TRAVEL TRANSMISSION DEVICE FOR TRACTOR

A front wheel clutch 40 and a front wheel acceleration clutch 60 are supported to a front wheel transmission shaft 29. Between the front wheel clutch 40 and the front wheel acceleration clutch 60, there is provided a holder 70B supporting the front wheel transmission shaft 29. A first operational oil passage 91 for switching over the front wheel clutch 40 is defined respectively in and between the holder 70B and the front wheel transmission shaft 29. A second operational oil passage 94 for switching over the front wheel acceleration clutch 60 is defined respectively in and between the holder 70B and the front wheel transmission shaft 29.