PROBLEM TO BE SOLVED: To dissolve the reduction of threshing performance by positively conveying treated materials entering into the internal space of a threshing cylinder to the rear end of the threshing cylinder and performing dust-discharging treatment.SOLUTION: Supporting plates (10, 11) supported by the front part and rear part of the threshing cylinder shaft (7) respectively, a plurality of supporting frames (12) including threshing teeth (13) are supported between supporting plates (10, 11) on the front and rear in the threshing cylinder (3) by taking intervals circumferentially, and installing a conveying screw (14) between the threshing cylinder shaft (7) and the supporting frames (12) to convey the treated materials entering into the internal space of the threshing cylinder (3) surrounded by the plurality of supporting frames (12) towards the rear end side of the threshing cylinder. Also, at the rear end side of a screw shaft (15) including the conveying screw (14), a taper part (16) having the larger outer diameter by going to the more rear end side is installed. Further, at the rear end side of the conveying screw (14), a spattering plate (17) for spattering out the treated materials in centrifugal direction is installed.COPYRIGHT: (C)2013,JPO&INPIT【課題】扱胴の内部空間に入り込んだ処理物を扱胴後端まで積極的に移送して排塵処理し、脱穀性能の低下を解消する。【解決手段】扱胴軸(7)の前部及び後部に支持板(10,11)を夫々支持し、該前後の支持板(10,11)間には扱歯(13)を備えた複数の支持フレーム(12)を扱胴(3)の周方向に間隔を置いて支持させ、前記扱胴軸(7)と支持フレーム(12)との間には、該複数の支持フレーム(12)によって囲われた扱胴(3)の内部空間に入り込む処理物を扱胴後端側に向けて移送する移送螺旋(14)を設ける。また、移送螺旋(14)を備える螺旋軸(15)の後部に、後端側ほど外径が大きくなるテーパ部(16)を設ける。また、移送螺旋(14)の後端側に、処理物を遠心方向に跳ね出す跳出板(17)を設ける。【選択図】 図1
