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11. 发明授权

US07971435B2 Hyrdaulic transmission 有权
标题翻译： Hyrdaulic传输
公开(公告)号：US07971435B2
公开(公告)日：2011-07-05
申请号：US11735398
申请日：2007-04-13
申请人： Hironori Sumomozawa , Shigenori Sakikawa , Ryota Ohashi
发明人： Hironori Sumomozawa , Shigenori Sakikawa , Ryota Ohashi
IPC分类号： F16D31/02
CPC分类号： F16D31/02
摘要： A hydraulic transmission comprises a hydraulic pump and a hydraulic motor, which are mounted onto a center section to be fluidly connected to each other through a closed fluid circuit formed in the center section. A neutral valve is connected to the closed fluid circuit. The neutral valve is fitted into an outward opened end of a vertical slanted oil hole of the closed fluid circuit. Alternatively, the neutral valve is fitted into an outward opened end of a straight oil hole having an opposite outward opened end into which a charge check valve is fitted.
摘要翻译：液压变速器包括液压泵和液压马达，其通过形成在中心部分中的封闭流体回路安装在中心部分上以彼此流体连接。中性阀连接到封闭的流体回路。中性阀安装在封闭流体回路的垂直倾斜油孔的向外开口端。或者，中性阀装配到具有相对的向外开口端的直油孔的向外开口端中，安装充电止回阀。

12. 发明授权

US07316287B2 Hydraulic pump unit, hydraulic pump set, and working vehicle 有权
公开(公告)号：US07316287B2
公开(公告)日：2008-01-08
申请号：US11102708
申请日：2005-04-11
申请人： Ryota Ohashi , Manabu Kawakami , Shigenori Sakikawa , Takeaki Nozaki
发明人： Ryota Ohashi , Manabu Kawakami , Shigenori Sakikawa , Takeaki Nozaki
IPC分类号： B60K17/00 , B60K17/30 , B60K3/00 , B60K11/24 , B60K11/02
CPC分类号： F04B53/16 , F04B53/04
摘要： There is provided a working vehicle having first and second hydraulic pump units operatively driven by a driving source and arranged away to each other in a width direction of the vehicle. In the working vehicle, each of the first and second hydraulic pump units includes a pump body; a port block formed with an oil passage for supplying/discharging an operating fluid to/from said pump body; a pump case connected to the port block so as to define a pump body accommodating space for surrounding the pump body; and a pump shaft for rotatably driving the pump body, the pump shaft having an input end operatively connected to said driving source. A drain port for opening the pump body accommodating space outward and a charge suction port for drawing in an oil from an oil tank in order to supply a charge oil to a hydraulic circuit fluidly connecting with the corresponding hydraulic motor unit are provided respectively in first and second assemblies formed by the corresponding pump case and port block. The drain port is provided on a wall surface other than an opposing wall surface facing each other of the wall surfaces of said first and second assemblies when arranging the first and second assemblies so that the input ends of each pump shaft are directed in the same direction.

13. 发明授权

US5495712A Variable displacement type hydraulic system 失效
标题翻译：可变排量式液压系统
公开(公告)号：US5495712A
公开(公告)日：1996-03-05
申请号：US261995
申请日：1994-06-17
申请人： Kazuhiko Yano , Shigenori Sakikawa , Ryota Ohashi
发明人： Kazuhiko Yano , Shigenori Sakikawa , Ryota Ohashi
IPC分类号： F04B1/20 , B60K17/10 , F01B3/00 , F04B9/02 , F16D39/00
CPC分类号： F01B3/0032 , B60K17/105
摘要： A variable displacement type hydraulic system is contained in a housing. A guide is provided on an axis of slanting movement of a swash plate. The guide is fitted into an inner ring of a roller bearing. The roller bearing is fitted into a groove formed at an inner wall of the housing and a groove formed at a cylinder block mounting surface of a center section so as to be fixedly positioned in the housing. In accordance with the invention, sliding resistance of the swash plate is reduced to improve the ability of the swash plate to return to the neutral position.
摘要翻译：可变排量型液压系统包含在壳体中。在旋转斜盘的倾斜运动轴上提供导轨。导轨安装在滚子轴承的内圈中。滚子轴承装配在形成在壳体的内壁上的槽中，并且形成在中心部分的气缸体安装表面处的槽，以便固定地定位在壳体中。根据本发明，斜盘的滑动阻力减小，以提高斜盘回到中立位置的能力。

14. 发明申请

US20070204609A1 Hyrdaulic Transmission 有权
标题翻译： Hyrdaulic传输
公开(公告)号：US20070204609A1
公开(公告)日：2007-09-06
申请号：US11735398
申请日：2007-04-13
申请人： Hironori Sumomozawa , Shigenori Sakikawa , Ryota Ohashi
发明人： Hironori Sumomozawa , Shigenori Sakikawa , Ryota Ohashi
IPC分类号： F16D39/00
CPC分类号： F16D31/02
摘要： A hydraulic transmission comprises a hydraulic pump and a hydraulic motor, which are mounted onto a center section to be fluidly connected to each other through a closed fluid circuit formed in the center section. A neutral valve is connected to the closed fluid circuit. The neutral valve is fitted into an outward opened end of a vertical slanted oil hole of the closed fluid circuit. Alternatively, the neutral valve is fitted into an outward opened end of a straight oil hole having an opposite outward opened end into which a charge check valve is fitted.
摘要翻译：液压变速器包括液压泵和液压马达，其通过形成在中心部分中的封闭流体回路安装在中心部分上以彼此流体连接。中性阀连接到封闭的流体回路。中性阀安装在封闭流体回路的垂直倾斜油孔的向外开口端。或者，中性阀装配到具有相对的向外开口端的直油孔的向外开口端中，安装充电止回阀。

15. 发明申请

US20050226747A1 Hydraulic pump unit, hydraulic pump set, and working vehicle 有权
标题翻译：液压泵单元，液压泵组和作业车
公开(公告)号：US20050226747A1
公开(公告)日：2005-10-13
申请号：US11102708
申请日：2005-04-11
申请人： Ryota Ohashi , Manabu Kawakami , Shigenori Sakikawa , Takeaki Nozaki
发明人： Ryota Ohashi , Manabu Kawakami , Shigenori Sakikawa , Takeaki Nozaki
IPC分类号： B60K17/10 , F04B53/04 , F04B53/16 , F16H39/02 , F04B17/06 , F04B35/06
CPC分类号： F04B53/16 , F04B53/04
摘要： There is provided a working vehicle having first and second hydraulic pump units operatively driven by a driving source and arranged away to each other in a width direction of the vehicle. In the working vehicle, each of the first and second hydraulic pump units includes a pump body; a port block formed with an oil passage for supplying/discharging an operating fluid to/from said pump body; a pump case connected to the port block so as to define a pump body accommodating space for surrounding the pump body; and a pump shaft for rotatably driving the pump body, the pump shaft having an input end operatively connected to said driving source. A drain port for opening the pump body accommodating space outward and a charge suction port for drawing in an oil from an oil tank in order to supply a charge oil to a hydraulic circuit fluidly connecting with the corresponding hydraulic motor unit are provided respectively in first and second assemblies formed by the corresponding pump case and port block. The drain port is provided on a wall surface other than an opposing wall surface facing each other of the wall surfaces of said first and second assemblies when arranging the first and second assemblies so that the input ends of each pump shaft are directed in the same direction.
摘要翻译：提供了一种工作车辆，其具有由驱动源可操作地驱动并且在车辆的宽度方向上彼此远离布置的第一和第二液压泵单元。在工作车辆中，第一和第二液压泵单元中的每一个包括泵体; 形成有用于向/从所述泵体供给/排出工作流体的油路的端口块; 连接到所述端口块的泵壳，以便限定用于围绕所述泵体的泵体容纳空间; 以及用于可旋转地驱动所述泵体的泵轴，所述泵轴具有可操作地连接到所述驱动源的输入端。分别在第一和第二位置分别设置用于将泵主体容纳空间向外打开的排出口和用于从油箱吸入油的供给吸入口，以便向与液压马达单元流体连接的液压回路供油装置由相应的泵壳和端口块形成的第二组件。当布置第一和第二组件时，排水口设置在不同于所述第一和第二组件的壁表面彼此面对的相对壁表面的壁表面上，使得每个泵轴的输入端指向相同的方向。

16. 发明授权

US5850736A Hydrostatic Transmission 失效
标题翻译：静液压传动
公开(公告)号：US5850736A
公开(公告)日：1998-12-22
申请号：US730657
申请日：1996-10-11
申请人： Shinya Sakakura , Ryota Ohashi , Shigenori Sakikawa
发明人： Shinya Sakakura , Ryota Ohashi , Shigenori Sakikawa
IPC分类号： F16H39/06 , F16H61/40 , F16H61/4017 , F16H61/4026 , F16H61/4043 , F16H61/4139 , F16D31/02 , F16D39/00
CPC分类号： F16H39/06 , F16H61/40 , F16H61/4017 , F16H61/4139 , F16H61/4043
摘要： A hydrostatic transmission constructed so that a check valve and a relief valve are made as compact as possible to supply oil to a closed circuit for connecting a hydraulic pump and a hydraulic motor, and to regulate maximum pressure in the closed circuit. A check valve and a relief valve are contained in a valve casing. A valve body of the relief valve is disposed opposite to a valve body of the check valve. A relief spring of the relief valve is retained by a cover detachably mounted to an open end of the valve casing, thereby facilitating pressure setting of the relief valve. The valve body of the relief valve is contained in a relief valve casing slidably disposed in the valve casing. A plunger, capable of urging the check valve in the opening direction via the relief valve casing, is provided in the cover, thereby enabling the check valve to be manually opened.
摘要翻译：构造成使得止回阀和安全阀尽可能紧凑的静液压传动装置将油供给到用于连接液压泵和液压马达的闭路，并且调节闭路中的最大压力。止回阀和安全阀包含在阀壳体中。安全阀的阀体与止回阀的阀体相对设置。安全阀的释放弹簧由可拆卸地安装到阀壳的开口端的盖保持，从而有利于安全阀的压力设定。安全阀的阀体容纳在可滑动地设置在阀壳体中的安全阀壳体中。能够通过安全阀壳体向止回阀向打开方向推压的柱塞设置在盖体内，能够手动打开止回阀。

17. 发明授权

US07934578B2 Hydraulic pump unit, hydraulic pump set, and working vehicle 失效
标题翻译：液压泵单元，液压泵组和作业车
公开(公告)号：US07934578B2
公开(公告)日：2011-05-03
申请号：US12748805
申请日：2010-03-29
申请人： Ryota Ohashi , Manabu Kawakami , Shigenori Sakikawa , Takeaki Nozaki
发明人： Ryota Ohashi , Manabu Kawakami , Shigenori Sakikawa , Takeaki Nozaki
IPC分类号： B60K17/00 , B62D11/00
CPC分类号： F04B53/16 , F04B53/04
摘要： There is provided a working vehicle having first and second hydraulic pump units operatively driven by a driving source and arranged away to each other in a width direction of the vehicle. In the working vehicle, each of the first and second hydraulic pump units includes a pump body; a port block formed with an oil passage for supplying/discharging an operating fluid to/from said pump body; a pump case connected to the port block so as to define a pump body accommodating space for surrounding the pump body; and a pump shaft for rotatably driving the pump body, the pump shaft having an input end operatively connected to said driving source. A drain port for opening the pump body accommodating space outward and a charge suction port for drawing in an oil from an oil tank in order to supply a charge oil to a hydraulic circuit fluidly connecting with the corresponding hydraulic motor unit are provided respectively in first and second assemblies formed by the corresponding pump case and port block. The drain port is provided on a wall surface other than an opposing wall surface facing each other of the wall surfaces of said first and second assemblies when arranging the first and second assemblies so that the input ends of each pump shaft are directed in the same direction.
摘要翻译：提供了一种工作车辆，其具有由驱动源可操作地驱动并且在车辆的宽度方向上彼此远离布置的第一和第二液压泵单元。在工作车辆中，第一和第二液压泵单元中的每一个包括泵体; 形成有用于向/从所述泵体供给/排出工作流体的油路的端口块; 连接到所述端口块的泵壳，以便限定用于围绕所述泵体的泵体容纳空间; 以及用于可旋转地驱动所述泵体的泵轴，所述泵轴具有可操作地连接到所述驱动源的输入端。分别在第一和第二位置分别设置用于将泵主体容纳空间向外打开的排出口和用于从油箱吸入油的供给吸入口，以便向与液压马达单元流体连接的液压回路供油装置由相应的泵壳和端口块形成的第二组件。当布置第一和第二组件时，排水口设置在不同于所述第一和第二组件的壁表面彼此面对的相对壁表面的壁表面上，使得每个泵轴的输入端指向相同的方向。

18. 发明授权

US07331177B2 Hydrostatic transmission 有权
标题翻译：静液压传动
公开(公告)号：US07331177B2
公开(公告)日：2008-02-19
申请号：US11392871
申请日：2006-03-30
申请人： Shigenori Sakikawa , Ryota Ohashi
发明人： Shigenori Sakikawa , Ryota Ohashi
IPC分类号： F16D31/02
CPC分类号： F15B7/005 , F15B7/008 , F15B21/042 , F16H61/4017 , F16H61/4035 , F16H61/4131
摘要： A hydrostatic transaxle comprises: a housing, an interior space of the housing serving as a fluid sump; an axle supported by the housing; a hydrostatic transmission disposed in the housing so as to drive the axle, the hydrostatic transmission including a hydraulic pump disposed in the housing, a hydraulic motor disposed in the housing, and a center section disposed in the housing, wherein the hydraulic pump and the hydraulic motor are mounted onto the center section, and wherein the center section is formed therein with a fluid circuit for circulation of fluid between the hydraulic pump and the hydraulic motor, and formed with an outwardly opened hole connected to the fluid circuit; a valve holding member fitted into the hole; and a relief valve connected to the fluid circuit through valve holding member. The relief valve is provided with a fixed flow restricting means for passing a specific amount of fluid from a higher-pressurized portion of the fluid circuit to a lower-pressurized portion of the fluid circuit. The relief valve allows fluid after passing through the fixed flow restricting means to flow to the lower-pressurized portion of the fluid circuit when a differential pressure between a primary pressure of fluid before passing through the fixed flow restricting means and a secondary pressure of fluid after passing through the fixed flow restricting means is zero or within a predetermined range.
摘要翻译：静液压驱动桥包括：壳体，所述壳体的内部空间用作流体槽; 由壳体支撑的轴; 设置在所述壳体中以驱动所述轴的静液传动装置，所述静液传动装置包括设置在所述壳体中的液压泵，设置在所述壳体中的液压马达和设置在所述壳体中的中心部分，其中所述液压泵和所述液压电动机安装在中心部分上，其中中心部分形成有用于在液压泵和液压马达之间循环流体的流体回路，并且形成有连接到流体回路的向外开口的孔; 安装在孔中的阀保持构件; 以及通过阀保持构件连接到流体回路的安全阀。安全阀设置有用于将特定量的流体从流体回路的较高加压部分传递到流体回路的较低加压部分的固定流量限制装置。安全阀允许当通过固定流量限制装置的流体的初级压力与经过固定流量限制装置的流体的次级压力之间的压力在经过固定流动限制装置之后的流体流到流体回路的较低加压部分通过固定流量限制装置是零或在预定范围内。

19. 发明授权

US07708104B2 Hydraulic pump unit, hydraulic pump set, and working vehicle 有权
标题翻译：液压泵单元，液压泵组和作业车
公开(公告)号：US07708104B2
公开(公告)日：2010-05-04
申请号：US11925241
申请日：2007-10-26
申请人： Ryota Ohashi , Manabu Kawakami , Shigenori Sakikawa
发明人： Ryota Ohashi , Manabu Kawakami , Shigenori Sakikawa
IPC分类号： B60K17/00
CPC分类号： F04B53/16 , F04B53/04
摘要： There is provided a working vehicle having first and second hydraulic pump units operatively driven by a driving source and arranged away to each other in a width direction of the vehicle. In the working vehicle, each of the first and second hydraulic pump units includes a pump body; a port block formed with an oil passage for supplying/discharging an operating fluid to/from said pump body; a pump case connected to the port block so as to define a pump body accommodating space for surrounding the pump body; and a pump shaft for rotatably driving the pump body, the pump shaft having an input end operatively connected to said driving source. A drain port for opening the pump body accommodating space outward and a charge suction port for drawing in an oil from an oil tank in order to supply a charge oil to a hydraulic circuit fluidly connecting with the corresponding hydraulic motor unit are provided respectively in first and second assemblies formed by the corresponding pump case and port block. The drain port is provided on a wall surface other than an opposing wall surface facing each other of the wall surfaces of said first and second assemblies when arranging the first and second assemblies so that the input ends of each pump shaft are directed in the same direction.
摘要翻译：提供了一种工作车辆，其具有由驱动源可操作地驱动并且在车辆的宽度方向上彼此远离布置的第一和第二液压泵单元。在工作车辆中，第一和第二液压泵单元中的每一个包括泵体; 形成有用于向/从所述泵体供给/排出工作流体的油路的端口块; 连接到所述端口块的泵壳，以便限定用于围绕所述泵体的泵体容纳空间; 以及用于可旋转地驱动所述泵体的泵轴，所述泵轴具有可操作地连接到所述驱动源的输入端。分别在第一和第二位置分别设置用于将泵主体容纳空间向外打开的排出口和用于从油箱吸入油的供给吸入口，以便向与液压马达单元流体连接的液压回路供油装置由相应的泵壳和端口块形成的第二组件。当布置第一和第二组件时，排水口设置在不同于所述第一和第二组件的壁表面彼此面对的相对壁表面的壁表面上，使得每个泵轴的输入端指向相同的方向。

20. 发明申请

US20060191263A1 Hydrostatic transmission 有权
标题翻译：静液压传动
公开(公告)号：US20060191263A1
公开(公告)日：2006-08-31
申请号：US11392871
申请日：2006-03-30
申请人： Shigenori Sakikawa , Ryota Ohashi
发明人： Shigenori Sakikawa , Ryota Ohashi
IPC分类号： F16D39/00
CPC分类号： F15B7/005 , F15B7/008 , F15B21/042 , F16H61/4017 , F16H61/4035 , F16H61/4131
摘要： A hydrostatic transaxle comprises: a housing, an interior space of the housing serving as a fluid sump; an axle supported by the housing; a hydrostatic transmission disposed in the housing so as to drive the axle, the hydrostatic transmission including a hydraulic pump disposed in the housing, a hydraulic motor disposed in the housing, and a center section disposed in the housing, wherein the hydraulic pump and the hydraulic motor are mounted onto the center section, and wherein the center section is formed therein with a fluid circuit for circulation of fluid between the hydraulic pump and the hydraulic motor, and formed with an outwardly opened hole connected to the fluid circuit; a valve holding member fitted into the hole; and a relief valve connected to the fluid circuit through valve holding member. The relief valve is provided with a fixed flow restricting means for passing a specific amount of fluid from a higher-pressurized portion of the fluid circuit to a lower-pressurized portion of the fluid circuit. The relief valve allows fluid after passing through the fixed flow restricting means to flow to the lower-pressurized portion of the fluid circuit when a differential pressure between a primary pressure of fluid before passing through the fixed flow restricting means and a secondary pressure of fluid after passing through the fixed flow restricting means is zero or within a predetermined range.
摘要翻译：静液压驱动桥包括：壳体，所述壳体的内部空间用作流体槽; 由壳体支撑的轴; 设置在所述壳体中以驱动所述轴的静液传动装置，所述静液传动装置包括设置在所述壳体中的液压泵，设置在所述壳体中的液压马达和设置在所述壳体中的中心部分，其中所述液压泵和所述液压电动机安装在中心部分上，其中中心部分形成有用于在液压泵和液压马达之间循环流体的流体回路，并且形成有连接到流体回路的向外开口的孔; 安装在孔中的阀保持构件; 以及通过阀保持部件与流体回路连接的安全阀。安全阀设置有用于将特定量的流体从流体回路的较高加压部分传递到流体回路的较低加压部分的固定流量限制装置。安全阀允许当通过固定流量限制装置的流体的初级压力与经过固定流量限制装置的流体的次级压力之间的压力在经过固定流动限制装置之后的流体流到流体回路的较低加压部分通过固定流量限制装置是零或在预定范围内。

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