US 5,007,349 AGranted

Mobile track leveling, lining and tamping machine

AssigneeFranz Plasser Bahnbaumaschinen-Industriegesellschaft m.b.H.

InventorJosef Theurer

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Abstract

A mobile track leveling, lining and tamping machine comprises four ballast tamping units mounted between the undercarriages of the machine and immediately preceding the rear undercarriage in the operating direction. The ballast tamping units are mounted for independent transverse and vertical adjustment with respect to the machine frame by power drives, a respective one of the ballast tamping units being arranged at the gage side and the field side of each rail, and each ballast tamping unit comprising a pair of vibratory tamping tools reciprocable in the direction of the track and immersible in the ballast with a respective one of the ties positioned between the tamping tools. A carrier frame for the four ballast tamping units is pivotal about a substantially vertical axis constituted by a line of intersection between a vertical plane of symmetry extending in the longitudinal direction of the machine and a vertical plane of symmetry extending transversely thereto and passing between the pairs of tamping tools of the four ballast tamping units and a power drive pivots the carrier frame about the vertical axis whereby the pairs of tamping tools may be centered with respect to obliquely positioned ties. A track leveling and lining unit is mounted on the machine between the two undercarriages and immediately preceding the ballast tamping units in the operating direction, and a leveling and lining reference system controls the track leveling and lining unit operation.

A mobile track leveling, lining and tamping machine, a track comprising two rails fastened to ties supported on ballast and each rail having a gage side and a field side, which comprises the combination of

(a) a machine frame mounted for mobility along the track in an operating direction and carrying drive, brake, operating energy source and operating control means,
(b) two widely spaced undercarriages supporting the machine on the track, including a rear undercarriage in the operating direction,
(c) four ballast tamping units mounted between the undercarriages and immediately preceding the rear undercarriage in the operating direction, the ballast tamping units being mounted for independent transverse and vertical adjustment with respect to the machine frame, a respective one of the ballast tamping units being arranged at the gage side and the field side of each rail, and each ballast tamping unit comprising
(1) a pair of vibratory tamping tools reciprocable in the direction of the track and immersible in the ballast with a respective one of the ties positioned between the tamping tools,
(d) a carrier frame for the four ballast tamping units, the carrier frame being pivotal about a substantially vertical axis constituted by a line of intersection between a vertical plane of symmetry extending in the longitudinal direction of the machine and a vertical plane of symmetry extending transversely thereto and passing between the pairs of tamping tools of the four ballast tamping units,
(e) transverse and vertical guide means on the pivotal carrier frame for independently vertically and transversely adjusting each unit,
(f) power drive means linking each unit to the pivotal carrier frame for independently vertically and transversely adjusting each unit,
(g) a power drive for pivoting the carrier frame about the vertical axis whereby the pairs of tamping tools may be centered with respect to obliquely positioned ties,
(h) a track leveling and lining unit mounted on the machine between the two undercarriages and immediately preceding the ballast tamping units in the operating direction, and
(i) a leveling and lining reference system controlling the track leveling and lining unit operation.

7 more elements

Abstract

Claims15