Method and installation for rehabilitating a ballast bed

Details Method and installation for rehabilitating a ballast bed Method and installation for rehabilitating a ballast bed

2008-05-12

2010-06-22

Hartmann, Gary S (Department: 3671)

Excavating

Railway graders

C171S016000, C104S007300

Reexamination Certificate

active

07739811

ABSTRACT:
In a method of rehabilitating a ballast bed of a track by excavating contaminated ballast and conveying the excavated contaminated ballast by a first conveyor band unit to a screening unit for cleaning the excavated contaminated ballast, the ballast bed is rehabilitated selectively, in dependence on the degree of contamination of the ballast, in a first or second operating stage. The first operating stage comprises the steps of excavating an upper layer of the ballast by a first excavating device which precedes a second excavating device, in an operating direction, and conducting the excavated upper ballast layer to the first conveyor band unit while, at the same time, the remainder of the ballast is excavated by the second excavating device and is conducted to a second conveyor band unit for disposal. The second operating stage comprises the steps of excavating the ballast solely by the second excavating device and deflecting the excavated ballast to the first conveyor band unit for cleaning while the first excavating device is inoperative.

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