Track-tamping machine for compressing the ballast bed of a track

A track-tamping machine for compressing the ballast bed of a track, said track-tamping machine comprising:

• at least two tamping assembly groups;
• each tamping assembly group having at least two tamping assemblies, said tamping assemblies being arranged in a row and supported for transverse movement with respect to a track-tamping machine longitudinal direction by a transverse-movement device, so as to tamp the track on left and right sides of the track-tamping machine;
• wherein each of the tamping assemblies includes
• a respective outer tamping assembly with guides associated therewith, wherein the respective outer tamping assembly and the guides thereof being together displaced by an adjusting drive transversely with respect to the track-tamping machine longitudinal direction with the guides movably supported in a console;
• and
• a respective inner tamping assembly supported so as to be displaceable on the guides independently of the outer tamping assembly transversely to the track-tamping machine longitudinal direction as far as the respective outer tamping assembly;
• wherein each of the tamping assembly groups is rotatably mounted on a carrier so as to provide rotary adjustment about a track-tamping machine vertical axis;
• wherein the at least two tamping assembly groups are arranged one behind the other in the track-tamping machine longitudinal direction and are rotatably mounted about the track-tamping machine vertical axis by a common rotational device;
• and
• wherein the tamping assemblies of the tamping assembly groups are supported so as to be moved independently of one another transversely to the track-tamping machine longitudinal direction and so as to be raised and lowered independently of one another relative to the console;
• and
• wherein the tamping assemblies have at least two guides per pair of said tamping assemblies and per side of the track-tamping machine mounted in the console, said guides being offset relative to one another in the track-tamping machine longitudinal direction and in the direction of a track-tamping machine vertical axis.