Article Transport Facility

An article transport facility comprising:

• a plurality of ceiling guided vehicles that travel along a traveling rail provided on a ceiling side, wherein each of the ceiling guided vehicle includes:
• a holding portion that holds an article to be transported;
• a body portion that supports the holding portion such that the holding portion can be moved up and down;
• a power-driven travel driving portion that drives the ceiling guided vehicle to travel;
• a power-driven elevation driving portion that drives the holding portion to move up and down;
• and
• a control portion that outputs a control signal and controls operation of the travel driving portion and the elevation driving portion;
• and
• an auxiliary unit that supplies, to the ceiling guided vehicle, one or both of power for driving the travel driving portion and the elevation driving portion and the control signal is provided so as to be attachable to and removable from the ceiling guided vehicle, the auxiliary unit includes a supported portion configured to be supported in a suspended state on a supporting portion provided on the ceiling guided vehicle;
• and
• an abutment portion configured to abut against the ceiling guided vehicle in a plurality of abutment areas disposed at different positions in plan view, and the abutment areas are provided at positions lower than the supporting portion in a vertical direction.