PROBLEM TO BE SOLVED: To provide a rotary tilling device that can prevent mud from adhering to a hinge portion between a top cover and a rear cover without causing a large weight increase and cost increase.SOLUTION: A rotary tilling device includes a top cover for covering an upper part of a rotary tilling unit and a rear cover for covering a rear part of the rotary tilling unit. The upper end side of the rear cover is pivotally connected to the rear end side of the top cover through a horizontal pivot in a turnable manner. An elastic cover provided along a tilling unit side inner surface of the pivot is disposed between the pivot and the rotary tilling unit. This elastic cover is provided from the rear end side of the top cover over the upper end side of the rear cover. A front part is mounted in an inner surface of the tilling unit side of the rear end of the top cover, and a rear part is mounted in the inner surface of the tilling unit side of the upper end of the rear cover.COPYRIGHT: (C)2016,JPO&INPIT【課題】大きな重量アップ、コスト高とならずに、上部カバーと後部カバーとの間のヒンジ部分に泥土が付着するのを防止することができるロータリ耕耘装置を提供する。【解決手段】ロータリ耕耘部の上方を覆う上部カバーと、ロータリ耕耘部の後方を覆う後部カバーとを備え、前記後部カバーの上端側は上部カバーの後端側に左右方向の枢軸を介して回動自在に枢支連結されており、前記枢軸とロータリ耕耘部との間に、枢軸の耕耘部側内面に沿って設けられた弾性カバーを配置し、この弾性カバーは、上部カバーの後端側から後部カバーの上端側にわたって設けられていて、前部を上部カバーの後端の耕耘部側の内面に取り付けると共に後部を後部カバーの上端の耕耘部側の内面に取り付ける。【選択図】図1
