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    HYDRAULIC DRIVE SYSTEM
    42.
    发明申请
    HYDRAULIC DRIVE SYSTEM 有权
    液压驱动系统

    公开(公告)号：US20140130487A1

    公开(公告)日：2014-05-15

    申请号：US14129387

    申请日：2012-08-13

    Applicant: Teruo Akiyama ,  Noboru Iida ,  Koji Saito ,  Takayuki Watanabe ,  Koji Yamashita

    Inventor： Teruo Akiyama ,  Noboru Iida ,  Koji Saito ,  Takayuki Watanabe ,  Koji Yamashita

    IPC: F15B11/042 ,  F15B11/04 ,  E02F9/22

    CPC classification number: F15B11/0423 ,  E02F9/2217 ,  E02F9/2228 ,  E02F9/2232 ,  E02F9/2285 ,  E02F9/2289 ,  E02F9/2292 ,  E02F9/2296 ,  F15B11/0413 ,  F15B2211/20546 ,  F15B2211/20561 ,  F15B2211/20576 ,  F15B2211/27 ,  F15B2211/613 ,  F15B2211/633 ,  F15B2211/6346 ,  F15B2211/7053 ,  F15B2211/785

    Abstract: A hydraulic driving system includes a hydraulic pump, a driving source, a hydraulic cylinder, a closed circuit hydraulic path between the pump and cylinder, a pump-flow-rate control unit controlling a discharge flow rate of the pump, a flow rate control valve between the pump and the cylinder in the fluid path, a directional control unit, a target flow rate setting unit and a control device. The directional control unit allows a flow of fluid from the pump to the cylinder and prohibits a flow of fluid from the cylinder to the pump when fluid is supplied from the pump to the cylinder via the flow rate control valve. The control device controls fluid flow to the cylinder with the flow rate control valve when the target flow rate is within a prescribed range, and with the pump-flow-rate control unit when the target flow rate is greater than the prescribed range.

    Abstract translation: 液压驱动系统包括液压泵，驱动源，液压缸，泵和缸之间的闭路液压路径，控制泵的排出流量的泵流量控制单元，流量控制阀 在流体路径中的泵和缸之间，方向控制单元，目标流量设定单元和控制装置。 方向控制单元允许流体从泵到气缸流动，并且当流体经由流量控制阀从泵供应到气缸时，阻止流体从气缸流到泵。 当目标流量在规定范围内时，控制装置利用流量控制阀，当目标流量大于规定范围时，利用泵流量控制单元来控制流向缸的流体。

    Hydraulic cylinder
    43.
    发明授权
    Hydraulic cylinder 失效
    液压缸

    公开(公告)号：US07171888B2

    公开(公告)日：2007-02-06

    申请号：US11148514

    申请日：2005-06-09

    Applicant: Martin Boecker

    Inventor： Martin Boecker

    IPC: F15B15/22

    CPC classification number: F15B11/0413 ,  F15B15/222 ,  F15B15/224

    Abstract: A hydraulic cylinder comprising a cylinder, a piston which is adjustable in the cylinder, and at least one pressure connection which is disposed in the vicinity of an end position of the piston and through which a pressure fluid can be introduced into the cylinder, is characterized in that the piston is provided with a valve element which can cooperate with the pressure connection, in order to cover the pressure connection when the piston approaches its end position, and in order to uncover the pressure connection when pressure fluid is introduced into the cylinder.

    Abstract translation: 一种液压缸，包括一个气缸，一个可在气缸中调节的活塞，以及至少一个压力连接件，该压力连接件设置在活塞端部附近，压力流体可以通过该压力连接件被引入气缸中。 因为活塞设置有可与压力连接配合的阀元件，以便当活塞接近其端部位置时覆盖压力连接，并且当压力流体被引入气缸时露出压力连接。

    Valve arrangement in a hydraulic circuit, use of the same and arrangement for controlling a hydraulic vehicle drive
    44.
    发明授权
    Valve arrangement in a hydraulic circuit, use of the same and arrangement for controlling a hydraulic vehicle drive 失效
    液压回路中的阀门布置，使用相同的装置和用于控制液压车辆驱动的装置

    公开(公告)号：US07121297B2

    公开(公告)日：2006-10-17

    申请号：US11060837

    申请日：2005-02-18

    Applicant: Reinhardt Thoms

    Inventor： Reinhardt Thoms

    IPC: F16K31/36

    CPC classification number: F16K31/1225 ,  F15B11/0413 ,  F15B13/024 ,  F16K17/196 ,  F16K17/30 ,  F16K31/1245 ,  Y10T137/7764 ,  Y10T137/7768 ,  Y10T137/7778

    Abstract: Arranged in a hydraulic circuit is a valve with an L-shaped duct arrangement, which is formed by a transverse duct 2 and a longitudinal duct 3. Formed in extension of the longitudinal duct 3 is a holding and guiding bore 4, in which a throttling element, comprising a throttle slide 10 and a valve piston 21 that can be displaced therein, can be displaced longitudinally. The valve piston 21 has a passage hole 25, which is connected to the interior of the throttling element and two proportionate annular chambers 17a and 17b. Of these, the proportionate annular chamber 17b is connected to a pilot control valve via a control duct 19. Depending on the direction and pressure of the hydraulic fluid flowing through the L-shaped duct arrangement, the throttling element is moved in or out and extended or compressed in the process. In this way, the valve arrangement acts as a throttling valve in the event of flow in the direction from the transverse duct 2 to the longitudinal duct 3, while the flow in the opposite flow direction is not throttled.

    Abstract translation: 安装在液压回路中的是具有L形管道装置的阀，其由横向管道2和纵向管道3形成。 在纵向导管3的延伸部上形成有保持引导孔4，其中包括节流滑块10和可在其中移位的阀活塞21的节流元件可纵向移位。 阀活塞21具有通道孔25，该通道孔25连接到节流元件的内部和两个成比例的环形室17a和17b。 其中，比例环形室17b通过控制管道19连接到先导控制阀。 根据流经L形管道装置的液压流体的方向和压力，节流元件在该过程中移入或移出并延伸或压缩。 以这种方式，在从横向管道2到纵向管道3的方向上流动的情况下，阀装置用作节流阀，而在相反的流动方向上的流动不被节流。

    Hydraulic cylinder
    46.
    发明申请
    Hydraulic cylinder 失效
    液压缸

    公开(公告)号：US20050226750A1

    公开(公告)日：2005-10-13

    申请号：US11148514

    申请日：2005-06-09

    Applicant: Martin Boecker

    Inventor： Martin Boecker

    IPC: F15B11/04 ,  F15B15/22 ,  F04B17/00 ,  F04B35/04

    CPC classification number: F15B11/0413 ,  F15B15/222 ,  F15B15/224

    Abstract: A hydraulic cylinder comprising a cylinder, a piston which is adjustable in the cylinder, and at least one pressure connection which is disposed in the vicinity of an end position of the piston and through which a pressure fluid can be introduced into the cylinder, is characterized in that the piston is provided with a valve element which can cooperate with the pressure connection, in order to cover the pressure connection when the piston approaches its end position, and in order to uncover the pressure connection when pressure fluid is introduced into the cylinder.

    Abstract translation: 一种液压缸，包括一个气缸，一个可在气缸中调节的活塞，以及至少一个压力连接件，该压力连接件设置在活塞端部附近，压力流体可以通过该压力连接件被引入气缸中。 因为活塞设置有可与压力连接配合的阀元件，以便当活塞接近其端部位置时覆盖压力连接，并且当压力流体被引入气缸时露出压力连接。

    Valve arrangement in a hydraulic circuit, use of the same and arrangement for controlling a hydraulic vehicle drive
    47.
    发明申请
    Valve arrangement in a hydraulic circuit, use of the same and arrangement for controlling a hydraulic vehicle drive 失效
    液压回路中的阀门布置，使用相同的装置和用于控制液压车辆驱动的装置

    公开(公告)号：US20050211302A1

    公开(公告)日：2005-09-29

    申请号：US11060837

    申请日：2005-02-18

    Applicant: Reinhardt Thoms

    Inventor： Reinhardt Thoms

    IPC: F15B13/02 ,  F15B21/00 ,  F16K3/26 ,  G05D16/16

    CPC classification number: F16K31/1225 ,  F15B11/0413 ,  F15B13/024 ,  F16K17/196 ,  F16K17/30 ,  F16K31/1245 ,  Y10T137/7764 ,  Y10T137/7768 ,  Y10T137/7778

    Abstract: Arranged in a hydraulic circuit is a valve with an L-shaped duct arrangement, which is formed by a transverse duct 2 and a longitudinal duct 3. Formed in extension of the longitudinal duct 3 is a holding and guiding bore 4, in which a throttling element, comprising a throttle slide 10 and a valve piston 21 that can be displaced therein, can be displaced longitudinally. The valve piston 21 has a passage hole 25, which is connected to the interior of the throttling element and two proportionate annular chambers 17a and 17b. Of these, the proportionate annular chamber 17b is connected to a pilot control valve via a control duct 19. Depending on the direction and pressure of the hydraulic fluid flowing through the L-shaped duct arrangement, the throttling element is moved in or out and extended or compressed in the process. In this way, the valve arrangement acts as a throttling valve in the event of flow in the direction from the transverse duct 2 to the longitudinal duct 3, while the flow in the opposite flow direction is not throttled.

    Abstract translation: 安装在液压回路中的是具有L形管道装置的阀，其由横向管道2和纵向管道3形成。纵向管道3延伸形成有保持和引导孔4，其中节流 包括可以在其中移动的节气门滑块10和阀活塞21的元件可以纵向移位。 阀活塞21具有通道孔25，该通道孔25连接到节流元件的内部和两个成比例的环形室17a和17b。 其中，比例环形室17b通过控制管道19连接到先导控制阀。根据流经L形管道装置的液压流体的方向和压力，节流元件移入或移出， 在此过程中扩展或压缩。 以这种方式，在从横向管道2到纵向管道3的方向上流动的情况下，阀装置用作节流阀，而在相反的流动方向上的流动不被节流。

    Cylinder with speed control mechanism
    48.
    发明授权
    Cylinder with speed control mechanism 失效
    气缸带调速机构

    公开(公告)号：US6000314A

    公开(公告)日：1999-12-14

    申请号：US149811

    申请日：1998-09-08

    Applicant: Mitsuo Masuda ,  Hiroyuki Shimono

    Inventor： Mitsuo Masuda ,  Hiroyuki Shimono

    IPC: F15B11/04 ,  F15B15/08 ,  F15B15/22

    CPC classification number: F15B15/223 ,  F15B11/0413 ,  F15B15/086

    Abstract: A cylinder with a speed control mechanism wherein in a transfer stroke, a piston is smoothly accelerated or smoothly decelerated at an initiation or termination end of the stroke by controlling the speed of the piston, whereas in a return stroke, the speed of the piston is not controlled, thereby reducing the time required for the return stroke. A bypass passage bypassing longitudinal grooves for flow control provided on a cushion ring (74) is formed in a passage which provides communication between the outside and a main passage or a cylinder chamber (71, 72). A check valve (78A, 78B) is disposed in the bypass passage to allow a fluid to flow through the bypass passage only during the return stroke of the piston (6).

    Abstract translation: 具有速度控制机构的气缸，其中在传送行程中，通过控制活塞的速度，活塞在行程的起始或终止端处平稳地加速或平稳地减速，而在返回行程中，活塞的速度为 不受控制，从而减少返回行程所需的时间。 旁路通路设置在缓冲环（74）上的用于流动控制的纵向槽，形成在提供外部与主通道或气缸室（71,72）之间的连通的通道中。 止回阀（78A，78B）设置在旁通通道中，以允许流体仅在活塞（6）的返回行程期间流过旁路通道。

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