SU846202A1 - Stand for welding beam longitudinal seams with preliminary bending - Google Patents

Description

(54) STAND FOR WELDING LONG-TERM BEAMS

This invention relates to devices for assembly and welding.

A stand for assembling and welding of multi-unit metal structures, comprising a portal, carrying clamps and movable, mounted on racks with the possibility of moving towards each other, grips, side clamps installed with the possibility of embedding in racks, and placed on the rods of hydraulic cylinders. The hydraulic cylinders are mounted on guide posts and are doubled, and the supports for the products are made floating in the direction perpendicular to the longitudinal axis of the portal III.

However, in this stand, when the beam is deflected, the amount of required deflection is set by the deflection limiters only in the cent of the beam, and the edges of the beam remain rigidly clamped. This does not allow welding of long beams and welding of beams with areas of different rigidity due to distortions in the deflection geometry at the well-known stand.

Also known is a stand for welding longitudinal seams of spinal beams with a preliminary deflection, which contains a frame on which the deflection nodes are mounted, made in the form of V mounted in guide carriages

5 with grips for beam C2.

But . This stand does not provide welding of variable stiffness beams, as well as welding of long beams due to distortions of the deflection geometry, since the deflection of the beam occurs at the extreme points relative to the central support.

The purpose of the invention is to improve the quality by providing welding

“5 long beams of variable stiffness.

This goal is achieved by the fact that in the proposed stand for welding longitudinal seams of beams, containing a frame on which the assemblies are mounted

20 deflections made in the form of beam grippers installed in guide carriages, the carriages are mounted along the entire length of the ParzentZ stand on both sides of its longitudinal axis

Claims (2)

25 and are provided with adjustable stops, and hydrocylin 30 is fixed on the frame, along its longitudinal axis at the location of each pair of carriages with the possibility of interaction with the frame. FIG. 1 shows the stand, a general view; in fig. 2 shows a section A-A in FIG. in fig. 3 shows a section BB in FIG. The stand for welding longitudinal welds of beams with preliminary reverse bending consists of frame 1, on which hydraulic cylinders 2 and guides 3 are rigidly fixed with pitch. Carriage 4 is mounted by means of rollers 5 with the possibility of vertical movement in guides 3 pgm 1 and contains grips b, interacting with beam 7, and adjustable stops 8, interacting with frame 1 To move beam 7 for assembly and welding, drive rollers 9 mounted rotatably in bearings 10 mounted on frame 1 are used. fixing the position of the beam 7, a retractable stop 11 is provided fixed to the frame 1. The stand operates as follows. The roll 7 is fed along the drive rollers 9 to the extended stop 11. At the same time, from the limit switch located on the stop 11, the beam 7 and the hydraulic cylinders 2 are engaged The rod of each hydraulic cylinder 2, moving up, rests on the beam 7 and lifts it all the way into the grippers 6 of the carriage 4, after which each upright carriage 4 starts to move along the guides of the frame 1 by means of rollers 5. The support stop 8 mounted on the carriage reaches the protrusion of the frame 1 and. stops her movement. Each deflection of individual sections of the beam is created by an unequal stroke. Each pair of carriages 4, which depends on the location of the stop 8. When all the stops 8 on all the carriages 4 reach the projections of frame 1, the beam will be in the bent position and it will be welded. After the end of welding, a command is given to expand the beam 7 and the hydraulic cylinders 2. The rods of the hydraulic cylinders 2 are lowered. At the same time, all the carriages 4 and the beams 7 are lowered under their own weight. When lowering, the beam 7 is placed on the drive rollers 9. After all the rods of the hydraulic cylinders 2 are lowered to the lowest position, a pressure relay is triggered, which commands the lowering of the stop 11. The beam 7 rolls out of the stander by the drive rollers 9. Formula for the invention of longitudinal-seam welding beams with a preliminary deflection ,. Preferably, box-shaped girders comprising a frame on which the deflection assemblies are mounted, made in the form of beams installed in guide carriages with grips, are different. In order to improve quality by providing welding of long beams of variable stiffness, the carriages are mounted along the entire length of the stand in pairs on both sides of its longitudinal axis and equipped with adjustable stops, and on the frame along its longitudinal axis at the location of each pair of carriages with the possibility of interaction with the frame, fixed hydraulic cylinders. Sources of information taken into account during the examination 1. USSR author's certificate No. 570470, cl. At 23 K 37/04, 3.05.73. 2. USSR author's certificate number 508373, cl. In 23 K 37/04, 3.06.74 (prototype).  I 1-1 / 77 G7.