Anti-corrosion material wrapping belt winding assistive device based on submarine petroleum pipeline

The utility model discloses an anti-corrosion material wrapping belt winding assistive device based on a submarine petroleum pipeline, which comprises a first fixing ring and a second fixing ring, one end of the first fixing ring is connected with one end of the second fixing ring through a connecting beam, and rollers are mounted on the inner side of the first fixing ring and the inner side of the second fixing ring. A tensioning degree adjusting structure is arranged at the position, close to the bottom, of the inner side of the first fixing ring, an expansion structure is arranged on the outer side of one end of the first fixing ring and the outer side of one end of the second fixing ring, the tensioning degree adjusting structure comprises a rotating sleeve, a threaded sleeve, a compression spring, a shaft rod, a rotating head and a threaded head, and the rotating sleeve is rotationally connected with the first fixing ring. According to the anti-corrosion material wrapping belt winding assistive device ba