Improved type shockproof self-locking bolt

Abstract

The invention discloses an improved type shockproof self-locking bolt which comprises a screw rod, a nut and a locking block; the upper end and the lower end of the screw rod are provided with corresponding locking grooves; sawteeth are uniformly distributed on the peripheral ring of the outside diameter end of an annular boss of the left end of the nut, and an orientation of the tooth tips is setto be an anticlockwise direction; the right end part of the locking block is provide with a large circular concave hole; the shape of the side surface of a locking portion is set to be an inverted right trapezoid; the inclined surface of the locking portion can smoothly slide across the inclined surfaces of sawteeth on the annular boss when a compression spring retracts, and a vertical plane of the locking portion can prop against the tooth tips of the sawteeth downward under the elastic force effect of the compression spring; the inside diameter of a large circular through hole of the locking block is a little larger than the outside diameter of the screw rod; and the top end and the bottom end of the inner wall of the large circular through hole are provided with ridges adapted to the locking grooves of the upper end and the lower end of the screw rod respectively. The improved type shockproof self-locking bolt provided by the invention can prevent the nut from loosening and fallingfrom the screw rod through rotating, is more reasonable in structure and has the advantages of rapidness and convenience in mounting and disassembly.

Description

technical field [0001] The invention relates to the technical field of machinery, in particular to an improved anti-vibration self-locking bolt. Background technique [0002] As known, ordinary bolts generally do not have self-locking function, and can basically meet the requirements of use in general occasions. However, when used in some occasions with large vibration, the bolts will loosen due to the vibration. In order to prevent the loosening of fastening parts such as bolts and nuts, people later used spring washers and various anti-loosening devices to meet the needs of various mechanical equipment fastening connections. However, since the above measures still have the defects of poor impact resistance and insufficient anti-vibration ability in actual use, mechanical equipment connected by bolts and nuts is still prone to loose connections during operation, so that the connecting parts lose their own. function, resulting in equipment damage or malfunction. [0003] ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an improved anti-vibration self-locking bolt, which can not only prevent the nut from loosening and falling off from the screw rod under long-term vibration environment, but also effecti...

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