Anti-loosing screw nut

Abstract

The invention discloses an anti-loosing screw nut which comprises a screw nut mounting sleeve, a driving screw nut and a locking screw nut, wherein the driving screw nut is mounted inside the screw nut mounting sleeve; a driving part is arranged above the driving screw nut; a shrinking part is arranged below the locking screw nut; a plurality of insert slots are formed in a side wall of the shrinking part in an axial direction; the shrinking part is driven by the driving part to shrink in a radial direction; a plurality of clamping strips are arranged above the shrinking part; annular limiting grooves are formed in the inner wall of the screw nut mounting sleeve; end parts of the clamping strips are driven by the driving part to be expanded in the radial direction and embedded into the annular limiting grooves. As the shrinking part of the locking screw nut is controlled to shrink in the radial direction by the driving screw nut, the radial connection pretightening force of a bolt can be increased, the anti-loosing purpose is achieved, meanwhile the bolt is driven to drive the clamping strips to be embedded inside the screw nut mounting sleeve, the locking screw nut and the screw nut mounting sleeve are locked, connection stability is ensured, and the anti-loosing effect is further improved.

Description

[0001] 【Technical field】 [0002] The invention relates to the technical field of fasteners, in particular to a locknut. [0003] 【Background technique】 [0004] Fasteners are the general term for a class of mechanical parts used to fasten two or more parts (or components) to form a whole. Nuts are one of the most widely used fasteners. Nuts are parts that tightly connect mechanical equipment. Through the inner threads, they are used together with nuts and bolts of the same specification. If the bolts are unscrewed from the nuts, it can be used These two parts are separated, so the connection is a detachable connection, and can also be widely used on panels. When the mechanical equipment is running, it will inevitably produce mechanical vibration. Long-term mechanical vibration will cause the nut to shake, lead to thread wear, and make the fastening effect worse, affecting the working performance and stability of the mechanical equipment, especially affecting some precision eq...

AI Technical Summary

Problems solved by technology

When the mechanical equipment is running, it will inevitably produce mechanical vibration. Long-term mechanical vibration will cause the nut to shake, lead to thread wear, and make the fastening effect worse, affecting the working performance and stability of the mechanical equipment, especially affecting some precision equipment. machining accuracy, there may be a phenomenon that the bolts come out of the threaded holes of the nuts, which may cause mechanical failures, so a lock nut is proposed

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