Conveyors: power-driven – Conveyor section – Endless conveyor
Patent
1985-04-22
1986-12-16
Valenza, Joseph E.
Conveyors: power-driven
Conveyor section
Endless conveyor
474102, 226 23, B65G 3916
Patent
active
046290613
ABSTRACT:
A belt steering control system for a belt press having a frame and a plurality of rolls around which a pair of belts passes, said system comprising a paddle-type belt edge position sensor lightly biased against the edge of the belt for sensing the actual position of the belt edge and producing an error signal indicative of the deviation of the belt edge relative to its position where the belt is centered; the paddle sensor being connected by a control shaft to a rotary drive transfer means; the drive transfer means transmitting movement of the paddle sensor to a rotary hydraulic valve by means of a variably tensioned, spring-loaded disc which engages the rotary drive transfer means; a belt steering roll around which the belt is trained and having two ends mounted in bearings on the frame, one of the ends being mounted for translation relative to the frame; and a steering roll actuator which is controlled by the rotary hydraulic valve and skews the steering roll when necessary to maintain proper belt tracking.
REFERENCES:
patent: 2720231 (1955-10-01), Hessler et al.
patent: 2777331 (1957-01-01), Cruickshanks
patent: 3184374 (1965-05-01), Pearson
patent: 3312335 (1967-04-01), Paris et al.
patent: 4354595 (1982-10-01), Reynolds
Crain Lawrence J.
Rexnord Inc.
Valenza Joseph E.
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