论文部分内容阅读
根据挖掘机的工况和作业要求,合理地选配和组合各种液压元件,就能构成挖掘机的液压系统。在挖掘机的液压系统中,凡是发动机在一定转速下驱动的主油泵所发出的流量是一定值,则该系统即为定量系统;反之,若主油泵的流量可以通过调节系统来改变.则这种系统就是变量系统。在定量系统中,各执行元件在无溢流情况下是按泵能供给的固定流量工作的,泵的功率按固定流量和最大工作压力确定。
According to excavator working conditions and job requirements, reasonable selection and combination of a variety of hydraulic components, excavators can constitute the hydraulic system. In the hydraulic system of excavator, the flow of the main oil pump driven by the engine at a certain rotational speed is a certain value, then the system is the quantitative system; on the contrary, if the flow of the main oil pump can be changed by the regulating system, Seed system is the variable system. In the quantitative system, the implementation of the components in the case of no overflow pump can supply a fixed flow of work, the pump power at a fixed flow and maximum working pressure to determine.