Electric torsion wrench is mainly used in the steel structure installation industry. They are specifically used for installing high-strength bolts in steel structures. High strength bolts are used to connect steel structure joints, usually in the form of bolt sets. High strength bolts can be divided into torsion shear type and large hexagonal type. There are four types of national standard high-strength torsion shear bolts: M16, M20, M22, and M24, and there are now two non national standards M27 and M30; The national standard large hexagonal high-strength bolts are M16, M20, M22, M24, M27, M30, etc. Generally, the tightening of high-strength bolts should be done first and then, with strict torque requirements for each step.

扭剪高强螺栓的初拧可使用冲击电动扭剪扳手或固定扭矩扳手，终拧须使用扭剪扳手；大六角高强度螺栓的初拧和终拧须使用恒扭矩扳手，因此，各种电动扭剪扳手适用于各种紧固需要。

The initial tightening of high-strength bolts can be done using an impact electric torque wrench or a fixed torque wrench, and the final tightening must be done using a torque wrench; The initial and final tightening of large hexagonal high-strength bolts requires the use of constant torque wrenches, therefore, various electric torque shear wrenches are suitable for various tightening needs.

冲击式电动扭剪扳手主要用于螺栓的初拧。它的使用非常简单。只需对准螺栓并拉动电源开关。电动扭剪扳手主要用于拧紧扭剪高强度螺栓。其用途是对准螺栓并拉动电源开关，直到扭剪高强度螺栓的梅花头断裂。电动扭矩扳手可先拧紧，后拧紧。其用途是先调整扭矩，然后拧紧螺栓。电动角扳手主要属于一种恒扭矩扳手。它的用途是先调整旋转度，然后拧紧螺栓。电动角扳手是专门用于紧固钢架夹角处螺栓的电动扭剪扳手。其使用原理与电动扭剪扳手相同。

The impact electric torque wrench is mainly used for the initial tightening of bolts. Its use is very simple. Just align the bolts and pull the power switch. The electric torque wrench is mainly used to tighten high-strength bolts for torque cutting. Its purpose is to align the bolt and pull the power switch until the plum blossom head of the high-strength bolt is broken. Electric torque wrenches can be tightened first and then tightened later. Its purpose is to adjust the torque first and then tighten the bolts. Electric angle wrenches mainly belong to a constant torque wrench. Its purpose is to adjust the rotation first and then tighten the bolts. Electric angle wrench is an electric torque wrench specifically used to tighten bolts at the corners of steel frames. Its operating principle is the same as that of an electric torsion wrench.

电动扭矩扳手由主机和控制仪两部分组成，主机采用双重缘单相串激式电动机和减速机构，结构新颖、体积小、重量轻、安。由于采用静扭结构，运转平稳，无振动、无冲击，噪音小，操作者不受反矩的影响，因而劳动强度低。额定电压220V50/60Hz  精度±5%

The electric torque wrench consists of two parts: the host and the control instrument. The host adopts a dual edge single-phase series excitation motor and a reduction mechanism, with a novel structure, small size, light weight, and safety. Due to the use of a static torsion structure, the operation is stable, without vibration or impact, with low noise, and the operator is not affected by reverse torque, resulting in low labor intensity. Rated voltage 220V, 50/60Hz, accuracy ± 5%

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