HYDRAULIC APPARATUS
    3.
    发明公开
    HYDRAULIC APPARATUS 审中-公开
    液压装置

    公开(公告)号:EP3315791A1

    公开(公告)日:2018-05-02

    申请号:EP16814120.8

    申请日:2016-06-02

    Abstract: An object is to prevent a decrease in an operating speed of an external hydraulic work machine when actuation and turning operation of the external hydraulic work machine are performed at the same time. A hydraulic apparatus for a hydraulic work vehicle capable of supplying pressure oil to any of a bucket cylinder (20), an arm cylinder (21), a boom cylinder (22), a swing cylinder (25), a blade cylinder (13), a turning hydraulic motor (62), a left traveling hydraulic motor (63), a right traveling hydraulic motor (64), and a PTO hydraulic motor (65) by a first hydraulic pump (PI), a second hydraulic pump (P2), or a third hydraulic pump (P3) is configured in such a manner that pressure oil can be branched off from a discharge oil passage (28) of the third hydraulic pump (P3) and supplied through an external pipe (71) to a downstream side of a load check valve (46) disposed on an oil passage communicating with a pump port (36p) of a PTO control valve (36) for switching supply of pressure oil from the second hydraulic pump (P2) to an external hydraulic work machine (16).

    Abstract translation: 目的在于防止外部液压作业机械的动作和转动动作同时进行时外部液压作业机械的动作速度降低。 本发明提供一种液压作业车辆的液压装置,其能够向铲斗液压缸(20),斗杆液压缸(21),动臂液压缸(22),摆动液压缸(25),铲刀液压缸(13) ,第一液压泵(P1),第二液压泵(P2),第一液压泵(P2),第二液压泵(P2),液压马达 )或第三液压泵(P3)构成为能够从第三液压泵(P3)的排出油路(28)分支出压力油并通过外部配管(71)供给到第三液压泵 设置在与PTO控制阀(36)的泵口(36p)连通的油路上的负载止回阀(46)的下游侧,用于切换从第二液压泵(P2)供应压力油至外部液压工作 机器(16)。

    Rotation control device and construction machine including rotation control device
    5.
    发明公开
    Rotation control device and construction machine including rotation control device 审中-公开
    旋转控制装置和工程机械包括旋转控制装置

    公开(公告)号:EP2749700A3

    公开(公告)日:2018-02-21

    申请号:EP13198758.8

    申请日:2013-12-20

    Abstract: The invention provides a rotation control device (5) capable of reducing a loss of a power of a hydraulic pump (15) in a backward direction operation and also provides a construction machine (1) including the same. The controller (24) controls a capacity of the hydraulic pump (15) such that, in a forward direction operation in which an operating direction detected by the operation sensor (18A, 18B) and a rotating direction detected by a rotation sensor (23) coincide with each other, the capacity of the hydraulic pump (15) is increased in accordance with an increase in the operation amount detected by an operation sensor (18A, 18B), on the other hand, restricts the capacity of the hydraulic pump (15) more in a backward direction operation, in which the operating direction detected by the operation sensor (18A, 18B) and the rotating direction detected by the rotation sensor (23) are reverse to each other, than in the forward direction operation.

    Abstract translation: 本发明提供一种旋转控制装置(5),该旋转控制装置(5)能够减少液压泵(15)在向后方向操作时的动力损失,并且还提供包括该旋转控制装置的建筑机械(1)。 控制器(24)控制液压泵(15)的容量,使得在由操作传感器(18A,18B)检测到的操作方向和由旋转传感器(23)检测到的旋转方向的正向操作中, 另一方面,液压泵15的容量随着由操作传感器18A,18B检测到的操作量的增加而增加,从而限制液压泵15的容量 )相比,在前进方向的操作中,由操作传感器(18A,18B)检测到的操作方向和由旋转传感器(23)检测出的旋转方向相反。

    HYDRAULIC SYSTEM FOR WORK MACHINE
    10.
    发明公开
    HYDRAULIC SYSTEM FOR WORK MACHINE 审中-公开
    工作机液压系统

    公开(公告)号:EP3184827A1

    公开(公告)日:2017-06-28

    申请号:EP16204950.6

    申请日:2016-12-19

    Inventor: HORII, Hiroshi

    Abstract: A hydraulic system for a work machine includes a first hydraulic actuator, a second hydraulic actuator, a hydraulic pump to discharge an operation fluid, a first control valve serving as a control valve to control the first hydraulic actuator, the first control valve including a first direction switch to switch the operation fluid and a pressure compensator to maintain a differential pressure to a constant pressure, the differential pressure being generated between a pressure of the operation fluid inputted and a pressure of the operation fluid to be outputted. And, the hydraulic system includes a second control valve serving as another control valve to control the second hydraulic actuator, the second control valve including a second direction switch to switch the operation fluid and a flow rate prioritizer to prioritize a flow rate of the operation fluid that is to be outputted to the second hydraulic actuator.

    Abstract translation: 本发明提供一种作业机械的液压系统,其包括:第一液压致动器,第二液压致动器,排出工作流体的液压泵,作为控制第一液压致动器的控制阀的第一控制阀,第一控制阀包括第一 方向开关切换操作流体和压力补偿器以将压差保持为恒定压力,所述压差是在输入的操作流体的压力与要输出的操作流体的压力之间产生的。 并且,液压系统具备作为用于控制第二液压致动器的其他控制阀的第二控制阀,该第二控制阀具有切换工作流体的第二方向开关和流量优先顺序器,使工作流体的流量优先 将输出到第二液压致动器。

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