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68 条记录 (耗时 0.014 秒)

    Holddown system for an axial piston pump
    1.
    发明授权
    Holddown system for an axial piston pump 有权
    轴向活塞泵压紧系统

    公开(公告)号：US09482212B1

    公开(公告)日：2016-11-01

    申请号：US14096648

    申请日：2013-12-04

    申请人： Hartmann Controls, Inc.

    发明人： Donald G. Bethke

    IPC分类号： F04B1/20 ,  F04B1/12 ,  F04B39/00

    CPC分类号： F04B1/2007 ,  F04B1/126 ,  F04B1/20 ,  F04B1/2078 ,  F04B1/2085 ,  F04B1/324 ,  F04B39/0027

    摘要： An axial piston pump includes a housing with a cover plate assembly, a rotor with reciprocable pistons rotatably mounted with a drive shaft and a swashplate assembly tiltably mounted relative to the drive shaft and engaged with outer ends of the pistons. A holddown spring is incorporated within the swashplate assembly and positioned outside the rotor such that the holddown spring tilts with the swashplate assembly and does not rotate with the drive shaft. The holddown spring applies a force holding the piston outer ends against the swashplate assembly and the rotor against the cover plate assembly.

    摘要翻译： 轴向活塞泵包括具有盖板组件的壳体，具有可旋转地安装有驱动轴的可往复运动的活塞的转子和相对于驱动轴可倾斜地安装并与活塞的外端接合的斜盘组件。 压紧弹簧被并入旋转斜盘组件内并且定位在转子外部，使得压紧弹簧与斜盘组件倾斜并且不与驱动轴一起旋转。 压紧弹簧施加将活塞外端保持抵靠旋转斜盘组件和转子抵靠盖板组件的力。

    Reciprocating cylinder swash plate pump
    2.
    发明申请
    Reciprocating cylinder swash plate pump 有权
    往复式旋转斜盘泵

    公开(公告)号：US20060222516A1

    公开(公告)日：2006-10-05

    申请号：US11355031

    申请日：2006-02-15

    申请人： Peter Achten

    发明人： Peter Achten

    IPC分类号： F04B27/08

    CPC分类号： F01B3/0038 ,  F01B3/0041 ,  F01B3/0047 ,  F01B3/0055 ,  F04B1/2007

    摘要： The invention relates to a hydraulic device having, in a housing, a rotor, which can rotate about a first axis, with pistons and chambers on both sides of the rotor, which can rotate about a second axis and are formed by a cylindrical wall and a piston. The cylindrical walls are rotatable about a second axis (m1 and m2) and the first axis, such that, during rotation of the rotor, the volumes of the rotor chambers on one side of the rotor and the rotor chambers on the other side of the rotor alternatively have a minimum value.

    摘要翻译： 本发明涉及一种液压装置，其在壳体中具有可绕第一轴线旋转的转子，其中可在转子两侧的活塞和腔室围绕第二轴线旋转并且由圆柱形壁形成， 活塞 圆柱形壁可围绕第二轴线（m 1和m 2）和第一轴线旋转，使得在转子旋转期间，转子室的体积 在转子的一侧和转子的另一侧的转子室交替地具有最小值。

    Lift off cylinder for axial piston hydraulic pump
    3.
    发明申请
    Lift off cylinder for axial piston hydraulic pump 审中-公开

    公开(公告)号：US20030180157A1

    公开(公告)日：2003-09-25

    申请号：US10347903

    申请日：2003-01-21

    发明人： Allan Rush

    IPC分类号： F04B001/12

    CPC分类号： B60K6/12 ,  F03C1/0607 ,  F03C1/0644 ,  F04B1/128 ,  F04B1/2007 ,  F04B1/2014 ,  Y02T10/6208

    摘要： A positive displacement hydraulic pump/motor assembly (1) includes a rotary cylinder block (3) having a central axis (5) and a generally circular array of cylinders (6) disposed in parallel relationship around the axis. A corresponding plurality of axial pistons (10) is reciprocably disposed within the respective cylinders. A drive shaft (12) effects rotation of the cylinder block about the central axis and a drive plate (15) is disposed at one end of the cylinder block (3) to effect sequentially staggered reciprocation of the pistons (10) in response to rotation of the cylinder block. A stationary valve plate (20) is disposed at an opposite end of the cylinder block. The valve plate (20) includes a valve face (21) adapted for sliding rotational engagement with a complementary mating face (22) formed on the cylinder block. The valve plate further includes at least one inlet port (24) adapted for fluid communication with a source of hydraulic fluid and at least one outlet port (26) adapted for fluid communication with an hydraulic load. The ports (24, 26) are disposed such that in use, hydraulic fluid is progressively drawn into the cylinders in sequence as the respective pistons are displaced away from the valve plate and subsequently expelled from the cylinders as the pistons are progressively displaced toward the valve plate. The pump/motor assembly further includes lift-off means in the form of an hydraulic lift-off piston (40) and cylinder (41), selectively operable to displace the cylinder block marginally away from the valve plate, thereby to minimise rotational resistance between the respective mating valve faces (21, 22) under predetermined operational conditions. The pump/motor assembly is adapted for incorporation into an energy management system operable in a driving mode, a braking mode and a neutral motor to provide supplementary drive from regenerative braking in a vehicle.

    Quiet hydraulic apparatus
    4.
    发明授权
    Quiet hydraulic apparatus 失效
    安静的液压设备

    公开(公告)号：US4624175A

    公开(公告)日：1986-11-25

    申请号：US770097

    申请日：1985-08-28

    申请人： Gunnar A. Wahlmark

    发明人： Gunnar A. Wahlmark

    IPC分类号： F01B3/00 ,  F04B1/20 ,  F04B1/22 ,  F01B13/04 ,  F04B1/30

    CPC分类号： F04B1/2007 ,  F01B3/0047 ,  F04B1/22

    摘要： The hydraulic apparatus may either be a quiet hydrostatic drive with an axial piston pump and an axial piston motor or may be a quiet pump unit formed by two axial piston pumps. In either case, the apparatus includes two rotatable cylinder blocks disposed on opposite sides of a rotationally stationary valve block and tied together by a rod which transmits forces between the two cylinder blocks so that any force tending to unseat one cylinder block from the valve block tends to seat the other cylinder block against the valve block. A resiliently yieldable sealing ring on one end portion of the rod defines a pressure chamber which receives oil at working pressure to automatically increase and decrease the axial clearance between the cylinder blocks and the valve block as the working pressure increases and decreases, respectively.

    摘要翻译： 液压设备可以是具有轴向活塞泵和轴向活塞马达的静音静液压驱动器，或者可以是由两个轴向柱塞泵形成的安静的泵单元。 在任一种情况下，该装置包括设置在旋转固定的阀块的相对侧上的两个可旋转气缸体，并通过杆连接在一起，该杆在两个气缸体之间传递力，使得任何倾向于将一个汽缸体从阀块上移开的力趋于 将另一个气缸体安置在阀座上。 杆的一端部上的弹性可屈服的密封环限定了压力室，其在工作压力下接收油，以分别随着工作压力的增加和减小而自动增加和减小气缸体与阀块之间的轴向间隙。

    Hydrostatic machine valve biasing system
    5.
    发明授权
    Hydrostatic machine valve biasing system 失效
    液压机阀门偏心系统

    公开(公告)号：US3810715A

    公开(公告)日：1974-05-14

    申请号：US27844372

    申请日：1972-08-07

    申请人： GEN MOTORS CORP

    发明人： WEEK N ,  SHELLMAN C ,  KOIVUNEN E

    IPC分类号： F04B1/20 ,  F04B1/32 ,  F04B49/00

    CPC分类号： F04B1/324 ,  F04B1/20 ,  F04B1/2007

    摘要： A hydrostatic pump or motor unit having a rotating cylinder biased into contact with a valve surface in proportion to separating forces to maintain sealing contact without excessive pressure. In an axial piston type hydrostatic unit, the rotating cylinder block engaging a fixed annular valve plate and the swash plate reciprocate the pistons in the cylinders to deliver fluid from the cylinders through the valve plate. A biasing motor between the cylinder block and a member axially fixed relative to the valve plate and a control system to provide a biasing control pressure provides a biasing force varying as a function of the separating force between the valve plate and cylinder block. In one arrangement the biasing motor has an internal cylindrical surface on the cylinder block and an external cylindrical surface on a fixed portion of the housing with a pair of annular pistons therebetween, one engaging in abutment on the cylinder block and the other engaging in abutment on the fixed housing portion to form a motor chamber supplied with biasing control pressure fluid to provide an auxiliary bias proportional to this pressure. In another arrangement the inner cylindrical surface is formed on the shaft rotating with the cylinder block. The biasing control system in one modification provides a biasing pressure proportional to speed and in another modification proportional to speed, power system pressure and displacement. A one or two step speed governor is mounted in the cylinder block.

    摘要翻译： 一种静液压泵或电动机单元，其具有与分离力成比例地与阀表面接触的旋转气缸，以保持密封接触而没有过大的压力。 在轴向活塞型静液压单元中，与固定环形阀板和旋转斜盘接合的旋转气缸体使气缸中的活塞往复运动，以将液体从气缸输送通过阀板。 气缸体和相对于阀板轴向固定的构件之间的偏压马达和用于提供偏压控制压力的控制系统提供作为阀板和气缸体之间的分离力的函数而变化的偏压力。 在一种布置中，偏置马达在气缸体上具有内部圆柱形表面，在壳体的固定部分上具有一个外部圆柱形表面，其间具有一对环形活塞，一个接合在气缸体上，另一个接合在基座 所述固定壳体部分形成电动机室，所述电动机室供应有偏压控制压力流体，以提供与该压力成比例的辅助偏压。 在另一种布置中，内圆柱形表面形成在与气缸体一起旋转的轴上。 一个修改中的偏压控制系统提供与速度成比例的偏压，并且与速度，动力系统压力和位移成比例的另一种修改。 一个或两步调速器安装在气缸体中。