PROBLEM TO BE SOLVED: To provide a root vegetable harvester capable of carrying out stable harvesting and traveling, while suppressing tilting to the right or the left of a machine body caused by ridge grooves, without causing side drop of an orbiting crawler, when harvesting root vegetables grown by high-ridge cultivation.SOLUTION: The root vegetable harvester is equipped with a traveling device 1 in an endless track type constituted, by winding on the supporting rotating wheels 3 to 6 the orbiting crawler 9, having a width size W reaching from the side edges of supporting rotating wheels 3 to 6 installed in a row to the outside of the machine body and an uprooting and conveying device P for uprooting the root vegetables vegetating in a field, and installed in right or left one side of the machine body traveling in the field by the traveling device 1. A front outside assistant wheel 11 is installed in the traveling device 1, on the outside of the machine body from the side edges of the supporting rotating wheels 3 to 6. The front outside assistant wheel 11 is arranged at a position regulated so that the distance L1 between the front outside assistant wheel 11 and the supporting rotating wheel 3 for grounding the orbiting crawler 9 to the field at the front side of the traveling device 1 becomes smaller than the distance L2 between the front outside assistant wheel 11 and the supporting rotating wheel 4 which adjoins the rear part of the supporting rotating wheel 3.COPYRIGHT: (C)2009,JPO&INPIT【課題】高畝栽培による根菜類の収穫に際して、周回履帯の側方脱落を招くことなく、畝溝による機体の左右傾斜を抑えて安定した収穫作業走行を可能とする根集類収穫機を提供する。【解決手段】根菜類収穫機は、列設された複数の支持転輪3~6にその側端よりも機体外側に及ぶ幅寸法Wを有する周回履帯9を巻回して構成する無限軌道式の走行装置1と、該走行装置1により圃場を走行する機体の左右一側に圃場に植生する根菜類を引き抜き機体後部へ搬送する引抜搬送装置Pとを備える根菜類収穫機において、前記走行装置1に支持転輪3~6の側端よりも機体外側に前外側補助輪11を設け、該前外側補助輪11は前外側補助輪11と走行装置1の前側で周回履帯9を圃場に接地させる支持転輪3との距離L1が前外側補助輪11と支持転輪3の後方に隣接する支持転輪4との距離L2よりも短くなる位置に配置したものである。【選択図】図1
