Ballast cleaning machine

Details Ballast cleaning machine Ballast cleaning machine

1987-02-12

1989-03-21

Garrett, Robert E.

Unearthing plants or buried objects

Railroad ballast removal and assorting or separating

E01B 2700

Patent

active

048134880

ABSTRACT:
A ballast cleaning machine for excavating ballast supporting a track and for cleaning the excavated ballast, comprises a ballast screening installation mounted on the machine frame and arranged to receive the excavated ballast from the discharge end of a ballast excavating and conveying chain, and to clean the received ballast by separating waste therefrom, the screening installation comprising two screening units each of which comprises a set of a plurality of superposed screens extending obliquely with respect to the track in the direction of elongation of the machine, the sets of screens being arranged sequentially in, and symmetrically with respect to a vertical plane extending transversely to, this direction, and the obliquely extending screens ascending from a centrally located common outlet of the two sets of screens to two separate inlets for the excavated ballast, and independent vibrators for each set of screens for conveying the cleaned ballast on the screens in respective conveying directions from a respective one of the inlets to the common outlet.

REFERENCES:
patent: 2142208 (1939-01-01), Protzeller
patent: 3685589 (1972-08-01), Plasser et al.
patent: 3872929 (1975-03-01), Theurer et al.
patent: 3900392 (1975-08-01), Speno et al.
patent: 4245703 (1981-01-01), Theurer et al.

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