Cooling device of heavy and medium plate rolling mill

The utility model discloses a heavy and medium plate rolling mill cooling device which comprises a rolling mill, a cooling box is arranged on one side of the rolling mill, a water storage tank is arranged below the cooling box, first electric push rods are arranged on the outer wall of the front portion and the outer wall of the rear portion of the cooling box respectively, and first telescopic arms are arranged on the opposite faces of the first electric push rods respectively. The other end of the first telescopic arm is connected with a limiting plate, and clamping grooves are formed in the opposite faces of the limiting plate correspondingly. According to the cooling device for the heavy and medium plate rolling mill, the hollow-out plates and the heavy and medium plate form an extrusion limiting structure, and therefore the situation that the heavy and medium plate is bent is avoided through the two sets of hollow-out plates in the cooling process; and the rotating disc and the motor box form a rotating