PROBLEM TO BE SOLVED: To reliably connect with a transmission system of a mid-mount type working device by a climbing over and forward movement.SOLUTION: A working device connection structure for a riding type working vehicle comprises an engaging connection mechanism B and a parallel linkage mechanism C. The engaging connection mechanism B is provided so that right and left rear links 24 of a linkage mechanism 22 and right and left auxiliary links 37 adjacent to the linkage mechanism in a back and forth direction are pivotally connected with a car body frame 1, and in accompany with a climbing over and forward movement of right and left front wheels 4 which climb over a mid-mount type working device 21, engaging parts 64 of the respective rear links 24 are guided to engage and connect with parts 45A to be engaged of the working device 21. The parallel linkage mechanism C is provided so that a car body side output shaft 68 engaged with an input shaft 47 of the working device 21 to transmit power or shut off the transmission is rotatably supported by a holder 69, free end parts of the right and left rear links 24 and free end parts of the pair of right and left auxiliary links 37 are connected through the holder 69, and hoisting of the output shaft 68 is allowed while keeping a prescribed fitted attitude of the output shaft 68 with respect to the input shaft 47.COPYRIGHT: (C)2014,JPO&INPIT【課題】乗り越え前進走行によるミッドマウント式の作業装置に対する伝動系の接続を確実に行えるようにする。【解決手段】車体フレーム1に、リンク機構22の左右の後リンク24と、それらに前後方向で近接する左右の補助リンク37とを枢支連結し、左右の前輪4がミッドマウント式の作業装置21を乗り越える乗り越え前進走行に伴って、各後リンク24の係合部64を作業装置21の被係合部45Aに案内して係合連結する係合連結機構Bと、作業装置21の入力軸47に断続可能に嵌合する車体側の出力軸68を回転可能に支持するホルダ69とを備え、ホルダ69を介して左右の後リンク24の遊端部と左右一対の補助リンク37の遊端部とを連結して、出力軸68を入力軸47に対する所定の嵌合姿勢に維持しながら出力軸68の昇降を許容する平行リンク機構Cを構成した。【選択図】図4
