MANUFACTURING TOOL FOR WELDING U-SHAPED RIB OF ORTHOTROPIC PLATE UNIT, AND ASSEMBLY LINE AND METHOD

摘要

Disclosed is a manufacturing tool for welding a U-shaped rib of an orthotropic plate unit (100). The invention comprises: an assembly line having a moving base (101), wherein the moving base is sequentially provided, in the direction in which the assembly line moves, with a welding preparation zone (1010), a fixing zone (1011), an assembling zone (1013), a welding zone (1012) and a traction zone (1014), the assembling zone being located between the fixing zone and the welding zone. A steel plate enters the welding preparation zone, and a rust removal and polishing device performs rust removal and polishing on an area to be welded of the steel plate; a front end of the steel plate enters the moving base from one end of the fixing zone, and the steel plate longitudinally moves forwards until a rear end of the steel plate passes through the fixing zone; after the entire steel plate enters the assembling zone, a U-shaped rib is hoisted onto the steel plate, and the U-shaped rib and the steel plate are assembled; and the steel plate and the U-shaped rib longitudinally move forwards together, and an inside welding gun head performs, starting from the front end of the steel plate, inside welding for the orthotropic plate unit. The tool significantly improves the production efficiency of the U-shaped rib plate unit, realizes full-penetration welding, improves the welding quality, and effectively resolves fatigue damage to a steel bridge deck plate. An assembly line for manufacturing an orthotropic plate unit and a method for welding a U-shaped rib of an orthotropic plate unit are further disclosed.