COMBINE

To solve the problem of a conventional structure in which a cylindrical winding prevention body is provided at an outer periphery of an elevator drive shaft, so that grain culms are wound around the winding prevention body.SOLUTION: A combine including a table 14 connected to a threshing device 3 has a configuration in which an engine's drive rotation is input to an elevator drive shaft 16. A transportation chain 23 is stretched between a drive sprocket 19 fixed to the elevator drive shaft 16 and a transportation drum 20. A winding prevention body 30 is provided at an outer periphery of the elevator drive shaft 16 between right and left drive sprockets 19. Outside covers 31 are provided between an external end surface of the winding prevention body 30 and inner surfaces of the drive sprockets 19. On an inner surface of the drive sprocket 19 is provided an insertion groove 45 into which an outside end surface of the outside cover 31 invades when the outside cover 31 is attached. On the drive sprocket 19's inner surface around the insertion groove 45, a taper part 46 whose height increases toward the insertion groove 45 is provided over the entire circumference.SELECTED DRAWING: Figure 3 【課題】従来、エレベーター駆動軸の外周に筒状の巻き付き防止体を設けた構成のため、、巻き付き防止体に穀稈が巻き付くという課題がある。【解決手段】テーブル１４を脱穀装置３に接続したコンバインにおいて、エレベーター駆動軸１６にはエンジンの駆動回転が入力される構成とし、エレベーター駆動軸１６に固定した駆動スプロケット１９と搬送用ドラム２０との間に搬送チェン２３を掛け回し、左右の駆動スプロケット１９間のエレベーター駆動軸１６の外周には巻付き防止体３０を設け、巻付き防止体３０の外端面と駆動スプロケット１９の内面との間には外側カバー３１を設け、駆動スプロケット１９の内面には外側カバー３１を取り付けた際に外側カバー３１の外側端面が食い込む挿入溝４５を設け、挿入溝４５の周囲の駆動スプロケット１９の内面には挿入溝４５に向かって高くなるテーパー部４６を全周に亘って設けたコンバイン。【選択図】 図３