Automatic centering and auxiliary welding device for transverse welding seam of welded pipeline

The utility model belongs to the technical field of pipeline welding, and relates to an automatic centering and auxiliary welding device for a transverse weld joint of a welded pipeline, which comprises a base, two groups of bearing pieces are arranged above the base, one group of bearing pieces is matched with a guide rail on the base to slide and is driven by a movable driving component, and the other group of bearing pieces is fixedly connected with the base. The two groups of bearing pieces are coaxial; each bearing piece comprises a V-shaped block, a rolling wheel is arranged in the middle of the V-shaped face of each V-shaped block, the rolling wheel on one side of each V-shaped block is connected with the rotary driving assembly through a driving shaft, and the rolling wheels on the corresponding sides of the two bearing pieces are coaxial. According to the utility model, two welded pipelines can be automatically centered, the coaxial deviation is small, and the horizontal welding quality of the pipeli