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33 条记录 (耗时 0.02 秒)

    Open center hydraulic system
    11.
    发明申请
    Open center hydraulic system 有权
    开中心液压系统

    公开(公告)号：US20110030363A1

    公开(公告)日：2011-02-10

    申请号：US12536717

    申请日：2009-08-06

    申请人： Richard J. LECH ,  Garrett Anderson ,  Matthew J. Hennemann ,  C. David Anderson

    发明人： Richard J. LECH ,  Garrett Anderson ,  Matthew J. Hennemann ,  C. David Anderson

    IPC分类号： F15B11/16 ,  F15B21/08

    CPC分类号： F15B11/028 ,  F04B49/002 ,  F15B21/082 ,  F15B2211/20553 ,  F15B2211/253 ,  F15B2211/41509 ,  F15B2211/6346 ,  F15B2211/76 ,  F15B2211/85

    摘要： An open center hydraulic system that includes a variable displacement pump having an inlet, an outlet and a sensing port, the pump configured to provide reduced fluid flow in response to a predetermined fluid pressure differential between the outlet and the sensing port. A first fluid circuit and a second fluid circuit each serve as signal lines with the pump sensing port. During operation of the second fluid circuit, reduced fluid flow from the pump outlet is achieved as a result of the sum of induced fluid pressure reductions of respective controlled pressure reduction devices approaching the predetermined pump fluid pressure differential.

    摘要翻译： 一种开放中心液压系统，其包括具有入口，出口和感测端口的可变排量泵，所述泵构造成响应于出口和感测端口之间的预定流体压差而提供减小的流体流量。 第一流体回路和第二流体回路各自用作与泵感测端口的信号线。 在第二流体回路的操作期间，作为接近预定的泵流体压力差的各控制减压装置的致动流体压力降低之和的结果，实现了来自泵出口的减少的流体流量。

    Method of controlling a backhoe
    12.
    发明授权
    Method of controlling a backhoe 有权

    公开(公告)号：US07032332B2

    公开(公告)日：2006-04-25

    申请号：US10443473

    申请日：2003-05-22

    申请人： Eric Sharkness ,  Dennis Heyne ,  Richard J. Lech

    发明人： Eric Sharkness ,  Dennis Heyne ,  Richard J. Lech

    IPC分类号： E02F1/00

    CPC分类号： E02F3/384 ,  E02F9/2207

    摘要： An electronic control for damping oscillation of a swinging backhoe assembly includes a crossover valve that connects the hydraulic lines that supply hydraulic fluid to the boom swing cylinders to each other whenever an electronic controller senses incipient oscillation or swinging of the backhoe assembly. The electronic controller senses such parameters as pressure in the conduits and the position of the operator controls or the position of the boom swing control valve that the operator controls to determine incipient oscillation when the backhoe assembly is stopped. The crossover valve may remain open for a predetermined period of time.

    Hydraulic swing damping system
    13.
    发明授权
    Hydraulic swing damping system 有权
    液压摆动阻尼系统

    公开(公告)号：US06886278B2

    公开(公告)日：2005-05-03

    申请号：US10443309

    申请日：2003-05-22

    申请人： Eric Sharkness ,  Dennis Heyne ,  Richard J. Lech

    发明人： Eric Sharkness ,  Dennis Heyne ,  Richard J. Lech

    IPC分类号： E02F3/38 ,  E02F9/22 ,  E02F5/02 ,  F15B11/08

    CPC分类号： E02F3/384 ,  E02F9/2207

    摘要： An electronic control for damping oscillation of a swinging backhoe assembly includes a crossover valve that connects the hydraulic lines that supply hydraulic fluid to the boom swing cylinders to each other whenever an electronic controller senses incipient oscillation or swinging of the backhoe assembly. The electronic controller senses such parameters as pressure in the conduits and the position of the operator controls or the position of the boom swing control valve that the operator controls to determine incipient oscillation when the backhoe assembly is stopped. The crossover valve may remain open for a predetermined period of time.

    摘要翻译： 一种用于阻尼摆动式反铲组件的振动的电子控制装置包括一个交叉阀，当交叉控制器感测到反铲组件的初始振荡或摆动时，连接将液压流体供应至起重臂摆动缸的液压管路。 电子控制器感测诸如管道中的压力和操作员控制的位置或操作员控制的起重臂摆动控制阀的位置以确定反铲组件停止时初始振荡的参数。 交叉阀可以保持打开预定的时间段。

    Hydraulic circuit providing plural swing rates in an earthworking construction machine
    17.
    发明授权
    Hydraulic circuit providing plural swing rates in an earthworking construction machine 有权
    液压回路在土方施工机械中提供多种摆动率

    公开(公告)号：US06260467B1

    公开(公告)日：2001-07-17

    申请号：US09404183

    申请日：1999-09-24

    申请人： Roger Mickelson ,  Richard J. Lech

    发明人： Roger Mickelson ,  Richard J. Lech

    IPC分类号： F15B1304

    CPC分类号： E02F9/2203 ,  E02F9/2225 ,  F15B11/042 ,  F15B11/055 ,  F15B2211/20553 ,  F15B2211/30505 ,  F15B2211/30525 ,  F15B2211/3111 ,  F15B2211/321 ,  F15B2211/40507 ,  F15B2211/40515 ,  F15B2211/411 ,  F15B2211/41509 ,  F15B2211/423 ,  F15B2211/426 ,  F15B2211/455 ,  F15B2211/6051 ,  F15B2211/615 ,  F15B2211/7053 ,  F15B2211/7128 ,  F15B2211/75

    摘要： A construction machine, e.g., a backhoe, has a chassis and a digging tool mounted for movement, e.g., swinging movement, with respect to such chassis. A machine hydraulic circuit includes a pump, a hydraulic actuator coupled to the tool for tool movement, and a directional valve between the pump and the actuator. In several specific embodiments, the circuit includes first and second flow restrictors coupled between the pump and the actuator. There is also a valve device for selectively disabling the second flow restrictor, thereby configuring the circuit to provide either of two maximum rates of tool movement. In other embodiments, the circuit uses a variable delivery, fluid-pumping power source and a load-sensing line coupled between the pump and the actuator. The valve device is in series with the load-sensing line and includes a restriction-free path and a flow-restricted path therethrough, thereby configuring the circuit to provide either of two maximum rates of tool movement.

    摘要翻译： 建筑机械，例如反铲机具有底盘和挖掘工具，其安装成相对于这种底盘运动，例如摆动运动。 机械液压回路包括泵，联接到工具上用于工具运动的液压致动器，以及在泵和致动器之间的换向阀。 在几个具体实施例中，电路包括耦合在泵和致动器之间的第一和第二限流器。 还有一个用于选择性地禁用第二限流器的阀装置，从而将电路配置为提供两个最大速率的工具运动。 在其他实施例中，电路使用可变输送流体泵浦电源和耦合在泵和致动器之间的负载感测线。 阀装置与负载感测线路串联并且包括无限制的路径和通过其限流的路径，从而将电路配置为提供两个最大速率的刀具运动。

    Hydraulic fluid supply system
    18.
    发明授权
    Hydraulic fluid supply system 失效
    液压油供应​​系统

    公开(公告)号：US6128900A

    公开(公告)日：2000-10-10

    申请号：US14823

    申请日：1998-01-28

    申请人： Richard A. Atkins ,  Richard J. Lech ,  Curtis R. Lyons ,  Michael G. Nahorny ,  Robert T. Peterson ,  Robert E. Wawiorka

    发明人： Richard A. Atkins ,  Richard J. Lech ,  Curtis R. Lyons ,  Michael G. Nahorny ,  Robert T. Peterson ,  Robert E. Wawiorka

    IPC分类号： E02F9/22 ,  F15B11/17 ,  F15B13/044

    CPC分类号： F15B11/17 ,  E02F9/2239 ,  E02F9/2282 ,  F15B2211/20538 ,  F15B2211/20576 ,  F15B2211/30505 ,  F15B2211/3116 ,  F15B2211/40515 ,  F15B2211/40584 ,  F15B2211/426 ,  F15B2211/45 ,  F15B2211/46 ,  F15B2211/473 ,  F15B2211/6346 ,  F15B2211/71

    摘要： A system for supplying an implement with hydraulic fluid includes a first hydraulic pump generating a first flow, a second hydraulic pump generating a second flow and a valve assembly adapted to be coupled to the implement and coupled to the first and second flows. The valve assembly couples the first flow to the implement. The valve assembly also selectively adds the second flow to the first flow to provide a low flow or a high flow. The valve assembly couples the first flow to the implement via a first coupling in response to a first signal and via a second coupling in response to a second signal. The system further includes a manually operable control coupled to the valve assembly and movable between the first position which the first signal is generated, a second position in which the second signal is generated and a third position in which a third signal is generated. The system also includes a foot pedal control coupled to the manually operable control and to the valve assembly. The foot pedal generates the first signal in response to the third signal and actuation of the foot pedal control.

    摘要翻译： 用于向液压流体供应工具的系统包括产生第一流量的第一液压泵，产生第二流量的第二液压泵和适于联接到所述工具并联接到所述第一和第二流量的阀组件。 阀组件将第一流耦合到器具。 阀组件还选择性地将第二流量添加到第一流量以提供低流量或高流量。 阀组件响应于第一信号经由第一耦合将第一流耦合到器具，并响应于第二信号经由第二耦合。 该系统还包括一个手动操作的控制器，其联接到阀门组件，并可在产生第一信号的第一位置和产生第二信号的第二位置和产生第三信号的第三位置之间移动。 该系统还包括联接到手动操作的控制和阀组件的踏板控制。 脚踏板响应于第三信号和脚踏板控制的致动而产生第一信号。

    Creeper drive system
    19.
    发明授权
    Creeper drive system 失效
    爬坡驱动系统

    公开(公告)号：US5678469A

    公开(公告)日：1997-10-21

    申请号：US560042

    申请日：1995-11-17

    申请人： Richard J. Lech

    发明人： Richard J. Lech

    IPC分类号： B60K6/00 ,  B60K26/00 ,  F16H61/40 ,  F16H61/4035 ,  F15B11/042 ,  F15B11/16

    CPC分类号： F16H61/40 ,  B60K6/00 ,  F16H61/4035 ,  B60K26/00 ,  Y10S903/902 ,  Y10T74/19037 ,  Y10T74/19158

    摘要： A new creeper drive system has a hydraulic motor with first and second flow lines connected thereto. A directional valve apparatus is connected in the flow lines and the system has a flow control valve operable independently of the directional valve apparatus. The creeper drive system is particularly useful on a mobile construction machine. The machine hydraulic circuit needs but a single pump for powering the creeper drive motor and an auxiliary attachment motor and creeper direction and speed functions are independently adjustable.

    摘要翻译： 新的爬行器驱动系统具有液压马达，其中连接有第一和第二流动管线。 一个方向阀装置连接在流动管线中，该系统具有可独立于方向阀装置操作的流量控制阀。 爬行器驱动系统在移动式建筑机器上特别有用。 机器液压回路需要单个泵，用于为爬坡驱动电机供电，辅助安装电机和爬行方向和速度功能可独立调节。

    Combined fixed and variable displacement pump system
    20.
    发明授权
    Combined fixed and variable displacement pump system 失效
    组合固定和可变排量泵系统

    公开(公告)号：US3985472A

    公开(公告)日：1976-10-12

    申请号：US570970

    申请日：1975-04-23

    申请人： Eugene P. Virtue ,  Richard J. Lech

    发明人： Eugene P. Virtue ,  Richard J. Lech

    IPC分类号： F04C11/00 ,  F04B1/26 ,  F04B49/00 ,  F04B49/08 ,  F04B49/24 ,  F04B23/04

    CPC分类号： F04B49/007 ,  F04B49/08 ,  F04B49/24

    摘要： A hydraulic pump arrangement and control circuit for supplying fluid at high volume and a high pressure to a work circuit. The system utilizes a fixed displacement pump, a variable displacement pump, a dual pressure compensator, and an unloading valve working together to provide high pressure fluid delivery while reducing the horsepower requirements of the fixed displacement pump and the variable displacement pump. High flow is provided through the utilization of the combined pumps and high pressure is attained through the unloading of the fixed displacement pump through the unloading valve and destroking of the variable displacement pump in response to signals provided by the dual pressure compensator.

    摘要翻译： 一种液压泵装置和控制电路，用于向工作回路提供高容量和高压的流体。 该系统采用固定排量泵，可变排量泵，双压力补偿器和卸载阀一起工作，以提供高压流体输送，同时降低固定排量泵和可变排量泵的功率要求。 通过利用组合的泵提供高流量，并且通过卸载固定排量的泵并且响应于由双重压力补偿器提供的信号而破坏可变排量泵而获得高压。