Jacking limiting roller mechanism for external hanging frame body of building machine

The utility model discloses a jacking limiting roller mechanism for an external hanging frame body of a building machine, and belongs to the technical field of building machines for buildings. The device comprises a limiting support rod, a connecting end plate, a reinforcing triangular plate, rollers and roller pins, the outer end face of the limiting supporting rod is fixedly connected with the connecting end plate. A set of reinforcing triangular plates are arranged between the connecting end plates and the limiting supporting rods. A notch is formed in the inner end of the limiting supporting rod; and the roller is movably embedded in the notch and is connected with the limiting support rod through a roller pin. The limiting supporting rod, the connecting end plate and the reinforcing triangular plate are all steel components, the limiting supporting rod and the connecting end plate are fixedly welded, and the reinforcing triangular plate is fixedly welded to the limiting supporting rod and the connecting