The object of the present invention is to improve the productivity and make the assembling operation easier in a carrier apparatus for carrying a work while performing an assembling operation by making effective use of an inside region, even in the case where a conveyor line is provided in the form of a circling route.In a free flow type conveyor line (1) in which a work is loaded on a pallet (2) having a floor surface which travels substantially at the same level as a floor surface (5) for operation, a horizontal curved section (3) is provided in a section of the line (1), and the pallet (2) is divided into a first, a second and a third divided pallet elements (2A, 2B, 2C) in the carrying direction. The respectively divided pallet elements (2A, 2B, 2C) are mutually turnable in the horizontal plane by connecting the first divided pallet element (2A) to the second divided pallet elements (2B), and the second divided pallet element (2B) to the third divided pallet elements (2C), respectively through vertically extending pivot pins (9).