Transmission for work vehicle

A transmission for a work vehicle having a forward/reverse switching lever and a gear shifting lever, the transmission being of a multi-axis type to be installed in the work vehicle for executing a loader work, the transmission comprising:

• an input shaft to which power is inputted;
• an output shaft coupled to a wheel of the work vehicle;
• at least one intermediate shaft disposed between the input shaft and the output shaft;
• a power transmission mechanism configured to transmit power from the input shaft to the output shaft through the at least one intermediate shaft;
• and
• a switching unit that is operatively coupled to the forward/rearward switching lever and the gear shifting lever, the switching unit being configured to switch a power transmission path from the input shaft to the output shaft in response to operation of the forward/rearward switching lever and the gear shifting lever;
• wherein the power transmission mechanism includes
• a forward travelling lower speed clutch configured to be set in a power transmitted state in a forward travelling lower speed range,
• a forward travelling higher speed clutch configured to be set in the power transmitted state in a forward travelling higher speed range,
• a rearward travelling clutch configured to be set in the power transmitted state in rearward travelling, and
• a plurality of speed stage switching clutches configured to switch among a plurality of speed stages, and
• the switching unit is configured to
• switch a gear stage into a shiftable rearward travelling gear stage by setting either the forward travelling lower speed clutch or the forward travelling higher speed clutch in a power blocked state and by setting the rearward travelling clutch in the power transmitted state upon the forward/rearward switching lever being operated to switch into rearward travelling during forward travelling, and
• switch the gear stage into a shiftable forward travelling gear stage by setting the rearward travelling clutch in the power blocked state and by setting the forward travelling lower speed clutch in the power transmitted state upon the forward/rearward switching lever being operated to switch into forward travelling being executed during rearward travelling, the forward travelling higher speed clutch being kept in the power blocked state regardless of a position of the gear shifting lever during the switching into forward travelling.