现场诊断液压油缸漂移量超限的原因郭永安（铁三局机械处太原）在现场操作中，经常发现某液压机械的液压油缸漂移量大或超限，故障的原因可能是油缸活塞密封损坏或者控制阀等元件泄漏（内泄）而引起的。经过分析及实践证明，按如下方法进行检查，可较准确地找到故障的原因... Reason for over-limit drift of hydraulic cylinder on-site Guo Yongan (Taiyuan Mechanical Bureau of Iron Third Machinery Bureau) In operation on site, it is often found that the hydraulic cylinder displacement of a hydraulic machine is large or overrun. The reason for the failure may be that the cylinder piston seal is damaged or Control valves and other components leak (internal leakage) caused. After analysis and practice proved that, according to the following method to check, can more accurately find the cause of the fault ...