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          液壓機壓力問題,無壓力、系統靜態高壓、壓力不足的故障原因分析

          液壓機壓力問題,無壓力、系統靜態高壓、壓力不足的故障原因分析

          作者:admin    來源:未知    發布時間:2020-08-26 18:51    瀏覽量:

          液壓機無任何動作各油缸不上不下首先看在系統是否有壓力可以觀察系統壓力表,(一般泵站上會有三塊壓力表BP1系統壓力表BP2主缸上腔電接點壓力表BP3頂出缸無桿腔壓力表)BP1如果沒有壓力,先觀察油泵電機轉向,是否吸空,排除油泵自身溢流,系統上單動系統閥,排除插件中間針孔式阻尼孔堵塞,插件卡死,先導溢流閥進去異物,先導電磁閥不工作

          P1開泵后居高不下,系統插件卡在閉合狀態,先導電磁閥卡在吸合狀態,先導電磁閥異常帶電,蓋板中間阻尼孔堵塞。

          BPI壓力不足達不到額定壓力時一般拆開系統閥看是否有異物,密封圈是否有破損或老化。插件是否變形造成密封不嚴電磁閥內泄,確認后檢查油泵,拆開油泵上面泄油孔看回油是否過多。液壓油粘度達不到,或油溫過高如果BPI正常而BP2壓力異常除檢查相應溢流閥外還要排除油缸充液閥。4調試過程中遠程調壓閥管路上混入空氣會出現升壓滯后,油泵流量變小會出現升壓速度變慢。

           

          If there is no pressure in the pump station, observe the steering direction of the oil pump motor, and check whether the oil pump is empty or not, The single acting system valve in the system eliminates that the pinhole damping hole in the middle of the plug-in is blocked, the plug-in is stuck, the pilot relief valve enters foreign matters, and the pilot solenoid valve does not work

          P1 remained high after the pump was started, the system plug-in was stuck in the closed state, the pilot solenoid valve was stuck in the on state, the pilot solenoid valve was abnormally charged, and the damping hole in the middle of the cover plate was blocked.

          When the BPI pressure is not enough to reach the rated pressure, generally open the system valve to see whether there are foreign matters and whether the sealing ring is damaged or aged. If the plug-in is deformed and the sealing is not tight, check the oil pump after confirmation and disassemble the oil drain hole on the oil pump to see if there is too much oil return. If the viscosity of the hydraulic oil cannot reach or the oil temperature is too high, if the BPI is normal and the pressure of bp2 is abnormal, besides checking the corresponding relief valve, it is also necessary to remove the cylinder filling valve. 4. In the process of commissioning, when air is mixed into the pipeline of remote pressure regulating valve, the pressure rise lag will occur, and the speed of pressure rise will slow down when the flow of oil pump becomes smaller.

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