PROBLEM TO BE SOLVED: To provide a beet harvester for simultaneously digging up multiple rows of beet ridges that completely eliminates foreign objects such as stems and leaves by using disk-type coulters positioned between the ridges so as to prevent the foreign objects from getting stuck in respective dig up ports for the multiple rows of the beet ridges.SOLUTION: In a beet harvester for digging up multiple rows of ridges provided with dig up ports for simultaneously digging up multiple beet rows and rotary driving cleaners arranged in front of the dig up ports and for eliminating beet foliage and soil in a crosswise direction, a pair of left and right disk-shaped coulters rotatably provided at a lower part of a chassis frame in front of the rotary driving cleaners are arranged such that: shaft support points of the coulters are shifted from each other in a front and back direction to allow lower sides thereof to touch the ground in a linear or zigzag manner and outside disk surfaces of the left and right coulters form compound inclined surfaces that mutually open upward and backward.COPYRIGHT: (C)2014,JPO&INPIT【課題】複数列のビート畦列を同時に掘り取るビートハーベスタにおいて、畦間の円盤型コールターを利用して茎葉等の異物を隙間なく排除し、複数ビート畦列の各々の掘り取り口間に異物が詰まらないようにすることにある。【解決手段】複数ビート列を同時に掘り取る掘り取り口を有し、この掘り取り口の前方にビート列のビート茎葉・土砂を横方向へ排除する回転駆動クリーナーを設けた複数列掘り取り用ビートハーベスタにおいて、該回転駆動クリーナー前方の車台フレーム下方に回転可能に設けた左右対の円盤状コールターを、各々のコールター下辺が直線状または千鳥足状に接地するように軸支点前後位置をずらし、且つ、左右のコールターの外側円盤面が相互に上方及び後方へ向けて開いた複合傾斜面を構成するように配設する。【選択図】図4
