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            全自動上料攪拌車液壓系統壓力不足或無壓力

            所屬分類:行業新聞 發布時間:2021-11-16 來源:http://www.aqtop.com 瀏覽量:18

            全自動上料攪拌車液壓系統壓力不足或完全無壓力的原因、診斷和排除,可以根據以下幾個方面進行:
            The causes, diagnosis and troubleshooting of insufficient or no pressure in the hydraulic system of the full-automatic feeding mixer can be carried out according to the following aspects:
            (1)液壓泵是否能輸出液壓油。若無液壓油輸出,則可能是泵的轉向不對,零件磨損嚴重或損壞:吸油管阻力過大(濾油器阻塞、油液黏度過大等)或漏氣。如果是新的液壓泵,可能是泵體有鑄造缺陷(縮孔、砂眼等),使吸油腔和壓油腔相通,失去壓油能力,輸入功率不足,使泵的輸油壓力達不到工作壓力,泵軸扭斷,而輸不出油。
            (1) Whether the hydraulic pump can output hydraulic oil. If there is no hydraulic oil output, it may be that the steering of the pump is wrong, the parts are seriously worn or damaged: the resistance of the oil suction pipe is too large (the oil filter is blocked, the oil viscosity is too large, etc.) or there is air leakage. If it is a new hydraulic pump, the pump body may have casting defects (shrinkage cavity, sand hole, etc.), so that the oil suction chamber and oil pressure chamber are connected, the oil pressure capacity is lost, and the input power is insufficient, so that the oil delivery pressure of the pump can not reach the working pressure, the pump shaft is twisted and cannot deliver oil.

            全自動上料攪拌車

            若液壓泵有油液輸出,則應檢查各回油管,觀察哪個部件溢油。如溢流閥回油管溢油,可能是調定壓力低。此時,擰緊溢流閥調壓彈簧,若壓力無變化,則可能是溢流閥主閥芯或先導部分的錐閥因臟物或銹蝕而卡死在開口位置;或因彈簧折斷失去作用;或因阻尼孔被臟物堵塞,泵輸出的油液立即經溢流閥流回油箱。排除方法:應拆開溢流閥,加以清洗。檢查或更換彈簧,恢復其工作性能。
            If the hydraulic pump has oil output, check each oil return pipe and observe which part overflows. If the oil return pipe of the overflow valve overflows, the set pressure may be low. At this time, tighten the pressure regulating spring of the overflow valve. If the pressure does not change, the cone valve of the main valve core or pilot part of the overflow valve may be stuck in the opening position due to dirt or corrosion; Or loss of function due to spring breaking; Or because the damping hole is blocked by dirt, the oil output by the pump immediately flows back to the oil tank through the overflow valve. Troubleshooting: disassemble the overflow valve and clean it. Check or replace the spring to restore its working performance.
            (2)溢流閥工作是否正常。若不正常,則可能是壓力油路中的某個閥有污物或其他原因卡住,處于回油位置,致使壓力油路與溢流回路短路,也可能是管接頭松脫,或處于壓力油路中的某些閥泄漏嚴重,或液壓缸、液壓馬達的密封損壞,嚴重泄漏。排除方法:拆開有關閥進行清洗,檢查密封間隙的大小及各種密封裝置,密封裝置損壞應更換。
            (2) Check whether the overflow valve works normally. If it is abnormal, it may be that a valve in the pressure oil circuit is stuck due to dirt or other reasons and is in the oil return position, resulting in a short circuit between the pressure oil circuit and the overflow circuit, or the pipe joint is loose, or some valves in the pressure oil circuit leak seriously, or the seals of the hydraulic cylinder and hydraulic motor are damaged and leak seriously. Troubleshooting: disassemble relevant valves for cleaning, check the size of sealing gap and various sealing devices, and replace the damaged sealing device.
            (3)若液壓泵輸出流量隨壓力升高而顯著減小,且壓力達不到規定值,則是由于液壓泵磨損后間隙增大所致。排除方法:測定液壓泵的容積效率,即可確定該泵是否能繼續使用,對磨損嚴重的零件,應進行修配或更換。
            (3) If the output flow of the hydraulic pump decreases significantly with the increase of pressure, and the pressure cannot reach the specified value, it is due to the increase of clearance after the hydraulic pump is worn. Troubleshooting: determine the volumetric efficiency of the hydraulic pump to determine whether the pump can continue to be used. Repair or replace the severely worn parts.
            (4)若整個全自動上料攪拌車液壓系統能建立正常壓力,而某些管路或液壓缸(或液壓馬達)中無壓力,則可能是由于管路、小孔或節流閥、換向閥等部位堵塞。此時,應逐段檢查壓力和有無油液通過,找出原因,加以排除。
            (4) If the hydraulic system of the whole automatic feeding mixer truck can establish normal pressure, but there is no pressure in some pipelines or hydraulic cylinders (or hydraulic motors), it may be due to the blockage of pipelines, small holes, throttle valves, directional valves, etc. At this time, check the pressure and oil passage section by section, find out the cause and eliminate it.
            以上就是全自動上料攪拌車http://www.aqtop.com為大家帶來的相關分享,感謝您的瀏覽,如想了解其他產品信息,歡迎登錄我們官網進行查看。
            The above is the full-automatic feeding mixer http://www.aqtop.com Thank you for your browsing. If you want to know other product information, please log in to our official website.
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