Steel column welding and fixing auxiliary device

The utility model relates to the technical field of welding auxiliary devices, in particular to a steel column welding and fixing auxiliary device which comprises a first bottom frame, the top end of the first bottom frame is fixedly connected with a top seat, a sliding groove is formed in the top face of the top seat, a first sliding column is arranged in the sliding groove, and the top end of the first sliding column is fixedly connected with a clamping ring. And the movable shaft is installed on the right side surface of the first bottom frame, a second bottom frame is arranged on the right side surface of the movable shaft, and a first connecting block is fixedly connected to the back face of the first bottom frame. The first connecting block and the second connecting block are connected and fixed, so that parallel welding of the steel column is achieved, when vertical welding is conducted, the movable shaft is rotated, then the angle between the first bottom frame and the second bottom frame is perpendic