桥式脚手架是一种省工、省料,操作方便,经济效益较好的外脚手架,目前不仅广泛用作多层建筑施工,而且发展到在高层建筑施工中使用。由于桥架在升桥或落桥时容易发生断绳、脱钩及倒链故障等情况,致使桥架坠落,造成重大伤亡事故。尽管安全部门规定用辅助绳作为保险,但由于不易保持同步升降、操作繁琐,往往未能采用,安全没有保障。为弥补桥式脚手架的这一缺点,我公司研究成功了断绳保险装置,做过百余次断绳试验并且做了16m桥荷载511.5kgf(本文中 Bridge Scaffolding is an external scaffolding that saves labor and material, is easy to operate, and has good economic benefits. It is not only widely used as a multi-story building, but also used in the construction of high-rise buildings. As the bridge rises or falls off the bridge, it is prone to break ropes, decoupling, and chain failures, causing the bridge to fall, causing serious casualties. Although the security department stipulates that the auxiliary rope is used as insurance, it is often not adopted because it is difficult to maintain synchronous lifting and the operation is cumbersome, and safety is not guaranteed. In order to make up for this shortcoming of the bridge scaffolding, our company succeeded in researching the broken rope safety device, doing more than one hundred broken rope tests and doing a 16m bridge load 511.5kgf (in this article