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标题汇通教你预防挖掘机挖斗缸损坏技巧

最近挖斗操作工发现他的一台挖掘机在进行开沟作业时挖斗动作逐渐缓慢直至无法正常工作现场工作人员无法排除故障经技术人员分析有可能是挖斗缸出现故障经检查发现该机回油滤芯中有大量的金属粉末黑色橡胶块棕色尼龙物和小金属颗粒等


拆检挖斗缸发现活塞密封环耐磨环完全损坏2道钢质环卡死在活塞环槽中呈断裂状缸筒内壁被严重拉伤筒底有大量的金属粉末及颗粒以上检查结果表明挖斗缸确已损坏


经现场综合分析认为因为金属疲劳等因素造成挖斗缸活塞?#31995;?#38050;质环断裂导致活塞与缸筒直接接触在活塞杆频繁伸缩过程中钢质环断裂茬口不断?#25991;?#25366;斗缸内壁将缸壁拉伤而导致内泄从而使挖斗缸运动速度下降随着工作时间的增加密封环的损坏和缸壁拉伤不断加重造成挖斗缸内泄更加严重以致操纵阀控制不了挖斗缸的动作


那么我们如何应该采取哪些预防措施呢首先应规范操作挖掘机作业中若挖斗缸活塞杆到达有杆腔行程终点时在压力和冲击作用?#24405;?#26131;造成其内部限?#25442;?#25439;坏从而降低挖斗缸使用寿命因此在操作机器时挖斗缸应保留1020cm的伸缩余量这样操作可以防止因长时间大载荷冲击造成活塞上钢质环和限?#25442;?#30340;疲劳损坏


挖掘机作业时挖掘深度和挖掘范围不断变化因此作业时应尽可能使挖斗缸?#22303;?#26438;斗杆缸和斗杆成90角不要一直使其达到行程末端这样可使挖掘机获得最大挖掘力和最大工作效率


合理保养应根据挖掘机作业项目和使用工况因地制宜合理进行换油保养与挖斗挖掘相比经常使用液压破碎器破碎时液压油变质更加?#26438;١?#24403;使用液压破碎器工作时应按规定时间进行保养


对于安装破碎锤的挖掘机必须每连续破碎500小时更换液压油每连续破碎100小时更换回油滤芯先导滤芯对于挖掘?#25512;?#30862;每混用1000小时更换液压油每混用300小时更换回油滤芯先导滤芯


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