FIELD: mining.
SUBSTANCE: device for local drilling of reactor setting graphite column tracts includes bearing rod with rotary drive, driven shaft, mechanism of rotation and simultaneous supply of cutter. The bearing rod is connected through a shaft disposed inside with a cylindrical cutter head consisting of three conical wheels, one of which is integral with the shaft and fixed in the housing on bearings, and the second conical wheel is meshed with the first one and is mounted on the axis perpendicular to the first wheel axis. The third conical wheel mounted on the needle rollers on the axis, which has a possibility to pivotally oblique from the axis of the rod and is coupled to the second wheel, is connected to the deflecting cutter axis, which is pivotally connected to a rod that is moved along the shaft axis by a screw-nut pair.
EFFECT: invention makes it possible to carry out local drilling of graphite column tracts, excluding the impact on the graphite masonry.
3 dwg
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