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AssigneeFranz Plasser Bahnbaumaschinen-Industriegesellschaft m.b.H.
InventorsJosef Theurer, Manfred Brunninger
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A mobile track working machine arrangement comprises two consecutively arranged, independent track working vehicles, each track working vehicle comprising an elongated two-part machine frame, the two parts of the machine frame being linked by a pivot for pivoting of one part in relation to the other part about a horizontal axis extending perpendicularly to the track, and undercarriages supporting the machine frame on the track. A ballast excavating device is vertically adjustably mounted on the machine frame of a first track working vehicle for excavating the ballast supporting the track whereby the subgrade is exposed, and a conveyor arrangement is mounted on the machine frame of the first track working vehicle for removing the excavated ballast. A device for planing and compacting a protective layer of sand on the subgrade is mounted on the machine frame of the second track working vehicles. A track lifting device is mounted on each machine frame, each track lifting device comprising lifting rollers rollingly engaging the track rails in permanent frictional contact therewith, and a device for sweeping sand from the ties into adjacent cribs is mounted on the machine frame of at least one of the vehicles.
A mobile track working machine arrangement mounted on a track for movement in an operating direction, the track comprising two rails fastened to ties supported on a subgrade by a bed of ballast, the machine arrangement comprising
A method for rehabilitating a ballast bed supporting a track on a subgrade with a track working machine arrangement advancing continuously along the track, comprising the steps of
Dependencies are inferred from the claim text.