论文部分内容阅读
液压挖掘机斗杆缸活塞杆发生自动伸出(俗称“掉缸”)故障,不但会使挖掘机工作效率降低,还会给挖掘施工带来不安全因素。斗杆缸活塞杆自动伸出故障的原因有2点:一是斗杆缸本身存在内泄,二是控制阀或管路产生泄漏。该故障可能涉及的液压元件比较多,故障部位很难确定。本人根据实践经验,总结出一种判断故障原因的简便方法。具体如下:首先启动发动机,将斗杆缸活塞杆缩回2/3长度(此时斗杆处于伸出状
Hydraulic excavator rod cylinder rod occurs automatically extended (commonly known as “off cylinder ”) failure, not only will reduce the excavator efficiency, but also to excavation construction brings unsafe factors. Arm cylinder piston rod automatically extend the cause of the fault there are 2 points: First, there is internal cylinder arm cylinder leakage, the second is the control valve or pipeline leakage. The fault may involve more hydraulic components, fault location is difficult to determine. I based on practical experience, summed up a simple way to determine the cause of the malfunction. As follows: First, start the engine, the rod cylinder piston rod retracted 2/3 length (at this time the stick is sticking out