| 摘要 |
Three continuous steps (1, 2, 3) of a transportation apparatus, adjoining in front and in rear, are connected to one another by parallel links, thereby forming one step group (123), so that the tread of each step is horizontal at all times. The step group (123), having reached the terminal end of a first stroke track (01), is delivered from the stroke track (01) onto a carriage (7) in engagement with a guide groove (03) as friction wheels (91, 92) rotate. The step group (123) on the carriage (7) is transversely transferred together with the carriage (7) along a circuit which is formed of the guide groove. Then, as friction wheels (93, 94) rotate, the step group (123) on the carriage (7) is delivered to the starting end of a second stroke track (02), and travels in the opposite direction on the stroke track (02). While this is done, the direction of the one step group itself is not changed.
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