RIDING RICE TRANSPLANTING MACHINE

PROBLEM TO BE SOLVED: To provide a wheel trace erasing device that can adjust a leveling plate at a proper vertical position while maintaining a basic attitude of the leveling plate, even if an exclusive vertical position adjustment mechanism is not provided.SOLUTION: A planting machine 3 of a riding rice transplanting machine 1 includes a wheel trace erasing device 20 for erasing a wheel trace of a traveling machine body 2. The wheel trace erasing device 20 includes a leveling plate 24 for erasing the wheel trace, a supporting bracket 25 for supporting the leveling plate 24, a parallel linkage mechanism 26 for supporting the supporting bracket 25 in a vertically swinging manner and changing the vertical position of the leveling plate 24 according to the turning operation of a float connecting shaft 22 by a planting depth adjustment lever 17, and a pressing force adjustment mechanism 30 for adjusting the pressing force of the leveling plate 24 to a paddy field.SELECTED DRAWING: Figure 8 【課題】専用の上下位置調節機構を設けなくても、整地板の基本姿勢を維持しながら、整地板を適正な上下位置に調節できる車輪跡消し装置を実現する。【解決手段】乗用田植機１の植付作業機３は、走行機体２の車輪跡を消す車輪跡消し装置２０を備え、車輪跡消し装置２０は、車輪跡を消す整地板２４と、整地板２４を支持する支持ブラケット２５と、支持ブラケット２５を上下揺動可能に支持するとともに、植付深さ調節レバー１７によるフロート連結軸２２の回動操作に応じて整地板２４の上下位置を変更する平行リンク機構２６と、田面に対する整地板２４の押圧力を調節する押圧力調節機構３０と、を備える。【選択図】図８