Tool clamp for transverse automatic welding of large spherical shell structure and assembling method

Abstract

The invention discloses a tool clamp for transverse automatic welding of a large spherical shell structure and an assembling method. The tool clamp is characterized by comprising a clamp body; the clamp body comprises a spherical shell and a welding clamp; the spherical shell comprises an upper half spherical shell body and a lower half spherical shell body; an equator welding joint is arranged between the upper half spherical shell body and the lower half spherical shell body; a boss is arranged on the equator welding joint; and the welding clamp comprises a lifting clamp connected with the lower half spherical shell body. The assembling method includes the steps that a platform trolley is loaded to a vacuum chamber guide rail; the lifting clamp is assembled to a rotary table; the lower half spherical shell body is loaded to a supporting cylinder bevel structure of the lifting clamp; a bolt between an L-shaped joint plate and the lifting clamp is synchronously and symmetrically locked; the upper half spherical shell body is assembled to the lower half spherical shell body; the welding position on the boss between the upper half spherical shell body and the lower half spherical shell body is subjected to spot welding through argon arc welding after assembling is completed; and then the welding position in the spherical shell is subjected to spot welding through argon arc welding, and assembling of the upper half spherical shell body and the lower half spherical shell body is completed. By the adoption of the technical scheme, the assembling requirements for welding position precision, welding gaps, welding order differences and the like are met.

Description

technical field [0001] The invention relates to the technical field of a tooling fixture and an assembly adjustment method, in particular to a tooling fixture and an assembling method for horizontal automatic welding of a large spherical shell structure. Background technique [0002] In many cases of engineering practice, it is necessary to carry out integrated welding for the equator of pressure vessel parts such as large spherical shells. When the welding thickness is 30-150 mm and the equatorial weld length reaches 1-7 meters, automatic argon arc welding is usually used , electron beam welding and other methods for splicing. For example, the spherical shell structure of the manned cabin of the manned deep submersible has an inner diameter of 2.1 meters and a thickness of 50-60 mm. For large-size and large-thickness spherical shell structures, in order to obtain better welding quality, the fixture design and structural positioning and assembly of spherical shell parts bef...

AI Technical Summary

Problems solved by technology

[0003] Due to the large size of the spherical shell, in the prior art, the structure of the spherical shell parts is generally subjected to automatic argon arc welding and electron beam welding in the semi-finishing state or after finishing. Except for the welding butt joint surface, the spherical shell structure itself has no positioning, adjustment and adjustment. Measuring position, therefore, welding jigs and assembly methods are difficult and inconvenient for assembly adjustments

In addition, the height of the parts of the welding fixture in the prior art is relatively high, so the space margin of the electron beam welding process is small, and the functions of positioning, measurement, adjustment and assembly cannot be realized. The rigidity of the spherical shell window is not ideal, and the spherical shell structure cannot be realized. The external indirect connection is fixed, the accuracy of the welding position and the welding gap are not ideal, which will affect the weld formation, welding quality and other issues

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