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Positive flow hydraulic system of pure electric loader and pure electric loader
The invention discloses a positive flow hydraulic system of a pure electric loader and the pure electric loader. An oil outlet of a working pump is connected with an oil inlet P1 of a multi-way valve; an oil outlet of the steering pump is connected with an oil inlet P of the flow amplifying valve, and an oil outlet PF of the flow amplifying valve is connected with an oil inlet P2 of the multi-way valve; an oil outlet of the steering pump is connected with an oil inlet P of the pilot oil source valve, an oil outlet U of the pilot oil source valve is connected with an oil inlet P of the electric proportional pressure reducing valve, and output ports of the electric proportional pressure reducing valve are connected with corresponding pilot control ports of the multi-way valve. The electric control handle is connected with the controller, and the controller is connected with the electric proportional pressure reducing valve and the hydraulic motor. The controller is connected with an oil inlet P2 of the multi-way valve through the pressure sensor; the working pump and the steering pump are subjected to shunt control through the multi-way valve, and meanwhile, the controller is used for matching the rotating speed of the hydraulic motor according to a pilot control signal of the electric proportional pressure reducing valve and an input signal of the electric control handle. According to the multi-way valve, the working pump and the steering pump are subjected to flow dividing control through the two flow dividing valves in the multi-way valve, and the throttling loss of the whole machine in the operation process is greatly reduced in combination with matching of a pilot control signal and the rotating speed of the motor.
本发明公开一种纯电动装载机正流量液压系统及纯电动装载机，工作泵的出油口与多路阀的进油口P1相连；转向泵的出油口与流量放大阀的进油口P相连，流量放大阀的出油口PF与多路阀的进油口P2相连；转向泵的出油口与先导油源阀的进油口P相连，先导油源阀的出油口U与电比例减压阀的进油口P相连，电比例减压阀的各输出口分别与多路阀的对应先导控制口相连；电控手柄与控制器相连，控制器分别与电比例减压阀和液压电机相连；控制器通过压力传感器与多路阀的进油口P2相连；工作泵和转向泵通过多路阀进行分流控制，同时，控制器根据电比例减压阀的先导控制信号及电控手柄的输入信号对液压电机进行转速匹配。本发明实现了工作泵与转向泵分别由多路阀中的两个分流阀进行分流控制，并结合先导控制信号与电机转速的匹配，大幅降低了整机在作业过程中的节流损失。
Positive flow hydraulic system of pure electric loader and pure electric loader
The invention discloses a positive flow hydraulic system of a pure electric loader and the pure electric loader. An oil outlet of a working pump is connected with an oil inlet P1 of a multi-way valve; an oil outlet of the steering pump is connected with an oil inlet P of the flow amplifying valve, and an oil outlet PF of the flow amplifying valve is connected with an oil inlet P2 of the multi-way valve; an oil outlet of the steering pump is connected with an oil inlet P of the pilot oil source valve, an oil outlet U of the pilot oil source valve is connected with an oil inlet P of the electric proportional pressure reducing valve, and output ports of the electric proportional pressure reducing valve are connected with corresponding pilot control ports of the multi-way valve. The electric control handle is connected with the controller, and the controller is connected with the electric proportional pressure reducing valve and the hydraulic motor. The controller is connected with an oil inlet P2 of the multi-way valve through the pressure sensor; the working pump and the steering pump are subjected to shunt control through the multi-way valve, and meanwhile, the controller is used for matching the rotating speed of the hydraulic motor according to a pilot control signal of the electric proportional pressure reducing valve and an input signal of the electric control handle. According to the multi-way valve, the working pump and the steering pump are subjected to flow dividing control through the two flow dividing valves in the multi-way valve, and the throttling loss of the whole machine in the operation process is greatly reduced in combination with matching of a pilot control signal and the rotating speed of the motor.
本发明公开一种纯电动装载机正流量液压系统及纯电动装载机，工作泵的出油口与多路阀的进油口P1相连；转向泵的出油口与流量放大阀的进油口P相连，流量放大阀的出油口PF与多路阀的进油口P2相连；转向泵的出油口与先导油源阀的进油口P相连，先导油源阀的出油口U与电比例减压阀的进油口P相连，电比例减压阀的各输出口分别与多路阀的对应先导控制口相连；电控手柄与控制器相连，控制器分别与电比例减压阀和液压电机相连；控制器通过压力传感器与多路阀的进油口P2相连；工作泵和转向泵通过多路阀进行分流控制，同时，控制器根据电比例减压阀的先导控制信号及电控手柄的输入信号对液压电机进行转速匹配。本发明实现了工作泵与转向泵分别由多路阀中的两个分流阀进行分流控制，并结合先导控制信号与电机转速的匹配，大幅降低了整机在作业过程中的节流损失。
Positive flow hydraulic system of pure electric loader and pure electric loader
一种纯电动装载机正流量液压系统及纯电动装载机
JIANG LIQIAO (author) / SUN ZHIYUAN (author) / ZHANG ANMIN (author) / MA PENGPENG (author) / ZHANG JINGXIAN (author) / QIAO ZHANZHAN (author) / FAN XIAOTONG (author)
2024-07-26
Patent
Electronic Resource
Chinese
IPC:
E02F
Baggern
,
DREDGING
Driving system of pure electric high-speed loader and high-speed loader
| European Patent Office | 2024