HYDRAULIC CIRCUIT OF WORKING TRUCK
    43.
    发明公开
    HYDRAULIC CIRCUIT OF WORKING TRUCK 有权
    液压回路中的工作旅行车

    公开(公告)号:EP1584824A4

    公开(公告)日:2008-01-16

    申请号:EP02792059

    申请日:2002-12-27

    摘要: A hydraulic circuit of working truck comprising a traveling body (1), a slewing body (2) provided turnably on the traveling body (1), hydraulic sources (21, 28) provided on the slewing body (2), a plurality of hydraulic cylinders (11) for work provided on the traveling body (1) to be driven with pressure oil from the hydraulic sources (28), a control valve (22) for controlling the flow of pressure oil from the hydraulic sources (28) to the hydraulic cylinders (11) for work, an operating means (26) for commanding the control valve (22) to be driven, valve units (12a, 12b) with check valve provided in association with the plurality of hydraulic cylinders (11) for work and permitting/blocking outflow of pressure oil from each hydraulic cylinder (11) for work, means (41, 42) for delivering a telescopic action permitting command or a telescopic action prohibiting command to each hydraulic cylinder (11) for work, and means (34-36, 43-48) for controlling the valve units (12a, 12b) such that the function as a check valve is made ineffective upon delivery of the telescopic action permitting command from the commanding means (41) to allow outflow of pressure oil from the hydraulic cylinders (11) for work and to block outflow of pressure oil from the hydraulic cylinders (11) for work by means of the check valve upon delivery of the telescopic action prohibiting command.

    Hydraulic circuit for working machine
    44.
    发明公开
    Hydraulic circuit for working machine 有权
    Hydraulischer Kreislauffüreine Baumaschine

    公开(公告)号:EP1736672A2

    公开(公告)日:2006-12-27

    申请号:EP06115088.4

    申请日:2006-06-07

    IPC分类号: F15B20/00

    摘要: A hydraulic circuit for a working machine includes hydraulic actuators (9,10) which respectively drive a plurality of kinds of working devices and which are driven by a drive circuit having circuit states that correspond to the working devices, a directional control valve unit (19) which, when one of the working devices is attached to the attachment, switches in response to a signal from a controller (21) to select one of the circuit states, a detection sensor (23) that detects the actual circuit state, and a display (24) operated by the controller. The controller activates the display when the detected actual circuit state and the selected circuit state do not match.

    摘要翻译: 一种用于工作机械的液压回路,包括液压致动器(9,10),分别驱动多种工作装置,并由具有对应于作业装置的电路状态的驱动电路驱动;方向控制阀单元(19 )当所述工作装置中的一个附接到所述附件时,响应于来自控制器(21)的信号切换以选择所述电路状态之一,检测所述实际电路状态的检测传感器(23)和 显示器(24)由控制器操作。 当检测到的实际电路状态和所选电路状态不匹配时,控制器激活显示。

    Hydraulic control device of an excavator with improved loading performance on a slope
    45.
    发明公开
    Hydraulic control device of an excavator with improved loading performance on a slope 有权
    Hydraulische SteuereinrichtungfürBagger mit verbesserter Ladeleistung an Steigungen

    公开(公告)号:EP1672128A2

    公开(公告)日:2006-06-21

    申请号:EP05292641.7

    申请日:2005-12-12

    IPC分类号: E02F9/22

    摘要: A hydraulic control device of an excavator is provided for controlling combined operation of boom-raising and swing on a slope. A swing priority valve (20) is provided on a pressured fluid supply line (8) that connects a first hydraulic pump (1) to a boom high-speed control valve (7). If an excavator performs its tasks on a slope, the swing priority valve (20) is automatically shifted under a control of an electronic controller (28) into a throttling position to thereby restrict hydraulic flow through the boom high-speed control valve (7) so that an increased amount of hydraulic flow can be supplied to a swing motor (14), thus increasing a swing operating pressure more rapidly than a boom operating pressure and consequently facilitating combined operation of boom-raising and swing on a slope.

    摘要翻译: 提供挖掘机的液压控制装置,用于控制悬臂升高和斜坡摆动的组合操作。 在将第一液压泵(1)连接到动臂高速控制阀(7)的加压流体供给管线(8)上设置有摆动优先阀(20)。 如果挖掘机在斜坡上执行任务,则摆动优先阀(20)在电子控制器(28)的控制下自动移动到节流位置,从而限制通过悬臂高速控制阀(7)的液压流动, 从而可以向摆动马达(14)提供增加的液压流量,从而比起动臂工作压力更快地增加摆动操作压力,从而有利于在斜坡上起重臂和摆动的组合操作。

    Velocity based electronic control system for operating hydraulic equipment
    47.
    发明公开
    Velocity based electronic control system for operating hydraulic equipment 有权
    Elektronische Steuereinrichtung auf Basis von Geschwindigkeit zur Steuerung eines Hydraulikkreises

    公开(公告)号:EP1626182A1

    公开(公告)日:2006-02-15

    申请号:EP05022850.1

    申请日:2003-09-23

    IPC分类号: F15B11/00 F15B21/08

    摘要: A control system for operating a hydraulic system (10) includes a user input device (47) which generates an input signal indicating desired motion, such as a desired velocity, of a hydraulic actuator (16). A mapping routine (50) converts the input signal into a command. A valve opening routine (56) transforms the command into a flow coefficient which characterizes fluid flow through the valve assembly (25) and from the flow coefficient produces a set of control signals designating levels of electric current to apply to valves (21-24) within the valve assembly. A pressure controller (64) regulates pressure in the supply line (14) in response to the command. When the hydraulic system (10) has a plurality of functions (11,20), the control system adjusts each command to equitably apportion fluid to each function, when the aggregate flow being demanded by the functions exceeds the total flow available from a source.

    摘要翻译: 用于操作液压系统(10)的控制系统包括用户输入装置(47),其生成指示液压致动器(16)的期望运动(例如期望速度)的输入信号。 映射例程(50)将输入信号转换为命令。 阀打开程序(56)将命令转换成表征通过阀组件(25)的流体流动的流量系数,并且根据流量系数产生一组控制信号,其指定施加到阀(21-24)的电流水平, 在阀组件内。 压力控制器(64)响应于该命令来调节供应管线(14)中的压力。 当液压系统(10)具有多个功能(11,20)时,当由功能要求的总流量超过从源获得的总流量时,控制系统调整每个命令以均衡地将流体分配给每个功能。

    HYDRAULIC DEVICE
    48.
    发明公开
    HYDRAULIC DEVICE 审中-公开
    液压装置

    公开(公告)号:EP1600641A1

    公开(公告)日:2005-11-30

    申请号:EP04716710.1

    申请日:2004-03-03

    IPC分类号: F15B11/02

    摘要: A fluid pressure apparatus capable of achieving stable pressing is obtained. The fluid pressure apparatus comprises a fluid pressure pump (1) driven by an electric motor (6) and rotatable in both directions. Both ports (14, 16) of a fluid pressure cylinder (12) are respectively connected to both ports (2, 4) of the fluid pressure pump (1) via a pair of flow paths (8, 10). A throttle (32) is disposed on a leak flow path (30) which communicates a high pressure side with a low pressure side of the pair of flow paths (8, 10), while the pressing operation is performed by a fluid pressure cylinder (12). Furthermore, the fluid pressure apparatus comprises a position control circuit (38) for controlling the electric motor (6) based on a position detected by a movement detection sensor (34) for detecting movement by the fluid pressure cylinder (12), a pressure control circuit (40) for controlling the electric motor (6) based on pressure in the flow path (10) on the high pressure side detected by the pressure sensor (36), and a switch circuit (42) for switching control by the poison control circuit (38) to control by the pressure control circuit (40).

    摘要翻译: 获得能够实现稳定压制的流体压力设备。 该流体压力装置包括由电动机(6)驱动并且可在两个方向上旋转的流体压力泵(1)。 流体压力缸(12)的两个口(14,16)分别经由一对流路(8,10)与流体压泵(1)的两个口(2,4)连接。 在使一对流路(8,10)的低压侧与高压侧连通的泄漏流路(30)上配置有节流阀(32),该加压操作由流体压缸 12)。 此外,流体压力装置包括:位置控制电路(38),其基于由用于检测流体压力缸(12)的移动的移动检测传感器(34)检测到的位置来控制电动机(6);压力控制 基于由压力传感器36检测出的高压侧流路10内的压力来控制电动机6的开关电路40以及用于通过中毒控制切换控制的开关电路42, 电路(38)由压力控制电路(40)控制。

    Verlustarmer Antrieb für einen hydraulischen Aktuator
    49.
    发明公开
    Verlustarmer Antrieb für einen hydraulischen Aktuator 失效
    Verlustarmer Antriebfüreinen hydraulischen Aktuator

    公开(公告)号:EP1288507A2

    公开(公告)日:2003-03-05

    申请号:EP02023249.2

    申请日:1996-12-21

    发明人: Zervas, Bernhard

    IPC分类号: F15B11/17 F15B7/00

    摘要: Die Erfindung betrifft einen Antrieb für einen hydraulischen, doppelt wirkenden Aktuator (1), der zwei Arbeitskammern (9,11) umfasst, deren Volumen veränderbar ist und die mittels eines durch Volumenveränderung angetriebenen Aktuatorelements (5) voneinander getrennt sind, und der zwei die Arbeitskammern (9,11) mit einem Hydraulikmedium versorgenden Pumpen (15,15') umfasst. Dieser zeichnet sich dadurch aus, dass jeder Pumpe (15,15') jeweils eine als Elektromotor (19,19') ausgebildete Antriebseinrichtung (17,17') zur Abgabe voneinander unterschiedlich einstellbarer Fördermengen zugeordnet ist, dass die Elektromotoren (19,19') über jeweils eine Steuerleitung (37,37') mit einer Ansteuerung (35) verbunden sind, und dass jeder Arbeitskammer (9,11) jeweils eine Pumpe (15,15') direkt zugeordnet ist, wobei die jeweilige Pumpe (15,15') aus einem Tank (25) in die Arbeitskammer (9,11) fördert oder das Hydraulikmedium aus der Arbeitskammer (9,11) über die Zuleitung (13,13') zu der jeweiligen Pumpe (15,15') zurückgedrückt wird.

    摘要翻译: 液压流体由第一双向泵(15)供应,并且第二泵(15')也以受控的速度旋转。 每个泵都提供一个独立的入口(61.1或61.2),最好是四位阀装置(59),其出口(63.1,63.1'等)提供分开的双作用活塞致动器(1.1-1.3)和液压马达 1.4)。 这些泵由独立的电动机(19,19')驱动,受到公共控制单元(57)的驱动,公共控制单元(57)包含用于每个致动器的驱动器和处理电路,该传感器具有传感器(39),可选地结合有数字转换器用于发信号通知位置,速度和 /或活塞(5)或活塞杆(7)的加速度。

    Förderstromregler
    50.
    发明公开

    公开(公告)号:EP0785363A3

    公开(公告)日:1999-04-28

    申请号:EP96118402.5

    申请日:1996-11-15

    申请人: Hydrokraft GmbH

    IPC分类号: F15B11/04 G05D7/06

    摘要: Die Erfindung betrifft einen Förderstromregler für eine Hydraulikmaschine (P) mit veränderbarem Fördervolumen, wobei die Wirkseiten (1a, 1b) des zweiseitigen Stellgliedes (1) der Hydraulikmaschine (P) über Servoleitungen (13a, 13b) und ein Servoventil (2) wahlweise mit der Steuerdruckleitung (12) bzw. dem Tank (T) verbindbar sind, und in den Servoleitungen (13a, 13b) jeweils ein Druckregler (4a, 4b) angeordnet ist, welcher die Verbindung der zugeordneten Wirkseite (1a, 1b) mit dem zugeordneten Anschluß (A, B) der Hydraulikmaschine (P) statt mit dem Servoventil (2) oder dem Verschluß der jeweiligen Steuerleitung (13) ermöglicht. Es wird ein gattungsgemäßen Druckregler für eine verstellbare Hydraulikmaschine so weitergebildet, daß die Verstellung der Hydraulikmaschine mittels der überlagerten Druckregelung optimal schnell möglich ist und der Förderstromregler klein und kostengünstig hergestellt werden kann. Dies wird erreicht, indem von den Servoleitungen (13a, 13b) Direktabflußleitungen (14a, 14b) über wenigstens ein Druckbegrenzungsventil (9, 11) zum Tank (T) abzweigen.

    摘要翻译: 液压活塞(1)的两侧(1a,1b)通过伺服管线(13a,13b)通过压力调节器(4a,4b)和电磁伺服阀(2)连接到控制压力管线(12) 从单独的泵(PS)或罐(T)。 为了降低对伺服阀的压力和流量的要求,通过止回阀(10a,10b)和单个限压阀(11)从伺服线路提供附加的直接排水管路(14a,14b)到 坦克。 伺服电机可以在四象限模式和/或闭环中运行。