Conveyors: power-driven – Conveyor section – Endless conveyor
Patent
1990-03-08
1991-07-16
Olszewski, Robert P.
Conveyors: power-driven
Conveyor section
Endless conveyor
198820, 198825, B65G 1508
Patent
active
050317539
ABSTRACT:
A hinged belt conveyor is provided with spring biased idler compensating rolls for exerting a vertical upward force on the central troughing portion of the hinged belt on the loaded belt flight in relationship to the amount of material being carried by the belt at various locations and in relationship to the tension in the belt for conveying particulate materials along an inclined or declined path. The belt extends between a head pulley and a tail pulley, one of which is power driven. Spaced idler troughing roll sets extend transversely beneath the troughing portion of the belt. Certain of the roll sets include a horizontal roll which is spring biased upwardly into contact with the central portion of the belt by vertically acting springs engaged with the outer ends of the horizontal roll shaft. In one embodiment the horizontal roll is the center roll of a usual three roll set, and in another embodiment the horizontal roll is a single roll extending transversely across and beneath the width of the belt. The tension of the springs are adjustable to correspond with the belt tension which varies along the belt length.
REFERENCES:
patent: 3062360 (1962-11-01), Arndt et al.
patent: 3105588 (1963-10-01), Long
patent: 4709806 (1987-12-01), Candle
patent: 4747344 (1988-05-01), Hashimoto et al.
patent: 4760913 (1988-08-01), Tschantz
patent: 4823941 (1989-04-01), Mindich
Bidwell James R.
Harrison Handling, Inc.
Olszewski Robert P.
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