| 摘要 |
A rail guided vehicle provided with a lateral pair of adjustable rollers in height is allowed to travel along travelling rails provided with a lateral pair of guide parts having long and short two vertically protruding lengths. Positions of the adjustable rollers in height may be changed such that both rollers are in an intermediate position or one is in an advanced position and the other is in a retracted position. One travelling rail branches into a first branching side and a branching/merging side, and the branching/merging side merges with a straight-travelling side of another travelling rail. When the rail guided vehicle travels on the one travelling rail toward the first branching side and travels straight on the other travelling rail, the height adjustable roller on the side opposite the branching/merging side takes the advanced position, and when travels on the branching/merging side, the rollers take the intermediate position. |
