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4021大桥11孔80米栓焊钢桁梁,有19万套高强度螺栓,个个都要求拧到同样的吨位。如何保证高速优质,施拧扳手是个关键。一桥处工人和革命技术人员怀着为伟大领袖毛主席争光,为伟大社会主义祖国争光的雄心壮志,发扬敢想、敢干的革命精神,大胆试验,土法自制成功带响定扭扳手,用到大桥栓焊梁架设中,效果很好(照片1)。这种扳手,轻便、灵活、一拧到规定扭矩,扳手就自动发出响声。与此同时,他们还自己设计、试制成一种可减轻体力的油压定扭扳手(照片2)。
4021 Bridge 11 holes 80 meters bolt welded steel truss, with 190,000 sets of high-strength bolts, all of them are required to screw to the same tonnage. How to ensure high-speed high-quality, screw wrench is a key. With the ambition of winning glory for Chairman Mao as the great leader and winning the glory for the great socialist motherland, the workers and revolutionary technicians at Bridge work to carry forward the revolutionary spirit of daring to think and dare to make bold tests. The use of bridge bolt beam erection, the effect is very good (Photo 1). This wrench, lightweight, flexible, a twist to the specified torque, the wrench automatically sounded. In the meantime, they also designed and prototyped a strain-relief hydraulic torque wrench (photo 2).