PROBLEM TO BE SOLVED: To enable a power source of a tractor body to be connected with a connection terminal at a linking frame side only after an implement is connected with a linking frame, and male and female connectors are connected.SOLUTION: The power-supplying circuit for an implement-linking device connects the connection terminal 81 connected to the linking frame-side or implement-side harness of a male connector 72, with the connection terminal 77 connected to the implement-side or linking frame-side harness of the female connector 71 by connecting the male connector 72 with the female connector 71 so as to be synchronous with the time when the linking frame 11 and the implement 12 have come to the linking position. A switch circuit 101 for the electric source is installed between the connection terminal of the connector of the linking frame-side harness 67 and the electric source for the tractor body 1, and a connection-detecting sensor 108 for closing a switch circuit 101 for the electric source by detecting the connection between connection terminals 81 and 77 of the male connector 72 and the female connector 71 is installed in the connector of the connection frame-side harness 67.COPYRIGHT: (C)2012,JPO&INPIT【課題】 連結枠に作業機を連結しかつ雌雄コネクタを結合して初めてトラクタ本体の電源と連結枠側の接続端子とが接続できるようにする。【解決手段】 連結枠11と作業機12とが連結位置に至たるときに連動して雄コネクタ72と雌コネクタ71とが結合して、雄コネクタ72の連結枠側又は作業機側ハーネスに接続された接続端子81と雌コネクタ71の作業機側又は連結枠側ハーネスに接続された接続端子77とが接続される作業機連結装置の電力供給回路であって、連結枠側ハーネス67のコネクタの接続端子とトラクタ車体1の電源との間に電源用スイッチ回路101が設けられ、連結枠側ハーネス67のコネクタに、雄コネクタ72と雌コネクタ71との接続端子81,77同士が接続したことを検出して電源用スイッチ回路101を閉じる結合検出センサ108が設けられている。【選択図】図1
