Bucketwheel excavator with oscillating nozzles

Details Bucketwheel excavator with oscillating nozzles Bucketwheel excavator with oscillating nozzles

1984-12-14

1986-03-04

Crowder, Clifford D.

Mining or in situ disintegration of hard material

Hard material disintegrating machines

Floor-working

299 17, 299 67, 37 78, 37141R, 37190, E21C 2560

Patent

active

045737436

ABSTRACT:
Instead of teeth or similar cutting or loosening means, oscillating nozzles are arranged on the outer backs and the outer side walls of the buckets of the bucketwheel of a bucketwheel excavator, the nozzles being capable of being supplied with liquid, in particular water, at high pressure. These nozzles enable the excavator to strip or mine deposits of high hardness and strength as well as highly abrasive deposits with reduced outage periods and reduced force required for digging as well as lower capital costs and operating costs. In addition to the oscillating nozzles, fixed nozzles may additionally be provided which produce cuts in the material to be excavated whereby the formation of large lumps is prevented.

REFERENCES:
patent: 3554602 (1971-01-01), Chaney
patent: 4167292 (1979-09-01), Eller
patent: 4418484 (1983-12-01), Wolters et al.
Reichman et al., "An Oscillating Waterjet Deep-Kerfing Technique", Int. J. Rock Mech. Min. Sci. & Geomech. Abstr., vol. 15, pp. 135-144, 1/1978.

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