FIELD: mining.
SUBSTANCE: invention relates to mining industry and can be used for drilling blast holes in open pits and wells, as well as for driving of process wells, including drilling complex-structure rocks. Device for well drilling includes a housing, rotary-feed mechanism for rotor drilling column, which includes coaxially located stator with coils and rotor installed inside stator. Circular sections of magnetic conductor with coils of stator winding inside said sections envelope cylindrical surface of rotor of drilling column so that their axes are aligned to create a minimum working air gap. Rotor is equipped with ratchet mechanism comprising pressure rollers on their shafts, their axes perpendicular to rotor axis, having one-way rotation in supports.
EFFECT: higher efficiency of drilling machine, longer service life of drilling tool due to higher efficiency and increased speed of control of operating modes during drilling.
1 cl, 3 dwg
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