Torque wrench with very low reactive force to operator

Abstract

The invention discloses a torque wrench with very low reactive force to an operator. The torque wrench includes a power assembly, a transmission assembly, and an output assembly. When the wrench is used, partial threads of a bolt (15) are screwed into a threaded hole of a base (17), the bottom of an output (9) is fabricated with the bolt (15), then a power source switch is opened and the tightening operation is carried out, when a torque sensor monitors that an output torque value is basically stable, maximum output torque is achieved, and power source is broken and the tightening is finished.A wrench outer shell (1) is separated from the whole system of torque transfer when the wrench works so that the operator does not need to be subjected to the reactive force. The torque wrench has the beneficial effects that the reactive force to the operator is basically zero in the working process, the labor intensity can be greatly reduced, the requirement of human engineering can be met, thedevelopment process of unmanned, intelligent, and robotized torque wrench can be accelerated, and high use value can be achieved.

Description

technical field [0001] The present invention relates to a hand-held power tool for transmitting torque to fastened joints. Background technique [0002] A torque wrench is a tool used to drive threaded parts such as bolts or screws to rotate and tighten two or more parts. With different power sources and structural features, there are various forms of torque wrenches. From the principle of labor saving, it can be divided into two types, one is the manual booster wrench that adopts the principle of deceleration; the other is the low reaction force wrench that counteracts the reaction force by setting a flywheel and other methods. [0003] Current research on booster wrenches includes Chinese patent CN208713808U, in view of the laborious characteristics of manual wrench tightening operations, double-row transmission gears are used to achieve the effect of deceleration and booster force, and workers are still required to provide tightening force during use. Patents CN208773421...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the shortcomings of acceleration torque in the existing low reaction force electric wrench, and provide a torque wrench that has basically no reaction force on the operator, which can reduce the labor intensity of workers and improve labor efficiency

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