Mechanical falling protector

The utility model discloses a mechanical falling protector which comprises a supporting rod and a rotor and further comprises a side beam connected with a vehicle carrying plate of parking equipment.The supporting rod is vertically arranged and used for bearing the vehicle carrying plate. The rotor is mounted on the support rod through a rotating shaft; the boundary beams are horizontally arranged, and the supporting rods penetrate through the holes in the boundary beams; the opening is positioned above the rotor; the rotor has a first working position and a second working position relative to the support rod; when the rotor is located at the first working position, the projection length of the rotor on the edge beam is smaller than the length of the opening; when the rotor is at the second working position, the projection length of the rotor on the edge beam is greater than the length of the opening; the supporting rod is connected with the rotor through a positioning mechanism; an elastic driving mechanism