Balance weight buffering type height limiting frame

The invention relates to a balance weight buffering type height limiting frame, and belongs to the field of highway facilities. The balance weight buffering type height limiting frame comprises stand columns separately standing on the two sides of a highway, two guide rails are fixed to the upper ends of the two stand columns respectively and are parallel, and a height limiting rod is arranged in the two guide rails. A first pulley and a second pulley are arranged on the outer sides of the guide rails respectively, and the first pulley is located in front of the original position of the height limiting rod. One end of a steel cable is fixed to the height limiting rod, and the other end of the steel cable winds across the first pulley and the second pulley and then is connected with a balance weight. The balance weight is arranged in a deep well below the second pulley, and the gravity of the balance weight is used for providing buffer for the height limiting frame, so that direct collision between vehicles and the height limiting frame is avoided, damage to the height limiting frame and the vehicles is reduced, and personal safety of drivers is guaranteed.