A preset electric torque wrench

Abstract

The invention relates to a wrench, in particular to a preset electric torque wrench. The technical problem is how to design a pre-set electric torque wrench that can save labor and can be adjusted according to the torque of the bolt to avoid the bolt from breaking when the bolt is twisted. A preset electric torque wrench, including a handle, on which a mounting plate is connected, and a protective frame is fixedly connected to the top of the mounting plate; a motor, which is installed on the top of the protective frame, and the motor is used to provide driving force ; The transmission gear is rotatably connected to the top of the mounting plate, and the transmission gear is in transmission connection with the output shaft of the motor. The invention drives the driving device to operate through the operation of the motor, and the driving device drives the main shaft to rotate during operation, so as to achieve the effect of tightening the bolts, and does not require manual force when tightening the bolts.

Description

technical field [0001] The invention relates to a wrench, in particular to a preset electric torque wrench. Background technique [0002] A bolt is a mechanical part, a cylindrical threaded fastener with a nut, a type of fastener consisting of a head and a screw (cylindrical body with external threads), which needs to be matched with a nut. For fastening two parts with through holes, this connection form is called bolt connection. If the nut is unscrewed from the bolt, the two parts can be separated, so the bolt connection is a detachable connection. When the bolt is fixed, it is usually necessary to use a wrench to fix the bolt. [0003] At present, the wrenches used by people are usually manual wrenches. When people use a manual wrench to tighten the bolts, it takes a lot of effort, and it takes a long time and the work efficiency is low. [0004] In addition, some people use an electric wrench to twist the bolts. When the electric wrench is used, the bolts will continue...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the disadvantages of manually twisting the wrench that it takes a lot of effort and the work efficiency is low, and the existing electric wrench is easy to damage the bolt or the parts that need to be fixed by the bolt when twisting, the technical problem is: provide a use It can be more labor-saving and can be adjusted according to the torque of the bolt to avoid the preset electric torque wrench when the bolt is broken when the bolt is twisted.

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