A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Multi-pump confluence electro-hydraulic system and excavator
According to the multi-pump confluence electro-hydraulic system and the excavator, a multi-pump system is adopted in the multi-pump confluence electro-hydraulic system, the maximum flow of the system is increased through confluence under the composite working condition, and the operation speed of an actuator is increased; characteristic matching is carried out on an operation end signal and the flow requirement of a controlled actuator, the influence of load sudden change on the speed regulation performance of an open center system is avoided, characteristic matching is carried out on an oil return pressure value in a multi-way valve, load pressure and a hydraulic assembly, output of the hydraulic assembly is reduced under the small-flow working condition, output of the hydraulic assembly is improved under the large-flow working condition, and the speed regulation performance of the open center system is improved. And a better energy-saving effect is achieved.
本发明提供了一种多泵合流电液系统及挖掘机，所述多泵合流电液系统通过采用多泵系统，在复合工况时通过合流来提高系统最大流量，提高执行器运行速率；将操作端信号与被控执行器流量需求进行特性匹配，解决负载突变对开中心系统调速性能的影响，将多路阀中回油压力值与负载压力及液压组件进行特性匹配，在小流量工况时降低液压组件的输出，在大流量工况时提高液压组件的输出，取得了较好的节能效果。
Multi-pump confluence electro-hydraulic system and excavator
According to the multi-pump confluence electro-hydraulic system and the excavator, a multi-pump system is adopted in the multi-pump confluence electro-hydraulic system, the maximum flow of the system is increased through confluence under the composite working condition, and the operation speed of an actuator is increased; characteristic matching is carried out on an operation end signal and the flow requirement of a controlled actuator, the influence of load sudden change on the speed regulation performance of an open center system is avoided, characteristic matching is carried out on an oil return pressure value in a multi-way valve, load pressure and a hydraulic assembly, output of the hydraulic assembly is reduced under the small-flow working condition, output of the hydraulic assembly is improved under the large-flow working condition, and the speed regulation performance of the open center system is improved. And a better energy-saving effect is achieved.
本发明提供了一种多泵合流电液系统及挖掘机，所述多泵合流电液系统通过采用多泵系统，在复合工况时通过合流来提高系统最大流量，提高执行器运行速率；将操作端信号与被控执行器流量需求进行特性匹配，解决负载突变对开中心系统调速性能的影响，将多路阀中回油压力值与负载压力及液压组件进行特性匹配，在小流量工况时降低液压组件的输出，在大流量工况时提高液压组件的输出，取得了较好的节能效果。
Multi-pump confluence electro-hydraulic system and excavator
一种多泵合流电液系统及挖掘机
ZHAO HENG (author) / LIN TIANLIANG (author) / LIN YUANZHENG (author) / MIAO CHENG (author) / ZHENG WEIJIE (author) / SHI JIARONG (author) / CHEN LONG (author) / CHEN QIHUAI (author) / FU SHENGJIE (author) / REN HAOLING (author)
2024-01-09
Patent
Electronic Resource
Chinese
IPC:
E02F
Baggern
,
DREDGING
Confluence oil source valve of external control pilot pump of excavator
| European Patent Office | 2024