| 摘要 |
A rotatable tamping tool carrier mounts a series of successive vibratory tamping tools extending in a vertical plane parallel to the track like spokes in a wheel about an axis of rotation extending transversely of the track. The tamping tool ends extend in a circle passing through the cribs beneath the tamping tool carrier whereby successive tamping tools continuously and successively tamp the ballast in successive cribs and under successive ties as the mobile track tamping machine, on which the carrier is mounted, continuously advances along the track. |
