Underground blast hole drilling machine

作者： Cannon Robert E , Pehoski Walter L

DOI:

关键词: Mechanical engineering 、 Hole opener 、 Run-out 、 Drill string 、 Drill 、 Roller reamer 、 Engineering 、 Drilling 、 Head (vessel) 、 Torque

摘要: A mobile drilling machine in which a support vehicle of the hydrostatic type provides power supply for majority hydraulic components on head frame, latter being adjustable through two axis pivot with its mounting frame any angle drilling. The mounts drill advances and withdraws rods or string operation. It supplies rotational torque to pneumatic air passage therethrough tool at end major portion force is applied. This isolates these forces from minimize wear apparatus.