公开(公告)号：US07971434B2

公开(公告)日：2011-07-05

申请号：US11988902

申请日：2006-07-04

Applicant: Naoki Ishizaki ,  Hikosaburo Hiraki ,  Koichiro Itou

Inventor： Naoki Ishizaki ,  Hikosaburo Hiraki ,  Koichiro Itou

IPC: F16H47/02 ,  E02F9/22

CPC classification number: F16H61/44 ,  F16H47/02 ,  F16H61/462

Abstract: A variable capacity pump and two variable capacity motors are connected in a closed circuit. First to fourth drive gears are fitted to motor shafts of the variable capacity motors via clutches. A first driven gear, which meshes with the first and third drive gears, and a second driven gear which meshes with the second and fourth drive gears are fitted to an output shaft. Equivalent capacities of the variable capacity motors are made different. Control is exerted such that the capacities are decreased to zero in order of equivalent capacities. To decrease the capacity of each variable capacity motor, the gear change ratio of the variable capacity motor the capacity of which has decreased to zero is changed to decrease the equivalent capacity and, at the same time, the capacity is increased to maximum. This increases the gear change ratio for the continuously variable transmission and controls acceleration.

Abstract translation: 可变容量泵和两个可变容量电机连接在闭路中。 第一至第四驱动齿轮通过离合器安装到可变容量电动机的电动机轴上。 与第一和第三驱动齿轮啮合的第一从动齿轮和与第二和第四驱动齿轮啮合的第二从动齿轮装配到输出轴。 变容量电机的等效容量是不同的。 施加控制，使得容量按照等效容量的顺序降低到零。 为了降低每个可变容量电动机的容量，其容量减小到零的变量电动机的变速比改变为降低等效容量，同时容量增加到最大。 这增加了无级变速器的变速比，并控制加速度。

公开(公告)号：US07448976B2

公开(公告)日：2008-11-11

申请号：US11961918

申请日：2007-12-20

Applicant: Hikosaburo Hiraki ,  Takashi Kuse ,  Toshikazu Okada ,  Shigeru Yamamoto ,  Naoki Ishizaki

Inventor： Hikosaburo Hiraki ,  Takashi Kuse ,  Toshikazu Okada ,  Shigeru Yamamoto ,  Naoki Ishizaki

IPC: F16H3/72 ,  F16H48/30

CPC classification number: F16H47/04 ,  F16H2037/0866 ,  F16H2037/088

Abstract: A transmission is provided which has a very compact system configuration and is capable of exerting high energy efficiency over all speed regions from a low speed region to a high speed region, while providing improved operability free from a torque shortage. To this end, the transmission has an input shaft, an intermediate output shaft, a planetary gear mechanism, a first pump-motor, and a second pump-motor connected to the first pump-motor, the input shaft being coupled to a first element of the planetary gear mechanism, the second pump-motor being coupled to a second element of the planetary gear mechanism, the intermediate output shaft being coupled to a third element of the planetary gear mechanism, and the transmission further comprising a switching mechanism for selectively coupling the first pump-motor to either the input shaft or the intermediate output shaft.

Abstract translation: 提供了一种具有非常紧凑的系统配置并且能够在从低速区域到高速区域的所有速度区域施加高能量效率的传输，同时提供了没有扭矩不足的改进的可操作性。 为此，变速器具有输入轴，中间输出轴，行星齿轮机构，第一泵电动机和连接到第一泵电动机的第二泵电动机，输入轴与第一元件 所述第二泵电动机联接到所述行星齿轮机构的第二元件，所述中间输出轴联接到所述行星齿轮机构的第三元件，所述变速器还包括用于选择性地联接的切换机构 第一个泵马达到输入轴或中间输出轴。

公开(公告)号：US07070531B2

公开(公告)日：2006-07-04

申请号：US10836360

申请日：2004-04-29

Applicant: Naoki Ishizaki

Inventor： Naoki Ishizaki

IPC: F16H47/04

CPC classification number: F16H47/04 ,  F16H2037/044 ,  F16H2037/049 ,  F16H2037/0873 ,  F16H2047/045

Abstract: A hydromechanical transmission having a continuously variable transmission function and occupying a small area for installation is provided. For this purpose, the transmission includes a driving source (3), a planetary gear speed reducer (5) connected to the driving source, a variable displacement hydraulic pump (11), which is connected to the planetary gear speed reducer, and to which one part of an output force of the driving source is outputted, an output shaft (717), which is connected to the planetary gear speed reducer, and to which the other part of the output force of the driving source is outputted, a first and a second variable displacement hydraulic motors (31, 37) receiving pressure oil from the hydraulic pump and outputting a driving force to the output shaft, and a clutch (45) placed between the second hydraulic motor (37) and the output shaft.

Abstract translation: 提供具有无级变速功能并且占用小面积的用于安装的液压机械变速器。 为此，变速器包括驱动源（3），连接到驱动源的行星齿轮减速器（5），连接到行星齿轮减速器的可变排量液压泵（11），并且其中 输出驱动源的输出力的一部分，与行星齿轮减速器连接并输出驱动源的输出力的另一部分的输出轴（717），第一和第二 从所述液压泵接收压力油并向所述输出轴输出驱动力的第二可变排量液压马达（31,37）以及设置在所述第二液压马达（37）和所述输出轴之间的离合器（45）。

公开(公告)号：US06655229B2

公开(公告)日：2003-12-02

申请号：US09754215

申请日：2001-01-05

Applicant: Yuuichi Yamamoto ,  Yasuhiro Satou ,  Shuuji Hori ,  Naoki Ishizaki

Inventor： Yuuichi Yamamoto ,  Yasuhiro Satou ,  Shuuji Hori ,  Naoki Ishizaki

IPC: F15B1108

CPC classification number: F15B13/0422 ,  G05G9/047 ,  G05G2009/04781 ,  Y10T74/20012 ,  Y10T74/20201 ,  Y10T74/20396 ,  Y10T137/87072

Abstract: It is designed that an oil pressure signal can be output by operating an operation lever in a twisting direction; a structure can be made simple and its assembly and adjustment are easy; an operation force can be reduced; and a layout is not restricted. It is also designed that when the operation lever is left free after it is twisted, it returns smoothly to the original neutral position. When the operation lever is twisted about the lever axis, the shaft supported by bearings is twisted. The twist of the shaft is converted into the movement in a direction to move the pistons by first and second levers, and the pistons are moved. When the pistons are moved, the oil pressure signal is output from the discharge ports. A disk plate is separated into a first disk plate to which the root of the operation lever is attached and a second disk plate which is tiltably supported by a tilting fulcrum. And, the first disk plate is independent of the second disk plate and twisted about the lever axis of the operation lever.

公开(公告)号：US5735311A

公开(公告)日：1998-04-07

申请号：US750876

申请日：1996-12-20

Applicant: Naoki Ishizaki ,  Mitsumasa Akashi

Inventor： Naoki Ishizaki ,  Mitsumasa Akashi

IPC: F15B11/00 ,  F15B11/05 ,  F15B13/04 ,  G05D16/10

CPC classification number: F15B13/0417 ,  G05D16/10 ,  Y10T137/87169

Abstract: A pressure compensation valve comprises a check valve portion having an inlet port that is connected to a discharge path of a hydraulic pump, an outlet port that is connected to an inlet side of a directional control valve, and a valve for controlling an area of opening between both ports. A pressure reduction valve portion has a spool that defines at its both sides a first pressure chamber and a second pressure chamber, respectively, and is adapted to be slidable to allow the valve to be thrusted in a first direction in which the area of opening is increased under a self-load pressure applied to the first pressure chamber and to be slidable to allow the valve to be thrusted in a second direction in which the area of opening is decreased under a pressure within the second pressure chamber. An internal passage is formed inside of the spool and is adapted to supply a discharge pressure fluid of the hydraulic pump to the second pressure chamber when the spool has been slid to assume not less than a predetermined displacement made in the first direction.

Abstract translation: PCT No.PCT / JP95 / 01377 Sec。 371日期1996年12月20日第 102（e）日期1996年12月20日PCT提交1995年7月11日PCT公布。 出版物WO96 / 01951 日期1996年1月25日压力补偿阀包括止回阀部分，其具有连接到液压泵的排出路径的入口端口，连接到方向控制阀的入口侧的出口端口和用于 控制两个端口之间的打开区域。 减压阀部分具有在其两侧分别限定第一压力室和第二压力室的阀芯，并且其适于可滑动以允许阀沿第一方向被推出，其中开口面积为 在施加到第一压力室的自负载压力下增加，并且可滑动以允许阀在第二压力室内的压力下沿开口面积减小的第二方向被推出。 在阀芯内部形成内部通道，并且当阀芯已经滑动到不小于沿第一方向制成的预定位移时，将液压泵的排出压力流体提供给第二压力室。

公开(公告)号：US5372060A

公开(公告)日：1994-12-13

申请号：US44205

申请日：1993-04-08

Applicant: Jun Maruyama ,  Koji Yamashita ,  Naoki Ishizaki

Inventor： Jun Maruyama ,  Koji Yamashita ,  Naoki Ishizaki

IPC: F16K11/07 ,  F15B13/02 ,  F16K27/04 ,  F15B13/043

CPC classification number: F15B13/02 ,  Y10T137/87201 ,  Y10T137/87209

Abstract: A hydraulic valve assembly comprises a valve body defining first and second valve receptacle bores, a fluid pump, a first fluid passage communicated with the fluid pump, a second fluid passage communicated with a hydraulic load, and a third fluid passage communicated with a fluid reservoir. A first valve sub-assembly including a sleeve enclosing a first valve mechanism therein is disposed within the first valve receptacle body for selectively permitting and blocking introduction of the pressurized working fluid. Also, a second valve sub-assembly including a sleeve enclosing a second valve mechanism therein is disposed within the second valve receptacle bore for selectively establishing and blocking fluid communication between the second and third fluid passage means. A third valve assembly is provided in the valve body for selectively establishing and blocking fluid communication between the load side of the first valve sub-assembly and the second fluid passage for supplying the pressurized working fluid to the hydraulic load. A control valve assembly is provided in the valve body for generating a control pressure for controlling position of the first and second valve subassemblies.

Abstract translation: 液压阀组件包括限定第一和第二阀容纳孔的阀体，流体泵，与流体泵连通的第一流体通道，与液压负载连通的第二流体通道，以及与流体储存器连通的第三流体通道 。 包括其中包围第一阀机构的套筒的第一阀子组件设置在第一阀座体内，用于选择性地允许和阻止加压工作流体的引入。 此外，包括在其中封闭第二阀机构的套筒的第二阀子组件设置在第二阀容纳孔内，用于选择性地建立和阻止第二和第三流体通道装置之间的流体连通。 第三阀组件设置在阀体中，用于选择性地建立和阻断第一阀子组件的负载侧和第二流体通道之间的流体连通，以将加压工作流体供应到液压负载。 控制阀组件设置在阀体中，用于产生用于控制第一和第二阀组件的位置的控制压力。

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。

公开(公告)号：US5136930A

公开(公告)日：1992-08-11

申请号：US474042

申请日：1990-06-20

Applicant: Tadao Karakama ,  Hiroshi Endo ,  Sadao Nunotani ,  Naoki Ishizaki ,  Toshiro Takano

Inventor： Tadao Karakama ,  Hiroshi Endo ,  Sadao Nunotani ,  Naoki Ishizaki ,  Toshiro Takano

IPC: E02F9/22 ,  F15B13/01 ,  F15B20/00 ,  F16L55/10 ,  F15B11/08

CPC classification number: F15B13/015 ,  E02F9/226 ,  F16L55/1022 ,  Y10T137/87201 ,  Y10T137/87209

Abstract: An apparatus for supplying a pressure oil to a plurality of hydraulic cylinders of a working machine such as power shovels provided with working equipment such as shovels, wherein the cylinders are contracted at the same speed to move down or lower the working equipments at the same speed, so that the working equipment are prevented from suddenly dropping off in operation even if pressure oil passages (a, b) supplying the pressure oil to the cylinders are damaged during operation. The apparatus comprises: a lock valve assembly (B) provided with a valve housing (70) mounted on a cylinder tube of each of the hydraulic cylinders, in which valve housing (70) a check valve (77), a poppet valve (78) and a pilot valve (79) are mounted; and a directional control valve assembly (C) for selectively supplying the pressure oil to a lifting-movement pressure chamber (9a) and a lowering-movement pressure chamber (9b) of each of the hydraulic cylinders through the pressure oil passages (a, b), respectively.

公开(公告)号：US20090290996A1

公开(公告)日：2009-11-26

申请号：US12085178

申请日：2006-11-01

Applicant: Naoki Ishizaki

Inventor： Naoki Ishizaki

IPC: F04B1/24 ,  F03C1/253

CPC classification number: F04B1/2042 ,  F04B1/328

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US06561751B1

公开(公告)日：2003-05-13

申请号：US09666138

申请日：2000-09-20

Applicant: Naoki Ishizaki ,  Shuuji Hori ,  Shinobu Nagura

Inventor： Naoki Ishizaki ,  Shuuji Hori ,  Shinobu Nagura

IPC: B66F900

CPC classification number: 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

Abstract: 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.

Abstract translation: 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 。