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在对履带式挖掘机故障调查统计分析中发现，液压系统泄漏故障占２０％～３０％，而液压缸的泄漏又占其中的３３％。因此液压缸的泄漏已成为工程机械液压系统的主要故障。 液压缸的泄漏一般分为内泄漏和外漏两种情况。内泄漏主要影响液压缸的技术性能，使之出现出力不足、运动速
In the statistical analysis of caterpillar excavator fault investigation, it was found that the hydraulic system leaks accounted for 20% ~ 30%, while the hydraulic cylinder leakage accounted for 33% of them. Therefore, the hydraulic cylinder leakage has become a major hydraulic system engineering machinery failure. Hydraulic cylinder leakage is generally divided into two cases of internal leakage and leakage. Internal leakage mainly affects the technical performance of the hydraulic cylinder, so that there is insufficient output, speed of movement