STAND FOR INVESTIGATION OF ROCK DRILLING PROCESSES Russian patent published in 1994 - IPC

Abstract RU 2005879 C1

FIELD: mining industry. SUBSTANCE: stand includes loading hydraulic cylinder, drill pipe with rock cutting tool, rock block, drill pipe rotary mechanism. Rock block is located on piston of taking-up hydraulic cylinder communicating with loading cylinder. Piston of taking-up hydraulic cylinder has sectional area larger than that of piston of loading hydraulic cylinder, and rod of piston of loading hydraulic cylinder is made integral with rock cutting tool. EFFECT: higher accuracy of experiment due to provision of invariable axial load during drilling. 2 dwg

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RU 2 005 879 C1

Authors

Dvornikov L.T.

Prjadko Ju.A.

Dates

1994-01-15—Published

1992-03-30—Filed