The present invention relates to a coupling device for a tractor instrument and, more specifically, to a coupling device for a tractor instrument which allows easy attachment and detachment of a fixture, which is joined to the tractor instrument, to a mounting unit which is joined to the front end part of a loader. The present invention comprises: an attachment unit which is joined to the front end part of a loader and which has a mounting unit on both sides that has a joining part and a loop pin insertion groove respectively at the upper part and at one side of the lower part an fixture unit which is joined to the tractor instrument and which has a coupling part and a loop pin respectively at the upper part and at one side of the lower part in order to be fixed to the mounting unit a lock bundle which is joined to a rotary shaft at the interior of the mounting unit so as to be rotated and which binds and unbinds the loop pin that is inserted into the loop pin insertion groove so that the coupling device for a tractor instrument can lock or unlock the mounting unit to and from the fixture unit an adjustment lever which is joined to one end of the rotary shaft at one side of the exterior of the mounting unit and which rotates the rotary shaft a binding unit which has a first binding groove and a second binding groove that are spaced from each other for the binding of the adjustment lever in order to maintain a locking or unlocking status of the lock bundle at one side of the exterior of the mounting unit and an elastic member which binds the adjustment lever to either the first binding groove or the second binding groove.COPYRIGHT KIPO 2015본 발명은 작업기 연결장치에 관한 것으로, 더욱 상세하게는 작업기에 결합되는 장착구를 로더 선단에 결합되는 부착구에 손쉽게 탈부착시키도록 한 작업기 연결장치에 관한 것이다.이를 위해, 본 발명은 로더의 선단에 결합되고 상부와 하부 일측에 각각 결합부와 걸이핀삽입홈이 형성된 부착구를 양측에 각각 구비한 부착유닛과, 작업기와 결합되고 상기 부착구에 장착되도록 상부와 하부 일측에 각각 체결부와 걸이핀이 형성된 장착유닛과, 상기 부착유닛에 장착유닛을 록킹 또는 록킹해제시키는 작업기 연결장치에 있어서, 상기 부착구의 내측에 회전축으로 연결되어 회전되게 마련되고 상기 걸이핀삽입홈에 삽입된 걸이핀을 결
