An auxiliary welding device for tailor-welding hemispherical shells from equally divided melon petals

Abstract

An auxiliary welding device used for forming a hemispherical shell by welding equally-divided melon section bodies comprises supports (1), bearing blocks (2), a clamp (3), a short fulcrum shaft (3.1), a round bottom plate (3.2), a long fulcrum shaft (3.3), a reinforcing ring (3.4), a main support plate (3.5), a pressing ring (3.6), pressing blocks (3.7), reinforcing ribs (3.8), a coupling (4), an operating panel device (5), a speed reducer and a motor (6). The bearing blocks are assembled on the upper end faces of the two supports with the same height, one bearing block is used for being connected the short fulcrum shaft, and the other bearing block is used for being connected with the long fulcrum shaft. The long fulcrum shaft is connected with the output end of the speed reducer through the coupling, and the input end of the speed reducer is connected with the motor. The clamp rotates around the two bearing blocks forwards or backwards. The auxiliary welding device can be used for forming the hemispherical shell by welding the equally-divided melon section bodies, dimensional accuracy of tailored welding is guaranteed, the welding position is more comfortable, welding deformation is controllable, welding efficiency and welding quality are improved, and the labor intensity of welders is relieved.

Description

technical field [0001] The invention belongs to the technical field of auxiliary welding devices, in particular to an auxiliary welding device which tailor-welds equally divided melon petals into a hemispherical shell. Background technique [0002] Large hemispherical shells are mostly used in the manufacture of manned submersibles. Due to the thickness of the hemispherical shells, they cannot be produced by direct forging. They can be divided into N structures with equal volumes according to the drawing design requirements of the hemispherical shells. The equal parts of the melon body, and then tailor welding of N equal parts of the melon body can produce the hemispherical shell. [0003] At present, the inner mold is used as an auxiliary welding device, and N equally divided melon petals are placed on the inner mold with matching diameter to tailor weld the hemispherical shell. After the outer layer is spot welded, it can be turned over to spot weld the inner layer, and it...

AI Technical Summary

Problems solved by technology

[0003] At present, the inner mold is used as an auxiliary welding device, and N equally divided melon petals are placed on the inner mold with matching diameter to tailor weld the hemispherical shell. After the outer layer is spot welded, it can be turned over to spot weld the inner layer, and it cannot be completed until it is turned over several times. The welding and flipping process can easily cause deformation of the N equally divided melon petals, resulting in unqualified quality of the tailor-welded hemisphere

Images