JK660
Surface drilling equipment
- Borehole diameter: 90-160mm
- Drill rod length: 3m
- Walking speed: 2km/h, 3km/h
- Optional: Hydraulic dry dust collector/ wet dust collector
Integrated Hydraulic Crawler Mounted DTH Drilling Rig
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JK660 Integrated Hydraulic Crawler Mounted DTH Drilling Rig
The integrated DTH drilling rig features robust automation capability and high drilling efficiency. The integrated design of the drilling rig and the air compressor addresses the challenge of travelling and remote control of air compressor, compressed air loss and high labor costs. Equipped with a high-performance hydraulic dust collector, the rig offers an environmental-friendly mining solution that meets the environmental protection requirements.
Applications
The integrated drilling rig is mainly used for hydro-power engineering, open pit mining, road construction and blasting operation of national defense engineering.
Technical Specifications
| Model | JK660 | ||
| General | Weight | kg | 13500 |
| Length | mm | 8600 | |
| Width | mm | 2400 | |
| Height | mm | 3350 | |
| Undercarriage | Track width | mm | 300 |
| Ground clearance | mm | 370 | |
| Track oscillation | ° | ±10° | |
| Walking speed | km/h | 2 (low speed) 3 (high speed) | |
| Grade ability | ° | 27° | |
| Engine | Model | CUMMINS QSC8.3-C260-30 | |
| Type | Water-cooled 6-cylinder EFI diesel engine | ||
| Rated power | kW/rpm | 194/2100 | |
| Fuel tank capacity | L | 400 | |
| Air compressor | Brand | Atlas Copco | |
| Working pressure | bar | 17 (high pressure) | |
| Max. free air delivery (FAD) | m³/min | 17 | |
| Rotary motor | Rotation rate | rpm | 0-140 |
| Max. rotation torque | Nm | 3300 | |
| Feeding method | Motor chain | ||
| Feeding force | KN | 12 | |
| Lifting force | KN | 21 | |
| Feeding stroke | mm | 3990 | |
| Feed extension | mm | 1100 | |
| Drill rod changer | Drilling diameter | mm | Ø90-Ø160 |
| Rod capacity | m | 6 1 | |
| Rod length | m | 3 | |
| Rod diameter | mm | 76/89 | |
| Dust collector | Hydraulic dry dust collector (optional: wet dust collector) | ||
Main Components
- Rotation unit
- The rotation unit delivers large torque and high reduction ratio which contribute to high transmission efficiency, stable operation and low failure rates. The great performance lowers maintenance costs.
- It reduces the possibility of drill bits getting stuck in unconsolidated formation and increases the success rate of drilling holes.
- High molecular liner plates are wear-resistant and durable with no need of oiling.
- Manganese steel-framed guide rail is added to protect the mast from wear.
- Optional dual-drive high-low speed rotation system is available.
- Automatic rod changer
- It is simple to operate the automatic rod changer to control rod storage, rod loading, unloading and movement of machine clamp. Adopting a clamping design, the changer can easily load and unload the rod and increase work efficiency.
- Operation panel
- All the operations of the rig can be realized by the integrated control system.
- The control system enables rapid feeding and lifting. The feeding force is adjustable based on different environments, which reduces drilling time and increases efficiency.
- Undercarriage
- The undercarriage adopts a robust design of four wheels and one track. Widened tracks enable smooth travelling and strong climbing capability to support heavy-duty drilling jobs.
- 4 leveling jacks are designed to angle to 10 degrees left and right to support drilling work in rough terrains. It supports high and low speed shifts to realize flexible movement between drilling sites.
- Maintenance-free feeding unit
- Hydraulic-mechanical lock system supports stable torque output of hydraulic motors while avoiding hydraulic leak and sliding.
- Dust collector
- The hydraulic dust collector with a sliding cover that collects dust delivers stable and efficient performance, which extends the rig’s service life and ensures a clean working environment.
- Power system
- High-power turbocharged direct injection engine with water cooling function delivers reliable performance and is energy-saving.
- Two-stage air filter ensures intake of clean air and reduces failure rates of engine.
- Imported hydraulic pumps and valves feature pressure resistance, large output, high quality and long service life.
- Air compressor
- Atlas Copco air compressor with working pressure of 17 bar and air delivery of 17 m3/min demonstrates reliable performance to support drilling through a variety of rocks.
What is down-the-hole drilling method?
DTH drilling is one of the drilling methods for deep foundations. Powered by hydraulic pressure, the drilling rods transmit energy to the drilling bits to break hard rocks into small cuttings and dust that are evacuated by air.
What are the applications of DTH drilling method?
Utilizing hydraulic power and air, DTH drilling method is suitable for drilling holes in hard rocks, such as granites and basalts. With excellent air compressor, it greatly improves drilling efficiency.
What is the difference between rotary drilling and down-the-hole drilling?
Both rotary drilling and DTH drilling are common surface mining methods. However, DTH drilling methods enjoys the advantage of high drilling efficiency, especially drilling through hard rocks.
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