| 摘要 |
Three longitudinally continuous steps (1, 2, 3) in a transfer apparatus are connected together by parallel links to form one step unit (123), and the surfaces of these steps are kept horizontal at all times. The step unit arrived at terminal ends of first stroke rails (01) is sent out from the stroke rails (01) onto a mount table (7) engaged with a guide groove (03) owing to the rotation of friction wheels (91, 92). The step unit (123) placed on the mount table (7) is transferred together with the mount table (7) in the lateral direction along a circulating passage formed by this guide groove. The step unit (123) on the mount table (7) is then sent out to starting ends of second stroke rails (02) owing to the rotation of friction wheels (93, 94) and runs on these stroke rails (02) in the direction opposite to the direction mentioned above. During this time, the direction of the one step unit itself is not changed.
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