


1. Product Introduction
Model QK-70 electric down-the-hole (DTH) drilling rig is a newly developed multi-purpose rock drilling device independently designed by our company. It is widely used in small and medium-sized mines, transportation, national defense, water conservancy, rock excavation and other construction projects. It is especially suitable for rugged and uneven terrain where other drill carriers fail to work properly.
This rig features simple structure, easy operation, low cost and energy conservation. It is capable of drilling both vertical and horizontal blast holes. Moreover, it has a low center of gravity and excellent disassembly performance, making relocation and transportation extremely convenient.
2. Product Features
1. Simple structure, easy operation and affordable price.
2.Low center of gravity and easy disassembly for convenient transport; perfectly suited for bumpy rugged landforms and virgin terrain.
3.Low air consumption of the impactor, requiring an air compressor with small displacement, energy-saving and cost-effective.
4.The rotary reducer delivers high torque and maintains high reliability under severe vibration and heavy load conditions.
5.The electrical system is equipped with overload and phase-loss protection to ensure stable and reliable rig operation.
6.A pressure reducing valve is fitted on the feed system, which allows adjusting feed force according to different rock formations to achieve optimal rock drilling performance.
3. Product Parameters
| Applicable Rock Hardness Coefficient | F=6~20 | Working Air Pressure | 0.5~0.8MPa |
| Drilling Diameter | 68~80mm | Cylinder Diameter | 90mm |
| Max Drilling Depth | 15m | Motor Power | 3KW |
| Single Feed Stroke | 1000mm | Lifting Force | 4200N |
| Rotation Speed | 90r/min | Feed Thrust | 3500N |
| Air Consumption | 3.5~5m3/min | Main Unit Weight | 175Kg |
| Overall Dimension | 40*1000mm | Vertical Shaft Speed | 0-125 |
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