SU423595A1 - EXTENDABLE PLATE RING FOR ASSEMBLING AND WELDING - Google Patents

Description

one

The invention relates to the field of welding technology, in particular, to the backing rings for welding ring seams, and can be used for welding thin-skinned large-diameter ribs.

There is an extensible backing ring for assembling and welding ring seams, containing the sectors "located between their unclamping mechanisms, consisting of two parts.

However, the sectors of such a ring must be of increased rigidity, which excludes the possibility of their bending in the zone of temporary deformations during welding.

In order to increase the assembly accuracy and quality of welded joints in the construction of the ring, the sectors are made of flexible sheet sheets, and one part of each unclamping mechanism is made in the form of a fixed body rigidly connected to one of the sectors, with a guide, in which another part is installed razzhimtsoto 1 mehanizm, svredeina in the form of a nonsun, rigidly connected with another sector and spring-loaded relative to the body with the help of cup springs.

FIG. 1 shows the proposed ring, a general view; “And FIG. 2 - opening mechanism; in fig. 3 is a section along AA of FIG. 2; pas figs. 4 shows a section along BB and in FIG. 2

The ring consists of separate flexible sectors 1 interconnected by expansion mechanisms.

The main elements of the unclamping mechanism are the body 2 with ry6Kois 3n the slider 4 with the sponge 5 moving in the cylindrical guide body as the nut 6 is rotated.

Between the housing 2 and the end of the nut, the bridges are set of cup springs 7. Shanks 8 and 9 in the housing and the slider, which fit tightly when assembling the ring in the grooves 10 of the forks 11. Attaching to sectors 1 prevents the opening mechanism from shifting relative to the sectors in the direction of the axis of both welded, 4aiiKH, so that the axes of the grooves 12 of the entire set of sectors and expansion mechanisms are located in one plane.

Each mechanism is poured out by a set of inserts of 13 different thicknesses (through 1 mm), inserted into the gap between the jaws 3 and 5 before welding.

The assembly of the ring from the sectors and expanding mechanisms is carried out in the following sequence.

The sliders 4 iBcero of the clamp set of the clamping mechanisms are offset relative to the housings 2 and the distance / g between the jaws (distance} 1 / g is equal to the thickness of the smallest liner) and fixed in this position with screws 14.

3

The expansion mechanisms are connected to the sectors and shredded in 15.

Assembled in a similar fashion, the ring is branched inside of one of the C1 welded shells. The center of the form (of the i.kai-ia.BKH 12 ring is combined (on the welded edge, after which the subsequent rotation of the nuts 6. Ring is pressed); 0; there are forces of the area between the sidewall to sectors sufficient to hold the ring in the sidewall.

A second welded shell is put on the ring and the ring is finally unclamped. In the irocea of the final unclamping, the outer surfaces of the ring sectors closely adhere to 1 inside their surfaces and the welded shells.

In the further rotation of the nuts 6 in, po “way” t, the compression (deformation) of the disk-shaped flange with the transfer of elastic force to the sectors.

At the same time, the edges of the welded shells are deformed.

After squeezing the disc 7, until the restrictive glasses 16 IB stop, 17 iB torti, the gaps between the jaws of the unfolding mechanisms insert the appropriate thickness of 1 liter Q: 1P1 and 13 Clad and secured from wiptamI, 18, 1) To the shells of the shells.

(adjoining 1 e number, and p shells, during welding

four

thermally distributed crocodile and the ring itself, is under the influence of cup springs 7, tends to increase the diameter of the ring, and also due to elasticity in the axial direction of the sectors of the ring, in the process of thermal deformation of the edges of the shells, ethereal. Curvature, are deformed by the joint with the edges of the shells, do not tear off

from THEM.

Preface and c o i r i

An expanding ring for assembling and welding ring seams, containing sectors and interposed between them, a mechanism for unclamping them, consisting of two parts, distinguished by one. what with the purpose

The guests of assembly and quality of welded connections, eoKTOpii with flexible thin sheets, 1) los, and tea, as a result of unfolding 1a in the form of a mobile housing, can be connected to one of the sectors, from 1 level, in which it is possible The first part is installed in the form of a single go 1a, rigidly connected with another sector, and OD1 is raised from the body

with yumoschiyu disc springs. P l A

lpu.5

Rmg.