Falling stone impact prevention device for bridge

The invention discloses a falling stone impact prevention device for a bridge, and belongs to the technical field of bridge protection. The anti-collision device comprises an elastic protective sleeve arranged on the outer side of the pier in a sleeving mode, the elastic protective sleeve is sleeved with an anti-collision sleeve, and an anti-collision guide structure used for enabling falling rocks to move towards the two sides of the pier is arranged on the side, facing a mountain, of the anti-collision sleeve. The anti-collision guide structure comprises a steel plate with a V-shaped section, an elastic buffer layer is arranged on the outer side of the steel plate, a plurality of V-shaped supporting beams are arranged on the inner side of the steel plate from top to bottom, and the ends of the elastic buffer layer, the steel plate and the supporting beams are fixedly connected with the anti-collision sleeve. Under the guiding effect of the anti-collision guiding structure, falling rocks pass through the sid