Multi-station circular tube beam automatic welding tool

The utility model provides a multi-station automatic welding tool for a circular tube beam, which relates to the technical field of welding tools and comprises a mounting mechanism and a welding machine. A driving mechanism is mounted on the left side of the upper part of the mounting mechanism; a rotating mechanism is mounted on the right side of the driving mechanism; a fixing mechanism is mounted above the mounting mechanism; the mounting platform is fixedly connected above the welding machine; the movable sleeve is rotated to enable the sliding part to move towards the plate-shaped protrusion at the right end of the rotating part, the supporting plate A and the supporting plate B move in the vertical direction, the circular tube beam is supported from the interior of the circular tube beam, the driving motor is used for driving the circular tube beam to rotate, welding operation is facilitated, and welding efficiency is improved. By means of the rotating mechanism, the circular tube beam can be fixed whil