PROBLEM TO BE SOLVED: To improve reliability of connection between power connectors in a coupling device for a working machine allowing a power connector on a coupling frame side and a power connector on the working machine side to be automatically connected when automatically connecting the working machine to the coupling frame liftably mounted at a rear part of a tractor vehicle body.SOLUTION: In the coupling device for a working machine, a power connector 41 in one side of the coupling frame 3 side or the working machine 4 side is supported so as to recede from a connection position to the other power connector 42, and an interlocking mechanism 98 is provided for making the one power connector 41 recede from the connection position by interlocking with the operation of the working machine 4 to move closer to the coupling frame 3, and making the one connector 41 advance to the connection position to connect with the other connector 42 when the working machine 4 is coupled to the coupling frame 3.COPYRIGHT: (C)2013,JPO&INPIT【課題】トラクタ車体の後部に昇降自在に装着された連結枠に作業機が自動連結される際に連結枠側の電源コネクタと作業機側の電源コネクタとが自動的に接続されるようにした作業機連結装置において、電源コネクタ同士の接続の信頼性の向上を図る。【解決手段】連結枠3側又は作業機4側の一方の電源コネクタ41を他方の電源コネクタ42に対する接続位置から後退可能に支持し、作業機4が連結枠3に接近する動作に連動して該一方の電源コネクタ41を前記接続位置から後退させ且つ作業機4が連結枠3に連結される時に該一方の電源コネクタ41を接続位置へと進出させて他方の電源コネクタ42に接続させる連動機構98を設ける。【選択図】図5
