In the middle of the 220 rotary drilling rig, sometimes the drill pipe slipped down 5~6 meters at work, as if the rope was broken. What's the matter?
The first is when the card drill rod, then the clamping rod parts will appear suddenly from the above phenomenon. Generally, the drill rod is worn out, and the biggest damage to the rod is the power head and the steel wire rope.
If the wire rope drops suddenly, it is the power head faultThe drill pipe suddenly slipped, like the first floor, and the inside of the drill pipe was badly worn
