PROBLEM TO BE SOLVED: To improve the assembling workability of a power transmission system to a ground leveling device 85 while employing a structure which can prevent breakage caused by an overload applied to the power transmission system to the ground levelling device 85, and to reduce costs by reducing the number of components.SOLUTION: A rice transplanter 1 comprises: a traveling machine body 2 mounted with an engine 5 a seedling planter 23 attached to a rear end side of the traveling machine body 2 a rear axle case 9 for supporting left and right rear wheels 4 and a ground leveling device 85 for leveling a planting paddy face. In the rear axle case 9, there are arranged a rear input shaft 242 to which the power of the engine 5 is transmitted, and a ground leveling drive shaft 243 which branches the power of the rear input shaft 242, and transmits it to the ground leveling device 85. A torque limiter 274 is arranged at the ground leveling drive shaft 243.COPYRIGHT: (C)2015,JPO&INPIT【課題】整地装置85への動力伝達系に作用した過負荷による破損を防止できる構造を採用しながら、整地装置85への動力伝達系の組付け作業性向上や、部品点数削減によるコスト抑制を図る。【解決手段】本願発明の田植機1は、エンジン5を搭載した走行機体2と、走行機体2の後端側に装着した苗植付装置23と、左右の後車輪4を支持するリヤアクスルケース9と、植付け田面を均す整地装置85とを備える。リヤアクスルケース9内部には、エンジン5の動力が伝達されるリヤ入力軸242と、リヤ入力軸242の動力を分岐して整地装置85に伝達する整地駆動軸243とを備える。整地駆動軸243にトルクリミッタ274を設ける。【選択図】図11
