STAND FOR INVESTIGATION OF ROCK DRILLING PROCESSES

摘要

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