CROWN BIT REMOVAL FROM ROD

摘要

FIELD: mining.SUBSTANCE: claimed method comprises the locking of rod with crown bit by mid element and the transfer of percussion load thereto from the anvil block. Percussion loads from anvil block are applied crown nit section located between its end and that of the drill rod. Note here that blows are delivered at alternating frequency.EFFECT: higher efficiency of removal.2 cl, 1 dwg