Track surfacing apparatus
AssigneeFranz Plasser Bahnbaumaschinen-Industriegesellschaft m.b.H.
InventorJosef Theurer
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Abstract
A mobile apparatus for dynamically stabilizing a ballast bed supporting a track at a desired level comprises a reference for determining a deviation of the track grade from the desired level, and at least two track stabilization units spaced from each other in the direction of track elongation. Each unit includes a chassis running on the track rails on flanged wheels, vibrators for imparting at least approximately horizontal vibrations to the track engaged by the flanged wheels, a mechanism for laterally pressing the flanged wheels into play-free engagement with their associated rails, and loads associated with each rail and supplemental to the weight of the apparatus for imparting a pressure to the rails in the direction of the ballast bed whereby the vibrating track is pressed to a lower level.
Claims10
In a mobile apparatus for compacting ballast of a ballast bed supporting a track consisting of two rails fastened to ties resting on the ballast, each rail having a rail head with an upper surface and a side face, the apparatus comprising means for determining a deviation of the track position from a desired level:
- at least two track stabilization units spaced from each other in the direction of track elongation, each unit including a chassis mounted for mobility on the track on two undercarriages spaced from each other in the direction of track elongation, each undercarriage having rail engaging and guiding means associated with each of the rails, said means comprising rollers engaging the upper surfaces of the rail heads and guide elements engaging the side faces of the rail heads and cooperating with the rollers, means for imparting at least approximately horizontal vibrations to a section of the track engaged by the rail engaging and guiding means, the vibration imparting means including the rails engaging and guiding means and a vibration producing means arranged on the chassis, means associated with the rail engaging and guiding means for simultaneously laterally pressing the guiding elements associated with each rail without play against the rail with which they are associated, the pressing means and the vibration producing means being arranged on the chassis for vibration in unison whereby the rail engaging and guiding means transmit the vibration to the track section, and load means in the region of the vibration imparting means for imparting a pressure to both rails of the track in the direction of the ballast bed whereby the track is pressed to a lower level.
Dependencies are inferred from the claim text.