A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Fluid control unit and excavator
The invention relates to the technical field of engineering machinery, in particular to a fluid control unit and an excavator. The fluid control unit comprises a main pressure flow channel, a main backflow channel and at least one work control unit. The work control unit comprises a first control valve and a second control valve; a first flow opening of the first control valve communicates with the main pressure flow channel, a second flow opening of the first control valve communicates with a second flow opening of the second control valve, and the second flow opening of the first control valve is further used for being connected with a working load; a first flow opening of the second control valve communicates with the main backflow channel; and the first control valve can control connection and disconnection between the main pressure flow channel and the second flow opening of the first control valve, and the second control valve can control connection and disconnection between the second flow opening of the second control valve and the main backflow channel. The excavator comprises at least one working load and the fluid control unit, and the working load is connected with the second flow opening of the first control valve. The situation that the finished product rate of a main control valve is low can be avoided.
本发明涉及工程机械技术领域，尤其是涉及一种流体控制单元及挖掘机。该流体控制单元，其包括主压力流道、主回流通道及至少一个工作控制单元；工作控制单元包括第一控制阀和第二控制阀；第一控制阀的第一流口与主压力流道相连通，第一控制阀的第二流口与第二控制阀的第二流口相连通，且第一控制阀的第二流口还用于连接工作负载；第二控制阀的第一流口与主回流通道相连通；第一控制阀能够控制主压力流道与第一控制阀的第二流口之间的通断，第二控制阀能够控制第二控制阀的第二流口与主回流通道之间的通断。该挖掘机，其包括至少一个工作负载及流体控制单元，工作负载与第一控制阀的第二流口连接。本发明有利于避免主控阀成品率低的情况的发生。
Fluid control unit and excavator
The invention relates to the technical field of engineering machinery, in particular to a fluid control unit and an excavator. The fluid control unit comprises a main pressure flow channel, a main backflow channel and at least one work control unit. The work control unit comprises a first control valve and a second control valve; a first flow opening of the first control valve communicates with the main pressure flow channel, a second flow opening of the first control valve communicates with a second flow opening of the second control valve, and the second flow opening of the first control valve is further used for being connected with a working load; a first flow opening of the second control valve communicates with the main backflow channel; and the first control valve can control connection and disconnection between the main pressure flow channel and the second flow opening of the first control valve, and the second control valve can control connection and disconnection between the second flow opening of the second control valve and the main backflow channel. The excavator comprises at least one working load and the fluid control unit, and the working load is connected with the second flow opening of the first control valve. The situation that the finished product rate of a main control valve is low can be avoided.
本发明涉及工程机械技术领域，尤其是涉及一种流体控制单元及挖掘机。该流体控制单元，其包括主压力流道、主回流通道及至少一个工作控制单元；工作控制单元包括第一控制阀和第二控制阀；第一控制阀的第一流口与主压力流道相连通，第一控制阀的第二流口与第二控制阀的第二流口相连通，且第一控制阀的第二流口还用于连接工作负载；第二控制阀的第一流口与主回流通道相连通；第一控制阀能够控制主压力流道与第一控制阀的第二流口之间的通断，第二控制阀能够控制第二控制阀的第二流口与主回流通道之间的通断。该挖掘机，其包括至少一个工作负载及流体控制单元，工作负载与第一控制阀的第二流口连接。本发明有利于避免主控阀成品率低的情况的发生。
Fluid control unit and excavator
流体控制单元及挖掘机
LIU SHUQIANG (author) / MIAO GUOHUA (author) / LIU ZHEN (author) / LI QIANG (author) / REN HONGTAO (author) / FENG LIBO (author) / LIU WEI (author) / MA RUIPING (author)
2022-01-07
Patent
Electronic Resource
Chinese
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