扭剪扳手主要應用于鋼結構安裝行業(yè)，專門安裝鋼結構高強螺栓。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，非國標的扭剪型螺栓有M27、M30兩種。

Twist shear wrenches are mainly used in the steel structure installation industry, specifically for installing high-strength bolts in steel structures. High strength bolts can be divided into two types: torsion shear type and large hexagonal type. The national standard torsion shear type high strength bolts are M16, M20, M22, and M24, while non national standard torsion shear type bolts are M27 and M30.

一般的，對于扭剪型高強螺栓的緊固都要經過初緊和終緊兩個步驟，而且每步都需要有嚴格的扭矩要求。在實踐中，操作人員緊固扭剪型高強度螺栓時，一般是先采用沖擊扳手或定扭矩扳手完成初緊，然后再利用扭剪扳手完成終緊。在實際操作環(huán)境下，鋼架連接結構上需要使用多個螺栓，形成了螺栓集群，若將螺栓一個一個地按順序一次性完成緊固，會產生無法均等緊固的問題，正確的操作方式為先將螺栓集群的每一個螺栓進行一次緊固，即初緊，當一次緊固完成時，所有的螺栓達到了基本相同的一次緊固扭矩，然后再將螺栓進行終緊固，直到扭剪型螺栓的頸部被剪斷為止。

Generally, the tightening of torsion shear high-strength bolts requires two steps: initial tightening and final tightening, and each step requires strict torque requirements. In practice, when tightening high-strength torsion shear bolts, operators usually use an impact wrench or a fixed torque wrench to complete the initial tightening, and then use the torsion shear wrench to complete the final tightening. In practical operating environments, multiple bolts are required on the steel frame connection structure to form a bolt cluster. If the bolts are tightened one by one in sequence, it will cause the problem of uneven tightening. The correct operating method is to first tighten each bolt in the bolt cluster, that is, initial tightening. When one tightening is completed, all bolts reach the basic same initial tightening torque, and then finally tighten the bolts until the neck of the shear type bolt is cut off.

現(xiàn)有的扭剪型電動扳手可分為初緊扭剪型電動扳手和終緊扭剪型電動扳手，它們通常都只有一種傳動比輸出。現(xiàn)有的初緊扭剪扳手的扭矩控制范圍小，無法同時覆蓋初緊和終緊高強度螺栓的扭矩需求，而現(xiàn)有的終緊扭剪型電動扳手，對扭矩不加控制，以扭剪斷扭剪型高強度螺栓頸部為準，無法用于初緊高強度扭剪型螺栓。由此，對扭剪型高強度螺栓施工，需要一把初緊扭剪型扳手，通?？捎脹_擊扳手或定扭矩扳手替代，還需要一把終緊扭剪型扳手，這樣增加了用工成本，還增加了施工人員的搬運負擔，特別是在高處作業(yè)時，攜帶兩把電動工具非常不便。

The existing torque type electric wrenches can be divided into initial tightening torque type electric wrenches and final tightening torque type electric wrenches, which usually only have one transmission ratio output. The torque control range of the existing initial tightening torque wrench is small and cannot cover the torque requirements of both initial and final tightening high-strength bolts. However, the existing final tightening torque wrench does not control the torque and is based on the neck of the high-strength bolt, which cannot be used for initial tightening high-strength torque shear bolts. Therefore, for the construction of high-strength torsion shear bolts, an initial tightening torsion shear wrench is required, which can usually be replaced by an impact wrench or a fixed torque wrench. In addition, a final tightening torsion shear wrench is required, which increases labor costs and also increases the transportation burden of construction personnel. Especially when working at heights, carrying two electric tools is very inconvenient.

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