PROBLEM TO BE SOLVED: To provide an agricultural work vehicle having a simplified structure.SOLUTION: The agricultural work vehicle 1 has a drive-side gear 36 having protrusions and recesses 35 and a follower-side gear 38 having protrusions and recesses 37 engaging with the protrusions and recesses 35 of the drive-side gear 36. The drive-side gear 36 has a fixed engaging receptor 43 having an engaging protrusion. The follower-side gear 38 has a fixed engaging member 44 having an engaging face engaging with the engaging protrusion. The engaging face is positioned opposite to the engaging protrusion by the rotation of the follower-side gear 38 according to the rotation of the drive-side gear 36. In this state, the rotation of the follower-side gear 38 is restricted by the engagement of the engaging face with the engaging protrusion.COPYRIGHT: (C)2009,JPO&INPIT【課題】構成の簡素化を図ることができる農作業機を提供する。【解決手段】農作業機1は、凹凸部35を有する駆動側歯車36と、駆動側歯車36の凹凸部35と噛合する凹凸部37を有する従動側歯車38を備える。駆動側歯車36には、係合受凸部を有する係合受体43を固設する。従動側歯車38には、係合受凸部と係合する係合面部を有する係合体44を固設する。駆動側歯車36の回動に基づく従動側歯車38の回動によって係合面部が係合受凸部と対向した状態になる。この状態時には、係合面部と係合受凸部との係合により、従動側歯車38の回動を規制する。【選択図】図1
