Continuous miner with duct assembly

Mining or in situ disintegration of hard material – Hard material disintegrating machines – With material-handling means

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299 76, E21C 3522

Patent

active

049366327

ABSTRACT:
A self-propelled continuous mining machine includes a mobile frame assembly having a front end portion with a boom assembly pivotally retained thereon. A dust collecting system is positioned on the mobile frame assembly for inducing a flow of air through a hollow interior portion of the boom assembly. As a dislodging head removes material from a mine face, the dust collecting system draws airborne dust created by the dislodging head through a hollow interior of the boom assembly and into the collecting system mounted on the mobile frame assembly. Two portions of the boom assembly are pivotally connected to portions of the collecting system mounted on the mobile frame assembly to provide pivoting joints to allow the collecting system to draw airborne dust through the boom assembly with the boom assembly in any preselected position relative to the mobile frame assembly. Twin ducts of the collecting system meet the boom on each side of the mining machine and the ducts of the collecting system extend rearwardly along each side of the mobile frame assembly. A conveying system mounted on the mobile frame assembly receives material from the dislodging head and transports the material rearwardly of the machine. One of the twin ducts crosses to the other side of the mobile frame by passing between the conveying reach and the return reach of the conveying system and joins with the other duct so that a single fan may be used to draw airborne dust through the system.

REFERENCES:
patent: 4249778 (1981-02-01), McGuire
patent: 4380353 (1983-04-01), Campbell et al.
patent: 4463973 (1984-08-01), Westphal
patent: 4557524 (1985-12-01), Melhuish
patent: 4840432 (1989-06-01), LeBegue et al.

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