Reel groove jumping prevention structure, clothes airing machine power system and clothes airing machine

The utility model provides a reel groove jumping prevention structure, a clothes airing machine power system and a clothes airing machine, the reel groove jumping prevention structure is arranged on a reduction gearbox shell and comprises a column shaft and a roller connected to the column shaft in a sleeving mode, and the roller is in clearance fit with the column shaft and can rotate relative to the column shaft; the axis of the column shaft and the axis of the roller are parallel to the axis of the reel in the reduction gearbox, and the gap between the surface of the roller and the surface of the reel in the reduction gearbox is smaller than the outer diameter of the steel wire rope. The roller is arranged on the side face, located on the reel, of the reduction gearbox to reduce the assembling gap between the reel and the reduction gearbox shell, the gap between the outer wall of the roller and the outer wall of the reel is limited to be smaller than the outer diameter of the steel wire rope, and therefore