Hydraulic control device
    51.
    发明公开
    Hydraulic control device 有权
    液压控制装置

    公开(公告)号:EP1106839A3

    公开(公告)日:2002-07-24

    申请号:EP00125635.3

    申请日:2000-11-23

    Abstract: A hydraulic control device, for the actuation of a hydraulic user device, with input pressure compensator, comprising a bidirectional pilot valve (1) which can be actuated in order to connect one actuation branch (A or B) of a user device to a pressurized branch (P) of a hydraulic circuit and the other actuation branch (B or A) of the user device to a discharge branch (T) of the hydraulic circuit, and a pressure compensator (2), which is arranged on the pressurized branch (P) of the hydraulic circuit that enters the pilot valve (1). The pressure compensator (2) is affected by the pressure in the pressurized branch (P) of the hydraulic circuit, and the pressure acts so as to close the pressure compensator (2). The bidirectional pilot valve (1), in connecting a user device (A or B) to the pressurized branch (P) of the hydraulic circuit, also connects the pressurized branch (P) to the pressure compensator (2), but so as to maintain or increase its aperture, and to the discharge branch (T) of the hydraulic circuit through a choke (31, 81) so as to force the pump, which feeds the hydraulic circuit, to operate at a pressure which is significantly higher than required for the actuation of the user device (A or B), thus achieving higher operating stability.

    Abstract translation: 一种用于操作液压用户装置的液压控制装置,其具有输入压力补偿器,该液压控制装置包括双向先导阀(1),该双向先导阀可以被致动以便将用户装置的一个致动支路(A或B)连接到加压 用户设备的液压回路的分支(P)和另一个驱动分支(B或A)连接到液压回路的排放分支(T);以及压力补偿器(2),其布置在加压分支 P)进入先导阀(1)的液压回路。 压力补偿器(2)受到液压回路的加压支路(P)中的压力的​​影响,并且压力作用以关闭压力补偿器(2)。 在将用户装置(A或B)连接到液压回路的加压支路(P)上时,双向先导阀(1)也将加压支路(P)连接到压力补偿器(2),但是为了 保持或增加其孔径,并且通过扼流器(31,81)连接到液压回路的排放支路(T),以迫使供给液压回路的泵在明显高于所需的压力 用于启动用户设备(A或B),从而实现更高的操作稳定性。

    HYDRAULIC DRIVE DEVICE
    53.
    发明公开
    HYDRAULIC DRIVE DEVICE 有权
    HYDRAULISCHER ANTRIEB

    公开(公告)号:EP1058010A1

    公开(公告)日:2000-12-06

    申请号:EP99961406.8

    申请日:1999-12-27

    Abstract: A hydraulic drive device including a swing control system capable of accelerating it to a stationary state without any jerky swing operation at the time of starting of the swing operation, providing high energy efficiency, forming a stable swing system, and preventing a cost and space from increasing due to provision of additional circuits or complicated problem with circuit configuration from occurring, wherein a pump control device (18) is installed so as to control a discharge flow so that a pump discharge pressure becomes higher by a specified value than the max. load pressures of actuators (2 to 6), pressure compensating valves (12 to 16) are formed so that pressure differences between the discharge pressure of a hydraulic pump (1) and the max. load pressures of the actuators (2 to 6) are set as target compensating pressure differences, respectively, a load dependent characteristic which reduces the target compensating pressure differences when a load pressure rises is provided to the pressure compensating valve (12) of a swing section, and the load dependent characteristic is set so that a flow characteristic simulating the HP constant control of a swing motor can be obtained.

    Abstract translation: 一种液压驱动装置,其包括能够在起动摆动操作时不产生任何急剧的摆动操作而将其加速到静止状态的摆动控制系统,提供高能量效率,形成稳定的摆动系统,并且防止成本和空间 由于提供附加电路而增加,或者发生电路配置的复杂问题,其中安装泵控制装置(18)以便控制排出流量,使得泵排出压力变得高于最大值的指定值。 形成致动器(2〜6),压力补偿阀(12〜16)的负荷压力,使得液压泵(1)的排出压力与最大压力之间的压力差。 致动器(2〜6)的负载压力分别被设定为目标补偿压力差,当将负载压力上升时将目标补偿压力差降低的负载相关特性提供给摆动部分的压力补偿阀(12) ,并且设定负载相关特性,使得可以获得模拟摆动马达的HP恒定控制的流量特性。

    Distributeur hydraulique
    55.
    发明公开
    Distributeur hydraulique 有权
    液压装置Wegeventil

    公开(公告)号:EP1024299A1

    公开(公告)日:2000-08-02

    申请号:EP00400166.5

    申请日:2000-01-21

    Inventor: Rivolier, Michel

    CPC classification number: F15B13/0417 Y10T137/87169 Y10T137/87185

    Abstract: Distributeur hydraulique avec une balance de régulation comprenant un plongeur (14) qui est déplaçable dans un logement (13), sous l'action d'un différentiel de pression (Δp) entre la pression d'admission (P) et la pression de charge la plus élevée (LS), et qui est propre à dégager, en proportion de ce différentiel (Δp), un orifice latéral (21) du logement (13) raccordé à un orifice de travail (A, B) du distributeur ; la paroi du logement (13) et/ou le plongeur (14) est équipée d'un passage calibré (30) reliant d'admission de fluide sous pression (P) et l'orifice latéral lorsque le plongeur est repoussé en position extrême par la pression (LS) excédant la pression d'admission (P) ; ainsi, malgré la valeur excédentaire de la pression (LS) qui devrait inhiber le fonctionnement du distributeur, du fluide hydraulique est délivré sous faible débit à l'orifice latéral et autorise le déplacement sous faible vitesse du récepteur hydraulique commandé par le distributeur hydraulique.

    Abstract translation: 分配器结合了柱塞(14)的形式的调节平衡,其在由一个面上的入口压力和另一个面上的负载压力产生的压力差的作用下在孔(13)中移动。 在邻近柱塞的第一端(12)的区域中,孔壁和/或柱塞具有至少一个经校准的通道(30),其被设计成在柱塞端和孔中的侧向孔(21)之间建立连接 当柱塞在正常入口压力以上的极限载荷下被迫进入其终端位置时。 这确保流体以较低的速率流到孔口并且提供由分配器控制的液压接收器的缓慢移动。

    Oil pump control valve
    57.
    发明公开
    Oil pump control valve 失效
    油泵的控制阀

    公开(公告)号:EP0875678A3

    公开(公告)日:2000-01-26

    申请号:EP98201366.6

    申请日:1998-04-28

    CPC classification number: F04C14/24 F15B11/05

    Abstract: An oil pump apparatus which includes an oil pump (20) for being driven by a driving source (10) and for being connected to a plurality of components (51,52,53) to which an oil is supplied from the oil pump (20) and a control valve (30) preventing the oil which is unnecessary to the components (51,52,53) from flowing into the components (51,52,53), wherein at least one of the components (51,52,53) is an actuator (51) operated by an oil pressure generated by the oil pump (20) and wherein the control valve (30) permits the oil of which the quantity is smaller than that of the oil which is consumed by the actuator (51) to flow into the components (51,52,53) when the actuator (51) is not operated and the control valve (30) permits the oil of which the quantityis larger than that of the oil which is consumed by the actuator (51) to flow into the components (51,52,53) when the actuator (51) is operated.

    Hydraulische Steuereinrichtung zur lastdruckunabhängigen Steuerung eines doppeltwirkenden Motors
    58.
    发明公开
    Hydraulische Steuereinrichtung zur lastdruckunabhängigen Steuerung eines doppeltwirkenden Motors 失效
    对于一个双作用马达的负荷压力的独立控制的液压控制装置

    公开(公告)号:EP0877169A3

    公开(公告)日:2000-01-19

    申请号:EP98102270.0

    申请日:1998-02-10

    Abstract: Es wird eine hydraulische Steuereinrichtung (10) zur lastdruckunabhängigen Steuerung eines doppeltwirkenden Motors vorgeschlagen, die sich für eine versorgungsabhängige Ölstromaufteilung eignet und bei einfacher Bauweise höhere Sicherheitsanforderungen erfüllt. Eine der Meßblende (22) nachgeschaltete Druckwaage (12) hat einen Drosselschieber (48), der von einem Rückschlagventil (42) getrennt ist. Eine LS-Druckleitung (55) ist über den Drosselschieber (48) und einen Kolbenabschnitt (30) des Steuerschiebers (25) entlastbar, wobei dieser als Vollschieber ohne innere Kanäle ausgeführt ist. Ein Sinken der Last am Motor wird bei Pumpendruckabfall oder Leckage im Steuerkreis unabhängig von den Druckverhältnissen an der Druckwaage (12) durch das Rückschlagventil (42) verhindert. Dabei läßt sich der Steuerschieber (25) mit einer zusätzlichen Freigangstellung (37) ausbilden.

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