PROBLEM TO BE SOLVED: To provide a crop space-changing device which can widely and simply change crop spaces from a sparsely planting state to a densely planting state.SOLUTION: The crop space-changing device includes a crop space case 47 independent of a travel mission case, and an input shaft 48, an output shaft 49, an intermediate shaft 65, and an idling shaft 70 are arranged in the crop space case 47. A Gear group is attached to the shafts 48, 49, 65, 70. A gear 71 disposed on the idling shaft 70 is move-operated to the first operation shaft 51 through the first lever 81. Gears 66, 67 disposed on the intermediate shaft 65 are slide-operated to the second operation shaft 52 through the second lever 82. The combination of the gears can variously be developed by move-operating both the levers 81, 82, and the crop space-changing device can therefore correspond to wide demands from a sparsely planting state to a densely planting state.COPYRIGHT: (C)2012,JPO&INPIT【課題】株間を疎植から密植まで巾広く簡単に変更できる株間変更装置を提供する。【手段】株間変更装置は走行ミッションケースとは独立した株間ケース47を有しており、株間ケース47に入力軸48,出力軸49、中間軸65、アイドル軸70が配置されており、これら軸48,49,70にギア群を取付けている。アイドル軸70に設けたギア71は第1レバー81を介して第1操作軸51で移動操作され、中間軸65に設けたギア66,67は第2レバー82を介して第2操作軸52でスライド操作される。両レバー81,82を移動操作することでギアの組み合わせを多彩に展開できるため、1第の株間変更装置で疎植から密植まで幅広い要望に対応できる。【選択図】図15
