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公开(公告)号：US20090008183A1
公开(公告)日：2009-01-08
申请号：US12206451
申请日：2008-09-08
IPC分类号： B60K17/00
CPC分类号： F04B1/22 , B60K17/28 , F04B23/06 , F04B23/106 , F16D31/02 , F16D31/08 , F16H39/14 , F16H61/4139
摘要： There is provided a pump unit configured to be capable of transmitting a rotational per from a driving power source which is operatively connected thereto to an actuator through a pair of hydraulic fluid lines. The pump unit includes: an input shaft; a hydraulic pump main body; a PTO shaft; a PTO clutch mechanism; and auxiliary pump main body; a suction line; a discharge line; a charge line; a PTO hydraulic fluid line; a pressure-reducing valve; and a resistance valve. The PTO hydraulic fluid line and the charge line are fluidly connected to the primary side and a secondary side of the pressure-reducing valve, respectively.
摘要翻译： 提供了一种泵单元，其构造成能够通过一对液压流体管线将来自与其可操作地连接的驱动动力源的旋转传递到致动器。 泵单元包括：输入轴; 液压泵主体; PTO轴; PTO离合器机构; 和辅助泵主体; 吸力线 排放线 充电线 PTO液压油管线; 减压阀; 和电阻阀。 PTO液压流体管线和加料管路分别与减压阀的初级侧和次级侧流体连接。
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公开(公告)号：US20100215517A1
公开(公告)日：2010-08-26
申请号：US12748805
申请日：2010-03-29
IPC分类号： F04B17/00
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：US20090260911A1
公开(公告)日：2009-10-22
申请号：US12350695
申请日：2009-01-08
IPC分类号： B60K8/00
CPC分类号： B60K17/356 , B60K17/105 , B60Y2200/223 , F16H61/4043 , F16H61/421 , F16H61/431 , F16H61/444
摘要： A hydraulic drive vehicle includes a bypass valve for fluidly connecting or disconnecting a pump/second-motor line and a second-motor/first-motor line, and set a capacity of a first hydraulic motor to a standard capacity which makes a peripheral speed of a first wheel driven by the first hydraulic motor equal to a peripheral speed of a second wheel driven by a second hydraulic motor when the bypass valve fluidly disconnects the two lines and set the capacity of the first hydraulic motor to a first capacity smaller than the standard capacity when the bypass valve fluidly connects the two lines. The present invention makes it possible to widen a variable range in which a traveling speed of the vehicle could be changed.
摘要翻译： 液压驱动车辆包括用于流体连接或断开泵/第二电动机线路和第二电动机/第一电动机线路的旁通阀，并且将第一液压马达的容量设定为标准容量，其使得圆周速度 第一液压马达驱动的第一轮等于由第二液压马达驱动的第二轮的圆周速度，当旁通阀流体地断开两条线并将第一液压马达的容量设定为小于标准的第一容量时 旁通阀流体连接两条线路时的容量。 本发明可以扩大可以改变车辆行驶速度的可变范围。
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公开(公告)号：US20080072587A1
公开(公告)日：2008-03-27
申请号：US11939800
申请日：2007-11-14
IPC分类号： F16D31/02
摘要： There is provided a pump unit including a plurality of hydraulic pump bodies disposed in parallel to each other, a plurality of pump shafts respectively supporting the plurality of hydraulic pump bodies in a relatively non-rotatable manner and a pump housing accommodating the plurality of pump bodies and supporting the plurality of pump shafts in a rotatable manner around respective axis lines, wherein each of the plurality of pump shafts has at least one end extending outward from the pump housing so as to form an input end.
摘要翻译： 提供了一种泵单元，其包括彼此平行设置的多个液压泵体，分别以相对不可旋转的方式支撑多个液压泵体的多个泵轴和容纳多个泵体的泵壳体 并且围绕相应的轴线以可旋转的方式支撑所述多个泵轴，其中所述多个泵轴中的每一个具有从所述泵壳向外延伸的至少一个端部，以形成输入端。
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公开(公告)号：US20080314675A1
公开(公告)日：2008-12-25
申请号：US12142400
申请日：2008-06-19
申请人： Takeaki NOZAKI , Toshifumi Yasuda
发明人： Takeaki NOZAKI , Toshifumi Yasuda
IPC分类号： B60K8/00
CPC分类号： B60K17/10 , B60K7/0015 , B60K23/0808 , B60Y2200/223 , F16H61/456
摘要： A hydraulic wheel-drive working vehicle according to the present invention makes it possible to change a driving state by a driving-mode switching valve between a right-left differential-lock driving state in which a pair of driving wheels are driven in an independent manner to each other with hydraulic fluid discharged from a hydraulic pump and having respective amounts defined by a flow dividing/combining mechanism and a right-left differential driving state in which the pair of left and right driving wheels are driven in a hydraulically differential manner to each other, and also to supply the hydraulic fluid from the hydraulic pump to the pair of hydraulic motors without being subjected to fluid load of the flow dividing/combining mechanism at the right-left differential driving state, thereby enhancing transmission efficiency at the right-left differential driving state.
摘要翻译： 根据本发明的液压轮驱动作业车辆使得可以通过驱动模式切换阀在独立地驱动一对驱动轮的左右差速锁驱动状态之间改变驱动状态 由液压泵排出的液压流体彼此分开，并且具有由分流/合并机构和左右差速驱动状态限定的相应量，其中左右驱动轮以液压方式被驱动到每个 并且还将液压泵从液压泵供给到一对液压马达，而不会在左右差速驱动状态下受到分流/组合机构的流体负载的影响，从而提高左右差速驱动状态下的传动效率 差速驱动状态。
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