnée de telle manière que les extrémités 90 des verrous 72 fassent saillie hors des fentes 100 ménagées dans la pièce en U 48. On met alors en place les ergots 94 dans les orifices 92 et solidarisés aux pièces 72. L'élément de plancher est alors totalement assemblé.When you want to disassemble the floor elements, it is necessary to cause the retraction of the ends 90 of the latches 72. For this the worker responsible for this task must grasp the rods 80 forming a handle to raise them in the direction indicated by the arrow F in FIG. 8 and thus bringing the parts 70 and 72 into position II shown in FIG. 8. Furthermore, this figure shows that, thanks to the shape of the part 70, in position II, the handle 80 is sufficiently spaced from the lower edge of the U-shaped part 46 so that it can be grasped conveniently and without risk of injury. In this position, the ends 90 of the latches 72 are completely retracted and the two floor elements can be freely lifted to separate them from the scaffolding element 44. It is understood that, during this operation, the withdrawal of the ends 90 of the locks 72 is limited by the presence of the lugs 94 which cooperate with the edges of the slots 100 formed in the U-shaped pieces 46. The lugs 94 are removable because the initial installation of the locking system 46 is done without the lugs, these being set up only later. The locking system 46 is put in place after all of the rest of the floor element has been completed. For mounting the locking system, the lugs 94 are not in place. The locking system is presented inclined with respect to the plate 34. One end of the rod 76 is engaged in one of the housings 82 and fully depressed up to the free clearance limited by the contact between the part 70 and the corresponding housing 82, then the rod 76 is straightened and inserted into the second housing 82. The rod 76 is positioned so that the ends 90 of the latches 72 protrude out of the slots 100 formed in the U-shaped part 48. The pins 94 are then put in place in the orifices 92 and secured to the parts 72. The floor element is then completely assembled.

On comprend que l'élément d'échafaudage selon l'invention permet de résoudre efficacement et à un coût réduit les problèmes de soulèvement et de déversement. En outre, la mise en place et l'enlèvement des éléments de plancher sur ou hors de l'échafaudage sont très simples à mettre en oeuvre. En effet, la mise en place est réalisée sans opération particulière tandis que l'enlèvement est réalisé commodément grâce à la présence des poignées qui sont facilement accessibles par le dessous des éléments de plancher.It will be understood that the scaffolding element according to the invention makes it possible to solve effectively and at a reduced cost the problems of lifting and spillage. In addition, the installation and removal of the floor elements on or off the scaffolding are very simple to implement. Indeed, the establishment is carried out without any particular operation while the removal is carried out conveniently thanks to the presence of the handles which are easily accessible from below the floor elements.

Claims (6)

1. Elément de plancher pour échafaudage comprenant une plaque allongée (32) munie à chacune de ses extrémités de moyens de solidarisation (38, 40) sur des éléments d'échafaudage horizontaux (44) s'étendant perpendiculairement à la longueur dudit élément de plancher, caractérisé en ce que chaque moyen de solidarisation comprend au moins deux ensembles formant crochets (42), faisant saillie hors de l'extrémité correspondante de ladite plaque et aptes à reposer sur un élément d'échafaudage horizontal (44), lesdits deux crochets étant espacés selon la largeur de ladite plaque, chaque ensemble formant crochet comportant une extension (54) reposant sur une extrémité de la plaque d'un élément de plancher adjacent selon le sens de la longueur de l'élément de plancher, les ensembles formant crochets d'une première extrémité (421, 422) de la plaque étant décalés selon la largeur de la plaque par rapport aux ensembles formant crochet (423, 424) de la deuxième extrémité d'une distance d au moins égale à la largeur (d) d'un élément formant crochet.1. Floor element for scaffolding nant an elongated plate (32) provided at each of its ends with securing means (38, 40) on horizontal scaffolding elements (44) extending perpendicular to the length of said floor element, characterized in that each means securing comprises at least two sets forming hooks (42), projecting from the corresponding end of said plate and adapted to rest on a horizontal scaffolding element (44), said two hooks being spaced apart along the width of said plate , each hook assembly comprising an extension (54) resting on one end of the plate of an adjacent floor element in the direction of the length of the floor element, the hook assembly of a first end (42 1 , 42 2 ) of the plate being offset along the width of the plate relative to the hook assemblies (42 3 , 42 4 ) of the second end by a distance d at least equal ale to the width (d) of a hook element. 2. Elément de plancher selon la revendication 1, caractérisé en ce que chaque moyen de solidarisation (38, 40) comprend en outre un ensemble de verrouillage escamotable (46) comprenant au moins un verrou (72) monté pivotant par rapport à l'extrémité de ladite plaque et dont une extrémité (90) fait saillie hors de l'extrémité de ladite plaque en regard des éléments formant crochet (42), ledit verrou étant maintenu dans sa position de verrouillage par des moyens formant contrepoids (80), l'extrémité dudit verrou pouvant être écarté de sa position de verrouillage par l'élément d'échafaudage lors de la mise en place dudit élément de plancher sur ledit élément d'échafaudage.2. Floor element according to claim 1, characterized in that each securing means (38, 40) further comprises a retractable locking assembly (46) comprising at least one latch (72) pivotally mounted relative to the end of said plate and one end (90) of which protrudes from the end of said plate opposite the hook elements (42), said latch being held in its locked position by counterweight means (80), the end of said latch can be moved away from its locking position by the scaffolding element when said floor element is placed on said scaffolding element. 3. Elément de plancherselon la revendication 2, caractérisé en ce que le verrou (72) est monté pivotant sur une pièce formant levier (70) dont une première extrémité (74) est articulée par rapport à ladite extrémité de la plaque (32) et dont l'autre extrémité (78) est solidaire des moyens formant contrepoids (80).3. floor element according to claim 2, characterized in that the latch (72) is pivotally mounted on a part forming a lever (70) of which a first end (74) is articulated relative to said end of the plate (32) and the other end of which (78) is integral with counterweight means (80). 4. Elémentde plancher selon la revendication 3, caractérisé en ce que les moyens formant contrepoids (80) constituent de plus une poignée qui peut être actionnée pour amener le verrou (72) en position escamotée.4. Floor element according to claim 3, characterized in that the counterweight means (80) further constitute a handle which can be actuated to bring the latch (72) in the retracted position. 5. Elémentde plancher selon la revendication 2, caractérisé en ce que chaque ensemble de verrouillage escamotable (46) comprend deux éléments de verrouillage identiques montés à chaque bout de la largeur de l'extrémité d'une plaque, chaque élément de verrouillage comprenant un verrou (72) dont une extrémité (88) est articulée sur une pièce formant levier (70), ladite pièce formant levier présentant une première extrémité (74) solidaire d'un axe de rotation (76) commun aux deux éléments de verrouillage dont les extrémités sont montées pivotantes dans des logements solidaires de ladite plaque et une deuxième extrémité (78) solidaire d'une tige (80) commune aux deux éléments de verrouillage formant un contrepoids et une poignée de commande.5. Floor element according to claim 2, characterized in that each retractable locking assembly (46) comprises two identical locking elements mounted at each end of the width of the end of a plate, each locking element comprising a latch (72) one end of which (88) is articulated on a lever part (70), said lever part having a first end (74) integral with a rotation axis (76) common to the two locking elements, the ends of which are pivotally mounted in housings integral with said plate and a second end (78) integral with a rod (80) common to the two locking elements forming a counterweight and a control handle. 6. Procédé d'assemblage d'un élément de plancher pour échafaudage selon la revendication 5, caractérisé en ce qu'il comporte les étapes suivantes: - on fournit une plaque allongée (32) munie d'au moins un bord (46) disposé selon la largeur d'au moins une extrémité de ladite plaque et pourvu de deux fentes (100) et de deux logements (82) disposés aux extrémités de ladite largeur, - on fournit un ensemble de verrouillage escamotable (46) selon la revendication 5, - on présente une première extrémité de l'axe de rotation (76) en regard d'un desdits logements (82), l'autre extrémité dudit axe étant décalée par rapport audit deuxième logement, - on introduit ladite première extrémité de l'axe de rotation dans ledit premier logement jusqu'à ce que ledit axe arrive en butée, - on présente la deuxième extrémité dudit axe de rotation en regard dudit deuxième logement et on l'engage dans ledit deuxième logement jusqu'à ce que lesdits verrous (72) soient en regard desdites fentes (100) et on introduit lesdites extrémités (90) desdits verrous dans lesdites fentes de telle manière que lesdites extrémités fassent saillie hors dudit rebord, et - on introduit un ergot (94) dans un orifice (92) ménagé dans chaque extrémité (90) de chaque verrou (72) et on le fixe sur ledit verrou. 6. A method of assembling a scaffold floor element according to claim 5, characterized in that it comprises the following steps: - Providing an elongated plate (32) provided with at least one edge (46) arranged along the width of at least one end of said plate and provided with two slots (100) and two housings (82) arranged at the ends of said width, - a retractable locking assembly (46) according to claim 5 is provided, a first end of the axis of rotation (76) is presented opposite one of said housings (82), the other end of said axis being offset with respect to said second housing, said first end of the axis of rotation is introduced into said first housing until said axis comes into abutment, - The second end of said axis of rotation is presented opposite said second housing and it is engaged in said second housing until said latches (72) are opposite said slots (100) and said ends (90) are introduced. said latches in said slots so that said ends protrude out of said flange, and - A lug (94) is introduced into an orifice (92) formed in each end (90) of each latch (72) and it is fixed on said latch.
EP94400487A 1993-03-08 1994-03-08 Scaffolding platform element Withdrawn EP0616098A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9302634A FR2702507B1 (en) 1993-03-08 1993-03-08 FLOOR ELEMENT FOR SCAFFOLDING.
FR9302634 1993-03-08

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EP0616098A1 true EP0616098A1 (en) 1994-09-21

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FR (1) FR2702507B1 (en)

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GB2294495A (en) * 1994-10-28 1996-05-01 Alloy Die & Cast Ltd Locking device for scaffolding platform
FR2781515A1 (en) 1998-07-21 2000-01-28 Entrepose Echafaudages Scaffolding floor panel has trapezoidal panel with triangular hinged end flaps

Families Citing this family (1)

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Publication number Priority date Publication date Assignee Title
CN116816054B (en) * 2023-08-30 2023-11-21 哈尔滨工业大学 Anti-toppling scaffold for bridge road and building construction and construction method

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US3306397A (en) * 1965-05-24 1967-02-28 Elmer L Brumenshenkel Sectional platform or support for use with scaffolding
US3355195A (en) * 1964-06-10 1967-11-28 Kobe Steel Ltd Joint structure for plate members
EP0017957A1 (en) * 1979-04-21 1980-10-29 Gerhard Dobersch Scaffold working platform consisting of separate planks
GB2074225A (en) * 1980-04-15 1981-10-28 Ramsay & Sons Forfar Ltd Stage boards
EP0061257A1 (en) * 1981-03-19 1982-09-29 Eigertower Limited Scaffold locking hook
GB2127086A (en) * 1982-08-20 1984-04-04 Alto Systems Ltd Automatic latch for use in scaffolding structures
EP0407680A1 (en) * 1989-07-12 1991-01-16 TRAVHYDRO ECHAFAUDAGES Société Anonyme Method for connecting a prefabricated scaffolding platform to a horizontal cross member, and prefabricated scaffolding platform thereto

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Publication number Priority date Publication date Assignee Title
US3355195A (en) * 1964-06-10 1967-11-28 Kobe Steel Ltd Joint structure for plate members
US3306397A (en) * 1965-05-24 1967-02-28 Elmer L Brumenshenkel Sectional platform or support for use with scaffolding
EP0017957A1 (en) * 1979-04-21 1980-10-29 Gerhard Dobersch Scaffold working platform consisting of separate planks
GB2074225A (en) * 1980-04-15 1981-10-28 Ramsay & Sons Forfar Ltd Stage boards
EP0061257A1 (en) * 1981-03-19 1982-09-29 Eigertower Limited Scaffold locking hook
GB2127086A (en) * 1982-08-20 1984-04-04 Alto Systems Ltd Automatic latch for use in scaffolding structures
EP0407680A1 (en) * 1989-07-12 1991-01-16 TRAVHYDRO ECHAFAUDAGES Société Anonyme Method for connecting a prefabricated scaffolding platform to a horizontal cross member, and prefabricated scaffolding platform thereto

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2294495A (en) * 1994-10-28 1996-05-01 Alloy Die & Cast Ltd Locking device for scaffolding platform
FR2781515A1 (en) 1998-07-21 2000-01-28 Entrepose Echafaudages Scaffolding floor panel has trapezoidal panel with triangular hinged end flaps

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Publication number Publication date
FR2702507B1 (en) 1995-06-16
FR2702507A1 (en) 1994-09-16

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