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Z525钻床常因变速齿轮箱中的柱塞供油泵发生故障而影响正常使用。我们在维修时发现,常出现的故障是顶簧断裂和柱塞卡死。分析原柱塞泵的结构,该泵存在以下缺点:1.柱塞外径较小,往复行程较长,柱塞顶簧容易疲劳损坏。2.凸轮直接与柱塞接触,而接触处是干摩擦,凸轮转速比较高,摩擦产生的热量,使细长的柱塞容易卡死在阀孔内。3.由于泵的结构问题,阀孔易造成局部磨损,影响泵的正常供油。
Z525 drilling machine often due to variable speed gearbox plunger pump failure and affect normal use. We found in maintenance, the breakdown is often the top spring fracture and the plunger stuck. Analysis of the structure of the original piston pump, the pump has the following disadvantages: 1. Plunger smaller diameter, reciprocating stroke longer plunger fatigue prone to fatigue. 2. Cam directly contact with the plunger, and the contact is dry friction, the cam speed is relatively high, the heat generated by friction, the slender plunger stuck in the valve hole. 3. Due to the structural problems of the pump, the valve hole can easily lead to local wear and tear, affecting the normal supply of the pump.