FIELD: mining industry.
SUBSTANCE: said invention relates to mining industry, in particular, to devices for separating cylinder-shaped stock from rock mass. For this purpose, the device comprises a tubular body connected to the drilling machine, which encircles the cylinder-shaped stock, and a cutting tool installed in horizontal cavity of the tubular body. The cutting tool is an abrasive curved element, rigidly mounted on the bottom end of a vertical rod located in the tubular body side vertical slot, while the rod top end is rigidly connected to the inner half-coupling of the free-wheel clutch. One end of the torsion spring is secured to the outer half-coupling of the free-wheel clutch, while the other end is secured to the tubular body cover.
EFFECT: separation of solid cylinder-shaped stock without a central hole from rock mass.
2 dwg
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