Quick tightening driving device for intelligent pipeline welding tractor

The utility model provides a quick tightening driving device for an intelligent pipeline welding tractor, which comprises a welding tractor, a driving mechanism is arranged at the bottom of the welding tractor, and the driving mechanism comprises a mounting bottom plate mounted at the bottom of the welding tractor; by means of the tensioning shaft, the first tensioning block and the second tensioning block, when the welding trolley is installed on a welding track, the tensioning shaft is rotated by rotating the tensioning handle, so that the first tensioning block and the second tensioning block are driven to rotate, the first tensioning block extrudes the sliding seat, and the sliding seat is driven to rotate. The sliding blocks drive two second driven wheels at the bottom of the movable frame to be far away from the first driven wheels, so that the first driven wheels and the second driven wheels are clamped on the inner side of the welding track, meanwhile, the second tensioning blocks extrude the jacking