| 摘要 |
A transmission box (3) for a wheeled machine having, within the box (3), a motor input shaft (4) driving a drive wheel to actuate at least one drive shaft of at least one wheel (2A, 2B) of the machine (1). A clutch mechanism is disposed between the drive wheel and the drive shaft of the wheels (2A, 2B) of the machine (1), this clutch mechanism being actuated by driving in rotation the drive wheel and axial movement of a member on the drive shaft of the wheels (2A, 2B) and deactuated by driving in rotation the drive shaft of the wheels (2A, 2B). The member which is axially movable in the drive shaft of the wheels carries ramps coacting with a member secured in rotation with the shaft.
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