PROBLEM TO BE SOLVED: To provide a threshing apparatus improving both the accuracy and efficiency of threshing operation by solving the problem of effecting harvest loss as grain culms on a swing separatory shelf are ejected out of the threshing apparatus.SOLUTION: The threshing apparatus is such that: a first dust exhaust port on the left side of the rear end of an exhaust dust treatment chamber 18 is furnished with a first exhaust guide plate 29 with a first slope surface 29a allowing exhaust dust discharged via the first dust exhaust port to fall down on the farm after the exhaust dust is guided under flowing down rearward on the right side and a second exhaust guide plate 24 including a second dust exhaust port on the right side of the rear end of the exhaust dust treatment chamber 18 is furnished with a second slope surface 24a allowing exhaust dust discharged via the second dust exhaust port to fall down on the farm after the exhaust dust is guided under flowing down rearward on the right side, and a third slope surface 24b allowing exhaust dust discharged via the second dust exhaust port to fall down on the farm after the exhaust dust is guided just rearward of the threshing apparatus 7.COPYRIGHT: (C)2010,JPO&INPIT【課題】揺動選別棚上の穀粒が脱穀装置の外部へ排出され収穫損失となる問題を解決し、脱穀作業の精度及び能率を向上させる。【解決手段】排塵処理室18の後端左側部に設けた第1排塵口に、第1排塵口から排出される排塵物を右側後方へ流下案内して圃場面へ落下させる第1傾斜面29aを備えた第1排出案内板29を設け、排塵処理室18の後端右側部に設けた第2排塵口に、第2排塵口から排出される排塵物を右側後方へ流下案内して圃場面へ落下させる第2傾斜面24aと、第2排塵口から排出される排塵物を脱穀装置7の直後方へ流下案内して圃場面へ落下させる第3傾斜面24bとを備えた第2排出案内板24を設ける。【選択図】図6
