公开(公告)号：US20170023026A1

公开(公告)日：2017-01-26

申请号：US15302551

申请日：2015-04-30

申请人： Parker-Hannifin Corporation

发明人： Gregory Coolidge

IPC分类号： F15B13/04

CPC分类号： F15B13/0403 ,  F15B13/0402 ,  F15B13/0417 ,  F15B13/0418 ,  F15B13/0839 ,  F16K27/003 ,  F16K27/041

摘要： A working valve section for a sectional fluid control valve comprising a valve section housing having a substantially planar surface for being attached to an adjacent valve section housing; a main control spool bore (43) extending into the housing substantially parallel to the planar surface; a compensator spool bore (46) extending into the housing substantially parallel to the planar surface, the compensator spool bore being spaced from the main control spool bore; a first relief slot (49a) extending across the planar surface substantially coextensive with the main control spool bore; and a second relief slot (49b) extending across the planar surface substantially coextensive with the compensator spool bore.

摘要翻译： 一种用于截面流体控制阀的工作阀部分，包括具有基本平坦的表面的阀部分壳体，用于附接到相邻的阀部分壳体; 主控制阀芯孔（43），其基本上平行于所述平面延伸到所述壳体中; 补偿阀芯孔（46），其基本上平行于所述平坦表面延伸到所述壳体中，所述补偿阀芯孔与所述主控制阀芯孔间隔开; 延伸穿过平面的第一释放槽（49a），其基本上与主控制阀芯孔共同延伸; 以及延伸穿过所述平坦表面的第二释放槽（49b），所述第二释放槽基本上与所述补偿器阀芯孔共同延伸。

公开(公告)号：US06327959B1

公开(公告)日：2001-12-11

申请号：US09600318

申请日：2000-07-13

申请人： Kinya Takahashi ,  Yoshizumi Nishimura ,  Yusaku Nozawa ,  Nobuhiko Ichiki ,  Mitsuhisa Tougasaki

发明人： Kinya Takahashi ,  Yoshizumi Nishimura ,  Yusaku Nozawa ,  Nobuhiko Ichiki ,  Mitsuhisa Tougasaki

IPC分类号： F15B1108

CPC分类号： E02F9/2267 ,  E02F9/2271 ,  F15B13/021 ,  F15B13/0418 ,  F15B2013/006 ,  Y10T137/86702

摘要： A recovery check valve 26 and a piston valve 27 are axially slidably disposed within a spool 2 in coaxial relation. An axial fluid passage 32 is formed within a cylindrical portion 27a of the piston valve 27, and a seat portion 33 for the recovery check valve is formed at an open end of the cylindrical portion 27a. The cylindrical portion 37a of the piston valve is formed with a hole 36 through which a hydraulic fluid in the fluid chamber 32 is introduced to a bridge passage 21 when the spool 2 is operated so as to introduce a hydraulic fluid from a hydraulic pump to the bottom side of a hydraulic cylinder. Fluid passages 40, 31 are formed within the spool so that a hydraulic fluid in the bridge passage 21 is introduced to the closed end of the piston valve through the fluid passages when the spool is operated in the opposite direction. With such a structure, the size of the valve apparatus can be set to the same size as the directional control valve not provided with the recovery check valve.

摘要翻译： 回收止回阀26和活塞阀27以同轴的关系轴向可滑动地设置在阀芯2内。 轴向流体通道32形成在活塞阀27的圆筒形部分27a内，并且用于回收止回阀的座部33形成在圆柱形部分27a的开口端。 活塞阀的圆筒部37a形成有孔36，当阀芯2被操作时，流体室32中的液压流体通过该孔36被引导到桥接通道21，以将来自液压泵的液压流体引入到 液压缸底部。 流体通道40,31形成在阀芯内，使得当阀芯沿相反方向操作时，桥式通道21中的液压流体通过流体通道被引入活塞阀的封闭端。 通过这样的结构，可以将阀装置的尺寸设定为与未设置回收止回阀的方向控制阀相同的尺寸。

公开(公告)号：US5446979A

公开(公告)日：1995-09-05

申请号：US142366

申请日：1993-11-22

申请人： Genroku Sugiyama ,  Toichi Hirata

发明人： Genroku Sugiyama ,  Toichi Hirata

IPC分类号： E02F9/22 ,  F15B11/16 ,  F15B11/17 ,  F15B13/04 ,  G05D1/02

CPC分类号： F15B13/0403 ,  E02F9/2232 ,  E02F9/2239 ,  E02F9/2282 ,  E02F9/2292 ,  E02F9/2296 ,  F15B11/161 ,  F15B11/17 ,  F15B13/0418 ,  F15B2211/20553 ,  F15B2211/20576 ,  F15B2211/30555 ,  F15B2211/3116 ,  F15B2211/3127 ,  F15B2211/329 ,  F15B2211/351 ,  F15B2211/365 ,  F15B2211/40515 ,  F15B2211/428 ,  F15B2211/45 ,  F15B2211/6054 ,  F15B2211/6057 ,  F15B2211/6355 ,  F15B2211/7058 ,  F15B2211/7142 ,  F15B2211/78

摘要： The hydraulic circuit system for civil engineering and construction machines includes a first pressure adjusting device (130) arranged between first variable restrictors (107, 107a) of a left traveling directional control valve (47) and a first traveling motor (57) for controlling the pressure downstream of the first variable restrictors to a value corresponding to a first signal pressure and a second pressure adjusting device (133) arranged between second variable restrictors (108, 108a) of a right traveling directional control valve (49) and a second traveling motor (58) for controlling the pressure downstream of the second variable restrictors to a value corresponding to a second signal pressure. A shuttle valve (136) detects a higher one of load pressures of the first and second traveling motors as a maximum load pressure. When performing the combined operation in which the first and second traveling motors are driven with at least one of a plurality of working actuators (53-56) simultaneously, signal selection valves (131, 135, 170) are actuated so as to supply the maximum load pressure to the first and second pressure adjusting devices as the first and second signal pressures. Consequently, in a combined operation of traveling and performing other works, a communication circuit (110) is activated along with the operation of a working actuator whereby even if a hydraulic fluid supply circuit (104) of the second traveling directional control valve communicates with a hydraulic fluid supply circuit (103) of a first traveling directional control valve, the differential pressures across the first and second variable restrictors become almost the same, thereby achieving a stable straight traveling.

公开(公告)号：US4738279A

公开(公告)日：1988-04-19

申请号：US937706

申请日：1986-12-04

申请人： Walter Kropp

发明人： Walter Kropp

IPC分类号： F15B11/00 ,  F15B13/04 ,  F16K11/07 ,  F15B13/02

CPC分类号： F15B13/0403 ,  F15B13/0418 ,  Y10T137/86702 ,  Y10T137/87169

摘要： A multiway valve is provided having a load feedback wherein a pressure-reducing element that reduces the pressure conveyed to a connection through the valve with a control pressure signal line is controlled as a function of the displacement of a valve piston in the multiway valve.

摘要翻译： 提供具有负载反馈的多通阀，其中通过控制压力信号线减小输送到通过阀的连接的压力的减压元件作为多孔阀中的阀活塞的位移的函数来控制。

公开(公告)号：US4719753A

公开(公告)日：1988-01-19

申请号：US832122

申请日：1986-02-20

申请人： Walter Kropp

发明人： Walter Kropp

IPC分类号： F15B13/04 ,  F16D31/02

CPC分类号： F15B13/0403 ,  F15B13/0418

摘要： A hydraulic or the like drive system which can include a variable-speed pump with at least one control element. The control element can be connected to a pump control piston arranged in a pump control cylinder, the position of which is determined by a control pressure. The drive system can further include a conveying conduit connected to the pump and a return conduit which leads to the respective reservoir, and can furthermore include control elements, with the conduit emanating from the pump are connected--by intervention of a respective branch line--several demand points which respectively can be connected to the conveying conduit by means of an in the respective branch line arranged, randomly movable valve. The valve has two auxiliary pistons arranged in the main piston of the valve and each auxiliary piston houses a reversing piston.

摘要翻译： 液压等驱动系统，其可包括具有至少一个控制元件的变速泵。 控制元件可以连接到布置在泵控制缸中的泵控制活塞，其位置由控制压力决定。 驱动系统还可以包括连接到泵的输送管道和通向相应储存器的回流管道，并且还可以包括控制元件，其中从泵发出的管道通过相应的分支管线 要求点分别可以通过在相应的分支管线中连接到输送管道，布置成可随机移动的阀。 该阀具有布置在阀的主活塞中的两个辅助活塞，并且每个辅助活塞容纳反向活塞。

公开(公告)号：US20240102495A1

公开(公告)日：2024-03-28

申请号：US17768639

申请日：2020-11-11

申请人： Parker-Hannifin Corporation

发明人： Gregory Thomas Coolidge

IPC分类号： F15B13/04

CPC分类号： F15B13/0418 ,  F15B2211/30535

摘要： An example pressure compensator valve includes: a compensator spool; a first piston coupled to a distal end of, and ax-ially-movable with, the compensator spool; a second piston disposed at a proximal end of the compensator spool, wherein the compensator spool is axially movable relative to the second piston; and a compensator spring applying a biasing force on the compensator spool.

公开(公告)号：US20150362087A1

公开(公告)日：2015-12-17

申请号：US14765139

申请日：2014-01-31

申请人： PARKER-HANNIFIN CORPORATION

发明人： Gregory T. Coolidge

IPC分类号： F16K17/18 ,  F16K31/12 ,  F16K3/02

CPC分类号： F16K17/18 ,  F15B11/042 ,  F15B13/0418 ,  F16K3/029 ,  F16K31/12 ,  Y10T137/7838

摘要： A hydraulic valve assembly includes an inlet; an outlet; a pressure compensator upstream of the inlet; and a pressure limited flow priority boost valve spool movable between a first position and a second position and comprising an outer spool body and an inner spool body. The outer spool body includes deadhead meter notches disposed such that, in the first position, the spool closes fluid communication between the inlet and the pressure compensator, and such that, in the second position, the spool opens fluid communication between the inlet and the pressure compensator. The inner spool body is movable relative to the outer spool body and is configured to open fluid communication between the inlet and the outlet so as to bypass the compensator. The flow between the inlet and the compensator is a reduced pilot flow.

摘要翻译： 液压阀组件包括入口; 一个出口 入口上游的压力补偿器; 以及可在第一位置和第二位置之间移动的压力限制流量优先增压阀阀芯，并且包括外卷轴体和内卷轴体。 外卷轴主体包括死角计量器凹口，其设置成使得在第一位置，阀芯封闭入口和压力补偿器之间的流体连通，并且使得在第二位置，阀芯打开入口和压力之间的流体连通 补偿器 内卷轴主体可相对于外卷轴主体移动，并且构造成打开入口和出口之间的流体连通，以绕过补偿器。 入口和补偿器之间的流量是减少的先导流量。

公开(公告)号：US09103355B2

公开(公告)日：2015-08-11

申请号：US13885093

申请日：2010-11-25

申请人： Bon-Seuk Ku ,  Hea-Gyoon Joung ,  Man-Seuk Jeon

发明人： Bon-Seuk Ku ,  Hea-Gyoon Joung ,  Man-Seuk Jeon

IPC分类号： F16K11/07 ,  F15B13/02 ,  E02F9/22 ,  F15B13/04 ,  F15B13/06

CPC分类号： F15B13/026 ,  E02F9/2267 ,  F15B13/0418 ,  F15B13/06 ,  F16K11/0716 ,  Y10T137/8671

摘要： A flow control valve for a construction machine is provided, which can constantly control a flow rate of hydraulic fluid supplied to a hydraulic actuator through a flow control spool in a spool. The flow control valve for a construction machine, having a valve body in which a supply passage communicating with a pump passage and actuator ports connected to a hydraulic actuator are formed, and a spool installed in the valve body to be shifted, includes a flow control spool shifted in the spool to variably control a cross-sectional area of a passage connected to the one actuator port if a flow rate of the hydraulic fluid that flows through the supply passage is higher than a set flow rate, a first passage formed on the spool to communicate with the supply passage and a second passage formed on the spool to communication with the one actuator port and having a cross-sectional area that is varied depending on the shifting of the flow control spool.

摘要翻译： 提供了一种用于建筑机械的流量控制阀，其可以通过阀芯中的流量控制阀轴来恒定地控制供给液压致动器的液压流体的流量。 一种用于建筑机械的流量控制阀，其具有阀体，其中形成有与泵通道连通的供给通道和连接到液压致动器的致动器端口的阀体，以及安装在要移动的阀体中的阀芯，包括流量控制 如果流经供应通道的液压流体的流量高于设定的流量，则阀芯在阀芯中移动以可变地控制连接到一个致动器端口的通道的横截面积，第一通道形成在 卷轴与供给通道连通，第二通道形成在卷轴上以与一个致动器端口连通并且具有根据流量控制卷轴的移位而变化的横截面积。

公开(公告)号：US6148856A

公开(公告)日：2000-11-21

申请号：US266224

申请日：1999-03-10

申请人： Walter Kropp

发明人： Walter Kropp

IPC分类号： B66F9/22 ,  E02F9/12 ,  E02F9/22 ,  F15B11/05 ,  F15B13/04 ,  F15B11/04

CPC分类号： E02F9/2296 ,  B66F9/22 ,  E02F9/128 ,  E02F9/2203 ,  F15B11/05 ,  F15B13/0418 ,  F15B2211/353

摘要： The invention relates to a control valve for the control, independently of a load, of a hydraulic consumer with a distributing slide valve to control the direction of movement and the speed of movement of the consumer and a throttle valve associated with the distributing slide valve. The throttle valve, when there is a connection of a pump with the consumer, can be pressurized toward an open position by the pressure downstream of the throttle point of the distributing slide valve, and toward a closed position by the load pressure of the consumer and by a spring. The invention teaches that the object of providing a control valve that easily makes possible a restriction of the quantity of hydraulic fluid flowing out of the consumer to a reservoir and thus a control of the speed of movement of the consumer in the discharge direction independently of the load, can be accomplished if, when the consumer is connected with a reservoir, the quantity of hydraulic fluid flowing out of the consumer is restricted by the throttle valve. In one embodiment, when the consumer is connected with the reservoir, the throttle valve can be pressurized toward the closed position by the pressure upstream of the throttle point of the distributing slide valve, whereby the pressure acting in the direction of the closed position of the throttle valve can be set and varied by a valve device that generates a differential pressure.

摘要翻译： 本发明涉及一种控制阀，用于独立于具有分配滑阀的液压消耗器的负载的控制，以控制消费者的运动方向和运动速度以及与分配滑阀相关联的节流阀。 当泵与消费者连接时，节流阀可以通过分配滑阀的节流点下游的压力朝向打开位置加压，并且通过消费者的负载压力朝向关闭位置， 在春天 本发明教导了提供一种控制阀的目的，其容易地限制从消费者流出到储存器的液压流体的量，从而可以独立于排放方向控制消费者在排出方向上的移动速度 如果消费者与储存器连接时，可以通过节流阀限制流出消费者的液压流体的数量。 在一个实施例中，当消费者与储存器连接时，节流阀可以通过分配滑阀的节流点上游的压力朝向关闭位置加压，由此沿着关闭位置的方向作用的压力 节流阀可以通过产生差压的阀装置来设定和变化。

公开(公告)号：US4617798A

公开(公告)日：1986-10-21

申请号：US596293

申请日：1984-04-03

申请人： Alfred Krusche ,  Walter Kropp

发明人： Alfred Krusche ,  Walter Kropp

IPC分类号： F15B11/00 ,  E02F9/22 ,  F15B11/05 ,  F15B11/16 ,  F15B13/04 ,  F16D31/02

CPC分类号： F15B13/0403 ,  F15B11/165 ,  F15B13/0418 ,  F15B2211/20553 ,  F15B2211/3051 ,  F15B2211/30515 ,  F15B2211/3054 ,  F15B2211/31529 ,  F15B2211/31558 ,  F15B2211/31576 ,  F15B2211/329 ,  F15B2211/5059 ,  F15B2211/5159 ,  F15B2211/6052 ,  F15B2211/6055 ,  F15B2211/6057 ,  F15B2211/7053 ,  F15B2211/71 ,  Y10T137/86702

摘要： A hydrostatic drive is provided having an adjustable pump connected with a pump servo positioned by a control pressure from a line connected between the consumer and an adjustable measuring restrictor which in turn is connected to a switching means which includes a plurality of hollow ended main spools in boreholes in a housing, and secondary spools in said hollow ends acting with radial passages in the main spool to form parallel connected restrictors.

摘要翻译： 提供一种液压驱动器，其具有与泵伺服机连接的可调节泵，所述泵伺服机构通过来自连接在所述消耗器与可调节测量限制器之间的线路的控制压力定位，所述可调节测量限制器又连接到开关装置，所述切换装置包括多个中空的主线轴 壳体中的钻孔，以及在所述中空端中的次级阀芯，其与主阀芯中的径向通道作用，以形成并联连接的限流器。