起重机维护应注意的几个问题

针对起重机的用户在钢丝绳、制动器、减速器方面存在的一些误区，分析其危害，阐明正确的使用及维护方法。

In the light of some misunderstanding knowledge in elevator users about steel wire rope, brake and reducer, this paper makes an analysis of their damages, and expounds correct usage and maintenance methods.