Direction-adjustable automatic welding device for circular seam of mining machinery barrel

The utility model discloses a direction-adjustable mining machinery barrel circular seam automatic welding device which comprises a device body and an annular rotating frame, limiting sliding grooves are symmetrically formed in the top face of the device body, limiting sliding blocks are symmetrically installed on the outer wall of the annular rotating frame, and the limiting sliding blocks are clamped and embedded in the limiting sliding grooves. A mounting groove is formed in the center of the top face of the device body, a second servo motor is mounted in the mounting groove, a gear is connected to the power transmission end of the second servo motor, a gear ring is mounted on the outer wall of an annular rotating frame and meshed with the gear, an electric sliding rail is mounted on the inner wall of the annular rotating frame, and a moving frame is mounted on the electric sliding rail. And a welding mechanism is fixedly mounted on a rotating shaft mounted on the moving frame. The device has the advantage