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20 条记录 (耗时 0.023 秒)

    Hydraulic control apparatus
    4.
    发明授权
    Hydraulic control apparatus 失效
    液压控制装置

    公开(公告)号：US4646622A

    公开(公告)日：1987-03-03

    申请号：US800188

    申请日：1985-11-21

    申请人： Naoki Ishizaki ,  Sadao Nunotani ,  Tatsumi Tada ,  Kazuo Uehara ,  Shuki Akushicki

    发明人： Naoki Ishizaki ,  Sadao Nunotani ,  Tatsumi Tada ,  Kazuo Uehara ,  Shuki Akushicki

    IPC分类号： F15B13/042 ,  B66C13/18 ,  F15B13/043

    CPC分类号： B66C13/18 ,  Y10T137/87209

    摘要： A hydraulic control apparatus has at least two meter-in and two meter-out poppet valves. In order to be compact and deal with a great flow rate, the apparatus is arranged such that a pair of meter-in poppet valves and load check valves are located in an upper horizontal plane, a pair of meter-out poppet valves and solenoid-actuated pilot valves are located in a lower horizontal plane, and a pair of a pilot valve associated with the meter-out poppet valve and a reducing valve associated with the meter-in poppet valve are located in a middle horizontal plane and are respectively disposed in opposed relationship to each other, and the load check valve is vertically located in parallel relationship with the meter-out poppet valve.

    摘要翻译： 一个液压控制装置具有至少两个输入和两个出口的提升阀。 为了紧凑化并且处理大流量，该装置被布置成使得一对插入式提升阀和负载止回阀位于上水平面中，一对出口提升阀和螺线管 - 致动先导阀位于下水平面上，与出口提升阀相关联的一对先导阀和与插入式提升阀相关联的减压阀位于中间水平面中，分别设置在 相反的关系，负载止回阀与排出提升阀平行地垂直设置。

    Displacement control system for variable displacement pump
    5.
    发明授权
    Displacement control system for variable displacement pump 失效
    变量泵位移控制系统

    公开(公告)号：US4244678A

    公开(公告)日：1981-01-13

    申请号：US52098

    申请日：1979-06-26

    申请人： Kazuo Uehara ,  Hideaki Toma ,  Yoshito Sato

    发明人： Kazuo Uehara ,  Hideaki Toma ,  Yoshito Sato

    IPC分类号： F04B49/00

    CPC分类号： F04B49/002

    摘要： A displacement control system for a variable displacement pump comprising a charge pump; a first and a second actuators connected in parallel to the variable displacement pump; a cut-off control valve connected to the charge pump, the cut-off control valve including a valve body having a first and a second pump ports, a pressure port and an outlet port formed therein, the first pump port being connected to the charge pump, the second pump port being connected to the variable displacement pump and the pressure port being connected to the first actuator, a sleeve mounted within the valve body, a first and a second pins slidably mounted within the sleeve, a spool slidably mounted within the sleeve, a cylindrical cap member fixedly secured to the valve body defining a spring chamber therein, and a spring disposed within the spring chamber for urging the spool toward connecting the first pump port with the outlet port; and a servo booster connected to the outlet port for controlling the displacement of the variable displacement pump.

    摘要翻译： 一种用于包括电荷泵的可变排量泵的排量控制系统; 与可变排量泵并联连接的第一和第二致动器; 连接到所述电荷泵的截止控制阀，所述截止控制阀包括具有第一和第二泵口的阀体，形成在其中的压力端口和出口端口，所述第一泵口连接到所述电荷 泵，第二泵口连接到可变排量泵，压力端口连接到第一致动器，安装在阀体内的套筒，可滑动地安装在套筒内的第一和第二销，可滑动地安装在阀体内的阀芯 套筒，固定地固定到阀体上的圆筒形盖构件，其中限定弹簧室;以及弹簧，其设置在弹簧室内，用于推动阀芯以将第一泵口与出口连接; 以及连接到出口的伺服增压器，用于控制可变排量泵的排量。

    Hydraulic control system for off-highway self-propelled work machines
    6.
    发明授权
    Hydraulic control system for off-highway self-propelled work machines 失效
    非公路自走式作业机液压控制系统

    公开(公告)号：US4517800A

    公开(公告)日：1985-05-21

    申请号：US310424

    申请日：1981-10-09

    申请人： Tadao Karakama ,  Kazuo Uehara

    发明人： Tadao Karakama ,  Kazuo Uehara

    IPC分类号： B62D5/07 ,  B62D5/32 ,  B62D5/06 ,  F15B11/16 ,  F15B13/06 ,  F16D33/00

    CPC分类号： B62D5/32 ,  B62D5/07

    摘要： A control system has two fixed-displacement pumps for supplying pressurized fluid to a pair of steering cylinders via a steering valve and to a pair of implement cylinders via an implement valve. Connected next to the pumps is a demand valve which is pilot operated to deliver to the steering cylinder pair the pressurized fluid from only one pump upon slight displacement of the steering valve and the pressurized fluid from both pumps upon greater displacement of the steering valve. The demand valve is further pilot operated to deliver to the implement cylinder pair the pressurized fluid from only one pump when the implement valve is actuated in a direction to lower the implement assembly, and the pressurized fluid from both pumps when the implement valve is actuated in a direction to raise the implement assembly. In additional embodiments the pumps are of the variable-displacement type, with their displacement adjusted by servo controls responsive to the pressure of the fluid being drained from the demand valve.

    摘要翻译： 控制系统具有两个固定排量泵，用于经由转向阀向一对转向缸提供加压流体，并经由工具阀向一对工具缸提供。 连接在泵旁边的是一个要求阀，它是先导操作的，以便在转向阀更大的位移时，从转向阀和来自两个泵的加压流体轻微移位时，仅从一个泵将压缩流体输送到转向缸。 进一步的要求阀被进一步操作，以便当工具阀沿着降低工具组件的方向致动时，将来自仅一个泵的加压流体输送到工具缸对，并且当工具阀被致动时来自两个泵的加压流体 提高器具组件的方向。 在另外的实施例中，泵是可变排量型的，其响应于从需求阀排出的流体的压力，其伺服控制的位移被调整。

    Hydraulic circuit for a variable displacement pump
    7.
    发明授权
    Hydraulic circuit for a variable displacement pump 失效
    用于变排量泵的液压回路

    公开(公告)号：US4420937A

    公开(公告)日：1983-12-20

    申请号：US286535

    申请日：1981-07-24

    申请人： Toshihiro Naruse ,  Kazuo Uehara ,  Hideaki Saito

    发明人： Toshihiro Naruse ,  Kazuo Uehara ,  Hideaki Saito

    IPC分类号： F04B49/00 ,  F04B49/08 ,  F15B11/00 ,  F16H39/46

    CPC分类号： F16H61/465 ,  F04B49/08

    摘要： A hydraulic circuit for a so called feathering control of a variable displacement pump in which displacement of the variable displacement pump is controlled to a minimum when every actuator in a system is not in operation thereby keeping a power loss to a minimum. The hydraulic circuit includes a jet flow sensor for detecting a dynamic pressure of fluid. The jet flow sensor is disposed in a circuit for connecting a system pressure line to a reservoir and is adapted to convert static pressure of the fluid to dynamic pressure thereof. This detected dynamic pressure is introduced into a servo mechanism for the variable displacement pump for effecting feathering control.

    摘要翻译： 一种用于可变排量泵的所谓的羽化控制的液压回路，其中当系统中的每个致动器不在操作中时，可变排量泵的排量被控制到最小，从而将功率损失保持在最小。 液压回路包括用于检测流体的动态压力的喷射流量传感器。 射流流量传感器设置在用于将系统压力线连接到储存器的回路中，并且适于将流体的静压转换成其动态压力。 将检测到的动态压力引入用于变容量泵的伺服机构中以实现羽化控制。

    Single or plural variable displacement pump control with an improved flow metering valve
    8.
    发明授权
    Single or plural variable displacement pump control with an improved flow metering valve 失效
    单个或多个可变排量泵控制与改进的流量计量阀

    公开(公告)号：US4203712A

    公开(公告)日：1980-05-20

    申请号：US892305

    申请日：1978-03-31

    申请人： Kazuo Uehara

    发明人： Kazuo Uehara

    IPC分类号： F04B49/00

    CPC分类号： F04B49/002 ,  F04B49/007

    摘要： A hydraulic control system for adjusting the displacement of a variable displacement pump or pumps as dictated by pump output pressure and input speed. Driven by the same prime mover as the pump or pumps is a charging pump which communicates with a restrictor adapted to create a differential in the output fluid pressure therefrom, which pressure differential is sensed by a sensing valve for providing a corresponding output fluid pressure. Servo control means provided to the variable displacement pump or pumps communicates with both the restrictor and the sensing valve for adjusting the pump displacement in response to the fluid pressures delivered therefrom. A flow metering valve assembly is connected in a bypass around the restrictor to permit the passage therethrough of the charging pump output fluid at a rate metered in accordance with the variable displacement pump output pressure.

    摘要翻译： 一种液压控制系统，用于根据泵输出压力和输入速度来调节可变排量泵或泵的位移。 由与泵或泵相同的原动机驱动的是与限流器连通的充气泵，该限制器适于产生来自其的输出流体压力的差压，用于提供相应的输出流体压力的感测阀感测到该压力差。 提供给可变排量泵或泵的伺服控制装置与限流器和传感阀两者相通，用于响应于从其输送的流体压力来调节泵的位移。 流量计量阀组件围绕节流器连接在旁路中，以允许按照可变排量泵输出压力计量的速率通过充电泵输出流体。

    Pressure compensating type hydraulic valve
    9.
    发明授权
    Pressure compensating type hydraulic valve 失效
    压力补偿式液压阀

    公开(公告)号：US5188147A

    公开(公告)日：1993-02-23

    申请号：US611499

    申请日：1990-11-13

    申请人： Kiyoshi Shirai ,  Kazuo Uehara ,  Koichi Morita ,  Takahide Takiguchi ,  Naoki Ishizaki

    发明人： Kiyoshi Shirai ,  Kazuo Uehara ,  Koichi Morita ,  Takahide Takiguchi ,  Naoki Ishizaki

    IPC分类号： E02F9/22 ,  F15B11/00 ,  F15B11/05 ,  F15B13/04

    CPC分类号： E02F9/2296 ,  E02F9/2225 ,  E02F9/2232 ,  F15B13/0417 ,  Y10T137/87169 ,  Y10T137/87185

    摘要： A pressure compensating type hydraulic valve wherein a pressure compensation can be made according to the movement of the movable portion of a hydraulic actuator, and the movable portion of the actuator can be stopped against load pressure when it is located at its neutral position. This pressure compensating type hydraulic valve is arranged such that a spool (24) is moved in a valve hole (16) so as to allow a first actuating port (21) and a second actuating port (22) connected with pressure receiving chambers (13.sub.1, 13.sub.2), respectively, defined on both sides of a movable portion (13.sub.3) of a hydraulic actuator (13) to be selectively connected with or disconnected from a first pumping port and a second pumping port in which fluid under pressure discharged by a hydraulic pump (10) flows, through the intermediary of a first check valve (31) and a second check valve (32), respectively, both of which are preset at predetermined pressures, and either one of the actuating ports which is isolated from the pumping port is connected with either one of the tank ports (33.sub.1, 33.sub.2).

    Electric hydraulic hybrid motor
    10.
    发明授权
    Electric hydraulic hybrid motor 失效
    电动液压混合动力电动机

    公开(公告)号：US5927073A

    公开(公告)日：1999-07-27

    申请号：US913027

    申请日：1997-09-05

    申请人： Naoki Ishizaki ,  Kazuo Uehara ,  Hiromasa Yamaguchi

    发明人： Naoki Ishizaki ,  Kazuo Uehara ,  Hiromasa Yamaguchi

    IPC分类号： F04B9/00 ,  F04B1/22 ,  F04B17/04 ,  F04B49/00 ,  F04B49/06 ,  F04B53/18 ,  H02K7/00 ,  H02K7/14 ,  F16D39/00

    CPC分类号： F04B53/18 ,  F04B1/22 ,  F04B17/046 ,  F04B49/002 ,  F04B49/06 ,  H02K7/00 ,  H02K7/14 ,  F04B2201/0402 ,  F04B2201/1201 ,  F04B2201/12041 ,  F04B2203/0207

    摘要： The present invention is an electric hydraulic hybrid motor which can be made smaller in size and can provide excellent performance. To this end, a hydraulic pump (20) and a hydraulic motor (60) are respectively placed inwardly of the stator (12) of an electric motor (10) and the rotor (14) of the electric motor (10), and the hydraulic pump (20) includes a cylinder block (21) for the pump and a plunger (23) for the pump which are adapted to rotate together with the rotor (14), and the hydraulic motor (60) includes a cylinder block (61) for the motor and a plunger (23a) for the motor.

    摘要翻译： PCT No.PCT / JP96 / 00524 Sec。 371日期：1997年9月5日 102（e）日期1997年9月5日PCT提交1996年3月5日PCT公布。 出版物WO96 / 27937 日期1996年9月12日本发明是一种电动液压混合动力电动机，其尺寸可以更小并且可以提供优异的性能。 为此，将液压泵（20）和液压马达（60）分别放置在电动机（10）的定子（12）的内部和电动机（10）的转子（14）的内部，并且 液压泵（20）包括用于泵的气缸体（21）和用于泵的柱塞（23），其适于与转子（14）一起旋转，并且液压马达（60）包括气缸体（61） ）和用于电动机的柱塞（23a）。