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    MULTI-FUNCTION HYDRAULIC VALVE ASSEMBLY
    3.
    发明公开
    MULTI-FUNCTION HYDRAULIC VALVE ASSEMBLY 有权
    液压阀单元多种功能

    公开(公告)号：EP1481168A1

    公开(公告)日：2004-12-01

    申请号：EP03701411.5

    申请日：2003-02-14

    申请人： Lift Technologies Inc.

    发明人： MONDANI, Luciano ,  DODD, Mark

    IPC分类号： F15B13/07 ,  B66F9/22

    CPC分类号： B66F9/143 ,  B66F9/148 ,  B66F9/22 ,  F15B11/20 ,  F15B13/07 ,  Y10T137/2554 ,  Y10T137/8667 ,  Y10T137/8671

    摘要： A hydraulic valve assembly (10) for selectably delivering hydraulic fluid from a supply of hydraulic fluid to one of a first hydraulic operator (80) and a second hydraulic operator (82) is disclosed. The assembly includes first (32) and second (34) supply ports which communicate with the supply (18) and four operator ports (44,46,48,50). First (44) and third (48) ports communicate with the first hydraulic operator (80). Second (46) and fourth (50) ports communicate with the fourth hydraulic operator (82). First (36) and second (38) chambers are provided. The first chamber communicates with the first supply port and first and second operator ports. The second chamber communicates with the second supply port and third and fourth operator ports. Two selection valves (60,61) operating in unison are each located in each chamber. The selection valves operate between a first position at a first hydraulic fluid pressure and a second position at a second hydraulic fluid pressure. In a first position, the valves permit fluid communication of the first and second supply ports with the first and third operator ports, respectively. In a second position, the valves permit fluid communication with the second and fourth operator ports.

    HYDRAULISCHE VORSTEUERUNG
    4.
    发明授权
    HYDRAULISCHE VORSTEUERUNG 无效
    液压先导控制

    公开(公告)号：EP1163454B1

    公开(公告)日：2004-01-07

    申请号：EP00910754.1

    申请日：2000-03-02

    申请人： Bosch Rexroth AG

    发明人： HABERMANN, Heinz ,  KASTEL, Wilhelm

    IPC分类号： F15B13/042 ,  F16K31/524 ,  G05G9/00

    CPC分类号： B66D1/44 ,  F15B13/0406 ,  F15B13/0422 ,  F15B13/07 ,  G05G1/04 ,  Y10T137/86654 ,  Y10T137/87169

    摘要： The invention relates to a hydraulic pilot control comprising two control outputs (96, 97) which can be impinged upon by a control pressure and a hydraulic pilot control device which has a lever (81) that can be moved from a neutral position in a first and second direction. The hydraulic pilot control also comprises a pressure valve (69) which can be adjusted by displacing the lever from the neutral position. In a control pilot of this type, it should be possible to adjust the symmetrical behaviour of the pilot pressure used to displace the control lever in said two directions in a simple manner. To this end, the invention provides that the pressure valve can be adjusted in the same way, for both a displacement of the lever in the first direction and a displacement of the lever in the second direction. A directional valve (73) connects a regulating output (80) of the pressure valve to the first control output (96) or to the second control output (97), depending on the direction in which the lever is displaced.

    Multiplexed hydraulic control systems
    7.
    发明公开
    Multiplexed hydraulic control systems 失效
    Hydraulische Steuerungsvorrichtung mit多路复用器。

    公开(公告)号：EP0438925A2

    公开(公告)日：1991-07-31

    申请号：EP90314418.6

    申请日：1990-12-28

    申请人： WOODWARD GOVERNOR COMPANY

    发明人： Leeson, Plato J. ,  Sievert, Dale W. ,  Wardle, John W. ,  Clay, David G.

    IPC分类号： F15B13/07 ,  G05B19/46 ,  G05B19/414

    CPC分类号： F15B13/07 ,  G05B19/4144 ,  G05B19/46 ,  G05B2219/34238 ,  Y10T137/2322 ,  Y10T137/86501 ,  Y10T137/87201 ,  Y10T137/87885

    摘要： A multiplexed hydraulic control system which avoids the use of a rotary multiplexer and thereby allows for random selection of the multiplexed outlet ports and variable dwell times for the respective ports. A single hydraulic input is multiplexed among a plurality of hydraulic outputs. A control system provides two types of signals: (1) modulation signals selected from a plurality of multiplexed input signals for producing a modulating hydraulic flow, and (2) selector signals for operating on the multiplexer means to route the modulated signal to the appropriately selected channel.

    摘要翻译： 一种复用的液压控制系统，其避免使用旋转多路复用器，从而允许随机选择多个出口端口和各个端口的可变驻留时间。 单个液压输入在多个液压输出之间复用。 控制系统提供两种类型的信号：（1）从用于产生调制液压流的多个多路复用输入信号中选出的调制信号，和（2）用于在多路复用器装置上操作以将调制信号路由到适当选择的选择器信号 渠道。

    Multiplexed hydraulic control systems
    8.
    发明公开
    Multiplexed hydraulic control systems 失效
    多功能，液压系统。

    公开(公告)号：EP0437111A2

    公开(公告)日：1991-07-17

    申请号：EP90314419.4

    申请日：1990-12-28

    申请人： WOODWARD GOVERNOR COMPANY

    发明人： Sievert, Dale W. ,  Wardle, John W. ,  Leeson, James L.

    IPC分类号： G05B19/46 ,  G05B19/41 ,  F15B13/07

    CPC分类号： F15B13/07 ,  G05B19/414 ,  G05B19/46 ,  Y10T137/86911 ,  Y10T137/87201 ,  Y10T137/87209

    摘要： A multiplexed hydraulic control system having a plurality of hydraulic channels for individually controlling the positions of a plurality of actuators in the respective channels in accordance with a corresponding plurality of electrical control signals. The system includes a relatively small multiplexing valve or valve array which has a common input and a plurality of individually selected outputs. The multiplexing valve has a control input which is responsive to a source of binary selector signals, such selector signals being used to directly address any particular channel connected to the multiplexer. The system also includes means for modulating a hydraulic signal in accordance with selected ones of the plurality of electrical control signals, and applying the modulated hydraulic signal to the multiplexer common input. Control means then coordinates the addressing of the multiplexer with the modulating of the hydraulic signal to assure that hydraulic signals of the appropriate magnitude are coupled to each addressed channel, thereby to control all of the channels in accordance with the control signals for each channel.

    摘要翻译： 一种多路复用液压控制系统，具有多个液压通道，用于根据相应的多个电气控制信号单独地控制各个通道中的多个致动器的位置。 该系统包括具有公共输入和多个单独选择的输出的相对小的复用阀或阀阵列。 多路复用阀具有响应于二进制选择器信号源的控制输入，这种选择器信号用于直接寻址连接到多路复用器的任何特定通道。 该系统还包括用于根据多个电气控制信号中的选定的电气控制信号来调制液压信号的装置，以及将调制的液压信号施加到多路复用器公共输入。 然后，控制装置通过调节液压信号来协调多路复用器的寻址，以确保适当幅度的液压信号耦合到每个寻址的通道，从而根据每个通道的控制信号控制所有通道。

    Multiplexed control systems
    9.
    发明公开
    Multiplexed control systems 失效
    Steuersystemfürein Multiplexverfahren。

    公开(公告)号：EP0380234A1

    公开(公告)日：1990-08-01

    申请号：EP90300503.1

    申请日：1990-01-18

    申请人： WOODWARD GOVERNOR COMPANY

    发明人： Wardle, John W.

    IPC分类号： F15B13/07 ,  G05B19/46 ,  G05B19/403

    CPC分类号： G05B19/46 ,  F15B13/07 ,  G05B19/4144 ,  Y10T137/87201

    摘要： A time multiplexed hydraulic control system is disclosed in which a multiple section dog valve (35) is multiplexed among a plurality of channels. An electrical actuator (30) on the dog valve controls pilot means (31). The pilot means (31) is associated with a plurality of followers (40,41,42), one for each channel, and each follower (40,41,42) controls the flow rate through an associated output port (36,37,38). Multiplexing means in the dog valve (35) sequentially supplies fluid to the pilot means (31) for sequentially positioning then locking the respective followers (40,41,42). Thus, each channel has continuous hydraulic flow based on the position of its dedicated follower (40,41,42), with the followers (40,41,42) being repositioned on a multiplexed basis in associated time slots.

    摘要翻译： 公开了一种多段液压控制系统，其中在多个通道中多路复用多段狗阀（35）。 狗阀上的电致动器（30）控制先导装置（31）。 引导装置（31）与多个跟随器（40,41,42）相关联，每个通道一个，每个从动件（40,41,42）控制通过相关联的输出端口（36,37， 38）。 狗阀（35）中的多路复用装置顺序地向先导装置（31）供应流体，以顺序地定位然后锁定相应的跟随器（40,41,42）。 因此，每个通道基于其专用跟随器（40,41,42）的位置具有连续的液压流动，其中从动件（40,41,42）在相关联的时隙中以多路复用的基础重新定位。