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    • 39. 发明申请
    • VALVE ARRANGEMENT FOR CONTROLLING A FIRST AND SECOND HYDRAULICALLY ACTUATABLE DISTRIBUTING VALVE
    • 阀装置用于第一和第二液压致动的单向阀的先导控制
    • WO01004498A1
    • 2001-01-18
    • PCT/EP2000/005986
    • 2000-06-28
    • F15B11/16F15B13/043G05G9/00
    • F15B13/0433F15B11/16F15B2211/20546F15B2211/3144F15B2211/329F15B2211/6336F15B2211/6355F15B2211/67F15B2211/71
    • The invention relates to a valve arrangement which is used to control a first and second hydraulically actuatable distributing valve (10,11) whereby each of said distributing valves can be proportionally displaced in a first direction from a neutral position under the effect of a control pressure which is exerted in a first control chamber (15,16) and also in a second direction under the effect of a control pressure which is exerted in a second control chamber (17,18). The valve arrangement comprises a proportionally displaceable control pressure valve (25) having a control output (30), whereby a control pressure can be adjusted to varying degrees. Said valve arrangement also comprises a pilot valve arrangement (35), whereby the first control chamber (15) of the first distributing valve (10) can be connected in a first control state to the control output of the control pressure valve and the pressure which is exerted in the first control chamber (16) of the second distributing valve (11) can be discharged. In a second control state, the first control chamber of the first distributing valve can be connected to the control output of the control pressure valve and the pressure exerted in the first control chamber of the first distributing valve can be discharged. Control of the distributing valves should be technically simple and inexpensive. This is achieved by mounting a second control valve arrangement (37), whereby in a first control state the second control chambers of both distributing valves are jointly connected to the control output of the control pressure valve; in a second control state the pressure which is exerted in the second control chambers of both distributing valves is simultaneously discharged. In order to displace a distributing valve in a second direction, the second set of control valves is placed in a first control state and the pressure exerted in the first control chamber of the distributing valve which is to be displaced is discharged while the first control chamber of the distributing valve which is not to be displaced is impinged upon by a control pressure.
    • 本发明涉及一种阀组件(10,11),用于第一和第二液压操作方向控制阀的先导控制被使用,其中的每一个是通过在第一方向上与控制压力施加第一控制腔(15,16)并通过施加中立位置 第二控制腔室(17,18)是可调节的正比于在第二方向上的控制压力。 所述阀组件包括具有控制输出(30),其不同高度的控制压力是可调节的按比例调节的先导压力阀(25)。 此外,它具有经由在第一方向控制阀(10)到先导阀的控制输出的第一开关状态(15)的第一控制腔可连接的切换阀装置(35)和所述第二方向阀(11)的第一控制腔(16)被解除的压力 和在第二开关状态中,第二方向控制阀的导阀的控制输出和连接到所述第一方向控制阀的第一控制腔室的第一控制腔室卸压。 阀的控制都应该尽量用一点点努力和成本。 这是根据本发明在一个第二开关阀装置(37)的存在来实现,经由第一切换状态共同连接到先导阀的控制输出,并且在第二开关状态的双向阀的第二控制腔室,阀双向的第二控制腔室 关节压力被释放。 为了调节在所述第二方向上的位置阀,第二切换阀装置进入所述第一开关状态,和非上进行调整三通阀压力的第一控制腔室被解除,而在第一控制室被调节三通阀用先导压力供给。