Concrete mixer

The utility model discloses a concrete mixer and relates to the technical field of concrete production. The device comprises a tank body, one side of the top of the tank body is fixedly connected with a square plate, the top of the square plate is fixedly connected with a connecting plate, the top of the connecting plate is fixedly connected with a placing box, the bottom of one side wall of the connecting plate is fixedly connected with a supporting plate, and the top of the supporting plate is provided with a moving assembly; the moving assembly comprises a first motor which is in threaded connection with the top of the supporting plate. Through the arrangement of a moving assembly, a leakage box and a placing box, the output end of a first motor drives a fixing plate to rotate, the fixing plate reciprocates an inclined rod, the inclined rod is rotationally connected with the moving plate through a rotating shaft, the reciprocating motion of the inclined rod drives the moving rod to slide horizontally, the