Prefabricated bridge component for building production

The utility model discloses a prefabricated bridge member for building production, which comprises I-shaped steel, a U-shaped steel plate, a supporting mechanism, a first stabilizing mechanism and a second stabilizing mechanism, the first stabilizing mechanism comprises mounting plates which are welded to the inner wall of one side of the I-shaped steel and distributed at equal intervals, supporting rods, mounting grooves formed in the two ends of the supporting rods, and connecting holes formed in the inner walls of the two sides of the mounting grooves and the outer walls of one sides of the mounting plates. The second stabilizing mechanism comprises two ejector rods welded to the inner wall of the bottom of the U-shaped steel plate and fixing blocks rotationally connected to the outer walls of the ejector rods. The I-shaped steel and the U-shaped steel plate are arranged, the mounting plates are arranged on the inner walls of the top and the bottom of the I-shaped steel, the mounting plates are connected w