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A platform for research: civil engineering, architecture and urbanism
Hydraulic system for hydrostatic loading machine, vehicle speed control method and gear shifting method
The invention discloses a hydraulic system for a hydrostatic loader, a vehicle speed control method and a gear shifting method. The hydraulic system comprises a walking hydraulic system, a working hydraulic system and a controller. The walking hydraulic system comprises tires, an engine, a walking pump, a first walking motor, an electro-hydraulic proportional directional valve, a second walking motor, a gearbox and an accelerator pedal; the working hydraulic system comprises a steering oil cylinder, a bucket oil cylinder, a movable arm oil cylinder, a working pump, a steering wheel and a control handle; the controller is used for collecting pump opening pressure information of the walking pump and the working pump, stroke information of an accelerator pedal, gear information of a gearbox, rotating speed information of a steering wheel and angle information of a control handle. The rotating speed of the engine, the displacement of the first travel motor and the second travel motor, the displacement of the travel pump and the working pump, the opening degree of the electro-hydraulic proportional reversing valve and the disengagement and engagement of the clutch end of the gearbox are controlled; the loader speed control and high-speed gear shifting functions can be achieved.
本发明公开了一种用于静液压装载机的液压系统、车速控制方法和换挡方法，液压系统包括行走液压系统、工作液压系统以及控制器；行走液压系统包括轮胎、发动机、行走泵、第一行走马达、电液比例换向阀、第二行走马达、变速箱、油门踏板；工作液压系统包括转向油缸、铲斗油缸、动臂油缸、工作泵、方向盘、操纵手柄；控制器用于采集行走泵和工作泵泵口压力信息、油门踏板的行程信息、变速箱的档位信息、方向盘的转速信息、操纵手柄的角度信息，并控制发动机的转速、第一行走马达和第二行走马达的排量、行走泵和工作泵的排量、电液比例换向阀的开度、变速箱离合端的脱合；本发明能够实现装载机车速的控制和高速换挡功能。
Hydraulic system for hydrostatic loading machine, vehicle speed control method and gear shifting method
The invention discloses a hydraulic system for a hydrostatic loader, a vehicle speed control method and a gear shifting method. The hydraulic system comprises a walking hydraulic system, a working hydraulic system and a controller. The walking hydraulic system comprises tires, an engine, a walking pump, a first walking motor, an electro-hydraulic proportional directional valve, a second walking motor, a gearbox and an accelerator pedal; the working hydraulic system comprises a steering oil cylinder, a bucket oil cylinder, a movable arm oil cylinder, a working pump, a steering wheel and a control handle; the controller is used for collecting pump opening pressure information of the walking pump and the working pump, stroke information of an accelerator pedal, gear information of a gearbox, rotating speed information of a steering wheel and angle information of a control handle. The rotating speed of the engine, the displacement of the first travel motor and the second travel motor, the displacement of the travel pump and the working pump, the opening degree of the electro-hydraulic proportional reversing valve and the disengagement and engagement of the clutch end of the gearbox are controlled; the loader speed control and high-speed gear shifting functions can be achieved.
本发明公开了一种用于静液压装载机的液压系统、车速控制方法和换挡方法，液压系统包括行走液压系统、工作液压系统以及控制器；行走液压系统包括轮胎、发动机、行走泵、第一行走马达、电液比例换向阀、第二行走马达、变速箱、油门踏板；工作液压系统包括转向油缸、铲斗油缸、动臂油缸、工作泵、方向盘、操纵手柄；控制器用于采集行走泵和工作泵泵口压力信息、油门踏板的行程信息、变速箱的档位信息、方向盘的转速信息、操纵手柄的角度信息，并控制发动机的转速、第一行走马达和第二行走马达的排量、行走泵和工作泵的排量、电液比例换向阀的开度、变速箱离合端的脱合；本发明能够实现装载机车速的控制和高速换挡功能。
Hydraulic system for hydrostatic loading machine, vehicle speed control method and gear shifting method
用于静液压装载机的液压系统、车速控制方法和换挡方法
SONG JIA (author) / ZHANG ANMIN (author) / QIAO ZHANZHAN (author) / SUN ZHIYUAN (author)
2023-09-12
Patent
Electronic Resource
Chinese
IPC:
E02F
Baggern
,
DREDGING
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