PROBLEM TO BE SOLVED: To reduce generation of vibration and noise in waste culm cutting by a blade and a receiving blade in a waste culm cutting processing device to enhance durability of the blade and receiving blade.SOLUTION: In a waste culm cutting processing device, a rotation body 54 mounting a plurality of blades 51 thereon is supported to rotate around an axial core in a right/left direction in an upper part of a cutting processing chamber cutting waste culms after threshing and a receiving blade is arranged in a lower part of the cutting processing chamber. A blade group is formed by arranging side by side the plurality of blades 51 mounted on an outer peripheral face of the rotation body 54 at intervals in the axial core direction of the rotation body 54. A plurality of the blade groups are arranged at intervals in a peripheral direction of the rotation body 54. The adjacent blades 51 in the same blade group are arranged while shifted to each other in the peripheral direction of the rotation body 54.SELECTED DRAWING: Figure 8COPYRIGHT: (C)2017,JPO&INPIT【課題】排稈切断処理装置におけるブレードと受刃による排稈切断時の振動や騒音の発生を少なくし、ブレードや受刃の耐久性を高める。【解決手段】脱穀後の排稈を切断する切断処理室の上部に、複数のブレード(51)を装着した回転体(54)を左右方向の軸心回りに回転自在に支持し、切断処理室の下部に受刃を設けた排稈切断処理装置であって、回転体(54)の外周面に装着される複数のブレード(51)を、この回転体(54)の軸心方向での間隔を有して並列させてブレード群を形成し、このブレード群を、回転体(54)の周方向での間隔を有して複数配置し、同一のブレード群内において隣接するブレード(51)どうしを、回転体(54)の周方向に位置をずらして設ける。【選択図】図8
