Limited space supporting device

Abstract

The invention discloses a limited space supporting device. The supporting device comprises a base, a handle, a first connecting piece, a second connecting piece, a third connecting piece and a guide ring, wherein the first connecting piece comprises a first end hinged to the base and a second end fixedly connected with the handle; the handle and the first connecting piece are not on the same straight line; the second connecting piece comprises a supporting shaft; one end of the third connecting piece is hinged to the lower end of the supporting shaft; the other end of the third connecting piece is hinged to the second end; the guide ring is fixedly connected with the base; the guide ring sleeves the supporting shaft; and the first end, the second end and the supporting shaft can be positioned on the same straight line. According to the limited space supporting device, when in the free state, the height is relatively low, the access from a narrow opening is easy; meanwhile, the height can be adjusted through the handle by pulling the handle only, the adjustment is convenient and rapid with no need of screwing screws by entering into a narrow space; and moreover, the access difficulty due to locking generated by welding pressure is avoided.

Description

technical field [0001] The invention relates to the technical field of subway vehicle production, in particular to a support device in a limited space. Background technique [0002] At present, in the production process of spot welding tires for corrugated floors of stainless steel subway car bodies, the corrugated bottom plate is covered on the main beam, and then the two points are spot welded by single-sided double-point equipment. Since the working pressure of the electrode can reach 50KN, the main beam below will be deformed by "bow head", which will affect the welding quality. [0003] In order to solve the problem of poor fusion of solder joints caused by the above reasons, it is necessary to provide reliable support directly below the welding part, that is, the inside of the main beam, which is sufficient to resist the welding pressure, so as to prevent the main beam from being deformed under the pressure of the gun head, so as to ensure welding quality. At the sam...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the above technical problems, the embodiment of the present invention proposes a support device in a limited space, which not only realizes the convenience of taking, but also can adjust the height conveniently and quickly in the limited space to realize the support, and it will not cause thread lock to cause Take difficult technical questions

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