高強螺栓作為鋼結構節點連接中常用的部件，在鋼結構中起到非常重要作用。高強螺栓主要由扭剪型高強螺栓和大六角螺栓之分。高強螺栓采用電動扳手來緊固。
As a common component in steel structure joint connection, high-strength bolt plays a very important role in steel structure. High strength bolts are mainly divided into torsion shear high strength bolts and large hexagon bolts. High strength bolts are fastened by electric wrench.
電動扭剪扳手主要用于緊固高強度扭剪螺栓，并且在緊固完成后將剪斷的梅花頭保留在套筒內部不掉落，隨后扣動扳機將梅花頭彈出。
The electric torsion shear wrench is mainly used to fasten the high-strength torsion shear bolt, and keep the cut plum blossom head inside the sleeve after fastening, and then pull the trigger to eject the plum blossom head.
由頭部和螺桿(帶有外螺紋的圓柱體)兩部分組成的一類緊固件。
A type of fastener composed of head and screw (cylinder with external thread).
螺栓的連接
Bolted connection
螺栓與螺母配合，用于緊固連接兩個帶有通孔的元件，屬于可拆卸連接。
The bolt is matched with the nut for fastening and connecting two elements with through holes, which belongs to removable connection.
螺栓連接的工作原理
Working principle of bolted connection
胡可定律：固體材料受力之后，材料中的應力與應變（單位變形量）之間成線性關系。
Hooke's Law: after a solid material is stressed, there is a linear relationship between the stress and strain (unit deformation) in the material.
電動扳手的應用
Application of electric wrench
電動扭剪扳手主要用于緊固高強度扭剪螺栓，并且在緊固完成后將剪斷的梅花頭保留在套筒內部不掉落，隨后扣動扳機將梅花頭彈出。
The electric torsion shear wrench is mainly used to fasten the high-strength torsion shear bolt, and keep the cut plum blossom head inside the sleeve after fastening, and then pull the trigger to eject the plum blossom head.
電動扭矩扳手主要用于緊固各種有扭力要求的大六角高強螺栓，動力為220v或110v交流電源，帶有扭矩控制器，在一定范圍內輸出扭矩可調。
Electric torque wrench is mainly used to fasten various large hexagon high-strength bolts with torque requirements. The power is 220V or 110V AC power supply, with torque controller, and the output torque is adjustable within a certain range.
近年來，因螺栓緊固不當帶來的設備安 全問題屢見不鮮，緊固不足、緊固過量、緊固不均等引起的振動超標、螺栓斷裂、部件脫落等設備故障、 事故時有發生。
In recent years, equipment safety problems caused by improper bolt fastening are common, and equipment faults and safety accidents such as excessive vibration, bolt fracture and component falling off caused by insufficient fastening, excessive fastening and unequal fastening occur from time to time.
使用電動扭矩扳手控制施工扭矩的重要性
Importance of using electric torque wrench to control construction torque
在施工中，除了剪切力和拉力之外，還會受到：振動、溫度、側向應力（風力、流量、壓力等）、負載的改變等其他的一些作用力。
During construction, in addition to shear force and tensile force, it will also be subject to vibration, temperature, lateral stress (wind, flow, pressure, etc.), load change and other forces.
使用電動扭矩扳手控制施工扭矩是很重要的，如果所設定的扭矩值偏小，就會造成緊固不足，螺栓就會因振動或循環載荷而松脫，如果緊固過度，會使法蘭轉動使鋼結構斷裂。
It is very important to use the electric torque wrench to control the construction torque. If the set torque value is too small, it will lead to insufficient tightening, and the bolts will be loosened due to vibration or cyclic load. If the tightening is excessive, the flange will rotate and the steel structure will be broken.
