公开(公告)号：US07096989B2

公开(公告)日：2006-08-29

申请号：US11033543

申请日：2005-01-12

申请人： Ryota Ohashi ,  Hideaki Okada

发明人： Ryota Ohashi ,  Hideaki Okada

IPC分类号： B60K17/34

CPC分类号： B60K7/0015 ,  B60K17/043 ,  B60K17/105 ,  B60K17/356 ,  B60K2001/001 ,  B60K2007/0046 ,  B60K2007/0061 ,  B60L2220/46 ,  B60Y2200/223 ,  B62D11/183 ,  B62D12/00

摘要： An articulated vehicle with a working device has a first frame having a prime mover mounted thereon and supporting a first transaxle apparatus. The first transaxle apparatus includes an input shaft receiving power from the prime mover, a pair of first axles, and a hydrostatic transmission. The hydrostatic transmission comprises a variable hydraulic pump, a first hydraulic motor fluidly connected to the hydraulic pump via a fluid passage, and a housing with a port fluidly connected to the fluid passage. The second transaxle apparatus includes a pair of second axles having different lengths and a second hydraulic motor. The second hydraulic motor is fluidly connected to the port. Proximal ends of the first and second frames with respect to the vehicle are coupled to each other so that the first and second frames are rotatable around a vertical axis relative to each other when steered.

摘要翻译： 具有加工装置的关节式车辆具有安装在其上的原动机的第一框架，并且支撑第一变速驱动桥装置。 第一变速驱动装置包括从原动机接收动力的输入轴，一对第一轴和静液压传动。 静液压变速器包括可变液压泵，通过流体通道流体地连接到液压泵的第一液压马达和具有流体连接到流体通道的端口的壳体。 第二变速驱动装置包括具有不同长度的一对第二轴和第二液压马达。 第二液压马达流体地连接到端口。 相对于车辆的第一和第二框架的近端部彼此联接，使得当转向时，第一和第二框架可相对于彼此相对于垂直轴线旋转。

公开(公告)号：US07043908B2

公开(公告)日：2006-05-16

申请号：US10883729

申请日：2004-07-06

申请人： Koji Irikura ,  Ryota Ohashi ,  Hiroshi Tottori

发明人： Koji Irikura ,  Ryota Ohashi ,  Hiroshi Tottori

IPC分类号： F16D31/02

CPC分类号： F16D31/02

摘要： An integrated hydraulic transaxle (IHT) comprises a hydrostatic transmission (HST), an axle driven by the HST, and a housing incorporating the HST and the axle. The HST includes a variable displacement hydraulic pump driven by a prime mover, and a hydraulic motor fluidly connected to the hydraulic pump. The hydraulic pump has a trunnion type movable swash plate. The internal displacement of the hydraulic motor is larger than the internal displacement of the hydraulic pump so as to increase the hydraulic deceleration activity of the HST. In the IHT, a mechanical deceleration drive train is interposed between the hydraulic motor and the axle. The mechanical deceleration activity of the mechanical deceleration drive train is reduced so far as the increase of the hydraulic deceleration activity of the HST.

公开(公告)号：US06990808B2

公开(公告)日：2006-01-31

申请号：US10800638

申请日：2004-03-16

申请人： Robert Abend ,  Hideaki Okada ,  Ryota Ohashi

发明人： Robert Abend ,  Hideaki Okada ,  Ryota Ohashi

IPC分类号： F16D39/00

CPC分类号： F16H39/14 ,  B60B35/007 ,  B60B35/163 ,  B60B2310/305 ,  B60B2900/112 ,  B60B2900/321 ,  B60K17/105 ,  F16H39/08 ,  F16H47/02 ,  Y10T74/2186

摘要： An axle driving system which houses in a housing thereof a hydrostatic transmission, axles, and a driving gear train for connecting output means of the hydraulic transmission and axles, so as to transmit power from a driving source to the hydrostatic transmission and to change the speed, thereby driving the axles. A first chamber therein contains the hydrostatic transmission and a second chamber therein contains the driving gear train. Both the first and second chambers are independent of each other so as to prevent a foreign object, such as iron powder produced in the driving gear train, from entering the hydrostatic transmission. The system includes an L-like-shaped center section on which the hydrostatic transmission is offset such that an imaginary plane which includes a motor mounting surface passes in proximity to the axis of a pump shaft. The pump shaft is disposed perpendicular to the axles. The motor shaft is disposed in parallel thereto. A hydraulic pump is positioned between the hydraulic motor and the axles, so that the housing for the hydrostatic transmission, axles and driving gear train, is smaller in width to thereby make the system more compact.

公开(公告)号：US06983815B2

公开(公告)日：2006-01-10

申请号：US10847372

申请日：2004-05-18

申请人： Robert Abend ,  Norihiro Ishii ,  Ryota Ohashi

发明人： Robert Abend ,  Norihiro Ishii ,  Ryota Ohashi

IPC分类号： B60K17/00

CPC分类号： A01D34/6806 ,  A01D69/03 ,  A01D2101/00 ,  B60K17/105 ,  B60Y2200/223 ,  Y10S56/04 ,  Y10S56/06 ,  Y10T74/2186

摘要： An axle driving unit having a housing including at least two housing parts joined to each other through a joint surface, at least one of the housing parts including a recess formed in a wall thereof. The axle driving unit further includes a pair of hydraulic devices mounted perpendicular to each other on corresponding mounting surfaces of a center section. The center section further includes a portion extending outwardly parallel to the joint surface, the portion being fitted into the recess of the housing part.

摘要翻译： 一种车轴驱动单元，其具有壳体，所述壳体包括通过接合表面彼此连接的至少两个壳体部分，所述壳体部分中的至少一个包括形成在其壁中的凹部。 车轴驱动单元还包括在中心部分的相应安装表面上彼此垂直安装的一对液压装置。 中心部分还包括平行于接头表面向外延伸的部分，该部分装配到壳体部分的凹部中。

公开(公告)号：US06966181B2

公开(公告)日：2005-11-22

申请号：US10300022

申请日：2002-11-20

申请人： Manabu Kawakami ,  Ryota Ohashi

发明人： Manabu Kawakami ,  Ryota Ohashi

IPC分类号： B60K17/10 ,  F15B21/04 ,  F16D31/02 ,  F16H61/40 ,  F16H61/4131

CPC分类号： F15B21/042 ,  B60K17/105 ,  F16D31/02 ,  F16H61/4131 ,  F16H61/4183

摘要： A hydrostatic transmission, comprising a housing, an interior space of the housing serving as a fluid sump; a center section disposed in the housing so as to be submerged In the fluid sump; a hydraulic pump mounted on the center section in the housing: a hydraulic motor mounted on the center section in the housing, and a pair of first and second fluid passages formed within the center section so as to fluidly connect the hydraulic pump with the hydraulic motor. The second fluid passage has an upwardly slant opening toward the fluid sump. A draining device including a relief valve is provided in the opening of the second fluid passage. When hydraulic pressure in the second fluid passage is not more than a predetermined value but not less than that in the first fluid passage, the relief valve is opened so as to drain fluid from the second fluid passage to the fluid sump, thereby keeping the hydrostatic transmission in neutral. When hydraulic pressure in the second fluid passage is more than the predetermined value or less than that in the first fluid passage, the relief valve is closed so as to shut out fluid in the second fluid passage from the fluid sump. The draining device comprises a ball check valve which closes the relief valve by its dead weight when the hydraulic pressure in the second fluid passage is less than the first fluid passage.

摘要翻译： 一种静液传动装置，包括壳体，所述壳体的内部空间用作流体池; 设置在所述壳体中以便浸没在所述流体槽中的中心部; 安装在壳体的中心部分上的液压泵：安装在壳体中心部分上的液压马达，以及形成在中心部分内的一对第一和第二流体通道，以使液压泵与液压马达流体连接 。 第二流体通道具有朝向流体槽的向上倾斜的开口。 包括安全阀的排水装置设置在第二流体通道的开口中。 当第二流体通道中的液压压力不大于第一流体通道中的预定值但不小于第一流体通道中的压力时，安全阀打开以将流体从第二流体通道排出到流体池，从而保持静水压 传输中性。 当第二流体通道中的液压大于预定值或小于第一流体通道中的压力时，安全阀关闭，以便阻止第二流体通道中的流体从流体槽中流出。 排水装置包括球止回阀，当第二流体通道中的液压小于第一流体通道时，该止回阀通过其自重闭合安全阀。

公开(公告)号：US20050217919A1

公开(公告)日：2005-10-06

申请号：US11146233

申请日：2005-06-07

申请人： Hiedeaki Okada ,  Shusuke Nemoto ,  Ryota Ohashi

发明人： Hiedeaki Okada ,  Shusuke Nemoto ,  Ryota Ohashi

IPC分类号： B60K17/00 ,  B60K17/10 ,  F16H39/14

CPC分类号： F16H39/14 ,  B60K17/105

摘要： An axle driving apparatus wherein a hydraulic motor and a hydraulic pump for a hydro-static-transmission are housed in a transmission casing of the axle driving apparatus and a center section for connecting the hydraulic motor and hydraulic pump is disposed in the transmission casing, the center section being fixed at the butt joint portion at the transmission casing, and an oil passage from the hydraulic pump to the hydraulic motor at the center section is bent at a right angle so as to extend the motor shaft in parallel to the axles, so that the rotation direction of the motor shaft conventionally changed by bevel gears is changed by the oil passages in the center section.

公开(公告)号：US20050121246A1

公开(公告)日：2005-06-09

申请号：US11033543

申请日：2005-01-12

申请人： Ryota Ohashi ,  Hideaki Okada

发明人： Ryota Ohashi ,  Hideaki Okada

IPC分类号： B60K7/00 ,  B60K17/10 ,  B60K17/356 ,  B62D11/18 ,  B62D12/00 ,  F16D39/00

CPC分类号： B60K7/0015 ,  B60K17/043 ,  B60K17/105 ,  B60K17/356 ,  B60K2001/001 ,  B60K2007/0046 ,  B60K2007/0061 ,  B60L2220/46 ,  B60Y2200/223 ,  B62D11/183 ,  B62D12/00

摘要： An articulated vehicle with a working device has a first frame having a prime mover mounted thereon and supporting a first transaxle apparatus. The first transaxle apparatus includes an input shaft receiving power from the prime mover, a pair of first axles, and a hydrostatic transmission. The hydrostatic transmission comprises a variable hydraulic pump, a first hydraulic motor fluidly connected to the hydraulic pump via a fluid passage, and a housing with a port fluidly connected to the fluid passage. The second transaxle apparatus includes a pair of second axles having different lengths and a second hydraulic motor. The second hydraulic motor is fluidly connected to the port. Proximal ends of the first and second frames with respect to the vehicle are coupled to each other so that the first and second frames are rotatable around a vertical axis relative to each other when steered.

摘要翻译： 具有加工装置的关节式车辆具有安装在其上的原动机的第一框架，并且支撑第一变速驱动桥装置。 第一变速驱动装置包括从原动机接收动力的输入轴，一对第一轴和静液压传动。 静液压变速器包括可变液压泵，通过流体通道流体地连接到液压泵的第一液压马达和具有流体连接到流体通道的端口的壳体。 第二变速驱动装置包括具有不同长度的一对第二轴和第二液压马达。 第二液压马达流体地连接到端口。 相对于车辆的第一和第二框架的近端部彼此联接，使得当转向时，第一和第二框架可相对于彼此相对于垂直轴线旋转。

公开(公告)号：US06902017B2

公开(公告)日：2005-06-07

申请号：US10282038

申请日：2002-10-29

申请人： Ryota Ohashi

发明人： Ryota Ohashi

IPC分类号： A01D69/03 ,  B60K17/10 ,  B60K17/28 ,  B62D12/00 ,  F16D31/02

CPC分类号： B62D12/00 ,  A01D69/03 ,  B60K17/105 ,  B60Y2200/223

摘要： An articulate vehicle has first and second frames, which are coupled to each other at proximal ends thereof with respect to the vehicle through a coupling part so as to be relatively rotatable around a vertical axis according to steering operation. The first and second frames are distributed at front and rear portions of the vehicle. The first frame supports a first transaxle apparatus having first axles, and the second frame supports a second transaxle apparatus having a pair of second axles. A gearbox is disposed near the coupling part and provided with a pair of mutually drivingly connected horizontal shafts which are variable in relative angles thereof around the vertical axis according to steering operation. One of the horizontal shafts is drivingly connected to a power take-off shaft for extracting output power of a speed-changing arrangement in the first transaxle apparatus. The other of the horizontal shafts is drivingly connected to an input shaft of the second transaxle apparatus. The vehicle is provided with a rotor having a rotary axis disposed on the vertical axis so as to output power from a prime mover to a working device.

公开(公告)号：US06568498B2

公开(公告)日：2003-05-27

申请号：US10101071

申请日：2002-03-20

申请人： Robert Abend ,  Norihiro Ishii ,  Ryota Ohashi

发明人： Robert Abend ,  Norihiro Ishii ,  Ryota Ohashi

IPC分类号： A60K1716

CPC分类号： A01D34/6806 ,  A01D69/03 ,  A01D2101/00 ,  B60K17/105 ,  B60Y2200/223 ,  Y10S56/04 ,  Y10S56/06 ,  Y10T74/2186

摘要： An axle driving unit having a housing (21,22) for supporting a first axle (17) for mounting thereon a first driving wheel (3L), and a longer second axle (18) for mounting thereon a second driving wheel (3R). The axle driving unit is eccentrically mounted on a body frame (1) in proximity to the first driving wheel (3L). A speed change transmission (T) is disposed in an enlarged region of the housing that extends substantially perpendicularly with respect to the axles (17,18). The axle driving unit can thus be easily disposed to the side of a chute (6) of a rear-discharge type lawn tractor.

公开(公告)号：US06513325B2

公开(公告)日：2003-02-04

申请号：US09794019

申请日：2001-02-28

申请人： Hiroaki Shimizu ,  Ryota Ohashi ,  Masaru Iida

发明人： Hiroaki Shimizu ,  Ryota Ohashi ,  Masaru Iida

IPC分类号： F16D3102

CPC分类号： F16H61/4148 ,  B60K17/10 ,  B60K17/105 ,  F16H61/4131 ,  F16H61/42 ,  F16H61/437

摘要： A hydrostatic transmission including a hydraulic pump and a hydraulic motor fluidly connected with each other, being immersed in an oil sump formed in a housing. A pair of oil passages for fluidly connecting the hydraulic pump with the hydraulic motor are formed in a center section on which the hydraulic pump and the hydraulic motor are mounted. The center section is provided on an outer surface thereof with a pair of openings of the respective oil passages. A control arm is disposed in the housing so as to interlock with a pump capacity changing member like a movable swash plate, thereby enabling the pump capacity changing member to be moved to various actuation positions including a neutral position in association with rotation of the control arm rotated to various actuation positions including a neutral position. A contact member having a surface abutting against the pair of openings of the center section is formed integrally with the control arm. A pair of oil passages are provided in the contact member. The pair of oil passages in the contact member are shut from the oil sump and open on the surface of the contact member. The pair of oil passages in the contact member communicate with the respective openings of the center section when the control arm is located in a certain range including the neutral position. An orifice is provided in the contact member so as to connect the pair of oil passages in the contact member with each other.

摘要翻译： 包括液压泵和流体连接的液压马达的静液传动装置浸入形成在壳体中的油底壳中。 在液压泵和液压马达安装的中心部分上形成有用于将液压泵与液压马达流体连接的一对油路。 中心部分在其外表面上设置有相应油路的一对开口。 控制臂设置在壳体中，以便像可移动斜盘一样与泵容量改变构件互锁，从而使泵容量改变构件能够移动到包括与控制臂的旋转相关联的中立位置的各种致动位置 旋转到包括中立位置的各种致动位置。 具有与中心部分的一对开口抵接的表面的接触构件与控制臂一体形成。 一对油通道设置在接触构件中。 接触构件中的一对油通道从油底壳关闭并在接触构件的表面上打开。 当控制臂位于包括中立位置的一定范围内时，接触构件中的一对油路与中心部分的各个开口连通。 在接触构件中设置有孔，以将接触构件中的一对油路彼此连接。