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    HYDRAULIC CONTROL SYSTEM
    1.
    发明申请
    HYDRAULIC CONTROL SYSTEM 审中-公开
    液压控制系统

    公开(公告)号：US20150075148A1

    公开(公告)日：2015-03-19

    申请号：US14236905

    申请日：2012-05-18

    申请人： Kenpei Yamaji

    发明人： Kenpei Yamaji

    IPC分类号： F15B9/04 ,  E02F9/22 ,  F15B13/04 ,  F15B13/06 ,  F15B13/01 ,  F15B13/044

    CPC分类号： F15B9/04 ,  E02F9/2235 ,  E02F9/2296 ,  F04B49/06 ,  F04B2205/05 ,  F15B11/02 ,  F15B13/01 ,  F15B13/0401 ,  F15B13/044 ,  F15B13/06 ,  F15B2211/20546 ,  F15B2211/3111 ,  F15B2211/6309 ,  F15B2211/6652 ,  F15B2211/6653 ,  F15B2211/6654 ,  F15B2211/6655 ,  F15B2211/6656 ,  F15B2211/6658

    摘要： A hydraulic control system is provided in which hydraulic oil discharged from a variable displacement hydraulic pump is controlled and supplied to a hydraulic actuator by a closed center control valve activated based on operation input from an operation device, thereby controlling activation of the hydraulic actuator. With the pump displacement detected by pump displacement detecting means and the pump output pressure detected by pump output pressure detecting means being used as feedback input and the characteristic value determined by the operation input and the feedback input being used as a target value of a control loop, variable displacement control is performed by a controller provided with a horsepower control loop, a pressure control loop, a flow rate control loop, and a minimum pressure holding loop that feed back a calculated value based on the feedback input or the feedback input itself.

    摘要翻译： 提供了一种液压控制系统，其中从可变容量液压泵排出的液压油通过基于来自操作装置的操作输入而被启动的闭合中心控制阀被控制并提供给液压致动器，从而控制液压致动器的启动。 利用泵位移检测装置检测到的泵排量和由泵输出压力检测装置检测的泵输出压力用作反馈输入，并且将由操作输入和反馈输入确定的特征值用作控制回路的目标值 可变排量控制由具有马力控制回路，压力控制回路，流量控制回路以及基于反馈输入或反馈输入本身反馈计算值的最小压力保持回路的控制器执行。

    Motor operated servo pump
    3.
    发明授权
    Motor operated servo pump 失效
    电机操作伺服泵

    公开(公告)号：US3646754A

    公开(公告)日：1972-03-07

    申请号：US3646754D

    申请日：1970-05-22

    申请人： LTV ELECTROSYSTEMS INC

    发明人： KOCH WERNER G ,  MARCHELL ROBERT H ,  REDMOND WILLIAM G

    IPC分类号： F15B9/03 ,  F15B9/04 ,  F15B15/18

    CPC分类号： F15B9/04 ,  F15B9/03 ,  Y10S60/911

    摘要： A power actuator in a hydraulic system is controlled in accordance with an electronic control signal energizing a variable displacement servo pump interconnected to the power actuator. In the hydraulic system, the variable displacement servo pump includes a swash plate directly coupled to and positioned by an electric motor. A transducer responds to the position of the swash plate and generates a feedback signal to balance out the effect of the electronic control signal. A pressurized reservoir supplies a base pressure to the hydraulic system when the swash plate of the variable displacement servo pump is in a neutral or null position. This reservoir is protected against an over pressure by a check valve. To compensate for unequal chamber volumes in the power actuator, a shuttle valve diverts excess fluid from the larger volume chamber to the reservoir.

    摘要翻译： 液压系统中的动力执行器根据电动控制信号进行控制，电子控制信号激励与功率致动器互连的可变排量伺服泵。 在液压系统中，可变排量伺服泵包括直接联接到电动机并由电动机定位的斜盘。 传感器响应于斜盘的位置并产生反馈信号以平衡电子控制信号的影响。 当可变排量伺服泵的斜盘处于中性或零位置时，加压的储存器向液压系统提供基础压力。 该储存器通过止回阀防止过压。 为了补偿动力执行器中的不相等的室体积，梭阀将多余的流体从较大的容积室转移到储存器。

    Method of controlling the flow rate of a variable capacity hydraulic pump for a construction apparatus
    5.
    发明授权
    Method of controlling the flow rate of a variable capacity hydraulic pump for a construction apparatus 有权
    控制施工设备的可变容量液压泵的流量的方法

    公开(公告)号：US09303659B2

    公开(公告)日：2016-04-05

    申请号：US13994857

    申请日：2010-12-28

    申请人： Hung-Ju Shin

    发明人： Hung-Ju Shin

    IPC分类号： E02F9/22 ,  F15B9/04 ,  F15B11/042

    CPC分类号： F15B9/04 ,  E02F9/2235 ,  E02F9/2285 ,  E02F9/2296 ,  F15B11/0423 ,  F15B2211/20546 ,  F15B2211/255 ,  F15B2211/6309 ,  F15B2211/6346 ,  F15B2211/6652 ,  F15B2211/6654 ,  F15B2211/6655

    摘要： Disclosed is a method of controlling the flow rate of a hydraulic pump, which controls the discharge flow rate in proportion to a manipulated amount of a manipulation lever operated by a user even when the discharge pressure of the hydraulic pump is varied. The method of controlling the flow rate of a variable capacity hydraulic pump for a construction apparatus according to the present invention includes: a first step of calculating the required flow rate of the variable capacity hydraulic pump according to a manipulated amount of a manipulation lever operated by a user; a second step of calculating the maximum discharge flow rate within a range equal to or less than a preset horsepower or torque of the variable capacity hydraulic pump corresponding to the pressure detected by a discharge pressure detecting sensor; and a third step of controlling the discharge flow rate of the variable capacity hydraulic pump in proportion to a manipulated amount of the manipulation lever within a range equal to or less than the maximum discharge flow rate set in the second step.

    摘要翻译： 公开了一种控制液压泵的流量的方法，即使当液压泵的排出压力变化时，液压泵的流量与用户操作的操纵杆的操纵量成比例地控制排出流量。 根据本发明的用于施工设备的可变容量液压泵的流量控制方法包括：第一步骤，根据由操作杆操作的操纵杆的操纵量计算可变容量液压泵的所需流量 用户; 在与由排出压力检测传感器检测出的压力对应的可变容量液压泵的预设马力或扭矩以下的范围内计算最大排出流量的第二步骤; 以及在等于或小于在第二步骤中设定的最大排出流量的范围内的情况下，将可变容量液压泵的排出流量与操作杆的操作量成比例地控制的第三步骤。

    Electrically-Operated Hydraulic Actuator Unit and Hydraulic Four-Wheel-Drive Work Vehicle
    6.
    发明申请
    Electrically-Operated Hydraulic Actuator Unit and Hydraulic Four-Wheel-Drive Work Vehicle 有权
    电动液压执行器和液压四轮驱动工作车

    公开(公告)号：US20130133970A1

    公开(公告)日：2013-05-30

    申请号：US13814108

    申请日：2011-07-21

    申请人： Minoru Kamada ,  Nobuhiko Ichinose

    发明人： Minoru Kamada ,  Nobuhiko Ichinose

    IPC分类号： B60K23/08 ,  F16H61/425 ,  F15B9/04

    CPC分类号： B60K23/08 ,  B60Y2200/223 ,  F03C1/0636 ,  F03C1/0686 ,  F04B1/324 ,  F15B9/04 ,  F16H61/425

    摘要： Provided an electrically-operated hydraulic actuator unit that includes an electrically-operated motor controlled by a control apparatus and actuating a volume adjusting mechanism through driving-side and driven-side arms, and a clutch mechanism in which the driven-side arm presses a contact member against a clutch case so that the driven-side arm is locked when a force from the volume adjusting mechanism is applied to the driven-side arm. The control apparatus can set duties of first to fourth drive signals to be output to the electrically-operated motor in a neutral-side start period, a neutral-side ordinary actuation period, a higher-volume-side start period and a higher-volume-side ordinary actuation period. The duties of the first and fourth drive signals are larger than that of the second drive signal, the duty of the third drive signal is larger than that of the fourth drive signal, and an integrated ON-time of the third drive signal is larger than that of the first drive signal.

    摘要翻译： 提供一种电动液压致动器单元，其包括由控制装置控制的电动马达，并且通过驱动侧和从动臂驱动音量调节机构，以及离合器机构，其中从动侧臂压接触点 抵靠离合器壳体的构件，使得当来自音量调节机构的力被施加到从动侧臂时，从动侧臂被锁定。 控制装置可以在中立侧起动期间，中立侧通常动作期间，较大容量侧起动期间和较高转速时设定输出到电动马达的第一至第四驱动信号的作用 在正常的启动周期。 第一驱动信号和第四驱动信号的功率大于第二驱动信号的功率，第三驱动信号的占空比大于第四驱动信号的占空比，并且第三驱动信号的积分导通时间大于 第一个驱动信号。

    Power transmission
    7.
    发明授权
    Power transmission 失效
    电力传输

    公开(公告)号：US3902318A

    公开(公告)日：1975-09-02

    申请号：US50131174

    申请日：1974-08-28

    申请人： SPERRY RAND CORP

    发明人： BECKER KENNETH F ,  LAMBECK RAYMOND P ,  PEDERSEN NICHOLAS F

    IPC分类号： B64C13/40 ,  F15B9/04 ,  F15B15/18 ,  F15B21/08

    CPC分类号： B64C13/40 ,  F15B9/04 ,  F15B15/18 ,  Y10S60/916

    摘要： An integrated electro hydraulic actuator package for remotely controlling the position of an aircraft control surface has both its input power and its input command signals supplied solely by wires from remote locations. The package encloses an electric motor running wet in the hydraulic fluid and driving a reversible variable displacement pump connected directly to a differential piston and cylinder actuator and is designed to be completely manifolded. A differential piston and cylinder reservoir carries fluid to make up for any losses of fluid from the actuator to the outside of the package. An auxiliary pump supplies fluid to a servo motor circuit for control purposes, the circuit being governed by an electro-hydraulic servo valve whereby a servo motor system adjusts the displacement of the main pump. Loss of fluid from the package or mechanical failure in a pump causes loss of delivery pressure at the auxiliary pump and actuates a bypass valve to bypass the actuator allowing make-up of fluid from the reservoir. Overload protection is provided in the servo motor circuit by a pair of pressure responsive dumping valves. A linearly variable differential transformer provides a signal indicating the position of the actuator which is combined with a command signal from a remote location to govern the electrohydraulic servo valve. The position of the displacement adjuster of the main pump is also fed to the electro-hydraulic servo valve providing a signal indicative of the velocity of the actuator. A heat exchanger surrounds the electric motor and carries the fluid returning from the pump housing to the reservoir. An auxiliary electric motor driven fan cools the heat exchanger.

    摘要翻译： 用于远程控制飞行器控制表面的位置的集成电动液压致动器包具有其输入功率和其输入命令信号，其仅由远程位置的电线提供。 该包装封装在液压流体中运行湿润的电动马达，并驱动直接连接到差动活塞和气缸致动器的可逆变量泵，并被设计为完全流动。 差动活塞和气缸储存器承载流体以弥补流体从致动器到包装外部的任何损失。 辅助泵为了控制目的而向伺服电动机电路供给流体，该电路由电液伺服阀控制，由此伺服电动机系统调节主泵的排量。 包装中的流体损失或泵内的机械故障导致辅助泵处的输送压力下降，并致动一个旁通阀，以绕过致动器，从而允许来自储存器的流体的补充。 通过一对压力响应倾卸阀在伺服电动机回路中提供过载保护。 线性可变差动变压器提供指示致动器的位置的信号，其与来自远程位置的指令信号组合以控制电液伺服阀。 主泵的位移调节器的位置也被馈送到电液伺服阀，提供指示致动器的速度的信号。 热交换器围绕电动机并且将从泵壳返回的流体运送到储存器。 辅助电动机驱动的风扇冷却热交换器。

    Electrically-operated hydraulic actuator unit and hydraulic four-wheel-drive work vehicle
    10.
    发明授权
    Electrically-operated hydraulic actuator unit and hydraulic four-wheel-drive work vehicle 有权
    电动液压执行器单元和液压四轮驱动作业车

    公开(公告)号：US08607917B2

    公开(公告)日：2013-12-17

    申请号：US13814108

    申请日：2011-07-21

    申请人： Minoru Kamada ,  Nobuhiko Ichinose

    发明人： Minoru Kamada ,  Nobuhiko Ichinose

    IPC分类号： B60K17/356 ,  F15B13/16

    CPC分类号： B60K23/08 ,  B60Y2200/223 ,  F03C1/0636 ,  F03C1/0686 ,  F04B1/324 ,  F15B9/04 ,  F16H61/425

    摘要： Provided an electrically-operated hydraulic actuator unit that includes an electrically-operated motor controlled by a control apparatus and actuating a volume adjusting mechanism through driving-side and driven-side arms, and a clutch mechanism in which the driven-side arm presses a contact member against a clutch case so that the driven-side arm is locked when a force from the volume adjusting mechanism is applied to the driven-side arm. The control apparatus can set duties of first to fourth drive signals to be output to the electrically-operated motor in a neutral-side start period, a neutral-side ordinary actuation period, a higher-volume-side start period and a higher-volume-side ordinary actuation period. The duties of the first and fourth drive signals are larger than that of the second drive signal, the duty of the third drive signal is larger than that of the fourth drive signal, and an integrated ON-time of the third drive signal is larger than that of the first drive signal.

    摘要翻译： 提供一种电动液压致动器单元，其包括由控制装置控制的电动马达，并且通过驱动侧和从动臂驱动音量调节机构，以及离合器机构，其中从动侧臂压接触点 抵靠离合器壳体的构件，使得当来自音量调节机构的力被施加到从动侧臂时，从动侧臂被锁定。 控制装置可以在中立侧起动期间，中立侧通常动作期间，较大容量侧起动期间和较高转速时设定输出到电动马达的第一至第四驱动信号的作用 在正常的启动周期。 第一驱动信号和第四驱动信号的功率大于第二驱动信号的功率，第三驱动信号的占空比大于第四驱动信号的占空比，并且第三驱动信号的积分导通时间大于 第一个驱动信号。