| 摘要 |
A machine for cleaning a ballast bed has, in front of a take-up device (3) relative to a working direction (9), a first signal receiver (12) - suitable for position determination in a global navigational satellite system - for scanning an actual track position. A second signal receiver (13) connected to the machine (1) for scanning a new track position created by laying down the raised track (2) onto the re-applied ballast bed (4) is arranged downstream. Both signal receivers (12, 13) are associated with a control device (14) designed to act on the drives (10) that displace a track-lifting device (11) relative to the machine frame (8). |
