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１．螺纹连接松动、断裂原因及防松、防断措施 （ｌ）松动、断裂原因 在螺纹连接中螺纹牙之间存在一定间隙（轴向和径向），在径向载荷（变载、振动、冲击）作用下，螺母和螺栓之间就会产生不同频率的振动，导致螺纹副的摩擦力急剧下降，甚至消失，最后导致螺母回转、松动；另?
1. Loose connections, causes of cracks and anti-loosening, anti-loosing measures (l) Loosening, the reason for the fracture There is a certain gap (axial and radial) between the thread teeth in the threaded connection, the radial load ) Under the action of the nut and bolt will have different frequencies of vibration, resulting in a sharp decline in the friction of the thread deputy, or even disappear, leading to nut rotation, loose; the other?