Shandong Hongrun Group (China) Co., Ltd. is located in Jining, Shandong, China, the hometown of Confucius. We are a comprehensive industry and trade integrated enterprise that values quality and reputation.
Hard Rock Drilling Machine
Down The Hole Drilling Machine Highlights：
1. Efficient Deep Drilling: Ideal for underground mining and tunneling.
2. DTH Technology: Stable drilling in hard rock.
3. Wide Use: Perfect for metal, coal, non-metallic mines, and water tunnels.
4. High Performance: High impact, wear resistance, and adjustable speed.
5. Durable: Built for long life and high productivity in tough environments.
Product Details
Main product features
Powerful DTH impact system
1.Drilling and impact: adopting the principle of down-hole impact (DTH), the impact energy is concentrated and exerted directly at the bottom of the drill bit to reduce energy loss.
2.Constant high-frequency impact: The impact frequency can be freely adjusted in the range of 500-1200 times/minute to ensure continuous and efficient drilling in hard rock formations.
Efficient power and matching design
1.Modular power unit: The hard rock drilling machine is equipped with a 70 kW diesel engine, which has high output torque and fast start-up response.
Intelligent hydraulic feed system for down the hole drilling machine
1.Thrust adjustment: The hydraulic cylinder realizes adjustment of the drill bit thrust, and cooperates with torque adjustment to achieve smooth conversion of soft and hard formations.
Sturdy and durable
1.High-strength materials: Key components (drilling frame, main support arm, impact cylinder) are made of high-strength alloy steel and heat-treated, which are impact-resistant and wear-resistant.
2.Modular disassembly and assembly: The whole machine is divided into zones, and the hydraulic pump station, rotary mechanism, impact device, etc. can be quickly disassembled and assembled, making on-site repair and maintenance more convenient.
Safe and environmentally friendly design
1.Recirculation cooling system: The hydraulic oil and engine cooling water circulation design reduces the accumulation of dust and temperature in the underground environment.
Parameter Table of Hard Rock Drilling Machine
Engine | Yuchai 70kw | Slewing torque | 2500 N.m |
Drill diameter | 90-120 mm | Slewing speed | 0-140 r/min |
drill depth | 35 m | Propulsion mode | Oil cylinder+roller chain |
Drill pipe specifications | 6+1 | Walking speed | 0-3 km/h |
Working pressure | 0.7-1.8Mpa | Ground clearance | 450 mm |
Air consumption | 10-18 m³/min | Overall size | 5550*2290*2600 mm |
The specific specifications can be adjusted at any time. If needed, please feel free to consult and I will customize them for you.
Scope Application of Hard Rock Drilling Machine
1.Underground metal mines: rock impact drilling in metal mines such as gold, copper, iron, zinc, lead, and aluminum.
2.Tunneling: pre-drilling, directional drilling, and anchor holes for water conservancy tunnels, railway and highway tunnels.
3.Geological exploration: deep geological coring, groundwater wells, and core sample collection.
4.Foundation reinforcement: rock reinforcement operations such as foundation pile holes, anchor holes, and grouting holes.
Structural Composition of Hard Rock Drilling Machine
1.Power system diesel engine: The down the hole drilling machine is equipped with a 70 kW diesel engine, equipped with dust filter and soundproof cover.
2.DTH impact device impact cylinder: made of high alloy steel, impact energy 17–32 J (adjustable); equipped with buffer spring and anti-wear sleeve.
3.Impact valve assembly: imported valve core and seal, quick response, excellent sealing performance.
4.Slewing propulsion system; hydraulic motor + planetary reducer slewing torque 300–800 N·m, slewing speed 0–150 r/min.
5.Hydraulic push cylinder: thrust 20–35 kN, with high-precision sensor to monitor thrust size in real time.
Drilling frame and support system
1. Riveted high-strength drilling frame: the main beam and cross beam are welded with Q345B alloy steel and strengthened by heat treatment.
2. Multi-section telescopic guide rail: supports adjustable tilt of 0–10°, the surface of the guide rail is treated with carbide shot peening, wear-resistant and corrosion-resistant.
Hydraulic and control system
1. Hydraulic pump group: dual pump parallel design to ensure stable oil supply for rotation and push cylinder; equipped with double filtration and three-stage cooling.
2. Electric control cabinet: The down the hole drilling machine adopts a centralized control console, optional touch screen and remote control module; integrated alarm, data display and fault diagnosis.
3. Handle operation table: located on the ground, can control impact, rotation, propulsion and walking and other actions with one button; equipped with emergency stop button.
Auxiliary System of Down The Hole Drilling Rig
1. Cooling system: hydraulic oil cooling and diesel engine cooling water circulation to keep the underground temperature within the normal operating range.
2. Lighting system: LED explosion-proof lamp group, to ensure the lighting of the underground working area, suitable for dark environment.
3. Ventilation interface: reserved ventilation duct interface, can be connected to the underground ventilation pipe to achieve ventilation.
Packaging And Transportation
1. Whole machine protection: The whole machine adopts steel frame + wrapping film for dustproof and shockproof packaging, and the exposed metal parts are sprayed with anti-rust paint and wrapped with anti-rust film.
2. Modular disassembly: The power unit, impact device, hydraulic pump group, rotary propulsion assembly, chassis, etc. can be disassembled and packaged to save transportation costs.
3. Auxiliary accessories: Drill rods, drill bits, consumables and tool kits are packed in separate wooden boxes, and operation manuals and lists of vulnerable parts are provided.
4. Transportation mode: Support road transportation and container shipping; provide packing list and packaging diagram.
5. Delivery cycle: Conventional models are shipped within 7-10 working days; customized configurations are produced and shipped within 15-25 working days.
After-sales Service
1. Warranty and maintenance; the whole machine is guaranteed for 12 months or 1500 operating hours .
2. Technical support; 7×24 hours online technical consultation and fault diagnosis.
3. Free Chinese and English operation manuals, video tutorials and maintenance guides.
4. Accessories supply; common wearing parts (impact valve core, impact cylinder bushing, drill bit, drill rod) are in sufficient stock.
FAQ
Q1: What types of ores are suitable for down-the-hole drilling rigs?
A: Suitable for metal mines (copper, iron, zinc, lead, etc.), coal mines, non-metallic mines (limestone, dolomite, etc.) and geotechnical tunneling.
Q2: How to choose the appropriate impact energy and drill bit diameter?
A: The impact energy range (17–32 J) is determined according to the hardness of the rock layer and the operating depth. Common drill bit diameters are φ89, φ115, and φ127 mm; if a larger diameter is required, please contact us for customization.
Q3: How to ensure the safety of underground operations?
A: This machine is equipped with a fire extinguishing device, LED explosion-proof lamp and ventilation interface; when operating, it is necessary to use a mining helmet, a safety belt and ventilation ducts, and follow the mine safety regulations.
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