PROBLEM TO BE SOLVED: To provide a threshing device including a cutting processing chamber which reduces a cutting load in cutting a waste culm, suppresses vibration and noise generated in cutting, and prevents deformation and generation of early wear of a blade and a receiving blade.SOLUTION: A rotation body 54 including plural blades 51 is arranged laterally in an upper part of a cutting processing chamber 50. Receiving blades 52 are arranged in a lower part of the cutting processing chamber 50. The blades 51 are arranged parallelly at predetermined intervals in a lateral direction of the rotation body 54 to form a blade group 58. The blade groups 58 are circumferentially arranged at predetermined intervals in a circumferential direction on an outer peripheral part of the rotation body 54. The blades 51 adjacent to each other in the lateral direction within the blade group 58 are arranged while being shifted from each other in the circumferential direction of the rotation body 54.SELECTED DRAWING: Figure 9COPYRIGHT: (C)2016,JPO&INPIT【課題】排桿の切断時の切断負荷を軽減して、切断時に生じる振動、騒音を抑制して、ブレードと受刃の変形及び早期摩耗の発生を防止することができる切断処理室を備えた脱穀装置を提供する。【解決手段】切断処理室(50)の上部に複数のブレード(51)を有する回転体(54)を横架し、切断処理室(50)の下部に受刃(52)を設け、ブレード(51)を回転体(54)の横方向に所定の間隔を隔てて並設してブレード群(58)を形成し、ブレード群(58)を回転体(54)の外周部に周方向に所定の間隔を隔てて周設し、ブレード群(58)内で横方向において隣接するブレード(51)を互いに回転体(54)の周方向にずらして設けることにより解決される。【選択図】図9
