The final tightening of torsional shear high-strength bolts requires the use of torsional shear electric wrench.

現(xiàn)在高強(qiáng)螺栓的分類分為大六角高強(qiáng)螺栓和扭剪型高強(qiáng)螺栓，每種高強(qiáng)螺栓的緊固都必須先初緊再終緊。

At present, high-strength bolts are classified into large hexagon high-strength bolts and torsional shear high-strength bolts. Each kind of high-strength bolt must be tightened first and then finally.

扭剪型高強(qiáng)螺栓的初緊可以選擇沖擊電動扳手、定扭矩電動扳手或扭剪型電動初緊扳手，一般達(dá)到終緊扭矩的50-60%就可以了。而扭剪型高強(qiáng)螺栓的終緊一定要用扭剪型電動扳手，因為扭剪型高強(qiáng)螺栓的終緊需要把它的梅花頭打斷。 

The initial tightening of torsional shear high-strength bolts can choose impact electric wrench, constant torque electric wrench or torsional shear electric initial tightening wrench, which generally reaches 50-60% of the final tightening torque. The final tightening of torsional shear high-strength bolt must use torsional shear electric wrench, because the final tightening of torsional shear high-strength bolt needs to break its plum blossom head.  

電動扭剪扳手是裝配螺紋件及螺栓的機(jī)械化施工工具，具有自動控制扭矩功能。廣泛應(yīng)用于栓焊結(jié)構(gòu)橋梁的架設(shè)，廠房、塔架及化工、冶、發(fā)電設(shè)備的安裝。大型機(jī)械、起重設(shè)備和車輛裝配作業(yè)，以及對螺紋緊固件的扭矩及軸向拉力有嚴(yán)格要求的場合。

Electric torsional shear wrench is a mechanized construction tool for assembling threaded parts and bolts, which has the function of automatic torque control. It is widely used in the erection of bolted and welded bridges, and the installation of plants, towers and chemical, metallurgical and power generation equipment. Large machinery, lifting equipment and vehicle assembly operations, as well as occasions with strict requirements on the torque and axial tension of threaded fasteners.

電動扭剪扳手螺栓的擰緊操作方法

Tightening operation method of electric torsion shear wrench bolt

1、裝上反力支架，并緊固螺釘。開動主機(jī)，使方頭銷孔與反力支架孔相對應(yīng)，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 so that the square head pin hole corresponds to the reaction support hole, then install the wrench socket, insert the pin and fix it with a rubber ring.

2、將控制儀的扭矩旋鈕調(diào)到所需扭矩值，將主機(jī)正反開關(guān)撥到正轉(zhuǎn)位置，把扳手套筒套在螺紋連接件的六方上。

2. Adjust the torque knob of the controller to the required torque value, turn the forward and reverse switch of the host to the forward position, and put the wrench socket on the hexagon of the threaded connector.

3、按下電源開關(guān)，扳手啟動。當(dāng)反力支架力臂靠牢支架時（支點可以是鄰近的一只螺栓或其他可作支點的位置）螺栓開始擰緊。當(dāng)螺栓扭矩達(dá)到預(yù)定扭矩時，扳手自動停止，緊固完成，松開電源開關(guān)，進(jìn)行下一只螺栓的擰緊工作。

3. Press the power switch and the wrench starts. When the force arm of the reaction support is firmly against the support (the fulcrum can be an adjacent bolt or other position that can be used as the fulcrum), the bolt begins to tighten. When the bolt torque reaches the predetermined torque, the wrench will automatically stop, the tightening is completed, loosen the power switch and 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(guān)，點動電源開關(guān)扳手即可取下。

4. After the wrench stops automatically, the elastic deformation force of the reaction support makes the support force arm automatically separate from the fulcrum and remove the wrench. If the force arm cannot be separated from the fulcrum, turn the positive and negative switch and click the power switch wrench to remove it.

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