HYDRAULIC VALVE WITH PRESSURE LIMITER
    2.
    发明公开
    HYDRAULIC VALVE WITH PRESSURE LIMITER 审中-公开
    带限压器的液压阀

    公开(公告)号:EP3150862A1

    公开(公告)日:2017-04-05

    申请号:EP16200508.6

    申请日:2010-11-22

    发明人: COOLIDGE, Gregory

    IPC分类号: F15B13/04 G05D16/10 F15B13/02

    摘要: An assembly of valve sections 10 includes an inlet section 12, an outlet section 14, a working section 16, and a working section 18. The working section 16 is a conventional pressure compensated working section. The working section 18 includes a directional control valve 21, a pressure compensator valve 50, and a pressure limiter valve 52. The valves 50 and 52 can be of integral construction, such that each is an essential part to complete the other. The pressure compensator valve 50 includes a pressure compensator spool 60 movable between an opened position (Figures 2 and 5) and a closed position (Figures and 6) in response to a pressure differential across the spool. The pressure limiter valve 52 includes a pressure limiter spool 76 that moves to an open position to change the pressure differential and close the pressure compensator valve when a selected limit pressure is reached.

    摘要翻译: 阀部分10的组件包括入口部分12,出口部分14,工作部分16和工作部分18.工作部分16是传统的压力补偿工作部分。 工作部分18包括方向控制阀21,压力补偿阀50和压力限制阀52.阀50和52可以是整体结构,使得每个阀都是完成另一个的基本部分。 压力补偿阀50包括压力补偿器阀芯60,其可响应于阀芯上的压力差而在打开位置(图2和5)和关闭位置(图6和6)之间移动。 压力限制器阀52包括压力限制器阀芯76,该压力限制器阀芯76移动到打开位置以改变压力差并且在达到选定极限压力时关闭压力补偿器阀。

    HYDRAULIC VALVE WITH PRESSURE LIMITER
    3.
    发明公开
    HYDRAULIC VALVE WITH PRESSURE LIMITER 有权
    HYDRAULIKVENTIL MIT DRUCKBEGRENZER

    公开(公告)号:EP2547914A1

    公开(公告)日:2013-01-23

    申请号:EP10782513.5

    申请日:2010-11-22

    发明人: COOLIDGE, Gregory

    IPC分类号: F15B13/04 G05D16/10 F15B13/02

    摘要: An assembly of valve sections 10 includes an inlet section 12, an outlet section 14, a working section 16, and a working section 18. The working section 16 is a conventional pressure compensated working section. The working section 18 includes a directional control valve 21, a pressure compensator valve 50, and a pressure limiter valve 52. The valves 50 and 52 are of integral construction, such that each is an essential part to complete the other. The pressure compensator valve 50 includes a pressure compensator spool 60 movable between an opened position (Figures 2 and 5) and a closed position (Figures 4 and 6) in response to a pressure differential across the spool. The pressure limiter valve 52 includes a pressure limiter spool 76 that moves to an open position to change the pressure differential and close the pressure compensator valve when a selected limit pressure is reached.

    摘要翻译: 阀部件的组件包括入口部分,出口部分,工作部分和工作部分。 工作部分是传统的压力补偿工作部分。 工作部分包括方向控制阀,压力补偿阀和限压阀。 这些阀门是一体的结构,每个阀门是完成另一个阀门的重要部件。 压力补偿阀包括压力补偿器阀芯,其响应于阀芯上的压力差在打开位置和关闭位置之间运动。 压力限制阀包括压力限制阀芯,当限制压力达到选定的压力时,压力限制器阀芯移动到打开位置以改变压差并关闭压力补偿阀。

    Hydraulische Steuervorrichtung und Druckweiche dafür
    4.
    发明公开
    Hydraulische Steuervorrichtung und Druckweiche dafür 有权
    液压控制装置和压力开关

    公开(公告)号:EP2241763A3

    公开(公告)日:2012-10-24

    申请号:EP09007207.5

    申请日:2009-05-29

    申请人: HAWE Hydraulik SE

    IPC分类号: F15B11/05 F15B13/02

    摘要: In einer hydraulischen Steuervorrichtung (H) mit einer abschaltbaren Druckquelle (P), einem Reservoir (R) und einer in einem Abströmweg (13) von der Ventilanordnung (V) zum Reservoir (R) angeordneten Druckweiche (W), die entweder die Ventilanordnung (V) mit dem Reservoir (R) verbindet oder gegenüber dem Reservoir (R) absperrt, und ein verstellbares Steuerglied (16) enthält, das in einer ersten Verstellrichtung durch eine Feder (17) und einen aus dem von der Ventilanordnung (V) anstehenden Druck (P1) abgeleiteten Steuerdruck und in einer zweiten Stellrichtung zu einer den Abströmweg (13) absperrenden Steuerstellung durch einen aus dem Versorgungsdruck abgeleiteten Steuerdruck beaufschlagbar ist, ist die Druckweiche (W) ein 2/2-Wegesitzventil (16) mit leckagefreier Absperrstellung und mit einem das Steuerglied (16) bildenden Ventilkegel (24) und einem im Abströmweg (13) angeordneten Ventilsitz (25), sind die Druckquelle (P) und die Ventilanordnung (V) permanent über vom Hauptkanal (10, 11, 12) eine Drossel (D) enthaltenden Hauptkanal (10, 11, 12) verbunden, zweigt der Abströmweg (13) zwischen der Ventilanordnung (V) und der Drossel (D) ab, und wird der den Ventilkegel (24) in der zweiten Stellrichtung zum Ventilsitz (25) beaufschlagende Steuerdruck zwischen der Druckquelle (P) und der Drossel (D) aus dem Versorgungsdruck abgeleitet.

    VENTILBAUKOMPONENTEN
    6.
    发明公开

    公开(公告)号:EP3042087A2

    公开(公告)日:2016-07-13

    申请号:EP14765869.4

    申请日:2014-09-02

    IPC分类号: F15B13/02

    摘要: The invention relates to a first valve component (10), in particular a pressure compensator-type component, comprising a valve slide (16) that can be guided in a valve housing (12) in a longitudinal direction, said valve slide having a control part (34) for controlling a fluid-conducting connection (28) between at least two fluid connection points (30, 32) accommodated in the valve housing (12). Said control part has at least one pocket-like recess (38), at least part of which is bordered by a fluid-guiding surface (40) running at least between two vertices of the recess and running with increasing inclination from one vertex to another vertex. The first valve component is characterised in that, starting from a predeterminable distance before the other vertex, the fluid-guiding surface (40) runs from its point of greatest inclination with decreasing inclination in the direction of said other vertex. The invention also relates to two further valve components.

    摘要翻译: 本发明涉及一种第一阀部件(10),尤其是压力补偿型部件,其包括能够在阀壳体(12)中沿纵向方向引导的阀芯(16),所述阀芯具有控制器 (34),用于控制容纳在阀壳体(12)中的至少两个流体连接点(30,32)之间的流体传导连接(28)。 所述控制部件具有至少一个袋状凹槽(38),其至少一部分由流体引导表面(40)界定,所述流体引导表面(40)至少在凹槽的两个顶点之间延伸并且从一个顶点到另一个顶点 顶点。 第一阀部件的特征在于,从另一个顶点之前的可预先确定的距离开始,流体引导表面(40)从其最大倾斜点开始沿着所述另一个顶点的方向倾斜减小。 本发明还涉及另外两个阀部件。

    HYDRAULIC DRIVING DEVICE FOR CONSTRUCTION MACHINE
    7.
    发明公开
    HYDRAULIC DRIVING DEVICE FOR CONSTRUCTION MACHINE 审中-公开
    建筑机械用液压传动装置

    公开(公告)号:EP2949948A1

    公开(公告)日:2015-12-02

    申请号:EP13872312.7

    申请日:2013-11-15

    摘要: An object of the invention is to achieve a travel speed known in the art during travelling operation, improve energy efficiency by reducing energy loss, and obtain favorable travel operability less susceptible to effects from variations in a travel load and changes in a pump delivery pressure when travelling operation is performed through operation of a travel lever over a half stroke range or less. A variable restrictor valve 80 is disposed in parallel with a flow sensing valve 50 of an engine speed sensing valve unit 13. A travel pilot pressure is adapted to act in an opening direction of the variable restrictor valve 80. The variable restrictor valve 80 is set to have a continuously increasing opening area from a full closure to a maximum with an increasing travel pilot pressure. Travel flow control valves 6d and 6e have an opening area that allows a predetermined flow rate QT required for traveling to be obtained even when a target LS differential pressure is decreased to a second specified value Pa3 when the travel lever is fully operated. In a first half of a spool stroke, the travel flow control valves 6d and 6e have an opening area approximate to an opening area of comparative example 1.

    摘要翻译: 本发明的一个目的是在行驶操作期间实现现有技术中已知的行驶速度,通过减少能量损失来提高能量效率,并且获得良好的行驶可操作性,所述行驶可操作性不易受行程负载变化和泵输送压力变化的影响 通过在半行程范围内或更小的行程操作杆进行行驶操作。 可变节流阀80设置成与发动机转速感测阀单元13的流量感测阀50平行。行程先导压力适于作用在可变节流阀80的打开方向上。可变节流阀80被设定 随着行程先导压力的增加,从全封闭到最大的开口面积不断增加。 行驶流量控制阀6d和6e具有开口面积,即使当行驶杆完全操作时目标LS压差减小到第二规定值Pa3时,也允许获得行驶所需的预定流量QT。 在滑阀行程的前半部分中,行程流量控制阀6d和6e具有与比较例1的开口面积接近的开口面积。

    Vanne d'équilibrage de l'alimentation en fluides des corps de vérin d'une servocommande man uvrant les pales d'un rotor de giravion
    8.
    发明公开
    Vanne d'équilibrage de l'alimentation en fluides des corps de vérin d'une servocommande man uvrant les pales d'un rotor de giravion 有权
    补偿液体供给的卷轴到伺服控制器,用于控制旋翼飞行器的转子的叶片的筒体

    公开(公告)号:EP2930375A1

    公开(公告)日:2015-10-14

    申请号:EP15161570.5

    申请日:2015-03-30

    IPC分类号: F15B11/22 F15B18/00

    摘要: L'invention a pour objet une vanne (V1, V2) d'équilibrage entre des pressions de fluides (F1, F2) admis dans la vanne (V1, V2) par des deuxièmes conduits (17, 17') respectifs. La vanne (V1, V2) comprend une chambre (14) de guidage en translation d'un piston (15) et des chemins fluidiques comprenant chacun un dit deuxième conduit (17, 17') et un premier conduit (16, 16') d'admission d'un fluide (F1, F2) provenant d'une même source de fluide (S1, S2) que le fluide (F1, F2) circulant dans le deuxième conduit (17, 17'). Les premiers conduits (16, 16') sont munis chacun d'un obturateur (20, 20') coopérant avec une rampe (21, 21') ménagé sur le piston (15). Un déplacement en translation du piston (15) en cas de différence de pression entre les fluides (F1, F2) respectivement admis dans les deuxièmes conduits (17, 17') provoque un glissement d'un obturateur (20, 20') le long de la rampe (21, 21') et par suite fournit un apport de fluide (F1, F2) depuis un premier conduit (16, 16') vers le deuxième conduit (17, 17') d'un même chemin fluidique.

    摘要翻译: 一种压力平衡阀用于平衡允许进入经由respectivement第二管道压力平衡阀流体的压力。 压力平衡阀具有两个用于在活塞的平移导向运动的腔室,因而流体流动路径,每一个都包括所述第二导管和用于接纳从所述相同的流体源来作为流体中流动的流体的第一管道其 第二管道。 第一管中的每一个设置有与布置在活塞上的斜坡快门操作共。 在翻译活塞分别作为允许进入第二管道的流体之间的压力差的结果的移动使所述光阀沿着相应的斜坡滑动中的一个,并因此允许附加的流体从第一管道被递送到的所述第二管道 相同的流体流动路径。

    FLOW CONTROL DEVICE AND FLOW CONTROL METHOD FOR CONSTRUCTION MACHINE

    公开(公告)号:EP2947211B1

    公开(公告)日:2018-09-26

    申请号:EP13871736.8

    申请日:2013-01-18

    摘要: Disclosed are a flow control device and a flow control method for a construction machine for preventing the loss of fluid exhausted from a hydraulic pump when a boom and an arm of an excavator are operated in combination. The flow control device for a construction machine according to the present invention includes: an engine; a variable capacity hydraulic pump connected to the engine; a first hydraulic cylinder and a second hydraulic cylinder connected to the hydraulic pump; a first control valve disposed in a center bypass channel of the hydraulic pump, the first control valve, in neutral, returning the fluid exhausted from the hydraulic pump to a hydraulic tank and, when switched, controlling the driving, stopping, and direction change of the first hydraulic cylinder; a second control valve disposed downstream of the center bypass channel of the hydraulic pump, the second control valve, in neutral, returning the fluid exhausted from the hydraulic pump to the hydraulic tank and, when switched, controlling the driving, stopping, and direction change of the second hydraulic cylinder; a regeneration fluid channel for supplementing and reusing fluid returned to the hydraulic tank during a compression stroke of the first hydraulic cylinder, and a regeneration valve disposed in the regeneration fluid channel; and a pressure-compensated flow control valve which is disposed in a meter-in fluid channel of a spool of the first control valve and limits the quantity of working fluid supplied from the hydraulic pump to the first hydraulic cylinder when the first hydraulic cylinder and the second hydraulic cylinder are operated in combination.