AUTOMATIC WELDING DEVICE FOR ANGLE PIECES MOUNTED TO CORNERS IN CARGO TANKS OF MEMBRANE-TYPE LNG TANKER

摘要

Disclosed herein is an automatic welding device for angle pieces mounted to corners in the cargo tanks of a membrane-type LNG tanker. The automatic welding device includes a carriage main body, a welding head rotating means, a welding head vertical movement means, a welding head lateral movement means, a welding head unit, and a welding torch. The carriage main body is mounted on a rail so as to be moved horizontally along the rail. The welding head rotating means is mounted to the upper surface of the carriage main body so as to be rotated. The welding head vertical movement means is mounted at a predetermined position on the upper surface of the welding head rotating means so as to be vertically and laterally moved. The welding head lateral movement means is connected with the welding head vertical movement means.