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    HYDRAULIC VALVE WITH PRESSURE LIMITER
    4.
    发明申请
    HYDRAULIC VALVE WITH PRESSURE LIMITER 有权
    液压阀与压力限制

    公开(公告)号：US20130061955A1

    公开(公告)日：2013-03-14

    申请号：US13635644

    申请日：2010-11-22

    Applicant: Gregory Coolidge

    Inventor： Gregory Coolidge

    IPC: F16K31/12

    CPC classification number: G05D16/10 ,  F15B13/026 ,  F15B13/0417 ,  F15B2211/3054 ,  F15B2211/40569 ,  F15B2211/50554 ,  F15B2211/5153 ,  F15B2211/55 ,  F15B2211/653 ,  Y10T137/7762 ,  Y10T137/7784

    Abstract: 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 (FIGS. 2 and 5) and a closed position (FIGS. 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.

    Abstract translation: 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是整体结构，每个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，该压力补偿器阀芯60在打开位置（图2和图5）和关闭位置（图4和图6）之间可响应于阀芯上的压差而运动。 压力限制阀52包括压力限制阀芯76，当限制压力达到选定极限压力时，压力限制阀芯76移动到打开位置以改变压差并关闭压力补偿阀。

    Hydraulic pressure control device of construction machine
    5.
    发明授权
    Hydraulic pressure control device of construction machine 有权
    施工机械液压控制装置

    公开(公告)号：US07520130B2

    公开(公告)日：2009-04-21

    申请号：US10579394

    申请日：2004-11-12

    Applicant: Junsei Tanaka ,  Kazuhiro Hatake

    Inventor： Junsei Tanaka ,  Kazuhiro Hatake

    IPC: F16D31/02

    CPC classification number: F15B11/17 ,  F15B2211/20546 ,  F15B2211/20576 ,  F15B2211/3054 ,  F15B2211/40515 ,  F15B2211/41518 ,  F15B2211/426 ,  F15B2211/6054 ,  F15B2211/6309 ,  F15B2211/6336 ,  F15B2211/65 ,  F15B2211/6652 ,  F15B2211/7142

    Abstract: A hydraulic pressure control device of a construction machine enabling an increase in operability and working efficiency by suppressing a fluctuation in flow rates occurring before and after the switching of a merging-separating valve, in energy efficiency by accurately determining the switching timing of the merging-separating valve to suppress the pressure energy loss of a pressure compensating valve, and working efficiency in the compound motion of plural hydraulic actuators. When a controller determines that necessary flow rates of first and second hydraulic actuators are less than maximum discharge flow rate of each of first and second variable displacement hydraulic pumps when the first merging-separating valve is in a merging position, the switching of the first merging-separating valve is controlled so that firstly the first merging-separating valve is switched to a separating position and, after the switching is completed, the second merging-separating valve is switched.

    Abstract translation: 一种施工机械的液压控制装置，其能够通过抑制合流分离阀的切换前后发生的流量的波动，通过精确地确定合流分离阀的切换时机，从而能够提高可操作性和工作效率， 分离阀以抑制压力补偿阀的压力能量损失，以及多个液压致动器的复合运动中的工作效率。 当第一合并分离阀处于合并位置时，当控制器确定第一和第二液压致动器的必要流量小于第一和第二可变排量液压泵中的每一个的最大排出流量时，首先合并 控制分离阀，使得首先将第一合并分离阀切换到分离位置，并且在切换完成之后，切换第二合并分离阀。

    Hydraulic pressure control device of construction machine
    6.
    发明申请
    Hydraulic pressure control device of construction machine 有权
    施工机械液压控制装置

    公开(公告)号：US20070125078A1

    公开(公告)日：2007-06-07

    申请号：US10579394

    申请日：2004-11-12

    Applicant: Junsei Tanaka ,  Kazuhiro Hatake

    Inventor： Junsei Tanaka ,  Kazuhiro Hatake

    IPC: F16D31/02

    CPC classification number: F15B11/17 ,  F15B2211/20546 ,  F15B2211/20576 ,  F15B2211/3054 ,  F15B2211/40515 ,  F15B2211/41518 ,  F15B2211/426 ,  F15B2211/6054 ,  F15B2211/6309 ,  F15B2211/6336 ,  F15B2211/65 ,  F15B2211/6652 ,  F15B2211/7142

    Abstract: A hydraulic pressure control device of a construction machine enabling an increase in operability and working efficiency by suppressing a fluctuation in flow rates occurring before and after the switching of a merging-separating valve, in energy efficiency by accurately determining the switching timing of the merging-separating valve to suppress the pressure energy loss of a pressure compensating valve, and working efficiency in the compound motion of plural hydraulic actuators. When a controller determines that necessary flow rates of first and second hydraulic actuators are less than maximum discharge flow rate of each of first and second variable displacement hydraulic pumps when the first merging-separating valve is in a merging position, the switching of the first merging-separating valve is controlled so that firstly the first merging-separating valve is switched to a separating position and, after the switching is completed, the second merging-separating valve is switched.

    Abstract translation: 一种施工机械的液压控制装置，其能够通过抑制合流分离阀的切换前后发生的流量的波动，通过精确地确定合流分离阀的切换时机，从而能够提高可操作性和工作效率， 分离阀以抑制压力补偿阀的压力能量损失，以及多个液压致动器的复合运动中的工作效率。 当第一合并分离阀处于合并位置时，当控制器确定第一和第二液压致动器的必要流量小于第一和第二可变排量液压泵中的每一个的最大排出流量时，首先合并 控制分离阀，使得首先将第一合并分离阀切换到分离位置，并且在切换完成之后，切换第二合并分离阀。

    Hydraulic circuit apparatus for operating work-implement actuating cylinders
    8.
    发明授权
    Hydraulic circuit apparatus for operating work-implement actuating cylinders 失效
    用于工作执行执行缸的液压回路装置

    公开(公告)号：US5218897A

    公开(公告)日：1993-06-15

    申请号：US655351

    申请日：1991-02-22

    Applicant: Kiyoshi Shirai ,  Terruo Akiyama ,  Shigeru Shinohara ,  Naoki Ishizaki ,  Takahide Takiguchi

    Inventor： Kiyoshi Shirai ,  Terruo Akiyama ,  Shigeru Shinohara ,  Naoki Ishizaki ,  Takahide Takiguchi

    IPC: E02F9/22 ,  F15B11/024 ,  F15B13/02

    CPC classification number: F15B11/024 ,  E02F9/2221 ,  F15B13/021 ,  F15B2011/0243 ,  F15B2211/20546 ,  F15B2211/30505 ,  F15B2211/3054 ,  F15B2211/30555 ,  F15B2211/3058 ,  F15B2211/3111 ,  F15B2211/3133 ,  F15B2211/31529 ,  F15B2211/31576 ,  F15B2211/329 ,  F15B2211/6054 ,  F15B2211/75 ,  Y10T137/87185

    Abstract: This invention provides a hydraulic circuit apparatus for operating a work-implement actuating cylinder arranged such that, during an earth compacting operation using a bucket, a work implement or boom is lowered by its own weight, and during other operations, a part of the fluid under pressure in a lifting chamber of the actuating cylinder is supplied together with pressurized fluid discharged by a pump into a lowering chamber to increase the retracting speed of a piston rod in the work-implement actuating cylinder. The apparatus comprises a spool slidably inserted in a valve bore formed in an operating valve body so that it may be moved between a first actuating position, where a second port connected to the lowering chamber is communicated with a second tank port and a first port connected to the lifting chamber is communicated with a first pump port; and a second actuating position, where the second port is communicated with a second pump port and the first port is communicated with a first tank port. A regenerative fluid passage, including a check valve, is formed in the valve body so as to allow the first and second ports to communicate together.

    Abstract translation: PCT No.PCT / JP90 / 00829 Sec。 371日期1991年2月22日 102（e）日期1991年2月22日PCT Filed 1990年6月26日PCT公布。 出版物WO91 / 00431 日本1991年1月10日。本发明提供了一种液压回路装置，用于操作工作台致动筒，其布置成使得在使用铲斗的地球压实操作期间，工件或吊杆由其自重降低，并且在其他 操作中，在致动缸的提升室中的压力下的一部分流体与由泵排出的加压流体一起供应到下降室中，以增加工作机构致动缸中的活塞杆的回缩速度。 该装置包括可滑动地插入形成在操作阀体中的阀孔中的阀芯，使得其可在第一致动位置和连接到下降室的第二端口与第二罐口连通的第一致动位置和连接的第一端口之间移动 所述升降室与第一泵口连通; 以及第二致动位置，其中所述第二端口与第二泵口连通，并且所述第一端口与第一罐口连通。 包括止回阀的再生流体通道形成在阀体中，以允许第一和第二端口连通在一起。

    Hydraulic control means, especially a steering means
    9.
    发明授权
    Hydraulic control means, especially a steering means 失效
    液压控制装置，特别是转向装置

    公开(公告)号：US4006663A

    公开(公告)日：1977-02-08

    申请号：US564278

    申请日：1975-04-02

    Applicant: Johannes Vagn Baatrup ,  Thorkild Christensen

    Inventor： Johannes Vagn Baatrup ,  Thorkild Christensen

    IPC: B62D5/08 ,  B62D5/09 ,  F15B11/02 ,  F15B13/042

    CPC classification number: F15B11/02 ,  B62D5/08 ,  B62D5/09 ,  F15B2211/20538 ,  F15B2211/30505 ,  F15B2211/3051 ,  F15B2211/30525 ,  F15B2211/3054 ,  F15B2211/327 ,  F15B2211/329 ,  F15B2211/50518 ,  F15B2211/5151 ,  F15B2211/55 ,  F15B2211/6054 ,  F15B2211/61 ,  F15B2211/613 ,  F15B2211/6355 ,  F15B2211/7054

    Abstract: The invention relates to a hydraulic control apparatus of the type used in vehicle steering systems. In all such systems there is a reversible type hydraulic motor connected to the steering linkage. The motor has complementary expansible chambers. With the use of control means pressurized fluid is selectively delivered to one chamber which is caused to expand concomitantly with the collapsing of the other chamber from which fluid is returned to a sump. Forces transmitted to the hydraulic motor through the steering linkage by reason of the wheels striking objects such as stones or curbs cause an objectionable effect by reason of fluid being forced out of the motor back into the system. This effect is avoided by providing two valve assemblies for the two ports of the reversible motor which function in the absence of a steering command as ordinary one way check valves which prevent the undesired flow of fluid from either of the motor ports. Each of the valve assemblies has pressure responsive means and is openable when the pressure responsive means is acted upon by pressure. The pressure responsive means of each valve assembly is fluidly connected to the upstream side of the other valve assembly so that both valve assemblies will be open during the normal power steering operation wherein pressurized fluid is admitted to one side of the actuating motor and withdrawn from the other side thereof.

    Abstract translation: 本发明涉及一种用于车辆转向系统的液压控制装置。 在所有这样的系统中，存在连接到转向连杆的可逆式液压马达。 电动机具有互补的可膨胀室。 通过使用控制装置，加压流体被选择性地输送到一个室，该腔室被引起与另一个腔室的塌缩同时膨胀，从该腔室将流体返回到贮槽。 由于车轮撞击物体如石块或路缘石，通过转向连杆传递给液压马达的力，由于流体被迫从电机返回到系统中，造成令人不快的影响。 通过为可逆电动机的两个端口提供两个阀组件来避免这种效果，该两个阀组件在没有转向指令的情况下起作为普通单向止回阀的作用，其防止来自任何一个电动机端口的不期望的流体流动。 每个阀组件都具有压力响应装置，并且当压力响应装置通过压力作用时可以打开。 每个阀组件的压力响应装置流体地连接到另一个阀组件的上游侧，使得在正常动力转向操作期间两个阀组件都将打开，其中加压流体被允许到致动马达的一侧并从 的另一面。

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