HYDRAULIC CIRCUIT FOR CONSTRUCTION EQUIPMENT
    31.
    发明公开
    HYDRAULIC CIRCUIT FOR CONSTRUCTION EQUIPMENT 审中-公开
    建筑设备用液压回路

    公开(公告)号:EP3196367A1

    公开(公告)日:2017-07-26

    申请号:EP14902155.2

    申请日:2014-09-19

    发明人: JOUNG, Hea-Gyoon

    IPC分类号: E02F9/20 E02F9/22

    摘要: Disclosed is a hydraulic circuit for construction equipment for controlling to selectively supply a hydraulic oil from a hydraulic pump to a hydraulic cylinder for driving a boom. The hydraulic circuit for construction equipment, according to the present invention, comprises: a hydraulic cylinder driven by a hydraulic oil of a hydraulic pump; a direction control valve installed on the oil passage between the hydraulic pump and the hydraulic cylinder; an operating device installed on the oil passage between a pilot pump and the direction control valve; a center by-pass switching valve installed at the most downstream side of a center by-pass passage of the hydraulic pump; a pressure detection sensor that detects the pressure of a hydraulic oil at the large chamber side of the hydraulic cylinder; a jack-up switching valve installed on the oil passage between the operating device and the center by-pass switching valve; and a flow control valve installed in the spool of the direction control valve.

    摘要翻译: 公开了一种用于控制以从液压泵选择性地将液压油供应​​到用于驱动动臂的液压缸的施工设备的液压回路。 根据本发明的用于施工设备的液压回路包括:由液压泵的液压油驱动的液压缸; 安装在液压泵和液压缸之间的油路上的方向控制阀; 安装在先导泵和方向控制阀之间的油路上的操作装置; 安装在液压泵的中心旁路通道的最下游侧的中心旁通转换阀; 压力检测传感器,其检测液压缸的大室侧的液压油的压力; 安装在操作装置和中心旁路开关阀之间的油路上的升降换向阀; 和安装在方向控制阀的阀芯中的流量控制阀。

    SPEED CONTROLLER
    32.
    发明公开
    SPEED CONTROLLER 有权
    速度控制器

    公开(公告)号:EP3176482A1

    公开(公告)日:2017-06-07

    申请号:EP15827235.1

    申请日:2015-07-06

    发明人: HAMA, Tomio

    摘要: To provide a speed controller capable of controlling an action speed of an external cylinder in one stroke in a step-wise manner.
    The speed controller (1) includes a first flow path (16) and a second flow path (18) that allow a first port (12) and a second port (14) to be in communication with each other. The first flow path (16) is provided with a first check valve (28) for allowing flow from the first port (12) to the second port (14). The second flow path (18) is provided with a first needle valve (32), and an opening hole (28d) of the first check valve (28) is constituted as a part of a flow path. The first needle valve (32) adjusts the flow rate by changing an opening area of the opening hole (28d) with a tip portion (34a) fixed on a piston (30) in the cylinder chamber (20). The speed controller (1) further includes a third flow path (22) allowing the first port (12) and the cylinder chamber (20) to be in communication with each other. The third flow path (22) is provided with a second check valve (46) for allowing flow from the first port (12) to the cylinder chamber (20).

    摘要翻译: 本发明提供一种能够一步一步地控制外筒的动作速度的速度控制器。 速度控制器(1)包括允许第一端口(12)和第二端口(14)彼此连通的第一流动路径(16)和第二流动路径(18)。 第一流动路径(16)设置有用于允许从第一端口(12)流向第二端口(14)的第一止回阀(28)。 第二流路18具备第一针阀32,第一止回阀28的开口孔28d构成流路的一部分。 第一针阀32利用固定在缸室20内的活塞30上的前端部34a改变开口孔28d的开口面积来调整流量。 速度控制器(1)还包括允许第一端口(12)和缸室(20)彼此连通的第三流动路径(22)。 第三流路(22)设有允许从第一端口(12)流向缸室(20)的第二止回阀(46)。

    HYDRAULIC DRIVE SYSTEM
    34.
    发明公开
    HYDRAULIC DRIVE SYSTEM 审中-公开
    水力发电系统

    公开(公告)号:EP3168076A1

    公开(公告)日:2017-05-17

    申请号:EP15818685.8

    申请日:2015-06-24

    申请人: KYB Corporation

    摘要: A hydraulic drive system includes: a first hydraulic motor (12) and a second hydraulic motor (22) configured to be driven by working oils respectively discharged from a first hydraulic pump (11) and a second hydraulic pump (21) to transmit powers to different drive wheels of right and left drive wheels (2, 3); a first pump control unit (13) and a second pump control unit (23) configured to control discharge volumes and discharge directions of the first hydraulic pump (11) and the second hydraulic pump (21); a signal pressure generating unit (40) configured to generate a signal pressure for adjusting command pressures to control the first pump control unit (13) and the second pump control unit (23) in accordance with the sum of discharge pressures of the first hydraulic pump (11) and the second hydraulic pump (21); and a first pressure adjusting unit (50) and a second pressure adjusting unit (60) configured to adjust the command pressures in accordance with the signal pressure.

    摘要翻译: 液压驱动系统包括:第一液压马达(12)和第二液压马达(22),其构造成由分别从第一液压泵(11)和第二液压泵(21)排出的工作油驱动,以将动力传递到 左右驱动轮(2,3)的不同驱动轮; 第一泵控制单元(13)和第二泵控制单元(23),被配置为控制第一液压泵(11)和第二液压泵(21)的排出量和排出方向。 信号压力生成单元(40),被配置为根据第一液压泵的排出压力之和产生用于调节指令压力的信号压力,以控制第一泵控制单元(13)和第二泵控制单元(23) (11)和第二液压泵(21); 以及第一压力调节单元(50)和第二压力调节单元(60),其被构造成根据所述信号压力来调节所述指令压力。

    DISPOSITIF DE COMMANDE DE L'ECOULEMENT D'UN FLUIDE A DETECTION DE SEUIL DE PRESSION INTEGREE
    35.
    发明公开
    DISPOSITIF DE COMMANDE DE L'ECOULEMENT D'UN FLUIDE A DETECTION DE SEUIL DE PRESSION INTEGREE 有权
    一种用于控制液体与一体DRUCKSCHWELLWERTDETEKTION THE FLOW

    公开(公告)号:EP3157801A1

    公开(公告)日:2017-04-26

    申请号:EP15728564.4

    申请日:2015-06-16

    申请人: Bontaz Centre R&D

    摘要: Valve with in-built pressure threshold detection, mounted in an engine block pipe, the valve comprising a body comprising an electrically insulating external element (16) and an electrically conducting internal element (18) bearing the shutoff-element seat (14), a shutoff element (12), the valve also comprising an electrical terminal (34) connected to a detection system which, with the engine block (4) and the internal element (18), forms an electric circuit, the internal element (18) being in permanent contact with the electrical terminal (34), the internal element (18) sliding in the external element (16) so that, for a pressure below the threshold pressure, the internal element (18) is in electrical contact with the engine block, making the electric circuit, and for a pressure equal to or higher than the threshold pressure, the internal element (18) is not in electrical contact with the engine block, breaking the electric circuit.

    摘要翻译: 阀与内置压力阈值检测,安装在发动机缸体管,该阀包括一个本体在电绝缘性,其包括外部元件(16)和(导电内部元件(18)支承在闭孔闭孔座(14) 12),所述阀,以包括作为连接到检测系统,该系统,与发动机缸体(4)和内部元件(18),电子电路的形式中,所述内部元件(18电端子(34))在永久接触的 与在该外部元件的滑动电端子(34),所述内部元件(18)(16)检测,对于该阈值压力之下的压力时,内部元件(18)与所述发动机缸体的电接触,从而关闭 电路,以及用于等于或大于阈值压力的压力时,内部元件(18)不与所述发动机缸体的电接触,打破了电路。

    HYDRAULIC VALVE
    38.
    发明公开
    HYDRAULIC VALVE 审中-公开
    液压阀

    公开(公告)号:EP3002464A1

    公开(公告)日:2016-04-06

    申请号:EP15187817.0

    申请日:2015-10-01

    发明人: ITO, Koji

    摘要: A hydraulic valve (1) includes a biasing member (31, 32) for generating a biasing force to press a valve seat (40) and a valve member (51). When a second hydraulic chamber (13B) has higher hydraulic pressure than a first hydraulic chamber (13A), a hydraulic pressure difference between the first and second hydraulic chambers acts on the valve seat (40) to separate the valve seat from the valve member against the biasing force of the biasing member so that the first hydraulic chamber and the second hydraulic chamber come into fluidal communication.

    摘要翻译: 液压阀(1)包括用于产生推压阀座(40)和阀构件(51)的偏置力的偏置构件(31,32)。 当第二液压室(13B)具有比第一液压室(13A)更高的液压时,第一和第二液压室之间的液压差作用在阀座(40)上,以将阀座与阀构件分离 偏置构件的偏置力使得第一液压室和第二液压室流体连通。

    AIRCRAFT HYDRAULIC VALVE
    39.
    发明公开
    AIRCRAFT HYDRAULIC VALVE 审中-公开
    HYDRAULIKVENTILFÜRFLUGZEUG

    公开(公告)号:EP3002463A1

    公开(公告)日:2016-04-06

    申请号:EP15187557.2

    申请日:2015-09-30

    发明人: ITO, Koji

    摘要: An aircraft hydraulic valve (20) includes a housing (30), a check valve (67), a valve opening component (40), and an auxiliary hydraulic pressure supply mechanism (38). The housing includes a first port (31) communicated with a first chamber (11A) of a hydraulic actuator (11), a second port (32) communicated with a switch valve (15) bypass-communicating a second chamber (11B) of the hydraulic actuator with the first chamber (11A), and an oil channel (37) connecting the first and second ports. The check valve interrupts oil flow from the first port to the second port. The valve opening component is configured to open the check valve with pilot pressure supplied from the second chamber. The auxiliary hydraulic pressure supply mechanism obtains hydraulic pressure, for opening the check valve, from a closed hydraulic pressure section (37A), which is defined in the oil channel between the check valve and the first port.

    摘要翻译: 飞机液压阀(20)包括壳体(30),止回阀(67),阀开启部件(40)和辅助液压供给机构(38)。 壳体包括与液压致动器(11)的第一室(11A)连通的第一端口(31),与切换阀(15)连通的第二端口(32),旁通通路连通第二室 具有第一室(11A)的液压致动器和连接第一和第二端口的油通道(37)。 止回阀中断从第一个端口到第二个端口的油流量。 阀开启部件构造成以从第二室供应的先导压力来打开止回阀。 辅助液压供给机构从在止回阀和第一端口之间的油通道中限定的闭合液压部(37A)获得用于打开止回阀的液压。

    FLOW CONTROL DEVICE AND FLOW CONTROL METHOD FOR CONSTRUCTION MACHINE
    40.
    发明公开
    FLOW CONTROL DEVICE AND FLOW CONTROL METHOD FOR CONSTRUCTION MACHINE 有权
    FLUSSSTEUERUNGSVORRICHTUNG FLUSSSTEUERUNGSVERFAHRENFÜREINE BAUMASCHINE

    公开(公告)号:EP2947211A1

    公开(公告)日:2015-11-25

    申请号:EP13871736.8

    申请日:2013-01-18

    IPC分类号: E02F9/22 F02D29/04

    摘要: Disclosed are a flow control device and a flow control method for a construction machine for preventing the loss of fluid exhausted from a hydraulic pump when a boom and an arm of an excavator are operated in combination. The flow control device for a construction machine according to the present invention includes: an engine; a variable capacity hydraulic pump connected to the engine; a first hydraulic cylinder and a second hydraulic cylinder connected to the hydraulic pump; a first control valve disposed in a center bypass channel of the hydraulic pump, the first control valve, in neutral, returning the fluid exhausted from the hydraulic pump to a hydraulic tank and, when switched, controlling the driving, stopping, and direction change of the first hydraulic cylinder; a second control valve disposed downstream of the center bypass channel of the hydraulic pump, the second control valve, in neutral, returning the fluid exhausted from the hydraulic pump to the hydraulic tank and, when switched, controlling the driving, stopping, and direction change of the second hydraulic cylinder; a regeneration fluid channel for supplementing and reusing fluid returned to the hydraulic tank during a compression stroke of the first hydraulic cylinder, and a regeneration valve disposed in the regeneration fluid channel; and a pressure-compensated flow control valve which is disposed in a meter-in fluid channel of a spool of the first control valve and limits the quantity of working fluid supplied from the hydraulic pump to the first hydraulic cylinder when the first hydraulic cylinder and the second hydraulic cylinder are operated in combination.

    摘要翻译: 公开了一种施工机械的流量控制装置和流量控制方法,用于防止当挖掘机的悬臂和臂组合操作时从液压泵排出的流体的损失。 根据本发明的施工机械的流量控制装置包括:发动机; 连接到发动机的可变容量液压泵; 连接到液压泵的第一液压缸和第二液压缸; 第一控制阀,设置在液压泵的中心旁通通道中,第一控制阀处于空档状态,将从液压泵排出的液体返回到液压箱,并且当切换时,控制驱动,停止和方向变化 第一液压缸; 设置在液压泵的中心旁通通道下游的第二控制阀,第二控制阀处于空档状态,将从液压泵排出的流体返回到液压缸,并且当切换时控制驱动,停止和方向变化 的第二液压缸; 再生流体通道,用于在第一液压缸的压缩冲程期间补充和重新使用返回到液压缸的流体;以及再生阀,设置在再生流体通道中; 以及压力补偿流量控制阀,其设置在所述第一控制阀的阀芯的流入通道中,并且当所述第一液压缸和所述第一液压缸和所述第二液压缸 第二液压缸组合操作。