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 forming a connected state of the implement with the linking frame.SOLUTION: The power-supplying circuit for an implement-linking device connects a male connector 72 with a 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 by installing the male connector 72 in one of a linking frame-side harness 67 and an implement-side harness 68, and installing the female connector 71 connectable with the male connector 72 in the other. A switch circuit 101 for the electric source is installed between 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 the switch circuit 101 for the electric source by detecting the connection of the implement 12 with the linking frame 11 is also installed.COPYRIGHT: (C)2012,JPO&INPIT【課題】 連結枠に作業機を連結状態に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】 連結枠側ハーネス67と作業機側ハーネス68との一方に雄コネクタ72が設けられ、他方に前記雄コネクタ72と結合可能な雌コネクタ71が設けられ、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とが結合す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、作業機12が連結枠11に連結されたことを検出して電源用スイッチ回路101を閉じる連結検出センサ108が設けられている。【選択図】図1
