| 摘要 |
A track renewal train comprised of a plurality of rail freight cars has coupled to its last car a bridge-like car having at respective ends thereof a rail-bound front undercarriage and a rail-bound rear undercarriage, and a track-laying bogie running on the ballast bed intermediate the undercarriages, the bridge-like car being supported with the front undercarriage on a track consisting of old ties and rails, on which the train moves in a working direction, and with the bogie on the ballast bed. Hoists are mounted on the bridge-like car for lifting separated sections of the old track and the lifted track sections are conveyed to selected freight cars. Simultaneously, new ties stored on the freight cars are conveyed against the working direction to the bridge-like car, successive new ties are lowered from the bridge-like car to the ballast bed, which has previously been planed, between the bogie and the rear undercarriage, the lowered new ties are laid on the planed ballast bed, new rails are laid on the new ties and fastened thereto. |
