联接器是联接机车和矿车的部件，常用的有插销链环和回转链，大型矿车采用兼具缓冲器作用的自动车钩。
Coupling is a coupling of locomotive and car parts, commonly used have a link bolt and rotary chain, large car adopts automatic coupling with both buffer action.
文章对运用部门反映的几个导致车钩自动分离的原因，用分析或推演的方法逐一做了甄别，得出提钩链松余量不足应是导致车钩自动分离的主要原因，并据此提出了建议措施。
In this paper, several reasons that cause the self-separation of couplers reflected by operation departments are screened one by one with the analysis or deduction method.
对造成货物列车分离的原因进行了归纳：解钩装置造成的分离；钩尾框断裂及车钩自动分离。
The essay concludes the causes resulting in separation of freight train, such as separation due to the uncoupling device, rupture of coupler yoke as well as the natural separation of train couplers.
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