The invention relates to the technical field of engineering vehicles, and provides a closed pump hydraulic driving system and an engineering vehicle, the closed pump hydraulic driving system comprises a driving main valve, two motor sets and a plurality of closed pumps, each motor set comprises a plurality of motors connected in parallel, the driving main valve is provided with a plurality of first valve ports, a plurality of second valve ports, a plurality of third valve ports and a plurality of fourth valve ports, first oil ports of the multiple closed pumps communicate with the multiple first valve ports correspondingly, second oil ports of the multiple closed pumps communicate with the multiple second valve ports correspondingly, first working ports of the multiple motors communicate with the multiple third valve ports correspondingly, and second working ports of the multiple motors communicate with the multiple fourth valve ports correspondingly. The multiple third valve ports communicate with the interior of the driving main valve, and the multiple fourth valve ports communicate with the interior of the driving main valve. In this way, oil output by the closed pumps converges in the driving main valve and then is supplied to all the motors, so that the flow of all the wheels can be accurately distributed according to needs, and normal running and self-adaptive differential steering of the vehicle are guaranteed.
本发明涉及工程车辆技术领域,并提供了一种闭式泵液压驱动系统及工程车辆,闭式泵液压驱动系统包括驱动主阀、两个马达组和多个闭式泵,马达组包括多个并联的马达,驱动主阀设有多个第一阀口、第二阀口、第三阀口和第四阀口,多个闭式泵的第一油口分别与多个第一阀口连通,多个闭式泵的第二油口分别与多个第二阀口连通,多个马达的第一工作口分别与多个第三阀口连通,多个马达的第二工作口分别与多个第四阀口连通,且多个第三阀口在驱动主阀的内部连通,多个第四阀口在驱动主阀的内部连通。这样,多个闭式泵输出的油液在驱动主阀内合流后分别供给各个马达,使得各个车轮的流量能够精准地实现按需分配,保证车辆的正常行驶和自适应差速转向。
Closed pump hydraulic driving system and engineering vehicle
一种闭式泵液压驱动系统及工程车辆
05.12.2023
Patent
Elektronische Ressource
Chinesisch
Hydraulic auxiliary driving system and engineering machine vehicle
Europäisches Patentamt | 2016
|Double Pump - Closed Center Ford Tractor Hydraulic System
Kraftfahrwesen | 1982
|EHA closed hydraulic system and pump valve integrated device
Europäisches Patentamt | 2023
|