Supporting frame for roll welding of steel reinforcement framework in concrete blow-off pipe

The utility model relates to the technical field of concrete prefabricated parts, in particular to a supporting frame for roll welding of a steel reinforcement framework in a concrete blow-off pipe, which comprises a supporting part, a central plate arranged in the supporting part, four groups of supporting rods fixedly connected to the outer side of the central plate, and a supporting ring positioned on the outer side of the central plate, a positioning rod is arranged on the inner side of the supporting ring, a butt joint groove is formed in the supporting ring, a shifting plate is arranged on the outer side of the butt joint groove, a screwing piece is movably arranged on one side of the shifting plate, and the butt joint groove is used for clamping the supporting ring to the supporting rod; the movable groove is located in the shifting plate, and an extrusion spring is arranged in the movable groove; according to the supporting frame for roll welding of the steel reinforcement framework in the concrete bl