Large steel rolling coiling device with feeding pipe convenient to replace

The utility model relates to the technical field of steel rolling, in particular to a large steel rolling coiling device convenient for replacing a feeding pipe, which comprises a fixed frame, a quick-changing arm component is arranged on the fixed frame and comprises a fixed arm and a mounting disc, the mounting disc is arranged below the end part of the fixed arm, and a spiral feeding pipe is arranged at the lower end of the mounting disc. The spiral feeding pipe is connected with the mounting disc through a pin shaft mechanism, a plurality of three-roller guides are arranged on the side face of the spiral feeding pipe, and the three-roller guides are spirally distributed on the outer surface of the spiral feeding pipe. Rapid replacement of the spiral feeding pipe is achieved through the pin shaft mechanism and the rapid replacement arm, the replacement speed of different specifications can be increased, scratches on the surface of steel are reduced, and the surface quality of the steel is improved. 本实用新型涉及