该文主要针对DQL型斗轮堆取料机俯仰机构在工作运行中存在的缺陷和不足,对其液压系统进行了优化改造,采用M型中位机能的三位四通电液换向阀进行换向及卸荷,降低了系统的温度和能耗;通过在回油路中增加一组单向调速阀,可以方便控制进、回油路的流量,实现堆取料机俯仰机构上升、下降的无级调速,达到悬臂在进行俯仰动作时平稳可靠的目的。 This paper mainly aims at the defects and shortcomings of the DQL bucket wheel stacker reclaimer pitching mechanism in its working operation, and optimizes and rebuilds its hydraulic system. The three-position, four-way electro-hydraulic directional control valve To the unloading and reduce the temperature and energy consumption of the system; by adding a set of one-way speed control valve in the return line, you can easily control the flow into the inlet and outlet to achieve the reactor body elevation mechanism elevation, down Stepless speed regulation, to achieve a smooth and reliable cantilever in the pitch action.