PROBLEM TO BE SOLVED: To provide a cover apparatus of a rotary tiller preventing splash of mud in a rotary cover without adjusting moving position of a rear rotary cover by an operator in every time of the vertical movement of the rear cover caused by the change of the tilling depth in tilling operation.SOLUTION: The cover apparatus 18 of the rotary tiller is provided with a rotary cover 13 covering tillage tines, a rear cover 14 capable of contacting with a field face, and a rear side cover 15 covering the rear cover 14 and the rotary cover 13, wherein the rear side cover 15 is pivotably supported on the side plate 13b of the rotary cover, and an interlocking mechanism 16 is provided to make a bottom face of the rear side cover 15 turn to come in contact with the field face or come to adjacent to the field face in linking with the movement of the rear cover.COPYRIGHT: (C)2013,JPO&INPIT【課題】耕耘作業時において、耕耘深さが変化したことによって、リヤカバーが上下に回動しても、その都度、作業者がリヤロータリカバーの回動位置を調節しなくても、ロータリカバー内の泥土の飛散を防ぐことができるロータリ耕耘機のカバー装置を提供する。【解決手段】耕耘爪を覆うロータリカバー13と、圃場面と当接し得るリヤカバー14と、リヤカバー14とロータリカバー13とを覆うリヤサイドカバー15と、を備えたロータリ耕耘機のカバー装置18において、リヤサイドカバー15を、ロータリカバー側板13bに回動自在に支持させると共に、リヤサイドカバー15を、リヤカバーの回動に連動して、その底面が圃場面に接地又は近接するように回動させる連動機構16を備える。【選択図】図2
