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挖掘机液压泵有异响怎么办?

日期:2018-11-29   来源:
挖掘机在运转中可能会感觉到液压泵有异响,下面由小编给咱们介绍一下排查方法!
Excavator in operation may feel the abnormal noise of hydraulic pump, the following is a small edition to introduce to us the method of investigation! uuuuuuuuuuu
假如听到液压泵有声响,咱们首先应:
If we hear the sound of the hydraulic pump, we should first:
1、测验液压泵压力是否正常;
1. Testing whether the pressure of hydraulic pump is normal;
2、确认液压泵两根输出油管是否有严重颤动的现象;
2. Confirm whether there is serious flutter in the two output tubing of the hydraulic pump.
3、确认油箱内部液压回油滤芯内是否有金属粉末。
3. Verify whether there is metal powder in the hydraulic return filter element inside the tank.
如以上三点确认正常,那么液压泵发出的声响是正常的,之所以有响声是因为:
If the above three points are confirmed to be normal, then the sound produced by the hydraulic pump is normal. The reason for the noise is that:
a、挖掘机的液压泵排量比其他机型更大;
A. The displacement of hydraulic pump of excavator is larger than that of other types.
b、液压泵装置室的边门未密封,有散热孔,和封闭式的比较而言有一定的噪音。
B. The side door of the hydraulic pump device room is not sealed and has a heat sink. Compared with the closed type, it has certain noise.
在第2点中,油管颤动应留意:
In point 2, tubing flutter should be noted:
1、油管颤动是否是因为压力变动大,不稳定引起的。
1. Is tubing flutter caused by pressure fluctuation and instability?
2、先导滤芯有阻塞的现象,应常常清洗,以防阻塞;
2. The pilot filter element is blocked and should be cleaned frequently to prevent blocking.
3、查看安全电磁阀开关是否切换异常。
3. Check whether the switch of safety solenoid valve is abnormal.
假如确定液压泵响声不正常,应从以下方面考虑:
If it is determined that the sound of hydraulic pump is abnormal, the following aspects should be considered:
1、是否使用的正品的液压油以及液压回油滤芯;
1. Whether to use authentic hydraulic oil and hydraulic return filter element;
2、液压油污染严重;挖掘机需求定时进行保养,特别是常常进行破碎作业更是要留意液压油的污染状况,建议一般5000小时替换一次液压油,打破碎600小时就应进行替换,因为油的污染,难以达到应有的润滑及维护效果;
2. Hydraulic oil pollution is serious. Excavators need regular maintenance, especially when breaking operations. It is necessary to pay attention to the pollution of hydraulic oil. It is suggested that the hydraulic oil should be replaced once in 5000 hours and 600 hours after breaking. Because of oil pollution, it is difficult to achieve the proper lubrication and maintenance effect.
3、油路不畅通,可能为液压油缺乏或吸油滤芯阻塞,吸入空气后形成对泵的损伤;
3. The obstruction of oil passage may be due to lack of hydraulic oil or blockage of oil-absorbing filter element, which may cause damage to the pump after inhaling air.
4、液压泵装置精度不够;
4. The accuracy of hydraulic pump device is not enough.
5、调节器和电磁阀部分工作不正常,不能将液压泵的斜盘视点调整到需求的视点,引起液压泵输出的流量不能与需求的流量匹配,形成泵的异响;
5. The regulator and solenoid valve parts are not working properly, and can't adjust the view of the hydraulic pump's swashplate to the view of demand, which causes the output flow of the hydraulic pump can't match the flow of demand, thus forming the abnormal sound of the pump.
6、因为不标准作业或超负荷运转,形成对液压系统冲击过大,泄压阀发生泄压声;
6. Because of non-standard operation or overload operation, the hydraulic system is impacted too much, and the pressure relief valve produces pressure relief sound.
7、热机时间缺乏时就进行作业,热机缺乏会形成液压油粘度较高,影响
7. When the heat engine is short of time, the operation will be carried out. The lack of heat engine will result in higher viscosity of hydraulic oil, which will affect the operation.
其流动性,形成对泵的冲击过大。
Its fluidity, the formation of excessive impact on the pump.

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