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前面几讲我们分析了液压传动中各种液压元件(包括动力装置—油泵;控制元件—压力、流量和方向控制阀等;执行机构—油缸或液压马达等)的工作原理、结构特点、基本参数和应用范围。要实现液压传动,除了正确地选用上述液压元件外,还必须了解和研究这些元件的组合方式,即液压系统,才能满足机器的传动要求,达到运转可靠、经济合理、使用方便。在本讲里,我们将以工程机械中典型的液压系统—全液压挖掘机的液压系统为例介绍一
In the previous sections, we analyzed the working principle, structural characteristics and basic parameters of various hydraulic components (including power plant - oil pump; control components - pressure, flow and directional control valves, etc.); hydraulic actuators And the scope of application. To achieve hydraulic transmission, in addition to the correct selection of the above hydraulic components, but also must understand and study the combination of these components, that is, hydraulic system to meet the requirements of the transmission drive to achieve reliable operation, economical and reasonable, easy to use. In this talk, we will take a typical hydraulic system in construction machinery - full hydraulic excavator hydraulic system as an example to introduce a