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38 条记录 (耗时 0.012 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.

    POSITIVE DISPLACEMENT MACHINES AND METHODS OF INCREASING LOAD-CARRYING CAPACITIES THEREOF
    4.
    发明申请
    POSITIVE DISPLACEMENT MACHINES AND METHODS OF INCREASING LOAD-CARRYING CAPACITIES THEREOF 审中-公开
    积极位移机械及其加载承载能力的方法

    公开(公告)号：US20170016431A1

    公开(公告)日：2017-01-19

    申请号：US15207889

    申请日：2016-07-12

    申请人： Purdue Research Foundation

    发明人： Monika Marianne Ivantysynova ,  Meike H. Ernst

    IPC分类号： F04B1/20 ,  F04B1/22 ,  F01B3/00 ,  F04B53/16 ,  F04B53/14 ,  F04B19/22 ,  F04B53/18

    CPC分类号： F04B1/2035 ,  F01B3/0044 ,  F03C1/0652 ,  F04B1/143 ,  F04B27/0834 ,  F04B39/0292 ,  F04B53/162 ,  F04B53/18

    摘要： Positive displacement machines and methods therefor capable of increasing a load-carrying capacity of a piston-cylinder lubrication interface of positive displacement machines having a cylinder block, a cylindrical bore defined in the cylinder block, a piston reciprocably disposed within the cylindrical bore, and a working fluid within the piston-cylinder lubrication interface to provide a load-bearing function between the piston and the bore wall of the cylinder bore. The method includes providing at least one circumferential groove on a bore wall of the cylindrical bore within the piston-cylinder lubrication interface having an opening facing the piston and that is in fluidic communication with the piston-cylinder lubrication interface so as to contain a portion of the working fluid, and operating the positive displacement machine such that the working fluid enters the cylindrical groove and promotes hydrostatic balancing of pressure of the working fluid within the piston-cylinder lubrication interface.

    摘要翻译： 具有气缸体，限定在气缸体中的圆柱形孔的容积式机械的活塞 - 气缸润滑界面的承载能力的容积式机器及其方法，可往复地设置在圆柱形孔内的活塞和 活塞 - 气缸润滑界面内的工作流体，以在活塞和气缸孔的孔壁之间提供承载功能。 该方法包括在活塞 - 气缸润滑界面内的圆柱形孔的孔壁上提供至少一个圆周凹槽，其具有面向活塞的开口并与活塞 - 气缸润滑界面流体连通，以便容纳一部分 工作流体，以及操作容积式机器，使得工作流体进入圆柱形沟槽并促进活塞 - 缸体润滑界面内工作流体压力的静水平衡。

    Hydraulic pump motor
    6.
    发明授权
    Hydraulic pump motor 有权

    公开(公告)号：US12104569B2

    公开(公告)日：2024-10-01

    申请号：US17631987

    申请日：2020-09-17

    申请人： Komatsu Ltd.

    发明人： Hideaki Usami ,  Naohiro Okubo

    IPC分类号： F03C1/34 ,  F03C1/32 ,  F04B1/2035 ,  F04B1/2042 ,  F04B11/00

    CPC分类号： F03C1/0652 ,  F03C1/0655 ,  F04B1/2035 ,  F04B1/2042 ,  F04B11/00

    摘要： A hydraulic pump motor includes: a cylinder block; a plurality of cylinder bores; a port block and a valve plate, the valve plate being provided with a high pressure port and a low pressure port, the port block being provided with a discharge oil passage and a suction oil passage, a piston disposed in each cylinder bore, and oil flowing through the discharge oil passage and the suction oil passage. Further, the valve plate is provided with a reproduction port at a bottom dead center side position, the port block is internally provided with a reproduction oil passage, and the reproduction oil passage passes through a first region on a side of the high pressure port of the virtual plane and passes through a second region on a side of the low pressure port of the virtual plane in the port block.

    A HYDRAULIC DEVICE
    7.
    发明申请
    A HYDRAULIC DEVICE 审中-公开

    公开(公告)号：US20190211811A1

    公开(公告)日：2019-07-11

    申请号：US16099356

    申请日：2017-05-17

    申请人： INNAS BV

    发明人： Peter Augustinus Johannes Achten

    IPC分类号： F04B1/20 ,  F03C1/32

    CPC分类号： F04B1/2035 ,  F03C1/0652 ,  F04B53/162

    摘要： A hydraulic device comprises a shaft mounted in a housing rotatable about a first axis. A plurality of pistons are fixed to a flange rotatable about a first axis. A plurality of cylindrical sleeves sleeve bottoms and sleeve jackets that cooperate with the pistons to form compression chambers. Rotation of the shaft causes the volumes of the compression chambers. Each piston head forms a sealing line within the cooperating sleeve jacket. Each sleeve jacket has a thin wall and/or is elastically movable with respect to the sleeve bottom such that at a fixed pressure the radial deformation of the sleeve jacket at the sealing line is substantially constant at piston positions ranging from bottom dead center to a position where the distance between the sleeve bottom and the sealing line is less than 50% of the distance between the sleeve bottom and the sealing line at bottom dead center.

    COOLING AND LUBRICATING SYSTEM FOR A PISTON SEALING DEVICE
    8.
    发明申请
    COOLING AND LUBRICATING SYSTEM FOR A PISTON SEALING DEVICE 审中-公开

    公开(公告)号：US20170184009A1

    公开(公告)日：2017-06-29

    申请号：US15386320

    申请日：2016-12-21

    申请人： Rabhi VIANNEY

    发明人： Rabhi VIANNEY

    IPC分类号： F01P3/06 ,  F04B53/18

    CPC分类号： F01P3/06 ,  F03C1/0605 ,  F03C1/0652 ,  F04B1/124 ,  F04B1/2035 ,  F04B53/166 ,  F04B53/18

    摘要： The cooling and lubricating (1) system is provided for a piston sealing device (2) for a piston (3) which comprises a fixed skirt (7) and a sliding skirt (12) joined together by an interskirt mechanical connection (13) to axially compress a continuous extensible segment (15) under the action of a sliding skirt spring (20), said system (1) adding to said device (2) a sliding skirt thrust ring (21) so as to insert between the fixed skirt (7) and the continuous extensible segment (15) a flow valve (22) traversed by the interskirt mechanical connection (13), said valve (22) being held at rest away from the fixed skirt (7) by a valve return spring (30) on the one hand, and comprising a flow calibration orifice (27) on the other hand.

    Hydrostatic Axial Piston Machine
    10.
    发明申请
    Hydrostatic Axial Piston Machine 审中-公开
    静压轴向活塞机

    公开(公告)号：US20150122115A1

    公开(公告)日：2015-05-07

    申请号：US14536420

    申请日：2014-11-07

    申请人： Robert Bosch GmbH

    发明人： Marcus Herrmann ,  Lutz Bellmann ,  Arnold Gente ,  Michael Gaumnitz ,  Tim Maier ,  Dieter Amesoeder ,  Andreas Illmann ,  Steffen Sies ,  Bernd Huehn ,  Corinna Hager ,  Juergen Vdovak ,  Marian Kacmar

    IPC分类号： F01B3/00

    CPC分类号： F01B3/0035 ,  F03C1/0605 ,  F03C1/0652 ,  F03C1/0665 ,  F04B1/124 ,  F04B1/2035 ,  F04B1/2071

    摘要： A hydrostatic axial piston machine includes a drive shaft and a plurality of cylinder sleeves in which a spherical or ball-shaped section and a spherical or ball-shaped piston are inserted to delimit a respective displacer chamber. The sections are secured on a rotor, while the pistons are secured on a piston disk or piston drum. The piston disk is configured to be tilted at different pivoting angles relative to the rotor in a variable-displacement machine, or the piston disk is tilted continuously relative to the rotor in a constant-displacement machine. The rotor and the piston disk are coupled to one another for conjoint rotation by a driving device. The rotor and the piston disk can also be coupled indirectly by a drive shaft of the machine. A sliding joint axial with respect to a drive shaft is arranged between the rotor and the piston disk.

    摘要翻译： 静液压轴向活塞机包括驱动轴和多个气缸套筒，其中插入球形或球形部分以及球形或球形活塞以限定相应的置换室。 这些部分固定在转子上，而活塞固定在活塞盘或活塞鼓上。 活塞盘构造成在可变排量机器中相对于转子以不同的转动角度倾斜，或者活塞盘在恒定位移机器中相对于转子连续倾斜。 转子和活塞盘通过驱动装置彼此联接以进行联合旋转。 转子和活塞盘也可以通过机器的驱动轴间接地联接。 相对于驱动轴的滑动关节轴向设置在转子和活塞盘之间。