Machine and method for removing an old track and laying a new track

摘要

A machine for removing an old track and for simultaneously laying a new track on a ballast bed, which comprises a first tie transport apparatus for receiving the old ties, and a second tie transport apparatus for delivering new ties and laying the new ties. A lifting device may be selectively placed in an operating position on the first or the second tie transport apparatus for insertion between the ballast bed and an old tie for engaging the old tie and lifting it off the ballast bed. This may be done by selectively coupling the lifting device to a respective tie transport apparatus, or by driving the lifting device on each tie transport apparatus between operative and inoperative positions.