Large bore drill for mines - uses winch and rope between top and bottom roads or reamer or power rods for full face boring

摘要

Drill for boring short large hole raises or staples is fitted with clamp and feed systems and can be used in several ways. It can work off a rope winch in the top road using a guide plug in the pilot bore, or the winch can be placed in the bottom road and the rope pulley located in the top road. The winch can also be mounted on the machine, retaining the top road pulley for rope return. The conventional head can be replaced by a reamer with change gear or reduced rev. count and/or thrust guidance is provided from behind the rods, with the machine working as a fullfacer drilling out the solid without guide plug.