Anti-loosening secondary pre-tightening type bolt

Abstract

The invention discloses an anti-loosening secondary pre-tightening type bolt, and belongs to the technical field of bolts. According to the scheme, locking and fixing among a fastening nut, a workpiece and a screw rod are enhanced through limiting and fixing between a limiting rod and a limiting groove in a positioning anti-loosening mechanism, the connection fastening performance among the fastening nut, the workpiece and the screw rod is improved, and when the workpiece vibrates, the workpiece is prevented from being loosened. A plurality of friction balls in the attraction extending and abutting loosening mechanism collide and rub with one another to generate static electricity and attract magnetic insulation powder to be gathered upwards, so that the magnetic insulation powder on the two sides becomes loose and dispersed, a movable rod is promoted to push an abutting plate to abut against a threaded rod under attraction of a magnet block, hard-state conversion of buffering fluid is matched, vibration force is dissipated, loosening is reduced, and the service life of the movable rod is prolonged. And meanwhile, upward extrusion acting force is applied to limiting clamping between the fastening nut and the workpiece, connection is further reinforced, the anti-loosening effect is enhanced, the stability is improved, and the using effect is enhanced.

Description

technical field [0001] The invention relates to the technical field of bolts, in particular to an anti-loosening secondary pretightening bolt. Background technique [0002] A bolt is a cylindrical threaded fastening mechanical part equipped with a nut. It is often used for fixed connections between various parts. Bolts are widely used in electronic products, digital products, electrical equipment, electromechanical machinery products and other industries. There are different types of bolts, according to the shape of the head, there are square head, round head, countersunk head, hexagonal head and so on. [0003] At present, after the parts of each part of the mechanical equipment are processed, these equipment parts are then connected, assembled and fixed by bolts. However, during the long-term use of the mechanical equipment, the equipment parts are affected by vibration, which easily causes the bolts to shake, causing the nuts to Sliding wire, resulting in loosening, affe...

AI Technical Summary

Problems solved by technology

[0003] At present, after the parts of each part of the mechanical equipment are processed, these equipment parts are then connected, assembled and fixed by bolts. However, during the long-term use of the mechanical equipment, the equipment parts are affected by vibration, which easily causes the bolts to shake, causing the nuts to Slipping the wire, which leads to loosening and affects the stability of the threaded connection

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