震动常常引起自行车许多零件的松动。

Vibration often springs many parts of the bike.

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铲状螺栓以一种紧密、牢固和经济的方式固定零件，解决螺丝容易松动的问题，提高组装的效率。

Spade bolts provide a compact, strong and economical means of locating and retaining parts or assemblies in position. They eliminate the need for loose screws and facilitate assembly operations.

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在自动卷簧机的操作方面，用户需要检查零件之间的间隙、锁紧螺丝手柄的使用效果、螺丝拧紧是否有松动。

In the operation of automatic spring coiling machine, the user needs to check the clearance between the parts, the use of the locking screw handle, screw tightening is loose.

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