Ballast cleaning machine with pivotal and varying speed conveyor

Details Ballast cleaning machine with pivotal and varying speed conveyor Ballast cleaning machine with pivotal and varying speed conveyor

1991-12-12

1992-12-22

Butler, Douglas C.

Railways

Track layers

104 71, 171 16, E01B 2706

Patent

active

051726360

ABSTRACT:
A mobile ballast cleaning machine comprises a machine frame, undercarriages supporting the machine frame for mobility on the track, an excavating chain mounted on the machine frame and arranged to excavate the ballast to expose the subgrade, a ballast screening installation arranged to receive the excavated ballast from the excavating chain and to clean the received ballast, a ballast conveyor unit extending in the longitudinal direction and having an input end receiving the cleaned ballast from the ballast screening installation and a discharge end, a chute arranged at the excavating chain for receiving the cleaned ballast from the discharge end of the ballast conveyor unit, the chute having at least one outlet opening, a conveyor band associated with each outlet opening for receiving the cleaned ballast from the outlet opening and having a discharge end for discharging the cleaned ballast on the exposed subgrade, a variable speed drive for operating each conveyor band to impart thereto a desired conveying speed, and a power-actuated, vertically and transversely adjustable track lifting device mounted on the machine frame.

REFERENCES:
patent: 3685589 (1972-08-01), Plasser et al.
patent: 3872929 (1975-03-01), Theurer et al.
patent: 3957000 (1976-05-01), Plasser et al.
patent: 3976142 (1976-08-01), Plasser et al.
patent: 4249325 (1981-02-01), Theurer et al.
patent: 4263851 (1981-04-01), Theurer et al.
patent: 4432284 (1984-02-01), Theurer et al.
patent: 4846282 (1989-07-01), Cicin-Sain

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