Patent ID: 6637133
Filing Date: 2003-10-28
Classification: E01B

Abstract:
A ballast cleaning machine for cleaning a ballast bed supporting a track, which comprises(a) a machine frame extending in a longitudinal direction and supported on the track by undercarriages for movement in an operating direction, (1) one of the undercarriages at an end of the machine frame being displaceable in the longitudinal direction, (b) two vertically and laterally adjustable endless ballast excavating chains sequentially arranged in the longitudinal direction for excavating ballast from the ballast bed and mounted on the machine frame next to each other between the undercarriages without any undercarriage positioned between the two sequentially arranged ballast excavating chains, (c) drives for vertically and laterally adjusting, and for revolving, each endless ballast excavating chain, (d) a respective operator's cab mounted on the machine frame in view of each endless ballast excavating chain (1) a control for the drives being arranged in each operator's cab, (e) at least two track lifting devices mounted on the machine frame, (f) a screening installation for cleaning ballast mounted on a car linked to the machine frame, (g) a first conveyor arrangement for conveying the ballast excavated by the two endless ballast excavating chains to the screening installation, and (h) a second conveyor arrangement for distributing the cleaned ballast from the screening installation to the ballast bed.