Hydraulic pump unit, hydraulic pump set, and working vehicle
    71.
    发明授权
    Hydraulic pump unit, hydraulic pump set, and working vehicle 有权
    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

    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 。

    Tractor
    73.
    发明授权
    Tractor 失效
    拖拉机

    公开(公告)号:US07523789B2

    公开(公告)日:2009-04-28

    申请号:US10594346

    申请日:2005-03-25

    IPC分类号: A01B59/043

    CPC分类号: A01B59/067 B62D49/02

    摘要: A tractor of the present invention can reduce a manufacturing cost of a lift arm support body. The tractor is configured such that a lift arm is mounted on an upper portion of a transmission casing by way of a lift arm support body, the lift arm is hydraulically controllable by a hydraulic control valve by way of a hydraulic circuit body, and the hydraulic circuit body and the hydraulic control valve are fixed to the transmission casing as bodies separate from a lift arm support body.

    摘要翻译: 本发明的拖拉机可以降低提升臂支撑体的制造成本。 拖拉机构造成使得提升臂通过提升臂支撑体安装在变速器壳体的上部上,提升臂由液压回路体由液压控制阀液压控制,液压 电路体和液压控制阀作为与提升臂支撑体分离的主体固定到变速器壳体。

    Hydraulic steering transaxle and hydraulic driving vehicle
    75.
    发明授权
    Hydraulic steering transaxle and hydraulic driving vehicle 有权
    液压转向驱动桥和液压驾驶车

    公开(公告)号:US07455145B2

    公开(公告)日:2008-11-25

    申请号:US11617278

    申请日:2006-12-28

    IPC分类号: B60K17/356

    摘要: A steering transaxle comprises: left and right drive shafts drivingly connected to respective steerable wheels; a differential gear unit differentially connecting the drive shafts to each other; a transaxle casing having an opening, the transaxle casing incorporating the differential gear unit and the drive shafts; a cover for covering the opening of the transaxle casing; a variable hydraulic motor having a movable swash plate, the hydraulic motor being provided on the inside of the cover; a motor control mechanism for controlling the movable swash plate, the motor control mechanism being provided on the outside of the cover; and a hydraulic oil port for oil supply and delivery to and from the hydraulic motor, the hydraulic oil port being provided on the outside of the cover.

    摘要翻译: 转向驱动桥包括:左右驱动轴驱动地连接到相应的可转向轮; 差速齿轮单元,其将所述驱动轴彼此差分连接; 具有开口的变速驱动桥套管,包括差速齿轮单元的驱动轴套和驱动轴; 用于覆盖变速驱动桥壳体的开口的盖; 具有可动斜盘的可变液压马达,所述液压马达设置在所述盖的内侧; 用于控制可动斜盘的马达控制机构,马达控制机构设置在盖的外侧; 以及用于向液压马达供油的液压油口,液压油口设置在盖的外侧。

    Transmission mechanism for vehicles having HST and pressure oil supply system therefor
    76.
    发明授权
    Transmission mechanism for vehicles having HST and pressure oil supply system therefor 有权
    具有HST和压力油供应系统的车辆传动机构

    公开(公告)号:US07422077B2

    公开(公告)日:2008-09-09

    申请号:US11385481

    申请日:2006-03-20

    IPC分类号: B60K17/10 B60K17/28

    摘要: A transmission mechanism and a pressure oil supply system therefor are provided for use in work vehicles provided with a work device externally of the body of the vehicle at longitudinal one side thereof, the transmission mechanism being simple in construction and serving to shorten the overall length of the vehicle while holding a transmission shaft interconnecting a PTO shaft and an input shaft for the work device close to a horizontal. A work vehicle provided with a work device in front of the vehicle body comprises a transmission disposed between a differential gear unit and an HST and providing a travel cooperative mechanism, a PTO shaft projecting from the housing of the HST, and a PTO cooperative mechanism disposed in the housing for dividedly deriving power for the PTO shaft from the travel cooperative mechanism for the transmission of the power. The HST comprises a hydraulic pump having a pump shaft for receiving an input at its rear end, and a hydraulic motor having a motor shaft for delivering a front wheel driving force and a rear wheel driving force from the front end and rear end thereof, respectively.

    摘要翻译: 传动机构及其压力供油系统用于工作车辆的纵向一侧设置在车体的外部的工作装置,该传动机构的结构简单且用于缩短车辆的总长度 同时保持将PTO轴和用于工作装置的输入轴互连在水平方向上的传动轴。 在车身前方配备有作业装置的作业车辆包括设置在差速齿轮单元和HST之间的变速器,并且提供行驶协作机构,从HST的壳体突出的PTO轴以及设置在车架上的PTO协作机构 在用于传输动力的行驶协调机构中用于PTO轴的分离式动力的壳体中。 HST包括具有用于在其后端接收输入的泵轴的液压泵和具有用于分别从其前端和后端输送前轮驱动力和后轮驱动力的马达轴的液压马达 。

    Hydraulic Fluid Supply Structure
    79.
    发明申请
    Hydraulic Fluid Supply Structure 失效
    液压油供应​​结构

    公开(公告)号:US20070137972A1

    公开(公告)日:2007-06-21

    申请号:US11611580

    申请日:2006-12-15

    IPC分类号: F16D25/08

    摘要: There is provided a hydraulic fluid supply structure including: a discharge line fluidly connected to a discharge port of a hydraulic pump body and regulated to have a first pressure value; an external hydraulic fluid extraction line for supplying the hydraulic fluid to an actuator for raising and lowering a working machine, the external hydraulic fluid extraction line being fluidly connected to the discharge line through a resistance valve; a PTO hydraulic fluid line for supplying the hydraulic fluid to a hydraulic operating type clutch mechanism for engaging or disengaging power transmission to the working machine, the PTO hydraulic line being fluidly connected to the discharge line through a throttle valve and regulated to have a second pressure value lower than the first pressure value; and a PTO switching valve interposed in the PTO hydraulic fluid line so as to turn ON/OFF the supply of the hydraulic fluid to the hydraulic clutch mechanism. The PTO switching valve is configured to block a primary side line, out of the PTO hydraulic line, positioned on the upstream side from the PTO switching valve, when the supply of hydraulic fluid to the hydraulic clutch mechanism is turned OFF.

    摘要翻译: 提供了一种液压流体供给结构,包括:流体连接到液压泵体的排出口并被调节为具有第一压力值的排出管线; 用于将液压流体供应到用于升降工作机械的致动器的外部液压流体抽出管线,所述外部液压流体抽出管线通过电阻阀流体地连接到排出管线; 用于将液压流体供给到液压操作型离合器机构的PTO液压流体管线,用于接合或分离到工作机械的动力传递,PTO液压管线通过节流阀流体地连接到排出管线并被调节成具有第二压力 值低于第一压力值; 以及插入在PTO液压流体管线中的PTO切换阀,以将液压流体的供给接通/关闭到液压离合器机构。 当向液压离合器机构的液压流体的供给关闭时,PTO切换阀被构造成阻挡位于PTO切换阀的上游侧的PTO液压管线的一次侧线。

    Axle driving apparatus
    80.
    发明申请
    Axle driving apparatus 失效
    车轴驱动装置

    公开(公告)号:US20070051102A1

    公开(公告)日:2007-03-08

    申请号:US11594842

    申请日:2006-11-09

    IPC分类号: F16D31/02

    摘要: An axle driving apparatus comprises: a common housing; a pair of coaxial axles disposed in the housing; a common input shaft for receiving power from a prime mover, the common input shaft being extended perpendicular to the axles in the housing and passed through a gap between the axles; and a pair of stepless transmissions sharing power from the common input shaft, and transmitting power to the respective axles. The pair of stepless transmissions are arranged in the housing symmetrically centered on an axis of the common input shaft. The axle driving apparatus further comprises: a PTO shaft disposed coaxially to the common input shaft; a clutch disposed in the housing and interposed between the common input shaft and the PTO shaft; and a brake which is applied simultaneously to disengagement of said clutch so as to prevent inertial rotation of said PTO shaft.

    摘要翻译: 车轴驱动装置包括:公共壳体; 设置在壳体中的一对同轴轴; 用于从原动机接收动力的公共输入轴,公共输入轴垂直于壳体中的轴延伸并且通过轴之间的间隙; 以及一对从公共输入轴共用动力的无级变速器,并将功率发送到相应的轴。 一对无级变速器布置在壳体中对称地以公共输入轴的轴线为中心。 车轴驱动装置还包括:与公共输入轴同轴设置的PTO轴; 离合器,其设置在所述壳体中并且插入在所述公共输入轴和所述PTO轴之间; 以及与所述离合器分离同时施加以防止所述PTO轴的惯性旋转的制动器。