【作者】 李艳杰； 于安才； 姜继海；

【Author】 LI Yan-jie1,2 YU an-cai2 JIANG Ji-hai2 (1.School of Mechanical Engineering,Shenyang Ligong University,Shenyang 110159;2.School of Mechatronics Engineering,Harbin Institute of Technology,Harbin 150001)

【机构】 沈阳理工大学机械工程学院； 哈尔滨工业大学机电工程学院；

【摘要】 深入分析了现代液压挖掘机中三种主流的节能液压系统——负流量控制、正流量控制和负载敏感系统的基本工作原理,重点分析了它们在不同系列挖掘机中的应用;介绍了两种新型挖掘机液压系统的基本原理;分析表明三种典型挖掘节能液压系统都具有一定的节能效果,但工作原理各有不同;新型的挖掘机液压系统虽然还在研发阶段,但具有更好的节能效果及应用前景。更多还原

【Abstract】 Negative flow control,positive flow control and load sensing are the general energy-saving hydraulic systems of modern hydraulic excavator.The basic principles of the three typical hydraulic control systems were analyzed deeply.Their application in different kind of excavators is mainly analyzed.The principles of two new kinds of excavator hydraulic system were introduced.Analyses show,all of the three typical excavator hydraulic control system can realize energy saving,but their principles are different.The two new kinds of excavator hydraulic control system can realize better energy saving and their application prospect are better.更多还原