Auxiliary device for long-distance pipeline welding

An auxiliary device for long-distance pipeline welding belongs to the technical field of pipeline welding construction, and comprises four groups of steel structure pendants hung on a steel beam of a steel structure pipe frame and arranged in a matrix, penetrating connection rods penetrating between two groups of steel structure pendants positioned on the opposite side, and springboards lapped between the two penetrating connection rods at intervals. The whole steel structure hanging piece is H-shaped and comprises horizontal channel steel, a pair of H-shaped steel stand columns welded to the two ends of the lower surface of the channel steel and a pair of steel square rings welded to the lower surfaces of the H-shaped steel stand columns, and ring holes of the steel square rings are opposite. And the penetrating rod comprises square steel and limiting blocks which are welded on the upper surface of the square steel and are arranged in pairs. The pipeline high-altitude welding supporting device solves the pro