| 摘要 |
PROBLEM TO BE SOLVED: To move a working vehicle on its own on emergency to a position (crossing, in general) where change from a traveling position on a railroad rail to a traveling position on a general road can be performed.SOLUTION: In a working vehicle traveling on both tracks and roads, tire wheels 2 and steel wheels 4 are rolled by different drive sources, respectively. To a front pair and a rear pair of the steel wheels 4 positioned on a railroad rail R so as to freely roll, a sprocket coaxially positioned on the same axis as the axle of the steel wheels is attached. Also, a driving sprocket 10 for spreading a chain between that sprocket is attached to the tire wheels 2 for drive that are positioned above the steel wheels 4 on a railroad rail R so as to be rotated coaxially with the axle of the tire wheels 2, and attaching work and a work of spreading the chain 11 between the respective sprockets are performed one after another. Thereafter, the tire wheels 2 for drive are driven by a drive unit of the tire wheels 2 and the steel wheels 4 are turned, and traveling to a desired position on the railroad rail is performed. |
