FR2704606A1 - Weld-on clamp for tubular assemblies - Google Patents

Abstract

The invention relates to a clamp to be welded onto the end of the tubes (8) to be fastened to a vertical tube (5) by means of the said clamp so that two adjacent tubes (8) fixed to one and the same tube (5) develop in one and the same plane without it being necessary for one of them to be bent round. The said clamp includes a semicylindrical skirt (6) to which the tube or tubes (8) are welded via their end, and asymmetrically extends the collar (7) fastened to the vertical tube (5) by a wedge (key) or some other means. The invention can be used for the manufacture of all tubular elements which are to play a part in the construction of tubular constructions, particularly scaffolding.

Description

 WELDING FLANGE FOR TUBULAR ASSEMBLIES.

 For the assembly of tubes, generally used for the construction of scaffolding, it is used flanges constituted by a simple half-collar welded at each end of the horizontal tubes which must be assembled to the vertical tubular elements, said flanges having a plane of symmetry containing their fixing means located in the axis of said tubes to which they are welded. And this, whether they are key flanges, jaw, or having any other means of attachment to the vertical tube.

 So that the horizontal tubes intended for such an assembly must be counter-bent at at least one of their ends so that two horizontal tubes fixed at the same level on the same vertical tube are in extension of one another, this which makes manufacturing more expensive.

 The object of the present invention therefore aims to avoid this drawback.

 For this, a clamp, comprising a fixing means, such as a key or the like, intended for fixing a horizontal tube to a vertical tube, is characterized in that it is extended along its same axis, asymmetrically with respect to the plane perpendicular to its axis which contains said fixing means, by a semi-cylindrical skirt on which the accessory tube or tubes are welded by their end orthogonally to the axis of said collar and in the direction in the plane which is suitable for the arrangement provided for the tubular construction in which said flange is intended to be introduced, said skirt and the collar which it extends marrying together, with its wings carrying the fixing means, and in a vertical profile, the shape of an L.

 So that two flanges thus equipped being aligned head-to-tail contiguously on the same vertical tube, the horizontal tubes welded to said skirt of each flange will naturally develop in the same plane regardless of the direction which will be given to them, without that it was necessary to reverse none.

 The accompanying drawings show an embodiment of the invention, given by way of non-limiting example.

 Figure 1 is a side elevational view of two horizontal tubes placed on the same vertical tube by means of flanges of known type, formed of a simple collar welded at the end of each tube, its plane of symmetry passing through the axis of said tubes, according to the known device.

 Figure 2 is an exploded view of a flange, object of the invention, associated with a key type tightening system, the key is shown externally to said flange, in the axis of the housing to receive it.

 Figure 3 is a vertical profile view of two flanges according to the invention, equipped with horizontal tubes welded at the end, said flanges being placed head-to-tail contiguously, showing the alignment of the tubes perfectly contained in the same horizontal plane .

 Figure 4 is a sectional view of the flange according to the invention, along a horizontal plane passing through the axis of the lights can receive the locking key.

 According to FIG. 1, it can be seen that the horizontal tubes 1 and 2 welded at the end to the collars 3 and 4, constructed according to the known form described in the preamble, must have at least one bent end so that the two tubes 1 and 2 fixed to a same vertical tube 5 via the collars 3 and 4 are found to develop in the same plane.

 According to Figures 2 and 4 the flange according to the invention comprises the semi-cylindrical skirt 6 which extends the collar 7 is on which are or can be welded, at the end, the tube or tubes 8, 8A and 8B, the collar 7 being normally extended by the wings 9 and 10 which support the clamping means of the vertical tube, which gives the assembly, seen from the vertical profile, the shape of an L.

 The wings 9 and 10 include the slots 11 and 12 intended to receive the key 13, the end 14 of which is folded back after insertion of the key into the slot 11 to make it captive, being then retained by the stopper 15 cut across said light 11.

 The device being thus constituted, it is understood, according to FIG. 3, that two tubes 8 welded at the end each at the level of the skirt 7 of two collars 6, orthogonally to the axis of the latter will automatically develop in the same horizontal plane, when such flanges will be placed head to tail on the same vertical tube 5.

 The manufacture of the assembly (flange + tube) is therefore simplified, the tubes no longer requiring the operation necessary to counter them, and the presence of the skirt extending the collar does not cause any loss of metal, its cutting being effected. by head-to-tail stamping of successive collars, nor loss of time, its bending constituting the same operation as the bending of the collar 7 itself, which does not increase the labor cost.

 The invention can be used for the manufacture of assembly elements which should participate in the construction of tubular structures, and in particular scaffolding.

Claims (2)

 1 ")) Welding flange for tubular assemblies, characterized in that the clamp (7), comprising its fixing means (13), is extended along its same axis, asymmetrically relative to the plane perpendicular to its axis which contains said fixing means, by a semi-cylindrical skirt (6), said skirt (6) and the collar (7) which it extends fitting together, with its wings carrying the fixing means (13), and according to a vertical profile, a L shape.  2 ") Welding flange for tubular assemblies according to claim 1, characterized in that the tubes (8) are welded at each of their ends to the semi-cylindrical skirt (6), orthogonally to the axis of said skirt, in the direction which is suitable for the arrangement provided for the tubular construction in which said flange is intended to be introduced.