Rotary drilling rig how telescopic, I mean, what power so that it extends out of step by level, it extends out in a certain order?
Friction compression drill rod (abbreviation: friction rod, friction drill rod)It is generally used for drilling in soft formation, which can be used for drilling mud, soil, sand and egg (drift). The friction drill rod is usually made up of 5 sections, each of which is 13 meters long and 1~4 times longer than each steel tube. Drilling depth of about 60 meters.
The drill rod of the rotary drilling machine is now extended from the lower part of the hoist, the steel wire extends out, and the hoisting rope is retracted. But some rotary drills can be extended either by a crane or by gravity. It extends in the first order, the next second, and then the third, the last, the fourth, and the fifth. During drilling, it is stretched by gravity and bit by bit with the drilling depth. Rotary drilling rig in the multi-functional areas to improve, and it is not necessary to complex conversion can be converted to another device, it is worth studying.
The drill pipe is connected to the main hoist by wire rope, and the main hoist relaxes or tightens the wire rope to lay down (stretch out) or lift the drill rod.From outside to inside, the drill pipe can be divided into the first section, the drill pipe, and the second section...First, the first section of the drill pipe to use, and then extended second knots, in turn out of the other section of the drill pipe, and finally stretched out the innermost section, contraction when from the innermost section of the contraction.According to the characteristics of civil engineering of rotary drilling rig needs to be improved.
