PROBLEM TO BE SOLVED: To provide a rice transplanter having a rotary type seedling planting device capable of correcting defects such as twisting of power transmission elements attributable to functioning of a non-uniform velocity member.SOLUTION: A rice transplanter of the present invention includes a reverse phase torque generation member 130 for adding a reverse phase torque Tan which becomes a reverse phase to a rotation torque T of a transplant mechanism 8 on the basis of a non-uniform velocity rotation power. In an elongate planting transmission case 31 of a seedling planting device 2, the rice transplanter also includes a power take-off shaft 165 capable of transmitting power to an optional device attached to the seedling planting device 2, to make the power take-off shaft 165 become an element of the reverse phase torque generation member 130.COPYRIGHT: (C)2015,JPO&INPIT【課題】ロータリー式の苗植付装置を有する田植機において、不等速部材を機能させることに起因した伝動要素のねじれ等の不具合を是正する。【解決手段】本願発明の田植機は、不等速回転動力に基づく移植機構8の回転トルクTに対して、回転トルクTとは逆位相になる逆位相トルクTanを付加させる逆位相トルク発生部材130を備える。前記苗植付装置2における前後長手の植付伝動ケース31に、前記苗植付装置2に装着されるオプション装置に動力伝達可能な動力取出軸165を設け、前記動力取出軸165を前記逆位相トルク発生部材130の構成要素にする。【選択図】図21
