PROBLEM TO BE SOLVED: To regulate the transplanting depth of a seedling by a seedling transplanting device so as to be uniform without lifting or lowering the seedling-transplanting device even if right and left land-leveling rotors level a disordered muddy soil surface while being lifted and lowered.SOLUTION: A seedling transplanter is equipped with the seedling-transplanting device through a lifting and lowering link device at the rear side of a traveling car body. The seedling-transplanting device has the land-leveling rollers for making the muddy soil surface even by land-leveling of the muddy soil surface of a field, and is constituted so that the power may be transmitted from a rotor-driving shaft of a rotor-driving case through an outer shaft, and an inner shaft and a joint fitted in the outer shaft to the transmission case. Each of right and left attaching shafts is connected to driving shafts protruded in the right and left directions from the transmission case respectively so that the attaching shafts may integrally rotate with the land-leveling rotors, and the outer shaft and the inner shaft may be slid by the upper and lower movement of the transmission case. The attaching levers (67a and 67b) of a land-leveling roller-supporting frame (68) are hung through a linear sliding mechanism (A) in the rear-tilted upper direction between a traveling car body and the seedling-transplanting device.COPYRIGHT: (C)2010,JPO&INPIT【課題】 本発明では、左右整地ロータが乱れた泥土面を昇降しながら整地しても苗植付装置が昇降すること無く苗植付装置の苗植え付け深さが均等になるようにすることが課題である。【解決手段】 走行車体の後側に昇降リンク装置を介して苗植付装置を装着した苗植機において、苗植付装置には圃場の泥土面を整地して均す整地ロータを設け、ロータ駆動ケースのロータ駆動軸から外軸及び該外軸に嵌合する内軸及び継手を介して伝動ケースへ伝動する構成とし、該伝動ケースから左右に突出する駆動軸に左右それぞれの取付軸を連結し、該取付軸と整地ロータが一体で回転し、伝動ケースの上下動により外軸と内軸がスライドする構成とし、走行車体と苗植付装置の間で、整地ロータ支持フレーム(68)の取付杆(67a,67b)を、後倒れ上方への直線的なスライド機構(A)を介して吊下げてなる。【選択図】 図1
