A torsion wrench is a tool used to tighten high-strength bolts of the torsion shear type. There are generally electric shear wrenches and manual shear wrenches, among which electric shear pliers are more common. The application of electric torque wrench is mainly for the initial tightening of shear type high-strength bolts. Impact electric wrench or constant torque wrench can be used for tightening, and shear wrench must be used for tightening. Therefore, it is specifically used for tightening shear type high-strength bolts. For industrial electric shear wrenches, on the one hand, reliable factory procurement should be selected, and on the other hand, attention should be paid to the maintenance and repair of electric wrenches. This can indirectly extend their service life, improve factory efficiency, and save factory costs. Here are the maintenance precautions for electric torsion shear wrenches:

1） 当灰尘或沙子等外部物体粘附在套筒上时，应经常拆卸和清洁套筒。

1) When external objects such as dust or sand adhere to the sleeve, the sleeve should be frequently disassembled and cleaned.

2） 清洁灰尘时，请勿使用苯、松节油和汽油等有机溶剂，这可能会造成损坏或颜色变化。

2) When cleaning dust, do not use organic solvents such as benzene, Turpentine and gasoline, which may cause damage or color change.

3） 不要损坏电机或让油和有机溶剂粘附在电机芯上。

3) Do not damage the motor or allow oil and organic solvents to adhere to the motor core.

4） 使用后，将扳手放在一个铁盒中，并放在干燥的地方。

4) After use, place the wrench in an iron box and place it in a dry place.

5） 如果弹射杆耗尽，且弹射装置失去功能，因此无法再弹射销尾，则应使用新的弹射杆替换耗尽的弹射棒。

5) If the ejection rod is depleted and the ejection device loses function, making it impossible to eject the pin tail, a new ejection rod should be used to replace the depleted ejection rod.

需要注意的是，如果弹射尾杆的销尾未经操作就脱出，则须更换内套筒。如果内套筒磨损过多，钉尾会自动出来，这表明可能发生危险。

It should be noted that if the pin tail of the ejection tail rod comes out without operation, the inner sleeve must be replaced. If the inner sleeve is worn too much, the nail tail will automatically come out, indicating a potential danger.

6） 碳刷须定期检查。当碳棒长度小于6mm时，更换原碳刷。注意：碳刷用于两个位置。碳刷长度应大于6mm。如果长度小于6mm，则更换碳刷。

6) Carbon brushes must be inspected regularly. When the length of the carbon rod is less than 6mm, replace the original carbon brush. Note: The carbon brush is used in two positions. The length of the carbon brush should be greater than 6mm. If the length is less than 6mm, replace the carbon brush.

7）维护和检查期间，关闭开关并使用扳手断开电源。扳手使用后或暂时无反射时，也应断开电源。

7) During maintenance and inspection, turn off the switch and use a wrench to disconnect the power supply. After using the wrench or when there is no reflection temporarily, the power should also be disconnected.

8） 每六个月或20000次（以先到者为准）进行一次检修。立即与制造商或经销商进行检修。

8) Perform maintenance every six months or 20000 times (whichever comes first). Immediately conduct maintenance with the manufacturer or distributor.

扭剪型高强度螺栓安装规定：安装时，高强度螺栓应自由穿入孔内，不得用力敲击。当螺栓不能自由穿入时，不允许使用气割扩大孔。相反，需要使用铰刀钻孔。在修补孔时，板层应靠近，以防止铁屑进入板缝。铰孔后，应使用磨床去除孔边缘的毛刺和铁屑。初拧应拧紧至螺栓标准轴向力（即设计预紧力）的60%～80%，初拧扭矩值不得小于拧紧扭矩值的30%。从关节刚度高的地方到无约束的自由端。

Installation regulations for torsion shear type high-strength bolts: During installation, high-strength bolts should be freely threaded into the hole and should not be forcefully knocked. When the bolt cannot penetrate freely, gas cutting is not allowed to expand the hole. On the contrary, it is necessary to use a reamer to drill holes. When repairing holes, the board layer should be close to prevent iron filings from entering the board joints. After reaming, a grinder should be used to remove burrs and iron filings from the edge of the hole. The initial tightening should be tightened to 60% to 80% of the standard axial force (i.e. design pre tightening force) of the bolt, and the initial tightening torque value should not be less than 30% of the tightening torque value. From areas with high joint stiffness to unconstrained free ends.

电动扭剪扳手主要用于拧紧扭矩剪切型高强度螺栓。其目的是切断扭矩剪切型高强度螺栓的梅花头。工作时，将扳手头与螺栓头对齐，然后单击开关开始工作。几秒钟后，螺栓梅花头就会断裂，然后拔出扳手拉动扳机弹出梅花头，这样扭矩剪切型高强度螺栓就可以紧固。

Electric torque shear wrenches are mainly used to tighten torque shear type high-strength bolts. Its purpose is to cut the plum blossom head of torque shear type high-strength bolts. When working, align the wrench head with the bolt head, and then click the switch to start working. After a few seconds, the bolt head will break, and then pull out the wrench to pull the trigger and pop out the head, so that the torque shear high-strength bolt can be tightened.

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This article is a friendly contribution from the manufacturer of torsion wrenches. For more relevant knowledge, please click on: Sincere attitude. We will provide you with comprehensive services. We will gradually contribute more relevant knowledge to everyone. Stay tuned