Cooling tower fan damping device

The invention belongs to the technical field of cooling tower fan damping, and discloses a cooling tower fan damping device which comprises a cooling tower body, and a fan is tightly attached to the top end of the cooling tower body; a hand wheel is manually rotated to drive a screw rod to rotate, two clamping plates are driven to move on the screw rod in the opposite directions, a vertical rod and a first spring which are installed in the middle of each set of trapezoidal sliding blocks can buffer vibration generated by the fan to reduce impact force during follow-up operation of the fan, each set of trapezoidal sliding blocks can extrude a breast board, and therefore the fan is prevented from being damaged. In the moving process that a set of clamping plates are gradually close to each other, a rubber column can push an inclined face abutting plate in real time, when an inclined face abutting rod is squeezed, the inclined face abutting rod can retract, a clamping elastic piece plate is made to be separated