液压支架产生的故障绝大部分是由于操纵阀故障导致的.统计表明,操纵阀的故障90%以上是泄漏,由密封失效造成的操纵阀泄漏在支架故障中占很大比例,是支架故障的主要诱发原因.造成密封功能降低和失效的因素是多方面的,所以对操纵阀密封的失效分析与检测,必将成为解决泄漏故障的重点. Hydraulic brackets caused by the vast majority of failures caused by the control valve.Statistics show that more than 90% of the valve malfunction is a leak, caused by the seal failure of the control valve leakage in the stent failure accounted for a large proportion of the stent failure The main reason for causing the sealing function to reduce and failure factors are many, so the failure of the control valve seal analysis and testing will surely become the focus of the leak to solve the problem.