Tightening spanner counter-torque mechanism

Abstract

The invention discloses a tightening spanner counter-torque mechanism. The tightening spanner counter-torque mechanism comprises a connecting plate, a swinging arm mechanism and a counter-torque rod. The connecting plate is in threaded connection to a tightening spanner. The swinging arm mechanism comprises an L-shaped swinging arm and a ratchet mechanism. A first end of the L-shaped swinging arm rotatably penetrates through the connecting plate, a ratchet wheel of the ratchet mechanism is arranged at the first end of the L-shaped swinging arm in a sleeved mode, and a ratchet of the ratchet mechanism and a locking block are arranged on the connecting plate so that the L-shaped swinging arm can only rotate in one direction. The counter-torque rod is arranged at a second end of the L-shaped swinging arm. The tightening spanner counter-torque mechanism is reasonable and simple in structure, and can adjust the abutting position of the counter-torque rod by rotating the angle and sliding of the swinging arm to change the relative position of the counter-torque rod on a cross rod according to the space environment of a tightening bolt, and the application range of the tightening spanner counter-torque is wide, and operation is convenient.

Description

technical field [0001] The invention relates to the field of tightening wrenches, in particular to an anti-torque mechanism of a tightening wrench. Background technique [0002] The engine assembly process uses various electric and pneumatic tightening wrenches to tighten bolts and nuts of different specifications to assemble various parts. The reaction torque acts on the hands of the workers, which increases the labor intensity of the workers. [0003] The method of counteracting the reaction torque generated when the bolt is tightened has many different methods depending on the parts to be assembled and the installation method of the wrench, and can be designed as a different reaction torque mechanism. Among them, the tightening wrench with hand-held or hanging soft connection can not offset the reaction torque generated by the connection mechanism, but can only be offset by the reaction torque mechanism installed at the front end of the wrench. However, due to the positi...

AI Technical Summary

Problems solved by technology

Among them, the tightening wrench with hand-held or hanging soft connection can not offset the reaction torque generated by the connection mechanism, but can only be offset by the reaction torque mechanism installed at the front end of the wrench. However, due to the position of the tightening bolt Due to the difference in the shape of the surrounding parts, the application space of the tightening wrench is greatly limited, so that when the tightening wrench is used to tighten the bolts in some positions, the counter torque mechanism cannot be used to offset the counter torque, thereby increasing the labor intensity of the operator, and it is easy to operate for a long time Fatigue and various occupational diseases such as frozen shoulder and lumbar spondylosis

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