Cutting drum

Details Cutting drum Cutting drum

E - Fixed Constructions

21

C

262/77

E21C 35/23 (2006.01) E21C 25/10 (2006.01)

Patent

CA 1191514

ABSTRACT A cutting drum for a mining machine has a helical vane secured to a tubular body, closure rings, and cutter bit holders arranged upon the closure ring, and upon the peripheral areas of the vane, for the accommodation of cutter bits with which spray nozzles are associated. At least one liquid supply channel in the tubular body connects to at least one distributing channel running in the peripheral direction of the closing ring or vane. Connecting channels for the individual nozzles are in liquid-conducting communication with the relevant distributing channel which is arranged at a considerable radial distance from the outer surface of the tubular body in the direction of the nozzles. The distributing channel consists of a groove machined into one side of the lateral wall of the vane or the said closure ring and closed off from the outside by a cover, if necessary with a bridging channel extending radially and carrying the spray liquid from the liquid supply channel to the distributing channel, the radial bridging channel being also closed- off from the outside by a cover. The covers of the distributing channel and on the bridging channel are arranged to be detachable without destruction of material, e.g. by means of threaded fasteners.

432693

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