The invention relates to the technical field of engineering machinery, and discloses a hydraulic driving system and engineering machine.The hydraulic driving system is characterized in that a first valve body communicates with a first variable pumping assembly through a first main pipeline, and the first valve body communicates with a supporting leg oil supply pipeline and an auxiliary steering oil supply pipeline; at the first working position, the first valve body communicates with the first main pipeline and the supporting leg oil supply pipeline, and at the second working position, the first valve body communicates with the first main pipeline and the auxiliary steering oil supply pipeline; one end of the first control assembly communicates with the first main pipeline, the other end of the first control assembly communicates with a loading oil supply pipeline, and the first variable pumping assembly selectively communicates with the first valve body or the loading oil supply pipeline through the first control assembly. The lower vehicle and the upper vehicle share the first variable pumping assembly, so that the arrangement of one set of pumping assembly is reduced, the overall structure of the hydraulic driving system is simplified, the system cost is effectively controlled, the occupied space on the vehicle body is reduced, and the space utilization rate of engineering machinery is improved.
本发明涉及工程机械技术领域,公开了液压驱动系统及工程机械,包括:第一阀体通过第一总管路与第一变量泵送组件连通设置,第一阀体连通设置有支腿供油管路和辅助转向供油管路,在第一工作位置,第一阀体连通第一总管路和支腿供油管路,在第二工作位置,第一阀体连通第一总管路和辅助转向供油管路;第一控制组件的一端与第一总管路连通,第一控制组件的另一端连通有上车供油管路,第一变量泵送组件通过第一控制组件可选择地连通第一阀体或者是上车供油管路。本发明下车和上车共用第一变量泵送组件,从而减少了一套泵送组件的设置,简化液压驱动系统的整体结构,有效控制系统成本,减少车体上的空间占用,提高工程机械的空间利用率。
Hydraulic driving system and engineering machinery
液压驱动系统及工程机械
07.02.2025
Patent
Elektronische Ressource
Chinesisch
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