Down the Hole Drilling Rig

The down-the-hole drilling rig is to make the impactor dive into the hole in the process of rock drilling to reduce the energy loss caused by the transmission of the impact energy transmitted by the drill rod, thereby reducing the influence of the hole depth on the rock drilling efficiency. DTH drilling rigs have always been the best-selling machinery of YG Machinery. In addition, there are rock drills, portable water well drilling rigs, backpack drilling rigs, truck-mounted water well drilling rigs, crawler drilling rigs, etc. Please contact us for the latest prices!【WhatsApp/WeChat/Phone/Skype】+86 136 1385 6800

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Types of Down-the-Hole Drilling Rigs for Sale

Roll Column

The down-the-hole drilling rig is an impact rotary drilling rig. Its internal structure is different from that of a general rock drilling machine. Its gad distribution and piston reciprocating mechanism are independent, an impactor. The front end is directly connected to the drill bit, and the back end is connected to the drill pipe. During rock drilling, the impactor sneaks into the hole, and the piston (hammer) in the impactor reciprocates against the shank through the gas distribution device (valve), so that the drill bit impacts the rock at the bottom of the hole. The high-speed rotation of the impactor in the spot is realized by means of a single rotary mechanism, that is, a motor outside the hole or a pneumatic rotating device, which is connected to the drill pipe at the back of the impactor. The power of the rock produced during drilling is washed out of the hole by the air-water mixture, which is injected into the impactor through the center of the drill pipe by the power exhausting mechanism, and then enters the bottom of the hole through the air through the cylinder body of the impactor.

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FY Series Crawler DTH Drilling Rig:

Model	FY180	FY200	FY260	FY300	FY400	FY600
Total Weight(kg)	3800	4600	6200	8800	8700	12000
Dimension(mm)	3800*1550*2350	3800*1600*2450	3900*1950*2550	4350*1850*2750	5050*2100*2800	5400*2100*2850
Hole diameter (mm)	130-254	140-325	140-325	180-325	140-325	140-350
Hole depth (m)	180	200	260	300	400	600
Disposable drilling depth (mm)	3000	3000	3000	6000	6000	6600
Walking speed (km / h)	2.5	2.5	2.5	2	2.5	2.5
Climbing ability (Max.)	30	30	30	30	30	30
Distance off ground (mm)	250	250	250	250	250	250
Working pressure (Mpa)	1.7-2.5	1.7-3.0	1.7-3.0	1.7-3.3	1.7-3.0	1.7-3.5
Air consumption (m3 / min)	15-27	17-35	17-35	23	17-35	17-35
Matching power (kW)	42-65	65	85	85	95	115
Rotational speed (rpm)	48-70	50-70	40-70	55-115	45-75	45-110
Rotational torque (N.M)	4200-5600	5000-6500	7000-9000	7200-8500	8500-10000	8500-10500

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XYD Series Crawler DTH Drilling Rig

Model	XYD-130	XYD-180	XYD-200
Drilling Depth (m)	130	180	200
Open Drilling Diameter (mm)	220	220	325
Final Hole Diameter (mm)	75	75	75
Drill Pipe Diameter (mm)	42-60	42-60	42-60
Drill Pipe Inclination (°)	90-75	90-75	90-75
Power (kW)	13.2	13.2	15
Weight (kg)	3350	3400	3600
Dimensions (mm)	3800*1950*2700	3800*1950*2700	3800*1950*2700
Vertical Axis Speed (r/min)	142 285 570	130 300 480 730 830 1045	64 128 287 557
Vertical Axis Travel (mm)	450	450	450
Crawler size	350*90*48mm	350*90*48mm	350*90*48mm
Crawler angle(°)	20	20	20
Moving speed(km/h)	10	10	10
Landing leg height(mm)	1300	1300	1300
Rated Load(t)	18	18	18
Effective Height	6.5	6.5	6.5
Tower Specifications (mm)	73	73	73
Model	160L/min	160L/min	160L/min
Max Pressure (Mpa)	1.3	1.3	1.3
Reciprocations No. (times/min)	165	165	165
Suction Pipe Diameter	Φ51mm*4.5m	51mm	51mm
High-Pressure Pipe Diameter	Φ32mm*6m	32mm	32mm

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Portable DTH Drilling Rig:

According to the walking mode, it can be divided into small-legged down-the-hole drilling rig machines: SKD70-100-120, SKQ70-100-120, and large crawler-type down-the-hole drilling rig machines: SKL100T 130/ SKM150T 153/SKH320. According to the working power, it is divided into gas-electric linkage and full-pneumatic. Wind pressure can be divided into low pressure, medium pressure, and high pressure. According to the hydraulic power configuration of the drilling rig machine, it can be divided into diesel, electric, and dual-use and electric. If you are interested in our deep hole drilling machine, you can send us an email from the inquiry button for a quotation.

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The Principle of Use DTH Drilling Rig Installation and Preparation:

1. Prepare for the drilling of a rock cavern, the size of the cavern can be determined according to the method of drilling. Generally, when the horizontal hole is drilled, the height of the cavern is 2.6-2.8m. The width of the cavern is 2.5m in the case of the upper hole, the downward hole, or the inclined hole and the height is 2.8m.
2. Lead the air-water pipe and lighting circuit to the working face for later use.
3. According to the requirements of the design of the hole, the pillars are erected firmly. The upper and lower ends of the pillars are to be covered with wooden boards. The horizontal shaft and the snap ring are mounted on the pillars according to a certain height and direction. The machine is lifted by a hand winch and fixed on the pillars at the desired angle. Then the whole direction of the drill shall be adjusted.

Check Before Working:

1. When starting work, carefully check whether the gas-water pipeline is firmly connected and whether there is no leakage phenomenon.
2. Check whether the oil injector is full of oil.
3. Check whether the screws, nuts, joints and other parts of each part have been tightened and whether the column is pushed firmly.

Drilling Operation Program:

When opening the hole, start the motor first and push the handle of the manipulator after the transfer is expected. Make it get the proper propulsion, and then pull the handle of the control impactor to the working position. After rock drilling, the water valve can be opened to keep the gas-water mixture at an appropriate ratio. Perform normal rock drilling rock. When the advancement work causes the mast to move into contact with the holder, a drill rod is drilled. To stop the motor running and stop supplying air to the impactor, send water, insert the fork into the drill rod groove of the holder, make the motor reverse the slide back, disconnect the joint from the drill rod, and then connect the second drill rod, press this to cycle and work continuously.

6 Characteristics of Down the Hole Drilling Rig:

1. The impact energy loss does not increase with the lengthening of the drill rod, the deep hole of a large diameter can be drilled.
2. The noise of the working face is greatly reduced.
3. The drilling speed is fast, the mechanization degree is high, the auxiliary working time is less and the working rate of the drilling rig is improved.
4. Mobile and flexible.
5. The quality of the drilling is high.
6. A rock that can be drilled medium or hard medium( f≥8 ).