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    • 35. 发明公开
    • PIPE BREAKAGE CONTROL VALVE DEVICE
    • ROHRBRUCH STEUERVENTIL VORRICHTUNG
    • EP1143151A1
    • 2001-10-10
    • EP00969834.1
    • 2000-10-18
    • HITACHI CONSTRUCTION MACHINERY CO., LTD.
    • KARIYA, MasaoSUGIYAMA, Genroku
    • F15B11/08
    • F15B13/01F15B11/003F15B20/005F15B2211/30515F15B2211/30525F15B2211/3116F15B2211/31576F15B2211/329F15B2211/40515F15B2211/41527F15B2211/428F15B2211/46F15B2211/55F15B2211/8636Y10T137/7727
    • A pipe breakage control valve device (100) having an input/output port (1) connected to a bottom port of a hydraulic cylinder (102) and an input/output port (2) connected to one of the actuator ports of a control valve (103) through an actuator line (105), comprising a poppet valve disc (5) as a main valve, a first spool valve disc (6), as a pilot valve, having a pilot variable throttle part (6a) operated by a pilot pressure as an external signal and operating the poppet valve disc (5), a second spool valve disc (50) having a sub variable throttle part (50a) operated by a pilot pressure and controlling a sub flow rate, and a small relief valve (7) having the function of an overload relief valve, whereby, while various minimum functions necessary for the pipe breakage control valve device are performed, a pressure loss can be reduced, the size and production cost of the entire valve device can be reduced, smooth flow control characteristics can be obtained, and also a wider range of flow control characteristics can be set.
    • 一种具有连接到液压缸(102)的底部端口的输入/输出端口(1)和连接到控制阀的一个致动器端口的输入/输出端口(2)的管道断裂控制阀装置(100) (103),包括作为主阀的提升阀盘(5)的致动器线(105),作为先导阀的第一滑阀盘(6),具有由可操作的先导可变节流部(6a) 作为外部信号的先导压力并且操作提升阀盘(5),具有由先导压力操作并控制副流量的副可变节流部分(50a)的第二滑阀盘(50)和小的安全阀 (7)具有过载溢流阀的功能,由此,尽管执行管道破坏控制阀装置所需的各种最小功能,但是可以降低压力损失,可以减小整个阀装置的尺寸和生产成本, 可以获得流畅的流量控制特性,并且还可以有更广泛的荧光 可以设置w控制特性。
    • 39. 发明公开
    • ANTI-RUPTURE TUBE DEVICE
    • 防破裂管装置
    • EP3312436A1
    • 2018-04-25
    • EP17197491.8
    • 2017-10-20
    • Atlantic Fluid Tech S.r.l.
    • STORCI, Christian
    • F15B20/00F15B13/042F15B13/02E02F9/22
    • F15B20/005E02F9/226F15B13/023F15B13/0422F15B2211/8636
    • A hydraulic tube rupture protection device is disclosed that ensures safety conditions in the event of rupture of a flexible tube connected to a hydraulic actuator of an arm of an excavator, in which the tube rupture protection device comprises a control valve controlled by a pilot line connected to a control member that is manoeuvrable by an operator, a logic element is arranged on a connecting line that connects the pilot line to the flexible tube; in the event of rupture of the flexible tube, without moving the control member, the logic element will open at least partially, causing the at least partial closure of the control valve, limiting the descent speed of the arm of the excavator.
    • 公开了一种液压管道破裂保护装置,其确保在连接到挖掘机的臂的液压致动器的挠性管的破裂时的安全状况,其中管道破裂保护装置包括由连接的先导管线控制的控制阀 涉及一种操作人员可操作的控制部件,逻辑元​​件被布置在连接导向线与柔性管的连接线上; 在挠性管破裂的情况下,在不移动控制构件的情况下,逻辑元件将至少部分地打开,导致控制阀的至少部分关闭,限制挖掘机的臂的下降速度。