Patent ID: 7470871

Claim:
A machine for welding rails of a track extending in a longitudinal direction, the machine comprising: a machine frame extending in the longitudinal direction and having on-track undercarriages for mobility on the track; a rail pulling device for gripping the rails to be welded to one another, the rail pulling device having two transverse beams extending substantially perpendicularly to the longitudinal direction; clamping members mounted on said transverse beams for pivoting about mutually parallel pivot axes, said clamping members forming two respective pairs, spaced from one another in the longitudinal direction, and having clamping jaws provided for clamping the rail; hydraulic drives connecting the two pairs of clamping members to one another; a drive connecting said rail pulling device for vertical adjustment to said machine frame; coupling devices connecting said rail pulling device to said machine frame in a region of each of said transverse beams, respectively; longitudinal displacement drives and transverse displacement drives for displacing each coupling device in the longitudinal direction and transversely to the longitudinal direction relative to said machine frame; a tilting drive provided on the coupling device for tilting said rail pulling device about an axis extending in the longitudinal direction; and a welding unit for welding the rails.