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50 条记录 (耗时 0.017 秒)

    Hydraulic pump/motor
    1.
    发明授权
    Hydraulic pump/motor 有权

    公开(公告)号：US11994097B2

    公开(公告)日：2024-05-28

    申请号：US17778714

    申请日：2020-12-04

    申请人： Komatsu Ltd.

    发明人： Shunsuke Koide ,  Yuuichirou Tanikawa ,  Hideaki Usami ,  Kenta Suzuki

    IPC分类号： F03C1/06 ,  F03C1/32 ,  F03C1/34 ,  F04B1/2021 ,  F04B1/2042 ,  F04B53/16

    CPC分类号： F03C1/0655 ,  F03C1/0647 ,  F03C1/0652 ,  F04B1/2021 ,  F04B1/2042 ,  F04B53/162

    摘要： A hydraulic pump/motor includes: a cylinder block rotating about a rotation axis; a piston in a cylinder bore; and a valve plate facing a cylinder port. The valve plate includes: a high pressure port through which oil discharged from the cylinder port flows; a low pressure port through which the oil to be sucked into the cylinder port flows; a region disposed between the high and low pressure ports in a circumferential direction of the rotation axis and including a top dead center position facing the cylinder port of the cylinder bore in which the piston moved to a top dead center is disposed; and a residual pressure release port between the top dead center position and the low pressure port in the region. The residual pressure release port includes first and second ports disposed at positions different from each other in the radial direction of the rotation axis.

    Hydrostatic Axial Piston Machine
    3.
    发明申请
    Hydrostatic Axial Piston Machine 审中-公开

    公开(公告)号：US20170159640A1

    公开(公告)日：2017-06-08

    申请号：US15364538

    申请日：2016-11-30

    申请人： Robert Bosch GmbH

    发明人： Josef Kopecki

    IPC分类号： F03C1/06 ,  F04B1/12 ,  F04B1/20

    CPC分类号： F03C1/0668 ,  F03C1/0652 ,  F03C1/0655 ,  F03C1/0692 ,  F04B1/122 ,  F04B1/124 ,  F04B1/2035 ,  F04B1/2042 ,  F04B1/2078 ,  F04B1/22 ,  F04B1/303

    摘要： A hydrostatic axial piston pump of swashplate construction, which is also configured to be operated as a motor, has a stationary control plate against which a rotating cylinder drum is tensioned. During operation, a tilting tendency of the cylinder drum arises in the direction of that quadrant of the control plate which is operatively connected to the first part of the displacement stroke of the pistons. The control plate has a supporting device configured for the cylinder drum. The supporting device is arranged adjacent to an outer edge of the control plate in the first quadrant thereof. The supporting device is configured to be formed by a hydrostatically relieved additional field.

    Hydraulic motor
    4.
    发明授权
    Hydraulic motor 有权
    液压马达

    公开(公告)号：US09574543B2

    公开(公告)日：2017-02-21

    申请号：US14372827

    申请日：2013-02-14

    申请人： KAYABA INDUSTRY CO., LTD.

    发明人： Kaori Kawabata

    IPC分类号： F03C1/00 ,  F03C1/40 ,  F03C1/06 ,  F03C1/34 ,  F04B1/20 ,  B60W10/103

    CPC分类号： F03C1/0678 ,  B60W10/103 ,  F03C1/004 ,  F03C1/0644 ,  F03C1/0655 ,  F03C1/0663 ,  F03C1/0665 ,  F03C1/0697 ,  F04B1/2035

    摘要： A hydraulic motor includes a motor mechanism that rotates by hydraulic liquid pressure led from a hydraulic liquid pressure source. The hydraulic motor includes a casing that defines a casing chamber which accommodates the motor mechanism, a brake mechanism that brakes the rotation of the motor mechanism, a brake release actuator that releases the braking of the brake mechanism by a brake release pressure led from the hydraulic liquid pressure source, and a throttle passage that is in communication with the casing chamber and extracts a portion of hydraulic liquid that is led into the brake release actuator and leads it to the casing chamber.

    摘要翻译： 液压马达包括由液压液压源引导的液压液压旋转的马达机构。 液压马达包括壳体，其限定容纳马达机构的壳体室，制动马达机构的旋转的制动机构，制动释放致动器，其通过从液压引导的制动释放压力释放制动机构的制动 液压源和与壳体室连通的节流通道，并且提取引导到制动释放致动器中并将其引导到壳体室的液压液体的一部分。

    Rotary hydraulic machine
    5.
    发明授权
    Rotary hydraulic machine 失效
    旋转液压机

    公开(公告)号：US06959638B2

    公开(公告)日：2005-11-01

    申请号：US10469734

    申请日：2002-03-05

    申请人： Hiroyuki Makino ,  Kenji Matsumoto ,  Naoki Itoh ,  Yoichi Kojima

    发明人： Hiroyuki Makino ,  Kenji Matsumoto ,  Naoki Itoh ,  Yoichi Kojima

    IPC分类号： F01B3/10 ,  F01B3/02 ,  F03C1/34 ,  F04B1/20 ,  F04B1/22 ,  F04B23/06 ,  F04B27/08 ,  F04B41/06 ,  F01B13/04

    CPC分类号： F04B41/06 ,  F03C1/0655 ,  F04B1/20 ,  F04B1/2042 ,  F04B1/22 ,  F04B23/06 ,  F04B27/0808 ,  F04B27/0839

    摘要： A rotary fluid machine includes a first operating part (49) and a second operating part (57), which are groups of axial piston cylinders, wherein a rotary valve (61) for controlling the intake and discharge of a working medium to and from the first and second operating parts (49, 57) is formed from a first valve part that has a flat sliding surface (68) perpendicular to a rotational axis (L) of the rotor (27) and controls the intake and discharge of the working medium to and from the first operating part (49), and a second valve part that has a cylindrical sliding surface (71) centered on the rotational axis (L) of the rotor (27) and controls the intake and discharge of the working medium to and from the second operating part (57). Since the intake and discharge of the working medium to and from the first and second operating parts (49, 57) are controlled by the common rotary valve (61), the size of the rotary fluid machine can be reduced.

    摘要翻译： 旋转流体机械包括作为轴向活塞气缸组的第一操作部件（49）和第二操作部件（57），其中，用于控制工作介质的进入和排出的旋转阀（61） 第一和第二操作部件（49,57）由具有与转子（27）的旋转轴线（L）垂直的平坦的滑动面（68）的第一阀部形成，并且控制工作介质的吸入和排出 以及第二阀部，其具有以转子（27）的旋转轴线（L）为中心的圆筒状的滑动面（71），并将工作介质的吸入和排出控制为 和第二操作部（57）。 由于工作介质往返于第一和第二操作部件（49,57）的进入和排出由公共旋转阀（61）控制，所以可以减小旋转流体机械的尺寸。

    Method and device for switching hydraulic fluid supplies, such as for a hydraulic pump/motor
    6.
    发明申请
    Method and device for switching hydraulic fluid supplies, such as for a hydraulic pump/motor 失效
    用于切换液压流体供应的方法和装置，例如用于液压泵/马达

    公开(公告)号：US20050120873A1

    公开(公告)日：2005-06-09

    申请号：US10731985

    申请日：2003-12-09

    申请人： Charles Gray

    发明人： Charles Gray

    IPC分类号： F03C1/34 ,  F03C1/40 ,  F04B1/32 ,  F15B9/14 ,  F15B13/04 ,  F16H61/40 ,  F16H61/4061 ,  F16H61/4069 ,  F15B11/08

    CPC分类号： F16H61/4069 ,  F03C1/0655 ,  F03C1/0678 ,  F03C1/0694 ,  F04B1/328 ,  F15B9/14 ,  F15B13/0402 ,  F16H61/40 ,  F16H61/4061

    摘要： A spool valve includes a first valve port coupled to a fluid source at a first pressure range, a second valve port coupled to a fluid source at a second, lower, pressure range, and first and second output ports coupled to a hydraulic device. The valve includes a valve spool configured to selectively channel fluid from the first and second valve ports to the first and second output ports, respectively, while in a first position, from the second valve port to both the output ports while in a second position, and from the second and first valve ports to the first and second output ports respectively, while in a third position, and a check valve to permit one-way fluid passage from the second output port to the first valve port. The valve may include an anti-reverse check valve configured to prevent fluid from flowing into the valve via the first output port.

    摘要翻译： 滑阀包括在第一压力范围处联接到流体源的第一阀口，在第二，较低压力范围处联接到流体源的第二阀口以及联接到液压装置的第一和第二输出端口。 所述阀包括阀芯，所述阀芯构造成在从第二阀口到所述输出端口的第一位置中分别将流体从所述第一和第二阀口分别引导到所述第一和第二输出端口，同时在第二位置， 并且在第三位置处分别从第二和第一阀口到第一和第二输出端口以及允许单向流体从第二输出端口通向第一阀口的止回阀。 阀可以包括构造成防止流体经由第一输出端口流入阀的反向止回阀。

    VALVE PLATE, CYLINDER BLOCK, AND HYDRAULIC MOTOR
    8.
    发明公开
    VALVE PLATE, CYLINDER BLOCK, AND HYDRAULIC MOTOR 审中-公开

    公开(公告)号：US20230279833A1

    公开(公告)日：2023-09-07

    申请号：US18018053

    申请日：2021-09-07

    申请人： Komatsu Ltd.

    发明人： Mitsutaka Ikeda

    IPC分类号： F03C1/34

    CPC分类号： F03C1/0655

    摘要： A valve plate of a hydraulic motor includes first and second pressure ports, and first and second oil grooves, the first and second pressure ports being alternately communicated with a cylinder bore in a cylinder block by bidirectional relative rotation in a state of being in contact with an end face of the cylinder block. Further, pad oil grooves communicating with the first oil groove and opened toward the end face of the cylinder block are provided in outer peripheral portions of the first and second pressure ports in a pad region, and the plurality of pad oil grooves is provided such that a proportion of an opening area to the end face of the cylinder block is larger at two end portions close to the second oil grooves than at a central portion separated from the second oil grooves in a circumferential direction of relative rotation.

    HYDRAULIC PUMP-MOTOR
    10.
    发明申请
    HYDRAULIC PUMP-MOTOR 审中-公开
    液压泵电机

    公开(公告)号：US20170045028A1

    公开(公告)日：2017-02-16

    申请号：US15306313

    申请日：2014-08-08

    申请人： Komatsu Ltd.

    发明人： Takeo Iida ,  Mitsuru Arai ,  Seiichi Hasegawa

    IPC分类号： F03C1/40 ,  F04B1/14 ,  F03C1/28 ,  F04B49/22 ,  F03C1/06 ,  F03C1/32 ,  F04B1/12 ,  F04B1/29

    CPC分类号： F03C1/0686 ,  F03C1/0605 ,  F03C1/0626 ,  F03C1/0631 ,  F03C1/0655 ,  F03C1/0678 ,  F04B1/124 ,  F04B1/143 ,  F04B1/146 ,  F04B1/2042 ,  F04B1/22 ,  F04B1/29 ,  F04B1/303 ,  F04B49/22

    摘要： An axial hydraulic pump-motor, in which a cylinder block having a plurality of cylinder bores on a valve plate having a high-pressure side port and a low-pressure side port for controlling an amount of reciprocation of a piston in each of the cylinder bores, the hydraulic pump-motor includes: a residual pressure release port provided on the valve plate and communicating until the cylinder bore on a top dead center side communicates with the low-pressure side port; a residual pressure acquisition portion obtaining a value of a residual pressure in the cylinder bore on the top dead center side; and a directional switching valve switching a flow path between the residual pressure release port and an hydraulic oil tank and a flow path between the residual pressure release port and the low-pressure side port.

    摘要翻译： 一种轴向液压泵电动机，其中在具有高压侧端口的阀板上具有多个气缸孔的气缸体和用于控制每个气缸中的活塞的往复运动量的低压侧端口 所述液压泵电动机包括：设置在所述阀板上并连通的残余压力释放口，直到上止点侧的气缸孔与所述低压侧端口连通; 剩余压力获取部分获得上死点侧的气缸孔中的残余压力值; 以及切换残留压力释放口和液压油箱之间的流路以及残余压力释放口和低压侧端口之间的流路的方向切换阀。