DEVICE AND METHOD FOR CONTROLLING STOP OF HYDRAULIC PRESS AND DEVICE AND METHOD FOR DETECTING TROUBLE OF SPEED SELECTOR VALVE
    3.
    发明公开
    DEVICE AND METHOD FOR CONTROLLING STOP OF HYDRAULIC PRESS AND DEVICE AND METHOD FOR DETECTING TROUBLE OF SPEED SELECTOR VALVE 有权
    方法和设备,用于控制极端位置的液压机进行错误检测方法和设备,快速拨号VALVE

    公开(公告)号:EP1279488A4

    公开(公告)日:2005-03-30

    申请号:EP01908252

    申请日:2001-03-02

    申请人: AMADA CO LTD

    摘要: A method of controlling the stop of a hydraulic press, comprising the steps of controlling a servo-motor (37) by a rod pressure hold instruction part (67) to reversely rotate a bidirectional pump (29) so as to feed the hydraulic oil not exceeding a pressure caused by the self-weight of a ram (5U) to a bidirectional pump side pipe (49) in order to increase a pressure, and reducing a pressure difference between a pressure inside a pipe (43) for a speed selector valve (47) on the rod side cylinder cyamber side and a pressure inside a pipe (49) on the bidirectional pump side for the speed selector valve (47) to reduce a shock caused when the speed selector valve (47) is switched so as to stop the ram (5U) at a specified position.

    摘要翻译: 的杆压力保持指令部(67)控制的伺服电动机(37)旋转的相反方向的双向泵(29),并与压力供给液压油,其大小限制在压力自身重量的应用通过 一个RAM(5U),以双向泵侧管道系统(49)增加压力。 的压力之间的速度切换阀(47)和压力的杆侧缸室侧配管(43)在高速开关阀的双向泵侧管道系统(49)(47)差减小, 减小,从而冲击产生当切换速度切换阀(47)和在预定位置处停止压头(5U)。

    Control system for hydraulic circuit means including a variable displacement pump and actuator means
    4.
    发明公开
    Control system for hydraulic circuit means including a variable displacement pump and actuator means 失效
    Regreungsystemfürhydraulischen Kreislauf mit Verstellpumpe und Motor。

    公开(公告)号:EP0061759A1

    公开(公告)日:1982-10-06

    申请号:EP82102637.4

    申请日:1982-03-29

    摘要: A control system (12, 70, 130, 160) for hydraulic circuit means (2, 64) having a variable displacement hydraulic pump (4, 60), and actuator means (6) driven by the pump, in which pump control means (22, 74. 164) controls a displacement volume varying member (8, 66) of the pump based on an operating signal (X L ) giving a command with respect to the position thereof and a detector signal (Y L ) indicative of the actual position thereof while restricting the operating speed of the member to a level below a predetermined maximum speed. The control system has maximum speed setting means (20, 72, 132. 162) previously setting a first predetermined maximum speed (a,) and a second predetermined maximum speed (a 2 . a3) higher than the first predetermined maximum speed for the operating speed of the variable displacement volume varying member (8, 66) and operative to select the first predetermined maximum speed (α 1 ) when the direction of operation of the actuator means (6) commanded by the operating signal agrees with the actual direction of operation thereof, and select the second predetermined maximum speed (α 2 , a3) when the position of the displacement volume varying member commanded by the operating signal is neutral or when the direction of operation of the actuator means commanded by the operating signal is opposite to the actual direction of operation thereof. The pump control means is constructed to effect the speed control of the displacement volume varying member based on the first or second predetermined maximum speed selected by the maximum speed setting means.

    摘要翻译: 一种用于具有可变排量液压泵(4,60)的液压回路装置(2,64)的控制系统(12,70,130,160)以及由泵驱动的致动器装置(6),泵控制装置 根据给出相对于其位置的指令的操作信号(XL)和指示其实际位置的检测器信号(YL)控制泵的排量体积变化部件(8,66) 同时将构件的操作速度限制在低于预定最大速度的水平。 控制系统具有预先设定比第一预定最大速度(α2,α3)高的第一预定最大速度(α1,α3)的最大速度设定装置(20,72,132,162) 当由操作信号命令的致动器装置(6)的操作方向与实际方向一致时,可变排量容积变化构件(8,66)的操作速度可操作以选择第一预定最大速度(α1) 并且当由操作信号指令的位移量变化构件的位置为中性或者由操作信号指示的致动器装置的操作方向相反时,选择第二预定最大速度(α2,α3) 到实际的操作方向。 泵控制装置被构造成基于由最大速度设定装置选择的第一或第二预定最大速度来实现排量体积变化构件的速度控制。

    FLOW CONTROL SYSTEM FOR A HYDRAULIC PUMP OF CONSTRUCTION MACHINERY

    公开(公告)号:EP2587072A4

    公开(公告)日:2018-01-17

    申请号:EP10854132

    申请日:2010-06-28

    摘要: A flow control system of a hydraulic pump for a construction machine is provided, which can variably control a discharge flow rate of the hydraulic pump in accordance with load pressure generated by a hydraulic actuator such as a boom cylinder. According to the flow control system of a hydraulic pump, the discharge pressure of the hydraulic pump and the operation rate of the operation lever for the hydraulic actuators is detected, and standard load pressures of the respective hydraulic actuators are set. If the discharge pressure of the hydraulic pump is higher than the preset standard load pressures of the hydraulic actuators, the discharge flow rate of the hydraulic pump is proportionally reduced for the same operation rate in accordance with degrees of loads generated by the hydraulic actuators, while if the discharge pressure of the hydraulic pump is lower than the standard load pressures of the hydraulic actuators, the discharge flow rate of the hydraulic pump is controlled in proportion to the operation rate.

    Verfahren und Regelschaltung zur Regelung einer Druckmittelzufuhr für einen hydraulischen Aktor
    9.
    发明公开
    Verfahren und Regelschaltung zur Regelung einer Druckmittelzufuhr für einen hydraulischen Aktor 有权
    用于控制液压致动器的压力介质供给方法和控制电路

    公开(公告)号:EP2192309A3

    公开(公告)日:2014-04-23

    申请号:EP09014791.9

    申请日:2009-11-27

    申请人: Robert Bosch GmbH

    IPC分类号: F15B11/02 F15B9/04

    摘要: Erfindungsgemäß wird ein Verfahren zur Regelung einer Druckmittelzufuhr für einen hydraulischen Aktor (11) einer zyklisch arbeitenden Maschine bereitgestellt. Der Aktor wird von einer Verstellpumpe (13) mit einer Druckmittelmenge versorgt, wobei die Verstellpumpe von einem drehzahlgesteuerten Elektromotor (14) angetrieben wird. Der Druck bzw. die Druckmittelmenge wird von einem Pumpenregler (41) durch Ansteuern der Volumeneinstellung der Verstellpumpe geregelt. Das Verfahren weist einen Schritt des Erstellens eines Drehzahl-Profils zum Verändern der Drehzahl des Elektromotors (14) während eines Zyklus auf. Zudem ist ein Schritt des Ansteuerns der Drehzahl des Elektromotors (14) und der Volumeneinstellung der Verstellpumpe (13), bei dem innerhalb eines Zyklus der Maschine der Elektromotor (14) mit einem Vorgabewert für die Drehzahl gemäß dem erstellten Drehzahl-Profil angesteuert wird, vorgesehen. Es ist zudem ein Schritt des Ermittelns der Drehzahlabweichung (nl1,nl2) des Elektromotors (14) vorgesehen. Die Drehzahlabweichung ergibt sich aus der Abweichung der Drehzahl (n) des Elektromotors (14) von einem Sollwert (ns) für die Drehzahl. Der Schritt des Ansteuerns der Drehzahl des Elektromotors und der Volumeneinstellung der Verstellpumpe erfolgt in Abhängigkeit der ermittelten Drehzahlabweichung.

    FLOW CONTROL SYSTEM FOR A HYDRAULIC PUMP OF CONSTRUCTION MACHINERY
    10.
    发明公开
    FLOW CONTROL SYSTEM FOR A HYDRAULIC PUMP OF CONSTRUCTION MACHINERY 审中-公开
    ÜR INE INE INE INE INE INE INE INE INE INE INE INE INE INE INE INE INE INE INE

    公开(公告)号:EP2587072A1

    公开(公告)日:2013-05-01

    申请号:EP10854132.7

    申请日:2010-06-28

    摘要: A flow control system of a hydraulic pump for a construction machine is provided, which can variably control a discharge flow rate of the hydraulic pump in accordance with load pressure generated by a hydraulic actuator such as a boom cylinder. According to the flow control system of a hydraulic pump, the discharge pressure of the hydraulic pump and the operation rate of the operation lever for the hydraulic actuators is detected, and standard load pressures of the respective hydraulic actuators are set. If the discharge pressure of the hydraulic pump is higher than the preset standard load pressures of the hydraulic actuators, the discharge flow rate of the hydraulic pump is proportionally reduced for the same operation rate in accordance with degrees of loads generated by the hydraulic actuators, while if the discharge pressure of the hydraulic pump is lower than the standard load pressures of the hydraulic actuators, the discharge flow rate of the hydraulic pump is controlled in proportion to the operation rate.

    摘要翻译: 提供了一种用于建筑机械的液压泵的流量控制系统,其可以根据由诸如动臂缸的液压致动器产生的负载压力可变地控制液压泵的排出流量。 根据液压泵的流量控制系统,检测液压泵的排出压力和液压致动器的操作杆的操作速度,并设定各液压致动器的标准负荷压力。 如果液压泵的排出压力高于液压致动器的预设标准负载压力,则液压泵的排出流量根据由液压致动器产生的负载的程度相同的运行速率成比例地减小,而 如果液压泵的排出压力低于液压致动器的标准负荷压力,则液压泵的排出流量与操作速率成比例地被控制。