CAJ | 학술논문

介绍我国挖掘机液压系统的基本情况；针对其行走液压系统换向阀大都依赖进口且价格昂贵的问题，提出一种换向阀的电控化改造方案和两种应用方案。改造后的换向阀可替代高压、大流量进口换向阀，提高国内主机厂的利润。
개소아국알굴궤액압계통적기본정황；침대기행주액압계통환향벌대도의뢰진구차개격앙귀적문제，제출일충환향벌적전공화개조방안화량충응용방안。개조후적환향벌가체대고압、대류량진구환향벌，제고국내주궤엄적리윤。
The basic situation of domestic excavator hydraulic system was introduced. The majorities of directional control valves for walking hydraulic system were expensive,and depended on imports. To solve the problem,an electrical control improvement scheme for directional control valves and two application projects were put forward. The improved valve can substitute high pressure and large flow imported valve,so the profit of the domestic manufacturer is increased.