PROBLEM TO BE SOLVED: To maintain and clean a reaper 3 for reaping cereal culms and conveying, and a thresher 4 for threshing the reaped cereal culms easily.SOLUTION: The reaper 3 for reaping the cereal culms and conveying, and the feed chain 5 of the thresher 4 for threshing the reaped cereal culms are constituted by installing a reaping rotation-supporting device 15 for supporting to the outside of one side of its working state and non-working state as freely rotatable and a chain rotation-supporting device 7 individually, and also installing (i) a reaping rotation-supporting fulcrum part of the reaper 3 at the front side in the vicinity of (ii) a chain rotation fulcrum part of the feed chain. Also, the chain rotation-supporting device 7 is attached to the reaping rotation-supporting device 15 and installed by forming as one unit. Further, (i) the reaping rotation-supporting fulcrum part and (ii) the chain rotation-supporting fulcrum part are installed as crossing as a side view, and (iii) the rotation center of the beginning end of conveyance of the feed chain 5a is installed as positioned at the rear part from the upper end position of (ii) the chain rotation fulcrum part.COPYRIGHT: (C)2006,JPO&NCIPI【課題】穀稈を刈取り移送する刈取機3と、刈取り穀稈を脱穀する脱穀機4とのメンテナンス、及び清掃を用意にしようとするものである。【解決手段】穀稈を刈取り移送する刈取機3と、刈取り穀稈を脱穀する脱穀機4のフィードチェン5aとは、作業状態と、非作業状態の一方側の外側へ回動自在に支持する刈取回動支持装置15とチェン回動支持装置7とを個部に設け、刈取機3の刈取回動支持支点部(イ)をフィードチェン5aのチェン回動支点部(ロ)の近傍の前側へ設けた構成である。又、刈取回動支持装置15へチェン回動支持装置7を装着して、一体に形成して設けた。更に刈取回動支持支点部(イ)と、チェン回動支点部(ロ)とは、側面視交差させて設け、フィードチェン5aの移送始端の回転中心(ハ)は、チェン回動支点部(ロ)の上端部位置より、後部へ位置させて設けた構成である。【選択図】図1