PROBLEM TO BE SOLVED: To improve rigidity of a part to which a locking apparatus is attached without arranging a specific reinforcing member in a combine harvester equipped with the locking apparatus, which has a constitution that a suction and dust discharge fan for sucking admixtures separated and isolated by a separation part and discharging them out of a machine and a cutter apparatus for cutting waste straws conveyed from a threshing part through a waste straw conveying apparatus are connectably installed longitudinally, the cutter apparatus is openably and closably pivoted with one end of right and left as a fulcrum and the cutter apparatus is fixed in a closed state on the opening and closing end side of the cutter apparatus.SOLUTION: When a fixing device 81 for fixing the openably and closably pivoted cutter apparatus 12 in a closed state, the fixing device 81 is attached to a support member 86 for supporting the dust discharging fan 9 on a threshing sidewall 92.COPYRIGHT: (C)2009,JPO&INPIT【課題】選別部で選別分離した夾雑物を吸引して機外に排出する吸引排塵ファンと、脱穀部から排藁搬送装置を介して搬送される排藁を切断するカッタ装置とを前後に連設し、更にカッタ装置を左右一端側を支点として開閉自在に枢設すると共に、カッタ装置の開閉端側において当該カッタ装置を閉じた状態で固定するロック装置を設けたコンバインにおいて、前記ロック装置を装着する部位の剛性を特別な補強部材を設けることなく向上させる。【解決手段】開閉自在に枢設したカッタ装置１２を閉じた状態で固定するための固定具８１を設けるにあたり、この固定具８１を、前記排塵ファン９を脱穀側壁９２に支持する支持部材８６に装着可能に構成した。【選択図】図６
