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US 4,282,815 AGranted
Railroad tamping machine
AssigneeCanron, Inc.
InventorHelmuth von Beckmann
Life of this patent
Estimating the term…
Abstract
A railroad tamping machine for tamping adjacent pairs of ties in which the tamping units associated with each of the ties can be moved vertically as a unit or independently of each other and wherein a selected set of tamping units associated with a single tie can be held in an inoperative position while the remaining tamping units work on the associated tie.
Claims17
A railroad tamping machine mounted on a railroad vehicle for movement along the track comprising;
- a pair of work heads each including a pair of tamping units arranged longitudinally of a rail of said track with said pair of tamping units of each tamping head being disposed at opposite sides of one tie of a pair of adjacent ties, and one tamping unit of each of said tamping heads being disposed between adjacent ties, said pair of tamping units of each tamping head being supported for swinging movement about horizontal axes extending transversely of said track toward and away from each other at opposite sides of an associated tie, said pairs of tamping heads being supported relative to said vehicle for vertical movement simultaneously and independently of each other, and means to hold one of said tamping heads in an elevated inoperative position relative to one tie while the other of said tamping heads is in an operative position relative to an adjacent tie.
A machine for tamping the ballast supporting ties and rails of a railroad track comprising:
- a support frame disposed in elevated position relative to a rail of said railroad track, a pair of workheads mounted on said frame for vertical movement independently of each other from an elevated position to a ballast working position, said workheads each comprising a pair of tamping units arranged longitudinally of said rail, each of said tamping units having a tool working member disposed at opposite sides of said rail, each of said tool working members including a ballast engaging tool, said pair of tamping units of each workhead being supported for swinging movement about horizontal axis toward and away from each other at opposite sides of an associated tie of a pair of adjacent ties, said pair of workheads being supported relative to said frame for simultaneously tamping ballast at opposite sides of adjacent ties, said workhead units being disposed to position one tamping unit of each workhead in close proximity to each other between a pair of adjacent ties, and means to hold a selected one of said workheads in an elevated inoperative position relative to one tie while the other of said workhead units is in operative position relative to an adjacent tie, said pair of workheads being off-set transversely of said rail relative to each other to permit swinging movement of adjacent tamping units between adjacent pairs of ties into close proximity with each other.
A railroad tamping machine mounted on a railroad vehicle for movement along a track comprising;
- two pairs of tamping units arrange longitudinally of a rail of said track with said tamping units of each pair being disposed at opposite sides of one tie of a pair of adjacent ties, said tamping units of each pair being supported for swinging movement about horizontal axes toward and away from each other at opposite sides of the associated tie, said pairs of tamping units being supported relative to said vehicle for vertical movement simultaneously and independently of each other, a support frame and a pair of subframes, each of said subframes slidably supporting one of said pairs of tamping units for vertical movement independently of the other pair of tamping units, said subframes being off-set transversely from each other relative to said track to permit movement of tamping units adjacent to each other and between a pair of adjacent ties to move into close proximity with each other, and means to hold one of said pairs of tamping units in an elevated inoperative position while the other of said pairs is in operative position.
Dependencies are inferred from the claim text.