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A platform for research: civil engineering, architecture and urbanism
Hydraulic controlled pilot valve and bulldozer
The invention relates to the technical field of hydraulic valves, and particularly discloses a hydraulic controlled pilot valve and a bulldozer. The hydraulic controlled pilot valve comprises a valveseat, a first valve element, a second valve element, a first spring, a second spring and an operating lever assembly, wherein the operating lever assembly is rotationally connected with the valve seat, and the first valve element and the second valve element are slidably arranged on the valve seat. When the operating lever assembly is located at the middle position, the first valve element is driven by the first spring and hydraulic oil and the second valve element is driven by the second spring and the hydraulic oil to act on the two ends of the operating lever assembly correspondingly, and the positions of the operating lever assembly and the valve seat are kept stable; and when the operating lever assembly is located at the left position, the first valve element is driven by the first spring and the second valve element is driven by the second spring and the hydraulic oil to act on the two ends of the operating lever assembly correspondingly, and the positions of the operating leverassembly and the valve seat are kept stable so that the position keeping of the operating lever assembly can be realized, the structure is simple, the cost is low, and an electromagnetic attraction position keeping structure and a mechanical friction position keeping structure do not need to be adopted.
本发明涉及液压阀技术领域，具体公开了一种液控先导阀及推土机，该液控先导阀包括阀座、第一阀芯、第二阀芯、第一弹簧、第二弹簧和操纵杆组件，操纵杆组件与阀座转动连接，第一阀芯和第二阀芯均滑动地设置于阀座，当操纵杆组件位于中位时，第一阀芯在第一弹簧和液压油的驱动下、第二阀芯在第二弹簧和液压油的驱动下分别作用于操纵杆组件的两端，且操纵杆组件与阀座的位置保持稳定；当操纵杆组件位于左位时，第一阀芯在第一弹簧的驱动下，第二阀芯在第二弹簧和液压油的驱动下分别作用于操纵杆组件两端，且操纵杆组件与阀座的位置保持稳定，能够实现对操纵杆组件的卡位，结构简单，成本较低，无需采用电磁吸合卡位结构和机械摩擦卡位结构。
Hydraulic controlled pilot valve and bulldozer
The invention relates to the technical field of hydraulic valves, and particularly discloses a hydraulic controlled pilot valve and a bulldozer. The hydraulic controlled pilot valve comprises a valveseat, a first valve element, a second valve element, a first spring, a second spring and an operating lever assembly, wherein the operating lever assembly is rotationally connected with the valve seat, and the first valve element and the second valve element are slidably arranged on the valve seat. When the operating lever assembly is located at the middle position, the first valve element is driven by the first spring and hydraulic oil and the second valve element is driven by the second spring and the hydraulic oil to act on the two ends of the operating lever assembly correspondingly, and the positions of the operating lever assembly and the valve seat are kept stable; and when the operating lever assembly is located at the left position, the first valve element is driven by the first spring and the second valve element is driven by the second spring and the hydraulic oil to act on the two ends of the operating lever assembly correspondingly, and the positions of the operating leverassembly and the valve seat are kept stable so that the position keeping of the operating lever assembly can be realized, the structure is simple, the cost is low, and an electromagnetic attraction position keeping structure and a mechanical friction position keeping structure do not need to be adopted.
本发明涉及液压阀技术领域，具体公开了一种液控先导阀及推土机，该液控先导阀包括阀座、第一阀芯、第二阀芯、第一弹簧、第二弹簧和操纵杆组件，操纵杆组件与阀座转动连接，第一阀芯和第二阀芯均滑动地设置于阀座，当操纵杆组件位于中位时，第一阀芯在第一弹簧和液压油的驱动下、第二阀芯在第二弹簧和液压油的驱动下分别作用于操纵杆组件的两端，且操纵杆组件与阀座的位置保持稳定；当操纵杆组件位于左位时，第一阀芯在第一弹簧的驱动下，第二阀芯在第二弹簧和液压油的驱动下分别作用于操纵杆组件两端，且操纵杆组件与阀座的位置保持稳定，能够实现对操纵杆组件的卡位，结构简单，成本较低，无需采用电磁吸合卡位结构和机械摩擦卡位结构。
Hydraulic controlled pilot valve and bulldozer
一种液控先导阀及推土机
JIANG YOUSHAN (author) / LIU QIANQIAN (author) / ZHU GENGYIN (author) / ZHAO JIANJUN (author) / JIN KE (author) / HAN FENG (author)
2020-04-24
Patent
Electronic Resource
Chinese
| European Patent Office | 2015