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液压阀的控制油方式大致分为内、外供油和内、外排油。控制油的来源在某些系统中采用与主系统共用或共排,在某些系统中则采用单供、单排。控制油似乎只对系统中液压阀实施控制,对主系统压力或执行元件工况关系甚微。然而系统也会因控制油处理不当出现故障,引起故障的原因往往被人们忽视,尤其是一些初接触者,只注重主液压系统分析,使问题最终得不到解决。 如右图实例所示,系统中两电液换向阀不同时动作,油缸2
Hydraulic control valve oil can be divided into internal and external fuel supply and internal and external drainage. The source of control oil is shared or co-arranged with the main system in some systems and single-supply, single-row in some systems. The control oil appears to control only the hydraulic valves in the system and has little to do with the pressure in the main system or the operating conditions of the actuator. However, the system may also fail due to improper handling of the control oil. The cause of the malfunction is often neglected. In particular, some initial contacts only pay attention to the analysis of the main hydraulic system so that the problem can not be solved finally. As shown in the example on the right, the two electrohydraulic reversing valves in the system do not operate simultaneously, cylinder 2