Acceleration sensor calibrated hoist positioning
    41.
    发明授权
    Acceleration sensor calibrated hoist positioning 有权
    加速度传感器校准起重机定位

    公开(公告)号:US07958970B2

    公开(公告)日:2011-06-14

    申请号:US12553091

    申请日:2009-09-02

    IPC分类号: B66B3/02

    摘要: A hoist positioning system includes an accelerometer attached to a hoist, a control unit for processing signals from the accelerometer and comparing the processed signals with reference data to determine a position of the hoist, a drive system for moving the hoist up and down, and a relay that is switched ON and OFF by a control signal from the control unit. When the relay is switched ON, power is supplied to the drive system from a high-voltage power source and the hoist is driven up or down. When the relay is switched OFF, power from the high-voltage power source to the drive system is cut off and the hoist stops moving up or down.

    摘要翻译: 一种起重机定位系统,包括附接到起重机的加速度计,用于处理来自加速度计的信号并将处理后的信号与参考数据进行比较的控制单元,以确定起重机的位置,用于上下移动升降机的驱动系统,以及 通过来自控制单元的控制信号接通和断开的继电器。 当继电器接通时,从高压电源向驱动系统供电,升降机向上或向下驱动。 当继电器关闭时,高压电源到驱动系统的电源被切断,起重机停止上下移动。

    Bidirectional force feedback poppet valve
    42.
    发明申请
    Bidirectional force feedback poppet valve 有权
    双向力反馈提升阀

    公开(公告)号:US20070290153A1

    公开(公告)日:2007-12-20

    申请号:US11454500

    申请日:2006-06-16

    IPC分类号: F16K31/12

    CPC分类号: F16K31/406

    摘要: A valve has a valve body including a main chamber having a first port and a second port, and a main poppet disposed within the main chamber. The main poppet includes a first surface forming a control chamber within the main chamber. The valve has a first passage communicating the control chamber with the first port, and a second passage communicating the control chamber with the second port. The valve also includes a pilot valve having a pilot poppet for controlling fluid flow from the control chamber to the first port through a third passage, and to the second port through a fourth passage, respectively. The valve may further have a feedback spring coupled between the main poppet and the pilot poppet to provide a force relative to a distance between the main poppet and the pilot poppet.

    摘要翻译: 阀具有阀体,该阀体包括具有第一端口和第二端口的主室,以及设置在主室内的主提升阀。 主提升阀包括在主室内形成控制室的第一表面。 阀具有使控制室与第一端口连通的第一通道和将控制室与第二端口连通的第二通道。 该阀还包括一个先导阀,它具有一个先导提升阀,用于控制通过第三个通道从控制室流向第一个端口的流体,并分别通过第四个通道到达第二个通道。 阀可以进一步具有联接在主提升阀和先导提升阀之间的反馈弹簧,以提供相对于主提升阀和先导提升阀之间的距离的力。

    Hydraulic system having a pressure compensator
    43.
    发明授权
    Hydraulic system having a pressure compensator 有权
    具有压力补偿器的液压系统

    公开(公告)号:US07204084B2

    公开(公告)日:2007-04-17

    申请号:US10975413

    申请日:2004-10-29

    申请人: Pengfei Ma Jiao Zhang

    发明人: Pengfei Ma Jiao Zhang

    IPC分类号: F15B13/04 F15B13/08

    摘要: A hydraulic system for a work machine is disclosed. The hydraulic system has a source of pressurized fluid and a fluid actuator with a first chamber and a second chamber. The hydraulic system also has a first valve configured to selectively fluidly communicate the source with the first chamber and a second valve configured to selectively fluidly communicate the source with the second chamber. The hydraulic system further has a proportional pressure compensating valve configured to control a pressure of a fluid directed between the source and the first and second valves.

    摘要翻译: 公开了一种用于作业机械的液压系统。 液压系统具有加压流体源和具有第一室和第二室的流体致动器。 液压系统还具有构造成选择性地将源与第一室流体连通的第一阀和被配置为选择性地将源与第二室流体连通的第二阀。 液压系统还具有比例压力补偿阀,其被配置为控制在源和第一和第二阀之间引导的流体的压力。

    Hydraulic system having a pressure compensator
    44.
    发明申请
    Hydraulic system having a pressure compensator 有权
    具有压力补偿器的液压系统

    公开(公告)号:US20060090460A1

    公开(公告)日:2006-05-04

    申请号:US10975413

    申请日:2004-10-29

    申请人: Pengfei Ma Jiao Zhang

    发明人: Pengfei Ma Jiao Zhang

    IPC分类号: F16D31/02

    摘要: A hydraulic system for a work machine is disclosed. The hydraulic system has a source of pressurized fluid and a fluid actuator with a first chamber and a second chamber. The hydraulic system also has a first valve configured to selectively fluidly communicate the source with the first chamber and a second valve configured to selectively fluidly communicate the source with the second chamber. The hydraulic system further has a proportional pressure compensating valve configured to control a pressure of a fluid directed between the source and the first and second valves.

    摘要翻译: 公开了一种用于作业机械的液压系统。 液压系统具有加压流体源和具有第一室和第二室的流体致动器。 液压系统还具有构造成选择性地将源与第一室流体连通的第一阀和被配置为选择性地将源与第二室流体连通的第二阀。 液压系统还具有比例压力补偿阀,其被配置为控制在源和第一和第二阀之间引导的流体的压力。

    Flow-control apparatus for controlling the swing speed of a boom assembly
    45.
    发明申请
    Flow-control apparatus for controlling the swing speed of a boom assembly 审中-公开
    用于控制吊杆组件的摆动速度的流量控制装置

    公开(公告)号:US20050081518A1

    公开(公告)日:2005-04-21

    申请号:US10689371

    申请日:2003-10-20

    摘要: A fluid flow-control apparatus for a swing system of a work machine. The system includes a source of variable pressurized fluid, directional flow device coupled to said source of pressurized fluid, said directional flow device having a directional flow member, a flow-compensation device coupled to said directional flow device, a fluid flow-biasing device coupled to said flow-compensation device, and a plurality of motors coupled to said directional flow device.

    摘要翻译: 一种用于作业机的摆动系统的流体流量控制装置。 该系统包括可变加压流体源,耦合到所述加压流体源的定向流动装置,所述定向流动装置具有定向流动构件,耦合到所述方向流动装置的流量补偿装置,流体流动偏置装置 到所述流量补偿装置,以及耦合到所述定向流动装置的多个马达。

    Hydraulic control system having energy recovery
    47.
    发明授权
    Hydraulic control system having energy recovery 有权
    具有能量回收的液压控制系统

    公开(公告)号:US08997479B2

    公开(公告)日:2015-04-07

    申请号:US13458701

    申请日:2012-04-27

    IPC分类号: F15B11/02 E02F9/22 F15B11/024

    摘要: A hydraulic control system is disclosed for use with a machine. The hydraulic control system may have a pump, a tank, and an actuator. The hydraulic control system may also have at least a first valve configured to control fluid flow between the pump, the tank, a first chamber of the actuator, and a second chamber of the actuator; a second valve fluidly disposed between the second chamber and the tank; and a third valve fluidly disposed between the first and second chambers. The hydraulic control system may further have a controller configured to selectively cause the second valve to block fluid flow from the second chamber of the actuator to the tank, and to selectively cause the third valve to fluidly communicate the first and second chambers of the actuator when the second valve blocks fluid flow from the second chamber of the actuator to the tank.

    摘要翻译: 公开了一种用于机器的液压控制系统。 液压控制系统可以具有泵,罐和致动器。 液压控制系统还可以具有至少第一阀,其构造成控制泵,罐,致动器的第一室和致动器的第二室之间的流体流动; 流体地设置在所述第二室和所述罐之间的第二阀; 以及流体地设置在所述第一和第二室之间的第三阀。 液压控制系统还可以具有控制器,该控制器被配置为选择性地使第二阀阻挡流体从致动器的第二室流向罐,并且当第一阀和第二阀门的第一和第二腔室进行流体连通时, 第二阀阻止流体从致动器的第二腔流向罐。

    HYDRAULIC CONTROL SYSTEM HAVING ENERGY RECOVERY
    50.
    发明申请
    HYDRAULIC CONTROL SYSTEM HAVING ENERGY RECOVERY 有权
    具有能源回收的液压控制系统

    公开(公告)号:US20130283777A1

    公开(公告)日:2013-10-31

    申请号:US13458701

    申请日:2012-04-27

    IPC分类号: F16D31/02

    摘要: A hydraulic control system is disclosed for use with a machine. The hydraulic control system may have a pump, a tank, and an actuator. The hydraulic control system may also have at least a first valve configured to control fluid flow between the pump, the tank, a first chamber of the actuator, and a second chamber of the actuator; a second valve fluidly disposed between the second chamber and the tank; and a third valve fluidly disposed between the first and second chambers. The hydraulic control system may further have a controller configured to selectively cause the second valve to block fluid flow from the second chamber of the actuator to the tank, and to selectively cause the third valve to fluidly communicate the first and second chambers of the actuator when the second valve blocks fluid flow from the second chamber of the actuator to the tank.

    摘要翻译: 公开了一种用于机器的液压控制系统。 液压控制系统可以具有泵,罐和致动器。 液压控制系统还可以具有至少第一阀,其构造成控制泵,罐,致动器的第一室和致动器的第二室之间的流体流动; 流体地设置在所述第二室和所述罐之间的第二阀; 以及流体地设置在所述第一和第二室之间的第三阀。 液压控制系统还可以具有控制器,该控制器被配置为选择性地使第二阀阻挡流体从致动器的第二室流向罐,并且当第一阀和第二阀门的第一和第二腔室进行流体连通时, 第二阀阻止流体从致动器的第二腔流向罐。