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DFQ-400A DTH Drilling Machine
1. Drill Depth:400m
2. Drill Diameter:115-305mm
3. Drill Pipe Length:3000mm
4. Drill Pipe Diameter:76/89mm
DFQ-400A multi-functional drilling rig is a portable, efficient and multifunction crawler mounted drilling rig. It is mainly used in drilling water well, monitoring wells, geothermal projects and other deep holes, especially suitable for the high efficiency required concentrated geothermal projects working.

This machine can drill in various ground conditions with air compressor and DTH hammer drilling . It used full hydraulic controlling for drill tower lifting, drill rod installing and uninstalling, rotary and feeding, standing legs, hoist and moving, greatly reduce labor cost, improving working efficient and project quality.

Main feature:
1. Engine system adopts popular brand. Diesel engine drives full hydraulic system.

2. High efficient DTH hammer drilling. Air compressor offers air supply and washing slags. Different hammer and DTH bit are equipped with different drilling diameter.

3. Self-propelled crawler structure with easy mobility. Crawler is steel type with long service life and wide applications.

4. Rotation uses USA brand motor, double-point driving, small volume and big torque. Rotary speed can be adjusted with working condition, efficiently improving DTH hammer speed.

5. Propelling and lifting adopt oil cylinder and chain structure, safe and stable. Drilling axial compression and speed can be adjusted to improving efficiency.

6. Hydraulic system is equipped with independent hydraulic oil heat radiator, ensuring smooth working in hot weather.

7. Hoist can lift 0.8t drill tools and accessories.

8. Four high standing legs can balance drill rig quickly, and finish loading work.

9. Drill rod elevator and hydraulic winch make it safe, convenient and quick to load drill rod, reducing labor force and improving working efficiency.

10. Unique centralizer design, combines with gradienter, ensuring open hole accuracy and verticality.

11. Pressure system is specially designed with high pressure oiler, greatly lengthen DTH tool service life.

12. Compensation skateboard protects drill rod screws, improving drill rod life.

13. Air seal is with special structure and wear compensation, good quality and durable usage.

14. Power hear assembly moving is changing from sliding to rolling, with better locating and longer life.
No. Item Parameter
1 Drilling caliber φ115-305
2 Max. drilling depth 400m
3 Diameter of drill pipe Φ76/89
4 Unit Length of drill pipe 3000mm
5 Work pressure 1.2-2.5 MPa
6 Gas consumption 16-34 m³/min
7 Impacter DHD360\380
8 Diesel engine 84Kw/2200rpm
9 Electric motor 55Kw/1480rpm
10 Gradeability 20°
11 Walking speed 0~2.2 Km/h
12 Ground clearance 265mm
13 Leg cylinder stroke 800 mm(1500mm)
14 System pressure 20MPa
15 Propulsion 7.5 tonf
16 Lifting force 13 tonf
17 Fast lift 16m/min
18 Fast propel 30m/min
19 Hydraulic winch lift 1000kg
20 Rotary torque 5000-6000 N.m
Speed of spindle Fast 70-120 rpm
Slow 0-65 rpm
22 Weight 6500 Kg
23 Dimension 5400*2100*2300 mm
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