Excavating – Railway graders
Patent
1997-07-10
1999-07-27
Shackelford, Heather
Excavating
Railway graders
104 2, 171 16, E02F 522
Patent
active
059269812
ABSTRACT:
A track work machine for excavating material from a bed supporting a track comprises a machine frame, undercarriages supporting the machine frame on the track for movement in an operating direction, a vertically adjustable endless excavating chain operable to be trained, and revolve, around the rails in a plane inclined relative to the longitudinal direction, and a ballast clearing device mounted on the machine frame between the undercarriages, the ballast clearing device comprising a carrier frame affixed to the machine frame, a vertically and transversely adjustable plate-shaped clearing tool, and drives for vertically adjusting the clearing tool over a distance of at least 65 cm between a raised rest position and an operating position wherein the clearing tool is immersed in a respective one of the cribs, and for adjusting the clearing tool transversely to the longitudinal direction.
REFERENCES:
patent: 4108076 (1978-08-01), Knape
patent: 5125345 (1992-06-01), Theurer et al.
patent: 5553674 (1996-09-01), Theurer et al.
patent: 5579593 (1996-12-01), Murray
patent: 5600903 (1997-02-01), McCray
patent: 5611403 (1997-03-01), Theurer et al.
Franz Plasser Bahn-baumaschinen-Industriegesellschaft m.b.H.
Shackelford Heather
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