DTH Drilling Machine

YG DTH drilling machine for sale
YG DTH drilling machine for sale

YG DTH Drilling Machine Manufacturer

The series of DTH drilling machines produced by YG Machinery has wide application in mining, water conservancy projects, photovoltaic piles, urban foundation pits, highway and railway construction, slope support, etc. YG crawler type DTH drilling machine has completed the design of a full range of low wind pressure (YGL), medium wind pressure (YGM), and high wind pressure (YGH) products. If you are looking for reliable DTH drilling rig manufacturers, congratulations on finding YG drilling equipment company. We will be your most ideal DTH drilling rig supplier.

YGL100 DTH drilling machine factory
YGL100 DTH drilling machine factory

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Hot Selling Crawler DTH Drilling Machine List

Model Wind Pressure Features
YGL100A Low wind pressure Diesel engine, ten two-meter 60 drill pipes
YGL100T Low wind pressure Diesel engine, drill horizontal holes can be drilled
YGL130 Low wind pressure Diesel-electric, dual-purpose 22Kw motor, diesel engine+ten two-meter 60 drill pipes
YGM150T Medium wind pressure Four-cylinder diesel engine+76 drill pipe 20 meters, the horizontal hole can be drilled, single motor
YGM150T Medium wind pressure Four-cylinder diesel engine+76 drill pipe 20 meters, the horizontal hole can be drilled, double motor
YGM153T Medium wind pressure Four-cylinder diesel engine,55Kw motor,76 drill pipes of 20 meters, horizontal holes can be drilled
YGM180 High wind pressure Four-cylinder turbocharged diesel engine,76 drill pipe 20 meters
YGH300 High wind pressure High wind pressure model, specifically for rock formation with high hardness
YGH320 High wind pressure Four-cylinder turbocharged diesel engine,76 drill pipe 20 meters

150T single motor crawler DTH drill machine
150T single motor crawler DTH drill machine

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150T double motor DTH drill machine
150T double motor DTH drill  carriage

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What is the Working Principle of the DTH Drill Equipment?

Everyone should know about the down-the-hole drill carriage and even have used it. DTH drilling equipment is used in many constructions. Because the down-the-hole drill rigs are mostly used in various projects such as mining. Building foundation excavation, water conservancy, power stations, building materials, transportation. And national defense construction. Compared with common rock drills, DTH drill equipment has the characteristics of deep drilling hole, large drilling diameter, high drilling efficiency, and wide application range. The crawler down-the-hole drill machine is currently a large-scale rock drilling equipment in general use.

The down-the-hole drill rigs are actually rotary percussion drill equipment. The impactor is directly submerged into the bottom of the hole to drill the rock. The impact of power transmission loss is small, and the drilling efficiency is extremely high. But do you know how it works? Below, down-the-hole drilling rigs manufacturer – YG Machinery will show you the working principle of down-the-hole drilling rigs.

YG crawler DTH drill equipment factory direct sale
YG crawler DTH drill equipment factory direct sale

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DTH Drilling Equipment Working Process

The rock drilling principle of a down-the-hole drill machine is the same as a heavy-duty rock drill rig. The difference is that the impact mechanism of the down-the-hole drill – a down-the-hole impactor. It is installed at the front end of the drill rod, and at the bottom of the manhole. The piston directly impacts the drill bit and continues to advance as the drilling extends. So the DTH drilling machine got its name from the bottom of the impactor DTH.

In the drilling rig, the impact mechanism piston completed the impact action of the impact drill bit. The metallurgical equipment swing mechanism realizes the rotation action. And the pressure regulating mechanism completes the adjustment of the propulsion force to efficiently complete the drilling work. The operating mechanism controls various actions. In addition, the supporting mechanism can be a bracket or a drill carriage. The rock powder formed during the drilling process is discharged out of the hole by the gas or water flowing between the drill pipe and the hole wall.

DTH Drilling Energy Loss

Unlike the connecting rod drilling of the rock drill, the energy loss of the down-the-hole drill increases with the increase of the drill rod joints. Because the drill rod of the down-the-hole drilling rig does not transmit impact energy, the impact energy loss is small, so deeper holes can be drilled. As the impactor works deep into the hole, the noise on the working surface is greatly reduced. And the drilling accuracy is high.

The above is an introduction to the working principle of the down-the-hole drill rig, I hope it will be helpful to everyone. If you have any questions, please feel free to contact us.

YGH320 drill rig console
YGH320 drill rig console

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Basic Setting

The pressure of all the company’s drill rigs has been set before leaving the factory:

YGL type low-pressure crawler DTH drilling machine: left and right walking pressure: 13~14MPa, advancing pressure 10~11MPa, rotation pressure 8~9MPa.
YGM type medium-pressure down-the-hole drill rig: left and right walking pressure: 17~18MPa, advancing pressure 12~16MPa, rotation pressure 10~14MPa.
YGH high-pressure DTH drilling machine: left and right walking pressure: 22~23MPa, advancing pressure 14~18MPa, rotation pressure 12~16MPa.

YG DTH drilling machine manufacturer price
YG DTH drilling machine manufacturer price

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DTH Drilling Rig Power Configuration

Among hot selling, the YG DTH drilling machine list, the YGL130, and YGM153 DTH drilling rigs are dual-power (diesel engine + electric motor) drilling rigs. The motors are all four-stage motors with a speed of 1450 rpm. YGL130 power is 22kw and YGM153 power is 55kw.

Diesel tank volume: common for diesel tanks below YGM153, with a volume of 70L. 1L diesel weighs about 0.86kg. Therefore, 70L diesel weighs about 60kg. YGH300 DTH drilling machine diesel tank volume is 220L, weighs about 189kg.

Diesel engine fuel ratio: 0.235Kg/h/Kw. So the daily diesel consumption of the diesel engine can be calculated based on the daily working hours (hours) and the rated power of the diesel engine.

Check the oil level of the hydraulic oil tank every time before starting the diesel engine. And diesel tank oil level, diesel engine water tank water level. The important thing is that all the control valve handles must be returned to the neutral position to ensure that the diesel engine starts under no load. After starting, let the diesel engine run at idle speed for 5-10 minutes, and then load.

down the hole drill rig configuration
down the hole drill rig configuration

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Down The Hole Drilling Machine Hydraulic System

All hydraulic systems are composed of four parts. Hydraulic power components, hydraulic control components, hydraulic actuators, and hydraulic auxiliary components.

Hydraulic power components: Hydraulic pumps, hydraulic motors. All hydraulic pumps in our company use left-handed pumps (that is, from the end of the hydraulic pump shaft, the pump shaft rotates counterclockwise). YG Machinery now uses a 0.5S steel ball motor with planetary reducer and axial plunger coaxial motor (plunger motor). We adjust the motor pressure before leaving the factory. Therefore, you don’t need to adjust it by yourself.

Hydraulic control components: All kinds of hydraulic valves (not only refer to multi-way reversing valves. At present, our company’s drilling rig hydraulic system has used multi-way reversing valves, flow valves, safety valves, pressure reducing valves, and one-way valves.

Hydraulic actuator: Hydraulic cylinder.

Hydraulic auxiliary components: Hydraulic container, oil suction filter, oil return filter. Respirator (hydraulic air filter), liquid level gauge, hydraulic oil radiator, etc.

DTH drill rig tunnel construction site
DTH drill rig tunnel construction site

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Why Choose YG DTH Drilling Rig Manufacturer?

As one of the most professional DTH drilling rig manufacturers. YG Machinery has developed and produced a series of down-the-hole drilling rigs of different models. And almost all have become hot-selling models. In addition, our down-the-hole drilling rigs are sold to many countries and regions in the world. For example, South Africa, Papua New Guinea, Indonesia, the United States, Canada, Singapore, Brazil, Nicaragua, etc. Guaranteed quality, competitive price, and considerate after-sales service are important reasons why Yugong Machinery has always been in the leading position in the industry. If you are looking for DTH drilling rig manufacturers, we will be your ideal choice.

Drilling Rig Accessories

We have a series of drilling rig accessories for sale to match the use of the drilling rig. For example, drilling pipe, drill bit. mud pump, triplex mud pump, industrial air compressor, screw air compressor, etc.

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