Anti-vibration locking bolt pair

Abstract

The invention discloses an anti-vibration locking bolt pair. The anti-vibration locking bolt pair comprises a first connecting piece and a second connecting piece; an overrunning clutch structure is arranged between the first connecting piece and the second connecting piece, so that the second connecting piece can be forwards rotated for gradual tightening, and cannot be reversely rotated for loosening; the overrunning clutch structure comprises an anti-rotating groove formed in the first or second connecting piece; the anti-rotating groove is gradually shallowed in the forward rotating direction of the second connecting piece; a rolling body formed by a revolving body and an elastic element are arranged in the anti-rotating groove; one end of the elastic element butts against the rollingbody, and the other end butts against the side wall of the deeper side of the anti-rotating groove, so that the rolling body is positioned on the shallower side of the anti-rotating groove; one side of the rolling body is leaned against the bottom wall of the anti-rotating groove; and the other side is leant against the second or first connecting piece. The anti-vibration locking bolt pair is simple in structure, can effectively prevent automatic reverse rotation of nuts for loosening, and can eliminate adverse effect on the locking effect due to long-time use of the bolt pair.

Description

technical field [0001] The invention relates to the technical field of fastener manufacturing, in particular to an anti-seismic never-loosening bolt pair. Background technique [0002] A bolt pair is a very common structural part used for fastening connections. It usually includes bolts, nuts threaded with the bolts, and corresponding washers. When there is vibration or load change, especially when there is long-term high-frequency vibration and changing load such as automobiles and trains, the nut will gradually reverse and loosen due to the change of load and vibration, so that The bolt pair fails. This will cause great potential safety hazards and damages for use occasions such as high-speed rail. As we know, the most common way of using the existing bolt pairs is to set bolt through holes on the parts that need to be fastened to each other, then pass the bolts through the bolt through holes of the parts, and then tighten the nuts to connect the bolts Extending the tai...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problems of poor anti-loosening effect and low reliability existing in the existing anti-loosening bolt pair structure, and to provide an anti-seismic never-loosening bolt pair, which has a simple structure and can effectively prevent The nut is loosened by self-reversing, and can eliminate the adverse effect on the anti-loosening effect caused by the long-term use of the bolt pair

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