A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention relates to a hydraulic valve, and discloses a multi-way valve and an excavator. The multi-way valve comprises a first link (1), a plurality of working links arranged in sequence, a pilot oil way (100), an oil inlet way (101) for communicating the first link (1) with the working links, and an oil return way (102) for communicating the first link (1) with the working links, wherein each working link comprises a main valve core; the control end of each main valve core is provided with a proportional control valve connected with the pilot oil way (100); and priority oil channels are arranged in the main valve cores of part of the working links so that the flow distributed by the working links and the working links arranged in front of the working links can be increased. The multi-way valve has high flow distribution precision, a compensation valve does not need to be arranged, and the structure is simple.
本发明涉及液压阀，公开了一种多路阀及挖掘机，该多路阀包括首联(1)、多个顺序排布的工作联、先导油路(100)、连通所述首联(1)与各所述工作联的进油油路(101)以及连通所述首联(1)与各所述工作联的回油油路(102)，所述工作联包括主阀芯，所述主阀芯的控制端设有与所述先导油路(100)连接的比例控制阀，部分所述工作联的主阀芯内设有优先油道，以能够增加所述工作联及排布在其之前的所述工作联所分配的流量。本发明的多路阀具有较高的流量分配精度，无需设置补偿阀，结构较为简单。
The invention relates to a hydraulic valve, and discloses a multi-way valve and an excavator. The multi-way valve comprises a first link (1), a plurality of working links arranged in sequence, a pilot oil way (100), an oil inlet way (101) for communicating the first link (1) with the working links, and an oil return way (102) for communicating the first link (1) with the working links, wherein each working link comprises a main valve core; the control end of each main valve core is provided with a proportional control valve connected with the pilot oil way (100); and priority oil channels are arranged in the main valve cores of part of the working links so that the flow distributed by the working links and the working links arranged in front of the working links can be increased. The multi-way valve has high flow distribution precision, a compensation valve does not need to be arranged, and the structure is simple.
本发明涉及液压阀，公开了一种多路阀及挖掘机，该多路阀包括首联(1)、多个顺序排布的工作联、先导油路(100)、连通所述首联(1)与各所述工作联的进油油路(101)以及连通所述首联(1)与各所述工作联的回油油路(102)，所述工作联包括主阀芯，所述主阀芯的控制端设有与所述先导油路(100)连接的比例控制阀，部分所述工作联的主阀芯内设有优先油道，以能够增加所述工作联及排布在其之前的所述工作联所分配的流量。本发明的多路阀具有较高的流量分配精度，无需设置补偿阀，结构较为简单。
Excavator main valve, excavator hydraulic system and excavator
| European Patent Office | 2023