Overhanging type prefabricated stand plate sliding installation device and construction method thereof

The invention discloses an overhanging type prefabricated stand plate sliding installation device and a construction method thereof, and relates to the technical field of building construction. The overhanging type prefabricated stand plate sliding installation device comprises an I-shaped steel sliding rail, a sliding device, a sliding balance weight, an electric hoist, sliding power equipment and an assembling platform. According to the overhanging type prefabricated stand plate sliding installation device, the I-shaped steel sliding rail is installed on a cast-in-place stand oblique beam, the assembling platform is arranged at a low elevation position, a prefabricated stand plate is hoisted to the assembling platform through a crawler crane, the electric hoist hoists the prefabricated stand plate, the whole sliding device slides on the I-shaped steel sliding rail through traction of a traction steel wire rope under a condition that a winch provides power, the prefabricated stand plate is vertically transpo