... fastener tightening torque 拧紧扭矩 Tightening Torque With Nut Nm 螺母拧紧力矩 Tightening torque and special tools 紧固扭矩和特殊工具 ...
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通过试验和理论分析厚、扁螺母在紧固过程中的受力情况，并从试验结果得到一个较合理的厚螺母拧紧力矩，既能保证塔式起重机的安全运行，又能延长螺栓的使用寿命。
Changing the positions of thin and thick nuts and using the right thick nut tightening torque ensure safe operation of the crane and longer lives of the screws.
给出了曲柄销联接螺母的最小拧紧力矩计算公式。
The equation for calculating minimum tightening torque on the crank pin nut is given.
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