Shipyard engineering steel structure polishing device and using method thereof

The invention relates to the technical field of shipyard steel structure machining, and particularly discloses a shipyard engineering steel structure grinding device and a using method thereof.The device comprises a grinding box, a conveying roller, a pressing roller and a grinding machine, the whole grinding box is of a strip-shaped structure, a grinding cavity is formed in the interior of the grinding box in a hollow mode, and material openings are formed in the two ends of the grinding cavity; the material ports at the two ends are kept on the same horizontal line; the conveying rollers are arranged in the grinding cavity side by side, and the conveying rollers are parallel to the arrangement direction of the material opening; the pressing roller is arranged on the upper portion of the conveying roller, the pressing roller is attached to the two ends of the grinding cavity, and the pressing roller is parallel to the conveying roller; a plurality of groups of polishers are arranged, and the polishers are hu