Permanently-tight interlocked non-return nut

Abstract

The invention belongs to the mechanical field, and particularly relates to an anti-loosing nut. A permanently-tight interlocked non-return nut is a planar interlocked non-return nut; a spring hole isformed slantwise from the lower end surface to the upper end surface of the nut; a rolling body and a spring are placed in the spring hole; the rolling body is partially bulged out of the lower end surface of the nut; a lock pin hole is formed in an upper-end hole opening of the spring hole, and a self-locking lock pin is inserted; and the rolling body is connected with the lock pin through the spring. The permanently-tight interlocked non-return nut adopts a creative and new anti-loosing manner, and is simple in structure. An anti-loosing torque is measurable and controllable, and a pluralityof interlocking mechanisms are installed on the nut, and can be controlled as needed. The permanently-tight interlocked non-return nut is permanently-tight, reliable in performance, and wide in application; the permanently-tight interlocked non-return nut can be repeatedly used for unlimited times in the own limit service life; and the permanently-tight interlocked non-return nut is applicable tovarious fields or equipment needing high strength, for example, various vehicles, railway tracks, strictly-sealed chemical equipment, nuclear facilities and the like, and completely capable of replacing and superior to imported nuts in important occasions such as high-speed railways.

Description

technical field [0001] The invention belongs to the field of machinery, in particular to anti-loosening bolts and nuts. Background technique [0002] There are three commonly used anti-loosening methods for existing nuts: frictional anti-loosening, mechanical anti-loosening and permanent anti-loosening. Mechanical anti-loosening and friction anti-loosening are called detachable anti-loosening, while permanent anti-loosening is called non-removable anti-loosening. Commonly used permanent anti-loosening methods include: spot welding, riveting, bonding, etc. This method mostly destroys the threaded fasteners during disassembly and cannot be reused. Common friction and anti-loosening methods include: using gaskets, self-locking nuts and double nuts. Common mechanical anti-loosening methods: use cotter pins, stop washers and string wire ropes, etc. However, these cannot meet the needs of particularly important connection occasions, nor can they be reusable and never loose. F...

AI Technical Summary

Problems solved by technology

But none of these can meet the needs of particularly important connection occasions, nor can it be reused and never loose

For example, at present, the locknuts used in my country's high-speed rail still need to be imported.

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