Ballast tamping tool unit

Details Ballast tamping tool unit Ballast tamping tool unit

E - Fixed Constructions

01

B

104/10

E01B 27/00 (2006.01) E01B 27/16 (2006.01)

Patent

CA 1180948

ABSTRACT OF THE DISCLOSURE A tamping tool unit for a ballast tamping machine has a frame and a tamping tool unit carrier vertically adjustably mounted on the frame. The unit comprises a pair of tamping tool holders, each holder having affixed thereto a tamping tool for immersion in the ballast adjacent a point of intersection of a track tie and rail where the track is supported on the ballast. A transverse axle pivotally supports each tamping tool holder on the carrier and a hydraulic reciprocating drive pivots the tamping tool holders independently of each other and asynchronously towards and away from each other transversely to the track tie. Each axle is eccentrically supported to impart thereto a constant horizontal and vertical motion with respect to the carrier and a transmission connects the eccentric axle supports and is arranged to cause the motions of the axles to be effected in opposite directions. A common vibrating drive is connected to one of the supports for rotating the same about an axis of rotation to impart to the axles revolving motions in opposite directions. The axes of rotation of the eccentric axle supports are so spaced from the axles that the axles move in orbits downwardly in the portions of the orbits facing each other whereby the lower ends of the tamping tools are vibrated in elliptical paths downwardly with respect to the track support point.

397658

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