| 摘要 |
A mechanised track maintenance train comprising independently mobile maintenance vehicles 3, 4, 5 has a fixed reference line 10 common to all the vehicles and set up section by section alongside the track. Each vehicle has a sensing probe 16, 24, 29 which travels along the reference line, the line being at least twice the overall length of the track maintenance vehicles. The latter may be a ballast cleaner, a tamping and levelling machine, and a vibratory stabiliser. Alternatively a leading tamping and levelling machine may be coupled to the ballast cleaner. <IMAGE> |
