为查明某工厂一台通用桥式起重机钢丝绳断裂导致重物坠落的事故原因,对断裂的钢丝绳进行理化检验、对断口形貌进行观察、对钢丝绳滑轮组和防跳绳安全保护装置的结构进行分析。结果表明:导致事故的直接原因是防跳绳安全保护装置的结构设计存在严重缺陷。 In order to find out the causes of heavy objects falling caused by the breakage of a common overhead crane wire rope in a factory, physical and chemical tests were conducted on the broken steel wire rope, the fracture appearance was observed, and the structure of the rope pulley block and anti-skipping rope safety protection device was analyzed. The result shows that the direct cause of the accident is serious flaws in the structural design of anti-skipping safety protection device.