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173 条记录 (耗时 0.013 秒)

    HYDRAULIC CONTROL VALVE FOR CONSTRUCTION MACHINERY
    32.
    发明公开
    HYDRAULIC CONTROL VALVE FOR CONSTRUCTION MACHINERY 审中-公开
    建筑机械的液压控制阀

    公开(公告)号：EP2886878A4

    公开(公告)日：2016-04-06

    申请号：EP12891371

    申请日：2012-08-16

    申请人： VOLVO CONSTR EQUIP AB

    发明人： KU BON-SEUK

    IPC分类号： F15B13/042 ,  E02F9/22 ,  F15B13/02 ,  F15B20/00

    CPC分类号： F15B13/0426 ,  E02F9/2267 ,  E02F9/2285 ,  F15B13/025 ,  F15B13/0422 ,  F15B20/005 ,  F15B2013/0428 ,  F15B2211/30525 ,  F15B2211/329 ,  F15B2211/355 ,  F15B2211/6355 ,  Y10T137/7762

    摘要： The present invention relates to a hydraulic control valve for construction machinery that is used to maintain secondary pilot pressure which is formed proportionally to the switching of a switching device so as to be equal to or below a setting pressure of a pilot pump. The hydraulic control valve of the present invention includes: a port of the pilot pump into which the pilot pressure flows; a tank port to which the pilot pressure is drained; a valve body at which a secondary pilot pressure port that selectively communicates with the port of the pilot pump and the tank port is formed; the switching device that is pivotally mounted on the valve body; a pilot control valve that is linked through pressurization of the switching device and has a spool which forms the secondary pilot pressure proportional to the amount of switching of the switching device by communicating the port of the pilot pump and the secondary pilot pressure port with each other during the switching; a valve spring that elastically supports the spool so as to communicate the secondary pilot pressure port and the tank port with each other; and a check poppet that is disposed in an openable and closable manner at a pilot passage whose inlet side communicates with the secondary pilot pressure port and whose outlet side communicates with the port of the pilot pump.

    HYDRAULIC CONTROL SYSTEM FOR CONSTRUCTION MACHINERY
    33.
    发明公开
    HYDRAULIC CONTROL SYSTEM FOR CONSTRUCTION MACHINERY 审中-公开
    液压控制系统建筑机械

    公开(公告)号：EP2743516A4

    公开(公告)日：2015-10-14

    申请号：EP11870581

    申请日：2011-08-09

    申请人： VOLVO CONSTR EQUIP AB

    发明人： LEE CHUN-HAN

    IPC分类号： F15B13/042 ,  E02F9/22 ,  F15B13/02 ,  F15B13/044 ,  G05G9/047

    CPC分类号： E02F9/2228 ,  E02F9/2296 ,  F15B11/0423 ,  F15B11/055 ,  F15B13/0422 ,  F15B13/0426 ,  Y10T137/87225

    摘要： The present invention relates to a hydraulic control system for construction machinery capable of variably adjusting a set pressure of a relief valve, which controls a set pressure of a hydraulic system, according to a value inputted by means of pressure in the hydraulic system or the manipulation of a joystick. The hydraulic control system comprises: a flow control valve installed in a passage between a hydraulic pump and a hydraulic actuator, for controlling the driving of the hydraulic actuator by being switched by a control signal according to the manipulation of the joystick; a main relief valve installed in a passage between an upstream-side discharge passage of the hydraulic pump and a hydraulic tank, for returning a working fluid to the hydraulic tank when a high load exceeding a set pressure occurs in the system; a pressure controlling means for controlling, either continuously or in stages, a set pressure of the main relief valve; a pressure sensing means for sensing a pressure at a discharge side of the hydraulic pump; and a controller for determining the value inputted by the manipulation of the joystick, and a required set pressure for the relief valve according to the system pressure sensed by the pressure sensing means, and then outputting a control signal to the pressure controlling means to enable a set pressure of the relief valve to be variably adjusted to a determined set pressure.

    OPERATION DEVICE
    35.
    发明公开
    OPERATION DEVICE 有权
    BEDIENUNGSVORRICHTUNG

    公开(公告)号：EP2541365A1

    公开(公告)日：2013-01-02

    申请号：EP11747009.6

    申请日：2011-02-21

    申请人： Kawasaki Jukogyo Kabushiki Kaisha

    发明人： KUBO, Nobuyasu

    IPC分类号： G05G5/03 ,  E02F9/20 ,  F15B13/042 ,  F16K31/44

    CPC分类号： E02F9/2004 ,  F15B13/0422 ,  G05G5/03 ,  Y10T137/8667

    摘要： To provide an operating device capable of, even when the operation speed of an operating portion is any operation speed, such as 0, effectively generating resistance force with respect to the operation of the operating portion and capable of preventing oscillations and vibrations of the operating portion, the oscillations and vibrations being not intended by an operator.
    An operating device (50) includes: an operating portion (17) provided in a casing (1) so as to be swingable; hydraulic pilot valves (53A) and (53B) configured to operate by causing the operating portion (17) to swing; and damper portions (54) configured to generate resistance force with respect to a swing operation of the operating portion (17) when the operating portion (17) is caused to swing. Each of the damper portions (54) is configured to generate friction torque in such a manner that a plurality of swing friction plates (57) configured to swing in accordance with the operating portion (17) is pressed by a pressing spring (60) in a direction perpendicular to a swing direction of the operating portion (17) against a plurality of fixed friction plates (58) configured to be prevented from swinging.

    摘要翻译： 为了提供一种操作装置，即使在操作部分的操作速度等任何操作速度（例如0）时，能够相对于操作部分的操作有效地产生阻力并且能够防止操作部分的振动和振动 振荡和振动不是操作人员所期望的。 操作装置（50）包括：设置在壳体（1）中以便可摆动的操作部分（17）; 液压先导阀（53A）和（53B）构造成通过使操作部分（17）摆动来操作; 以及阻尼部（54），其构造成当使操作部（17）摆动时相对于操作部（17）的摆动动作产生阻力。 每个阻尼部分（54）被构造成产生摩擦转矩，使得根据操作部分（17）构造成摆动的多个摆动摩擦板（57）被按压弹簧（60）按压 与所述操作部（17）的摆动方向垂直的方向抵靠构成为防止摆动的多个固定摩擦板（58）。

    WORK MACHINE
    36.
    发明公开
    WORK MACHINE 有权
    作业机械

    公开(公告)号：EP1801424A4

    公开(公告)日：2009-05-06

    申请号：EP05782311

    申请日：2005-09-08

    申请人： HITACHI CONSTRUCTION MACHINERY

    发明人： ISHIKAWA KOUJI ,  SHIMAMURA TADATOSHI ,  SATAKE HIDETOSHI ,  ARIGA NOBUEI

    IPC分类号： F15B11/08 ,  E02F9/20 ,  E02F9/22

    CPC分类号： F15B21/005 ,  E02F9/2246 ,  E02F9/2285 ,  F15B13/0422 ,  F15B2211/20523 ,  F15B2211/20546 ,  F15B2211/329 ,  F15B2211/355 ,  F15B2211/7053

    摘要： [PROBLEMS] To provide a work machine comprising a starter for starting a prime mover from the pressure oil in a hydraulic actuator for driving a front work machine can be drained without providing a special hydraulic apparatus. [MEANS FOR SOLVING PROBLEMS] The work machine comprises a boom cylinder (34) for driving a front work machine (35), a flow control valve (8) for controlling the flow of the pressure oil supplied to the boom cylinder (34), and a pilot valve (11) driven by an engine (1) and outputting a pilot operation signal for switching the flow control valve (8) using the pressure oil delivered from a pilot hydraulic pump (10) as the primary pressure. The work machine is further provided with a fuel stop switch (31) performing supply stop control of fuel for driving the engine (1) and a switch (30) for keeping a starter motor (2) for starting the engine (1) in a drivable state depending on fuel supply stop control of the engine (1) by the fuel stop switch (31).

    WORK MACHINE
    37.
    发明公开
    WORK MACHINE 有权
    工作机器

    公开(公告)号：EP1801424A1

    公开(公告)日：2007-06-27

    申请号：EP05782311.4

    申请日：2005-09-08

    申请人： HITACHI CONSTRUCTION MACHINERY CO., LTD.

    发明人： ISHIKAWA, Kouji ., Hitachi Constrct. Machinery Co. Ltd. ,  SHIMAMURA, Tadatoshi , Hitachi Constrct. Machinery Co. Ltd. ,  SATAKE, Hidetoshi , Hitachi Constrct. Machinery Co. Ltd. ,  ARIGA, Nobuei ., Hitachi Constrct. Machinery Co. Ltd.

    IPC分类号： F15B11/08 ,  E02F9/24

    CPC分类号： F15B21/005 ,  E02F9/2246 ,  E02F9/2285 ,  F15B13/0422 ,  F15B2211/20523 ,  F15B2211/20546 ,  F15B2211/329 ,  F15B2211/355 ,  F15B2211/7053

    摘要： Object: To provide a workmachine having a startermotor for starting a prime mover, which without provision of any special hydraulic equipment, allows to drain pressure oil still remaining in a hydraulic actuator for driving a front attachment.
    Means for Achieving the Object: A work machine is provided with a boom cylinder 34 for driving a front attachment 35, a flow rate control valve 8 for controlling a flow of pressure oil to be supplied to the boom cylinder 34, and a pilot valve 11 for producing an output of a pilot control signal, which serves to switch the flow rate control valve 8, by using, as a primary pressure, pressure oil delivered from a pilot hydraulic pump 10 driven by an engine 1. The work machine is also provided with a fuel stop switch 31 for performing stop control on a supply of fuel, which drives the engine 1, and further, with a switch 30 for maintaining drivable a starter motor 2, which starts the engine 1, responsive to the stop control of the supply of fuel to the engine 1 by the fuel stop switch 31.

    摘要翻译： 目的：提供一种具有用于启动原动机的起动电动机的工作机，其在没有提供任何特殊液压设备的情况下允许排出仍留在用于驱动前附件的液压致动器中的压力油。 用于解决课题的手段作业机械具备：驱动前部附属装置35的动臂油缸34，控制向动臂油缸34供给的压力油的流量的流量控制阀8，以及先导阀11 用于通过使用由发动机1驱动的先导液压泵10输送的压力油作为主压力来产生用于切换流量控制阀8的先导控制信号的输出。还提供了作业机械 具有用于对驱动发动机1的燃料供应进行停止控制的燃料停止开关31，并且还具有用于保持启动发动机1的启动马达2的可驱动的开关30，以响应 通过燃料停止开关31向发动机1供应燃料。

    Fluid-operated actuation device
    38.
    发明公开
    Fluid-operated actuation device 审中-公开
    技术流体驱动杆

    公开(公告)号：EP1580439A3

    公开(公告)日：2007-05-09

    申请号：EP05102309.1

    申请日：2005-03-22

    申请人： SALAMI S.p.A.

    发明人： Garcea, Rocco

    IPC分类号： F15B13/042

    CPC分类号： F15B13/0422

    摘要： A fluid-operated actuation device (1), comprising at least one supporting body (2), which is associated with at least one substantially through receptacle (3) provided with first and second mutually opposite open ends, at least one preassembled push rod assembly (4), which is inserted so that it can slide along the receptacle (3) at the first end, means (5) for actuating the sliding of the push rod assembly (4) along the receptacle (3) at least toward the second end, and at least one preassembled reduction valve assembly (6), which is associated with the supporting body (2) at the second end and comprises a valve body (7) provided with at least one intake port (7a) for a working fluid at an operating pressure, with at least one port (7b) for the output of the working fluid at a reduced pressure toward a user device, and with at least one discharge port (7c) for the fluid and at least one flow control element (8), which is accommodated within the valve body, can move alternately between an inactive configuration and an active configuration, is interposed between the ports and cooperates with the push rod assembly, the flow control element (8) being adapted to close at least partially the intake port (7a) and to connect the output and discharge ports in the inactive configuration and to close at least partially the discharge port (7c) and connect the intake (7a) and output ports (7b) in the active configuration.

    Manipulator with electromagnetic detent for the driving servo-control of hydraulic mechanisms
    39.
    发明公开
    Manipulator with electromagnetic detent for the driving servo-control of hydraulic mechanisms 有权
    电动自行车

    公开(公告)号：EP1500826A2

    公开(公告)日：2005-01-26

    申请号：EP04014452.9

    申请日：2004-06-21

    申请人： Walvoil S.p.A.

    发明人： Allegretti, Mirco ,  Di Vico, Felice

    IPC分类号： F15B13/042 ,  G05G5/00

    CPC分类号： F15B13/0422 ,  G05G5/06 ,  Y10T74/20201 ,  Y10T74/20636 ,  Y10T74/20666 ,  Y10T137/87064 ,  Y10T137/87072

    摘要： The invention refers to the field of servo-controls for driving hydraulic equipment with electromagnetic coupling, and more precisely it refers to a manipulator with detent to lock the system in particular positions in order to allow its continuous operation, with possible actions on pushers next to the one pressed with active coupling. The detent is composed of an electromagnet (8) integral with the shaft (3) of the manipulator (2) connected through a joint (6) to the servo-control body and of a coupling plate (9) secured to the servo-control body by means of a peg or joint (10) whose axis (13) is coaxial with the joint axis (11).

    摘要翻译： 本发明涉及用于驱动具有电磁耦合的液压设备的伺服控制领域，更准确地说，它是指具有制动器的操纵器，以将系统锁定在特定位置，以允许其连续操作，可能的作用在旁边的推动器 一个用主动耦合按压。 制动器由与机械手（2）的轴（3）整体形成的电磁体（8）组成，该操纵器（2）通过接头（6）连接到伺服控制主体，以及联接板（9）固定到伺服控制器 主体通过其轴线（13）与接头轴线（11）同轴的栓或接头（10）。