EP0004806B1 - Scaffolding elements provided with connecting means - Google Patents

Scaffolding elements provided with connecting means Download PDF

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Publication number
EP0004806B1
EP0004806B1 EP19790400187 EP79400187A EP0004806B1 EP 0004806 B1 EP0004806 B1 EP 0004806B1 EP 19790400187 EP19790400187 EP 19790400187 EP 79400187 A EP79400187 A EP 79400187A EP 0004806 B1 EP0004806 B1 EP 0004806B1
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EP
European Patent Office
Prior art keywords
scaffolding
tube
spigot
socket
cross
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.)
Expired
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EP19790400187
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German (de)
French (fr)
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EP0004806A1 (en
Inventor
Louis Jean
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Somefran D'exploitation Des Brevets Mefran Ste
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Somefran D'exploitation Des Brevets Mefran Ste
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Publication of EP0004806A1 publication Critical patent/EP0004806A1/en
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Publication of EP0004806B1 publication Critical patent/EP0004806B1/en
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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
    • E04G7/301—Scaffolding bars or members with non-detachably fixed coupling elements for connecting bars or members which are parallel or in end-to-end relation

Definitions

  • the invention generally relates to scaffolding elements, such as for example scaffolding frames, comprising a connection device for connecting the elements together.
  • the scaffolding consists of elements, which can be identical or different, mounted one after the other, and which for this include tubular elements which come to fit on or in elements associated tubulars.
  • scaffolding elements It is often necessary, with such scaffolding elements, to provide more or less simple systems making it possible to position and immobilize the elements in rotation with respect to one another. It is also often necessary to make special arrangements to prevent scaffolding elements supplied by one manufacturer from being mixed and used with scaffolding elements supplied by other manufacturers.
  • the regulations in force impose certain standards, for safety, on these scaffolding elements, and it is particularly inadvisable to use indifferently by mixing more or less corresponding elements supplied by various manufacturers, because of the differences existing in these elements between the various security, locking, blocking, positioning systems, etc. used in these elements.
  • a scaffold made up of disparate elements is much less safe than a scaffold made up of elements supplied by the same manufacturer, which have been designed to be assembled together.
  • scaffolding elements comparable to frames, include a connection device constituted by female and male parts provided at each end. parallel tubes of said frames, a female and male part being provided at each end thereof.
  • connection device constituted by female and male parts provided at each end. parallel tubes of said frames, a female and male part being provided at each end thereof.
  • French Patent No. 1,385,704 it is already known to assemble tubular elements end to end by fitting a male part into a female part, this assembly being locked in rotation by cooperation between two longitudinal grooves provided on said said female and male connection parts.
  • the invention proposes a device for connecting scaffolding elements which simultaneously makes it possible to solve all these problems.
  • the invention provides scaffolding elements, such as for example scaffolding frames each comprising two identical and parallel sections of tubes transversely spaced and rigidly connected together, the two opposite ends of each section of tube forming respectively a male part and a female part, intended to be connected by interlocking respectively to a female part and to a male part of another adjacent scaffolding element, the two sections of tubes of each element being arranged head to tail, that the male part of the end of one tube is at the level of the female part of the end of the other tube and vice versa, characterized in that each male part is formed by a constriction so as to have a slightly smaller external diameter to the internal diameter of the female part, said female parts of said element each have at least one longitudinal groove and a transverse groove or groove, e t said male parts of said element each have at least one longitudinal groove, said longitudinal grooves or transverse groove being formed by deformation, for example by shrinking, knurling or drawing, of the above-mentioned section of tube, so that the cross-sectional contour of
  • the part of a scaffolding shown in FIG. 1 essentially comprises a scaffolding frame 10, two scaffolding elements 11 respectively forming a starting element and a crowning element of the scaffolding, an upper element 12 of a class type - .sique, and two starting tubes 13 comprising a base 14 of support on the ground.
  • Each element 11 essentially comprises a transverse bar 15 which is provided at its ends with two sleeves or sections of cylindrical tubes 16 extending perpendicular to the bar, and which are intended to allow the element 11 to slide on the two tubes. departure 13.
  • means not shown make it possible to immobilize the element 11 on the tubes 13 at the desired height.
  • each element 11 is provided with two sections of tubes 17 and 18 extending perpendicular to the crossbar 15, which are spaced apart from each other by a predetermined distance, and which form a male part and a female part respectively.
  • These sections of tubes 17 and 18 are intended to allow the mounting of the scaffolding frame 10, which consists essentially of two parallel and identical tubes 19 each ending in a male part 19 'and a female part 19 ".
  • the two tubes 19 are rigidly connected to each other in any suitable manner, for example by a spacer 20 substantially in the form of a U as shown in FIG. 1.
  • the two tubes 19 can be placed head to tail, that is to say that the lower end of a tube 19 forming a male part 19 ′ is at the same level as the lower end of the other tube 19 forming a female end 19 ".
  • the female part 19 'of a tube 19 of the frame 10 is intended to be fitted onto the male part 17 of the lower element 11 starting from the scaffold, while the lower male part 19' of the other tube 19 of the frame 10 intended to be fitted into the female part 18 of this lower element 11.
  • a crowning element 11, identical to the lower element 11 will be mounted on the upper part of the frame 10 while being turned over as shown in FIG. 1, and its two sleeves 16 will allow the mounting of the upper element 12 including the two parallel tubes 21 can slide inside the sleeves 16 and then be locked or locked in position by means of locking or blocking means of a conventional type, not shown. It is understood that the adjustment of the height of the upper element 12 relative to the ground is carried out very easily, over a fairly wide range, due to the sliding mounting of the starting elementll on the tubes 13, and the sliding mounting of the upper element 12 on the crowning element 11.
  • FIG. 2 is an enlarged sectional view of the lower male part 19 ′ of a tube 19 of the frame 10 fitted into the female part 18 of the scaffold starting element 11.
  • the male part 19 ′ and the female part 18 are formed in a manner which will be described in great detail here, from cylindrical tubes with circular section, which are identical, that is to say which have the same 'outer diameter and the same thickness.
  • the male part 19 ′ comprises a first part 25 which is formed for example by constriction from the tube 19, and which is also cylindrical with circular section, with an outside diameter which is very slightly less than the inside diameter of the starting tube, so as to be able to be fitted substantially without play or with a relatively very small play inside a starting tube.
  • the male part 19 ′ then comprises a second part 26, which extends to the end of the male part, and which is formed from the constricted part 25 with longitudinal grooves 27, for example three in number regularly or equiangularly distributed around the longitudinal axis 28 of the tube 19, these three longitudinal grooves 27 can be formed by deformation of the part 26 inwards, for example by stamping or knurling.
  • the male part 19 ′ finally ends in a flange 29 folded inwards, forming a part of reduced diameter.
  • the female part 18 firstly comprises at its end a cylindrical tubular part 30 with circular section, having the same outside diameter and the same inside diameter as the starting tube. This part 30 extends over a height substantially equal to the height of the aforementioned constricted part 25 of the male part 19 '.
  • the female part 18 then comprises a part 31, which is formed with respect to the cylindrical part with circular section 30 with longitudinal grooves 32, corresponding to the longitudinal grooves 27 of the male part 19 ', and which are also formed by deformation of the tube inward, for example by stamping or knurling.
  • the length of the part 31 is less than the length of the corresponding part 26 of the male part 19 '.
  • female part 18 comprises a new cylindrical part 33 of circular section, having the same outside diameter and the same inside diameter as the starting tube, that is to say which is not deformed.
  • This part 33 extends to a circular transverse groove or groove 34 formed by stamping, knurling or shrinking, which forms a projection inside the female part 18, at the level where the end flange 29 will come. of the part 19 'and which forms a stop for this rim 29.
  • the upper end of the female part 18 is flared as indicated at 35, to facilitate the fitting of the male part 19 '.
  • connection device thanks to the male and female parts which have just been described, allows positioning in translation and automatic angular orientation of the tubular scaffolding elements with respect to each other, the male part 19 'being fitted into the female part 18 until its rim 29 abuts on the groove 34 of the female part 18, and being immobilized in rotation inside this female part, due to the cooperation of the longitudinal grooves 27 and 32 formed in the male part and the female part respectively, this cooperation being substantially free of play.
  • blocking or locking means of a conventional type, will prohibit the separation of the male and female parts after fitting the male part into the female part.
  • FIG 7 there is shown a partial exploded perspective view of scaffolding spans formed with elements according to the invention.
  • the frames 10 are assembled vertically as shown, by fitting their male and female parts 19 'and 19 "into the female and male parts respectively of the upper and lower frames 10, braces 40 coming to be fixed on the tubes 19 of two frames 10 parallel and consecutive at the same horizontal level, to connect them together.
  • connection device according to the invention and the scaffolding elements by presenting application prohibit a user from mixing the scaffolding elements which have just been described with scaffolding elements originating from another manufacturer, and to build a scaffold from disparate elements from various sources.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)

Description

L'invention concerne généralement des éléments d'échaufaudage, tels que par exemple des cadres d'échafaudage, comprenant un dispositif de raccordement pour raccorder les éléments entre eux.The invention generally relates to scaffolding elements, such as for example scaffolding frames, comprising a connection device for connecting the elements together.

On sait que, de façon générale, les échafaudages sont constitués par des éléments, qui peuvent être identiques ou différents, montés les uns à la suite des autres, et qui comprennent pour cela des éléments tubulaires qui viennent s'emboîter sur ou dans des éléments tubulaires associés.We know that, in general, the scaffolding consists of elements, which can be identical or different, mounted one after the other, and which for this include tubular elements which come to fit on or in elements associated tubulars.

Il est souvent nécessaire, avec de tels éléments d'échafaudage, de prévoir des systèmes plus ou moins simples permettant de positionner et d'immobiliser en rotation les éléments les uns par rapport aux autres. Il est également souvent nécessaire de prévoir des dispositions spéciales pour éviter que des éléments d'échafaudage fournis par un fabricant soient mélangés et utilisés avec des éléments d'échafaudage fournis par d'autres fabricants. Les règlements en vigueur imposent en effet certaines normes, pour la sécurité, à ces éléments d'échafaudage, et il est particulièrement déconseillé d'utiliser indifféremment en les mélangeant des éléments plus ou moins correspondants fournis par divers fabricants, en raison des différences existant dans ces éléments entre les divers systèmes de sécurité, de verrouillage, de blocage, de positionnement, etc. utilisés dans ces éléments. Un échafaudage constitué d'éléments disparates est beaucoup moins sûr qu'un échafaudage constitué d'éléments fournis par un même fabricant, qui ont été prévus pour être montés ensemble.It is often necessary, with such scaffolding elements, to provide more or less simple systems making it possible to position and immobilize the elements in rotation with respect to one another. It is also often necessary to make special arrangements to prevent scaffolding elements supplied by one manufacturer from being mixed and used with scaffolding elements supplied by other manufacturers. The regulations in force impose certain standards, for safety, on these scaffolding elements, and it is particularly inadvisable to use indifferently by mixing more or less corresponding elements supplied by various manufacturers, because of the differences existing in these elements between the various security, locking, blocking, positioning systems, etc. used in these elements. A scaffold made up of disparate elements is much less safe than a scaffold made up of elements supplied by the same manufacturer, which have been designed to be assembled together.

Il est déjà connu par l'Addition n° 91 474 au brevet français principal n° 1 495 634, que des éléments d'échafaudage, assimilables à des cadres, comprennent un dispositif de raccordement constitué par des parties femelle et mâle prévues à chaque extrémité des tubes parallèles desdits cadres, une partie femelle et mâle étant prévues à chaque extrémité de celui-ci. En outre, selon le brevet français n° 1 385 704, on sait déjà assembler bout à bout des éléments tubulaires par emboîtement d'une partie mâle dans une partie femelle, cet assemblage étant bloqué en rotation par coopération entre deux rainures longitudinales prévues sur lesdites parties femelle et mâle de raccordement.It is already known from Addition 91 91 to the main French patent n 1 495 634, that scaffolding elements, comparable to frames, include a connection device constituted by female and male parts provided at each end. parallel tubes of said frames, a female and male part being provided at each end thereof. In addition, according to French Patent No. 1,385,704, it is already known to assemble tubular elements end to end by fitting a male part into a female part, this assembly being locked in rotation by cooperation between two longitudinal grooves provided on said said female and male connection parts.

De plus, il est également connu d'après le brevet français n° 2 273 220 de réaliser l'emboîtement de deux tubes de diamètres différents, le tube de diamètre inférieur formant la partie mâle et venant en butée contre une rainure polygonale faisant radialement saillie vers l'intérieur du tube de grand diamètre, formant partie femelle.In addition, it is also known from French Patent No. 2 273 220 to carry out the fitting of two tubes of different diameters, the tube of smaller diameter forming the male part and abutting against a polygonal groove projecting radially towards the inside of the large diameter tube, forming a female part.

Aucun de ces documents ne permet de résoudre les problèmes d'assemblage sûr des éléments d'échafaudage entre eux, de positionnement et d'orientation desdits éléments les uns par rapport aux autres, et d'éviter le montage d'un échafaudage constitué d'éléments disparates de provenances diverses.None of these documents makes it possible to solve the problems of secure assembly of the scaffolding elements together, of positioning and orientation of said elements with respect to each other, and of avoiding the mounting of a scaffolding consisting of disparate elements from various sources.

Dans ce but, l'invention propose un dispositif de raccordement d'éléments d'échafaudage qui permet simultanément de résoudre tous ces problèmes.To this end, the invention proposes a device for connecting scaffolding elements which simultaneously makes it possible to solve all these problems.

Pour cela, l'invention propose des éléments d'échafaudage, tels que par exemple des cadres d'échafaudage comportant chacun deux tronçons de tubes identiques et parallèles transversalement espacés et reliés rigidement entre eux, les deux extrémités opposées de chaque tronçon de tube formant respectivement une partie mâle et une partie femelle, destinées à être raccordées par emboîtement respectivement à une partie femelle et à une partie mâle d'un autre élément d'échafaudage adjacent, les deux tronçons de tubes de chaque élément étant disposés tête-bêche, de façon que la partie mâle de l'extrémité d'un tube soit au niveau de la partie femelle de l'extrémité de l'autre tube et réciproquement, caractérisés en ce que chaque partie mâle est formée par un rétreint pour avoir un diamètre extérieur légèrement inférieur au diamètre intérieur de la partie femelle, lesdites parties femelles dudit élément présentent chacune au moins une rainure longitudinale et une rainure ou gorge transversale, et lesdites parties mâles dudit élément présentent chacune au moins une rainure longitudinale, lesdites rainures longitudinales ou gorge transversale étant formées par déformation, par exemple par rétreint, moletage ou emboutissage, du tronçon de tube précité, de manière que le contour en section transversale de la surface extérieure d'une partie mâle épouse, lors dudit emboîtement, avec un jeu relativement très faible, le contour en section transversale de la surface intérieure d'une partie femelle, et que l'extrémité de ladite partie mâle vienne en butée contre ladite rainure ou gorge transversale de la partie femelle dudit autre élément d'échafaudage adjacent, tandis que l'extrémité de ladite partie femelle vient en butée contre un épaulement formé par ledit rétreint de la partie mâle.For this, the invention provides scaffolding elements, such as for example scaffolding frames each comprising two identical and parallel sections of tubes transversely spaced and rigidly connected together, the two opposite ends of each section of tube forming respectively a male part and a female part, intended to be connected by interlocking respectively to a female part and to a male part of another adjacent scaffolding element, the two sections of tubes of each element being arranged head to tail, that the male part of the end of one tube is at the level of the female part of the end of the other tube and vice versa, characterized in that each male part is formed by a constriction so as to have a slightly smaller external diameter to the internal diameter of the female part, said female parts of said element each have at least one longitudinal groove and a transverse groove or groove, e t said male parts of said element each have at least one longitudinal groove, said longitudinal grooves or transverse groove being formed by deformation, for example by shrinking, knurling or drawing, of the above-mentioned section of tube, so that the cross-sectional contour of the external surface of a male part marries, during said fitting, with a relatively very small clearance, the contour in cross section of the internal surface of a female part, and that the end of said male part comes into abutment against said groove or transverse groove of the female part of said other adjacent scaffolding element, while the end of said female part abuts against a shoulder formed by said constriction of the male part.

L'invention sera mieux comprise et d'autres buts, caractéristiques détails et avantages de celle-ci apparaîtront plus clairement au cours de la description explicative qui va suivre faite en référence aux dessins schématiques annexés donnés uniquement à titre d'exemple illustrant un mode de réalisation de l'invention et dans lesquels :

  • La figure 1 est une vue schématique en perspective de deux éléments d'échafaudage, permettant l'application du dispositif de raccordement selon l'invention ;
  • la figure 2 est une vue en section illustrant l'emboîtement d'une partie mâle et d'une partie femelle du dispositif de raccordement selon l'inyention ;
  • la figure 3 est une vue en section selon la ligne III-III de la figure 2 ;
  • la figure 4 est une vue en section selon la ligne IV-IV de la figure 2 ;
  • la figure est une vue en section selon la ligne V-V de la figure 2 ;
  • la figure est une vue en perspective d'une partie mâle et d'une partie femelle ; et
  • la figure 7 est une vue partielle en perspective de travées d'échafaudage.
The invention will be better understood and other objects, characteristics, details and advantages thereof will appear more clearly during the explanatory description which follows, made with reference to the appended schematic drawings given solely by way of example illustrating a method of realization of the invention and in which:
  • Figure 1 is a schematic perspective view of two scaffolding elements, allowing the application of the connection device according to the invention;
  • Figure 2 is a sectional view illustrating the fitting of a male part and a female part of the connection device according to the invention;
  • Figure 3 is a sectional view along line III-III of Figure 2;
  • Figure 4 is a sectional view along the line IV-IV of Figure 2;
  • Figure is a sectional view along line VV of Figure 2;
  • the figure is a perspective view of a male part and a female part; and
  • Figure 7 is a partial perspective view of scaffolding spans.

On a donc représenté schématiquement dans les dessins un dispositif de raccordement de deux éléments tubulaires d'échafaudage selon l'invention, ainsi que deux sortes d'éléments d'échafaudage présentant application de ce dispositif.There is therefore shown schematically in the drawings a device for connecting two tubular scaffolding elements according to the invention, as well as two kinds of scaffolding elements presenting application of this device.

La partie d'un échafaudage représentée en figure 1 comprend essentiellement un cadre d'échafaudage 10, deux éléments d'échafaudage 11 formant respectivement un élément de départ et un élément de couronnement de l'échafaudage, un élément supérieur 12 d'un type clas- .sique, et deux tubes de départ 13 comportant une base 14 d'appui sur le sol.The part of a scaffolding shown in FIG. 1 essentially comprises a scaffolding frame 10, two scaffolding elements 11 respectively forming a starting element and a crowning element of the scaffolding, an upper element 12 of a class type - .sique, and two starting tubes 13 comprising a base 14 of support on the ground.

Chaque élément 11 comprend essentiellement une barre transversale 15 qui est pourvue à ses extrémités de deux manchons ou tronçons de tubes cylindriques 16 s'étendant perpendiculairement à la barre, et qui sont destinés à permettre le coulissement de l'élément 11 sur les deux tubes de départ 13. Bien entendu, des moyens non représentés permettent d'immobiliser l'élément 11 sur les tubes 13 à la hauteur voulue.Each element 11 essentially comprises a transverse bar 15 which is provided at its ends with two sleeves or sections of cylindrical tubes 16 extending perpendicular to the bar, and which are intended to allow the element 11 to slide on the two tubes. departure 13. Of course, means not shown make it possible to immobilize the element 11 on the tubes 13 at the desired height.

De plus, la barre transversale 15 de chaque élément 11 est pourvue de deux tronçons de tubes 17 et 18 s'étendant perpendiculairement à la barre transversale 15, qui sont écartés entre eux d'une distance prédéterminée, et qui forment une partie mâle et une partie femelle respectivement. Ces tronçons de tubes 17 et 18 sont destinés à permettre le montage du cadre d'échafaudage 10, qui est constitué essentiellement de deux tubes parallèles et identiques 19 se terminant chacun par une partie mâle 19' et une partie femelle 19". Les deux tubes 19 sont reliés rigidement entre eux de toute façon appropriée par exemple par une entretoise 20 sensiblement en forme de U comme représenté en figure 1.In addition, the crossbar 15 of each element 11 is provided with two sections of tubes 17 and 18 extending perpendicular to the crossbar 15, which are spaced apart from each other by a predetermined distance, and which form a male part and a female part respectively. These sections of tubes 17 and 18 are intended to allow the mounting of the scaffolding frame 10, which consists essentially of two parallel and identical tubes 19 each ending in a male part 19 'and a female part 19 ". The two tubes 19 are rigidly connected to each other in any suitable manner, for example by a spacer 20 substantially in the form of a U as shown in FIG. 1.

On remarquera que, avantageusement, les deux tubes 19 peuvent être placés tête-bêche, c'est-à-dire que l'extrémité inférieure d'un tube 19 formant une partie mâle 19' est au même niveau que l'extrémité inférieure de l'autre tube 19 formant une extrémité femelle 19".It will be noted that, advantageously, the two tubes 19 can be placed head to tail, that is to say that the lower end of a tube 19 forming a male part 19 ′ is at the same level as the lower end of the other tube 19 forming a female end 19 ".

Comme représenté en figure 1, la partie femelle 19' d'un tube 19 du cadre 10 est destinée à être emmanchée sur la partie mâle 17 de l'élément 11 inférieur de départ de l'échafaudage, tandis que la partie mâle inférieure 19' de l'autre tube 19 du cadre 10 destinée à être emboîtée dans la partie femelle 18 de cet élément inférieur 11.As shown in FIG. 1, the female part 19 'of a tube 19 of the frame 10 is intended to be fitted onto the male part 17 of the lower element 11 starting from the scaffold, while the lower male part 19' of the other tube 19 of the frame 10 intended to be fitted into the female part 18 of this lower element 11.

Un élément de couronnement 11, identique à l'élément 11 inférieur sera monté sur la partie supérieure du cadre 10 en étant retourné comme indiqué en figure 1, et ses deux manchons 16 permettront le montage de l'élément supérieur 12 dont les deux tubes parallèles 21 pourront coulisser à l'intérieur des manchons 16 et être ensuite verrouillés ou bloqués en position grâce à des moyens de verrouillage ou de blocage d'un type classique, non représentés. On comprend que le réglage de la hauteur de l'élément supérieur 12 par rapport au sol s'effectue très facilement, sur une gamme assez large, en raison du montage coulissant de l'élémentll de départ sur les tubes 13, et du montage coulissant de l'élément supérieur 12 sur l'élément 11 de couronnement.A crowning element 11, identical to the lower element 11 will be mounted on the upper part of the frame 10 while being turned over as shown in FIG. 1, and its two sleeves 16 will allow the mounting of the upper element 12 including the two parallel tubes 21 can slide inside the sleeves 16 and then be locked or locked in position by means of locking or blocking means of a conventional type, not shown. It is understood that the adjustment of the height of the upper element 12 relative to the ground is carried out very easily, over a fairly wide range, due to the sliding mounting of the starting elementll on the tubes 13, and the sliding mounting of the upper element 12 on the crowning element 11.

On va maintenant décrire plus en détail en référence aux figures 2 à 6, la structure des parties mâles et femelles des éléments d'échafaudage, et le dispositif de raccordement selon l'invention.We will now describe in more detail with reference to Figures 2 to 6, the structure of the male and female parts of the scaffolding elements, and the connection device according to the invention.

Pour faciliter la compréhension, on peut supposer que la figure 2 est une vue agrandie en section de la partie mâle inférieure 19' d'un tube 19 du cadre 10 emboîtée dans la partie femelle 18 de l'élément 11 de départ d'échafaudage.To facilitate understanding, it can be assumed that FIG. 2 is an enlarged sectional view of the lower male part 19 ′ of a tube 19 of the frame 10 fitted into the female part 18 of the scaffold starting element 11.

La partie mâle 19' et la partie femelle 18 sont formées d'une façon qui va être décrite mainte- ment en détail, à partir de tubes cylindriques à section circulaire, qui sont identiques, c'est-à-dire qui ont le même' diamètre extérieur et la même épaisseur.The male part 19 ′ and the female part 18 are formed in a manner which will be described in great detail here, from cylindrical tubes with circular section, which are identical, that is to say which have the same 'outer diameter and the same thickness.

La partie mâle 19' comprend une première partie 25 qui est formée par exemple par rétreint à partir du tube 19, et qui est également cylindrique à section circulaire, avec un diamètre extérieur qui est très légèrement inférieur au diamètre intérieur du tube de départ, de façon à pouvoir être emboîtée sensiblement sans jeu ou avec un jeu relativement très faible à l'intérieur d'un tube de départ. La partie mâle 19' comprend ensuite une seconde partie 26, qui s'étend jusqu'à l'extrémité de la partie mâle, et qui est formée à partir de la partie rétreinte 25 avec des rainures longitudinales 27, par exemple au nombre de trois réparties de façon régulière ou équiangulaire autour de l'axe longitudinal 28 du tube 19, ces trois rainures longitudinales 27 pouvant être formées par déformation de la partie 26 vers l'intérieur, par exemple par emboutissage ou par moletage.The male part 19 ′ comprises a first part 25 which is formed for example by constriction from the tube 19, and which is also cylindrical with circular section, with an outside diameter which is very slightly less than the inside diameter of the starting tube, so as to be able to be fitted substantially without play or with a relatively very small play inside a starting tube. The male part 19 ′ then comprises a second part 26, which extends to the end of the male part, and which is formed from the constricted part 25 with longitudinal grooves 27, for example three in number regularly or equiangularly distributed around the longitudinal axis 28 of the tube 19, these three longitudinal grooves 27 can be formed by deformation of the part 26 inwards, for example by stamping or knurling.

Ces trois rainures 27 s'étendent sur toute la hauteur de la partie 26. La partie mâle 19' se termine enfin par un rebord 29 replié vers l'intérieur, formant une partie de diamètre réduit.These three grooves 27 extend over the entire height of the part 26. The male part 19 ′ finally ends in a flange 29 folded inwards, forming a part of reduced diameter.

La partie femelle 18 comprend tout d'abord à son extrémité une partie 30 tubulaire cylindrique à section circulaire, ayant le même diamètre extérieur et le même diamètre intérieur que le tube de départ. Cette partie 30 s'étend sur une hauteur sensiblement égale à la hauteur de la partie rétreinte 25 précitée de la partie mâle 19'.The female part 18 firstly comprises at its end a cylindrical tubular part 30 with circular section, having the same outside diameter and the same inside diameter as the starting tube. This part 30 extends over a height substantially equal to the height of the aforementioned constricted part 25 of the male part 19 '.

La partie femelle 18 comprend ensuite une partie 31, qui est formée par rapport à la partie cylindrique à section circulaire 30 avec des rainures longitudinales 32, correspondant aux rainures longitudinales 27 de la partie mâle 19', et qui sont également formées par déformation du tube vers l'intérieur, par exemple par emboutissage ou moletage. La longueur de la partie 31 est inférieure à la longueur de la partie correspondante 26 de la partie mâle 19'.The female part 18 then comprises a part 31, which is formed with respect to the cylindrical part with circular section 30 with longitudinal grooves 32, corresponding to the longitudinal grooves 27 of the male part 19 ', and which are also formed by deformation of the tube inward, for example by stamping or knurling. The length of the part 31 is less than the length of the corresponding part 26 of the male part 19 '.

Après la partie 31, la partie femelle 18 comprend une nouvelle partie 33 cylindrique à section circulaire, ayant le même diamètre extérieur et le même diamètre intérieur que le tube de départ c'est-à-dire qui n'est pas déformée. Cette partie 33 s'étend jusqu'à une gorge ou rainure transversale circulaire 34 formée par emboutissage, par moletage ou par rétreint, qui forme une saillie à l'intérieur de la partie femelle 18, au niveau où viendra le rebord d'extrémité 29 de la partie 19' et qui forme butée pour ce rebord 29.After part 31, female part 18 comprises a new cylindrical part 33 of circular section, having the same outside diameter and the same inside diameter as the starting tube, that is to say which is not deformed. This part 33 extends to a circular transverse groove or groove 34 formed by stamping, knurling or shrinking, which forms a projection inside the female part 18, at the level where the end flange 29 will come. of the part 19 'and which forms a stop for this rim 29.

On comprend donc que la somme des longueurs des parties 31 et 33 de la partie femelle 18 est égale à la longueur de la partie 26 et de la partie mâle 19'.It is therefore understood that the sum of the lengths of the parts 31 and 33 of the female part 18 is equal to the length of the part 26 and of the male part 19 '.

On remarquera que l'extrémité supérieure de la partie femelle 18 est évasée comme indiqué en 35, pour faciliter l'emboîtement de la partie mâle 19'.It will be noted that the upper end of the female part 18 is flared as indicated at 35, to facilitate the fitting of the male part 19 '.

On comprend facilement que le dispositif de raccordement selon l'invention, grâce aux parties mâles et femelles qui viennent d'être décrites, permet un positionnement en translation et une orientation angulaire automatique des éléments tubulaires d'échafaudage les uns par rapport aux autres, la partie mâle 19' étant emboîtée dans la partie femelle 18 jusqu'à ce que son rebord 29 vienne en butée sur la rainure 34 de la partie femelle 18, et étant immobilisée en rotation à l'intérieur de cette partie femelle, en raison de la coopération des rainures 27 et 32 longitudinales formées dans la partie mâle et la partie femelle respectivement, cette coopération étant sensiblement sans jeu.It is easily understood that the connection device according to the invention, thanks to the male and female parts which have just been described, allows positioning in translation and automatic angular orientation of the tubular scaffolding elements with respect to each other, the male part 19 'being fitted into the female part 18 until its rim 29 abuts on the groove 34 of the female part 18, and being immobilized in rotation inside this female part, due to the cooperation of the longitudinal grooves 27 and 32 formed in the male part and the female part respectively, this cooperation being substantially free of play.

D'autre part, des moyens de blocage ou de verrouillage, d'un type classique, interdiront la séparation des parties mâle et femelle après emboîtement de la partie mâle dans la partie femelle.On the other hand, blocking or locking means, of a conventional type, will prohibit the separation of the male and female parts after fitting the male part into the female part.

En figure 7, on a représenté une vue partielle en perspective éclatée de travées d'échafaudage formées avec des éléments selon l'invention. Les cadres 10 sont assemblés verticalement comme représenté, par emboîtage de leurs parties mâles et femelles 19' et 19" dans les parties femelles et mâles respectivement des cadres 10 supérieurs et inférieurs, des contre-ventements 40 venant se fixer sur les tubes 19 de deux cadres 10 parallèles et consécutifs au même niveau horizontal, pour les relier entre eux.In Figure 7, there is shown a partial exploded perspective view of scaffolding spans formed with elements according to the invention. The frames 10 are assembled vertically as shown, by fitting their male and female parts 19 'and 19 "into the female and male parts respectively of the upper and lower frames 10, braces 40 coming to be fixed on the tubes 19 of two frames 10 parallel and consecutive at the same horizontal level, to connect them together.

On comprend également que le dispositif de raccordement selon l'invention, et les éléments d'échafaudage en présentant application interdisent à un utilisateur de mélanger les éléments d'échafaudage qui viennent d'être décrits avec des éléments d'échafaudage provenant de chez un autre fabricant, et de constituer un échafaudage à partir d'éléments disparates de provenances diverses.It is also understood that the connection device according to the invention, and the scaffolding elements by presenting application prohibit a user from mixing the scaffolding elements which have just been described with scaffolding elements originating from another manufacturer, and to build a scaffold from disparate elements from various sources.

Claims (6)

1. Scaffolding elements (10, 11) such for instance as scaffolding frames (10) comprising each one two like parallel crosswise spaced and rigidly interconnected tube sections (19), both opposite ends (19', 19") of each tube section (19) forming a spigot portion (19') and a socket portion (19"), respectively, adapted to be connected through interfitted jointing to a socket portion (18, 19") and to a spigot portion (17, 19"), respectively, of another adjacent scaffolding element (11, 10), both tube sections (19) of each element (10) being arranged in head-to-foot relationship, so that the spigot portion (19') of the end of one tube be on a level with the socket portion (19") of the end of the other tube and conversely, characterized in that each spigot portion (19') is shaped through swaging to an outside diameter slightly less than the inside diameter of the socket portion (18, 19"), said socket portions (19") of said element (10) having each one at least one longitudinal groove (32) and a cross groove or circumferential groove (34), said spigot portions (19') of said element (10) having each one at least one longitudinal groove (27), said longitudinal grooves or cross grooves (27, 32, 34) being shaped through distortion for instance through swaging, rolling or stamping of said tube sections (19), so that the cross-sectional contour of the outer surface of a spigot portion (19') upon said jointing conforms with a relatively very small clearance to the cross-sectional contour of the inner surface of a socket portion (18, 19"), the end (29) of said spigot portion (19') abutting against said cross or circumferential groove (34) of said socket portion (18, 19") of said other adjacent scaffolding elements (10, 11) where as the end (35) of said socket portion (18, 19") abuts against a shoulder provided by said swaging of the spigot portion (19').
2. Elements according to claim 1, characterized in that the cross or circumferential groove (34) of each socket portion (19") is formed in said tube section (19) at a distance from the tube end substantially equal to the length of said spigot portion (19').
3. Elements according to one of the foregoing claims, characterized in that each aforesaid spigot portion (19') terminates in an inward bent flange (29) to form a part of reduced diameter.
4. Elements according to one of the foregoing claims, characterized in that the ends (35) of the tube sections (19) forming the socket portions (19") are flared.
5. Elements according to one of the foregoing claims, characterized in that they comprise means for locking and blocking the spigot portions (19') fitted into the socket portions (18, 19").
6. Elements according to one of the foregoing claims, characterized in that they comprise a scaffolding starting or capping element (11) consisting of a cross bar (15) comprising at its opposite ends two tubular sleeves (16) extending in perpendicular relation to the bar (15) and enabling said starting or capping element to slide on two vertical uprights (13), said bar (15) comprising between its ends two parallel tube sections spaced apart by a distance equal to the spacing of both tube sections (19) of one aforesaid scaffolding frame (10) and forming one aforesaid spigot portion (17) and one aforesaid socket portion (18), respectively.
EP19790400187 1978-03-29 1979-03-21 Scaffolding elements provided with connecting means Expired EP0004806B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7809069A FR2421252A1 (en) 1978-03-29 1978-03-29 DEVICE FOR CONNECTING TWO TUBULAR ELEMENTS, AND CORRESPONDING SCAFFOLDING ELEMENTS TO PREFABRICATED FRAMES
FR7809069 1978-03-29

Publications (2)

Publication Number Publication Date
EP0004806A1 EP0004806A1 (en) 1979-10-17
EP0004806B1 true EP0004806B1 (en) 1982-09-22

Family

ID=9206371

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19790400187 Expired EP0004806B1 (en) 1978-03-29 1979-03-21 Scaffolding elements provided with connecting means

Country Status (8)

Country Link
EP (1) EP0004806B1 (en)
AT (1) AT360733B (en)
DE (1) DE2963709D1 (en)
DK (1) DK129179A (en)
ES (1) ES240796Y (en)
FR (1) FR2421252A1 (en)
GR (1) GR75063B (en)
PT (1) PT69402A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8803245U1 (en) * 1988-03-10 1989-05-24 AL-KO Kober AG, 8871 Kötz Pipe

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SE432795B (en) * 1982-01-25 1984-04-16 Goeteborg Staellningsgruppen CUTTING DEVICE FOR LONG-TERM POSITION ELEMENTS IN A BUILDING POSITION OR LIKE
DE3546045C2 (en) * 1985-12-24 1996-05-02 Plettac Ag Scaffold tube
DE3762002D1 (en) * 1986-03-20 1990-04-26 Siemens Ag ARRANGEMENT FOR SOLVABLY CONNECTING TWO PIPE PARTS.
ZA922968B (en) * 1991-04-26 1992-12-30 Adwin Products Pty Ltd Improvements in scaffold arrangements
NL1000890C2 (en) * 1995-07-27 1997-01-31 Sgb Holdings Tube system in particular for use in a scaffolding construction, as well as tube usable in the tube system.
DE50113342D1 (en) * 2000-12-29 2008-01-17 Altrad Plettac Assco Gmbh Scaffolding with a scaffolding tube
DE102008012142A1 (en) * 2008-03-01 2009-09-03 Weiss, Johannes Konsolstirngeländer
DE102009002854A1 (en) * 2009-05-06 2010-11-11 Doka Industrie Gmbh Scaffolding element, scaffolding system with a scaffolding element and method for setting up a scaffolding system
DE102011001796A1 (en) 2011-04-05 2012-10-11 Wilhelm Layher Verwaltungs-Gmbh scaffolding post
WO2012163340A1 (en) 2011-06-01 2012-12-06 Wilhelm Layher Verwaltungs-Gmbh Arrangement of a scaffolding component and of a vertical scaffolding element
DE102019200770A1 (en) * 2019-01-23 2020-07-23 Peri Gmbh Scaffolding element with a node, scaffolding with such a scaffolding element and method for producing a scaffolding element

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FR1385704A (en) * 1963-12-24 1965-01-15 Assembly method in particular for tubular elements and assemblies in accordance with those obtained by applying the present method or similar method
FR91474E (en) * 1966-09-06 1968-06-21 Folding and removable scaffolding
DE2257389A1 (en) * 1972-11-23 1974-06-20 Fix Betonbau Schalung Ruest TECK CONNECTION FOR STEEL PIPE SUPPORTS, PIPE SCAFFOLDINGS AND THE LIKE
GB1469807A (en) * 1974-05-31 1977-04-06 Zimm Zamm Ag Telescoping members

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8803245U1 (en) * 1988-03-10 1989-05-24 AL-KO Kober AG, 8871 Kötz Pipe

Also Published As

Publication number Publication date
DK129179A (en) 1979-09-30
FR2421252B1 (en) 1983-01-14
FR2421252A1 (en) 1979-10-26
ES240796Y (en) 1979-08-16
EP0004806A1 (en) 1979-10-17
ATA205979A (en) 1980-06-15
DE2963709D1 (en) 1982-11-04
PT69402A (en) 1979-04-01
AT360733B (en) 1981-01-26
GR75063B (en) 1984-07-13
ES240796U (en) 1979-03-16

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