电牵引采煤机牵引部可靠性分析

摘要

For the problem that traditional manual reliability analysis method for traction unit of electrical haulage shearer could not find hidden fault real-timely,a reliability analysis method of traction unit of electrical haulage shearer was proposed which was based on fault tree analysis and fuzzy logic theory.Non-traction fault tree of the traction unit is built firstly,and failure degree of basic events in the fault tree is graded.Then membership degree of each basic event belonging to corresponding fault grade is calculated by use of fuzzy synthetic discrimination method,so as to get the fault form and fault rate of the traction unit in each working stage.The method can realize reliability analysis and health management of the traction unit of electrical haulage shearer.%针对传统采煤机牵引部可靠性分析采用人工方式而难以及时发现故障隐患的问题,提出了一种基于故障树分析和模糊逻辑理论的电牵引采煤机牵引部可靠性分析方法.首先建立电牵引采煤机牵引部不牵引故障树,对故障树中基本事件的故障程度进行等级划分;然后采用模糊综合评判方法计算每个基本事件隶属于相应故障等级的隶属度,得出牵引部在各工作阶段的故障形式及故障率,从而实现对电牵引采煤机牵引部的可靠性分析和健康管理.