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117 条记录 (耗时 0.012 秒)

    SWITCHING VALVE
    94.
    发明公开
    SWITCHING VALVE 有权
    SCHALTVENTIL

    公开(公告)号：EP2827033A1

    公开(公告)日：2015-01-21

    申请号：EP13760558.0

    申请日：2013-03-12

    申请人： Kayaba Industry Co., Ltd.

    发明人： TERAO, Takeshi

    IPC分类号： F16K31/122 ,  F15B21/04 ,  F16K11/07

    CPC分类号： F16K31/1221 ,  F15B13/042 ,  F15B21/044 ,  F15B2211/329 ,  F15B2211/355 ,  F16K11/07 ,  F16K11/0712 ,  F16K11/0716 ,  F16K31/124 ,  Y10T137/86582 ,  Y10T137/8671

    摘要： A change-over valve comprises a spool housed in a spool housing, and a pilot chamber facing at least an end of the spool. An axial passage is formed in the spool along the axial direction. While being connected to a pilot chamber, the axial passage communicates with a tank passage via a small hole having an opening on an outer periphery of the spool in accordance with displacement of the spool, to discharge the air in the pilot chamber to the tank passage. Since the axial passage is formed at a location offset from a center axis of the spool, a length of the small hole is shortened and the small hole is easily processed.

    摘要翻译： 转换阀包括容纳在卷轴壳体中的卷轴和面向卷轴的至少一端的导向室。 轴向通道沿轴向形成在阀芯中。 在连接到导向室的同时，轴向通道经由一个小孔与罐通道连通，该小孔根据阀芯的位移而在阀芯的外周上具有开口，将先导室中的空气排放到油箱通道 。 由于轴向通道形成在与阀芯的中心轴线偏离的位置处，所以小孔的长度被缩短，并且小孔容易被加工。

    Pressure control device for heavy equipment
    95.
    发明公开
    Pressure control device for heavy equipment 审中-公开
    施工压力控制装置

    公开(公告)号：EP1906030A3

    公开(公告)日：2013-12-18

    申请号：EP07014737.6

    申请日：2007-07-27

    申请人： Volvo Construction Equipment Holding Sweden AB

    发明人： Cheong, Hae Kyun

    IPC分类号： F15B13/04 ,  G05D16/10

    CPC分类号： F15B13/0402 ,  G05D16/18 ,  Y10T137/86582 ,  Y10T137/8663 ,  Y10T137/86702

    摘要： A pressure control valve for heavy equipment is disclosed, which can smoothly operate a working device having a high load pressure by limiting a supply of hydraulic fluid to a working device having a low load pressure in the case of simultaneously operating a plurality of working devices in a hydraulic circuit in which a plurality of control valves (e.g., a boom control valve and a bucket control valve) are connected in parallel to a single hydraulic pump. The pressure control device includes a valve body (5), a spool (13) slidably installed in the valve body and shifted to connect an input port (1) to an output port (2) or to disconnect the input port from the output port, and a signal pressure port (4) for applying a signal pressure to a diaphragm (D2) of the spool located in a third back chamber (14) formed in the valve body, disconnecting the input port (1) from the output port (2), and returning the pressure in the output port (2) to the drain port (3). The spool (13) is shifted, corresponding to the signal pressure applied from an outside to the third back chamber (14), to control the operating pressure being applied from the input port (1) to the output port (2).

    STEPPER MOTOR DRIVEN PROPORTIONAL FUEL METERING VALVE
    96.
    发明公开
    STEPPER MOTOR DRIVEN PROPORTIONAL FUEL METERING VALVE 有权
    步进电机驱动的比例燃油计量阀

    公开(公告)号：EP2265813A1

    公开(公告)日：2010-12-29

    申请号：EP09718268.7

    申请日：2009-02-17

    申请人： WOODWARD GOVERNOR COMPANY

    发明人： SPICKARD, Mark A. ,  HOEMKE, Brian E.

    IPC分类号： F02M61/16 ,  H02P8/00 ,  F02M51/06 ,  F02M63/00

    CPC分类号： F02C7/232 ,  F02C9/263 ,  F16K11/0716 ,  F16K31/52483 ,  Y02T50/671 ,  Y10T137/86582 ,  Y10T137/86614 ,  Y10T137/86622 ,  Y10T137/8663

    摘要： A low energy stepper motor driven fuel metering valve (FMV) that eliminates the need for a position sensor is provided. The stepper motor rotates a cam that replaces the flapper valve used in conventional systems. The cam rotation increases the gap between the cam and nozzle on one side of the cam. The gap difference affects the pressures on the spool piston ends, which forces the piston in the direction that will return the cam-nozzle gap to a distance that results in a pressure balance to return. As a result, the relatively low energy stepper motor controls the relatively high energy hydromechanical system via the cam-nozzle-orifice system. The cam is precision machined and assures stroke/degree gain accuracy. The hydraulic system assures the piston tracks the cam essentially perfectly except for the effects of piston stiction forces.

    摘要翻译： 提供无需位置传感器的低能量步进电机驱动燃料计量阀（FMV）。 步进电机旋转凸轮，替代传统系统中使用的挡板阀。 凸轮旋转会增加凸轮和凸轮一侧喷嘴之间的间隙。 间隙差异会影响滑阀活塞末端的压力，这将迫使活塞朝着将使凸轮 - 喷嘴间隙返回到导致压力平衡返回的距离的方向。 结果，相对较低的能量步进电机通过凸轮喷嘴孔系统控制较高能量的液压机械系统。 凸轮精确加工并确保行程/度数增益的准确性。 除了活塞粘滞力的影响外，液压系统确保活塞基本上完美地跟踪凸轮。

    HYDRAULISCHE VENTILVORRICHTUNG
    97.
    发明公开
    HYDRAULISCHE VENTILVORRICHTUNG 有权
    液压阀装置

    公开(公告)号：EP2220378A1

    公开(公告)日：2010-08-25

    申请号：EP08802277.7

    申请日：2008-09-17

    申请人： Hydac Filtertechnik Gmbh

    发明人： RÜB, Winfried

    IPC分类号： F15B13/04

    CPC分类号： F15B13/0417 ,  F15B11/003 ,  Y10T137/86582 ,  Y10T137/8663 ,  Y10T137/86702 ,  Y10T137/86879

    摘要： The invention relates to a hydraulic valve device, especially in the form of at least one load sensing valve, comprising a valve housing (10), a control slide (12) arranged in a longitudinally mobile manner and used to control a fluid connection arrangement (14) comprising a plurality of connection points, at least one control pressure line (PST), and at least one supply pressure line (Y). At least for a load sensing connection (LS), a pocket-type channel (18) is arranged between the valve housing (10) and the control slide (12), for a control pressure line (PST) and a supply pressure line (Y), and this enables the already available ring channel of the load sensing message chain to also be used on an axial point of the control slide axle of, thereby reducing cost and space.