论文部分内容阅读
液压挖掘机回转马达补油压力的高低,对回转马达使用寿命和液压系统热平衡有很大影响。为此,需及时对回转马达补油压力进行测量和调整,以提高回转马达使用寿命及可靠性。1.中位补油原理以回转马达按顺时针方向旋转为例(A口进油,B口回油),当挖掘机停止回转时,上车平台会带动马达继续旋转,如附图所示。停止回转后回转阀芯回到中位,回转马达A、B口油路被切断,此时若没有油液补入马达进油口,马达进油口将产生吸空。因此,利用补
Hydraulic excavator rotary motor charge pressure level, the rotary motor life and hydraulic system thermal balance has a great impact. To this end, it is necessary to make timely measurement and adjustment of the rotary motor charging pressure to improve the service life and reliability of the rotary motor. 1. Median oil filling principle Rotary motor clockwise rotation as an example (A port into the oil, B port back to the oil), when the excavator to stop turning, the car platform will drive the motor continues to rotate, as shown in the figure . After stopping the rotation, the rotary valve spool will return to the neutral position, and the oil path of the rotary motor A and B will be cut off. At this time, if no oil is added into the motor inlet, the intake of the motor will generate suction. Therefore, the use of make up