A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Fixed and variable hydraulic system of loading machine and loading machine
The invention relates to the technical field of loaders, in particular to a loader constant-volume and variable-volume hydraulic system and a loader.The constant-volume and variable-volume hydraulic system comprises a variable steering pump, a quantitative working pump, a priority valve, a distribution valve and a controller; an oil outlet of the metering pump is communicated with an oil inlet of the first main control valve; an oil outlet of the variable steering pump is communicated with an oil inlet of the steering gear and an oil inlet of the priority valve, a CF oil outlet of the priority valve is communicated with an oil inlet of the flow amplification valve, and an EF oil outlet of the priority valve is communicated with an oil inlet of the second main control valve. And the oil outlet of the quantitative working pump and the oil outlet of the variable steering pump can be shunted or converged through the shunting and converging slide valve. According to the constant and variable hydraulic system provided by the invention, the first main control valve and the second main control valve can realize composite action, so that the working flexibility of the working device is improved.
本发明涉及装载机技术领域，尤其涉及一种装载机定变量液压系统及装载机，定变量液压系统包括变量转向泵、定量工作泵、优先阀、分配阀以及控制器；定量泵的出油口与第一主控阀的进油口连通；变量转向泵的出油口与转向器的进油口以及优先阀的进油口连通，优先阀的CF出油口与流量放大阀的进油口连通，优先阀的EF出油口与第二主控阀的进油口连通，定量工作泵的出油口与变量转向泵的出油口还能够通过分合流滑阀分流或合流。本发明提供的定变量液压系统，使得第一主控阀和第二主控阀能够实现复合动作，增加了工作装置工作的灵活性。
Fixed and variable hydraulic system of loading machine and loading machine
The invention relates to the technical field of loaders, in particular to a loader constant-volume and variable-volume hydraulic system and a loader.The constant-volume and variable-volume hydraulic system comprises a variable steering pump, a quantitative working pump, a priority valve, a distribution valve and a controller; an oil outlet of the metering pump is communicated with an oil inlet of the first main control valve; an oil outlet of the variable steering pump is communicated with an oil inlet of the steering gear and an oil inlet of the priority valve, a CF oil outlet of the priority valve is communicated with an oil inlet of the flow amplification valve, and an EF oil outlet of the priority valve is communicated with an oil inlet of the second main control valve. And the oil outlet of the quantitative working pump and the oil outlet of the variable steering pump can be shunted or converged through the shunting and converging slide valve. According to the constant and variable hydraulic system provided by the invention, the first main control valve and the second main control valve can realize composite action, so that the working flexibility of the working device is improved.
本发明涉及装载机技术领域，尤其涉及一种装载机定变量液压系统及装载机，定变量液压系统包括变量转向泵、定量工作泵、优先阀、分配阀以及控制器；定量泵的出油口与第一主控阀的进油口连通；变量转向泵的出油口与转向器的进油口以及优先阀的进油口连通，优先阀的CF出油口与流量放大阀的进油口连通，优先阀的EF出油口与第二主控阀的进油口连通，定量工作泵的出油口与变量转向泵的出油口还能够通过分合流滑阀分流或合流。本发明提供的定变量液压系统，使得第一主控阀和第二主控阀能够实现复合动作，增加了工作装置工作的灵活性。
Fixed and variable hydraulic system of loading machine and loading machine
一种装载机定变量液压系统及装载机
DING WEI (author) / WANG YIQIAN (author) / GAO MINGQIAN (author) / WANG YUN (author) / WU ZONGCAI (author) / LI ZEHUA (author) / HAN HAO (author)
2022-06-24
Patent
Electronic Resource
Chinese
IPC:
E02F
Baggern
,
DREDGING
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