| CPC B65G 1/0492 (2013.01) [B61B 3/02 (2013.01); B61B 5/02 (2013.01); B65G 1/0457 (2013.01); B65G 1/0464 (2013.01); B65G 35/06 (2013.01); H01L 21/67715 (2013.01); H01L 21/67733 (2013.01); H01L 21/67736 (2013.01); B65G 2201/0235 (2013.01); B65G 2201/0297 (2013.01)] | 11 Claims |
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1. An article transport facility comprising:
a first carriage that travels along a first path that is formed along a ceiling;
a second carriage that travels along a second path whose one end or both ends are connected to the first path in a plan view; and
wherein:
a travel rail that is provided along the second path,
the second carriage comprises:
a main body that travels along the travel rail;
a holding unit that holds an article; and
a lifting/lowering mechanism that lifts and lowers the holding unit relative to the main body, and is configured to, when transferring the article between a transfer target position that is located below the second path and the holding unit, lower the holding unit by using the lifting/lowering mechanism to a height corresponding to the transfer target position,
the first carriage is provided with a support rail that supports the main body, and is configured to travel along the first path together with the second carriage that includes the main body, in a supporting state supporting the main body using the support rail,
in a state where the first carriage is located at a connection part of the first path, which is connected to the second path, the support rail is located on an extension line of the travel rail, and the second carriage is configured to travel along the travel rail that is provided along
the second path, independently from the first carriage, such that the first carriage is in a non-supporting state, the main body is supported by the travel rail instead of the support rail, and the second carriage is devoid of connection to the first carriage.
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