PROBLEM TO BE SOLVED: To improve planting accuracy.SOLUTION: A seedling transplanter is provided with a traveling device, a seedling transfer part for transferring seedlings, and a seedling planter for planting the seedlings transferred to a planting supply position by the seedling transfer part into a farm field. The seedling planter comprises: a drive arm 34 rotated by a planting drive shaft 91 of a left-and-right direction a support link part 36 connected to the drive arm 34 through a front connection shaft 36a and inclined backward and downward and a link mechanism composed of a swing link 37 which is inclined backward and upward, and in which the front end part is connected through a rear connection shaft 36b of the rear end part of the support link part 36. A seedling planting gripper 31 supported in the rear part of the support link part 36 plants the seedlings to the farm field by being operated in a trace which is long in a fore-and-aft direction. An intermediate portion between the front connection shaft 36a and the rear connection shaft 36b of the support link part 36, and a rear side portion of the swing link 37 which is on the rear side from the rear connection shaft 36b are connected by a tension spring 160 for planting and energizing.COPYRIGHT: (C)2016,JPO&INPIT【課題】 本発明は、植付精度を向上させることを課題とする。【解決手段】 走行装置と、苗を搬送する苗搬送部と、苗搬送部によって植付供給位置へ搬送された苗を圃場に植付ける苗植付け装置とを設け、苗植付け装置は、左右方向の植付駆動軸91で駆動回転する駆動アーム34、駆動アーム34に前端部の前連結軸36aを介して連結された後下がり姿勢の支持リンク部36、並びに支持リンク部36の後端部の後連結軸36bを介して前端部が連結された後上がり姿勢の揺動リンク37で構成されるリンク機構を備え、支持リンク部36の後部に支持される苗植付け挟持具31を、前後に長い軌跡で作動させて苗を圃場に植付ける構成とし、支持リンク部36の前連結軸36aと後連結軸36bとの間の中間部分と、揺動リンク37の後連結軸36bよりも後側部分とを、植付付勢用引張スプリング160により連結した苗移植機とする。【選択図】図7
