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Mobile track leveling, lining and tamping machine
| Details |
Inventors: Theurer, Josef;
Assignee: Franz Plasser Bahnbaumaschinen-Industriegesellschaft m.b.H. (Vienna, AT)
Primary Examiner: Reese; Randolph A.
Assistant Examiner:
Attorney, Agent or Firm: Kelman; Kurt
A mobile track leveling, lining and tamping machine has a main frame supported on undercarriages for mobility on the track in an operating direction, a drive for propelling the main frame in the operating direction, a carrier frame trailing the main frame in the operating direction, a single support and guide carriage supporting and guiding the carrier frame at a rear end thereof in the operating direction and spaced from one of the undercarriages of the main frame in the direction of the track, a tamping unit mounted on the carrier frame between the one undercarriage and the support and guide carriage, the tamping unit immediately preceding the support and guide carriage in the operating direction, a track leveling and lining unit preceding the tamping unit in the operating direction, a pivotal connection pivotally supporting a front end of the carrier frame on the main frame, and an adjustment drive at the pivotal connection for adjusting the position of the carrier frame in relation to the main frame in the operating direction. |
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DETAILED DESCRIPTION What is claimed is: 1.
A mobile track leveling, lining and tamping machine which comprises a main frame suppported on undercarriages for mobility on the track in an operating direction, a drive for propelling the main frame in the operating direction, a carrier frame trailing the main frame in the operating direction, the carrier frame having, in the operating direction, a rear portion and a centered pole portion extending forwardly therefrom, a single support and guide carriage constituting a freely movable steering axle comprising a set of flanged wheels running on the track rails and supporting and guiding the rear frame portion thereon, the support and guide carriage being spaced from one of the undercarriages of the main frame in the direction of the track, a tamping unit mounted on the rear frame portion between the one undercarriage and the support and guide carriage, the tamping unit immediately preceding the support and guide carriage in the operating direction, a track leveling and lining means on the carrier frame and preceding the tamping unit in the operating direction, the centered pole portion being constituted by an elongated boom-shaped carrier extending in the operating direction and having a front end linked to the main frame to form a pivotal connection pivotally supporting the front end on the main frame, and an adjustment drive housed in the boom-shaped carrier for adjusting the position of the carrier frame in relation to the main frame in the operating direction, the adjustment drive being arranged to provide an adjustment path for the position of the carrier frame in relation to the main frame of a length at least twice the average distance between the ties for enabling the main frame to advance continuously and non-stop along the track while the position of the carrier frame and the tamping unit thereon is adjusted step-wise during the continuous and non-stop advance as the machine moves from tamping stage to tamping stage.
2.
The track leveling, lining and tamping machine of claim 1, wherein the adjustment drive is a double-acting hydraulic cylinder-and-piston device having a piston movement controlled synchronously with, but in the opposite direction of, the continuous and non-stop advance of the main frame, and blockable to keep a constant distance between the main and carrier frames
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