1. The down-the-hole drilling rig uses a motor through a
high-performance reducer as the rotary power; a cylinder is used as
the propulsion power. The hydraulic system is omitted, so the
mechanical efficiency is high, the cost is low, and the performance
is stable.
2. With anti-jamming protection, when the drilling tool is jammed,
the motor is not easy to burn, and the reducer is not easy to be
damaged.
3. It is light and easy to move. The weight of the down-the-hole
drilling rig is less than 500Kg, and it can be broken down into
three pieces. It is convenient to move and mount the machine.
4. Using rolling carriage, the track is not easy to wear.
5. The down-the-hole drilling rig adopts semi-automatic disassembly
of drill rods, which has high working efficiency.
