A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Excavator hydraulic system and excavator
The invention relates to the technical field of engineering vehicles, in particular to an excavator hydraulic system and an excavator. The excavator hydraulic system comprises a first main pump, a second main pump, a main valve, a converging valve block, a priority valve, a converging channel and a breaking hammer; the converging valve block is connected between the converging channel and the first main pump, the second main pump is connected with the converging channel and the main valve through the priority valve, and the converging channel is arranged outside the main valve and communicateswith the breaking hammer; in the crushing operation mode, the priority valve can perform flow distribution on the working oil supplied to the converging channel and the main valve by a second main valve; when the converging valve block is switched to a working state, the first main pump and the second main pump jointly supply oil to the breaking hammer through the converging channel; and when theconverging valve block is switched to a non-working state, the second main pump supplies oil to the breaking hammer independently through the converging channel. The excavator comprises the excavatorhydraulic system. According to the excavator hydraulic system and the excavator, the heating condition of the main valve is avoided, and the pressure loss and the heat loss are reduced.
本发明涉及工程车辆技术领域，尤其涉及一种挖掘机液压系统和挖掘机。该挖掘机液压系统包括第一主泵、第二主泵、主阀、合流阀块、优先阀、合流通路和破碎锤；合流阀块连接于合流通路与第一主泵之间，第二主泵通过优先阀分别与合流通路和主阀连接，合流通路设置于主阀的外部并与破碎锤连通；在破碎作业模式下，优先阀能够对第二主阀向合流通路和主阀供给的工作油进行流量分配；当合流阀块切换至工作状态，第一主泵和第二主泵通过合流通路共同向破碎锤供油；当合流阀块切换至非工作状态，第二主泵单独通过合流通路向破碎锤供油。该挖掘机包括该挖掘机液压系统。该挖掘机液压系统和该挖掘机，避免了主阀发热情况的发生，降低了压力损耗和热损耗。
Excavator hydraulic system and excavator
The invention relates to the technical field of engineering vehicles, in particular to an excavator hydraulic system and an excavator. The excavator hydraulic system comprises a first main pump, a second main pump, a main valve, a converging valve block, a priority valve, a converging channel and a breaking hammer; the converging valve block is connected between the converging channel and the first main pump, the second main pump is connected with the converging channel and the main valve through the priority valve, and the converging channel is arranged outside the main valve and communicateswith the breaking hammer; in the crushing operation mode, the priority valve can perform flow distribution on the working oil supplied to the converging channel and the main valve by a second main valve; when the converging valve block is switched to a working state, the first main pump and the second main pump jointly supply oil to the breaking hammer through the converging channel; and when theconverging valve block is switched to a non-working state, the second main pump supplies oil to the breaking hammer independently through the converging channel. The excavator comprises the excavatorhydraulic system. According to the excavator hydraulic system and the excavator, the heating condition of the main valve is avoided, and the pressure loss and the heat loss are reduced.
本发明涉及工程车辆技术领域，尤其涉及一种挖掘机液压系统和挖掘机。该挖掘机液压系统包括第一主泵、第二主泵、主阀、合流阀块、优先阀、合流通路和破碎锤；合流阀块连接于合流通路与第一主泵之间，第二主泵通过优先阀分别与合流通路和主阀连接，合流通路设置于主阀的外部并与破碎锤连通；在破碎作业模式下，优先阀能够对第二主阀向合流通路和主阀供给的工作油进行流量分配；当合流阀块切换至工作状态，第一主泵和第二主泵通过合流通路共同向破碎锤供油；当合流阀块切换至非工作状态，第二主泵单独通过合流通路向破碎锤供油。该挖掘机包括该挖掘机液压系统。该挖掘机液压系统和该挖掘机，避免了主阀发热情况的发生，降低了压力损耗和热损耗。
Excavator hydraulic system and excavator
挖掘机液压系统和挖掘机
CHI FENG (author) / DONG LIDUI (author) / MIAO GUOHUA (author) / ZHANG GUIXIAN (author) / YANG DIANZUO (author) / LIU SHUQIANG (author)
2021-01-08
Patent
Electronic Resource
Chinese
IPC:
E02F
Baggern
,
DREDGING
Excavator main valve, excavator hydraulic system and excavator
| European Patent Office | 2023
| European Patent Office | 2022