Double-sided welding device for curved-surface U-shaped rib

The utility model provides a curved-surface U-rib double-side welding device which is characterized in that a variable-frequency walking structure is slidably connected to the top surface of a curved-surface U-rib and fixedly connected with a plurality of vehicle body guide structures, one end of each vehicle body guide structure is fixedly connected to the variable-frequency walking structure, and the other end of each vehicle body guide structure is slidably connected to the side surface of the curved-surface U-rib; the welding handle moving and clamping structure is fixedly connected to the front end of the variable-frequency walking structure, the welding handle moving and clamping structure comprises clamping devices, the clamping devices are fixedly connected to the two sides of the welding handle moving and clamping structure, and the curved-surface U rib is located between the two clamping devices; according to the double-face welding device for the curved-surface U-shaped rib, welding on the two side