Hydraulic pump controller for construction machine
    5.
    发明授权
    Hydraulic pump controller for construction machine 有权
    施工机械液压泵控制器

    公开(公告)号:US08707690B2

    公开(公告)日:2014-04-29

    申请号:US13141583

    申请日:2009-12-23

    IPC分类号: F16D31/02

    摘要: A hydraulic pump controlling apparatus of a construction machine according to the present disclosure includes: a hydraulic pump in which a swash plate angle is controlled to control a discharge flow; an auxiliary pump; a control valve controlling a flowing direction of a fluid discharged from the hydraulic pump and selectively supplying the fluid to an actuator; an orifice and a relief valve connected between a center bypass line of the control valve and a tank T to be parallel to each other; signal pressure selecting units receiving a fluid passing through the center bypass line of the control valve and a fluid discharged from the auxiliary pump, and selecting the pressure of any one of the fluids as a signal pressure; and a regulator receiving the signal pressure selected from the signal pressure selecting units to control the swash plate angle of the hydraulic pump, and the signal pressure selecting unit selects the pressure of the fluid discharged from the auxiliary pump as the signal pressure and transfers the selected pressure to the regulator when the construction machine is in an idle state.

    摘要翻译: 根据本公开的施工机械的液压泵控制装置包括:液压泵,其中控制斜盘角度以控制排出流; 辅助泵 控制阀,控制从液压泵排出的流体的流动方向,并选择性地将流体供应到致动器; 连接在所述控制阀的中心旁路管路和箱体T之间以彼此平行的孔口和安全阀; 信号压力选择单元,其接收通过所述控制阀的中心旁路管路的流体和从所述辅助泵排出的流体,并且将所述流体中的任一个的压力选择为信号压力; 接收从信号压力选择单元选择的信号压力的调节器,控制液压泵的斜板角度,信号压力选择单元选择从辅助泵排出的流体的压力作为信号压力,并将所选择的 当施工机器处于空闲状态时对调压器施压。

    HYDRAULIC PUMP CONTROLLER FOR CONSTRUCTION MACHINE
    6.
    发明申请
    HYDRAULIC PUMP CONTROLLER FOR CONSTRUCTION MACHINE 有权
    液压泵控制器

    公开(公告)号:US20110262287A1

    公开(公告)日:2011-10-27

    申请号:US13141583

    申请日:2009-12-23

    IPC分类号: F04B49/00

    摘要: A hydraulic pump controlling apparatus of a construction machine according to the present disclosure includes: a hydraulic pump in which a swash plate angle is controlled to control a discharge flow; an auxiliary pump; a control valve controlling a flowing direction of a fluid discharged from the hydraulic pump and selectively supplying the fluid to an actuator; an orifice and a relief valve connected between a center bypass line of the control valve and a tank T to be parallel to each other; signal pressure selecting units receiving a fluid passing through the center bypass line of the control valve and a fluid discharged from the auxiliary pump, and selecting the pressure of any one of the fluids as a signal pressure; and a regulator receiving the signal pressure selected from the signal pressure selecting units to control the swash plate angle of the hydraulic pump, and the signal pressure selecting unit selects the pressure of the fluid discharged from the auxiliary pump as the signal pressure and transfers the selected pressure to the regulator when the construction machine is in an idle state.

    摘要翻译: 根据本公开的施工机械的液压泵控制装置包括:液压泵,其中控制斜盘角度以控制排出流量; 辅助泵 控制阀,控制从液压泵排出的流体的流动方向,并选择性地将流体供应到致动器; 连接在所述控制阀的中心旁路管路和箱体T之间以彼此平行的孔口和安全阀; 信号压力选择单元,其接收通过所述控制阀的中心旁路管路的流体和从所述辅助泵排出的流体,并且将所述流体中的任一个的压力选择为信号压力; 接收从信号压力选择单元选择的信号压力的调节器,控制液压泵的斜板角度,信号压力选择单元选择从辅助泵排出的流体的压力作为信号压力,并将所选择的 当施工机器处于空闲状态时对调压器施压。