Hybrid excavator boom actuating system and method for controlling same
    3.
    发明授权
    Hybrid excavator boom actuating system and method for controlling same 有权
    混合式挖掘机吊臂驱动系统及其控制方法

    公开(公告)号:US09512596B2

    公开(公告)日:2016-12-06

    申请号:US13996982

    申请日:2011-12-26

    IPC分类号: E02F9/22 E02F9/20

    摘要: The present disclosure relates to a hybrid excavator boom actuating system and to a method for controlling the same. The boom actuating system comprises: an electric motor serving as a motor or a generator; an ultra capacitor for storing electricity generated by the electric motor; a hydraulic pump motor driven by the electric motor to supply hydraulic fluid to a boom; a boom control valve which has a closed circuit for selectively connecting or disconnecting an outlet line and an inlet line of the hydraulic pump motor to or from a head or a rod side of the boom; a main pump driven by the engine to supply hydraulic fluid to a bucket, a travel motor or an arm; a motor bypass valve connected to the outlet line and the inlet line to interconnect the outlet line and the inlet line or disconnect the outlet line from the inlet line; and a controller for controlling the electric motor, the hydraulic pump motor, the boom control valve and the motor bypass valve.

    摘要翻译: 本公开涉及一种混合动力挖掘机起重臂起动系统及其控制方法。 动臂驱动系统包括:用作电动机或发电机的电动机; 用于存储由电动机产生的电力的超级电容器; 由电动机驱动的液压泵马达,以向液压缸提供液压流体; 悬臂控制阀,其具有闭合回路,用于选择性地将液压泵马达的出口管线和入口管路连接或断开到起重臂的头部或杆侧; 由发动机驱动的主泵,以将液压流体供应到铲斗,行进马达或手臂; 连接到出口管线的电动机旁通阀和用于将出口管线和入口管线互连或将出口管路与入口管线断开的入口管线; 以及用于控制电动机,液压泵电动机,动臂控制阀和电动机旁通阀的控制器。

    ENGINE SYSTEM UTILIZING HYDRAULIC PRESSURE
    4.
    发明申请
    ENGINE SYSTEM UTILIZING HYDRAULIC PRESSURE 有权
    发动机系统利用液压压力

    公开(公告)号:US20150267725A1

    公开(公告)日:2015-09-24

    申请号:US14666879

    申请日:2015-03-24

    发明人: Taejoong Wang

    摘要: An engine system utilizing a hydraulic pressure includes an engine, a hydraulic system having at least one hydraulic pump discharging a hydraulic oil for operating an actuator and a hydraulic oil tank storing the hydraulic oil returned from the actuator, a hydraulic power transmission device connected to a hydraulic line between the hydraulic pump and the hydraulic oil tank and configured to transmit a hydraulic pressure of the hydraulic oil as a driving source, and a vehicular auxiliary device driven by using the hydraulic pressure transmitted from the hydraulic power transmission device as the driving source.

    摘要翻译: 使用液压的发动机系统包括发动机,具有至少一个液压泵排出用于操作致动器的液压油的液压系统和存储从致动器返回的液压油的液压油箱;液压动力传递装置,其连接到 液压泵和液压油箱之间的液压管路,其构造为传递作为驱动源的液压油的液压,以及通过使用从液压动力传递装置传递的液压作为驱动源而驱动的车辆辅助装置。

    HYDRAULIC CIRCUIT FOR CONSTRUCTION MACHINE AND CONTROL DEVICE FOR SAME
    5.
    发明申请
    HYDRAULIC CIRCUIT FOR CONSTRUCTION MACHINE AND CONTROL DEVICE FOR SAME 有权
    用于建筑机械的液压电路及其控制装置

    公开(公告)号:US20150068200A1

    公开(公告)日:2015-03-12

    申请号:US14540226

    申请日:2014-11-13

    IPC分类号: E02F9/22 F15B11/00

    摘要: A hydraulic circuit for a construction machine including a center bypass passage including a group of directional control valves arranged in tandem; and a bleed-off valve arranged in the center bypass passage on a downstream side of the group, wherein each directional control valve includes a first internal passage causing the pressurized oil supplied to the directional control valve to flow out to the center bypass passage and a second internal passage supplying the pressurized oil to a cylinder port, wherein a parallel passage is formed by the center bypass passage and the first internal passage by causing the pressurized oil discharged from the hydraulic pump to flow to the center bypass passage on the downstream of the directional control valve, wherein the second internal passage supplies the pressurized oil from the center bypass passage through an opening of a spool and/or the bypass passage to the cylinder port.

    摘要翻译: 一种用于建筑机械的液压回路,包括:一个中心旁通通道,包括一组串联布置的方向控制阀; 以及设置在所述组的下游侧的所述中央旁通通路的排泄阀,其中,各方向控制阀包括使供给到所述方向控制阀的加压油流出到所述中心旁通通路的第一内部通路, 第二内部通道将加压油供应到气缸端口,其中通过中心旁通通道和第一内部通道形成平行通道,使得从液压泵排出的加压油在下游流动到中心旁通通道 方向控制阀,其中第二内部通道将来自中心旁通通道的加压油通过阀芯和/或旁路通道的开口提供到气缸端口。

    HYDRAULIC CIRCUIT FOR CONSTRUCTION MACHINE AND CONTROL DEVICE FOR SAME
    6.
    发明申请
    HYDRAULIC CIRCUIT FOR CONSTRUCTION MACHINE AND CONTROL DEVICE FOR SAME 有权
    用于建筑机械的液压电路及其控制装置

    公开(公告)号:US20150040552A1

    公开(公告)日:2015-02-12

    申请号:US14525322

    申请日:2014-10-28

    IPC分类号: E02F9/22 F15B11/16

    摘要: A hydraulic circuit of a construction machine including center bypass passages, into which a pressurized oil from hydraulic pumps is supplied, includes a directional control valve group in tandem with the center bypass passages; a bleed-off valve on a downstream side of each center bypass passage; and a merging circuit that merges the pressurized oil supplied into one center bypass passage and that in another center bypass passage, wherein each directional control valve includes a first internal passage that flows the pressurized oil into the center bypass passages, and a second internal passage that supplies the pressurized oil to a hydraulic actuator, wherein the center bypass passages and the first internal passage form a parallel passage, wherein an opening area of the bleed-off valve is changed, wherein the merging circuit includes a merging directional control valve that controls an inflow direction of the pressurized oil to be merged.

    摘要翻译: 一种施工机械的液压回路,包括供给来自液压泵的加压油的中心旁路通路,包括与中心旁路通路串联的方向控制阀组; 每个中心旁路通道的下游侧的泄放阀; 以及合流电路,其将供给到一个中心旁通路的加压油和另一中心旁通通路的加压油合流,其中,各方向控制阀包括将加压油流入中心旁通路的第一内部通路,以及第二内部通路, 将压力油供给到液压致动器,其中中心旁通通道和第一内部通道形成平行通道,其中排放阀的开口面积改变,其中合流回路包括合流方向控制阀,其控制 要合并的加压油的流入方向。