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公开(公告)号：US20080054717A1
公开(公告)日：2008-03-06
申请号：US11925241
申请日：2007-10-26
IPC分类号： B60T8/40
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 。
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公开(公告)号：US20050226747A1
公开(公告)日：2005-10-13
申请号：US11102708
申请日：2005-04-11
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 。
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公开(公告)号：US07316287B2
公开(公告)日：2008-01-08
申请号：US11102708
申请日：2005-04-11
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.
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公开(公告)号：US07934578B2
公开(公告)日：2011-05-03
申请号：US12748805
申请日：2010-03-29
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 。
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公开(公告)号：US07708104B2
公开(公告)日：2010-05-04
申请号：US11925241
申请日：2007-10-26
IPC分类号： B60K17/00
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 。
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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） 。
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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）。
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公开(公告)号：US07708531B2
公开(公告)日：2010-05-04
申请号：US10931095
申请日：2004-09-01
CPC分类号： F04B23/106 , F04B1/2014 , F04B1/2035
摘要： There is provided an axial piston device that includes a housing, a rotary shaft, a cylinder block, and a piston. The housing includes a housing body opened at a first end thereof and a plate disposed at the first end of the housing body. The rotary shaft is rotatably supported about an axis by the housing body and the plate. The cylinder block is rotated together with the rotary shaft and is accommodated inside the housing. The piston is accommodated in the cylinder block in slidable a manner in an axial direction. Furthermore, the plate is provided with a pair of first oil passages having first ends communicating with a discharge port and a suction port of the cylinder block and second ends opened to the surface of the plate, and a drain oil passage for allowing at least one of the first oil passages to communicate with an oil sump. The drain oil passage is provided with a rotary valve which can selectively switch a shutoff position at which the drain oil passage is shut off and a communication position at which the drain oil passage is communicated.
摘要翻译： 提供了一种轴向活塞装置，其包括壳体，旋转轴，气缸体和活塞。 壳体包括在其第一端开口的壳体和设置在壳体主体的第一端的板。 旋转轴通过壳体和板围绕轴线可旋转地支撑。 气缸体与旋转轴一起旋转并容纳在壳体内。 活塞以轴向方式可滑动地容纳在气缸体中。 此外，该板设置有一对第一油路，其具有与排出口和气缸体的吸入口连通的第一端和向板的表面开口的第二端，以及用于允许至少一个 的第一个油路与油底壳相通。 排水油路设置有能够选择性地切换排出油路被切断的切断位置的旋转阀和排水油路连通的连通位置。
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公开(公告)号：US06932179B2
公开(公告)日：2005-08-23
申请号：US10743067
申请日：2003-12-23
IPC分类号： B60K17/10 , B60K17/28 , B60K17/348 , B60K17/356
CPC分类号： B60K17/28 , B60K17/105 , B60K17/356 , B60Y2200/221
摘要： A hydraulic four-wheel driving apparatus is provided for a vehicle having a pair of left and right unsteerable wheels and a pair of left and right steerable wheels. The hydraulic four-wheel driving apparatus comprises: a transmission casing supporting the unsteerable wheels; a hydraulic pump disposed integrally with the transmission casing, the hydraulic pump being driven by a power source outside the transmission casing; a first hydraulic motor for driving the unsteerable wheels fluidly connected to the hydraulic pump, the first hydraulic motor being disposed integrally with the transmission casing; and a second hydraulic motor for driving the steerable wheels fluidly connected to the hydraulic pump, the second hydraulic motor being disposed integrally with the transmission casing and disposed on one side of the first hydraulic motor toward the steerable wheels.
摘要翻译： 为具有一对左右不可转向轮和一对左右可转向轮的车辆提供液压四轮驱动装置。 液压四轮驱动装置包括：支撑不可转向车轮的变速器壳体; 液压泵与变速器壳体一体设置，液压泵由变速箱外部的动力源驱动; 用于驱动与液压泵流体连接的不可转向轮的第一液压马达，第一液压马达与变速箱壳体一体设置; 以及用于驱动与液压泵流体连接的可转向轮的第二液压马达，所述第二液压马达与所述变速器壳体一体设置并且设置在所述第一液压马达的一侧朝向所述可转向轮。
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公开(公告)号：US20050053478A1
公开(公告)日：2005-03-10
申请号：US10931095
申请日：2004-09-01
CPC分类号： F04B23/106 , F04B1/2014 , F04B1/2035
摘要： There is provided an axial piston device that includes a housing, a rotary shaft, a cylinder block, and a piston. The housing includes a housing body opened at a first end thereof and a plate disposed at the first end of the housing body. The rotary shaft is rotatably supported about an axis by the housing body and the plate. The cylinder block is rotated together with the rotary shaft and is accommodated inside the housing. The piston is accommodated in the cylinder block in sidable a manner in an axial direction. Furthermore, the plate is provided with a pair of first oil passages having first ends communicating with a discharge port and a suction port of the cylinder block and second ends opened to the surface of the plate, and a drain oil passage for allowing at least one of the first oil passages to communicate with an oil sump. The drain oil passage is provided with a rotary valve which can selectively switch a shutoff position at which the drain oil passage is shut off and a communication position at which the drain oil passage is communicated.
摘要翻译： 提供了一种轴向活塞装置，其包括壳体，旋转轴，气缸体和活塞。 壳体包括在其第一端开口的壳体和设置在壳体主体的第一端的板。 旋转轴通过壳体和板围绕轴线可旋转地支撑。 气缸体与旋转轴一起旋转并容纳在壳体内。 活塞以轴向方式容纳在气缸体中。 此外，该板设置有一对第一油路，其具有与排出口和气缸体的吸入口连通的第一端和向板的表面开口的第二端，以及用于允许至少一个 的第一个油路与油底壳相通。 排水油路设置有能够选择性地切换排出油路被切断的切断位置的旋转阀和排水油路连通的连通位置。
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