浅析电梯冲顶事故之制动器材质问题

Analysis on the Material Problems of Elevator Hoisting Accident

电梯制动器是频繁使用的安全部件,也是维持电梯安全运行的重要基础。本文结合一起电梯冲顶事故,对事故电梯的制动器进行拆解,分析其内部结构型式,观察其受损情况,直观分析制动器的失效特征。基于相关试验和技术分析,由于制动器柱塞因本体材质问题引发机械卡阻,致使制动器制动功能失效。结合制动器失效的原因,建议在有关电梯法规标准中考虑增加对制动器相关零部件材质、化学成分符合性的要求,避免类似事故的再次发生。

Brake is a frequently used safety part of elevator, also it is the important basis to maintain the safe operation of the elevator. Combined with an elevator hoisting accident, this paper dismantles the elevator brake, analyzes its internal structure type, observes the damage, intuitively analyzes the failure characteristics of the brake. Based on the related test and technical analysis, it is found that mechanical jam caused by the brake piston body material problem results in brake function failure. Combined with the brake failure reason, it suggests to increase material and chemical composition requirements for break part in in elevator standard and law, to avoid similar accidents happening again.