A bolt guard

Abstract

The invention relates to a bolt protection cover which comprises a fixing piece and a cover body. The fixing piece is provided with an annular inner cavity. The lower edge of the annular inner cavity is provided with a plurality of convex pieces which can be clamped to the chamfered portions of the nut conveniently. Notches allowing the nut to enter the annular inner cavity conveniently are formed between the adjacent convex pieces. The fixing piece is detachably sleeved with the cover body. According to the bolt protection cover, a fixing device is separated into the fixing piece and the cover body, the lower edge of the annular inner cavity is provided with the multiple convex pieces which can be clamped to the chamfered portions of the nut conveniently, the notches are formed between the adjacent convex pieces, the nut is sleeved with the fixing piece, corners of the nut enter the fixing piece via the notches firstly, then the convex pieces are clamped to the chamfered portions of the nut through rotating so that fixation can be achieved, the cover body and the fixing piece are fixed so as to cover the nut, protection is achieved, and the problem that protection covers are narrow in application range is solved fundamentally.

Description

technical field [0001] The invention relates to a bolt protective cover, in particular to a nut protective cover which is sleeved on the ends of nuts and bolts to prevent the nuts and bolts from being corroded. Background technique [0002] As a common connecting piece, bolts are widely used in various dynamic and static equipment, railways, bridges, shield tunnels, construction and other fields. A bolt is a fastener formed by screwing a screw and a nut through threads, and usually the end of the screw slightly protrudes from the nut. A gasket is also arranged under the nut. During use, bolts are usually exposed to the environment and are corroded by air, rain, snow and corrosive substances, which reduces the service life and may bring safety problems to production, living and transportation. At the same time, due to rust, the nut and screw rod are rusted together. , not easy to disassemble, bringing stability to maintenance and replacement. [0003] In order to prevent t...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is: in order to solve the actual construction process of the existing bolt protection cover, after the bolt is fixed by the nut, the part exposed from the nut at the end of the bolt is relatively small and cannot be connected with the inner side of the third cavity. The internal thread of the wall forms an effective combination, so that the use of this kind of bolt protection cover has huge restrictions, which is not conducive to the problem of popularization and use. The invention provides a bolt protection cover, which divides the fixing device into a fixing part and a cover body , on the lower edge of the annular inner cavity, a number of lugs are provided to facilitate clamping at the chamfer of the nut, and notches are formed between adjacent lugs, and the fixing piece is set on the nut so that the corner of the nut enters through the notch first. To the inside of the fixing part, and then rotate the lug to be stuck at the chamfer of the nut to form a fixation, and then fix the cover with the fixing part to cover the nut to form a protection, which fundamentally solves the problem of the small range of use of the protective cover

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