液压支架电液控制系统故障诊断技术研究

Study on fault diagnosis technology of electro-hydraulic control system applied in hydraulic powered support

为解决液压支架电液控制系统使用过程中系统维护难度大、系统故障不能及时排除等问题,介绍了电液控制故障诊断的现状,系统分析了电液控制系统的失效模式与失效机理,通过对电液控制系统故障信息的分类、归纳、总结提炼,构建了电液控制系统故障树。从电液控制系统基本工作原理入手,以电液控制系统各部件行使的基本职能为依据,提出故障辨识的判别准则,完成了电液控制系统故障诊断系统的方案设计,进行了支架控制器及其配套传感器和执行单元的故障分析,并提出了相应的故障辨识方法,提出了故障诊断系统软件界面可视化实施方案,液压支架电液控制系统故障诊断技术已在红柳林、巴彦高勒煤矿等多个矿区得到广泛应用,可使液压支架电液控制系统故障及时排除。

In order to solve high difficult system maintenance in the application process of the electro-hydraulic control system applied to the hydraulic powered support and hard to on time remove the system failure and others,the paper introduced the fault diagnosis status of the electro-hydraulic control and systematically analyzed the failure mode and failure mechanism of the electro-hydraulic control system.With the classification,conclusion and summarized extraction on the failure information of the electro-hydraulic control system,a fault tree of the electro-hydraulic control system was established. From the basic working principle of the electro-hydraulic control system,with the basic function conducted by each component of the electro-hydraulic control system as the basis,the discrimination criterion of the fault identification was provided and a plan design on the fault diagnosis system of the electro-hydraulic control system was completed. A failure analysis was conducted on the powered support controller and matched sensor as well as the executive unit. Meanwhile,the identification method of the relevant fault was provided. An implementation plan on the interface visualization of the fault diagnosis system software was provided. The fault diagnosis technology of the electro-hydraulic control system for the powered support was widely applied to the Hongliulin Mine,Bayan Gaole Mine and other several mines and the failure of the electro-hydraulic control system for the powered support could be timely removed.