扭矩扳手又叫力矩扳手、扭力扳手，一般分為兩類：定扭矩電動扳手和定扭矩手動扳手。
Torque wrench also known as torque wrench, torque wrench, generally divided into two categories: constant torque electric wrench and constant torque manual wrench.
定扭矩電動扳手又叫扭矩可調電動扳手，是電動扳手的一種，其更主要特征就是可以設定扭矩，并且扭矩可調。
Constant torque electric wrench, also known as torque adjustable electric wrench, is a kind of electric wrench. Its main feature is that the torque can be set and the torque can be adjusted.
二、應用
2、 Application
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。
The electric wrench is mainly used in the steel structure installation industry, which is specially used to install the high-strength bolts of steel structure. The high-strength bolts are used to connect the joints of steel structures, usually in the form of bolt groups.
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。大六角高強螺栓的初緊和終緊都必須使用定扭矩扳手。
High strength bolts can be divided into torsion shear type and large hexagon type. There are four kinds of national standard torsional shear high-strength bolts: M16, M20, M22, M24, and now there are also non-national M27 and M30; national standard large hexagon high-strength bolts are M16, M20, M22, M24, M27, M30, etc. Generally, the tightening of high-strength bolts should be first and then final tightening, and each step needs to have strict torque requirements. Constant torque wrench must be used for initial tightening and final tightening of large hexagon high strength bolts.
三、定扭矩電動扳手使用方法
3、 Usage of constant torque electric wrench
1、電源的連接
1. Connection of power supply
先將主機的三芯插頭插入控制儀相應的插座上，然后將控制儀上的電源線接入電網。綠/黃雙色芯線為接地線。
First, insert the three core plug of the host into the corresponding socket of the controller, and then connect the power line of the controller to the power grid. The green / yellow core wire is the grounding wire.
工作結束后，以相反方向拆卸。
After the work is finished, dismantle in the opposite direction.
2、螺栓的扭緊操作
2. Tightening operation of bolts
1）裝上反力支架，并緊固螺釘。開動主機，使方頭銷孔與反力支架孔相對應，然后裝入扳手套筒，插上銷釘，并用橡膠圈固定。
1) Install the reaction support and tighten the screws. Start the main engine to make the square head pin hole correspond to the reaction support hole, then install the wrench socket, insert the pin, and fix it with rubber ring.
2）將控制儀的扭矩旋扭調到所需扭矩值，將主機正反開關撥到正轉位置，把扳手套筒套在螺紋連接件的六方上。
2) Adjust the torque of the controller to the required torque value, turn the positive and negative switch of the host to the forward rotation position, and put the wrench socket on the hexagon of the threaded connector.
3）按下電源開關，扳手啟動。當反力支架力臂靠牢支點時（支點可以是鄰近的一只螺栓或其他可做支點的位置）螺栓開始擰緊。當螺栓扭矩達到預定扭矩時，扳手自動停止，緊固完成，放開電源開關，進行下一只螺栓的緊固工作。
3) Press the power switch to start the wrench. When the force arm of the reaction support is firmly against the fulcrum (the fulcrum can be a nearby bolt or other fulcrum position), the bolt begins to tighten. When the bolt torque reaches the predetermined torque, the wrench will stop automatically and the tightening is completed. Release the power switch to tighten the next bolt.
4）扳手自動停止后，靠反力支架的彈性形變力，使支架力臂自動脫離支點，取下扳手。如力臂不能脫離支點時，可撥動正反開關，點動電源開關，扳手即可取下。
4) After the wrench stops automatically, the arm of the bracket will automatically break away from the fulcrum by the elastic deformation force of the reaction support, and then the wrench can be removed. If the force arm can not be separated from the fulcrum, the positive and negative switch can be turned, and the power switch can be touched to remove the wrench.
3、螺栓的拆卸操作
3. Bolt removal
扳手在拆卸螺栓（反轉）時，其操作方法與擰緊操作相同，只是將正反開關撥到反轉位置，螺栓卸松后防開電源開關。
When the wrench is removing the bolt (reversing), the operation method is the same as that of tightening, but the positive and negative switch is turned to the reverse position, and the power switch is not opened after the bolt is loosened.
4、扭矩的選擇與調節
4. Selection and adjustment of torque
1）用戶可在100---3500Nm的范圍內任意選擇相應規格的電動扳手。
1) The user can choose the electric wrench of corresponding specifications in the range of 100-3500nm.
2）控制儀面板上有“扭矩調節”旋扭，刻有0—100刻度值，用以調節扭矩。
2) There is a "torque adjustment" knob on the panel of the controller, which is engraved with 0-100 scale value to adjust the torque.
3）調節方法：產品出廠帶有扭矩測試數據卡片，供用戶標定時參考，用戶可根據所需扭矩選擇某一刻度值，按照擰緊螺栓的操作方法，扭緊螺栓。用測力扳手或其他測力儀器測出螺栓的實際扭矩值，若扭矩值偏高，將旋扭向低刻度調節；若扭矩值偏低，則向高刻度值調節，反復幾次既可達到所需精確扭矩值。
3) Adjustment method: the product is provided with torque test data card for users' reference during calibration. The user can select a calibration value according to the required torque and tighten the bolt according to the operation method of tightening the bolt. The actual torque value of the bolt is measured with a force measuring wrench or other force measuring instruments. If the torque value is too high, adjust the torque to the low scale; if the torque value is low, adjust it to the high scale value. Repeat several times to achieve the required accurate torque value.
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