PROBLEM TO BE SOLVED: To provide a harvester for underground stem crops which allows efficient operation without causing a trouble such as interruption of operation by rolling a multi film in a movable part such as an uprooting conveyor during harvesting operation.SOLUTION: In the harvester for the underground stem crops including the uprooting conveyor 3 obliquely installed from the traveling forward direction in a rising state toward the end, nipping and uprooting leaves and stems of the underground stem crops, and carrying out transporting to the rear, there is used the harvester for the underground stem crops in which a cylindrical roller 90 having a rotating shaft in the horizontal direction of crossing the traveling direction at right angles is installed in a position at the rear of the front end of a lower position of the uprooting conveyor 3, in a front position of a stem and leaf cutting part 4, and in a position which does come in contact with the ridge top surface. Furthermore, there is used the harvester for the underground stem crops in which the cylindrical roller 90 is rotated and driven at a higher speed than the operation traveling speed in the traveling direction.COPYRIGHT: (C)2013,JPO&INPIT【課題】収穫作業中に引抜きコンベアなどの可動部にマルチフイルムを巻き込むことにより作業が中断するなどの不具合がなく、効率よく作業ができる地下茎作物の収穫装置を提供する。【解決手段】走行前方向から後上がりに斜設され地下茎作物の茎葉部を挟持して抜き取るとともに後方に搬送する引き抜きコンベア3を有する地下茎作物の収穫機において、引き抜きコンベア3の下方位置の前方端より後方であり、茎葉切断部4より前方位置に、進行方向と直行する水平方向に回転軸を有する円筒状のローラ90を畝上面に接しない位置に設けた地下茎作物の収穫装置による。また、円筒状のローラ90は、作業走行速度より速い速度で進行方向に回転駆動されている前記の地下茎作物の収穫装置による。【選択図】 図2
