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    Fan Drive System
    21.
    发明申请
    Fan Drive System 审中-公开
    风扇驱动系统

    公开(公告)号：US20100303643A1

    公开(公告)日：2010-12-02

    申请号：US12438532

    申请日：2007-07-19

    申请人： Toyomi Kataoka ,  Junichi Fukushima ,  Kazuhiro Maruta ,  Naoki Ishizaki

    发明人： Toyomi Kataoka ,  Junichi Fukushima ,  Kazuhiro Maruta ,  Naoki Ishizaki

    IPC分类号： F04B49/00

    CPC分类号： F15B11/165 ,  E02F9/2203 ,  E02F9/2228 ,  E02F9/2232 ,  E02F9/225 ,  E02F9/2296 ,  F01P7/044 ,  F15B11/05 ,  F15B11/168 ,  F15B2211/20523 ,  F15B2211/20553 ,  F15B2211/40553 ,  F15B2211/6054 ,  F15B2211/6343 ,  F15B2211/654 ,  F15B2211/7058

    摘要： A fan drive system for driving an engine cooling fan mounted in a working machine is described. The fan drive system includes a variable displacement pump that supplies oil to an actuator and is also used as a hydraulic pump for the hydraulic motor that drives the cooling fan. A pump displacement of a variable displacement pump can be controlled in accordance with the load of the working machine, and when a load is not generated in the working machine, the pump displacement of the variable displacement pump can be controlled in accordance with a load pressure of a hydraulic motor which drives a cooling fan. Examples of such working machines include a forklift, a skid steer loader (SSL) and a crawler dump.

    摘要翻译： 描述了用于驱动安装在工作机中的发动机冷却风扇的风扇驱动系统。 风扇驱动系统包括可变排量泵，其向致动器供油，并且还用作用于驱动冷却风扇的液压马达的液压泵。 可以根据作业机械的负载来控制可变排量泵的泵排量，并且当在工作机械中不产生负载时，可以根据负载压力来控制可变排量泵的泵排量 驱动冷却风扇的液压马达。 这种工作机器的示例包括叉车，滑移装载机（SSL）和履带式倾卸装置。

    Hydraulic circuit system
    24.
    发明授权
    Hydraulic circuit system 失效
    液压回路系统

    公开(公告)号：US5477678A

    公开(公告)日：1995-12-26

    申请号：US839664

    申请日：1992-02-14

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

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

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

    CPC分类号： E02F9/2214 ,  F15B11/16 ,  F15B13/0417 ,  F15B2211/20546 ,  F15B2211/3054 ,  F15B2211/3111 ,  F15B2211/329 ,  F15B2211/6054 ,  F15B2211/71

    摘要： In a hydraulic circuit system, when pressurized oil discharged from a single hydraulic pump is supplied to a plurality of actuators: the pressurized oil is supplied to heavily-loaded ones of the actuators at gradually reducing flow rates to reduce a shock, while supplied to lightly-loaded ones of the actuators at gradually increasing flow rates to increase working speeds of these lightly-loaded actuators. The hydraulic circuit system comprises a plurality of directional control valves (2) one of which is provided with pressure-compensated flow control valves (18) each of which is provided with a load lead-in passage having a restriction means (R). In addition, further comprised in the system are: relief valves (22, 22) for relieving the pressurized oil under the influence of load pressure of the actuators (3) operated by the directional control valves (2); a restriction orifice (24) provided in a drain side of each of the relief valves so as to produce pressure therein.

    摘要翻译： 在液压回路系统中，当从单个液压泵排出的加压油被供给到多个致动器时：在逐渐减小流量的同时向加载的致动器供应压力油，以减少冲击，同时供给轻度 在逐渐增加的流量下执行器中的一个，以增加这些轻载驱动器的工作速度。 液压回路系统包括多个方向控制阀（2），其中一个方向控制阀设置有压力补偿流量控制阀（18），每个阀都设置有具有限制装置（R）的负载引入通道。 此外，该系统还包括：用于在由方向控制阀（2）操作的致动器（3）的负载压力的影响下释放加压油的安全阀（22,22）; 设置在每个安全阀的排水侧的限制孔（24），以在其中产生压力。

    Device for controlling displacement of variable displacement hydraulic pump
    25.
    发明授权
    Device for controlling displacement of variable displacement hydraulic pump 失效
    用于控制变量液压泵排量的装置

    公开(公告)号：US4599050A

    公开(公告)日：1986-07-08

    申请号：US698470

    申请日：1985-02-05

    申请人： Naoki Ishizaki ,  Koichi Morita

    发明人： Naoki Ishizaki ,  Koichi Morita

    IPC分类号： F04D15/00 ,  F04B1/32 ,  F04B49/00 ,  F04B49/08

    CPC分类号： F04B49/002 ,  F04B1/324 ,  F04B49/08 ,  F04B2201/1202 ,  F04B2201/1204

    摘要： Disclosed herein is a device for controlling displacement of a variable displacement hydraulic pump comprising a displacement control system for receiving a discharge pressure of the variable displacement hydraulic pump and a discharge pressure of a fixed displacement hydraulic pump to control the displacement of the variable displacement hydraulic pump. The displacement control system comprises a servopiston including a helical compression spring for maintaining the variable displacement hydraulic pump at a maximum swash angle in a neutral position of associated operating valve, a servovalve including a spool for selectively controlling communication of hydraulic pressure between a control pump and a pair of fluid chambers defined in the servopiston, a control piston connected through a control lever pivotably supported by a pivot pin to the spool and the servopiston, at least two helical compression springs for biasing the control piston and controlling torque and flow so as to approximate same to a constant torque curve, a floating spring seat interposed between the helical compression springs, and a guide rod for guiding the floating spring seat and accommodated in a bore formed in the housing at a base portion thereof to define a pressure chamber pressurized by a biasing spring, the pressure chamber being communicated through a conduit to a discharge passage of the fixed displacement hydraulic pump.

    摘要翻译： 本文公开了一种用于控制可变排量液压泵的排量的装置，包括用于接收可变排量液压泵的排出压力的位移控制系统和固定排量液压泵的排出压力，以控制可变排量液压泵的排量 。 位移控制系统包括一个伺服机构，包括螺旋压缩弹簧，用于将可变排量液压泵保持在相关联的操作阀的中立位置处的最大斜角;伺服阀包括用于选择性地控制控制泵和 限定在伺服电机中的一对流体室，通过可枢转地由枢轴销支撑到阀芯和伺服阀的控制杆连接的控制活塞，至少两个螺旋压缩弹簧，用于偏压控制活塞并控制扭矩和流量，以便 大致与恒定扭矩曲线相同，插入在螺旋压缩弹簧之间的浮动弹簧座，以及用于引导浮动弹簧座并且容纳在其基部的形成在壳体中的孔中的导杆，以限定由 偏置弹簧，压力室通过公共部件连通 定位到固定排量液压泵的排放通道。

    Bent Axis Type Variable Displacement Pump/Motor
    26.
    发明申请
    Bent Axis Type Variable Displacement Pump/Motor 审中-公开
    弯轴型可变排量泵/电机

    公开(公告)号：US20090290996A1

    公开(公告)日：2009-11-26

    申请号：US12085178

    申请日：2006-11-01

    申请人： Naoki Ishizaki

    发明人： Naoki Ishizaki

    IPC分类号： F04B1/24 ,  F03C1/253

    CPC分类号： F04B1/2042 ,  F04B1/328

    摘要： The present invention relates to an improvement of an bent axis type variable displacement pump/motor in which a piston moves reciprocatingly inside a cylinder and a state in which three parties of a cylinder block, a valve plate member, and a case are always in close contact with each other is secured by configuring the valve plate member with a plurality of valve plate parts comprising a first valve plate part and a second valve plate part and placing the valve plate member between a block side sliding surface of a cylinder block and a concave guide surface of the case while the plurality of valve plate parts are slidably brought into close contact with each other via sliding contact surfaces.

    摘要翻译： 本发明涉及一种活塞在气缸内往复运动的弯曲轴型可变排量泵/电动机的改进，其中气缸体，阀板构件和壳体的三方总是处于闭合状态 通过将阀板部件配置成包括第一阀板部件和第二阀板部件的多个阀板部件并将阀板部件放置在气缸体的块侧滑动面和凹部 多个阀板部分通过滑动接触表面可滑动地彼此紧密接触时，壳体的引导表面。

    Actuator control device and bucket posture control device for hydraulic drive machine
    27.
    发明授权
    Actuator control device and bucket posture control device for hydraulic drive machine 有权
    液压驱动机构执行机构控制装置及斗姿控制装置

    公开(公告)号：US06561751B1

    公开(公告)日：2003-05-13

    申请号：US09666138

    申请日：2000-09-20

    申请人： Naoki Ishizaki ,  Shuuji Hori ,  Shinobu Nagura

    发明人： Naoki Ishizaki ,  Shuuji Hori ,  Shinobu Nagura

    IPC分类号： B66F900

    CPC分类号： E02F3/433 ,  E02F9/2225 ,  E02F9/2285 ,  F15B11/163 ,  F15B11/20 ,  F15B2211/30535 ,  F15B2211/50536 ,  F15B2211/57 ,  F15B2211/575 ,  F15B2211/6313 ,  F15B2211/6336 ,  F15B2211/6355 ,  F15B2211/6654 ,  F15B2211/71 ,  F15B2211/75

    摘要： A high versatility can be obtained, the pipe laying can be configured easily and, by virtue of the fact that a pilot pressured oil is managed, a hydraulic apparatus can be compacted. A differential pressure &Dgr;P between a pressure of the pressured oil on an upstream side and a pressure of the pressured oil on a downward side of operation valves is set to a certain value by a front-to-rear differential pressure stabilizer. As a result, flow rates Q1, Q2 of the operation valves are determined univocally in accordance with opening surface areas (opening amounts) A1, A2 of the operation valves, irrespective of load fluctuations, that is to say, a fluctuation of &Dgr;P. When one of operation members are operated, the opening amount A2 of the other operation valve correspondent with the other operation member is changed in accordance with an operation amount S1 of that operation member, and the other hydraulic actuator correspondent with the other operation valve is driven.

    摘要翻译： 可以获得高通用性，可以容易地构造管道敷设，并且由于管理先导式加压油的事实，可以压缩液压装置。 在上游侧的加压油的压力与操作阀的下侧的加压油的压力之间的差压DELTAP通过前后差压稳定器设定为一定值。 结果，操作阀的流量Q1，Q2根据操作阀的开口面积（开口量）A1，A2单独确定，而不管负载波动如何，即DELTAP的波动。 当操作构件中的一个操作时，与其他操作构件相对应的另一个操作阀的开口量A2根据该操作构件的操作量S1而改变，并且与其他操作阀对应的另一个液压致动器被驱动 。

    Apparatus for altering operation apparatus and actuator combinations, and operation lever apparatus
    28.
    发明授权
    Apparatus for altering operation apparatus and actuator combinations, and operation lever apparatus 失效

    公开(公告)号：US06435289B1

    公开(公告)日：2002-08-20

    申请号：US09666451

    申请日：2000-09-21

    申请人： Shuuji Hori ,  Naoki Ishizaki ,  Yasuhiro Sato ,  Masayoshi Mototani

    发明人： Shuuji Hori ,  Naoki Ishizaki ,  Yasuhiro Sato ,  Masayoshi Mototani

    IPC分类号： B62D506

    CPC分类号： E02F9/2292 ,  B62D11/183 ,  E02F9/2004 ,  E02F9/2012 ,  E02F9/2296

    摘要： The aim is to improve operability in vehicles such as skid steer loaders and to reduce the burden on the operator. It is made easy to switch between a first operation pattern wherewith only one operation apparatus of two operation apparatuses is used in driving two actuators, and a second operation pattern wherewith the two actuators are driven using both of the two operation apparatuses. It is made possible to hold operation positions, and to release held positions, whether with an operation lever apparatus that is capable of operation in only one directional component or with an operation lever apparatus that is capable of operation in two directional components in the forward and backward direction and in the left and right direction. When a change to a first combination is designated by a pattern switching lever, the first combination (first operation pattern) is switched to by switching means. This effects correspondences between operation direction signals output from one operation apparatus of two (left and right) operation apparatuses and the drive directions of left and right running actuators. It is thereby made possible to drive left and right running bodies by operating one of the operation levers (the left operation lever). When a change to a second combination is designated by the pattern switching lever, the second pattern (second operation pattern) is switched to by the switching means. Thereby correspondences are effected between the operation direction signals output from the left operation apparatus and the drive directions of the left running actuator, and correspondences are effected between the operation direction signals output from the right operation apparatus and the drive directions of the right running actuator. It is thereby made possible to drive the left and right running bodies by operating both the left and the right operation lever. When a switching valve is switched to a valve position, and the operation lever has been operated so as to tilt, the operation lever is held in that tilted position. And when the switching valve is switched to another valve position, the operation lever holding condition is released.

    Capacity control apparatus for a variable capacity hydraulic pump
    29.
    发明授权
    Capacity control apparatus for a variable capacity hydraulic pump 失效
    用于变容量液压泵的容量控制装置

    公开(公告)号：US5839885A

    公开(公告)日：1998-11-24

    申请号：US776526

    申请日：1997-02-27

    申请人： Yosuke Oda ,  Kenji Morino ,  Naoki Ishizaki

    发明人： Yosuke Oda ,  Kenji Morino ,  Naoki Ishizaki

    IPC分类号： E02F9/22 ,  F04B49/00 ,  F04B49/08 ,  F15B11/00

    CPC分类号： F04B49/002 ,  F04B49/08 ,  F04B2201/1204 ,  F04B2205/08

    摘要： A capacity control apparatus for a variable capacity hydraulic pump including: a capacity control cylinder having a capacity control piston for driving a capacity control member of the hydraulic pump, with a large diameter chamber and a small diameter chamber disposed at both sides of the capacity control piston, and driving the capacity control piston with a pressure fluid that is supplied into the larger diameter chamber, in a direction in which the capacity of the hydraulic pump may be reduced and for driving the capacity control piston with a pressure fluid that is supplied into the small diameter chamber, in a direction in which the capacity may be increased; a passage for the small diameter chamber to communicate with a pump discharge path; at least one control valve for controlling the capacity of the hydraulic pump by selectively communicating the large diameter chamber with either a pump pressure discharge path and a reservoir; and a variable throttle valve in a passage with the at least one control valve, in which the variable throttle valve is switched into a first state in which a throttled area of aperture in inverse proportion to a self discharge pressure of the pump discharge path is established and into a second state in which a predetermined throttled area of aperture that is independent of the self discharge pressure is established in response to an external signal.

    摘要翻译： PCT No.PCT / JP95 / 01839 Sec。 371日期1997年2月27日 102（e）日期1997年2月27日PCT提交1995年9月14日PCT公布。 出版物WO96 / 08652 日本特开1996年3月21日用于变容量液压泵的容量控制装置包括：容量控制缸，具有用于驱动液压泵的容量控制构件的容量控制活塞，具有设置在两者上的大直径室和小直径室 容量控制活塞的侧面，并且利用供给到较大直径室的压力流体沿液压泵的容积减小的方向驱动容量控制活塞，并且以压力驱动容量控制活塞 在容量可以增加的方向上供给到小直径室中的流体; 用于小直径室的通道与泵排出路径连通; 至少一个控制阀，用于通过选择性地将所述大直径室与泵压力排放路径和储存器连通来控制所述液压泵的容量; 以及具有至少一个控制阀的通道中的可变节流阀，其中可变节流阀被切换到第一状态，其中与泵排出路径的自排气压力成反比的开口的节流区域成立 并且进入第二状态，其中响应于外部信号建立独立于自排气压力的预定节流孔径区域。

    Directional control valve assembly having a pressure compensation valve
    30.
    发明授权
    Directional control valve assembly having a pressure compensation valve 失效
    具有压力补偿阀的定向控制阀组件

    公开(公告)号：US5778929A

    公开(公告)日：1998-07-14

    申请号：US750994

    申请日：1996-12-24

    申请人： Naoki Ishizaki ,  Mitsumasa Akashi

    发明人： Naoki Ishizaki ,  Mitsumasa Akashi

    IPC分类号： F15B11/00 ,  F15B11/05 ,  F15B13/04

    CPC分类号： F15B13/0403 ,  F15B13/0417 ,  F15B13/0418 ,  Y10T137/87169 ,  Y10T137/87185

    摘要： A directional control valve assembly having a pressure compensation valve in which there are provided a directional control valve in which a main spool is slidably inserted in a spool bore that is formed with a pump port, a first and a second load pressure detecting port, a first and a second actuator port, and a first and a second tank port; The pressure compensation valve that is connected with the pump port, includes: a pressure releasing zone which is adapted to the first and second load pressure detecting ports with the first and second tank ports when the spool lies its neutral position, and to block the first or second load pressure detecting port from the first or second tank port when the main spool lies at an intermediate site between the neutral position and a pressurized fluid supply position, and a passage having a counter flow preventing function for communicating the first or second actuator port and first and second load pressure detecting port with each other when the spool lies at an intermediate site between the neutral position and the pressurized fluid supply position.

    摘要翻译： PCT No.PCT / JP95 / 01274 Sec。 371日期：1996年12月24日 102（e）日期1996年12月24日PCT提交1995年6月26日PCT公布。 公开号WO96 / 00351 日期1996年1月4日一种具有压力补偿阀的方向控制阀组件，其中设置有方向控制阀，其中主阀芯可滑动地插入阀芯孔中，阀芯孔形成有泵口，第一和第二负载 压力检测端口，第一和第二致动器端口以及第一和第二罐口; 与泵口连接的压力补偿阀包括：当阀芯处于其中立位置时适于具有第一和第二罐口的第一和第二负载压力检测端口的压力释放区，并且阻挡第一 或第二负载压力检测端口，当主阀芯位于中间位置和加压流体供应位置之间的中间位置时，具有防逆流功能的通道，用于使第一或第二致动器端口 以及当所述卷轴位于所述中立位置和所述加压流体供给位置之间的中间位置时，所述第一和第二负载压力检测端口彼此相对。