| 摘要 |
FIELD: mining industry. SUBSTANCE: this drilling machine can find use in directional drilling of blast holes, degassing and prospecting holes and other technological spatially oriented holes in mining industry. Two-position two-line distributor with drive from profiled cam and spring return is installed in discharge line of hydraulic motor of drive of drilling column, two-position three-line distributor which one outer is connected to pneumatic hydraulic accumulator and which second outlet is connected to rod spaces of hydraulic cylinder of supply of drilling column is installed in pressure line. Discharge line of additional hydraulic pump has safety valve and three-position four-line distributor which has controlled throttle placed into discharge line. EFFECT: enhanced operational reliability and stability. 1 dwg |
