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 rocking restriction mechanism C. The engaging connection mechanism B is provided so that right and left rear links 24 of a linkage mechanism 22 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 climb over a mid-mount type working device 21, engaging parts 64 of the respective right and left rear links 24 are engaged and connected with parts 45A to be engaged of the working device 21. The rocking restriction mechanism C is provided so that a car body side output shaft 68 consists of a cylinder shaft including a diameter-expansion guidance part 68A which guides an input shaft 47 of the working device 21 to inside thereof, the right and left rear links 24 is arranged to rise forward and rock when disengaged with the input shaft 47, and when moving forward after right and left front wheels 4 climb over the working device 21, the rising forward and rocking of the output shaft 68 is prevented from a prescribed rising-forward attitude to position an engaging start end part of the input shaft 47 in a guidance region of the diameter-expansion guidance part 68A.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を枢支連結し、左右の前輪4が作業装置21を乗り越える乗り越え前進走行に伴って、左右の後リンク24の係合部64を作業装置21の被係合部45Aに係合連結する係合連結機構Bを備え、車体側の出力軸68を、作業装置21の入力軸47を内部に案内する拡径案内部68Aを備えた筒軸で構成し、かつ、入力軸47との嵌合解除に伴って前上がり揺動するように左右の後リンク24に装備し、左右の前輪4が作業装置21を乗り越えた後の前進走行時に、拡径案内部68Aの案内領域内に入力軸47の嵌合始端部が位置するように出力軸68の所定の前上がり姿勢からの前上がり揺動を阻止する揺動制限機構Cを備えた。【選択図】図4
