Conveyance vehicle system

A transport vehicle system comprising a transport vehicle configured to travel on a track provided on a ceiling of a building to transport an article, and a storage device configured to store the article, wherein

• the transport vehicle has
• a traveling section configured to travel on the track,
• a holding section configured to hold the article,
• a lifting drive section configured to raise and lower the holding section with respect to the traveling section,
• a sliding section configured to move the holding section and the lifting drive section in a horizontal direction with respect to the traveling section, and
• a transport vehicle control section configured to control the transport vehicle, the storage device has
• a stocker having a rack in which a plurality of placing sections arranged vertically and horizontally are disposed, and
• a transfer device configured to deliver the article to the placing sections, among the placing sections disposed in an uppermost row of the rack, at least one first placing section for storage and at least one second placing section for retrieval are set, and
• the transport vehicle control section controls the traveling section, the lifting drive section, and the sliding section to deliver the article held by the holding section to the first placing section and receive the article placed on the second placing section, in a state of being stopped at a specific stopping position.