| 摘要 |
It is an object of the present invention to provide an overhead travelling carriage system comprising overhead travelling carriages each conveying an article and a running path along which the overhead travelling carriages run, wherein buffers each temporarily storing articles are provided so that an article from the buffer can be delivered to the overhead travelling carriage in a short time, vice versa. Roller conveyors 8, 8 are mounted in an overhead travelling carriage 10 to load and unload an article (a cassette 9 or the like) in a direction orthogonal to a direction in which a carriage body advances. Buffers each comprising roller conveyors 46, 46 are arranged at a side of a running path 2 and at a height corresponding to the roller conveyors 8, 8 of the overhead travelling carriage 10.
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