PROBLEM TO BE SOLVED: To provide a combine harvester which is mounted with a grain tank 7 and a discharge auger 8, in which a bottom conveyor 6 is arranged on the inner bottom part of the grain tank 7, and the versatility of which is enhanced by enabling grains in the grain tank 7 to be efficiently transferred to the outside of a machine via the discharge auger 8 regardless of differences among kinds of the grains.SOLUTION: A longitudinal roof-like element 101 is provided above the bottom conveyor 76 in such an ascent/descent-adjustable manner as to shorten/lengthen an opening interval D between an inner surface of an inclined plate 7c of the bottom of the grain tank 7 and an lower edge of a canopy body 104. An operating lever body 115, provided on outer surface of the rear side plate 7b of the grain tank 7, and the roof-like member 101 are related to each other so that the roof-like member 101 can be lifted/lowered at two upper and lower stages in synchronization with an normal or reverse rotation operation around the common axis line A1 of the operation lever body 115 via a crank rod 102.COPYRIGHT: (C)2008,JPO&INPIT【課題】グレンタンク7と排出オーガ8とが搭載され、グレンタンク7の内底部に底コンベヤ76が配置されたコンバインにおいて、穀粒種の違いに拘らず効率よく、グレンタンク7内の穀粒を、排出オーガ8を介して機外へと移送可能にして、コンバインの汎用性を向上させる。【解決手段】底コンベヤ76の上方に、前後長手の屋根状部材101を、グレンタンク7底部の傾斜板7c内面と庇体104の下端縁との開口間隔Dを広狭変化させるように昇降調節可能に設ける。グレンタンク7の後ろ側板7b外面に設けた操作レバー体115と屋根状部材101とは、クランク杆102を介して、操作レバー体115における共通軸線A1回りの正逆回動操作に連動して屋根状部材101を上下2段階に昇降動させるように関連付ける。【選択図】図8
