电动扳手有哪些类型，你知道吗？
What types of electric wrenches do you know?
1、冲击电动扳手：主要用于初紧螺栓，操作简单，只要对准螺栓，按下电源开关就好了。
1. Impact electric wrench: it is mainly used for initial tightening of bolts. It is easy to operate. Just align the bolts and press the power switch.
2、电动扭剪扳手：主要是终紧扭剪型高强螺栓的，使用方法是对准螺栓按下电源开关，直到把扭剪型高强螺栓的梅花头打断为止。
2. Electric torsion shear wrench: it is mainly used to finally tighten the torsion shear high-strength bolt. The use method is to align the bolt and press the power switch until the plum blossom head of the torsion shear high-strength bolt is broken.
3、电动定扭矩扳手：既可初紧又可终紧，它的使用是先调节扭矩，再紧固螺栓。
3. Electric constant torque wrench: it can be tightened initially and finally. Its use is to adjust the torque first and then tighten the bolts.
4、电动转角扳手：主要也属于定扭矩扳手的一种，使用方法是先调节旋转度数，再紧固螺栓。
4. Electric angle wrench: it mainly belongs to a kind of constant torque wrench. The use method is to adjust the rotation degree first, and then tighten the bolt.
5、电动角向扳手：专门紧固钢架夹角部位螺栓的电动扳手，它的使用和电动扭剪扳手原理是一样的。
5. Electric angle wrench: it is an electric wrench specially used to fasten the bolts at the included angle of the steel frame. Its principle is the same as that of the electric torsion shear wrench.
选择电动扳手时候，我们需要考虑力量和速度。
When choosing an electric wrench, we need to consider strength and speed.
力量体现在扭力，大扭力的冲击扳手可以扭动更紧固的螺栓，进行更多的作业。
The strength is reflected in the torque. The impact wrench with large torque can twist the tighter bolts and carry out more operations.
速度直接影响作业效率，扳手带动套筒高速旋转，可以更快的装卸螺栓。
The speed directly affects the operation efficiency. The wrench drives the sleeve to rotate at high speed, which can load and unload the bolts faster.
在我们日常生活中，有一把多功能的冲击扳手，既实用又省力。
In our daily life, there is a multifunctional impact wrench, which is both practical and labor-saving.
这款铁成911无刷锂电定扭矩冲击扳手，号称是首台定扭矩冲击扳手，它有什么特点呢？
This Tiecheng 911 brushless lithium battery constant torque impact wrench is known as the first constant torque impact wrench. What are its characteristics?
什么叫定扭矩呢？定扭矩就是拧螺丝松紧，我们在操作的时候，可以设定某一个力矩（牛.米），机子就会自动停止，这样使用时，每一颗螺丝的松紧都是一致的（要一次拧到位才精准），隔壁老的强迫症都治好了。
What is constant torque? Constant torque is to tighten the screws. When we operate, we can set a certain torque (n · m) and the machine will stop automatically. In this way, the tightness of each screw is the same (it needs to be screwed in place at one time). Lao Wang's obsessive-compulsive disorder next door has been cured.
