To provide a slat conveyer device that can be easily assembled and disassembled, has a short mounting execution period, and has a high degree of freedom of layout change.

The slat conveyer device conveys a conveyed object by circulating and driving a slat chain 104. The slat conveyer device comprises a driving unit 110 having a driving sprocket pivoted by a hollow shaft, a driven unit 120 having a driven sprocket 121 pivoted by a driven shaft 121a, and an intermediate frame unit 130 for interconnecting the driving unit and the driven unit. The slat chain is circulated and hung on the driving sprocket and the driven sprocket, and both side parts of the slat chain are slidably supported by guide rails 131 disposed in both side parts of the intermediate frame unit.