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    • 74. 发明公开
    • Pump unit and working vehicle
    • 泵单元和工作车辆
    • EP1531077A3
    • 2006-07-12
    • EP04025195.1
    • 2004-10-22
    • KANZAKI KOKYUKOKI MFG. CO., LTD.
    • Ohashi, Ryota, Kanzaki Kokyukoki Mfg. Co., Ltd.Sumomozawa, Hironori, Kanzaki Kokyukoki Mfg.Co.Ltd
    • B60K17/10B60K17/28
    • B60K17/28B60K17/10
    • There is provided a pump unit (1) for transmitting mechanical power from a driving source (150) through fluid power to first and second hydraulic motor units (160a,160b) allocated and arranged on both sides in a width direction of a vehicle so as to be output to a pair of right and left driving wheels (120). The pump unit (1) includes an input shaft (10) operatively connected to the driving source (150); first and second pump shafts (200,206) operatively connected to the input shaft (10); first and second hydraulic pump bodies (30a,30b) driven by the first and second pump shafts (20a,20b), respectively, and fluidly connected to the first and second hydraulic motor units (160a,160b), respectively; a housing (40) for supporting the input shaft (10), the first pump shaft (20a) and the second pump shaft (20b) and, also, containing therein the first and second hydraulic pump bodies (30a,30b); and a PTO device contained in the housing. The PTO device (50) has a PTO shaft (51) supported by the housing (40) so as to be substantially parallel to the input shaft (10). The housing (40) is configured to support the input shaft (10) and the PTO shaft (51) so that the input shaft (10) is arranged at substantially a central portion in the width direction of the vehicle and the PTO shaft (51) is displaced to and arranged on one side in the width direction of the vehicle with said input shaft as a reference, when the housing (40) is mounted in the working vehicle.
    • 80. 发明公开
    • Hydraulic pump unit, hydraulic pump set and working vehicle
    • Ablaufsystemfürhydraulische Antriebsvorrichtung
    • EP1586775A2
    • 2005-10-19
    • EP05007794.0
    • 2005-04-08
    • KANZAKI KOKYUKOKI MFG. CO., LTD.
    • Ohashi, RyotaKawakami, ManabuSakikawa, ShigenoriNozaki, Takeaki
    • F04B53/16F04B53/04B60K17/10F16H39/02
    • F04B53/16F04B53/04
    • 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.
    • 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体,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抽取油的供给吸入口,以便向与液压马达单元流体连接的液压回路供给补油。 由相应的泵壳和端口块形成的第二组件。 在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相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方向 。