Track maintenance machine for compaction of ballast
AssigneePlasser & Theurer Export von Bahnbaumaschinen Gesellschaft m.b.H.
InventorLothar Stadler
Life of this patent
Estimating the term…
Abstract
A track maintenance machine for compaction of ballast under sleepers of a track includes a machine frame movable by undercarriages on the track and a tamping unit which includes an electric vibration drive for vibratory actuation of tamping tools. An electric intermediate circuit has an electric energy store or storage device. An electric machine is associated with at least one undercarriage and coupled for generator operation to the intermediate circuit. The electric vibration drive is coupled to the intermediate circuit for supply. In this way, braking energy is used in an optimal manner for supplying the vibration drive. A method for operation of a track maintenance machine is also provided.
Claims12
A track maintenance machine for compaction of ballast under sleepers of a track, the track maintenance machine comprising:
- a machine frame;
- undercarriages for moving said machine frame on the track;
- a tamping unit including tamping tools and an electric vibration drive for vibratory actuation of said tamping tools;
- an electric intermediate circuit with an electric energy store, said electric intermediate circuit being coupled to said electric vibration drive for supplying said electric vibration drive with energy;
- and
- an electric machine associated with at least one of said undercarriages and coupled for generator operation to said intermediate circuit.
A method for operation of a track maintenance machine for compaction of ballast under sleepers of a track, the method comprising the following steps:
- providing a track maintenance machine having:
- a machine frame,
- undercarriages for moving the machine frame on the track,
- a tamping unit including tamping tools and an electric vibration drive for vibratory actuation of the tamping tools,
- an electric intermediate circuit with an electric energy store, the electric intermediate circuit being coupled to the electric vibration drive for supplying the electric vibration drive with energy, and
- an electric machine associated with at least one of the undercarriages and coupled for generator operation to the intermediate circuit;
- using the electric machine to brake the track maintenance machine while giving off electric energy to the intermediate circuit when approaching a location of the track to be tamped;
- and
- supplying the vibration drive with electric energy from the intermediate circuit during a tamping operation.
Dependencies are inferred from the claim text.