Mining or in situ disintegration of hard material – Hard material disintegrating machines – Rotary cutter head with advance direction coincident or...
Patent
1981-11-05
1984-01-31
Pate, III, William F.
Mining or in situ disintegration of hard material
Hard material disintegrating machines
Rotary cutter head with advance direction coincident or...
299 58, 299 86, 299 90, E21C 2516
Patent
active
RE0315117
ABSTRACT:
The main frame of the cutterhead comprises a plurality of radial spoke beams which are interconnected between a box-like hub structure and an annular box beam by which the cutterhead is mounted for rotation. Cutter mounting wells are defined by and between side wall portions of the radial spoke beams. The mined material passes rearwardly through the cutterhead via openings between adjacent radial spoke beams and open spaces in the cutter mounting wells. Cutter mounts span laterally between the side plate members and laterally brace the radial spoke beams in addition to mounting the cutters. The radial spoke beams curve rearwardly at their outer ends and connect to the annular box beam at a location spaced enough rearwardly from the front portions of the spoke beams that a room is defined within the cutterhead. Roller type cutters are installed onto and removed from the cutterhead frame from the rear side of the cutterhead.
REFERENCES:
patent: 1530768 (1925-03-01), Hoag
patent: 3191699 (1965-06-01), Robbins et al.
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patent: 3358782 (1967-12-01), Bechem
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patent: 3787101 (1974-01-01), Sugden
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Robbins Drawings D10665, 12-30-75.
Robbins Drawings D8453, 9-20-74, D10679, 2-9-76.
Chapter 21 of 1976 Rapid Excavation and Tunneling Conference Proceedings pp. 355-376, Jun. 14, 1976.
Photo of Robbins Models 144-151, 165-162, 352-128.
Pate III William F.
The Robbins Company
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