谈电梯制动器的附加二次保护和自身二次保护

Auxiliary Protection for Brake of Elevator and Its Protection by Itself

介绍了电梯曳引机制动器二次保护的一些基本特点和几种基本方式；指出制动器二次保护的基本模式有制动器附加二次保护和制动器自身二次保护；重点分析了制动器自身二次保护中的异步制动和分时制动的原理和应注意的问题。

Some basic characteristics and patterns of brake auxiliary protection for elevator traction machine are introduced. That brake additional protection and their own protection of brake are the basic mode of the auxiliary protection of brake is pointed out. The analysis of braking principle of the asynchronous brake and time-sharing brake for brake protection by itself and the problems should be paid attention to are focused on.