PROBLEM TO BE SOLVED: To increase the strength of a rear cover, reduce the number of part items and reduce costs simultaneously.SOLUTION: A rear cover 13 of a rotary 1 includes a pair of right and left rib-like plates 19 placed upright and in parallel at a predetermined interval to each other on the upper surface of the rear cover, a suspension rod connecting member 17 provided between the pair of right and left rib-like plates 19 and connected to a suspension rod 16, and a rib-like plate reinforcing member 20 to which the pair of right and left rib-like plates 19 are integrally connected. The suspension rod connecting member 17 is freely slidably connected to the suspension rod 16 freely vertically turnably provided on the rotary body side, and defines the lowering limit position of the rear cover 13 by engaging with an engagement member 18 provided at the tip side of the suspension rod 16. The rib-like plate reinforcing member 20 defines the lifting limit position of the rear cover 13 by making contact with the tip of the suspension rod 16.COPYRIGHT: (C)2014,JPO&INPIT【課題】リヤカバーの強度アップ、部品点数の削減及びコストダウンを同時に達成する。【解決手段】ロータリ1のリヤカバー13は、その上面に所定の間隔を存して並列状に立設される左右一対のリブ状プレート19と、左右のリブ状プレート19間に設けられて吊りロッド16に連結される吊りロッド連結部材17と、左右のリブ状プレート19を一体的に連結するリブ状プレート補強部材20と、を備えており、吊りロッド連結部材17は、ロータリ本体側に上下回動自在に設けられた吊りロッド16に対して摺動自在に連結されるとともに、吊りロッド16の先端側に設けられる係合部材18との係合によってリヤカバー13の下降限界位置を規定し、リブ状プレート補強部材20は、吊りロッド16の先端部との当接によってリヤカバー13の上昇限界位置を規定する。【選択図】図4
