Tamping unit and method for tamping a track
AssigneePlasser & Theurer Export von Bahnbaumaschinen Gesellschaft m.b.H.
InventorGeorg Seyrlehner
Life of this patent
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Abstract
A tamping unit for tamping a track has tamping tines which are designed for immersion into a ballast bed and which can be set in vibrations by a vibration drive. The vibration drive includes a housing in which a shaft including an eccentric is arranged for rotation about a shaft axis. A transmission element for transmitting a vibratory motion is mounted on the eccentric. The eccentric is connected to the shaft in a rotation-locked and radially displaceable manner, wherein the position of the eccentric relative to the shaft is adjustable in radial direction by an adjustment device. Thus, while retaining the advantages of an eccentric drive, it is possible to adjust vibration parameters during operation.
Claims13
A tamping unit for tamping a track, the tamping unit comprising:
- tamping tines configured for immersion into a ballast bed;
- a vibration drive for vibrating said tamping tines, said vibration drive having a housing and a shaft rotatably mounted for rotation about a shaft axis;
- an eccentric connected to said shaft in a rotation-locked and radially displaceable relationship, and a transmission element for transmitting a vibratory motion mounted to said eccentric;
- and
- an adjustment device configured to adjust a position of said eccentric relative to said shaft in a radial direction, said adjustment device including at least one hydraulic cylinder with a piston configured for exerting an adjustment force upon said eccentric, said hydraulic cylinder being arranged in said shaft.
A tamping unit for tamping a track, the tamping unit comprising:
- tamping tines configured for immersion into a ballast bed;
- a vibration drive for vibrating said tamping tines, said vibration drive having a housing and a shaft rotatably mounted for rotation about a shaft axis;
- an eccentric connected to said shaft in a rotation-locked and radially displaceable relationship, and a transmission element for transmitting a vibratory motion mounted to said eccentric;
- said shaft having, at a shell surface thereof, two oppositely positioned parallel flat portions configured for guiding said eccentric radially, and
- an adjustment device configured for adjusting a position of said eccentric relative to said shaft in a radial direction.
Dependencies are inferred from the claim text.