Blade angle adjusting device of air cooling fan

The invention discloses an air cooling fan blade angle adjusting device, a mounting assembly comprises a driving shaft and an impeller plate fixedly connected to the bottom of the driving shaft, the bottom of the impeller plate is fixedly connected with a mounting cylinder, and the bottom of the mounting cylinder is provided with a detachable cylinder cover. Under the driving of the driving shaft in the equipment, the blade body connected through the mounting assembly and the connecting assembly starts to rotate, and the impeller plate generates centrifugal force under the driving of the driving shaft, so that the centrifugal block in the connecting cylinder slides in the connecting cylinder, and the lead screw is driven to rotate in the ball bearing; therefore, the rotating cylinder provided with the blade body can be driven to rotate, the inclination angle of the blade body can be adjusted according to the centrifugal force of the impeller plate, when the driving shaft stops, the blade body can be restored