PROBLEM TO BE SOLVED: To provide a conveying mechanism of a relaying conveyor capable of surely drawing and transporting a sweet potato vine and supplying to a feed roller of the shredding cutter by the relaying conveyor independently of remarkable variation of harvesting quantity of the sweet potato vine per unit time, in a sweet potato vine harvester having a shredding cutter immediately behind a relaying conveyor.SOLUTION: A pair of right and left vertical conveyor rollers 73a, 73b are placed at right and left sides of a roller conveyor-type relaying conveyor. Each vertical conveyor roller 73a, 73b has a spiral ridge 73h on the outer circumference, and the spiral direction of the spiral ridge 73h is to generate a press down force by normal direction rotation of the vertical roll. The vertical conveyor rollers 73a, 74a assist backward transfer of the sweet potato vine in the roller conveyor-type relaying conveyor and generate downward thrust (pushing force).COPYRIGHT: (C)2013,JPO&INPIT【課題】中継コンベアの直ぐ後方に細断カッターがある甘藷つる収穫機において、甘藷つるの単位時間当たりの刈り取り量の著しい変動に関わらず中継コンベアが甘藷つるを確実に引き込み、搬送し、細断カッターの送りローラに送り込めるように、中継コンベアの搬送機構の提供。【解決手段】ローラコンベア式中継コンベアの左右両側に左右一対の縦コンベアローラ73a,73bがあり、縦コンベアローラ73a,73bの外周に螺旋状突部73hがあり、螺旋状突部73hの螺旋方向が縦ロールの順方向回転で下方へ押し下げる力を生じる方向であり、縦コンベアローラ73a,74aによって、ローラコンベア式中継コンベア内の甘藷つるの後方への送りを助勢するとともに下方へのスラスト(押す力)を生じるようになっている。【選択図】図7
