PROBLEM TO BE SOLVED: To provide a seedling transplanter restraining shaking of a movable part of a preliminary seedling frame even if a machine body rocks due to roughness or the like of a field, and stably loading loaded replenishment seedling.SOLUTION: The seedling transplanter includes: a traveling vehicle body traveling in the field a planting part for planting a plurality rows of seedlings by replenishment seedling at the rear thereof and the replenishment seedling frame for storing a plurality of replenishment seedlings up and down in multistages on the side of the traveling vehicle body. The replenishment seedling frame is provided with a deployment support mechanism 11 for movablly supporting a plurality of seedling placing members 5a and 5b from the multistage storing position to front and rear serial deployment position, and a switching mechanism 14 for switching and holding the position within the movable range of the deployment support mechanism 11. The preliminary seedling frame is provided with an auxiliary placing member 16b for loading replenishment seeding through a support 16a above or below one or more seedling placing members 5a and 5b or one side, and also provided with an urging mechanism 15 for urging and restraining the plurality of seedling placing members 5a and 5b and the movable part of the deployment support mechanism 11.COPYRIGHT: (C)2013,JPO&INPIT【課題】圃場の凹凸等により機体が揺れても予備苗枠の可動部分の揺らぎが抑えられ、積み込んだ補給苗の安定積載が可能な予備苗枠を備えた苗移植機を提供する。【解決手段】苗移植機は、圃場走行可能な走行車体と、その後部で補給苗により複数条の苗株を植付ける植付部と、走行車体の側部で複数の補給苗を上下に多段格納する予備苗枠とからなり、この予備苗枠には、複数の苗載置部材5a,5bを多段格納配置から前後の直列展開配置までの範囲で可動支持する展開支持機構11と、この展開支持機構11の可動範囲でその配置を切替え保持する切替機構14を設けて構成され、上記予備苗枠は、1以上の苗載置部材5a,5bの上下又はいずれかの側に支柱16aを介して補給苗積載用の補助載置部材16bを備え、かつ、複数の苗載置部材5a,5bおよび展開支持機構11の可動部分を付勢拘束する付勢機構15を設けたものである。【選択図】図2
