PROBLEM TO BE SOLVED: To provide a root crop harvester which can harvest and convey crops regardless of a harvesting speed, and making residual leaves hardly remain in crops.SOLUTION: A root crop harvester is constituted by: installing a pulling and conveying device 24 for holding stem and leaf portions of crops and pulling out and conveying in a travel vehicle body； installing a stem and leaf cutting device 61 cutting stem and leaf portions h of crops in conveyance； installing a removing and conveying device 76 conveying while removing residual leaves hr remaining in the crops below the stem and leaf cutting device 61； constituting the stem and leaf cutting device 61 by a pair of cutting members 60L,60R facing a conveyance route of the pulling and conveying device 24； installing a moving device 604 moving one of the cutting members 60L,60R in a machine body rear direction； installing a vehicle speed detection member for detecting a travel speed of a travel vehicle body； and installing a control device 200 moving to a machine body side the cutting members 60L,60R corresponding by operating the moving device 604 when the vehicle speed detection member detects a vehicle speed of equal to or more than a specified value.SELECTED DRAWING: Figure 14COPYRIGHT: (C)2020,JPO&INPIT【課題】 収穫速度にかかわらず作物を収穫搬送できると共に、作物に残葉が残りにくい根菜類収穫機を提供すること。【解決手段】 走行車体に作物の茎葉部を挟持して引き抜くと共に搬送する引抜搬送装置２４を設け、搬送中の作物の茎葉部ｈを切断する茎葉切断装置６１を設け、茎葉切断装置６１の下方に作物に残る残葉ｈｒを除去しながら搬送する除去搬送装置７６を設け、茎葉切断装置６１は、引抜搬送装置２４の搬送経路に臨む一対の切断部材６０Ｌ，６０Ｒで構成し、切断部材６０Ｌ，６０Ｒのどちらか一方を機体後方向に移動させる移動装置６０４を設け、走行車体の走行速度を検知する車速検知部材を設け、車速検知部材が所定値以上の車速を検知すると移動装置６０４を作動させて対応する切断部材６０Ｌ，６０Ｒを機体側に移動させる制御装置２００を設けて構成する。【選択図】 図１４
