Down-the-hole drilling rigs can drill holes in rocks of medium-hard or above (f≥8). Like the rock drill, it has the process of impacting, rotating, discharging, and advancing the rock drilling hole. The difference is the impact mechanism of the DTH drilling rig. The extension and continuous advancement. The DTH drilling machine is named after the impactor dives into the hole, and has the following advantages in use:
1. There is no energy transmission loss, the impactor directly acts on the drill bit, no drill pipe is needed to transmit impact energy, and the drilling speed is not affected by the hole depth.
2. The hole is straight, the drill pipe has high rigidity, does not bear impact force, only transmits torque, and the transmitted shaft pressure is very small. During decompression drilling, there is no need to transmit shaft pressure at all, so the drill pipe is not easy to bend and deform. The blast hole is straight and smooth, especially when there are cracks in the rock, the bedding is inclined or the rock hardness changes, it is better than other drilling methods.
3. The slag discharge is clean, and the motive medium can flush the blast hole after the work is done, which is cleaner than other drilling methods, avoiding over-drilling.
4. The noise is small because the impact is carried out at the bottom of the hole, it is smaller than the top hammer type.
5. Good adaptability. Except for very soft formations, DTH drills are in the best working condition in all rock tissues, and the drilled hole diameter and hole depth are more than top hammer rock drills.
Application of Down-the-Hole Drilling Rig
Down-the-hole drilling tools mainly include DTH drilling machines, down the hole drilling pipes, down-the-hole impactors, and down-the-hole bits. At present, DTH drilling rig tools are widely used in construction sites such as open-pit and underground mines, quarries, hydropower projects, water well drilling, mineral exploration, rock anchoring, geothermal excavation, and subway engineering excavation side pile support. Because the down-the-hole drill has a series of characteristics such as high drilling straightness, smooth hole wall, good rigidity of drill pipe and impactor, no dependence on high axial thrust, unlimited drilling depth, low equipment investment, and easy maintenance. Now contact us to get a cheap DTH drilling rig factory price.
Down-the-Hole Drilling Rig Manufacturer
YG Machinery is a professional engineering machinery manufacturer, such as water well drilling rigs, core drilling rigs, anchor drilling rigs, hydraulic rock splitter, pile breaker, shot blasting machine, automatic sandblasting machine, concrete road cutting machine, concrete trowel machine, floor grinding machine, etc., If you are looking for down the hole drilling for sale, please leave your message.
























































