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1.破碎锤无法工作1台使用了1100h的徐工XE150D型挖掘机安装破碎锤后,出现破碎锤无法工作现象,其他工作装置动作正常。(1)检测系统压力操纵该机破碎锤,测量破碎二次先导压力为3.9MPa,属正常;测量主系统压力为3.2MPa,压力过低(破碎锤二次溢流阀设定压力为17MPa),怀疑可能是液压系统存在故障。对照破碎锤液压回路(参见图1)分析认为,最大可能是破碎锤二次溢流阀有问题。
1. Broken hammer can not work 1 set using 1100h XCMG XE150D excavator installed broken hammer, broken hammer can not work phenomenon, the other working device is operating normally. (1) The pressure of the testing system is used to control the crusher of the machine, the crushing secondary pilot pressure is 3.9MPa, which is normal; the pressure of the main system is measured at 3.2MPa and the pressure is too low (the pressure of the crusher secondary relief valve is set at 17MPa) , It is suspected that the hydraulic system may be faulty. Control hammer hydraulic circuit (see Figure 1) analysis, the maximum possible breach hammer secondary relief valve problems.