PROBLEM TO BE SOLVED: To provide a thresher which can level treatment materials dropped from a shaking-screening rack to enhance screening performance, thus reducing the loss of grains.SOLUTION: The thresher having a feed chain (2) on one side of a threshing chamber (3) and having a shaking-screening rack (14) for receiving, shaking-transferring and simultaneously sieving-screening threshed treatment materials from the threshing chamber (3) under the threshing chamber (3) is characterized by disposing a discharged dust-sieving and screening rack (23) for receiving and sieve-screening the discharged treatment materials discharged from the final end side dust-discharging port (8) of the threshing chamber (3) above the shaking-screening rack (14), and disposing a guide plate (24) for guiding the treatment materials leaked from the discharged dust-sieving and screening rack (23) from a part on the side opposed to the feed chain (2)-disposed side in the shaking-screening rack (14) to a site on the feed chain (2)-disposed side, between the discharged dust-sieving and screening rack (23) and the shaking-screening rack (14) downward.COPYRIGHT: (C)2013,JPO&INPIT【課題】揺動選別棚上に落下してくる処理物を均平化し、選別性能を高めてロスの低減を図る。【解決手段】扱室(3)の一側にフィードチェン(2)を備え、扱室(3)の下方には、扱室(3)からの脱穀処理物を受け入れて揺動移送しながら篩い選別する揺動選別棚(14)を備え、扱室(3)終端側の排塵口(8)からの排塵処理物を受けて篩い選別する排塵篩い選別棚(23)を揺動選別棚(14)の上部に設け、排塵篩い選別棚(23)と下方の揺動選別棚(14)との間には、排塵篩い選別棚(23)から漏下する処理物を、揺動選別棚(14)におけるフィードチェン(2)を設けた側とは反対側の部位からフィードチェン(2)を設けた側の部位に向けて寄せるガイド板(24)を設ける。【選択図】 図2
