在现代的机械结构中,螺纹连接是最普通的、用量较大的一种连接方式。它大约占各种连接方式的30％,它的装配工作量是各种装配总工作量的25～35％,因此提高螺纹连接的可靠性和装配效率,意义很大。通常,螺纹连接处的损坏大多是由于螺纹松动而造成的。在汽车、坦克和战斗车辆上,为防止螺纹松动,常使用弹簧垫圈、防松扳垫、穿开口销、装冕形螺母和扎钢丝等方法。除 In the modern mechanical structure, the threaded connection is the most common, a larger amount of a connection. It accounts for about 30% of all connections, and its assembly workload is 25-35% of the total work load on all types of assemblies, thus increasing the reliability and assembly efficiency of the threaded connections. Often, damage to the threaded connections is mostly due to loose threads. In cars, tanks and combat vehicles, in order to prevent loosening of the screw, often use spring washers, anti-loose mats, open cotter pin, crown nut and tie wire and other methods. except