公开(公告)号：US09194381B2

公开(公告)日：2015-11-24

申请号：US13699900

申请日：2012-06-08

申请人： Takuya Miyata ,  Seita Hayashi

发明人： Takuya Miyata ,  Seita Hayashi

IPC分类号： F04B1/24 ,  F04B1/20

CPC分类号： F04B1/2007 ,  F04B1/2042 ,  F04B1/24

摘要： A center shaft of a bent axis type axial piston pump/motor includes an outer race, which is attached to a shaft attachment hole of a cylinder block, has a shaft portion accommodation hole at one end and has a spring accommodation hole at the other end, and an inner shaft, which includes a shaft supporting spherical head portion having a large outer shape dimension at a distal end of a shaft base portion and attached to the shaft portion accommodation hole of the outer race through the shaft base portion.

摘要翻译： 弯轴式轴向柱塞泵/马达的中心轴包括附接到气缸体的轴安装孔的外座圈，在一端具有轴部容纳孔，另一端具有弹簧容纳孔 以及内轴，其包括在轴基部的远端具有大的外形尺寸的轴支撑球形头部的轴，并且通过轴基部附接到外圈的轴部容纳孔。

公开(公告)号：US5930997A

公开(公告)日：1999-08-03

申请号：US913717

申请日：1997-12-03

申请人： Seita Hayashi ,  Sadao Nunotani ,  Tosiyuki Akasaka

发明人： Seita Hayashi ,  Sadao Nunotani ,  Tosiyuki Akasaka

IPC分类号： E02F9/22 ,  E02F9/12 ,  F15B11/00 ,  F15B11/044 ,  F15B11/05 ,  F15B11/08 ,  F15B13/04 ,  F16D31/02

CPC分类号： E02F9/128 ,  E02F9/123 ,  E02F9/2285 ,  F15B11/0445 ,  F15B11/05 ,  F15B13/0402 ,  F15B2211/30505 ,  F15B2211/40515 ,  F15B2211/46 ,  F15B2211/50518 ,  F15B2211/5153 ,  F15B2211/67 ,  F15B2211/7058

摘要： A hydraulic motor driving apparatus includes a directional control valve for supplying discharge pressure fluid from a hydraulic pump into a first or second port of a hydraulic motor and returning the hydraulic fluid from the second or first port into a tank, and a pilot pressure applying valve for controlling the directional control valve. The directional control valve is urged to its neutral position by springs, to its first position by hydraulic pressure against its first pressure receiving portion and to its second position by hydraulic pressure against its second pressure receiving portion. Discharge pressure fluid from the hydraulic pump is supplied via a check valve into the first and second ports of the hydraulic motor when the directional control valve is at the neutral position. The discharge pressure fluid is supplied into the first port of the hydraulic motor and a hydraulic pressure fluid of the second port flows into the tank, when the directional control valve is at the first position. The discharge pressure fluid is supplied into the second port of the hydraulic motor and hydraulic pressure fluid of the first port flows into the tank, when the directional control valve is at the second position. The pilot pressure applying valve is urged to its neutral position by springs and switched to its first or second position by a first or second drive unit, to apply pilot pressure to the first or second pressure receiving portion of the directional control valve.

摘要翻译： PCT No.PCT / JP96 / 00764 Sec。 371日期1997年12月3日第 102（e）日期1997年12月3日PCT 1996年3月22日PCT公布。 WO96 / 30651 PCT出版物 日期1996年10月3日液压马达驱动装置包括用于将来自液压泵的排出压力流体供给到液压马达的第一或第二端口并将液压流体从第二或第一端口返回到罐中的方向控制阀，以及 用于控制方向控制阀的先导压力施加阀。 方向控制阀通过弹簧被推到其中间位置，通过相对于其第一压力接收部分的液压被压到其第一位置，并且通过相对于其第二压力接收部分的液压被压向其第二位置。 当方向控制阀处于中立位置时，来自液压泵的排出压力流体通过止回阀供应到液压马达的第一和第二端口中。 当方向控制阀处于第一位置时，排出压力流体被供应到液压马达的第一端口中，并且第二端口的液压流体流入箱体。 当方向控制阀处于第二位置时，排出压力流体被供应到液压马达的第二端口中，并且第一端口的液压流体流入罐中。 先导压力施加阀通过弹簧被推到其中立位置，并通过第一或第二驱动单元转换到其第一或第二位置，以将先导压力施加到方向控制阀的第一或第二受压部分。

公开(公告)号：US06209675B1

公开(公告)日：2001-04-03

申请号：US09228570

申请日：1999-01-11

申请人： Seita Hayashi ,  Hideki Kado ,  Sadao Nunotani

发明人： Seita Hayashi ,  Hideki Kado ,  Sadao Nunotani

IPC分类号： B60K1710

CPC分类号： F16H61/42 ,  F16H59/22 ,  F16H61/4017 ,  F16H61/4061 ,  F16H61/4148 ,  F16H2059/366

摘要： A travel drive apparatus for a hydraulic drive work vehicle and control method therefor, the apparatus including: a travel hydraulic pump driven by the power of an engine; a hydraulic motor that receives discharged oil from the travel hydraulic pump and causes the vehicle to travel; a travel changeover valve that receives the discharged oil from the travel hydraulic pump, supplies the discharged oil to the hydraulic motor and discharges return oil from the hydraulic motor to a tank, in which the travel drive apparatus comprises; an accelerator for controlling an engine rotational speed; an operation unit for selecting vehicle forward travel, stop, and reverse travel; the travel changeover valve being adapted for receiving signals from the operation unit, switching the discharge oil supplied from the travel hydraulic pump to the hydraulic motor, and controlling vehicle forward travel, stop and reverse travel; a relief valve that regulates pressure for controlling the hydraulic motor when the vehicle has decelerated, positioned between the travel changeover valve and the hydraulic motor; and a pressurizing unit for raising the set pressure at the relief valve controlling the hydraulic motor when the engine rotational speed is increased, while switching the vehicle from forward travel to reverse travel, or from reverse travel to forward travel, so that the work vehicle may switch over from forward to reverse travel; or vice versa, while exhibiting good acceleration performance.

摘要翻译： 一种用于液压驱动作业车辆的行驶驱动装置及其控制方法，该装置包括：由发动机的动力驱动的行驶液压泵; 液压马达，其从所述行驶液压泵接收排出的油，并使所述车辆行驶; 从行驶液压泵接收排出的油的行驶切换阀，将排出的油供给到液压马达，并将返回油从液压马达排出到行驶驱动装置所具备的油箱; 用于控制发动机转速的加速器; 用于选择车辆前进行驶，停止和反向行驶的操作单元; 所述行驶切换阀适于从所述操作单元接收信号，将从所述行驶液压泵供给的排出油切换到所述液压马达，并且控制车辆前进行驶，停止和反向行驶; 安全阀，其在车辆减速时调节用于控制液压马达的压力，位于行程切换阀和液压马达之间; 以及加压单元，用于当发动机转速增加时提高控制液压马达的安全阀的设定压力，同时将车辆从前进行驶切换到反向行驶，或者从倒车行驶到前进行驶，使得作业车辆 从前进到倒车行驶切换; 反之亦然，同时表现出良好的加速性能。

公开(公告)号：US06068013A

公开(公告)日：2000-05-30

申请号：US817414

申请日：1997-04-16

申请人： Mitsuru Arai ,  Seita Hayashi ,  Sadao Nunotani ,  Hideki Kado

发明人： Mitsuru Arai ,  Seita Hayashi ,  Sadao Nunotani ,  Hideki Kado

IPC分类号： E02F9/22 ,  F15B11/00 ,  F15B11/044 ,  F15B13/02 ,  F15B13/04 ,  F16K17/04

CPC分类号： E02F9/2267 ,  E02F9/2271 ,  F15B11/00 ,  F15B11/044 ,  F15B11/0445 ,  F15B13/021 ,  F15B13/0402 ,  F15B2211/30505 ,  F15B2211/30525 ,  F15B2211/50581 ,  F15B2211/853 ,  Y10T137/2554 ,  Y10T137/2562

摘要： In a counter balance valve, a valve body is provided with a valve bore having first and second pump-side ports, first and second motor-side ports and an auxiliary port. A spool is slidably fitted in the valve bore in a longitudinal direction thereof to establish and block communication between the respective ports. Left and right springs maintain the spool at a neutral position in which the respective ports are closed. A left pressure receiving chamber shifts the spool by a pressure oil supplied therein to a first travelling position at which the first pump-side port and the auxiliary port are communicated with each other and the second pump-side port and the second motor-side port are also communicated with each other. A right pressure receiving chamber shifts the spool by a pressure oil supplied therein to a second travelling position at which the second pump-side port and the auxiliary port are communicated with each other and the first pump-side port and the first motor-side port are communicated with each other. The spool is formed with a first axial bore communicated with the left pressure receiving chamber, a second axial bore communicated with the right pressure receiving chamber, first and second small diameter bores communicating the first and second axial bores with the first and second pump-side ports, respectively, and first and second large diameter bores communicating the first and second axial bores with an outer peripheral surface of the spool.

摘要翻译： PCT No.PCT / JP95 / 02135 Sec。 371日期1997年04月16日 102（e）日期1997年4月16日PCT提交1995年10月18日PCT公布。 出版物WO96 / 日期1996年4月25日在平衡阀中，阀体设置有具有第一和第二泵侧端口，第一和第二电动机侧端口和辅助端口的阀孔。 阀芯沿其纵向方向可滑动地装配在阀孔中，以建立和阻止各个端口之间的连通。 左右弹簧将阀芯保持在相应端口关闭的中间位置。 左压力容纳室通过其中供应的压力油将阀芯移动到第一行进位置，第一泵侧端口和辅助端口彼此连通，第二泵侧端口和第二电动机侧端口 也互相沟通。 右压力接收室通过其中供应的压力油将阀芯移动到第二泵侧端口和辅助端口彼此连通的第二行进位置以及第一泵侧端口和第一电动机侧端口 相互通信。 阀芯形成有与左压力接收室连通的第一轴向孔，与右压力接收室连通的第二轴向孔，使第一和第二轴向孔与第一和第二泵侧连通的第一和第二小直径孔 端口，以及第一和第二大直径孔，其将第一和第二轴向孔与管芯的外周表面连通。

公开(公告)号：US5983942A

公开(公告)日：1999-11-16

申请号：US149391

申请日：1998-09-08

申请人： Masayoshi Mototani ,  Seita Hayashi ,  Jun Maruyama

发明人： Masayoshi Mototani ,  Seita Hayashi ,  Jun Maruyama

IPC分类号： F15B13/042 ,  F16K31/44 ,  F16K31/48 ,  F15B13/02

CPC分类号： F15B13/042 ,  F15B13/0422 ,  F16K31/44 ,  Y10T137/87064 ,  Y10T137/87233

摘要： A damper for a hydraulic pilot valve having a valve body in which a plurality of pressure reducing valves, a rotational shaft, an operation member attached to the rotational shaft and a handling member rotating the rotational shaft are provided. The pressure reducing valves are operated through the operation member by rotating the rotational shaft by the handling member, and the damper is disposed in the valve body and is adapted to apply an operational resistance to the operation member due to a viscous resistance of a fluid having high viscosity.

摘要翻译： 一种用于液压先导阀的阻尼器，其具有阀体，在该阀体中设置有多个减压阀，旋转轴，安装在旋转轴上的操作构件和旋转旋转轴的操作构件。 所述减压阀通过所述操作构件旋转所述旋转轴而通过所述操作构件操作，并且所述阻尼器设置在所述阀体中，并且适于对所述操作构件施加操作阻力，这是由于具有 高粘度。

公开(公告)号：US5946910A

公开(公告)日：1999-09-07

申请号：US952267

申请日：1997-11-14

申请人： Seita Hayashi ,  Sadao Nunotani

发明人： Seita Hayashi ,  Sadao Nunotani

IPC分类号： E02F9/22 ,  F16D31/02

CPC分类号： E02F9/2225

摘要： The present invention relates to a hydraulic circuit for a hydraulically driven working vehicle which allows the vehicle to travel at an almost constant speed during high-speed traveling, provides a great digging force during working, does not need a charging pressure for preventing cavitation, loses a small amount of energy, and has a simple structure. To this end, the hydraulic circuit has a hydraulic travel pump (2) and a working machine hydraulic pump (4) which are driven by the power of an engine (1) for discharging pressurized oil to a HST travel circuit and a working machine-driving hydraulic circuit, respectively, wherein pressurized oil from the working machine hydraulic pump (4) joins pressurized oil from the hydraulic travel pump (2) to effect high-speed traveling, while pressurized oil from the hydraulic travel pump (2) joins pressurized oil in the working machine hydraulic pump (4) to generate a large digging force to effect digging.

摘要翻译： PCT No.PCT / JP96 / 01282 Sec。 371日期：1997年11月14日 102（e）1997年11月14日日期PCT提交1996年5月15日PCT公布。 公开号WO96 / 36776 日期：1996年11月21日本发明涉及一种用于液压驱动作业车辆的液压回路，其允许车辆在高速行驶期间以几乎恒定的速度行驶，在加工期间提供了很大的挖掘力，不需要充气压力 用于防止空化，失去少量能量，结构简单。 为此，液压回路具有由用于将加压油排放到HST行驶回路的发动机（1）的动力驱动的液压行程泵（2）和作业机械液压泵（4） 驱动液压回路，其中来自工作机械液压泵（4）的加压油从液压行程泵（2）接合加压油以实现高速行驶，而来自液压行程泵（2）的压力油连接加压油 在工作机械液压泵（4）中产生大的挖掘力来挖掘。

公开(公告)号：US5884984A

公开(公告)日：1999-03-23

申请号：US849595

申请日：1997-05-28

申请人： Mitsuru Arai ,  Seita Hayashi ,  Hideki Kado ,  Sadao Nunotani ,  Mitsuru Oshiro

发明人： Mitsuru Arai ,  Seita Hayashi ,  Hideki Kado ,  Sadao Nunotani ,  Mitsuru Oshiro

IPC分类号： E02F9/22 ,  E02F9/12 ,  F15B11/00 ,  F15B11/02

CPC分类号： F16H61/4148 ,  E02F9/123 ,  E02F9/128 ,  F15B11/02 ,  F16H61/4157 ,  F16H61/423 ,  F16H61/4061

摘要： There is provided a hydraulic braking apparatus, characterized in that it comprises: a first safety valve for draining a high pressure fluid at the side of a second port of a hydraulic motor into the side of a first port thereof; a second safety valve for draining a high pressure fluid at the side of the said first port of the said hydraulic motor into the side of the said second port thereof; and a braking valve adapted to be switched from a neutral position to a first position or a second position under a difference in pressure between the said first port and the said second port, the inlet side of each of the said first safety valve and the said second safety valve having a communication via the said braking valve with the side of each of the said first port and the said second port, and having an increased area of such communication when the said braking valve is set in the said neutral position and a reduced area of such communication when the braking valve is switched to the said first position or to the said second position.

摘要翻译： PCT No.PCT / JP95 / 02557 Sec。 371日期1997年5月28日 102（e）日期1997年5月28日PCT提交1995年12月13日PCT公布。 第WO96 / 18824号公报 日本1996年6月20日提供了一种液压制动装置，其特征在于，包括：第一安全阀，用于将液压马达的第二端口侧的高压流体排出到其第一端口侧; 第二安全阀，用于将所述液压马达的所述第一端口侧的高压流体排放到所述第二端口的侧面; 以及适于在所述第一端口和所述第二端口之间的压力差处于中间位置切换到第一位置或第二位置的制动阀，所述第一安全阀和所述第二端口中的每一个的入口侧 所述第二安全阀具有经由所述制动阀与所述第一端口和所述第二端口中的每一个的侧面的连通，并且当所述制动阀设置在所述中立位置时具有增加的所述连通的面积，并且减小 当制动阀切换到所述第一位置或所述第二位置时这种通信的区域。

公开(公告)号：US5558127A

公开(公告)日：1996-09-24

申请号：US416699

申请日：1995-04-10

申请人： Jun Maruyama ,  Seita Hayashi ,  Suji Hori ,  Tadao Karakama

发明人： Jun Maruyama ,  Seita Hayashi ,  Suji Hori ,  Tadao Karakama

IPC分类号： E02F9/22 ,  F15B13/042 ,  F15B13/14 ,  F15B13/08

CPC分类号： F15B13/0422 ,  E02F9/2267 ,  E02F9/2271 ,  E02F9/2285 ,  F15B13/14 ,  Y10T137/87064 ,  Y10T137/87233

摘要： A hydraulic pilot valve consisting of a pair of pressure-reducing valves, wherein a stopper which can freely adjust maximum control inputs of operating levers (23, 24) of the hydraulic pilot valve is provided to make maximum pilot pressures output from the pair of pressure-reducing valves freely adjustable. Furthermore, in the hydraulic pilot valve, a stopper member for limiting a maximum control input of an operating lever is fixed to the operating levers (23, 24), so that an operating force during a maximum operation of an operating lever is received by the stopper member. Furthermore, in the hydraulic pilot valve, an erroneous operation due to vibrations and the like is prevented by a damper mechanism (50) interposed between a lever fixed to each of the operating levers (23, 24) and a main body (1) of the valve. Furthermore, a shuttle valve interposed between the output ports of the pressure-reducing valves can simplify the construction of the hydraulic pilot valve for taking out a maximum pilot pressure out of the pilot pressures of the output ports.

摘要翻译： PCT No.PCT / JP92 / 01318 Sec。 371日期：1995年4月10日 102（e）日期1995年4月10日PCT提交1992年10月9日PCT公布。 出版物WO94 / 09278 日期1994年04月28日一种由一对减压阀构成的液压先导阀，其特征在于，能够自由地调节所述液压先导阀的操作杆（23,24）的最大控制输入的制动器，以产生最大的先导压力输出 从一对减压阀自由调节。 此外，在液压先导阀中，用于限制操作杆的最大控制输入的止动构件被固定到操作杆（23,24），使得操作杆的最大操作期间的操作力被 止动件。 此外，在液压先导阀中，通过夹在固定到每个操作杆（23,24）的杆和主体（1）之间的阻尼机构（50）来防止由振动等引起的错误操作 阀门。 此外，夹在减压阀的输出端口之间的梭阀可以简化用于从输出端口的先导压力中取出最大先导压力的液压先​​导阀的结构。

公开(公告)号：US5845680A

公开(公告)日：1998-12-08

申请号：US962917

申请日：1997-10-27

申请人： Masayoshi Mototani ,  Seita Hayashi ,  Jun Maruyama

发明人： Masayoshi Mototani ,  Seita Hayashi ,  Jun Maruyama

IPC分类号： F15B13/042 ,  F16K31/44 ,  F16K31/48 ,  F15B13/02

CPC分类号： F15B13/042 ,  F15B13/0422 ,  F16K31/44 ,  Y10T137/87064 ,  Y10T137/87233

摘要： A damper for a hydraulic pilot valve having a valve body in which a plurality of pressure reducing valves, a rotational shaft, an operation member attached to the rotational shaft and a handling member rotating the rotational shaft are provided. The pressure reducing valves are operated through the operation member, by rotating the rotational shaft by the handling member, and the damper is disposed in the valve body and is adapted to apply an operational resistance to the operation member due to a viscous resistance of a fluid having high viscosity.

摘要翻译： 一种用于液压先导阀的阻尼器，其具有阀体，在该阀体中设置有多个减压阀，旋转轴，安装在旋转轴上的操作构件和旋转旋转轴的操作构件。 减压阀通过操作构件操作，通过由处理构件旋转旋转轴，并且阻尼器设置在阀体中，并且由于流体的粘性阻力而适用于对操作构件施加操作阻力 具有高粘度。

公开(公告)号：US5826488A

公开(公告)日：1998-10-27

申请号：US817812

申请日：1997-04-14

申请人： Mitsuru Arai ,  Hideki Kado ,  Sadao Nunotani ,  Koichi Morita ,  Mitsuru Oshiro ,  Seita Hayashi

发明人： Mitsuru Arai ,  Hideki Kado ,  Sadao Nunotani ,  Koichi Morita ,  Mitsuru Oshiro ,  Seita Hayashi

IPC分类号： F04B1/20 ,  F01B3/00 ,  F04B1/22

CPC分类号： F04B1/2085 ,  Y10T74/18336

摘要： In a piston pump/motor of swash plate type which comprises: a cylinder block disposed in a casing to be rotatable jointly with a shaft therein; a plurality of pistons slidably inserted in the cylinder block parallel to the shaft; and a swash plate swingably attached to the casing for guiding the plurality of pistons on a front surface thereof and changing a displacement of each of the pistons by changing an inclination thereof, there is provided a swash plate angle changing apparatus in which the swash plate has a rear surface formed with a first contact surface and a second contact surface which make an angle between them. The casing has a swash plate support surface which is perpendicular to the shaft and with which the first contact surface and the second contact surface are each adapted to contact. The casing has a swash plate angle changing piston; the swash plate is swung by a force resultant from thrust forces of the pistons in the direction of the swash plate to a first position whereby the first contact surface makes contact with the swash plate support surface to yield a large angle of the said swash plate and also is swung by a thrust force of the swash plate angle changing piston to a position whereby the second contact surface makes contact with the swash plate support surface to yield a small angle of the swash plate; and the said swash plate has a center of swing located closer to the front surface than the rear surface of the swash plate.

摘要翻译： PCT No.PCT / JP95 / 02136 Sec。 371日期1997年04月14日 102（e）日期1997年4月14日PCT 1995年10月18日PCT PCT。 公开号WO96 / 12107 PCT 日期：1996年04月25日在旋转斜盘式活塞泵/电动机中，包括：气缸体，其设置在壳体内以与其中的轴一起旋转; 多个活塞，其与所述轴平行地可滑动地插入所述气缸体中; 以及可旋转地附接到壳体的斜盘，用于在其前表面上引导多个活塞，并且通过改变其倾斜来改变每个活塞的位移，设置有斜盘角度改变装置，其中斜盘具有 后表面形成有第一接触表面和在它们之间形成角度的第二接触表面。 壳体具有垂直于轴的斜盘支撑表面，第一接触表面和第二接触表面通过该表面适于接触。 外壳具有斜盘角度更换活塞; 旋转斜盘由从活塞的推力在旋转斜盘的方向上产生的力摆动到第一位置，由此第一接触表面与斜板支撑表面接触以产生所述斜盘的大角度，并且 还通过斜板角度变化活塞的推力摆动到第二接触表面与斜盘支撑表面接触以产生斜盘的小角度的位置; 并且所述斜盘具有比旋转斜盘的后表面更靠近前表面的摆动中心。