SU25910A1 - Clamp for holding the parts to be welded during electric arc welding - Google Patents

Description

In the production of new structures by the method of electric welding, the welding places or seams should be opened at an angle of 45 ° to 90 °, there should be a gap of 2 mm at the top of the corner, and this gap should be uniform along the entire length of the seam. The edges of the welded structures must be located exactly opposite each other and firmly securely fastened.

Existing clips do not completely solve this problem as they are either too cumbersome and can be used only for the part for which they are made, or do not provide the ability to accurately install the seam. An assembly method using temporary precast holes, when holes are punched or drilled into the structure and | The structure is connected with bolts or heats (or holes for bolts and existing clamps are cut in the seam itself) requires a lot of time, unnecessary working hands and reduces the mechanical strength of the finished structure, since during testing

d & are flowing in places

designs are often welding holes made for assembly purposes.

The present invention aims at eliminating the aforementioned drawbacks and consists in the constructive implementation of clamps for holding the parts to be welded.

In the drawing. 1 g 2 depict the view. side view and top view of the clip for sheet material; FIG. 3 is a side view of a clamp for welding sheets at a right angle; FIG. 4- detail clamps; FIG. 5 and 6, a modified form of the clips.

The clamp for the welded in the butt sheets d, d (Fig. 1) consists of a backing rail b, located under the welding seam, which can be pushed and pressed against the product with the help of a thin wiring c, c; wedge in, wedged over. the seam between the cheeks of two pivotally interconnected link g strips a, a. Slats a, and made lifting on the screws. The thickness of the tie bar in, in should correspond to the width of the gap allowed between the sheets to be welded, for example, as mentioned at the beginning of the description, can be equal to two millimeters.

The assembly of the clamp is as follows. The bolt c, b, freely passed through the holes in the base rail b (Fig. 4) is passed through the weld gap. On the other side of the seam, straps a, o are put on the projecting end of the tie, and then the whole hinge is raised up by screwing in the screws, at the same time the end of the tie is gripped by strips a, a, acting like a vice. At the same screws, pressing on the edge of the seam d, d, they are pressed tightly against the rail.

Ragulir pressure of one or another screw, you can accurately set against each other the edges of the seam, correcting the inaccuracy of rolling or fit. Screw heads can be made either in the form of nuts or in the form of sheep. For ease of removal of the clamp, after it is passed, the ring can be welded from the bottom vfL to the scrap to lay (for example, if the clamp is clamped by the action of shrinkage stitches). Rail b should be curved along the outline of the walls of the structure at the very seam. For example, as shown in FIG. 3, npi -connection of sheets at a right angle The rail b is also bent at a right angle. In the manufacture of various drums, the proposed clamp can also be applied, for which the rail should have a curved P8 radius equal to pa, to the radius of the part being manufactured. The rail b may be either short and made of iron, or, in cases where enhanced heat removal is required to avoid material deformations or burnout, it can be taken along a length equal to the length of the whole P1va and made of red copper.

The width of the tie-in, in, is selected depending on the size of the assembled structure, i.e. from the point of view of its mechanical strength.

The stitch modification (Figs. 5 and 6) applied a more simplified device for wedges consisting of a solid strip O with a hole in the middle; The grip of the grommet in, in this case, is carried out with the help of a wedge Zi from hardened steel, one side of which is made smooth, and the other is cut like a file. The wedge is placed on the notched side of the tie-in at, at. The wedging can be done either with screws (Fig. 6) or with wedges b and 6i.

When assembling structures made of sheet material with a frame made of angle brackets в, в (Fig. 1-3), it can be welded temporarily to the corner of the frame and continue to flow when assembling as with the above clip; After welding the open parts of the seam, the welded strips are cut with a chisel, which is very easy with their small, for example, two millimeter thickness.

The subject matter of the invention

Claims (2)

1. Clamp for holding the parts to be welded during electric arc welding, characterized by the use of a wedge over the welding seam of the product d, e and a thin strand c, in through which is passed through the weld gap, designed to push and press the base rail b located under the welding seam. 2. In the clamp according to claim 1, application for seizing in, in the strips o, a, a hinge-link associated with each other by a link r. l: m to the author's testimony of N. A. Sidin  25910 fig I fig 2 g f 3 Fig 5 "g.