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１液压挖掘机的结构特点目前 ,在施工中使用的挖掘机多数为斗容１ｍ３左右的单斗液压挖掘机 ,它们多数采用双泵双回路全功率变量液压系统 ,其液压系统框图如图１所示 ,所有的工作机构被分成两组 ,由操纵阀１、２分别控制 ,前泵、后泵分别作为操纵阀１、２的动力来源 ,向它们提
A hydraulic excavator structural characteristics At present, most of the excavators used in construction bucket capacity of about 1m3 single-bucket hydraulic excavator, most of them with double-pump dual-loop full power variable hydraulic system, the hydraulic system block diagram shown in Figure 1 Show, all the working institutions are divided into two groups, respectively, by the control valve 1, 2, respectively, before the pump, after the pump as a control valve 1, 2 power source, to their mention