PROBLEM TO BE SOLVED: To effectively absorbe vibration and impact transmitted forward to a tractor body from a working machine side.SOLUTION: A connecting frame 6 is connected to the rear end of a hitch mechanism 5 whose front part is directly connected to a tractor body 2, and the working machine 9 is attached on the connecting frame 6. An upper connection part 7 and a pair of right and left lower connecting parts 8, each removably engage with an upper engaging part 10 and a pair of right and left lower engaging parts 11 of the working machine S, are formed on the connecting frame 6. At least one of the upper connection part 7 and the lower connecting parts 8 are formed to be a connecting body F formed separately from the connecting frame 6, the connecting body F is attached longitudinally-movably to the connecting frame 6, and a buffer mounting device C energizing the working machine S in the rear direction against forward-directional movement thereof is set between the connecting body F and the connecting frame 6.COPYRIGHT: (C)2009,JPO&INPIT【課題】 作業機側からトラクタ車体への前方向の振動、衝撃を効果的に吸収できるようにする。【解決手段】 前部がトラクタ車体2に連結された直装ヒッチ機構5の後端に連結枠6を連結し、この連結枠6に作業機9を装着する。連結枠6には、作業機Sの上係合部10及び左右一対の下係合部11とそれぞれ係脱自在に係合する上連結部7及び左右一対の下連結部8とを設ける。上連結部7及び下連結部8の少なくとも一方は連結枠6と別個に形成した連結体Fに形成し、この連結体Fを連結枠6に前後移動可能に装着し、かつ連結枠6との間に作業機Sの前方向移動に対して後方向に付勢する緩衝装着具Cを設ける。【選択図】図1
