基于评点法的液压挖掘机故障风险评定  

Failure Risk Assessment of Hydraulic Excavators Based on Evaluating-point Approach

作　　者：刘汉光[1] 田磊[1] 冯国弟[1] 

机构地区：[1]江苏徐州工程机械研究院

出　　处：《工程机械》2016年第10期17-24,共8页Construction Machinery and Equipment

基　　金：国家科技支撑计划项目(2015BAF07B02)

摘　　要：针对液压挖掘机故障风险分析中故障风险难以定量评价的问题,提出综合考虑故障对功能的影响程度、故障对系统的影响程度、故障发生的概率等三方面因素,通过应用半定量的评点法来进行故障风险评估。结合液压挖掘机在作业过程中出现的故障,按照风险评价理论,利用评点法对故障风险等级进行评定。相关方法便于用户更加直观地了解液压挖掘机当前的运行状况,为合理维护保养及使用提供理论依据。In view of difficult quantitative assessment and analysis on failure risks in a hydraulic excavator there was put out a mixed consideration of degrees of the trouble affecting the excavator＇s functions,affecting the system,and possibility of the occurrence,so as to carry out such an assessment by utilizing a semi qualitative local evaluation,i.e.in consideration of failures happening in operation according to risk-assess theories and utilizing a local evaluation method.These relative methods can facilitate the end-user to understand the hydraulic excavator＇s existing working conditions,thus providing a theoretical basis for logic maintenance and service as well as operation of the machine.

关 键 词：液压挖掘机 评点法 故障风险等级 故障机理 

分 类 号：TU621[建筑科学—建筑技术科学]