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    • 8. 发明公开
    • 전후진하면서 작업을 행하는 작업차를 위한 변속장치
    • 用于在前进和后退移动时的车辆工作中的车速变化装置
    • KR1020030014648A
    • 2003-02-19
    • KR1020020046766
    • 2002-08-08
    • 가부시끼 가이샤 구보다
    • 모리모토이사무요시오카히데타카사와이메구미사토겐이치하나모토기요시야마우에야스노부오사와신지사에구사마코토야마모토신지고바야시다이스케가시모토다츠유키
    • F16H63/20
    • F16H59/10B60Y2200/41F16H59/02F16H2059/0256Y10T74/19223Y10T74/19251Y10T74/20018Y10T74/20159
    • PURPOSE: A speed change apparatus for a working vehicle, which engages in operations while moving forward and backward is provided to improve manipulability of a gearshift lever and simplify the structure of the speed change apparatus. CONSTITUTION: A speed change apparatus for a working vehicle, which engages in an operation while moving forward and backward, includes a first shaft(14) for receiving driving torque from an engine, a second shaft(18) for transmitting the driving torque to a rear wheel differential, a speed change mechanism(9) for changing speed of the driving torque received from the first shaft and transmits the driving torque to the second shaft, and a gearshift lever for selectively switching the speed change mechanism. The speed change mechanism has a high forward speed stage for changing the speed of the driving torque received from the first shaft to a high forward speed for transmission to the second shaft, a low forward speed stage for changing the speed of the driving torque received from the first shaft to a low forward speed for transmission to the second shaft, a backward drive stage for changing the speed of the driving torque received from the first shaft to a low backward speed for transmission to the second shaft, and a neutral stage. The shift lever is movable along shift control paths including a transverse control path extending transversely, a first longitudinal control path extending longitudinally from one side of the transverse control path, a second longitudinal control path extending longitudinally from the one side of the transverse control path and spaced from the first longitudinal control path, and a third longitudinal control path extending longitudinally from the other side of the transverse control path. The high forward speed stage is selected when the shift lever is operated to an end of the first longitudinal control path. The low forward speed stage is selected when the shift lever is operated to an end of the second longitudinal control path. The backward drive stage is selected when the shift lever is operated to an end of the third longitudinal control path. The neutral stage is selected when the shift lever is operated to the transverse control path.
    • 目的:提供一种工作车辆的变速装置,其在向前和向后移动时进行操作,以提高换档杆的操纵性并简化变速装置的结构。 构成:用于工作车辆的变速装置,其在前进和后退的同时进行操作,包括用于从发动机接收驱动扭矩的第一轴(14),用于将驱动扭矩传递到 后轮差速器,用于改变从第一轴接收的驱动扭矩的速度并将驱动扭矩传递到第二轴的变速机构(9),以及用于选择性地切换变速机构的换档杆。 变速机构具有高的前进速度级,用于将从第一轴接收的驱动转矩的速度改变为向前传递到第二轴的高前进速度,用于改变从第二轴接收的驱动转矩的速度的低速前进档 第一轴到低速传递到第二轴,用于将从第一轴接收的驱动扭矩的速度改变为向后速度的传递到第二轴的后退驱动级和中性级。 变速杆可沿着包括横向延伸的横向控制路径的横向控制路径移动,从横向控制路径的一侧纵向延伸的第一纵向控制路径,从横向控制路径的一侧纵向延伸的第二纵向控制路径, 与第一纵向控制路径间隔开,并且从横向控制路径的另一侧纵向延伸的第三纵向控制路径。 当变速杆操作到第一纵向控制路径的一端时,选择高前进档。 当变速杆操作到第二纵向控制路径的一端时,选择低速前进档。 当变速杆操作到第三纵向控制路径的一端时,选择向后驱动级。 当变速杆操作到横向控制路径时,选择中立档。