PROBLEM TO BE SOLVED: To cut a foliage portion at an appropriate position without causing a mulch film to be lifted up from a field surface during extracting of crops, causing a cutting blade of a foliage cutting machine to be damaged due to soil taken therein and causing the cutting blade to splash soil to a worker, so that harvesting of the crops and removing of the mulch film in subsequent work can be efficiently performed.SOLUTION: Provided is a root crop extracting machine in which, while lift-up devices 41 and 63 are lifting up foliage portions lodged on a ridge, an extracting/conveying device 20 holds and conveys back upward the foliage portions to extract root portions, and a foliage cutting device 54 provided in a lower part of the extracting/conveying device 20 cuts the foliage portions to leave the root portions in a field. The foliage cutting device 54 is provided with a grounding body 50 to maintain the ground height of the foliage cutting device 54 at a certain level or higher, the device 54 being floating-supported by a support frame 42 so as to being lifted and lowered with respect to a main frame 1.COPYRIGHT: (C)2014,JPO&INPIT【課題】本発明は、作物の引抜中にマルチフィルムを圃場面から浮き上がらせたり、茎葉切断装置の切断刃が土を噛みこんで破損したり、土を作業者に跳ね飛ばしたりすることなく、茎葉部を適切な位置で切除して、後作業での作物の収穫やマルチフィルムの剥ぎ取り作業を効率的に行えるようにすることを課題とする。【解決手段】畝上に倒伏した茎葉部を引起し装置41,63で引き起こしながらその茎葉部を引抜搬送装置20で挟持して後上方に搬送して球根部を引き抜き、引抜搬送装置20の下部に設ける茎葉切断装置54で茎葉部を切断して球根部を圃場へ放置する根菜類引抜作業機において、メインフレーム1に対して昇降ように支持フレーム42でフローティング支持した茎葉切断装置54に接地体50を設け、茎葉切断装置54の地上高を一定以上に維持する構成とする。【選択図】図3
