PROBLEM TO BE SOLVED: To provide a threshing device in which the consumption energy required for threshing processing is suppressed and the threshing processing can be performed quickly.SOLUTION: A threshing device is characterized by: providing a threshing chamber cover (20) on the upper part of a threshing chamber (10) providing an inner cover (21) in an inner circumferential part of the threshing chamber cover (20) forming the inner cover (21) from an upper plate (21A) positioned in the direct upper part of a threshing cylinder (12), a left plate (21B) extending in the left lower side from the left part of the upper plate (21A), and a right plate (21C) extending in the right lower side from the right part of the upper plate (21A) providing multiple dust discharge guides (24) at predetermined intervals in the longitudinal direction in an inner circumferential part of the inner cover (21) detachably providing a circular arc-shaped top plate (22) for covering the upper part of the threshing cylinder (12) between the threshing cylinder (12) and the dust discharge guides (24) mounting the lower left part (23B) of the top plate (22) in the lower part of the left plate (21B) and mounting the right lower part (23C) of the top plate (22) in the lower part of the right plate (21C).SELECTED DRAWING: Figure 4COPYRIGHT: (C)2017,JPO&INPIT【課題】脱穀処理にかかる消費エネルギを抑制して、脱穀処理を迅速に行うことができる脱穀装置を提供する。【解決手段】扱室(10)の上部に扱室カバー(20)を設け、扱室カバー(20)の内周部に内カバー(21)を設け、内カバー(21)を扱胴(12)の直上部に位置する上板(21A)と、上板(21A)の左部から左下側に延在する左板(21B)と、上板(21A)の右部から右下側に延在する右板(21C)から形成し、内カバー(21)の内周部に、前後方向に所定の間隔を隔てて複数の排塵ガイド(24)を設け、扱胴(12)と排塵ガイド(24)の間に、扱胴(12)の上部を覆う円弧状の天板(22)を着脱自在に設け、左板(21B)の下部に天板(22)の左下部(23B)を装着し、右板(21C)の下部に天板(22)の右下部(23C)を装着することにより解決される。【選択図】図4
