Cooling device for casting nodular cast iron well lid

The utility model relates to the technical field of nodular cast iron well lids, and provides a cooling device for casting of a nodular cast iron well lid, which is convenient for double-sided spraying of the well lid, reduces the cooling time of the well lid and further improves the production efficiency of the well lid and comprises a bottom frame, a sliding frame is connected in the bottom frame in a sliding manner, and two fixing plates are fixedly connected to the top end of the sliding frame. Clamping frames are rotationally connected to the opposite ends of the two fixing plates correspondingly, first electric cylinders are installed in the two clamping frames correspondingly, the output ends of the two first electric cylinders penetrate through the clamping frames correspondingly and are fixedly connected with power frames, and the bottom ends of the two power frames are fixedly connected with two movable toothed belts correspondingly; and two power gears and two transmission gears are rotationally co