PROBLEM TO BE SOLVED: To provide a power transmission apparatus of a tending working machine that extends a distance in the progress direction between a drive shaft arranged on a mounting frame body ahead in the progress direction and a driven shaft at the side of a machine casing body, to that extent, reduce the expansion amount of a transmission shaft, smoothly performs swing actions in the right and left directions of the transmission shaft by the movement in the right and left directions of the machine casing body, smoothly performs the right and left movements of the machine casing body, reduces the folding angle of an universal coupling, smoothly performs power transmission and improves levee-shaping workability.SOLUTION: The transmission shaft 13f of a power transmission mechanism 13 having swing action in the right and left directions B by the right and left movements of the machine casing body 4 is arranged on an interference avoidance position D to be an upper position of a tending working mechanism 7.COPYRIGHT: (C)2013,JPO&INPIT【課題】進行方向前方の取付枠体に配設された駆動軸と機枠体側の従動軸との進行方向の距離を長く取ることができ、それだけ、伝動軸の伸縮量を小さくすることができ、機枠体の左右方向の移動による伝動軸の左右方向の振れ動作を円滑に行うことができ、機枠体の左右移動も円滑に行うことができ、自在継手の折曲角度も小さくできて動力伝動を円滑に行うことができ、整畦作業性を向上することができる。【解決手段】機枠体4の左右移動により左右方向Bに振れ動作する動力伝動機構13の伝動軸13fを、管理作業機構7の上方位置とする干渉回避位置Dに配設してなる。【選択図】図1
