Storable windproof unit and large-span windproof net structure and windproof method thereof

The invention discloses a storable windproof unit and a large-span windproof net structure and a windproof method thereof, and belongs to the technical field of windproof nets, the storable windproof unit comprises a flexible windproof net, towers arranged at intervals and bearing cables erected on the two towers; a horizontal pulley assembly is arranged on the tower on one side, and two vertical pulleys are arranged on the tower on the other side; the top edge of the flexible windproof net is slidably connected to the bearing cable through a plurality of hanging structures. The traction cable is arranged on the horizontal pulley assembly in a sleeving mode, and the two free ends of the traction cable extend, bypass the two vertical pulleys and are connected to the winding mechanism; the hanging structure close to the tower on one side is fixedly connected with the traction cable, and the winding mechanism rotates forwards and backwards to drive the flexible windproof net to be unfolded or folded. The large-s