PROBLEM TO BE SOLVED: To facilitate a change operation of a tip unit for reaping crops in a cereal stalk reaping apparatus.SOLUTION: The cereal stalk reaping apparatus comprises a spindle reaper 61 which is laterally bridged with respect to a body 3, and rotates in a vicinity of a horizontal axis a rotation transformation mechanism 100 which is linked and concatenated to a terminal end of the spindle reaper 61 and a transmission shaft group which is installed in a longitudinal direction of the body 3 and linked and concatenated to an output side of the rotation transformation mechanism 100 to move a cutting blade of a reaping apparatus 270 from side to side. The transmission shaft group is configured to include a first transmission rod 110 whose lead end is connected to the rotation transformation mechanism 100 and a second transmission rod 220 which rotates in conjunction with the first transmission rod 110 via a predetermined power transmission mechanism that has a shaft center different from a shaft center of the first transmission rod 110. One end of the second transmission rod 220 is linked and concatenated to one end of the cutting blade via a linear conversion mechanism to move the cutting blade of the reaping apparatus 270 from side to side.COPYRIGHT: (C)2013,JPO&INPIT【課題】穀稈刈取装置において作物の刈り取りを行う先端のユニットの交換作業を容易化する。【解決手段】機体3に対して横架支承され、横向き軸心周りに回転する刈取主軸61と、刈取主軸61の終端に連動連接する回転変換機構100と、機体3の前後方向に配設され、回転変換機構100の出力側に連動連接することにより刈取装置270の刈刃を左右に往復駆動する伝動軸群と、を備え、前記伝動軸群は、回転変換機構100に始端を接続される第1伝動ロッド110と、第1伝動ロッド110とは軸心を異にしており所定の動力伝達機構を介して第1伝動ロッド110と連動して回動する第2伝動ロッド220と、により構成され、第2伝動ロッド220の一端が、直線変換機構を介して前記刈刃の一端と連動連接することにより刈取装置270の刈刃を左右に往復駆動する。【選択図】図13
