Anti-loosing and antitheft device for bolt and nut

Abstract

The invention belongs to the technical field of the protection of railway vehicle fasteners and particularly relates to an anti-loosing and antitheft device for a bolt and a nut. The anti-loosing and antitheft device for the bolt and the nut solves the problem that the fastening and protection of the bolt and the nut of the conventional railway vehicle cannot be performed simultaneously. The anti-loosing and antitheft device for the bolt and the nut comprises a U-shaped plate consisting of two straight segments and a connecting segment, wherein the two straight segments are configured to be vertical to the central axis lines of the protected bolt and nut; the end part of one straight segment is provided with an inner hexagonal sleeve, and the end part of the other straight segment is provided with a semi-round ring; the central axis lines of the inner hexagonal sleeve and the semi-round ring are coaxial with or parallel to those of the bolt and the nut; the upper part of the semi-round ring is fixed with a check wafer; a through hole is formed on the check wafer; and the circle centre of the through hole and the central axis line of the inner hexagonal sleeve are positioned on thesame straight line. The anti-loosing and antitheft device for the bolt and the nut has the following advantages of loosing prevention, burglar prevention, high practicability, integrated structure, convenient use, reusability, simple structure, light weight, low cost, certain universal property, applicability in train connecting parts and capability of effectively improving the running safety of the railway vehicle.

Description

technical field [0001] The invention belongs to the technical field of fastener protection for railway vehicles, and in particular relates to an anti-loosening and anti-theft device for bolts and nuts. Background technique [0002] There are a large number of bolts and nuts connecting parts on the railway vehicles. Due to the serious vibration of the vehicles during operation, the bolts and nuts are easy to loosen and lose, resulting in the falling off of the connected parts. In addition, during the operation of railway vehicles, the theft of accessories is also very serious. The falling off and loss of accessories will bring serious hidden dangers to driving safety. [0003] In order to prevent the bolts and nuts from loosening after tightening, the existing common way is to spot weld the nuts after the bolts and nuts are tightened, but the problem brought is that it is inconvenient to overhaul the accessories. [0004] Another commonly used connection method on railway ve...

AI Technical Summary

Problems solved by technology

[0006] The present invention provides an anti-loosening and anti-theft device for bolts and nuts in order to solve the problem that the existing railway vehicle bolts and nuts cannot be both fastened and protected.

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