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    • 44. 发明专利
    • Hydraulic circuit for ram cylinder
    • RAM缸液压回路
    • JP2012233574A
    • 2012-11-29
    • JP2012087235
    • 2012-04-06
    • Yuutekku:Kk株式会社ユーテック
    • UENISHI YUKIO
    • F15B11/08E02B7/20
    • B30B15/161E02B7/36E02B7/40F15B11/0426F15B21/005F15B21/041F15B2211/30565F15B2211/30575F15B2211/3138F15B2211/40507F15B2211/40592F15B2211/41527F15B2211/41563F15B2211/455F15B2211/46F15B2211/611F15B2211/7052F15B2211/75F15B2211/85F15B2211/8636F15B2211/8757
    • PROBLEM TO BE SOLVED: To cause redundantly provided supply/discharge circuits of hydraulic oil for a ram cylinder to exhibit multiple functions, regarding a hydraulic circuit for the ram cylinder.SOLUTION: The hydraulic circuit for a ram cylinder comprises: a ram cylinder for driving a device to be driven; a control valve hydraulic unit which includes a supply control circuit provided with a supply control valve for controlling hydraulic oil of a hydraulic source and with a supply throttle valve for restricting an amount of oil supplied, and a discharge control circuit provided with a discharge control valve for controlling the hydraulic oil returning from the ram cylinder and a discharge throttle valve for restricting the returning hydraulic oil; a first supply/discharge circuit connecting the ram cylinder to the supply control circuit of the hydraulic unit; and a second supply/discharge circuit connecting the ram cylinder to the discharge control circuit of the hydraulic unit. A downstream side of the supply control valve and the supply throttle valve and a downstream side of the discharge control valve and the discharge throttle valve are connected to each other by a bypass circuit having an opening and closing function, and the bypass circuit makes the first and second supply/discharge circuits exhibit multiple functions.
    • 要解决的问题:为了使压头油缸的液压油的冗余供油/排出回路具有多种功能,关于液压缸的液压回路。 解决方案:用于冲压缸的液压回路包括:用于驱动待驱动装置的压头缸; 控制阀液压单元,其包括供给控制电路,该供给控制电路设置有用于控制液压源的液压油的供给控制阀和用于限制供给的油量的供给节流阀,以及具备排出控制阀 用于控制从压头缸返回的液压油和用于限制返回液压油的排放节流阀; 将压头缸连接到液压单元的供给控制回路的第一供给/排出回路; 以及将压头缸连接到液压单元的排出控制回路的第二供给/排出回路。 供给控制阀和供油节流阀的下游侧以及排气控制阀和排出节流阀的下游侧通过具有打开和关闭功能的旁通回路彼此连接,并且旁路回路使第一 并且第二供电/放电电路具有多种功能。 版权所有(C)2013,JPO&INPIT