電動扳手就是以電源或電池為動力的扳手，是一種擰緊螺栓的工具。主要分為沖擊扳手、扭剪扳手、定扭矩扳手、轉角扳手、角向扳手、液壓扳手、扭力扳手、充電式電動扳手。
Electric spanner is a spanner powered by power or battery. It is a tool for tightening bolts. It is mainly divided into impact wrench, torque wrench, constant torque wrench, angle wrench, angle wrench, hydraulic wrench, torque wrench and charging electric wrench.
電動扳手的應用：
Application of electric wrench:
電動扳手主要應用于鋼結構安裝行業，專門安裝鋼結構高強螺栓，高強度螺栓是用來連接鋼結構接點的，通常是用螺栓群的方式出現。高強螺栓可分為扭剪型和大六角型兩種，國標扭剪型高強螺栓為M16、M20、M22、M24四種，現在也有非國標的M27、M30兩種;國標大六角高強螺栓為M16、M20、M22、M24、M27、M30等幾種。一般的對于高強螺栓的緊固都要先初緊再終緊，而且每步都需要有嚴格的扭矩要求。扭剪型高強螺栓的初緊可使用沖擊電動扳手或定扭矩扳手,而終緊必須使用扭剪扳手;大六角高強螺栓的初緊和終緊都必須使用定扭矩扳手.故各種電動扳手就是為各種緊固需要而來的。
The electric wrench is mainly used in the steel structure installation industry, which is specialized in the installation of high-strength bolts of steel structure. High strength bolts can be divided into two types: torsional shear type and large hexagon type. There are four types of national standards: M16, M20, M22 and M24. Now there are two kinds of non-national standards: M27 and M30. The national standards are M16, M20, M22, M24, M27 and M30. Generally, for the fastening of high-strength bolts, the initial tightening and then the final tightening are required, and strict torque requirements are required for each step. The impact electric wrench or constant torque wrench can be used for the initial tightening of high-strength bolt of torsional shear type, while the torsional shear wrench must be used for the final tightening; the constant torque wrench must be used for the initial tightening and final tightening of large hexagon high-strength bolt, so all kinds of electric wrenches are for various tightening needs.
電動扳手的使用：
Use of electric wrench:
沖擊電動扳手主要是初緊螺栓的，它的使用很簡單，就是對準螺栓扳動電源開關就行。電動扭剪扳手主要是終緊扭剪型高強螺栓的，它的使用就是對準螺栓扳動電源開關，直到把扭剪型高強螺栓的梅花頭打斷為止。電動定扭矩扳手既可初緊又可終緊，它的使用是先調節扭矩，再緊固螺栓。電動轉角扳手主要也屬于定扭矩扳手的一種，它的使用是先調節旋轉度數，再緊固螺栓。電動角向扳手是一種專門緊固鋼架夾角部位螺栓的電動扳手，它的使用和電動扭剪扳手原理一樣。
The impact electric wrench is mainly used to tighten the bolt initially. Its use is very simple, that is to align the bolt and pull the power switch. The electric torque wrench is mainly used to tighten the torque shear type high-strength bolt. Its use is to align the bolt and pull the power switch until the plum head of the torque shear type high-strength bolt is interrupted. The electric constant torque wrench can be used for initial tightening and final tightening. Its use is to adjust the torque first and then tighten the bolts. The electric angle wrench is also a kind of constant torque wrench. Its use is to adjust the rotation degree first, and then fasten the bolts. The electric angle wrench is a kind of electric wrench specially used to fasten the bolts in the angle part of the steel frame. Its use is the same as the principle of the electric torsional shear wrench.
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