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Engineering machinery hydraulic system, hydraulic system control method and engineering machinery
The invention belongs to the technical field of engineering machinery, and discloses an engineering machinery hydraulic system, a hydraulic system control method and engineering machinery, in the engineering machinery hydraulic system, a rotary motor is not powered by a hydraulic pump any more, but is powered by a first variable pump and a second variable pump, the first variable pump can only provide power for the rotary motor, and the second variable pump can only provide power for the rotary motor. The second variable pump can supply power to the rotary motor or supply power to working equipment of the engineering machinery according to actual conditions, so that pressure required by rotation and other actions can be balanced, and the situation that the pressure difference required by rotation and a movable arm is large, consequently, the pressure loss is large, and the service life of the engineering machinery is prolonged is avoided. And the rotary action has advantages in flow distribution, and the speed of the movable arm is influenced during the composite action.
本发明属于工程机械技术领域，公开了工程机械液压系统、液压系统控制方法及工程机械，工程机械液压系统中，回转马达不再由液压泵提供动力，而是改为由第一变量泵与第二变量泵提供动力，其中，第一变量泵仅能够为回转马达提供动力，以保证回转马达的动力充足，第二变量泵能够根据实际情况为回转马达提供动力，或者为工程机械的工作设备提供动力，如此能够平衡回转以及其它动作所需的压力，避免回转以及动臂所需的压力差异较大，导致压力损失大，以及回转动作在流量分配中占据优势，复合动作时动臂的速度将会受到影响的问题。
Engineering machinery hydraulic system, hydraulic system control method and engineering machinery
The invention belongs to the technical field of engineering machinery, and discloses an engineering machinery hydraulic system, a hydraulic system control method and engineering machinery, in the engineering machinery hydraulic system, a rotary motor is not powered by a hydraulic pump any more, but is powered by a first variable pump and a second variable pump, the first variable pump can only provide power for the rotary motor, and the second variable pump can only provide power for the rotary motor. The second variable pump can supply power to the rotary motor or supply power to working equipment of the engineering machinery according to actual conditions, so that pressure required by rotation and other actions can be balanced, and the situation that the pressure difference required by rotation and a movable arm is large, consequently, the pressure loss is large, and the service life of the engineering machinery is prolonged is avoided. And the rotary action has advantages in flow distribution, and the speed of the movable arm is influenced during the composite action.
本发明属于工程机械技术领域，公开了工程机械液压系统、液压系统控制方法及工程机械，工程机械液压系统中，回转马达不再由液压泵提供动力，而是改为由第一变量泵与第二变量泵提供动力，其中，第一变量泵仅能够为回转马达提供动力，以保证回转马达的动力充足，第二变量泵能够根据实际情况为回转马达提供动力，或者为工程机械的工作设备提供动力，如此能够平衡回转以及其它动作所需的压力，避免回转以及动臂所需的压力差异较大，导致压力损失大，以及回转动作在流量分配中占据优势，复合动作时动臂的速度将会受到影响的问题。
Engineering machinery hydraulic system, hydraulic system control method and engineering machinery
工程机械液压系统、液压系统控制方法及工程机械
NIU ZHAO (author) / SHI SHAOLEI (author) / LIN YUECUN (author) / DONG LIDUI (author) / WANG SHIDONG (author) / SHI LEI (author)
2024-06-14
Patent
Electronic Resource
Chinese
IPC:
E02F
Baggern
,
DREDGING
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