Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Energy-saving hydraulic system and loader
The invention discloses an energy-saving hydraulic system and a loader. The hydraulic system comprises a hydraulic oil tank, a steering gear pump, a working gear pump assembly, a priority valve, a one-way unloading valve and the like. An EF port of the priority valve is connected with an oil inlet of the multi-way valve through the one-way unloading valve, when the working hydraulic system is in a high-pressure small-flow working condition or a high-pressure overflow working condition, redundant oil converged to the working hydraulic system by the steering hydraulic system can be unloaded through the one-way unloading valve, and energy loss and system heating caused by high-pressure overflow of the steering hydraulic system are avoided. A gear pump in the working gear pump assembly sucks oil from a hydraulic oil tank through a variable throttle valve, the oil returns to the hydraulic oil tank through a rotating speed sensing control valve and a low-pressure overflow valve when no load signal exists, and the gear pump does not provide flow for a multi-way valve any more, so that the energy loss of the system is greatly reduced; the lubricating oil absorption flow of the pump is automatically matched according to the rotating speed change of the working gear pump, the energy consumption is reduced, and the use reliability of the gear pump is ensured.
本发明公开了一种节能型液压系统及装载机，液压系统包括液压油箱、转向齿轮泵、工作齿轮泵总成、优先阀、单向卸荷阀等；优先阀EF口通过单向卸荷阀与多路阀进油口相连，在工作液压系统处于高压小流量工况或高压溢流工况时，转向液压系统合流至工作液压系统的多余油液可通过单向卸荷阀卸荷，避免了转向液压系统高压溢流造成的能量损失和系统发热；工作齿轮泵总成中的齿轮泵通过可变节流阀从液压油箱吸油，无负载信号时通过转速传感控制阀和低压溢流阀回液压油箱，齿轮泵不再向多路阀提供流量，从而大幅降低系统能量损失，并基于转速传感控制阀，实现根据工作齿轮泵的转速变化，自动匹配泵的润滑吸油流量，降低能耗，且保证了齿轮泵的使用可靠性。
Energy-saving hydraulic system and loader
The invention discloses an energy-saving hydraulic system and a loader. The hydraulic system comprises a hydraulic oil tank, a steering gear pump, a working gear pump assembly, a priority valve, a one-way unloading valve and the like. An EF port of the priority valve is connected with an oil inlet of the multi-way valve through the one-way unloading valve, when the working hydraulic system is in a high-pressure small-flow working condition or a high-pressure overflow working condition, redundant oil converged to the working hydraulic system by the steering hydraulic system can be unloaded through the one-way unloading valve, and energy loss and system heating caused by high-pressure overflow of the steering hydraulic system are avoided. A gear pump in the working gear pump assembly sucks oil from a hydraulic oil tank through a variable throttle valve, the oil returns to the hydraulic oil tank through a rotating speed sensing control valve and a low-pressure overflow valve when no load signal exists, and the gear pump does not provide flow for a multi-way valve any more, so that the energy loss of the system is greatly reduced; the lubricating oil absorption flow of the pump is automatically matched according to the rotating speed change of the working gear pump, the energy consumption is reduced, and the use reliability of the gear pump is ensured.
本发明公开了一种节能型液压系统及装载机，液压系统包括液压油箱、转向齿轮泵、工作齿轮泵总成、优先阀、单向卸荷阀等；优先阀EF口通过单向卸荷阀与多路阀进油口相连，在工作液压系统处于高压小流量工况或高压溢流工况时，转向液压系统合流至工作液压系统的多余油液可通过单向卸荷阀卸荷，避免了转向液压系统高压溢流造成的能量损失和系统发热；工作齿轮泵总成中的齿轮泵通过可变节流阀从液压油箱吸油，无负载信号时通过转速传感控制阀和低压溢流阀回液压油箱，齿轮泵不再向多路阀提供流量，从而大幅降低系统能量损失，并基于转速传感控制阀，实现根据工作齿轮泵的转速变化，自动匹配泵的润滑吸油流量，降低能耗，且保证了齿轮泵的使用可靠性。
Energy-saving hydraulic system and loader
一种节能型液压系统及装载机
FAN HONGQUAN (Autor:in) / LIU YA (Autor:in) / MA PENGPENG (Autor:in) / ZHANG ANMIN (Autor:in) / GUO FANGSHENG (Autor:in) / WEI JIANMIN (Autor:in) / ZHOU ZHONGLIANG (Autor:in)
23.06.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
E02F
Baggern
,
DREDGING
Loader stabilizing module, hydraulic system and loader
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