论文部分内容阅读
2016年3月，湖南某办公楼一台电梯发生了一起很少见的电梯曳引轮从主轴脱离的事故，曳引钢丝绳也全部从曳引轮轮槽脱出，曳引轮的3颗端盖固定螺栓全部断裂，现场调查发现，曳引轮与主轴之间采用锥形连接配合，并且平键与键槽之间存在明显的间隙，文章结合机械设计相关理论对事故进行综合分析，解释了事故主要原因为曳引轮与主轴的平键连接配合质量不合格，为制造单位改善设计，提高关键零部件的安全系数提供参考。“,”In March 2016, an accident happened in an ofifce building in Hunan, because the elevator traction wheel separated from the main shaft, and the traction rope fell out from the traction wheel slot, three bolts on the traction wheel end cover fractured. Investigation was taken to analyze the reasons, it is found that tapered shape connection is used for the connect between traction wheel and spindle, and gaps are found between the lfat key and the keyway. The paper explains the main causes of accident according to the mechanical design theory. It is found that the accident main reason is the unqualiifed lfat key connection between the traction wheel and the spindle. The result provides a reference for design to improve the safety factor of the key parts.