EP0491634A1 - Connecting arrangement for seaffold platforms - Google Patents

Connecting arrangement for seaffold platforms Download PDF

Info

Publication number
EP0491634A1
EP0491634A1 EP91420451A EP91420451A EP0491634A1 EP 0491634 A1 EP0491634 A1 EP 0491634A1 EP 91420451 A EP91420451 A EP 91420451A EP 91420451 A EP91420451 A EP 91420451A EP 0491634 A1 EP0491634 A1 EP 0491634A1
Authority
EP
European Patent Office
Prior art keywords
frames
crosspieces
hooks
notches
floors
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
Application number
EP91420451A
Other languages
German (de)
French (fr)
Other versions
EP0491634B1 (en
Inventor
André Peronnier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CONSTRUCTION DE MATERIEL POUR LE BATIMENT ET L'INDUSTRIE COMABI
Original Assignee
CONSTRUCTION DE MATERIEL POUR LE BATIMENT ET L'INDUSTRIE COMABI
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by CONSTRUCTION DE MATERIEL POUR LE BATIMENT ET L'INDUSTRIE COMABI filed Critical CONSTRUCTION DE MATERIEL POUR LE BATIMENT ET L'INDUSTRIE COMABI
Publication of EP0491634A1 publication Critical patent/EP0491634A1/en
Application granted granted Critical
Publication of EP0491634B1 publication Critical patent/EP0491634B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G1/00—Scaffolds primarily resting on the ground
    • E04G1/15—Scaffolds primarily resting on the ground essentially comprising special means for supporting or forming platforms; Platforms
    • E04G1/154—Non-detachably fixed and secured connections between platform and scaffold
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G7/00—Connections between parts of the scaffold
    • E04G7/02—Connections between parts of the scaffold with separate coupling elements
    • E04G7/28—Clips or connections for securing boards
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G7/00—Connections between parts of the scaffold
    • E04G7/02—Connections between parts of the scaffold with separate coupling elements
    • E04G7/28—Clips or connections for securing boards
    • E04G2007/285—Clips or connections for securing boards specially adapted for toe boards

Definitions

  • the present invention relates to a device intended for fixing scaffolding floors to load-bearing structures constituted by prefabricated frames.
  • the device which is the subject of the invention maintains the scaffolding floors in position without additional means, while allowing the dismantling and mounting of these floors on an erected support structure.
  • the scaffolding currently used generally consists, on the one hand, of a load-bearing metal structure formed by prefabricated elements (frames, rails, posts, diagonals) or by assemblies of tubes and assembly collars, and on the other part, freestanding floors or horizontal planks.
  • the connection of the floors with the supporting structure must ensure the resumption of the vertical forces due to the load supported by the floors, the maintenance in position of the floors when they are subjected to a vertical force due to the wind, and the transmission of the horizontal forces in the structure.
  • Scaffolding floors are generally fitted, at their ends, with hooks positioned on the horizontal crosspieces of the supporting structure.
  • Vertical immobilization towards the top of the floors is generally ensured either by a locking device integrated into the hooks or the floor, or by the lower cross member of an upper frame of the support structure, coming to block the hooks in the upper cross member of a lower frame of the same structure.
  • the latter solution imposes a very precise assembly order, the floor must be placed on the lower frames before the installation of the upper frames, and it excludes in particular the disassembly or addition of the floors once the structure is assembled.
  • FIG. 1 of the accompanying schematic drawing partially shows a scaffolding structure of a type currently very common.
  • This structure consists of closed frames comprising in particular an upper cross member 1 and a lower cross member 2, joined by tubular posts 3, 4.
  • the upper cross member 1, belonging for example to a lower frame 5, has a "U" section with wings facing upwards.
  • the lower cross member 2 belonging for example to an upper frame 6 is generally constituted by a tube of rectangular section; it can also be constituted by a tube of square section, or by a "U" profile whose wings are turned downwards.
  • the hooks 7 of a floor 8 rest on a wing of the upper cross member 1 of the lower frame 5, and are blocked because the width of the lower cross member 2 of the upper frame 6 is equal to, or at least substantially equal to, the width of the upper cross member 1, thus preventing the hooks 7 from being released upwards.
  • the lower ends of the tubular posts 4 of the upper frame 6 are engaged in the upper ends of the tubular posts 3 of the lower frame 5; pins 9 cross horizontally the nested parts of the posts 3 and 4, and provide the connection between the lower 5 and upper frames 6.
  • the hooks 7 are thus trapped between the crosspieces 1 and 2, in other words that the floor 8 is itself trapped between the lower 5 and upper 6 frames, and that it is not possible to remove or add such a floor 8 to the erected structure, without at least partially dismantling this structure.
  • the invention aims to remedy this drawback, therefore to allow the removal and addition of floors without dismantling the support structure, in particular to be able to move and reuse one of the floors depending on the work to be done, while ensuring good immobilization of floors.
  • the subject of the present invention is a fixing device for scaffolding floors, equipped at their ends with hooks facing downwards and intended to cooperate with upper horizontal crosspieces of frames belonging to the supporting structure, while lower horizontal crosspieces of frames belonging to the same support structure limit the upward movement of the hooks supported on the upper crosspieces
  • the device being characterized in that the upper crosspieces of the frames have notches formed on their sides corresponding to the positions of the hooks of the floors to be fixed and provided to receive these hooks, and in that the lower crosspieces of the frames, of width less than that of the upper crosspieces, comprise laterally projecting parts situated in correspondence with the positions of the notches of the upper crosspieces, of so that a hook engaged in a notch of an upper cross-member is surmounted by a projecting part of a lower cross-member which limits its direct movement upwards, but can be released from the notch and of the corresponding projecting part by a movement having a lateral component.
  • a floor can therefore be removed by a successively vertical displacement, then lateral and again vertical, and of course by a succession of reverse movements it is possible to set up a floor, this always without separating the upper frames from the lower frames of the load-bearing structure.
  • the presence of a longitudinal plinth of the floor, cooperating with a fixing lug secured to a post of the upper frame is sufficient to laterally block the floor in normal times and thus avoids the possibility of releasing this floor accidentally out of the notches.
  • the aforementioned notches are formed on the upper edge of the wings of these section profiles in "U".
  • the lower crosspieces of the frames of the supporting structure are constituted by profiles having an inverted "U" section, with downwardly facing wings which locally include outwardly facing deformations forming said projecting parts, which avoids any patches.
  • the invention incorporates a generally known type of load-bearing structure consisting of closed frames, in particular comprising an upper cross member 1 and a lower cross member 2, joined by posts tubular 3,4.
  • a lower frame 5 and an upper frame 6, superimposed and assembled together by fitting their respective posts 3,4, and a scaffolding floor 8 which must be fixed, by one end, at the level of the junction between the two frames 5,6.
  • the end of the floor 8 is provided, for its fixing, with two hooks 7 facing downwards, the hooks 7 here being obtained from a flat profile folded adequately.
  • the upper cross member 1 of the lower frame 5 is formed by a profile having a "U" section, with two parallel wings 10, located in vertical planes and facing upwards.
  • Each wing 10 has two notches 11 which are arranged in correspondence with the positions of the hooks 7 of the floor 8 and which open onto the upper edge of this wing 10, the width of the notches 11 being in relation to that of the hooks 7.
  • the lower cross member 2 of the upper frame 6 is produced in the form of a tube of rectangular section, the width d of which is less than the width D of the upper cross member 1 of the lower frame 5.
  • a flat iron 12 is welded under the face lower of the lower cross member 2.
  • the flat iron 12 has on each of its longitudinal edges two lugs 13, projecting laterally, located in correspondence with the positions of the notches 11 of the upper cross member 1; in line with the lugs 7, the flat iron 12 locally has an increased width, substantially equal to that D of the upper cross member 1.
  • each hook 7 can be released voluntarily from the corresponding notch 11 by a slight vertical displacement, followed by a lateral displacement which shifts the hook 7 relative to the lug 13 surmounting this notch 11. Due to the reduced width d of the upper cross member 2, the hook 7 then finds a free space above it, making it possible to move it again upwards, without encountering any obstacle. Thus, the end of the floor 8 can be entirely released. Naturally, the same operation can be carried out simultaneously at the two ends of the floor 8 fixed by the same device, so that the floor can be removed from the support structure without the need to separate the lower frames 5 and upper 6.
  • a lateral blocking of the end of the floor 8, fixed to the support structure by the device described above, is ensured by taking advantage of a longitudinal plinth 14 of this floor 8.
  • the plinth 14 is extended by a short horizontal rod 15, which is engaged in a fixing lug 16 secured to a post 4 of the upper frame 6.
  • the floor 8 is immobilized laterally in normal times, and it cannot be released .
  • FIG. 7 represents a variant, concerning the production of the lower crossmember 2 of a frame 6.
  • the lower crossmember 2 here consists of a section having an inverted "U" section, the current width of this crossmember 2 being , as before, lower than that of the upper crossmember (not shown).
  • the wings 17 of the profile, facing the bottom locally contain deformations 18 facing outwards, which form protruding parts producing the equivalent of the lugs 13 of the embodiment described above, the deformations 18 being located in correspondence with the positions of the notches of the crossmember superior.

Abstract

This device secures scaffold boards to carrying structures constituted by prefabricated frames. The boards (8) are equipped at their ends with downwardly turned hooks (7), which are housed in notches (11) which the upper transoms (ledgers) (1) of the lower frames (5) comprise. The lower transoms (ledgers) (2) of the upper frames (6) of width (d) less than that (D) of the upper transoms (ledgers) (1), comprise lugs (13) or other laterally projecting parts, which are located in correspondence with the notches (11) in order to limit the direct upward movement of the hooks (7), whilst permitting a release of the latter by means of a movement comprising a lateral component. Boards (8) can be removed or added without dismantling the carrying structure. <IMAGE>

Description

La présente invention est relative à un dispositif destiné à la fixation de planchers d'échafaudages sur des structures porteuses constituées par des cadres préfabriqués. Le dispositif objet de l'invention assure le maintien en position des planchers d'échafaudages sans moyens additionnels, tout en autorisant le démontage et le montage de ces planchers sur une structure porteuse érigée.The present invention relates to a device intended for fixing scaffolding floors to load-bearing structures constituted by prefabricated frames. The device which is the subject of the invention maintains the scaffolding floors in position without additional means, while allowing the dismantling and mounting of these floors on an erected support structure.

Les échafaudages actuellement utilisés sont généralement constitués, d'une part, d'une structure métallique porteuse formée d'éléments préfabriqués (cadres, lisses, poteaux, diagonales) ou par des ensembles de tubes et de colliers d'assemblage, et d'autre part, de planchers autoportants ou de planches horizontales. La liaison des planchers avec la structure porteuse doit assurer la reprise des efforts verticaux dus à la charge supportée par les planchers, le maintien en position des planchers lorsqu'ils sont soumis à un effort vertical dû au vent, et la transmission des efforts horizontaux dans la structure.The scaffolding currently used generally consists, on the one hand, of a load-bearing metal structure formed by prefabricated elements (frames, rails, posts, diagonals) or by assemblies of tubes and assembly collars, and on the other part, freestanding floors or horizontal planks. The connection of the floors with the supporting structure must ensure the resumption of the vertical forces due to the load supported by the floors, the maintenance in position of the floors when they are subjected to a vertical force due to the wind, and the transmission of the horizontal forces in the structure.

Les planchers d'échafaudages sont généralement équipés, à leurs extrémités, de crochets se positionnant sur les traverses horizontales de la structure porteuse. L'immobilisation verticale vers le haut des planchers est généralement assurée soit par un dispositif de verrouillage intégré aux crochets ou au plancher, soit par la traverse inférieure d'un cadre supérieur de la structure porteuse, venant bloquer les crochets dans la traverse supérieure d'un cadre inférieur de la même structure. Cette dernière solution impose un ordre de montage bien précis, le plancher devant être posé obligatoirement sur les cadres inférieurs avant la mise en place des cadres supérieurs, et elle exclut en particulier le démontage ou le rajout des planchers une fois la structure montée.Scaffolding floors are generally fitted, at their ends, with hooks positioned on the horizontal crosspieces of the supporting structure. Vertical immobilization towards the top of the floors is generally ensured either by a locking device integrated into the hooks or the floor, or by the lower cross member of an upper frame of the support structure, coming to block the hooks in the upper cross member of a lower frame of the same structure. The latter solution imposes a very precise assembly order, the floor must be placed on the lower frames before the installation of the upper frames, and it excludes in particular the disassembly or addition of the floors once the structure is assembled.

Ceci est illustré par la figure 1 du dessin schématique annexé, qui montre partiellement une structure d'échafaudage d'un type actuellement très courant. Cette structure est constituée de cadres fermés comportant notamment une traverse supérieure 1 et une traverse inférieure 2, réunies par des poteaux tubulaires 3, 4. La traverse supérieure 1, appartenant par exemple à un cadre inférieur 5, a une section en "U" avec des ailes tournées vers le haut. La traverse inférieure 2 appartenant par exemple à un cadre supérieur 6 est généralement constituée par un tube de section rectangulaire ; elle peut aussi être constituée par un tube de section carrée, ou par un profilé en "U" dont les ailes sont tournées vers le bas. Les crochets 7 d'un plancher 8 reposent sur une aile de la traverse supérieure 1 du cadre inférieur 5, et se trouvent bloqués du fait que la largeur de la traverse inférieure 2 du cadre supérieur 6 est égale, ou du moins sensiblement égale, à la largeur de la traverse supérieure 1, empêchant ainsi de dégager les crochets 7 vers le haut. Il est à noter que les extrémités inférieures des poteaux tubulaires 4 du cadre supérieur 6 sont engagés dans les extrémités supérieures des poteaux tubulaires 3 du cadre inférieur 5 ; des goupilles 9 traversent horizontalement les parties emboîtées des poteaux 3 et 4, et assurent la liaison entre les cadres inférieur 5 et supérieur 6. On comprend que les crochets 7 se trouvent ainsi emprisonnés entre les traverses 1 et 2, autrement dit que le plancher 8 est lui-même emprisonné entre les cadres inférieur 5 et supérieur 6, et qu'il n'est pas possible d'enlever ou de rajouter un tel plancher 8 sur la structure érigée, sans démonter au moins partiellement cette structure.This is illustrated by Figure 1 of the accompanying schematic drawing, which partially shows a scaffolding structure of a type currently very common. This structure consists of closed frames comprising in particular an upper cross member 1 and a lower cross member 2, joined by tubular posts 3, 4. The upper cross member 1, belonging for example to a lower frame 5, has a "U" section with wings facing upwards. The lower cross member 2 belonging for example to an upper frame 6 is generally constituted by a tube of rectangular section; it can also be constituted by a tube of square section, or by a "U" profile whose wings are turned downwards. The hooks 7 of a floor 8 rest on a wing of the upper cross member 1 of the lower frame 5, and are blocked because the width of the lower cross member 2 of the upper frame 6 is equal to, or at least substantially equal to, the width of the upper cross member 1, thus preventing the hooks 7 from being released upwards. It should be noted that the lower ends of the tubular posts 4 of the upper frame 6 are engaged in the upper ends of the tubular posts 3 of the lower frame 5; pins 9 cross horizontally the nested parts of the posts 3 and 4, and provide the connection between the lower 5 and upper frames 6. It is understood that the hooks 7 are thus trapped between the crosspieces 1 and 2, in other words that the floor 8 is itself trapped between the lower 5 and upper 6 frames, and that it is not possible to remove or add such a floor 8 to the erected structure, without at least partially dismantling this structure.

L'invention a pour but de remédier à cet inconvénient, donc de permettre le retrait et le rajout des planchers sans démontage de la structure porteuse, notamment pour pouvoir déplacer et réutiliser l'un des planchers en fonction des travaux à effectuer, tout en assurant une bonne immobilisation des planchers.The invention aims to remedy this drawback, therefore to allow the removal and addition of floors without dismantling the support structure, in particular to be able to move and reuse one of the floors depending on the work to be done, while ensuring good immobilization of floors.

A cet effet, la présente invention a pour objet un dispositif de fixation pour planchers d'échafaudages, équipés à leurs extrémités de crochets tournés vers le bas et prévus pour coopérer avec des traverses horizontales supérieures de cadres appartenant à la structure porteuse, tandis que des traverses horizontales inférieures de cadres appartenant à la même structure porteuse limitent le déplacement vers le haut des crochets appuyés sur les traverses supérieures, le dispositif étant caractérisé en ce que les traverses supérieures des cadres comportent sur leurs flancs des encoches ménagées en correspondance avec les positions des crochets des planchers à fixer et prévues pour recevoir ces crochets, et en ce que les traverses inférieures des cadres, de largeur inférieure à celle des traverses supérieures, comportent des parties latéralement en saillie situées en correspondance avec les positions des encoches des traverses supérieures, de telle sorte qu'un crochet engagé dans une encoche d'une traverse supérieure soit surmonté par une partie en saillie d'une traverse inférieure qui limite son déplacement direct vers le haut, mais puisse être dégagé de l'encoche et de la partie en saillie correspondante par un déplacement comportant une composante latérale.To this end, the subject of the present invention is a fixing device for scaffolding floors, equipped at their ends with hooks facing downwards and intended to cooperate with upper horizontal crosspieces of frames belonging to the supporting structure, while lower horizontal crosspieces of frames belonging to the same support structure limit the upward movement of the hooks supported on the upper crosspieces, the device being characterized in that the upper crosspieces of the frames have notches formed on their sides corresponding to the positions of the hooks of the floors to be fixed and provided to receive these hooks, and in that the lower crosspieces of the frames, of width less than that of the upper crosspieces, comprise laterally projecting parts situated in correspondence with the positions of the notches of the upper crosspieces, of so that a hook engaged in a notch of an upper cross-member is surmounted by a projecting part of a lower cross-member which limits its direct movement upwards, but can be released from the notch and of the corresponding projecting part by a movement having a lateral component.

Le dégagement vertical direct et complet d'un plancher est ainsi empêché par les parties en saillie de la traverse inférieure du cadre supérieur, situées au-dessus des encoches de la traverse supérieure du cadre inférieur dans lesquelles sont logés les crochets. Il existe par contre la possibilité de dégager les crochets des encoches en soulevant légèrement le plancher, puis en effectuant un mouvement latéral de quelques centimètres de ce plancher, de dégager aussi les crochets des parties en saillie ; les crochets sont alors amenés dans une position où ils ne sont plus surmontés par des parties de la traverse inférieure du cadre supérieur, dont la largeur courante est plus petite que la largeur de la traverse supérieure du cadre inférieur, et le plancher peut finalement être dégagé entièrement vers le haut. Un plancher peut donc être enlevé par un déplacement successivement vertical, puis latéral et de nouveau vertical, et bien entendu par une succession de mouvements inverse il est possible de mettre en place un plancher, ceci toujours sans séparer les cadres supérieurs des cadres inférieurs de la structure porteuse. La présence d'une plinthe longitudinale du plancher, coopérant avec une patte de fixation solidaire d'un poteau du cadre supérieur suffit pour bloquer latéralement le plancher en temps normal et évite ainsi la possibilité de dégager ce plancher de façon accidentelle hors des encoches.The direct and complete vertical clearance of a floor is thus prevented by the projections of the lower crossmember of the upper frame, located above the notches of the upper crossmember of the lower frame in which the hooks are housed. On the other hand, there is the possibility of releasing the hooks from the notches by slightly lifting the floor, then making a lateral movement of a few centimeters from this floor, also releasing the hooks from the projecting parts; the hooks are then brought into a position where they are no longer surmounted by parts of the lower cross member of the upper frame, the current width of which is less than the width of the upper cross member of the lower frame, and the floor can finally be released fully up. A floor can therefore be removed by a successively vertical displacement, then lateral and again vertical, and of course by a succession of reverse movements it is possible to set up a floor, this always without separating the upper frames from the lower frames of the load-bearing structure. The presence of a longitudinal plinth of the floor, cooperating with a fixing lug secured to a post of the upper frame is sufficient to laterally block the floor in normal times and thus avoids the possibility of releasing this floor accidentally out of the notches.

Si les traverses supérieures des cadres de la structure porteuse sont constituées par des profilés ayant une section en "U", les encoches précitées, prévues pour recevoir les crochets des planchers à fixer, sont ménagées sur le bord supérieur des ailes de ces profilés de section en "U".If the upper crosspieces of the frames of the supporting structure are formed by profiles having a "U" section, the aforementioned notches, provided for receiving the hooks of the floors to be fixed, are formed on the upper edge of the wings of these section profiles in "U".

Quant aux parties en saillie des traverses inférieures des cadres, celles-ci peuvent résulter d'ergots formés sur un fer plat fixé, par exemple par soudage, sous chacune desdites traverses inférieures, réalisées notamment comme des tubes de section carrée ou rectangulaire.As for the projecting parts of the lower crossmembers of the frames, these can result from lugs formed on a fixed flat iron, for example by welding, under each of said lower crossmembers, produced in particular as tubes of square or rectangular section.

Dans une variante, les traverses inférieures des cadres de la structure porteuse sont constituées par des profilés ayant une section en "U" renversé, avec des ailes tournées vers le bas qui comportent localement des déformations tournées vers l'extérieur formant lesdites parties en saillie, ce qui évite toute pièce rapportée.In a variant, the lower crosspieces of the frames of the supporting structure are constituted by profiles having an inverted "U" section, with downwardly facing wings which locally include outwardly facing deformations forming said projecting parts, which avoids any patches.

De toute façon, l'invention sera mieux comprise à l'aide de la description qui suit, en référence au dessin schématique annexé représentant, à titre d'exemples non limitatifs, une forme d'exécution de ce dispositif de fixation pour planchers d'échafaudages, ainsi qu'une variante :

  • Figure 2 est une vue en perspective partielle d'un dispositif de fixation conforme à la présente invention ;
  • Figure 3 est une vue en coupe verticale d'une extrémité de plancher avec crochet engagé dans une encoche de traverse supérieure de cadre ;
  • Figure 4 est une vue en coupe similaire à figure 3, mais montrant le crochet dégagé de l'encoche ;
  • Figure 5 est une vue en plan par dessus de l'extrémité d'un plancher, illustrant son blocage latéral ;
  • Figure 6 est une vue en élévation, correspondant à figure 5 ;
  • Figure 7 est une vue partielle en perspective d'un cadre, représentant une variante de l'invention.
In any case, the invention will be better understood with the aid of the description which follows, with reference to the appended schematic drawing representing, by way of nonlimiting examples, an embodiment of this fixing device for floors of scaffolding, as well as a variant:
  • Figure 2 is a partial perspective view of a fixing device according to the present invention;
  • Figure 3 is a vertical sectional view of a floor end with hook engaged in a notch of the upper cross member of the frame;
  • Figure 4 is a sectional view similar to Figure 3, but showing the hook released from the notch;
  • Figure 5 is a plan view from above of the end of a floor, illustrating its lateral locking;
  • Figure 6 is an elevational view, corresponding to Figure 5;
  • Figure 7 is a partial perspective view of a frame, showing a variant of the invention.

En se référant aux figures 2 à 6, qui représentent une première forme d'exécution, l'invention reprend une structure porteuse de type généralement connu constituée de cadres fermés, comportant notamment une traverse supérieure 1 et une traverse inférieure 2, réunies par des poteaux tubulaires 3,4. On considère ici plus particulièrement un cadre inférieur 5 et un cadre supérieur 6, superposés et assemblés entre eux par emmanchement de leurs poteaux respectifs 3,4, et un plancher d'échafaudage 8 qui doit être fixé, par une extrémité, au niveau de la jonction entre les deux cadres 5,6. L'extrémité du plancher 8 est pourvue, pour sa fixation, de deux crochets 7 tournés vers le bas, les crochets 7 étant ici obtenus à partir d'un profil plat plié de façon adéquate.Referring to Figures 2 to 6, which show a first embodiment, the invention incorporates a generally known type of load-bearing structure consisting of closed frames, in particular comprising an upper cross member 1 and a lower cross member 2, joined by posts tubular 3,4. We consider here more particularly a lower frame 5 and an upper frame 6, superimposed and assembled together by fitting their respective posts 3,4, and a scaffolding floor 8 which must be fixed, by one end, at the level of the junction between the two frames 5,6. The end of the floor 8 is provided, for its fixing, with two hooks 7 facing downwards, the hooks 7 here being obtained from a flat profile folded adequately.

Comme le montrent plus particulièrement les figures 2 à 4, la traverse supérieure 1 du cadre inférieur 5 est constituée par un profilé ayant une section en "U", avec deux ailes parallèles 10, situées dans des plans verticaux et tournées vers le haut. Chaque aile 10 comporte deux encoches 11, qui sont ménagées en correspondance avec les positions des crochets 7 du plancher 8 et qui débouchent sur le bord supérieur de cette aile 10, la largeur des encoches 11 étant en relation avec celle des crochets 7.As shown more particularly in Figures 2 to 4, the upper cross member 1 of the lower frame 5 is formed by a profile having a "U" section, with two parallel wings 10, located in vertical planes and facing upwards. Each wing 10 has two notches 11 which are arranged in correspondence with the positions of the hooks 7 of the floor 8 and which open onto the upper edge of this wing 10, the width of the notches 11 being in relation to that of the hooks 7.

La traverse inférieure 2 du cadre supérieur 6 est réalisée sous la forme d'un tube de section rectangulaire, dont la largeur d est inférieure à la largeur D de la traverse supérieure 1 du cadre inférieur 5. Un fer plat 12 est soudé sous la face inférieure de la traverse inférieure 2. Le fer plat 12 comporte sur chacun de ses bords longitudinaux deux ergots 13, faisant saillie latéralement, situés en correspondance avec les positions des encoches 11 de la traverse supérieure 1 ; au droit des ergots 7, le fer plat 12 possède localement une largeur augmentée, sensiblement égale à celle D de la traverse supérieure 1. Ainsi, considérant les deux cadres 5,6 superposés, chaque encoche 11 de la traverse supérieure 1 du cadre inférieur 5 est surmontée par un ergot 13 de la traverse inférieure 2 du cadre supérieur 6.The lower cross member 2 of the upper frame 6 is produced in the form of a tube of rectangular section, the width d of which is less than the width D of the upper cross member 1 of the lower frame 5. A flat iron 12 is welded under the face lower of the lower cross member 2. The flat iron 12 has on each of its longitudinal edges two lugs 13, projecting laterally, located in correspondence with the positions of the notches 11 of the upper cross member 1; in line with the lugs 7, the flat iron 12 locally has an increased width, substantially equal to that D of the upper cross member 1. Thus, considering the two superimposed frames 5, 6, each notch 11 of the upper cross member 1 of the lower frame 5 East surmounted by a lug 13 of the lower cross member 2 of the upper frame 6.

En se référant plus particulièrement aux figures 2 et 3, lorsqu'un plancher 8 est normalement fixé à la structure porteuse, les deux crochets 7 équipant l'extrémité considérée du plancher 8 sont logés respectivement dans les encoches 11 correspondantes de la traverse supérieure 1 du cadre inférieur 5. La présence des ergots 13 au-dessus des encoches 11 limite le déplacement direct vers le haut des crochets 7, donc empêche le dégagement accidentel ou volontaire du plancher 8 par un simple mouvement vertical.Referring more particularly to FIGS. 2 and 3, when a floor 8 is normally fixed to the support structure, the two hooks 7 fitted to the considered end of the floor 8 are housed respectively in the corresponding notches 11 of the upper cross member 1 of the lower frame 5. The presence of the pins 13 above the notches 11 limits the direct upward movement of the hooks 7, therefore preventing accidental or voluntary release of the floor 8 by a simple vertical movement.

Par contre, comme l'illustre la figure 4, chaque crochet 7 peut être dégagé volontairement de l'encoche 11 correspondante par un léger déplacement vertical, suivi par un déplacement latéral qui décale le crochet 7 par rapport à l'ergot 13 surmontant cette encoche 11. En raison de la largeur réduite d de la traverse supérieure 2, le crochet 7 trouve alors au-dessus de lui un espace libre, permettant de le déplacer de nouveau vers le haut, sans rencontrer d'obstacle. Ainsi, l'extrémité du plancher 8 peut être entièrement dégagée. Naturellement, la même opération peut être réalisée simultanément aux deux extrémités du plancher 8 fixées par le même dispositif, si bien que le plancher peut être enlevé de la structure porteuse sans nécessité de séparer les cadres inférieur 5 et supérieur 6. Il va de soi qu'une séquence de déplacements inverse, comportant aussi une composante latérale, permet d'engager les crochets 7 dans les encoches 11 sans écarter le cadre supérieur 6 du cadre inférieur 5, donc de rajouter un plancher 8 sur une structure porteuse préexistante sans démonter cette structure.On the other hand, as illustrated in FIG. 4, each hook 7 can be released voluntarily from the corresponding notch 11 by a slight vertical displacement, followed by a lateral displacement which shifts the hook 7 relative to the lug 13 surmounting this notch 11. Due to the reduced width d of the upper cross member 2, the hook 7 then finds a free space above it, making it possible to move it again upwards, without encountering any obstacle. Thus, the end of the floor 8 can be entirely released. Naturally, the same operation can be carried out simultaneously at the two ends of the floor 8 fixed by the same device, so that the floor can be removed from the support structure without the need to separate the lower frames 5 and upper 6. It goes without saying that 'a reverse movement sequence, also comprising a lateral component, makes it possible to engage the hooks 7 in the notches 11 without removing the upper frame 6 from the lower frame 5, therefore adding a floor 8 to a pre-existing supporting structure without dismantling this structure .

En se référant aux figures 5 et 6, un blocage latéral de l'extrémité du plancher 8, fixée sur la structure porteuse par le dispositif précédemment décrit, est assuré en mettant à profit une plinthe longitudinale 14 de ce plancher 8. A son extrémité, la plinthe 14 est prolongée par une courte tige horizontale 15, qui est engagée dans une patte de fixation 16 solidaire d'un poteau 4 du cadre supérieur 6. Ainsi, le plancher 8 est immobilisé latéralement en temps normal, et il ne peut être dégagé. Pour pouvoir extraire les crochets 7 des encoches 11, il convient d'abord d'enlever la plinthe 14.With reference to FIGS. 5 and 6, a lateral blocking of the end of the floor 8, fixed to the support structure by the device described above, is ensured by taking advantage of a longitudinal plinth 14 of this floor 8. At its end, the plinth 14 is extended by a short horizontal rod 15, which is engaged in a fixing lug 16 secured to a post 4 of the upper frame 6. Thus, the floor 8 is immobilized laterally in normal times, and it cannot be released . To be able to extract the hooks 7 from the notches 11, it is first necessary to remove the plinth 14.

Enfin, la figure 7 représente une variante, concernant la réalisation de la traverse inférieure 2 d'un cadre 6. La traverse inférieure 2 est constituée ici par un profilé ayant une section en "U" renversé, la largeur courante de cette traverse 2 étant, comme précédemment, inférieure à celle de la traverse supérieure (non représentée). Les ailes 17 du profilé, tournées vers le bas, comportent localement des déformations 18 tournées vers l'extérieur, qui forment des parties en saillie réalisant l'équivalent des ergots 13 de la forme d'exécution précédemment décrite, les déformations 18 étant situées en correspondance avec les positions des encoches de la traverse supérieure.Finally, FIG. 7 represents a variant, concerning the production of the lower crossmember 2 of a frame 6. The lower crossmember 2 here consists of a section having an inverted "U" section, the current width of this crossmember 2 being , as before, lower than that of the upper crossmember (not shown). The wings 17 of the profile, facing the bottom, locally contain deformations 18 facing outwards, which form protruding parts producing the equivalent of the lugs 13 of the embodiment described above, the deformations 18 being located in correspondence with the positions of the notches of the crossmember superior.

Bien entendu, l'invention ne se limite pas aux seules formes d'exécution de ce dispositif de fixation pour planchers d'échafaudages qui ont été décrites ci-dessus, à titre d'exemples ; elle en embrasse, au contraire, toutes les variantes de réalisation et d'application respectant le même principe. Ainsi, l'on ne s'éloignerait pas du cadre de l'invention par des modifications de formes constructives, notamment pour les traverses inférieures du cadre et pour les parties latéralement en saillie de ces traverses.Of course, the invention is not limited to the sole embodiments of this fixing device for scaffolding floors which have been described above, by way of examples; on the contrary, it embraces all of the variant embodiments and applications respecting the same principle. Thus, one would not depart from the framework of the invention by modifications of constructive forms, in particular for the lower crossmembers of the frame and for the laterally projecting parts of these crossmembers.

Claims (5)

Dispositif de fixation pour planchers d'échafaudages sur des structures porteuses constituées par des cadres préfabriqués, les planchers (8) étant équipés à leurs extrémités de crochets (7) tournés vers le bas et prévus pour coopérer avec des traverses horizontales supérieures (1) de cadres (5) appartenant à la structure porteuse, tandis que des traverses horizontales inférieures (2) de cadres (6) appartenant à la même structure porteuse limitent le déplacement vers le haut des crochets (7) appuyés sur les traverses supérieures (1), caractérisé en ce que les traverses supérieures (1) des cadres (5) comportent sur leurs flancs (10) des encoches (11) ménagées en correspondance avec les positions des crochets (7) des planchers à fixer (8) et prévues pour recevoir ces crochets (7), et en ce que les traverses inférieures (2) des cadres (6), de largeur (d) inférieure à celle (D) des traverses supérieures (1), comportent des parties latéralement en saillie (13 ; 18) situées en correspondance avec les positions des encoches (11) des traverses supérieures (1), de telle sorte qu'un crochet (7) engagé dans une encoche (11) d'une traverse supérieure (1) soit surmonté par une partie en saillie (13 ; 18) d'une traverse inférieure (2) qui limite son déplacement direct vers le haut, mais puisse être dégagé de l'encoche (11) et de la partie en saillie (13 ; 18) correspondante par un déplacement comportant une composante latérale.Fixing device for scaffolding floors on load-bearing structures constituted by prefabricated frames, the floors (8) being equipped at their ends with hooks (7) turned downwards and intended to cooperate with upper horizontal crosspieces (1) of frames (5) belonging to the support structure, while lower horizontal crosspieces (2) of frames (6) belonging to the same support structure limit the upward movement of the hooks (7) supported on the upper crosspieces (1), characterized in that the upper crosspieces (1) of the frames (5) have on their sides (10) notches (11) formed in correspondence with the positions of the hooks (7) of the floors to be fixed (8) and intended to receive these hooks (7), and in that the lower crosspieces (2) of the frames (6), of width (d) less than that (D) of the upper crosspieces (1), comprise laterally projecting parts (13 ; 18) situated in correspondence with the positions of the notches (11) of the upper crossmembers (1), so that a hook (7) engaged in a notch (11) of an upper crossmember (1) is surmounted by a projecting part (13; 18) of a lower crossmember (2) which limits its direct movement upwards, but can be released from the notch (11) and from the corresponding projecting part (13; 18) by a movement comprising a lateral component. Dispositif de fixation pour planchers d'échafaudages selon la revendication 1, caractérisé en ce que les traverses supérieures (1) des cadres (5) de la structure porteuse sont constituées par des profilés ayant une section en "U", et en ce que les encoches (11) précitées, prévues pour recevoir les crochets (7) des planchers (8) à fixer, sont ménagées sur le bord supérieur des ailes (10) de ces profilés (1) de section en "U".Fixing device for scaffolding floors according to claim 1, characterized in that the upper crosspieces (1) of the frames (5) of the supporting structure consist of profiles having a "U" section, and in that the the aforementioned notches (11), designed to receive the hooks (7) of the floors (8) to be fixed, are formed on the upper edge of the wings (10) of these profiles (1) of "U" section. Dispositif de fixation pour planchers d'échafaudages selon la revendication 1 ou 2, caractérisé en ce que les parties en saillie des traverses inférieures (2) des cadres (6) de la structure porteuse résultent d'ergots (13) formés sur un fer plat (12) fixé, par exemple par soudage, sous chacune desdites traverses inférieures (2), réalisées notamment comme des tubes de section carrée ou rectangulaire.Fastening device for scaffolding floors according to claim 1 or 2, characterized in that the projecting parts of the lower crossmembers (2) of the frames (6) of the supporting structure result from lugs (13) formed on a flat iron (12) fixed, for example by welding, under each of said lower crosspieces (2), produced in particular as tubes of square or rectangular section. Dispositif de fixation pour planchers d'échafaudages selon la revendication 1 ou 2, caractérisé en ce que les traverses inférieures des cadres (6) de la structure porteuse sont constituées par des profilés (2) ayant une section en "U" renversé, avec des ailes (17) tournées vers le bas qui comportent localement des déformations (18) tournées vers l'extérieur formant lesdites parties en saillie.Fastening device for scaffolding floors according to claim 1 or 2, characterized in that the lower crosspieces of the frames (6) of the supporting structure consist of profiles (2) having an inverted "U" section, with downwardly facing wings (17) which have outwardly facing deformations (18) forming said protruding parts. Dispositif de fixation pour planchers d'échafaudages selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le blocage latéral du plancher (8), empêchant en temps normal son dégagement des encoches (11), est assuré par une plinthe longitudinale (14) de ce plancher (8), coopérant avec une patte de fixation (16) solidaire d'un poteau (4) appartenant à un cadre (6) de la structure porteuse.Fixing device for scaffolding floors according to any one of claims 1 to 4, characterized in that the lateral blocking of the floor (8), normally preventing its release from the notches (11), is ensured by a longitudinal plinth (14) of this floor (8), cooperating with a fixing lug (16) integral with a post (4) belonging to a frame (6) of the supporting structure.
EP91420451A 1990-12-17 1991-12-16 Connecting arrangement for seaffold platforms Expired - Lifetime EP0491634B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9016583A FR2670525A1 (en) 1990-12-17 1990-12-17 FIXING DEVICE FOR SCAFFOLDING FLOORS.
FR9016583 1990-12-17

Publications (2)

Publication Number Publication Date
EP0491634A1 true EP0491634A1 (en) 1992-06-24
EP0491634B1 EP0491634B1 (en) 1994-09-28

Family

ID=9403917

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91420451A Expired - Lifetime EP0491634B1 (en) 1990-12-17 1991-12-16 Connecting arrangement for seaffold platforms

Country Status (3)

Country Link
EP (1) EP0491634B1 (en)
DE (1) DE69104336T2 (en)
FR (1) FR2670525A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0849418A1 (en) * 1996-12-18 1998-06-24 Sgb Services Plc A scaffolding assembly
WO1998041712A1 (en) * 1997-03-19 1998-09-24 Peri Gmbh Dismountable scaffolding with base plates arranged on cross struts
EP0878594A1 (en) * 1997-05-16 1998-11-18 Sgb Services Plc Improvements in or relating to a scaffolding component

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1684250B1 (en) * 1967-04-14 1971-03-04 Kurt Gester Sliding protection against lifting of work platforms on scaffolding
FR2307099A1 (en) * 1975-04-11 1976-11-05 Self Lock Echafaudages PREFABRICATED SCAFFOLDING
DE2724932A1 (en) * 1977-06-02 1978-12-07 Eberhard Layher LATCH FOR METAL PIPE SCAFFOLDING

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1684250B1 (en) * 1967-04-14 1971-03-04 Kurt Gester Sliding protection against lifting of work platforms on scaffolding
FR2307099A1 (en) * 1975-04-11 1976-11-05 Self Lock Echafaudages PREFABRICATED SCAFFOLDING
DE2724932A1 (en) * 1977-06-02 1978-12-07 Eberhard Layher LATCH FOR METAL PIPE SCAFFOLDING

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0849418A1 (en) * 1996-12-18 1998-06-24 Sgb Services Plc A scaffolding assembly
US5894909A (en) * 1996-12-18 1999-04-20 Sgb Services Plc Scaffolding
WO1998041712A1 (en) * 1997-03-19 1998-09-24 Peri Gmbh Dismountable scaffolding with base plates arranged on cross struts
US6223856B1 (en) * 1997-03-19 2001-05-01 Peri Gmbh Dismountable scaffolding with base plates arranged on cross struts
EP0878594A1 (en) * 1997-05-16 1998-11-18 Sgb Services Plc Improvements in or relating to a scaffolding component
US5918700A (en) * 1997-05-16 1999-07-06 Sgb Services Plc Scaffolding component

Also Published As

Publication number Publication date
FR2670525A1 (en) 1992-06-19
FR2670525B1 (en) 1993-02-26
EP0491634B1 (en) 1994-09-28
DE69104336T2 (en) 1995-02-23
DE69104336D1 (en) 1994-11-03

Similar Documents

Publication Publication Date Title
EP0076774B1 (en) Tubular scaffolding, method of erecting and horizontal transom member for this scaffolding
FR2516141A1 (en) Scaffolding erection procedure - has two base frames braced to take next level of guard rails and decking
FR2475099A1 (en) MODULAR FORMWORK WITH FALLING HEADS FOR CONCRETE FLOORS
CH616197A5 (en)
FR3050749A1 (en) MODULE FOR REALIZING A ROTARY SITE STAIRCASE, ASSEMBLY COMPRISING AT LEAST ONE SUCH MODULE AND SITE STAIRCASE COMPRISING AT LEAST ONE SUCH ASSEMBLY
EP0491634B1 (en) Connecting arrangement for seaffold platforms
FR3013066A1 (en) WORK PLATFORM IN CONVERTIBLE ENCORBELLEMENT
EP2767499B1 (en) Splinting device for connecting two strut members and assembly comprising two strut members and such splinting devices
FR2887574A1 (en) Balustrade for scaffolding of building, has articulated fixation finger cooperating with bush of vertical frame to permit pivoting of balustrade around horizontal axis while placing balustrade
EP0364358B1 (en) Seat support for public transport vehicles and seat equipped with this support
FR2762630A1 (en) Construction grille for suspended false ceiling
FR2913707A1 (en) DEMOUNTABLE SCAFFOLDING AND METHOD FOR INSTALLATION AND REMOVAL OF SUCH SCAFFOLDING
FR3065977B1 (en) ASSEMBLY OF STRUCTURAL ELEMENTS FOR FORMING AERIAL PARKING WITH FLOORS, AND AIR PARKING WITH CORRESPONDING FLOORS
EP2085537B1 (en) Method of securely installing and removing a rolling scaffold, secure guardrails used and scaffold obtained
EP2299027B1 (en) Scaffolding structure, in particular for façade scaffolding
EP2177691A1 (en) Scaffolding structure including stairs
FR2949490A1 (en) Balustrade for use on facade scaffold in building, has fixation units oriented obliquely inward with respect to plane of balustrade in order to place balustrade, in mounted position, at outside of plane of posts of structure of scaffold
FR2529931A1 (en) Prefabricated scaffolding construction element with automatic clearance compensation
FR2866666A1 (en) Scaffolding for fixing along facade, has butt joint graft extending floor beyond bracket and transversal gate situated in vertical plane of bracket, where butt joint graft includes frame and platform
FR2740514A1 (en) Gravity retaining gravity hook for quick mounting and demounting of frames or posts fitted to tubular structures
FR2929306A1 (en) V-shaped integrated lock hook for support of shuttering wall form in concrete building construction, has locking units occupying retracted position in hook and locking position and associated with overlocking units to manual unlock
FR2820769A1 (en) Safety railing panel has lower and upper fixings at ends and intermediate support piece for temporary holding during mounting on scaffolding tubes
EP0014623A1 (en) Bracing for a scaffold
FR3068376A1 (en) SYSTEM FOR FASTENING A STIFFENER TO A SCAFFOLDING
EP2554772A2 (en) Swinging door

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE GB SE

17P Request for examination filed

Effective date: 19920804

17Q First examination report despatched

Effective date: 19930723

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE GB SE

REF Corresponds to:

Ref document number: 69104336

Country of ref document: DE

Date of ref document: 19941103

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19941124

EAL Se: european patent in force in sweden

Ref document number: 91420451.6

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20071205

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20071212

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20071213

Year of fee payment: 17

EUG Se: european patent has lapsed
GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20081216

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090701

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20081216

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20081217