断链的产生原因一般有如下几种情况； The causes of broken chain are generally as follows; 1、选型设计师的计算错误或选型错误，以使选用的链条不能满足正常运行时的工作张力。 1, select the designer's calculation errors or type selection errors, so that the selected chains can not meet the normal working tension. 2、链条制造质量没达到设计要求，许用载荷低于选型的数值。 2, the chain manufacturing quality has not met the design requirements, allowable load is lower than the type selection value. 3、链条上的开口销磨损而没及时更换，以便连接销轴脱落而断链。 3, the chain pin wear and no change in time, so that the connecting pin shaft and chain breaking off. 4、输送物料中混入大块硬物或铁件，链条在运行中突然卡住过载而断链。 4, the transport of materials mixed with large pieces of hard or iron parts, the chain in operation suddenly stuck, overload and broken chain. 5、全机安装时不慎或因为振动、撞击而使机壳之间的连接法兰、导轨处，出现上下、左右较大的错移，致使链条被卡住过载而断链。 5, the whole machine installation, careless or because of vibration, impact, so that between the chassis of the connecting flange, rail, the upper and lower, left and right of the larger shift, resulting in the chain is stuck, overload and broken chain. 管链输送机在断链后需更换链节，并分析其原因，相应采取措施，以防止再次断链。为了从根本上防止断链发生，从选型设计、制造、安装和使用维修的每个环节都应予以重视。 The chain conveyor needs to change the link after breaking the chain, and analyzes the reasons, and takes corresponding measures to prevent the chain breaking again. In order to prevent chain breaking fundamentally, attention should be paid to every aspect of the selection, design, manufacture, installation and maintenance of the chain.