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    • 8. 发明申请
    • HYDRAULIC VALVE, IN PARTICULAR A HYDRAULIC VALVE FOR EASING A SPRING-LOADED BRAKE
    • 液压阀,特别是对于弹簧制动空气
    • WO1995033639A1
    • 1995-12-14
    • PCT/EP1995001984
    • 1995-05-26
    • MANNESMANN REXROTH GMBHJOHN, HaraldRÜB, Winfried
    • MANNESMANN REXROTH GMBH
    • B60T15/04
    • B60T15/041
    • The invention concerns a hydraulic valve used in particular to ease a spring-loaded brake and which has a housing (10) and an actuator element (40) mounted on the housing and adjustable in two opposite directions. The valve also has an obturator element (14) fitted so that it can move within the housing, a control spring (26) fitted between a mobile support element (27) and the obturator element and a reset spring (25) fitted between the housing and a support element (28). The force in the reset spring can be increased by moving the actuator element in one direction and, when the actuator element moves back in the opposite direction, the reset spring moves the control-spring support element in the direction which increases the force in the control spring. In order to keep the force necessary to operate the brakes low, mechanical force-magnification means (48, 51) are fitted to act between the reset and control springs. The resetting force which the reset spring is required to produce is thus relatively small, thus also making it possible to keep the force necessary to compress the reset spring small.
    • 本发明涉及一种特别用于释放弹簧制动器,和包括:壳体(10)和在相反的方向安装到其上可调节的致动构件(40),一个在所述壳体可移动地容纳阀构件(14)的液压阀, 一个可移动的支撑元件(27)和设置在所述阀构件,和复位弹簧(25)之间控制弹簧(26)设置在壳体和支撑元件(28)所述,其电压由在移动致动器之间的一个方向 enlargeable是从所述控制弹簧的和同时松弛,当在相反的方向可自由移动的致动构件,所述控制弹簧的支撑元件是在所述控制弹簧的电压增加方面可调整。 为了保持操作力低,平躺在回位弹簧和控制弹簧装置(48,51),用于机械力的放大之间的功率流。 因此,为了通过复位弹簧力施加相对较小,以便在需要用于偏置复位弹簧的操作力可以很小。