PROBLEM TO BE SOLVED: To simplify a connection structure of a cylinder mechanism for dumping with a collector and the periphery.SOLUTION: In the riding lawn mower, supporting frames 46 and 46 are erected at the back of a vehicle body, and an upper and lower pair of lifting links 60 and 62 are arranged right and left respectively of a collector 40 at these supporting frames 46 and 46, and vertical links 63 and 63 are connected with each of ends of right and left lifting links 60 and 62, a connection frame 67 which connects these right and left vertical links 63 and 63 is prepared, a collector 40 is prepared to be fixed at a dumping turn supporting point shaft 66 and 66 of the vertical links 63 and 63, a dumping cylinder mechanism 72 is prepared between the connection frame 67 and a floor part reinforcement frame 40b of the collector 40 in an expansionable and contractionable manner, and the dumping cylinder mechanism 72 is along a floor part of the collector 40 even in a shortening condition or a condition in which a piston part extends.COPYRIGHT: (C)2013,JPO&INPIT【課題】 ダンプ用シリンダ機構とコレクタとの接続構成及び周辺の簡素化を図る。【解決手段】 乗用芝刈機において、車体後部に支持フレーム46,46を立設すると共に、この支持フレーム46,46に上下一対の昇降リンク60,62をコレクタ40の左右に夫々配置し、左右の昇降リンク60,62の端部夫々に縦リンク63,63を連結し、これら左右の縦リンク63,63を連結する連結フレーム67を設け、縦リンク63,63のダンプ回動支点軸66,66にコレクタ40を固定して設け、前記連結フレーム67とコレクタ40の床部補強フレーム40bとの間に、ダンプ用シリンダ機構72を伸縮可能に設け、ダンプ用シリンダ機構72は短縮状態においてもピストン部が伸出す状態であってもコレクタ40の床部に沿う。【選択図】 図4
