Work vehicle

A work vehicle, comprising:

• a prime mover;
• a continuously variable transmission device comprised of an input shaft, an output shaft, an input pulley, an output pulley, and an endless belt;
• a transmission device configured to receive motive power from the prime mover via the continuously variable transmission device, adjust the motive power, and output the motive power as adjusted;
• and
• an axle drivable by the motive power from the transmission device,
• the transmission device comprising a first transmission section and a second transmission section connected to each other in series in a motive power transmission system for transmitting the motive power from the prime mover to the axle,
• the first transmission section comprising:
• a first power transmission shaft upstream in a motive power transmission direction;
• a second power transmission shaft downstream in the motive power transmission direction;
• and
• a first power transmission wheel and a second power transmission wheel each detachably attachable to each of the first power transmission shaft and the second power transmission shaft, and
• wherein:
• the first transmission section is switchable (i) in response to the first power transmission wheel being attached to the first power transmission shaft and the second power transmission wheel being attached to the second power transmission shaft, into a decelerating power transmission mode in which the first power transmission wheel and the second power transmission wheel decrease motive power transmitted from the first power transmission shaft to the second power transmission shaft and (ii) in response to the first power transmission wheel being attached to the second power transmission shaft and the second power transmission wheel being attached to the first power transmission shaft, into an accelerating power transmission mode in which the first power transmission wheel and the second power transmission wheel increase the motive power transmitted from the first power transmission shaft to the second power transmission shaft,
• the transmission device is switchable into (i) a first maximum speed power transmission mode in which the first transmission section is in the accelerating power transmission mode, and the second transmission section is in a transmission mode for a maximum speed and (ii) a second maximum speed power transmission mode in which the first transmission section is in the decelerating power transmission mode, and the second transmission section is in the transmission mode for a maximum speed, and
• the transmission device is configured to, in the first maximum speed power transmission mode, cause the axle to be driven at a first drive rate and, in the second maximum speed power transmission mode, cause the axle to be driven at a second drive rate, the first drive rate is higher than the second drive rate.