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12 条记录 (耗时 0.014 秒)

    HYDRAULIC MACHINE
    2.
    发明公开
    HYDRAULIC MACHINE 审中-公开

    公开(公告)号：US20230193931A1

    公开(公告)日：2023-06-22

    申请号：US17926800

    申请日：2020-05-22

    申请人： Volvo Construction Equipment AB

    发明人： Minheuk Kang ,  Manseuk Jeon

    IPC分类号： F15B13/02

    CPC分类号： F15B13/027 ,  F15B2211/323 ,  F15B2211/30505 ,  F15B2211/40515

    摘要： A hydraulic machine includes an actuator, a tank, a directional control valve disposed between the actuator and the tank, and an adjustable return check valve disposed between the directional control valve and the tank. The directional control valve includes an attachment actuator directional control valve disposed between an attachment actuator of the actuator and the tank and a swing actuator directional control valve disposed between a swing actuator of the actuator and the tank. The adjustable return check valve allows fluid to flow from the attachment actuator directional control valve toward the tank while applying the low back pressure but blocks a flow, and allows fluid to flow from the swing actuator directional control valve toward the tank while applying the high back pressure but blocks a reverse flow.

    Pressure control valve
    4.
    发明授权
    Pressure control valve 失效
    压力控制阀

    公开(公告)号：US5337778A

    公开(公告)日：1994-08-16

    申请号：US40141

    申请日：1993-03-30

    申请人： Svend E. Thomsen ,  Thorkild Christensen ,  Siegfried Zenker

    发明人： Svend E. Thomsen ,  Thorkild Christensen ,  Siegfried Zenker

    IPC分类号： F15B11/028 ,  F15B11/05 ,  F15B11/16 ,  F15B13/08 ,  F16K17/02

    CPC分类号： F15B11/165 ,  F15B2211/205 ,  F15B2211/30515 ,  F15B2211/30535 ,  F15B2211/3111 ,  F15B2211/323 ,  F15B2211/6054 ,  F15B2211/7054 ,  F15B2211/71 ,  Y10T137/2597 ,  Y10T137/263 ,  Y10T137/87185

    摘要： A pressure control valve of the type having pump, tank and load-sensing connections used in conjunction with one or more proportional type valves. In this type of system a load-sensing signal is tapped off from the output side of the proportional valves and conveyed to the load-sensing connection of the pressure control valve. A pressure control valve of the type herein has load-sensing and pressure chambers at opposite ends thereof with a slide valve therebetween which is spring biased towards the pressure chamber and controls the internal flow from the pump connection to the tank connection. The slide valve has an auxiliary change-over type valve which selectively connects the pressure chamber to the pump and load-sensing connections in response to a pressure differential between the pump and load-sensing connections to achieve a pressure balance between the load-sensing chamber and the pressure chamber.

    摘要翻译： 一种具有泵，罐和负载传感连接类型的压力控制阀，与一个或多个比例型阀一起使用。 在这种类型的系统中，负载感测信号从比例阀的输出侧分接，并被传送到压力控制阀的负载感测连接。 这种类型的压力控制阀在其相对端具有负载感测和压力室，其间具有一个滑阀，弹簧偏压朝向压力室，并控制从泵连接到罐连接的内部流。 滑阀具有辅助换向阀，其响应于泵和负载感测连接之间的压力差选择性地将压力室连接到泵和负载感测连接，以实现负载感测室 和压力室。

    Control device for hydraulic servomechanisms
    5.
    发明授权
    Control device for hydraulic servomechanisms 失效
    液压伺服机构控制装置

    公开(公告)号：US4285267A

    公开(公告)日：1981-08-25

    申请号：US90204

    申请日：1979-11-01

    申请人： Juan S. Bacardit

    发明人： Juan S. Bacardit

    IPC分类号： F15B9/08 ,  B62D5/08 ,  B62D5/24 ,  F15B11/08 ,  F15B13/02 ,  F15B13/04

    CPC分类号： F15B13/02 ,  B62D5/08 ,  F15B11/08 ,  F15B2211/30505 ,  F15B2211/30565 ,  F15B2211/31558 ,  F15B2211/31576 ,  F15B2211/323 ,  F15B2211/329 ,  F15B2211/555

    摘要： A control system for hydraulic servomechanisms comprising a double-acting jack the working chambers of which are selectively and alternately connectable to a source of pressurized fluid and to a fluid discharge through a reactive switching valve which itself is operated by a control member.According to the invention, there are provided between the valve and each working chamber of the jack means for intercepting the passage of fluid toward said chamber as long as the upstream pressure does not reach a predetermined threshold value.The application may be advantageously used in power-assisted steering systems for automotive vehicles.

    摘要翻译： 一种用于液压伺服机构的控制系统，包括双作用千斤顶，其工作室选择性地和可交替地连接到加压流体源，并通过其自身由控制构件操作的反应式切换阀进行流体排放。 根据本发明，只要上游压力不达到预定的阈值，在阀和每个工作室之间设置有用于拦截流体朝向所述室的通道的装置。 该应用可以有利地用于机动车辆的动力辅助转向系统中。

    Seat-style pressure-relief valve
    10.
    发明授权
    Seat-style pressure-relief valve 失效
    座式减压阀

    公开(公告)号：US5564468A

    公开(公告)日：1996-10-15

    申请号：US232299

    申请日：1994-08-25

    申请人： Martin Mueller

    发明人： Martin Mueller

    IPC分类号： F15B11/028 ,  F15B11/08 ,  F16K15/14 ,  F16K17/02 ,  F16K17/04 ,  F16K17/08 ,  F16K15/04

    CPC分类号： F16K17/0493 ,  F15B11/08 ,  F16K17/04 ,  F15B2211/30575 ,  F15B2211/323 ,  F15B2211/327 ,  F15B2211/50518 ,  F15B2211/5157 ,  F15B2211/55 ,  Y10S137/903 ,  Y10T137/7905 ,  Y10T137/7927

    摘要： The pressure-relief valve (10) has a valve member (18), which interacts with a valve seat (17). The valve member (18) is forced with a certain pretensioning against the valve seat, which pretensioning is applied by way of a diaphragm (21), either directly by this or by virtue of an additional spring means. Whenever a predefined maximum pressure is exceeded, the diaphragm (21) comes to bear against a stop face (26). Due to the free guidance of the valve member (18) tight, contamination-sensitive gaps are avoided. Although the pressure-relief valve is compact, secure bearing contact of the valve member against the seat is nevertheless ensured (FIG. 1).

    摘要翻译： PCT No.PCT / DE92 / 00757 Sec。 371日期：1994年8月25日 102（e）日期1994年8月25日PCT提交1992年8月9日PCT公布。 公开号WO93 / 10386 日期1993年5月27日减压阀（10）具有与阀座（17）相互作用的阀构件（18）。 迫使阀构件（18）以一定的预张紧力抵靠阀座，该预定张力通过隔膜（21）直接施加，或者借助附加的弹簧装置。 每当超过预定的最大压力时，隔膜（21）承受止挡面（26）。 由于阀构件（18）的自由引导紧密，因此避免了污染敏感的间隙。 尽管减压阀是紧凑的，但仍然确保阀构件抵靠座椅的可靠的轴承接触（图1）。