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    • 1. 发明申请
    • MULTI-WAY VALVE, HYDRAULIC DEVICE AND CONCRETE PUMP VEHICLE
    • 多路阀,液压装置和混凝土泵车
    • US20120224983A1
    • 2012-09-06
    • US13508954
    • 2010-11-04
    • Xiaogang YiYongdong LiuYanghui Xiang
    • Xiaogang YiYongdong LiuYanghui Xiang
    • F15B15/18E04G21/04F15B13/02
    • F15B11/161F15B2211/20538F15B2211/20546F15B2211/3138F15B2211/413F15B2211/41509F15B2211/426F15B2211/455F15B2211/6052F15B2211/6054F15B2211/71Y10T137/87885
    • A multi-way valve includes a plurality of parallel combination valves for controlling corresponding actuators (4-1-4-5). Each combination valve comprises proportional throttle valves (2-1-2-5) and reversing valves (3-1-3-5). An oil inlet of the proportional throttle valve is communicated with a main oil inlet (P), and an oil outlet of the proportional throttle valve is communicated with an oil inlet of the reversing valve. An oil outlet of the reversing valve is communicated with the main oil return port (T). Wherein, each combination valve further comprises a one-way control valve (9-1-9-5, 10-1-10-5) for obtaining the load pressure of corresponding actuator. One side of the one-way control valve is communicated with a pipeline between the proportional throttle valve and the actuator. The multi-way valve further includes a control element (8) which receives the load pressure fed back by each one-way control valve and responds to the load pressure to control the supply of hydraulic oil for the actuators. The multi-way valve has the load-sensitive function, thereby reducing energy loss and system heat productivity. A hydraulic equipment and a concrete pump vehicle corresponding to the multi-way valve are also provided.
    • 多路阀包括用于控制相应的致动器的多个并联组合阀(4-1-4-5)。 每个组合阀包括比例节流阀(2-1-2-5)和换向阀(3-1-3-5)。 比例节流阀的进油口与主油入口(P)连通,比例节流阀的出油口与换向阀的进油口连通。 换向阀的出油口与主回油口(T)连通。 其中,每个组合阀还包括用于获得相应致动器的负载压力的单向控制阀(9-1-9-5,10-1-10-5)。 单向控制阀的一侧与比例节流阀和致动器之间的管道连通。 多通阀还包括控制元件(8),其接收由每个单向控制阀反馈的负载压力并响应于负载压力以控制用于致动器的液压油的供应。 多通阀具有负载敏感功能,从而减少能量损失和系统热量生产率。 还提供了对应于多通阀的液压设备和混凝土泵车。