Mobile track tamping machine that tamps three successive cribs
AssigneeFranz Plasser Bahnbaumaschinen-Industriegesellschaft m.b.H.
InventorJosef Theurer
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Abstract
A mobile track tamping machine comprises a tamping tool assembly mounted on a carrier for vertical movement therewith and a drive for vertically moving the tamping tool assembly carrier. The tamping tool assembly includes three pairs of vibratory tamping tools spaced from each other in the direction of track elongation so that the pairs of tools may be immersed in three successive cribs. The tools of each pair are reciprocable in opposite directions towards and away from the elongated edges of adjacent ties wherebetween the cribs are defined. All tamping tools are vibrated by a common drive and drives are provided for reciprocating the tamping tools.
Claims8
A mobile track tamping machine for substantially simultaneously tamping ballast underneath successive track ties resting on the ballast, the ties having elongated edges extending transversely of the track and two ends extending in the direction of the track, the elongated edges of adjacent ones of the ties defining cribs therebetween, which comprises
- (a) machine frame;
- (b) a carrier mounted on the machine frame;
- (c) a tamping tool assembly mounted on the carrier and including as sole means for tamping ballast from the cribs under the ties
- (1) three pairs of vibratory tamping tools spaced from each other in the direction of the track, the spacing being such that each pair of tools is in vertical alignment with a respective one of three successive ones of the cribs whereby a respective pair of the tamping tools may be immersed in the three successive cribs upon vertical lowering of the tamping tool assembly carrier, the tamping tools of each pair being reciprocable in opposite directions towards and away from a respective one of the elongated edges of the ties, the ballast under which is being tamped by the tools of the pair
- (d) a common drive for vibrating the three pairs of tamping tools,
- (e) a drive for vertically moving the carrier,
- (f) drive means for reciprocating the tamping tools of each pair, and
- (g) means for mounting the pairs of tamping tools on either side of an intermediate one of the pairs of tamping tools movably in the direction of the track in relation to the intermediate pair of tamping tools.
Dependencies are inferred from the claim text.