PROBLEM TO BE SOLVED: To provide a covering body capable of preventing over heat of a DPF unit.SOLUTION: An engine is arranged in an engine room provided in front of a grain tank. A DPF unit 40 for purifying exhaust gas of the engine is arranged in a space S formed between a threshing device and the grain tank. An exhaust side connection pipe is connected to an exhaust port provided to an upper part of the DPF unit 40. The exhaust side connection pipe is arranged at a position in front of a first grain lifting device in parallel to the first grain lifting device. The DPF unit 40 is covered with the covering body. An opening A is formed at a lower left part of the covering body, the lower left part facing a fan of a grading chamber.SELECTED DRAWING: Figure 5
