An article transport facility comprising: a travel rail; an article transport vehicle that includes a power receiving portion to which driving electric power is supplied contactlessly from an electricity supply line provided along the travel rail and that is capable of traveling while being guided by the travel rail, wherein the travel rail and the electricity supply line extend along a predetermined travel path that is formed by combining a straight portion and a curved portion; wherein the article transport vehicle includes a vehicle main body, and a travel portion having a guide wheel that contacts and is guided by the travel rail with respect to a horizontal direction and a travel wheel that is driven and rotated and that contacts the travel rail, wherein the travel portion is connected to the vehicle main body by a connecting shaft such that the travel portion is rotatable about a vertical axis with respect to the vehicle main body, wherein the power receiving portion is supported by a guide rail that is provided to the vehicle main body and that extends in a lateral direction of the article transport vehicle such that the power receiving portion can be moved in the lateral direction of the article transport vehicle, wherein the article transport vehicle includes power receiving portion moving means for moving the power receiving portion outwardly of the curved portion in the lateral direction of the article transport vehicle in association with a rotation of the connecting shaft as the travel portion rotates about the vertical axis with respect to the vehicle main body while traveling in the curved portion, and wherein the power receiving portion moving means includes a pinion portion that can be rotated in unison with the connecting shaft and a rack portion that is formed in the power receiving portion to extend along the lateral direction of the article transport vehicle and that meshes with the pinion portion. a travel rail; an article transport vehicle that includes a power receiving portion to which driving electric power is supplied contactlessly from an electricity supply line provided along the travel rail and that is capable of traveling while being guided by the travel rail, wherein the travel rail and the electricity supply line extend along a predetermined travel path that is formed by combining a straight portion and a curved portion; wherein the article transport vehicle includes a vehicle main body, and a travel portion having a guide wheel that contacts and is guided by the travel rail with respect to a horizontal direction and a travel wheel that is driven and rotated and that contacts the travel rail, wherein the travel portion is connected to the vehicle main body by a connecting shaft such that the travel portion is rotatable about a vertical axis with respect to the vehicle main body, wherein the power receiving portion is supported by a guide rail that is provided to the vehicle main body and that extends in a lateral direction of the article transport vehicle such that the power receiving portion can be moved in the lateral direction of the article transport vehicle, wherein the article transport vehicle includes power receiving portion moving means for moving the power receiving portion outwardly of the curved portion in the lateral direction of the article transport vehicle in association with a rotation of the connecting shaft as the travel portion rotates about the vertical axis with respect to the vehicle main body while traveling in the curved portion, and wherein the power receiving portion moving means includes a pinion portion that can be rotated in unison with the connecting shaft and a rack portion that is formed in the power receiving portion to extend along the lateral direction of the article transport vehicle and that meshes with the pinion portion.