Welding device for municipal engineering

The invention relates to the technical field of welding equipment, and provides a welding device for municipal engineering, which comprises a rack, a clamping mechanism, a welding assembly, a radial adjusting part, a welding track adjusting mechanism, a fixed pipe and a rotating assembly, and is characterized in that the inner side of a smooth circular ring in the welding track adjusting mechanism is connected with the fixed pipe through a central shaft; the second driving part is installed on the surface of the fixing pipe, the center shaft is in transmission connection with the second driving part, a welding head and a sliding part in the welding assembly are installed at the two ends of a bent rod correspondingly, the surface of the bent rod is movably sleeved with a spring, and a movable part makes contact with the surface of a smooth circular ring; the first driving part is in transmission connection with the sliding rod, the bent rod penetrates through the surface of the sliding rod, the two ends of the