公开(公告)号：US08393348B2

公开(公告)日：2013-03-12

申请号：US12527956

申请日：2008-02-18

申请人： Mitsuhisa Tougasaki ,  Katsumi Ueno

发明人： Mitsuhisa Tougasaki ,  Katsumi Ueno

IPC分类号： G05D11/00

CPC分类号： F15B13/0417 ,  F15B13/0405 ,  F15B2211/40515 ,  F15B2211/41509 ,  F15B2211/428 ,  F15B2211/455 ,  Y10T137/2625 ,  Y10T137/7922 ,  Y10T137/86549 ,  Y10T137/86558 ,  Y10T137/87185 ,  Y10T137/87917

摘要： A control valve has a pressure chamber 24 causing a pressure to act on a valve element 21 of a check valve 20, an oil chamber 39 around the valve 21, a slot 40 formed in the valve element 21 and interconnecting the oil chamber 39 and the pressure chamber 24with each other and, a control valve 25 connected directly to a divergence portion 17 and the oil chamber 39 and capable of permitting or cutting off communication between the divergence portion 17 and the oil chamber 39 and changing an opening degree of the communication, an intra-valve-element passage 42, a slot 41 formed in an outer peripheral wall of the valve element 21 and communicating the passage 42 and the chamber 39 with each other, and a spring-return auxiliary check valve 43 for allowing pressure oil to flow from a supply passage 15 into the intra-valve-element passage 42.

摘要翻译： 控制阀具有压力室24，其压力作用在止回阀20的阀元件21上，围绕阀21的油室39，形成在阀元件21中的槽40，并将油室39和 压力室24彼此连接，并且控制阀25直接连接到发散部分17和油室39，并且能够允许或切断发散部分17和油室39之间的连通并改变通信的开度， 阀元件通道42，形成在阀元件21的外周壁中并使通道42和腔室39彼此连通的槽41和弹簧复位辅助止回阀43，用于使压力油 从供给通道15流入阀元件通道42。

公开(公告)号：US20100059130A1

公开(公告)日：2010-03-11

申请号：US12527956

申请日：2008-02-18

申请人： Mitsuhisa Tougasaki ,  Katsumi Ueno

发明人： Mitsuhisa Tougasaki ,  Katsumi Ueno

IPC分类号： G05D7/00 ,  F16K15/00 ,  F16K11/07

CPC分类号： F15B13/0417 ,  F15B13/0405 ,  F15B2211/40515 ,  F15B2211/41509 ,  F15B2211/428 ,  F15B2211/455 ,  Y10T137/2625 ,  Y10T137/7922 ,  Y10T137/86549 ,  Y10T137/86558 ,  Y10T137/87185 ,  Y10T137/87917

摘要： [PROBLEM] To provide a directional control valve assembly, in which a check valve for controlling a flow rate of pressure oil to be guided to a directional control valve as a main valve and a control means for limiting an opening degree of the check valve by a pressure are integrated with the directional control valve and therefore, a flow hardly occurs in the pressure oil that produces the pressure.[SOLUTION] A control means has a pressure chamber 24 for causing a pressure to act on a valve element 21 of a check valve 20, an oil chamber 39 around the valve element 21, a slot 40 formed in the valve element 21 and interconnecting the oil chamber 39 and the pressure chamber 24 with each other and, a control valve 25 connected directly to a divergence portion 17, which is interconnected with a slide hole in a directional control valve, and the oil chamber 39 and capable of permitting or cutting off communication between the divergence portion 17 and the oil chamber 39 and changing an opening degree of the communication, an intra-valve-element passage 42, a control slot 41 formed in an outer peripheral wall of the valve element 21 and communicating the intra-valve-element passage 42 and the oil chamber 39 with each other, and a spring-return auxiliary check valve 43 for allowing pressure oil to flow from a supply passage 15 into the intra-valve-element passage 42.

摘要翻译： 本发明提供一种方向控制阀组件，其中，用于控制压力油的流量被引导到作为主阀的方向控制阀的止回阀和用于限制止回阀的开度的控制装置 压力与方向控制阀一体化，因此在产生压力的压力油中几乎不发生流动。 [解决方案]控制装置具有用于使压力作用在止回阀20的阀元件21上的压力室24，围绕阀元件21的油室39，形成在阀元件21中的槽40， 油室39和压力室24彼此连接，并且直接连接到与方向控制阀中的滑动孔相互连接的发散部分17的控制阀25和油室39并且能够允许或切断 发散部分17和油室39之间的连通并改变连通的开度，阀元件通道42，形成在阀元件21的外周壁中的控制槽41，并且连通阀 - 元件通道42和油室39;以及弹簧复位辅助止回阀43，用于使压力油从供给通道15流入阀元件通道42。

公开(公告)号：US06438952B1

公开(公告)日：2002-08-27

申请号：US09673938

申请日：2000-10-24

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

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

IPC分类号： F15B1105

CPC分类号： F15B11/163 ,  E02F9/2221 ,  E02F9/2225 ,  F15B11/0406 ,  F15B13/0417 ,  F15B2211/20538 ,  F15B2211/20553 ,  F15B2211/30505 ,  F15B2211/30525 ,  F15B2211/30535 ,  F15B2211/40515 ,  F15B2211/41509 ,  F15B2211/41527 ,  F15B2211/455 ,  F15B2211/46 ,  F15B2211/50518 ,  F15B2211/50554 ,  F15B2211/5151 ,  F15B2211/57 ,  F15B2211/6051 ,  F15B2211/6052 ,  F15B2211/6054 ,  F15B2211/6055 ,  F15B2211/7052 ,  F15B2211/7058 ,  F15B2211/71 ,  F15B2211/76

摘要： A hydraulic circuit system having a load sensing system including a hydraulic pump, a plurality of hydraulic actuators driven by a hydraulic fluid delivered from the hydraulic pump, a plurality of control valves disposed between the hydraulic pump and the plurality of acutators, a signal detecting hydraulic line to which a signal pressure based on a maximum load pressure among the plurality of hydraulic actuators is introduced, and pump control means for controlling a delivery pressure of the hydraulic pump to be held higher than the signal pressure by a predetermined value.

摘要翻译： 一种具有负载感测系统的液压回路系统，包括液压泵，由从液压泵输送的液压流体驱动的多个液压致动器，设置在液压泵和多个辅助器之间的多个控制阀， 引入基于多个液压致动器中的最大负载压力的信号压力的线路，以及用于控制液压泵的输送压力保持高于信号压力预定值的泵控制装置。

公开(公告)号：US06453585B1

公开(公告)日：2002-09-24

申请号：US09980543

申请日：2001-12-04

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

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

IPC分类号： F15B1100

CPC分类号： E02F9/2267 ,  E02F9/2239 ,  E02F9/2271 ,  E02F9/2282 ,  E02F9/2292 ,  E02F9/2296 ,  F15B11/162 ,  F15B11/17 ,  F15B2211/20553 ,  F15B2211/20576 ,  F15B2211/3116 ,  F15B2211/329 ,  F15B2211/40515 ,  F15B2211/428 ,  F15B2211/7142 ,  F15B2211/78

摘要： To permit forcedly stopping combining flows of pressure fluid from two hydraulic pumps when a load pressure on a combined-flow-driven actuator in which the flows of pressure fluid are combined together exceeds a predetermined pressure and hence to permit driving the combined-flow-driven actuator with the pressure fluid from only one of the hydraulic pumps, a hydraulic drive system is provided with a flow-combining valve 2 connected to a directional control valve 1 in a first group of directional control valves via a center bypass passage 3, a flow-combining circuit 5 communicating the flow-combining valve 2 and a supply port of a flow-combining directional control valve 4 with each other, and a combined-flow-driven actuator 20 controlled by the flow-combining directional control valve 4, and performs overall power control such that a total value of input torques to the two hydraulic pumps 15,18 does not exceed an output torque from an engine 30. The hydraulic drive system is provided with a canceling valve 10 to cancel the combination of flows by the flow-combining valve 2 when a load pressure on the combined-flow-driven actuator 20 becomes higher than a predetermined pressure.

摘要翻译： 当压力流体组合在一起的组合流动驱动致动器上的负载压力超过预定压力并因此允许驱动组合流动驱动时，允许强制停止组合来自两个液压泵的压力流体流 致动器与来自仅一个液压泵的压力流体相连，液压驱动系统设置有通过中心旁通通道3连接到第一组方向控制阀中的方向控制阀1的流动合并阀2，流动 将组合阀2和组合方向控制阀4的供给口彼此连通的组合回路5和由组合方向控制阀4控制的组合流动驱动致动器20，并进行 整体功率控制使得两个液压泵15,18的输入转矩的总值不超过来自发动机30的输出扭矩。液压驱动系统设置为w 一个取消阀10，当组合流动致动器20上的负载压力变得高于预定压力时，消除组合阀2的流动的组合。

公开(公告)号：US06378302B1

公开(公告)日：2002-04-30

申请号：US09674366

申请日：2000-10-31

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

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

IPC分类号： F16D3102

CPC分类号： F15B11/167 ,  E02F9/128 ,  E02F9/2225 ,  E02F9/226 ,  E02F9/2296 ,  F15B11/163 ,  F15B11/168 ,  F15B13/0417 ,  F15B2211/40515 ,  F15B2211/40569 ,  F15B2211/428 ,  F15B2211/455 ,  F15B2211/46 ,  F15B2211/50518 ,  F15B2211/50536 ,  F15B2211/5157 ,  F15B2211/55 ,  F15B2211/6355 ,  F15B2211/651 ,  F15B2211/71 ,  F15B2211/78

摘要： A hydraulic line slit 20 formed in a valve body 50 of a flow distribution valve 5-1, a control chamber 70, and a hydraulic line 31-1 are connected to a signal transmitting hydraulic line 9. A lap portion 32 is formed in the hydraulic line slit 20, the lap portion 32 having a check valve function with a lap amount X when the valve body 50 is in a cutoff position. A 2-position, 3-way valve 11 is disposed in the hydraulic line 31-1. The valve 11 connects the control chamber 70 of the flow distribution valve 5-1 to only the signal transmitting hydraulic line 9 when an external signal F is not applied, and to both the signal transmitting hydraulic line 9 and a lower-pressure detecting hydraulic line 35, which is connected an outlet passage 5b of a flow distribution valve 5-2 on the side of a hydraulic actuator 3-2, when the external signal F is applied. With such an arrangement, during a combined operation including driving of an inertial body, a pressure on the lower load pressure side can be detected as a signal pressure without cutting off a load-pressure detecting hydraulic line on the higher load pressure side. Further, a portion for detecting a load pressure is simplified and the flow distributing function is not impaired.

摘要翻译： 形成在分流阀5-1的阀体50上的液压线狭缝20，控制室70以及液压管线31-1连接到信号传输液压管路9上。搭接部分32形成在 液压线狭缝20，当阀体50处于切断位置时，具有止回阀的搭接部32具有搭接量X。 2位三通阀11设置在液压管线31-1中。 当未施加外部信号F时，阀11将分流阀5-1的控制室70仅连接到信号传输液压管路9，并且在信号传输液压管线9和低压检测液压管线 当外部信号F被施加时，其连接有液压致动器3-2一侧的分流阀5-2的出口通道5b。 通过这样的布置，在包括惯性体的驱动的组合操作中，可以将下负载压力侧的压力检测为信号压力，而不会在较高负载压力侧切断负载压力检测液压管路。 此外，用于检测负载压力的部分被简化，并且流量分配功能不受损害。

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：US06422009B1

公开(公告)日：2002-07-23

申请号：US09744308

申请日：2001-01-23

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

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

IPC分类号： F15B1100

CPC分类号： E02F9/2296 ,  E02F9/2232 ,  F04B49/002 ,  F15B11/165 ,  F15B11/17 ,  F15B2211/20546 ,  F15B2211/20584 ,  F15B2211/253 ,  F15B2211/30515 ,  F15B2211/40515 ,  F15B2211/41572 ,  F15B2211/50572 ,  F15B2211/513 ,  F15B2211/5158 ,  F15B2211/6054 ,  F15B2211/6355 ,  F15B2211/7052 ,  F15B2211/71 ,  F15B2211/88 ,  Y10T137/2705

摘要： A fixed throttle 12 is provided in a delivery line 11a of a fixed pump 11 driven by an engine 9 for rotation together with a hydraulic pump 1, and a differential pressure detecting valve 31 is provided in association with the fixed throttle 12 to detect a differential pressure across the fixed throttle 12 and to output a pressure lower than the detected differential pressure by a predetermined value. The output of the differential pressure detecting valve 31 is introduced, as a signal pressure, to a pressure bearing section 5c of a load sensing valve 5, thereby setting a target differential pressure. With that arrangement, a pressure in link with an engine revolution speed can be directly employed as the set differential pressure of the load sensing valve, and the structure of the load sensing valve can be avoided from being complicated. Further, in the idling revolution range in which the work amount is relatively small, the displacement of the hydraulic pump can be reduced to improve fine operability and cut down fuel consumption.

摘要翻译： 固定节流阀12设置在由液压泵1与发动机9一起驱动的固定泵11的输送管线11a中，并且与固定节流阀12相关联地设置有差压检测阀31，以检测差速器 并且将低于检测到的差压的压力输出预定值。 差压检测阀31的输出作为信号压力引入负载检测阀5的压力承受部5c，从而设定目标压差。 通过这种结构，可以直接使用与发动机转速相关的压力作为负载感测阀的设定差压，并且可以避免负载感测阀的结构复杂化。 此外，在工作量相对较小的怠速转速范围内，能够降低液压泵的排量，提高精细的操作性，并且降低燃料消耗。

公开(公告)号：US06408876B1

公开(公告)日：2002-06-25

申请号：US09601251

申请日：2000-10-13

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

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

IPC分类号： F16K1124

CPC分类号： F15B11/165 ,  F15B2211/20546 ,  F15B2211/20576 ,  F15B2211/30525 ,  F15B2211/329 ,  F15B2211/6355 ,  F15B2211/67 ,  F16K11/07 ,  F16K27/041 ,  Y10T137/87193 ,  Y10T137/87201

摘要： It is an object of the present invention to provide a control valve which can reduce the number of external lines connected to a hydraulic remote control valve. A control valve 1 for controlling hydraulic cylinders 2,2′ is provided, in one 26 of spool covers, with fluid passages 27,27′, a shuttle valve 28 for selecting higher one of pilot pressures to be transmitted to these fluid passages 27,27′, and a fluid passage 29 for transmitting the pressure selected by the shuttle valve 28. The fluid passages 27,27′ are in communication with pressure fluid ports 25,25′ as connection ports for pilot lines 24a,24c. The control valve 1 is also provided, in the other spool cover 32, with fluid passages 33,33′, a shuttle valve 34 for selecting higher one of pilot pressures to be transmitted to these fluid passages 33,33′, and a fluid passage 35 for transmitting the pressure selected by the shuttle valve 34. The fluid passages 33,33′ are in communication with pressure fluid ports 31,31′ as connection ports for pilot lines 24b,24d.

摘要翻译： 本发明的目的是提供一种可以减少连接到液压遥控阀的外部线路的数量的控制阀。 用于控制液压缸2,2'的控制阀1设置在一个26个卷轴盖中，其中包括流体通道27,27'，用于选择要传递到这些流体通道27的先导压力中的较高一个的往复阀28， 27'和用于传递由梭阀28选择的压力的流体通道29.流体通道27,27'与用于引导管线24a，24c的连接端口的压力流体端口25,25'连通。 控制阀1还在另一个卷轴盖32中设置有流体通道33,33'，用于选择要传递到这些流体通道33,33'的先导压力中的较高一个的往复阀34和流体通道 35，用于传递由梭阀34选择的压力。流体通道33,33'与用于导向管线24b，24d的连接端口的压力流体端口31,31'连通。

公开(公告)号：US07265304B2

公开(公告)日：2007-09-04

申请号：US11295617

申请日：2005-12-07

申请人： Nobuhiko Ichiki ,  Mitsuhisa Tougasaki ,  Kaoru Endo ,  Hiroyasu Masubuchi

发明人： Nobuhiko Ichiki ,  Mitsuhisa Tougasaki ,  Kaoru Endo ,  Hiroyasu Masubuchi

IPC分类号： H01H25/00

CPC分类号： G05G9/047 ,  E02F9/2004 ,  F15B13/0424 ,  G05G2009/04748 ,  Y10T74/20201

摘要： A joystick for an electro-hydraulic control system is provided with a rotary potentiometer having a pivotable arm. This pivotable arm is integrally arranged on a rotary shaft and pivots responsive to pivotal control of a joystick in a predetermined direction or a direction opposite to the predetermined direction. The joystick is also provided with a torsion coil spring for normally holding the pivotable arm in a neutral position, a pin arranged on the pivotable arm and capable of expanding the torsion coil spring upon pivotal movement of the pivotable arm, a holding pin for holding the torsion coil spring at its coil portion, and a cover member having a pair of guide portions for limiting movements of the coil portion of the torsion coil spring in the predetermined direction and the opposition direction when the torsion coil spring is in its neutral position.

摘要翻译： 用于电液控制系统的操纵杆设置有具有可枢转臂的旋转电位器。 该可枢转臂一体地布置在旋转轴上并且响应于操纵杆在预定方向或与预定方向相反的方向的枢转控制而枢转。 操纵杆还设置有用于将可枢转臂正常地保持在中立位置的扭力螺旋弹簧，设置在可枢转臂上的销，并且能够在可枢转臂的枢转运动时使扭转螺旋弹簧膨胀;保持销， 扭转螺旋弹簧在其线圈部分，以及盖构件，具有一对引导部分，用于在扭转螺旋弹簧处于其中立位置时限制扭转螺旋弹簧的线圈部分在预定方向和相反方向上的运动。

公开(公告)号：US20060117891A1

公开(公告)日：2006-06-08

申请号：US11295617

申请日：2005-12-07

申请人： Nobuhiko Ichiki ,  Mitsuhisa Tougasaki ,  Kaoru Endo ,  Hiroyasu Masubuchi

发明人： Nobuhiko Ichiki ,  Mitsuhisa Tougasaki ,  Kaoru Endo ,  Hiroyasu Masubuchi

IPC分类号： G05G9/047

CPC分类号： G05G9/047 ,  E02F9/2004 ,  F15B13/0424 ,  G05G2009/04748 ,  Y10T74/20201

摘要： A joystick for an electro-hydraulic control system is provided with a rotary potentiometer having a pivotable arm. This pivotable arm is integrally arranged on a rotary shaft and pivots responsive to pivotal control of a joystick in a predetermined direction or a direction opposite to the predetermined direction. The joystick is also provided with a torsion coil spring for normally holding the pivotable arm in a neutral position, a pin arranged on the pivotable arm and capable of expanding the torsion coil spring upon pivotal movement of the pivotable arm, a holding pin for holding the torsion coil spring at its coil portion, and a cover member having a pair of guide portions for limiting movements of the coil portion of the torsion coil spring in the predetermined direction and the opposition direction when the torsion coil spring is in its neutral position.

摘要翻译： 用于电液控制系统的操纵杆设置有具有可枢转臂的旋转电位器。 该可枢转臂一体地布置在旋转轴上并且响应于操纵杆在预定方向或与预定方向相反的方向的枢转控制而枢转。 操纵杆还设置有用于将可枢转臂正常地保持在中立位置的扭力螺旋弹簧，设置在可枢转臂上的销，并且能够在可枢转臂的枢转运动时使扭转螺旋弹簧膨胀，保持销用于保持 扭转螺旋弹簧在其线圈部分，以及盖构件，具有一对引导部分，用于在扭转螺旋弹簧处于其中立位置时限制扭转螺旋弹簧的线圈部分在预定方向和相反方向上的运动。