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某型挖掘机由于其采用的负载敏感(LS)控制系统设置不合理,造成作业动作迟缓,燃油消耗大,工作效率低。1.原因分析该型挖掘机的负载敏感控制系统原理如图1所示,其主要由工作装置控制阀1、LS管路2、主液压泵3、减压阀4、二位二通阀5、回转制动器6和回转马达7等组成。从工作装置控制阀1引出的负载敏感
Due to the load-sensitive (LS) control system adopted by a certain type of excavator is irrational, it causes slow operation, high fuel consumption and low work efficiency. 1. Analysis of the reasons for this type of excavator load-sensing control system shown in Figure 1, which mainly consists of work device control valve 1, LS pipe 2, the main hydraulic pump 3, the pressure reducing valve 4, two two-way valve 5 , Rotary brake 6 and rotary motor 7 and other components. The load drawn from work machine control valve 1 is sensitive