定扭矩電動扳手是“電”驅動的扳手，是指擰緊和拆卸螺栓螺母的電動工具，是擰緊高強度螺栓的工具。用于鋼橋、廠房、化工、發(fā)電設備安裝用大六角頭高強度螺栓的初擰和終擰，扭剪型高強度螺栓的初擰，以及對螺栓緊固件扭矩或軸向力有嚴格要求的地方。結構方面，定扭矩電動扳手有兩種：離合式和沖擊式。
Constant torque electric wrench is an "electric" driven wrench, which refers to an electric tool for tightening and removing bolts and nuts, and a tool for tightening high-strength bolts. It is used for the initial and final tightening of large hexagon head high-strength bolts for the installation of steel bridges, plants, chemical industry and power generation equipment, the initial tightening of torsion shear high-strength bolts, and places where there are strict requirements on the torque or axial force of bolt fasteners. In terms of structure, there are two kinds of constant torque electric wrenches: safety clutch type and impact type.
根據(jù)電源的不同，定扭矩電動扳手可分為帶電池的電動扳手和220伏電源的電動扳手。
According to different power supplies, the constant torque electric wrench can be divided into electric wrench with battery and electric wrench with 220 V power supply.
其中，帶電池的電動扳手體積小、重量輕、使用方便，但扭矩較小，一般用于驅動普通螺絲。220V電源的定扭矩電動扳手比電池的定扭矩電動扳手更重更大，主要是扭矩大，可以緊固高強度螺栓。
Among them, the electric wrench with battery has the advantages of small volume, light weight and convenient use, but the torque is small. It is generally used to drive ordinary screws. The constant torque electric wrench of 220V power supply is heavier and larger than the constant torque electric wrench of battery. The main reason is that the torque is large and can fasten high-strength bolts.
定扭矩電動扳手是一種常見的恒扭矩電動扳手，主要用于剛開始擰緊螺栓。它的使用非常簡單，就是對準螺栓，轉動電源開關就可以了。
Constant torque electric wrench is a common constant torque electric wrench, which is mainly used to tighten bolts at the beginning. Its use is very simple, that is, align the bolt and turn the power switch.
定扭矩電動扳手主要用于擰緊扭矩剪切高強度螺栓。它的用途是將扳手套筒與螺栓Torx頭對準，轉動電源開關，直到扭力剪切高強度螺栓的Torx頭斷裂。常見的電動扳手有槍型和角型。
Constant torque electric wrench is mainly used to tighten torque shear high-strength bolts. Its purpose is to align the wrench socket with the Torx head of the bolt and turn the power switch until the Torx head of the high-strength bolt is broken. Common electric wrenches are gun type and angle type.
具有固定扭矩的電動扳手可以初始擰緊和更終擰緊。它用于先調(diào)節(jié)扭矩，然后擰緊螺栓。常見的定扭矩電動扳手也有槍型和角型。
The electric wrench with fixed torque can be used for initial tightening and final tightening. It is used to adjust the torque first and then tighten the bolts. Common constant torque electric wrenches also have gun type and angle type.
定扭矩電動扳手施工現(xiàn)場注意事項：
Safety precautions for construction site of constant torque electric wrench:
在打開電源之前，有必要在插入開關之前檢查開關是否關閉。
Before turning on the power supply, it is necessary to check whether the switch is off before inserting the switch.
確認與現(xiàn)場連接的電源是否與恒扭矩電動扳手要求的電壓一致，是否有漏電保護器。
Confirm whether the power supply connected to the site is consistent with the voltage required by the constant torque electric wrench and whether there is a leakage protector.
根據(jù)螺母的尺寸選擇匹配的套筒，并正確安裝。
Select the matching sleeve according to the size of the nut and install it correctly.
不應使用過高或過低的電壓。
Too high or too low voltage should not be used.
不要將簡化的氣缸用作錘擊工具。
Do not use a simplified cylinder as a hammering tool.
不要在手搖桿上加套桿或撬桿施力。
Do not add a sleeve bar or crowbar on the hand lever to apply force.
電動扳手的金屬外殼需要可靠接地。
The metal shell of the electric wrench needs to be reliably grounded.
檢查定扭矩電動扳手本體安裝螺釘?shù)木o固情況。如果發(fā)現(xiàn)螺釘松動，需要立即重新擰緊。
Check the fastening of the mounting screws of the fixed torque electric wrench body. If the screws are found to be loose, they need to be retightened immediately.
檢查電動扳手兩側手柄是否完好，安裝是否牢固。
Check whether the handles on both sides of the electric wrench are intact and firmly installed.
站在梯子上或在高處作業(yè)時，應采取措施防止從高處墜落。
When standing on a ladder or working at heights, measures shall be taken to prevent falling from heights.
如果工作場所距離電源較遠，需要延長電纜時，必須使用容量足夠、安裝合格的延長電纜。
If the workplace is far away from the power supply and an extension cable is required, an extension cable with sufficient capacity and qualified installation must be used.
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