Conveyors: power-driven – Conveyor having means specialized for collecting a load from... – Having buckets specialized to gather load batches
Patent
1987-12-18
1989-05-23
Werner, Frank E.
Conveyors: power-driven
Conveyor having means specialized for collecting a load from...
Having buckets specialized to gather load batches
198833, 198711, B65G 1736
Patent
active
048321826
ABSTRACT:
An endless loop tractor drive mechanism has equally spaced pushers meshing with a bucket train where its filled circular buckets are traveling along a substantially straight ascending path to a dumping support wheel. Wire rope cables or other flexible tension elements extend between the buckets. The pushers have drive rollers for pushing the buckets, and additional rollers for guiding the cables. Additional support wheels guide the bucket train along a catenary loading span where the buckets are dragged through bulk material to fill the buckets. At least two pushers engage at least two successive buckets at all times, to distribute and share the lifting load among two or more buckets. Due to the straight ascending path, the cables are not flexed when the lifting load is applied. Thus, the combination of high tensile stresses and high cable flexure is avoided. Wear and tear on the cables are thereby minimized. Fraying and breakage of the cables are no longer problems. The cables are flexed around the dumping wheel, but the tensile stresses in the cables are low, because most of the driving effort has already been exerted by the tractor drive mechanism. The pushers are supported between two endless tractor drive chains, trained around sprockets on rotatable shafts, one of which is power driven. Guide channels embrace the drive chains to stabilize the positions and orientation of the pushers as they mesh with the bucket train.
REFERENCES:
patent: 2224282 (1940-12-01), Weinschenk
patent: 2607136 (1952-08-01), Hellums
patent: 3378130 (1968-04-01), Wallace
patent: 3688893 (1972-09-01), Wallace, Jr.
patent: 4264003 (1981-04-01), Gill
patent: 4336877 (1982-06-01), Gill
Dayoan D. Glenn
W.J. Wallace Systems, Inc.
Werner Frank E.
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