Patent ID: 9199826
Filing Date: 2015-12-01
Classification: B66C,H01L

Abstract:
1. An article transport facility comprising: at least two travel paths including a first travel path and a second travel path which straddles the first travel path from one side to the other side in a lateral direction of the first travel path; an article transport vehicle capable of traveling along the travel paths; wherein in a straddling portion, which is a part of the second travel path that straddles the first travel path, the second travel path is provided at a different height from the first travel path in a vertical direction and is configured such that travel of the article transport vehicle along the first travel path and travel of the article transport vehicle along the second travel path are mutually allowed, wherein the article transport vehicle is configured to be able to travel along the second travel path sequentially from one side in the lateral direction of the first travel path, through the straddling portion, and to an other side in the lateral direction of the first travel path, and wherein a first travel rail which defines the first travel path and a second travel rail which defines the second travel path are provided, wherein the second travel rail includes a first height rail portion provided on the one side and the other side in the lateral direction of the first travel path and at a same height as the first travel rail in the vertical direction, a second height rail portion provided in the straddling portion at a different height from the first travel rail in the vertical direction, and a vertically movable rail portion which can be vertically moved by a vertical mover between a first height at which the vertically movable rail portion is in series with the first height rail portion and a second height at which the vertically movable rail portion is in series with the second height rail portion, wherein the vertically movable rail portion is provided between the straddling portion and the one side in the lateral direction of the first travel path and between the straddling portion and the other side in the lateral direction of the first travel path.