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1. 发明申请

US20080054717A1 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：US20080054717A1
公开(公告)日：2008-03-06
申请号：US11925241
申请日：2007-10-26
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： B60T8/40
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。

2. 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。

3. 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.

4. 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。

5. 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。

6. 发明授权

US07980351B2 Hydraulic transaxle 有权
标题翻译：液压传动桥
公开(公告)号：US07980351B2
公开(公告)日：2011-07-19
申请号：US12101724
申请日：2008-04-11
申请人： Koji Iwaki , Norihiro Ishii , Shigenori Sakikawa , Katsumoto Mizukawa , Manabu Kawakami , Kentaro Nagata
发明人： Koji Iwaki , Norihiro Ishii , Shigenori Sakikawa , Katsumoto Mizukawa , Manabu Kawakami , Kentaro Nagata
IPC分类号： B60K17/14
CPC分类号： B62D11/001 , B60K17/043 , B60K17/105 , B60K17/356 , B60Y2200/221 , B60Y2200/223 , B62D7/18 , B62D9/002 , F16H39/14
摘要： A transaxle (1), having a hydraulic drive unit (20) and a pair of left and right wheel support units (2L and 2R), is suspended from a vehicle frame so as to be turnable around a turning-center axis oriented in a fore-and-aft direction of a vehicle. The hydraulic drive unit (20) comprises: a pair of left and right hydraulic motors (23L and 23R) having respective left and right horizontal motor shafts (23b); a center section (22) formed therein with an oil passage for hydraulically connecting at least one of the hydraulic motors to a hydraulic pump, the center section having motor attachment surfaces onto which the hydraulic motors are attached; and a pair of left and right axle casings (2L and 2R) containing the respective hydraulic motors and supporting the respective motor shafts. The pair of wheel support units (30L and 30R), supporting respective left and right travel wheels (1L and 1R), are joined to respective outer ends of the left and right axle casings, and drivingly connected to the respective motor shafts (23b).
摘要翻译：具有液压驱动单元（20）和一对左右车轮支撑单元（2L和2R）的变速驱动桥（1）从车架悬挂，以便可绕着位于车辆的前后方向。液压驱动单元（20）包括：一对具有左右水平马达轴（23b）的左右液压马达（23L和23R）; 其中形成有用于将至少一个所述液压马达液压连接到液压泵的油路的中心部分，所述中心部分具有安装有所述液压马达的马达安装表面; 以及包含各液压马达并支撑各马达轴的一对左右轴箱（2L和2R）。支撑各左右行驶轮（1L，1R）的一对车轮支撑单元（30L，30R）与左右车轴壳体的各个外端部接合，驱动连接于各电动机轴（23b）。

7. 发明授权

US07431122B2 Hydraulic axle-drive device 有权
标题翻译：液压轴驱动装置
公开(公告)号：US07431122B2
公开(公告)日：2008-10-07
申请号：US10917557
申请日：2004-08-13
申请人： Koji Iwaki , Norihiro Ishii , Shigenori Sakikawa , Katsumoto Mizukawa , Manabu Kawakami , Kentaro Nagata
发明人： Koji Iwaki , Norihiro Ishii , Shigenori Sakikawa , Katsumoto Mizukawa , Manabu Kawakami , Kentaro Nagata
IPC分类号： B60K23/00
CPC分类号： B62D11/001 , B60K17/043 , B60K17/105 , B60K17/356 , B60Y2200/221 , B60Y2200/223 , B62D7/18 , B62D9/002 , F16H39/14
摘要： A transaxle (1), having a hydraulic drive unit (20) and a pair of left and right wheel support units (2L and 2R), is suspended from a vehicle frame so as to be turnable around a turning-center axis oriented in a fore-and-aft direction of a vehicle. The hydraulic drive unit (20) comprises: a pair of left and right hydraulic motors (23L and 23R) having respective left and right horizontal motor shafts (23b); a center section (22) formed therein with an oil passage for hydraulically connecting at least one of the hydraulic motors to a hydraulic pump, the center section having motor attachment surfaces onto which the hydraulic motors are attached; and a pair of left and right axle casings (2L and 2R) containing the respective hydraulic motors and supporting the respective motor shafts. The pair of wheel support units (30L and 30R), supporting respective left and right travel wheels (1L and 1R), are joined to respective outer ends of the left and right axle casings, and drivingly connected to the respective motor shafts (23b).
摘要翻译：具有液压驱动单元（20）和一对左右轮支撑单元（2L和2R）的变速驱动桥（1）从车架悬挂以能够围绕转向中心轴定向在车辆的前后方向。液压驱动单元（20）包括：一对具有左右水平电动机轴（23b）的左右液压马达（23L和23R）; 其中形成有用于将至少一个所述液压马达液压连接到液压泵的油路的中心部分，所述中心部分具有安装有所述液压马达的马达安装表面; 以及一对包含各个液压马达并支撑各个马达轴的左右轴壳体（2L和2R）。支撑各左右行车轮（1L，1R）的一对车轮支撑单元（30L，30R）与左右车轴箱的各自的外端接合，驱动地连接于各自的电动机轴（23b）。

8. 发明申请

US20080217991A1 Hydraulic Transaxle 有权
标题翻译：液压传动桥
公开(公告)号：US20080217991A1
公开(公告)日：2008-09-11
申请号：US12101724
申请日：2008-04-11
申请人： Koji IWAKI , Norihiro Ishii , Shigenori Sakikawa , Katsumoto Mizukawa , Manabu Kawakami , Kentaro Nagata
发明人： Koji IWAKI , Norihiro Ishii , Shigenori Sakikawa , Katsumoto Mizukawa , Manabu Kawakami , Kentaro Nagata
IPC分类号： B60B35/16
CPC分类号： B62D11/001 , B60K17/043 , B60K17/105 , B60K17/356 , B60Y2200/221 , B60Y2200/223 , B62D7/18 , B62D9/002 , F16H39/14
摘要： A transaxle (1), having a hydraulic drive unit (20) and a pair of left and right wheel support units (2L and 2R), is suspended from a vehicle frame so as to be turnable around a turning-center axis oriented in a fore-and-aft direction of a vehicle. The hydraulic drive unit (20) comprises: a pair of left and right hydraulic motors (23L and 23R) having respective left and right horizontal motor shafts (23b); a center section (22) formed therein with an oil passage for hydraulically connecting at least one of the hydraulic motors to a hydraulic pump, the center section having motor attachment surfaces onto which the hydraulic motors are attached; and a pair of left and right axle casings (2L and 2R) containing the respective hydraulic motors and supporting the respective motor shafts. The pair of wheel support units (30L and 30R), supporting respective left and right travel wheels (1L and 1R), are joined to respective outer ends of the left and right axle casings, and drivingly connected to the respective motor shafts (23b).
摘要翻译：具有液压驱动单元（20）和一对左右轮支撑单元（2L和2R）的变速驱动桥（1）从车架悬挂以能够围绕转向中心轴定向在车辆的前后方向。液压驱动单元（20）包括：一对具有左右水平电动机轴（23b）的左右液压马达（23L和23R）; 其中形成有用于将至少一个所述液压马达液压连接到液压泵的油路的中心部分，所述中心部分具有安装有所述液压马达的马达安装表面; 以及一对包含各个液压马达并支撑各个马达轴的左右轴壳体（2L和2R）。支撑各左右行车轮（1L，1R）的一对车轮支撑单元（30L，30R）与左右车轴箱的各自的外端接合，驱动地连接于各自的电动机轴（23b）。

9. 发明申请

US20060269421A1 Axial piston device 审中-公开
标题翻译：轴向活塞装置
公开(公告)号：US20060269421A1
公开(公告)日：2006-11-30
申请号：US11498016
申请日：2006-08-03
申请人： Shigenori Sakikawa , Manabu Kawakami
发明人： Shigenori Sakikawa , Manabu Kawakami
IPC分类号： F04B49/06 , F04B1/26 , F04B27/08
CPC分类号： F16H61/40 , F04B1/2021 , F04B1/2042 , F04B1/2064 , F04B23/106 , F16H39/14 , F16H61/4043 , F16H61/4139 , F16H61/4165
摘要： There is provided an axial piston device with which a pair of first oil passages and a drain oil passage for allowing at least one of the first oil passages to communicate with an oil sump. The axial piston device includes a rotary valve rotated around its axis so as to take a shutoff position/a communication position at which the drain oil passage is respectively shut off and communicated. The rotary valve includes a main body, a small-diameter portion that is contracted with a step from the main body, a flange portion that is enlarged from the small-diameter portion with a step, and a communication groove formed on the outer peripheral surface of the main body. The communication groove is formed at the position in the circumferential direction so as to be fluidly shutoff with respect to an upstream-side drain oil passage of the drain oil passage when the rotary valve is positioned at the shutoff position, and fluidly connected to the upstream-side drain oil passage when the rotary valve is positioned at the communication position.
摘要翻译：提供了一种轴向活塞装置，通过该轴向活塞装置，一对第一油通道和排出油通道用于允许至少一个第一油通道与油底壳连通。轴向活塞装置包括围绕其轴线旋转的旋转阀，以便取消排泄油通道分别切断和连通的关闭位置/连通位置。旋转阀包括主体，从主体以台阶收缩的小直径部分，具有从台阶的小直径部分扩大的凸缘部分和形成在外周面上的连通槽的主体。连通槽形成在圆周方向上的位置，以便当旋转阀位于关闭位置时相对于排放油通道的上游侧排放油通道流体关闭，并且流体地连接到上游当旋转阀位于连通位置时，排出油通道。

10. 发明申请

US20050121249A1 Hydraulic axle-drive device 有权
标题翻译：液压轴驱动装置
公开(公告)号：US20050121249A1
公开(公告)日：2005-06-09
申请号：US10917557
申请日：2004-08-13
申请人： Koji Iwaki , Norihiro Ishii , Shigenori Sakikawa , Katsumoto Mizukawa , Manabu Kawakami , Kentaro Nagata
发明人： Koji Iwaki , Norihiro Ishii , Shigenori Sakikawa , Katsumoto Mizukawa , Manabu Kawakami , Kentaro Nagata
IPC分类号： B60K17/04 , B60K17/10 , B60K17/356 , B62D7/18 , B62D9/00 , B62D11/00 , F16H39/14 , B60K17/30
CPC分类号： B62D11/001 , B60K17/043 , B60K17/105 , B60K17/356 , B60Y2200/221 , B60Y2200/223 , B62D7/18 , B62D9/002 , F16H39/14
摘要： A transaxle (2), having a hydraulic drive unit (20) and a pair of left and right wheel support units (2L and 2R), is suspended from a vehicle frame so as to be turnable around a turning-center axis oriented in a fore-and-aft direction of a vehicle. The hydraulic drive unit (20) comprises: a pair of left and right hydraulic motors (23L and 23R) having respective left and right horizontal motor shafts (23b); a center section (22) formed therein with an oil passage for hydraulically connecting at least one of the hydraulic motors to a hydraulic pump, the center section having motor attachment surfaces onto which the hydraulic motors are attached; and a pair of left and right axle casings (2L and 2R) containing the respective hydraulic motors and supporting the respective motor shafts. The pair of wheel support units (2L and 2R), supporting respective left and right travel wheels (12L and 12R) are joined to respective outer ends of the left and right axle casings, and drivingly connected to the respective motor shafts (23b).
摘要翻译：具有液压驱动单元（20）和一对左右车轮支撑单元（2L和2R）的变速驱动桥（2）从车架悬挂以能够围绕转向中心轴定向在车辆的前后方向。液压驱动单元（20）包括：一对具有左右水平电动机轴（23b）的左右液压马达（23L和23R）; 其中形成有用于将至少一个所述液压马达液压连接到液压泵的油路的中心部分，所述中心部分具有安装有所述液压马达的马达安装表面; 以及一对包含各个液压马达并支撑各个马达轴的左右轴壳体（2L和2R）。支撑各左右行驶轮（12L，12R）的一对车轮支撑单元（2L，2R）与左，右车轴壳体的各个外端部接合，驱动地连接于各个电动机轴（23 b）。

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