PROBLEM TO BE SOLVED: To solve the problem that since a work for raising a rear cover is the work for springing up the rear cover at the rear part of a tractor, the work requires a working power, is not suitable for a woman and accompanies some risk.SOLUTION: This tractor installed with a rotary implement 25 at the rear part of a machine body as capable of being lift up and down is provided by installing a main cover 30 covering the upper surface of a plowing part of the rotary implement 25 as capable of rotating in front and rear direction by centering around the core of the plowing part and a rear cover 31 covering the rear direction of the plowing part as freely and vertically rotatable, equipping handle rods 32a, 32b moved as elongating and contracting by the operation of an upper end adjusting handle 32 at the frame part of the rotary implement 25, and using the rotary operation handle of the main cover 30 both for the springing up of the rear cover by linking the lower end sides of the handle rods 32a, 32b with the main cover 30 as freely demountable and jointly linking the adjusting handle rods 32a, 32b removed from the main cover 30 with the rear cover 31.COPYRIGHT: (C)2010,JPO&INPIT【課題】リヤカバー跳ね上げ作業は、トラクタ後部においてリヤカバーを持ち上げる作業となっており、労力が必要で婦女子には不向きであり、危険も伴う。【解決手段】機体後部にロータリ作業機25を昇降可能に設けるトラクタにおいて、該ロータリ作業機25の耕耘部の上面を覆うメインカバー30を耕耘軸部中心に前後に回動可能に設け、耕耘部の後方を覆うリヤカバー31をメインカバーの後部に上下回動自在に設け、該ロータリ作業機25のフレーム部に上端の調整ハンドル32操作により伸縮作動するハンドル杆32a,32bを備え、このハンドル杆32a,32bの下端側を前記メインカバー30に着脱自在に連結し、メインカバー30から取り外した調整ハンドル杆32a,32bをリヤカバー31に連動連結することで、メインカバー30の回動操作ハンドルをリヤカバー跳ね上げに兼用する。【選択図】 図2
