Check bolt assembly and check bolt and locknut thereof

Abstract

The invention relates to a check bolt assembly and a check bolt and a locknut thereof. The check bolt assembly comprises a bolt with external threads and a nut with internal threads; thread teeth with slopes at two sides of the internal threads are spirally matched with thread slots with slopes at two sides of the external threads; the major diameter size of the external threads of the bolt is the same as that of the internal threads of the nut; the minor diameter size of the external threads of the bolt is larger than that of the internal threads of the nut; the bolt is larger than the nut in hardness, the thread teeth of the internal threads are pressed to generate deformation by the bottom of the thread slots of the external threads in a process of spirally forcibly mounting the nut on the bolt to fill up the thread slots of the external threads, and the slopes at the two sides of the thread teeth of the internal threads respectively correspondingly abut against and contact with the slopes at the two sides of the thread slots of the bolt. The slopes at the two sides of the thread teeth are in abutting contact with the slopes at the two sides of the thread slots, so that the friction between the bolt and the nut is effectively enhanced and an anti-loosening effect of the check bolt assembly is effectively improved.

Description

technical field [0001] The invention relates to an anti-loosening bolt assembly and its anti-loosening bolt and anti-loosening nut. Background technique [0002] Various machines and components are inseparable from fasteners in connection assembly. Fasteners bring convenience to the machinery industry, but they have an inevitable weakness, that is, they will loosen by themselves in severe or frequent vibrations, causing damage, disintegration, or even accidents to parts or a complete piece of equipment . In order to solve the loosening problem of fasteners, scientists and engineers from many countries in the world have done a lot of experiments and researches since the birth of threaded fasteners. To a certain extent, the time for the fastener to loosen by itself has been alleviated, but the problem has not been fundamentally solved. [0003] The thread of existing common bolt 100 is as figure 1 As shown, it is a complete cone of 60° arranged along with the helical line,...

AI Technical Summary

Problems solved by technology

[0005] The present invention provides an anti-loosening bolt assembly to solve the problem in the prior art between the front slopes on both sides of the thread groove of the bolt external thread and the front slopes on both sides of the thread teeth of the nut internal thread. The gap affects the technical problem of the anti-loosening and self-locking performance of the bolt assembly; at the same time, the invention also provides a kind of anti-loosening bolt and anti-loosening nut

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