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    • 8. 发明公开
    • Improved open circuit oleodynamic system to actuate and control a concrete piston pump
    • 流体动力系统系统Kreislauffüreine Kolbenbetonpumpe。
    • EP1847710A1
    • 2007-10-24
    • EP06425273.7
    • 2006-04-20
    • COMPAGNIA ITALIANA FORME ACCIAIO S.p.A.
    • Cipolla, DavideChiesa, Pietro
    • F04B9/117F04B15/02F04B7/02
    • F04B15/023F04B7/0233F04B7/0241F04B9/1172F04B9/1178
    • An actuating oleodynamic system for pumps pumping viscous material, and in particular concrete, of the open-circuit and high-pressure type supplied by one or more hydraulic pumps, with direct, automatic-sequence driving system for the actuation of the hydraulic cylinders which displace the pistons in the liners of said pump and of the cylinders of a deviation valve through which said liners are alternately put in communication with a loading hopper and with a supply pipe. The system comprises a hydraulic valve assembly to control the displacement direction of said pistons, consisting of two hydraulic distributors, each actuated by a 5-way electrovalve to invert said direction between a pumping function and an intake function.
      The hydraulic circuit driving the hydraulic cylinders of the pump is symmetrical with respect to a plane transversal to the centreline of the two cylinders arranged side by side, in correspondence of which the hydraulic supply assembly is also arranged, resulting in a simple and quick switching of the supply from "shaft side" to "piston side" and viceversa.
    • 用于泵送由一个或多个液压泵提供的开路和高压类型的粘性材料,特别是混凝土的致动油动力系统,其具有用于致动液压缸的直接的自动顺序驱动系统, 所述泵的内衬中的活塞和偏心阀的气缸,所述衬套通过所述活塞交替地与装载料斗和供给管连通。 该系统包括用于控制所述活塞的位移方向的液压阀组件,其由两个液压分配器组成,每个分配器由5路电动阀驱动,以在泵功能和进气功能之间反转所述方向。 驱动泵的液压缸的液压回路相对于横列于并排布置的两个气缸的中心线的平面是对称的,对应于该液压缸液压缸也布置液压供应组件,导致简单和快速的切换 从“轴侧”到“活塞侧”的供应,反之亦然。