HYDRAULIC SYSTEM HAVING AUTOMATIC RIDE CONTROL
    3.
    发明公开
    HYDRAULIC SYSTEM HAVING AUTOMATIC RIDE CONTROL 审中-公开
    HYDRAULIK MIT AUTOMATISCHER FAHRTSTEUERUNG

    公开(公告)号:EP3162965A1

    公开(公告)日:2017-05-03

    申请号:EP16002153

    申请日:2016-10-06

    申请人: CATERPILLAR INC

    IPC分类号: E02F9/22

    摘要: A hydraulic system (28) is provided for a mobile machine (10) having a lift arm (13) attached to a bucket (14) and a transmission (20). The hydraulic system may have a hydraulic actuator (24) configured to move the lift arm and bucket. The hydraulic system may further have an accumulator (56) configured to store pressurized fluid and an accumulator valve (58) configured to control fluid flow between the accumulator and the hydraulic actuator, for a ride control mode of operation configured to cushion movement of the bucket. The hydraulic system may also have a lift arm sensor (66) associated with the mobile machine and configured to generate an angle signal indicative of an angle of the lift arm and a speed sensor (68) associated with the mobile machine and configured to generate a speed signal indicative of the speed of the mobile machine. The hydraulic system may further have a controller (64) in communication with the accumulator valve, the lift arm sensor, the speed sensor, and the transmission. The controller may be configured to receive the speed signal, determine a gear setting of the transmission, and receive the angle signal. The controller may also be configured to selectively activate and deactivate the ride control mode of operation based on the speed of the mobile machine and the angle of the lift arm when the gear setting of the transmission is below a minimum gear setpoint.

    摘要翻译: 液压系统(28)被提供用于具有附接至铲斗(14)和变速器(20)的提升臂(13)的移动机器(10)。 液压系统可具有构造成移动提升臂和铲斗的液压致动器(24)。 所述液压系统还可以具有构造成存储加压流体的蓄能器(56)和构造成控制所述蓄能器和所述液压致动器之间的流体流动的蓄能器阀(58),用于驾驶控制操作模式,所述驾驶控制操作模式构造成缓冲所述铲斗 。 所述液压系统还可以具有与所述移动机器相关联的提升臂传感器(66),所述提升臂传感器(66)被配置为生成指示所述提升臂的角度的角度信号以及与所述移动机器相关联的速度传感器(68)并且被配置为生成 表示移动机器的速度的高速信号。 液压系统还可以具有与蓄能器阀,提升臂传感器,速度传感器和变速器连通的控制器(64)。 控制器可以被配置为接收速度信号,确定变速器的档位设置,并且接收角度信号。 控制器还可以被配置为基于变速器的档位设定在最小档位设定点以下时移动机器的速度和提升臂的角度来选择性地启用和停用行驶控制操作模式。

    APPARATUS AND METHOD FOR VARIABLY CONTROLLING SPOOL DISPLACEMENT OF CONSTRUCTION MACHINE
    9.
    发明公开
    APPARATUS AND METHOD FOR VARIABLY CONTROLLING SPOOL DISPLACEMENT OF CONSTRUCTION MACHINE 有权
    DEVICE AND METHOD建筑机械线圈推迟的可变控制

    公开(公告)号:EP2985391A1

    公开(公告)日:2016-02-17

    申请号:EP14780000.7

    申请日:2014-04-01

    发明人: KIM, Ki Yong

    IPC分类号: E02F9/22 F15B15/02 F02D29/04

    摘要: Provided are an apparatus and a method for variably controlling spool displacement of a construction machine, which are capable of improving regeneration efficiency of the construction machine, and improving a fuel efficiency characteristic of the construction machine by reducing pressure loss in the operating mode by adjusting the quantity of spool displacement in a regeneration mode when a current pressure of a main pump is less than a predetermined operating pressure, and determining whether the construction machine is in an operating mode or the regeneration mode in real time according to an operating angle of a joystick and the current pressure of the main pump when the current pressure of the main pump is greater than or equal to the predetermined operating pressure to variably change the quantity of spool displacement in the operating mode.

    摘要翻译: 本发明提供了在设备和用于可变地控制的建筑机械,其能够通过调节降低在运行模式的压力损失改善建筑机械的再生效率,并且提高工程机械的燃油效率特性的阀芯位移的方法 在再生模式阀芯位移时的主泵的当前压力小于一个预定的工作压力,和确定性采矿无论建筑机械是在operatingMode或在操纵杆的操作角在实时雅丁再生模式的数量 与主泵的当前压力。当主泵的当前压力是否大于或等于预定的工作压力,以可变地改变操作模式阀芯位移的量。

    OIL-PRESSURE CONTROL SYSTEM
    10.
    发明公开
    OIL-PRESSURE CONTROL SYSTEM 有权
    ÖLDRUCKSTEUERSYSTEM

    公开(公告)号:EP2851565A1

    公开(公告)日:2015-03-25

    申请号:EP12876836.3

    申请日:2012-05-18

    申请人: Yamaji, Kenpei

    发明人: Yamaji, Kenpei

    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. The controller is provided with a selector that selects any of the plurality of loops in correspondence with the operation input and the feedback input, so that one loop out of the plurality of loops is selected by the selector and variable displacement control of the hydraulic pump is performed based on the control value from the selected loop.

    摘要翻译: 提供了一种液压控制系统,其中从可变排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,流量控制回路和最小压力保持回路的控制器执行,该回路基于反馈输入或反馈输入本身反馈计算值。 该控制器设置有选择器,其选择与操作输入和反馈输入相对应的多个回路中的任一个,使得通过选择器选择多个回路中的一个回路,并且液压泵的可变位移控制是 基于所选循环的控制值执行。