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液壓系統的壓力不足或沒有壓力該怎么排除呢?
機器設備的液壓系統壓力不足或完全無壓力的主要原因是:壓力油路和溢流回路短接,或者系統有極其嚴峻的泄漏,也可能是油泵
根本就沒有吸上壓力油等所造成。
造成原因有可能是:
1、液壓油泵轉向分歧錯誤,或者電機功率不足,轉速過低,致使液壓油泵吸油能力低。也可能是吸油管太小,或者油管漏氣,油液黏度
太高,濾油器被雜物污物堵塞,吸油阻力增大等原因,導致油泵吸不上油液,使系統建立不起壓力。
2、壓力油路與回油路短接,溢流閥芯卡死在最大啟齒位置,遠程控制油口接通了油箱或有泄漏。也有可能是液壓元件的阻尼孔堵塞
,或者調壓彈簧折斷等原因而造成系統無壓力。
3、冷卻裝置失效,引起油溫升高,油的黏度下降;或者油泵內部機構磨損嚴峻,各運動件配合間隙增大,致使油泵容積效率下降。
4、管路小孔或節流閥孔堵塞,電磁換向閥失靈,致使滑閥處于常通位置等。
排除上述故障的方法是:
1、糾正油泵旋轉方向,修理或更換電機,檢查清洗吸油管和濾油器,更換黏度合適的液壓油。
2、檢查油路及遠程控制油口與溢流閥的連接狀況,修理和更換溢流閥和調壓彈簧。
3、修理或更換冷卻裝置和液壓油泵磨損件。在重新裝配油泵時,要特別留意各運動件的配合間隙。
4、檢查或修理換向滑閥,清晰管路小孔及節流閥口的雜質污物。
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The main reason of pressure of hydraulic system of machine equipment is insufficient or no pressure is the pressure circuit and overflow: short circuit, or the system has serious leakage, may also be pump
There is no suction pressure caused by oil etc..
The cause may be:
1 hydraulic pump, turn right, or electrical power shortage, low speed, the hydraulic oil pump suction capacity low. May also be the oil suction pipe is too small, or oil leakage, oil viscosity
Is too high, oil filter debris clogging dirt, causes suction resistance, resulting in pump suction no oil liquid, so that the system has not established pressure.
2, the pressure circuit and the return oil line short circuit, the overflow valve stuck position openings in the largest, remote control oil port connected to the tank or leakage. There may be damped Kong Dusai hydraulic 免費信息ponents
, or adjustable pressure spring break due to the system without pressure.
3, cooling device failure, caused by the temperature, decrease oil viscosity; or the internal pump serious wear and tear of the movement mechanism, increased clearance, resulting in decreased volumetric efficiency of pump.
Plug 4, pipe holes or throttle valve hole, the electromagb2bic directional valve failure, the valve spool is often the location.
Method to eliminate the trouble is:
1, to correct the oil pump rotation direction, repair or replacement of the motor, check and clean the oil suction pipe and oil filter, replace the hydraulic oil viscosity suitable.
In 2, check the circuit and remote control oil outlet and overflow valve, repair and replacement of the relief valve and the pressure regulating spring.
3, repair or replace the cooling device and a hydraulic pump wear parts. The reassembled pump, special attention should be paid to the gap with the moving parts.
4, inspection or repair reversing valve, clear impurities in small holes and the throttle valve pipe mouth.