AUTOMATIC TUNING OF VALVE FOR REMOTE CONTROLLED DEMOLITION ROBOT

    公开(公告)号:EP3365561A1

    公开(公告)日:2018-08-29

    申请号:EP16857886.2

    申请日:2016-10-19

    申请人: Husqvarna AB

    IPC分类号: F15B19/00 E02F9/22 E04G23/08

    摘要: A remote controlled demolition robot (10) comprising a controller (17) and at least one control switch (24, 25, 26) for providing a control signal that is received by the controller (17), wherein the controller (17) is configured to control the operation of a corresponding robot part (10a, 11, 14, 15). The controller (17) is further configured to: receive a pressure sensor reading from a pressure sensor (13b) for a proportional hydraulic valve (13a), said pressure sensor reading indicating a standby pressure; provide the control signal to the valve (13a); and increase a signal level of the control signal provided to the valve (13a) until a change in the pressure is detected; determine a starting offset for the valve (13a), said starting offset corresponding to the current signal level of the control signal.

    STELLANTRIEB FÜR EIN REGELVENTIL, INSBESONDERE DAMPFTURBINENREGELVENTIL UND VERFAHREN ZUM BETREIBEN DESSELBEN
    2.
    发明公开
    STELLANTRIEB FÜR EIN REGELVENTIL, INSBESONDERE DAMPFTURBINENREGELVENTIL UND VERFAHREN ZUM BETREIBEN DESSELBEN 审中-公开
    STELLANTRIEBFÜREIN REGELVENTIL,INSBESONDERE DAMPFTURBINENREGELVENTIL UND VERFAHREN ZUM BETREIBEN DESSELBEN

    公开(公告)号:EP3234373A1

    公开(公告)日:2017-10-25

    申请号:EP15785149.4

    申请日:2015-10-28

    申请人: Voith Patent GmbH

    发明人: SCHABER, Hubert

    摘要: The invention relates to an actuating drive for a control valve, in particular a steam turbine control valve, comprising a working cylinder, which has a piston and a piston rod, which is connected to the piston and which forms an actuator for the control valve, wherein the piston bounds a first pressure chamber of the working cylinder and the first pressure chamber has a first pressure connection for introducing a pressurized working medium in order to move the piston together with the piston rod against the force of a spring associated with the working cylinder by the application of pressure; comprising an external working-medium circuit, to which the working cylinder is connected in order to selectively introduce the working medium into or lead the working medium out of the first pressure chamber; wherein the external working-medium circuit has a working-medium pump driven by a motor; and the working-medium pump is connected to the first pressure connection of the first pressure chamber by means of a pressure line connected to a pressure side of the working-medium pump, wherein a check valve or stop valve that opens in the direction of the first pressure connection is provided in the pressure line. The actuating drive according to the invention is characterized in that a short-circuit line branches off from the pressure line before the check valve or stop valve in the flow direction of the working medium, which short-circuit line connects the pressure line to a suction side of the working-medium pump, the working cylinder thus being bypassed, and a short-circuit valve is arranged in the short-circuit line, by means of which short-circuit valve the short-circuit line can be selectively blocked so as to prevent flow of the working medium to the suction side.

    摘要翻译: 本发明涉及一种用于控制阀,尤其是蒸汽轮机控制阀的驱动驱动装置,该驱动驱动装置包括工作缸,该工作缸具有活塞和活塞杆,活塞杆连接到活塞并且形成用于控制阀的致动器, 其中所述活塞界定所述工作缸的第一压力室并且所述第一压力室具有用于引入加压工作介质的第一压力连接部,以便使所述活塞与所述活塞杆一起抵抗与所述工作缸相关联的弹簧的力 通过施加压力; 包括外部工作介质回路,所述工作缸连接到所述外部工作介质回路以选择性地将所述工作介质引入所述工作介质或将所述工作介质引出所述第一压力腔; 其中所述外部工作介质回路具有由马达驱动的工作介质泵; 并且借助于连接到工作介质泵的压力侧的压力管路将工作介质泵连接到第一压力腔室的第一压力连接部,其中止回阀或截止阀沿着 在压力管路中提供第一压力连接。 根据本发明的致动驱动装置的特征在于,在工作介质的流动方向上,在止回阀或截止阀之前从压力管路分支出短路线,该短路线路将压力管线连接到吸入口 因此工作气缸的旁路被旁路,并且短路管路中设置有短路阀,通过该短路阀可以选择性地阻断短路管路以便 防止工作介质流向吸入侧。

    HYBRID EXCAVATOR HAVING A SYSTEM FOR REDUCING ACTUATOR SHOCK
    3.
    发明公开
    HYBRID EXCAVATOR HAVING A SYSTEM FOR REDUCING ACTUATOR SHOCK 有权
    具有减少致动器冲击的系统的混合式挖掘机

    公开(公告)号:EP2772590A1

    公开(公告)日:2014-09-03

    申请号:EP11874656.9

    申请日:2011-10-27

    发明人: KIM, Jae-Hong

    IPC分类号: E02F9/22 E02F3/43 E02F3/42

    摘要: Disclosed is a hybrid excavator which reduces the impact generated at the start of the operation of the boom cylinder, or the like, of a hybrid excavator. The hybrid excavator according to the present invention comprises: a hydraulic pump motor connected to an electric motor and operated in the forward or reverse direction; a hydraulic cylinder connected to the hydraulic pump motor and operated in an expanding manner; a first and second hydraulic valve installed in a first and second passage, respectively, between the hydraulic pump motor and the hydraulic cylinder, for blocking the first and second passages when switched by an external control signal; a third hydraulic valve installed in the connecting path connected to first and second dividing passages, which are respectively divided and connected to the upstream first and second passages of the first and second hydraulic valves and to the downstream first and second passages of the first and second hydraulic valves, and compensating for or bypassing the flow of the hydraulic fluid when switched in order to cope with the difference in flow generated by the difference in the sectional areas of the large chamber and the small chamber of the hydraulic cylinder; and a first and second pilot chamber supplying pressure to a first and second passage through a pilot signal pressure in order to switch the third hydraulic valve, and which has pilot chambers thereof having different sectional areas.

    摘要翻译: 本发明公开了一种混合动力挖掘机,该混合动力挖掘机减少混合动力挖掘机的动臂油缸等的动作开始时产生的冲击。 根据本发明的混合动力挖掘机包括:液压泵马达,其连接到电动马达并沿正向或反向方向操作; 液压缸,其连接到所述液压泵马达并以展开方式操作; 第一和第二液压阀,分别安装在液压泵马达和液压缸之间的第一和第二通道中,用于当通过外部控制信号切换时阻塞第一和第二通道; 安装在连接到第一和第二分隔通道的连接通道中的第三液压阀,其分别连接到第一和第二液压阀的上游第一和第二通道以及第一和第二通道的下游第一和第二通道 液压阀,并且在切换时补偿或绕过液压流体的流动,以便应对由液压缸的大腔室和小腔室的截面积的差异所产生的流量差; 以及第一和第二先导室,其通过先导信号压力向第一和第二通道供给压力,以便切换第三液压阀,并且其先导室具有不同的截面面积。

    CONTROL DEVICE FOR A HYDRAULIC PUMP OF CONSTRUCTION MACHINERY
    7.
    发明公开
    CONTROL DEVICE FOR A HYDRAULIC PUMP OF CONSTRUCTION MACHINERY 有权
    STEUERUNGSEINHEITFÜREINE HYDRAULIKPUMPE EINER BAUMASCHINE

    公开(公告)号:EP2589822A1

    公开(公告)日:2013-05-08

    申请号:EP10854135.0

    申请日:2010-06-30

    摘要: A negative control type hydraulic pump control device mounted on a construction machine such as an excavator is provided. The hydraulic pump control device includes an accumulator storing a control signal pressure, a solenoid valve supplying any one of the signal pressure from the accumulator and a negative signal pressure to the regulator when a solenoid valve is shifted in accordance with applying of the control signal, and an operation lever locking unit turning ON/OFF the control signal applied to the solenoid valve in accordance with a driver's operation, wherein an inclination angle of a swash plate of a hydraulic pump is maintained with a minimum capacity by compensating for the negative signal pressure caused by hydraulic fluid supplied from the accumulator through shifting of the solenoid valve when an engine starts.

    摘要翻译: 提供安装在挖掘机等施工机械上的负控制型液压泵控制装置。 液压泵控制装置包括存储控制信号压力的蓄能器,当根据施加控制信号移动电磁阀时,将来自蓄能器的信号压力中的任何一个提供给调节器的电磁阀,以及负信号压力, 以及操作杆锁定单元,其根据驾驶员的操作来接通/关闭施加到电磁阀的控制信号,其中通过补偿负信号压力来维持液压泵的斜盘的倾斜角度具有最小容量 由发动机起动时通过电磁阀的移动从蓄能器供给的液压流体引起的。

    Energieeffizienter hydraulischer Antrieb für die Linearbewegung eines Massekörpers
    9.
    发明公开

    公开(公告)号:EP2474745A2

    公开(公告)日:2012-07-11

    申请号:EP11193675.3

    申请日:2011-12-15

    IPC分类号: F15B1/02 F15B21/14

    摘要: Eine hydraulisch angetriebene Anordnung zum linearen Bewegen eines Massekörpers (10), bestehend aus zwei parallel zueinander geschalteten doppelt wirkenden Arbeitszylindern (11, 12), wobei der eine Arbeitszylinder als Steuerzylinder (11) für die Steuerung der eine Beschleunigungsphase, eine Fahrphase und eine Bremsphase aufweisenden Bewegung des Massekörpors (10) eingerichtet ist und der andere Arbeitszylinder als Antriebszylinder (12) an einen hydraulischen Akkumulator (25) als Energiespeicher angeschlossen ist derart, dass der Akkumulator (25) während der Beschleunigungsphase des Massekörpers (10) die Antriebsenergie für den Antriebszylinder (12) liefert und der Antriebszylinder (12) in der Bremsphase des Massekörpers (10) als Pumpe zum Aufladen des hydraulischen Akkumulators (25) dient, ist dadurch gekennzeichnet, dass Steuerzylinder (11) und Antriebszylinder (12) jeweils einen Kolben (17) mit einseitiger an den Massekörper (10) gekoppelter Kolbenstange (18) aufweisen und dass Steuerzylinder (11) und Antriebszylinder (12) jeweils mittels hydraulisch voneinander getrennter, unabhängiger und jeweils ein Steuerventil (13) bzw. eine drei Steuerkanten (26) bzw. vier Steuerkanten (26) aufweisender Steuerkreise gesteuert sind.

    摘要翻译: 液压驱动装置具有控制缸(11)和驱动缸(12),每个缸具有带有单侧活塞杆(18)的活塞(17)。 活塞基于质量体的往复运动耦合在质量体(10)上。 控制缸和驱动缸中的每一个由控制阀(13)或控制阀组件(23)的控制回路控制,液压分离。