| 摘要 |
PURPOSE:To reduce the area occupied by a station, by providing a plurality of storage sections on different levels in a tower constituting the station and by using an elevator on an unmanned conveying vehicle to vertically move a conveyed article to correspond to the storage section. CONSTITUTION:When the downward movement of a full container M1 is completed, an unmanned conveying vehicle 1 moves up the elevator 19 of an automatic reloader 18 according to an instruction from a main body controller and light is sent from a light emitter for an upper-level reloading request signal. When the light is received by a light receiver at a station 10 to which a transfer conveyor is moved forth, the station already has a working instruction from a control unit and the transfer conveyor of the unmanned vehicle 1 is already moved forth to a prescribed position, the stopper 6 of an empty container move- down section S4 is opened. At that time, if an empty container M2 is still loaded, light is sent from a light emitter for an upper-level reloading instruction. When the latter light is received, the upper empty container M2 is automatically loaded into the unmanned vehicle 1. After that, the elevator 19 is moved down, the stopper 6 is closed and the reloading of the full container M1 and the empty container M2 are completed. |
