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加长臂挖掘机拦阻料理要领!

日期:2019-01-10   源头:http://www.degradedijital.com/
斗杆缸伸缩痴顽有力
  The bucket rod telescopic cylinder slow and weak
  当长臂挖掘机在作业进程中出现斗杆缸伸缩痴顽有力时,南方双彩网应当做如下查抄。
  When the long arm of the excavator during the operation of the bucket rod cylinder expansion appears slow and weak, we should check the following.
  1.查察其密封件可否失效。先松开高压腔的油管,放失腔内液压油,然后启动倡议机给高压腔内注入压力油,未见液压油从高压腔的油管中流出,标明斗杆缸活塞密封件密封精良。若密封件失效则会构成高压腔与高压腔的液压油因内泄而互窜。
  1. see the seal failure. Loosen the tubing pressure chamber, put the oil inside, and then start the engine oil injection pressure to the high pressure chamber, no hydraulic oil flowing from the low-pressure chamber tubing in that bucket rod cylinder piston seal good. If the hydraulic oil seal failure will result in the low pressure chamber and the high-pressure chamber due to internal leakage and channeling.
  2.查察安全吸油阀可否正常。安全吸油阀是1个双向掩护阀,陈设在液压缸和液压马达等实行元件上,当液压缸或马达的某一腔孕育发生瞬时高压时,高压腔的高压油就会翻开安全吸油阀中的溢流阀举行溢流,同时负压腔安全吸油阀的单向阀翻开,从油箱吸油来补充负压,起到掩护油路作用。
  2. see the safety of suction valve is normal. Safety is a two-way suction valve 1 protection valve installed in the hydraulic cylinder and a hydraulic motor actuator, when the hydraulic cylinder or motor of a cavity to produce instantaneous high voltage, high pressure oil will overflow the high pressure chamber safety relief valve suction valve in the open at the same time, the negative pressure cavity suction one-way valve oil safety valve open to supplement, negative pressure suction from the tank, play a protective role of oil.
加长臂挖掘机租赁
  由于斗杆缸变乱回路上装有2个安全吸油阀,若此中某个安全吸油阀的单向阀失效变成双向直通,约莫在溢流阀溢流压力很低时,都市构成该侧油腔的油压不克不及创立,压力油直接颠末单向阀或溢流阀泄入油箱,使斗杆缸方法痴顽有力致使不克不及变乱。若安全吸油阀存在此拦阻则应用手柄处于中立位置停机后,斗杆缸会自动痴顽回落;反之若无此征象则可扫除安全吸油阀拦阻。
  The 2 safety suction valve equipped with bucket rod cylinder loop, if the one-way valve a safety valve oil failure into a two-way through, or in the overflow of the overflow valve pressure is very low, will cause the oil chamber of the hydraulic side can not be established, the pressure oil directly through the one-way valve or overflow relief valve into the tank the bucket rod cylinder, slow weak or unable to work. If the suction valve exists for the fault of operating lever is in neutral position after the shutdown, the bucket rod cylinder will automatically slow down; if no such phenomenon can eliminate safety suction valve fault.
  3.查抄PPC阀和主控制阀。PPC阀又称先导运用阀,是一种比例压力控制阀,可依据应用手柄行程的大小输入相应的控制压力及流量,使主控制阀芯存在相应的移动量,从而起到控制实行元件速率的作用。主控制阀中每一根阀芯控制一支油路的通断,若此中某一阀芯磨损、卡滞致使窒息,就会飞扬相应实行元件的油压和流量,构成实行元件方法痴顽致使无方法。
  3. PPC check valve and main control valve. PPC valve as the pilot control valve, a proportional pressure control valve, according to the size of the operating handle stroke output pressure and flow control accordingly, the main control valve has corresponding amount of movement, so as to control the speed of the actuator. The main control valve in each valve to control a circuit switching, if one valve wear, stagnation or even blocked, it will reduce the corresponding actuator pressure and the flow, causing the actuator action slow or even no action.
  将斗杆缸回路的控制油管变卦到变乱正常的PPC阀上试机,则该拦阻流失。
  The control circuit of the bucket rod cylinder tubing replacement to PPC valve working on the test machine, the fault disappears.

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