FEEDING DEVICE OF CONTINUOUS COAL MINER Russian patent published in 1997 - IPC

FIELD: mining machinery. SUBSTANCE: feeding device of continuous miner has power-operated gear-and-rack system which is made up of driven gear, pulling wheel and toothed rack with rectilinear profile of teeth. Tooth profile of pulling wheel is shaped as envelopes of rack profiles at variable gear ratio during turning of pulling wheel in one angular pitch which is determined by variable function of rack speed analog. Profiles of driven gear teeth are shaped as envelopes of profiles of rack and pulling wheel. Profiles of teeth of pulling wheel and driven gear are described by systems of relations in which taken into consideration are prescribed characteristics of meshing: exclusion of edge contacts at tops of teeth, ensuring minimal value of speed analog at collision, provision of sufficiently high value of overlapping factor. EFFECT: high efficiency. 5 dwg, 2 tbl