Welding apparatus and welding method for railway track rails

摘要

Rail track welding machine includes a machine frame with on-track undercarriages, a rail pulling device (12) and a welding unit. Rail pulling device grips the rail ends to be welded and includes two transverse beams (15) each pivotably connected with a pair of clamping members (17) with jaws (19) for gripping the rail. Each transverse beam is fastened with a rail clamp (22) that grips the rail end from the ties and is positioned between the pivot axes (18) of each pair of clamping members. An adjustment drive (23) vertically adjusts each of the rail clamps independently. An independent claim is included for a method of welding rails.