中文摘要：

在设计目前国内最大（斗容量为15 m3,质量260 t）的正铲挖掘机中,提出采用泵阀复合流量匹配的电液比例控制方法实现水平推压。通过计算机协调的比值关系确定平推中供给各液压缸的流量,采用ADAMS和AMESim软件,对设计的矿用挖掘机水平推压过程进行机械系统动力学与液压系统的联合仿真研究。在小型挖掘机上对斗杆挖掘过程各个液压缸的位移、速度和压力进行测试试验验证,结果表明联合仿真研究能够较准确地模拟挖掘机的真实工作环境。

英文摘要：

The method of electro-hydraulic proportional controlling means matched by pump valve compound flow rate was proposed to achieve flat-pushing while designing the national largest face-shovel hydraulic excavator with the bucket capacity of 15 m3 and machine weigh of 260 t.The ratio of hydraulic cylinders＇ flow rate was ascertained by computer coordinate control during the flat-pushing process,the co-simulation research of dynamics of mechanical systems and hydraulic system in developing mining excavators＇ flat-pushing process was carried out by using the software of ADAMS and AMESim.The displacement,velocity and pressure of arm mining process in various hydraulic cylinder on the small excavator were validated by the experiment.It is confirmed that co-simulation research methods can accurately simulate the practical working environment of excavator.