Novel air door interlocking device

The utility model discloses a novel air door interlocking device which comprises a mounting plate arranged between two air doors, the middle of the mounting plate is rotationally connected with a fixed clamping plate, the fixed clamping plate is rotationally connected with the mounting plate through a rotating shaft, and a torsional spring is arranged at the position of the rotating shaft and connected with the fixed clamping plate. Interlocking device boxes are symmetrically mounted on the two sides of the fixed clamping plate and located on the lower portion of the mounting plate, fixed pulleys are arranged at the top end of the mounting plate and correspond to the interlocking device boxes, balance weight columns are arranged in the interlocking device boxes, and the top ends of the balance weight columns are connected with interlocking ropes, and the other ends of the interlocking ropes are connected with lug plates on the side edges of the air door after passing through the fixed pulleys; the end of the