Power train for work vehicle

摘要

A power train for a tractor includes an engine power transmission shaft extending along the longitudinal direction of the vehicle body rearwardly of an engine, and a hydrostatic stepless speed changer unit (HST) configured to input power from the engine. A pump and a motor of the HST are juxtaposed along the transverse direction of the vehicle body. A planetary gear unit is disposed rearwardly of the HST in the longitudinal direction of the vehicle body. The planetary gear unit is configured to input power from the engine via the engine power transmission shaft and power from the HST and to output a traveling power. A branch transmission mechanism is disposed forwardly of the HST in the longitudinal direction of the vehicle body and configured to transmit the power from the engine to an input shaft of the pump and to the engine power transmission shaft in distribution.