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在车床上工作的同志,有时在卡完活以后,还没有取下扳手,就去开车,结果扳手不是飞出来打伤了人,就是卡在床面上,把什么零件卡坏了。这种情况,不但刚上车床的新工人容易发生,就是老师傅也不能完全避免。苏联基洛夫工厂的工人,应用了如附图的安全扳手,就完全避免了这种机械事故。附图中,1是套筒。套筒中装有向外撑的弹簧2。3是弹簧挡圈,它扣在扳手杆的槽内,挡住套筒1。使用的时候,和普通的
The comrades who work on lathes sometimes do not remove the wrench and go to drive after the card has been activated. As a result, the wrench does not fly out and injure a person, that is, the card is stuck on the bed and what part card is broken. In this case, not only new workers on the lathe are prone to happen, but also the old masters can not completely avoid it. The workers at the Kirov factory in the Soviet Union completely eliminated this kind of mechanical accident by using a safety wrench as shown in the accompanying figure. In the drawings, 1 is a sleeve. The sleeve is provided with outwardly supporting spring 2.3 is a spring retainer, which buckle in the wrench lever groove, blocking the sleeve 1. When used, and normal