PROBLEM TO BE SOLVED: To provide a walking type agricultural working machine which travels by hand pushing with a reduced pushing load while the engine stops, and which travels on the road efficiently at a high speed.SOLUTION: The walking type agricultural working machine includes a power transmission device which switches between the transmission route for driving only wheel axles, the transmission route for driving both the wheel axles and the tilling shaft, the transmission route for driving only the tilling shaft, and the transmission route for driving neither the wheel axles nor tilling shaft in the neutral state. The power transmission device includes an intermediate shaft 38 placed on the route of transmission to the wheel axles downstream of the transmission shaft 5 on the route of transmission, a shaft sleeve 41 inserted into the intermediate shaft 38 with free rotation and having the intermediate gear 41a at the end, the first speed gear 41b and the second speed gear 41c inserted into the shaft sleeve 41 so as to slide along the shaft. Switching on and off of the transmission route to the wheel axles is performed by shifting the first speed gear 41b and the second speed gear 41c.COPYRIGHT: (C)2013,JPO&INPIT【課題】エンジン停止時の押し荷重を軽減した手押し走行を行うと共に、路上走行を高速走行により能率よく行うことができる歩行型農作業機を提供する。【解決手段】車軸のみを駆動する経路と、車軸及び耕耘軸を駆動する経路と、耕耘軸のみを駆動する経路と、車軸及び耕耘軸のどちらも駆動しないニュートラル状態とに切換える動力伝動装置を備えた歩行型農作業機であって、前記動力伝動装置は、車軸への伝動経路上で、かつ伝動軸5よりも伝動経路下流側に配置された中間軸38と、該中間軸38に遊転自在に嵌挿されて端部に中間ギヤ41aを有するスリーブ41と、該スリーブ41に軸方向に摺動可能に嵌挿された1速ギヤ41bと2速ギヤ41cとを備え、該1速ギヤ41bと2速ギヤ41cとを移動させることで車軸への伝動経路の断接を切換えるように構成した。【選択図】図3
