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汽车起重机采用的液压泵主要有柱塞泵与齿轮泵两类,常用的轴向柱塞泵有斜盘式和斜轴式的两种,齿轮泵有单联、双联和三联的几种。笔者结合多年维修汽车起重机的经历,谈谈液压泵几种比较简单的修理方法。1.柱塞泵的修理柱塞泵经长期使用后,柱塞外圆与缸体孔均会磨损,使泵的容积效率降低,影响起重机的性能。现以QY8型起重机常用的75泵为例说明其简易修理方法。75泵通过7个柱塞在缸体孔中作往复轴向直线运动,不断改变位置来进
There are two types of hydraulic pumps used in truck cranes: piston pump and gear pump. There are two types of commonly used axial piston pump: swash plate type and inclined shaft type. Gear pump has single type, double type and triple type. The author combined many years of experience in the maintenance of truck cranes, talk about several simple pump repair methods. 1. Piston pump repair After long-term use of the plunger pump, the plunger outer cylindrical bore will wear, reducing the volumetric efficiency of the pump, affecting the performance of the crane. QY8 crane is now commonly used 75 pump as an example of its simple method of repair. 75 pump through the 7 piston in the cylinder bore for reciprocating axial linear motion, constantly changing position to