Straight traveling hydraulic circuit
    63.
    发明授权
    Straight traveling hydraulic circuit 失效
    直行液压回路

    公开(公告)号:US07614225B2

    公开(公告)日:2009-11-10

    申请号:US11732438

    申请日:2007-04-03

    申请人: Jin Wook Kim

    发明人: Jin Wook Kim

    IPC分类号: F15B11/00 B62D11/06

    摘要: A straight traveling hydraulic circuit is provided. In case of performing a combined operation in which a fine operation of a working device and a fine traveling of a traveling device are simultaneously required, the straight traveling hydraulic circuit can allow the working device and the traveling device to operate independently, and thus prevent a declination or sudden traveling of the equipment. In case of performing the combined operation by simultaneously operating the traveling device and the working device, first and second center bypass shifting valves installed on the lowermost stream side of first and second center bypass passages are shifted by a pilot signal pressure that shifts a straight traveling valve installed on an upper stream side of the second center bypass passage, so that the degree of opening of the first and second center bypass passages is reduced to operate the working device and the traveling device independently.

    摘要翻译: 提供直行式液压回路。 在执行同时需要工作装置的精细操作和行进装置的精细行进的组合操作的情况下,直行运行液压回路可以允许工作装置和行驶装置独立地操作,从而防止 设备的倾斜或突然旅行。 在通过同时操作行驶装置和作业装置进行组合操作的情况下,安装在第一和第二中心旁通通道的最下游侧的第一和第二中心旁路换档阀被转移直线行驶 阀安装在第二中心旁通通道的上游侧,使得第一和第二中心旁通通道的开度减小,以独立地操作工作装置和行进装置。

    DISPLAY DRIVING CIRCUIT
    64.
    发明申请
    DISPLAY DRIVING CIRCUIT 有权
    显示驱动电路

    公开(公告)号:US20090021505A1

    公开(公告)日:2009-01-22

    申请号:US12165652

    申请日:2008-06-30

    IPC分类号: G06F3/038

    CPC分类号: G09G3/3696 H01L27/0248

    摘要: The present invention relates to a display driving circuit, which includes a latch-up prevention unit, thus preventing the occurrence of latch-up. The display driving circuit according to the present invention includes first to third voltage generation units configured to receive an externally applied input voltage having a same magnitude and generate respective voltages having different magnitudes, and a latch-up prevention unit connected to the second voltage generation unit and configured to receive a lower voltage among voltages output from the second voltage generation unit and to ground the lower voltage for a preset period of time. Accordingly, the second driving voltage output from the second voltage generation unit is connected to the latch-up prevention unit, including a plurality of switching means connected to the ground, and is grounded for a preset period of time, thus preventing the occurrence of latch-up and reducing the size of the driving circuit.

    摘要翻译: 显示驱动电路技术领域本发明涉及一种显示驱动电路,其包括一个防止闩锁的单元,从而防止闩锁的发生。 根据本发明的显示驱动电路包括:第一至第三电压产生单元,被配置为接收具有相同幅度的外部施加的输入电压并产生具有不同幅度的各自的电压;以及闩锁防止单元,连接到第二电压产生单元 并且被配置为在从所述第二电压产生单元输出的电压中接收较低电压,并在所述预设时间段内接地所述较低电压。 因此,从第二电压产生单元输出的第二驱动电压连接到闩锁防止单元,其包括连接到地的多个开关装置,并且在预定时间段内接地,从而防止闩锁的发生 并且减小驱动电路的尺寸。

    Pressure control valve
    66.
    发明申请
    Pressure control valve 审中-公开
    压力控制阀

    公开(公告)号:US20080042093A1

    公开(公告)日:2008-02-21

    申请号:US11820071

    申请日:2007-06-18

    申请人: Jin Wook Kim

    发明人: Jin Wook Kim

    IPC分类号: F16K17/04

    摘要: A pressure control valve is disclosed, which can suppress the generation of noise and vibration due to cavitation when hydraulic fluid is fed from a high-pressure side to a low-pressure side, which is caused by the change of a pilot poppet structure that is in detachable contact with a seat of the pressure control valve to close/open a flow path. The pressure control valve includes a pilot poppet, being detachably in contact with a two-stage seat formed in a flow path connecting a high-pressure path with a low-pressure path, for closing/opening the flow path, an elastic member for elastically biasing the pilot poppet, which has been pressed onto the seat to close the flow path, to its initial state, and a ring-shaped balancing groove formed on a periphery of the pilot poppet that forms a ring-shaped gap in association with the seat when the pilot poppet is lifted from the seat.

    摘要翻译: 公开了一种压力控制阀,其能够抑制当从高压侧向低压侧供给液压流体时由于空穴引起的噪声和振动的产生,这是由于先导式提升阀结构的变化引起的 与压力控制阀的座可拆卸地接触以关闭/打开流路。 该压力控制阀包括一个先导式提升阀,该导向提升阀可拆卸地与形成在连接高压通道和低压通道的流路中的两级座接触,用于关闭/打开流路,弹性件弹性地 将已经按压到座椅上的先导提升阀偏压到其初始状态,并且形成在与座椅相关联的形成环形间隙的先导提升阀的周边上的环形平衡槽 当飞行员提升阀从座椅上抬起时。

    Hydraulic control circuit and method thereof
    67.
    发明申请
    Hydraulic control circuit and method thereof 有权
    液压控制电路及其方法

    公开(公告)号:US20060117942A1

    公开(公告)日:2006-06-08

    申请号:US11103890

    申请日:2005-04-12

    申请人: Jin Wook Kim

    发明人: Jin Wook Kim

    IPC分类号: F15B11/10

    摘要: Disclosed is a hydraulic control circuit and method thereof for reducing heat generation and energy losses caused by overload. The hydraulic control circuit of the present invention includes a control lever for generating a manipulated signal according to a manipulated variable; a control valve driven by a pilot signal pressure for controlling a flow of the pressurized fluid traveling from the hydraulic pump to the actuator; a displacement sensor for detecting a switching position of the control valve; a pump pressure sensor for detecting a pump pressure applied to the hydraulic pump; an electronic proportional valve for supplying a pilot signal pressure to the control valve; and a controller for receiving the manipulated signal, determining a pilot signal pressure, outputting a control signal to the electronic proportional valve, receiving signals from the displacement sensor and the pump pressure sensor and comparing the signals with pre-stored reference data, and outputting to the electronic proportional valve a stroke error correcting control signal for adjusting the switching position of the control valve.

    摘要翻译: 公开了一种用于减少由过载引起的发热和能量损失的液压控制电路及其方法。 本发明的液压控制电路包括:控制杆,用于根据操作变量产生操纵信号; 由用于控制从液压泵行进到致动器的加压流体的流动的先导信号压力驱动的控制阀; 用于检测所述控制阀的切换位置的位移传感器; 用于检测施加到所述液压泵的泵压力的泵压力传感器; 电子比例阀,用于向控制阀提供先导信号压力; 以及控制器,用于接收操纵信号,确定导频信号压力,向电子比例阀输出控制信号,从位移传感器和泵压力传感器接收信号,并将信号与预先存储的参考数据进行比较,并输出到 电子比例阀,用于调节控制阀的切换位置的行程误差校正控制信号。

    Variable flow control apparatus for actuator of heavy construction equipment
    68.
    发明授权
    Variable flow control apparatus for actuator of heavy construction equipment 有权
    重型施工设备执行器可变流量控制装置

    公开(公告)号:US06915729B2

    公开(公告)日:2005-07-12

    申请号:US10716069

    申请日:2003-11-18

    申请人: Jin Wook Kim

    发明人: Jin Wook Kim

    摘要: The present invention relates to a variable flow control apparatus for an actuator of a heavy construction equipment capable of implementing constant flow of hydraulic fluid from a hydraulic pump to an actuator even when a pilot pressure capable of driving a seat valve openably and closably installed in a discharge flow path of the hydraulic pump exceeds a certain pressure level.

    摘要翻译: 本发明涉及一种用于重型施工设备的致动器的可变流量控制装置,其能够实现从液压泵到致动器的液压流体的恒定流量,即使当能够将座阀可开启和关闭地安装在 液压泵的排出流路超过一定的压力水平。

    Control apparatus of hydraulic valve for holding load
    69.
    发明授权
    Control apparatus of hydraulic valve for holding load 失效
    用于保持负载的液压阀控制装置

    公开(公告)号:US06907815B2

    公开(公告)日:2005-06-21

    申请号:US10716035

    申请日:2003-11-18

    申请人: Jin Wook Kim

    发明人: Jin Wook Kim

    摘要: The present invention relates to a control apparatus of a hydraulic valve for holding load in which a drain line of a holding valve adapted to preclude momentary drop of load in a hydraulic actuator is substituted with a path in the interior of a directional control valve, so that a pipe line of a drain side functioning as a hydraulic hose and exposed to the outside is not needed in the present invention. The control apparatus of a hydraulic valve for holding load comprises a drain line adapted to allow hydraulic fluid returned during a switching operation of the sub-spool to flow in a pilot line of the side of a drain corresponding to the opposite side of a pilot line adapted to pressurize the spool of the directional control valve.

    摘要翻译: 本发明涉及一种用于保持负载的液压阀的控制装置,其中适于阻止液压致动器中的瞬时下降的保持阀的排出管线被方向控制阀内部的路径所取代,因此 在本发明中不需要用作液压软管并暴露于外部的排水侧管线。 用于保持负载的液压阀的控制装置包括排水管线,其适于允许在副阀芯的切换操作期间返回的液压流体在对应于引导管线的相对侧的排水侧的先导管路中流动 适于对方向控制阀的阀芯加压。

    Hydraulic circuit for boom cylinder combination having float function
    70.
    发明授权
    Hydraulic circuit for boom cylinder combination having float function 失效
    具有浮动功能的动臂缸组合液压回路

    公开(公告)号:US06892535B2

    公开(公告)日:2005-05-17

    申请号:US10442337

    申请日:2003-05-21

    申请人: Jin Wook Kim

    发明人: Jin Wook Kim

    摘要: The present invention relates to a hydraulic circuit for a boom cylinder combination having a float function which is capable of implementing a leveling work in such a manner that a leveling work is performed by lowering a boom based on its self-weight without using an operation oil discharged from a hydraulic pump using an excavator during a leveling work which includes a first inner path which is formed in one side of the boom cylinder combining spool and connects a hydraulic pump and a boom cylinder large chamber in a switching mode, a second inner path which is formed in the other side of the boom cylinder combining spool and connects an operation oil from the hydraulic pump to a hydraulic tank in a switching mode, and a third inner path which is formed in the other side of the boom cylinder combining spool and combines the operation oils from the small chamber and large chamber of the boom cylinder in a switching mode and connects the same to the hydraulic tank.

    摘要翻译: 本发明涉及一种具有浮起功能的起重臂液压缸组合液压回路,该液压回路具有浮动功能,能够实现调平作业,使得通过在不使用操作油的情况下基于其自重来降低动臂来进行调平作业 在整流作业期间使用挖掘机从液压泵排出的液压泵包括形成在动臂缸的一侧的第一内部路径,该第一内部路径组合阀芯,并且以切换模式连接液压泵和动臂油缸大腔室,第二内部路径 其形成在联合滑阀的动臂缸的另一侧,并将来自液压泵的操作油以切换模式连接到液压缸,并且第三内部通路形成在动臂缸的另一侧, 将起重机液压缸的小室和大腔室的操作油以切换模式组合,并将其连接到液压油箱。