KJ311 Underground Mining Drill Rigs and Tunneling Jumbo to tunneling operation at the section of 12-35m2 in hard-rock mine. The drill boom has optimal section covering shape and the propelling beam rotates for 360 degrees and automatically levels off for easy location of the drill hole. Meanwhile, the drill boom is also used for rock cross-cut and drilling with anchor rod.
The tunneling jumbo is arranged to provide good field of view for the driver. Four-wheel drive articulated chassis ensures that the tunneling jumbo travels flexibly, fast and safely in narrow roadway.
Technical Parameters of KJ311 Underground Mining Drill Rigs and Tunneling Jumbo
Dimensions versus Weight |
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Length |
11300mm |
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Width |
1750mm |
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Height |
2000/3000mm |
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Weight |
12000kg |
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Travelling speed, level |
10km/h |
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Climbing capacity |
0.25 |
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Security |
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Noise level |
<100dB(A) |
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Lifting safety ceiling |
It conforms to the requirement to prevent rolling and falling rock. |
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Drilling system |
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Rock drilling |
1×HC50/R38 |
1×HC109/R38 |
Impact power |
13kW |
18.8kW |
Impact flow |
105L/min |
135L/min |
Impact pressure |
130bar |
135bar |
Maximum rotation pressure |
150bar |
150bar |
Frequency |
62Hz |
47Hz |
Torque |
325Nm |
780Nm |
Aperture |
32-89mm |
45-102mm |
Rolling of the propelling beam |
360° |
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Compensative travel of propelling beam |
1600mm |
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Drill boom |
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Model |
K26F |
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Form |
Automatic leveling |
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Extension of drill boom |
1200mm |
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Electric Hydraulic pump station |
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Electric motor |
45kW/55kWThree phase |
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Impact- propelling- drill boom |
Variable axial piston pump |
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Turn around |
Gear pumps |
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Filter precision |
10μ |
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Hydraulic oil tank |
240L |
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Hydraulic cooler |
Water cooler |
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Working pressure |
380V |
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Frequency |
50Hz |
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Starting method |
Star - triangle |
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Cable reel |
1×K440 |
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Cable capacity of the reel |
100m/80m |
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Outer diameter of cable |
Φ28mm/Φ32mm |
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Specifications of cable |
3×35+3G6+2×1.5 |
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3×50+3G6+2×1.5 |
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Wind and water route system |
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Air Compressor |
1×JN5 |
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Capacity |
0.5m3/min |
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Pressure |
5-7bar |
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Lubricating device of drill rod tail |
Forced feed lubricating can |
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Gas consumption for lubrication |
0.3m3/min |
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Oil consumption for lubrication |
180-250g/h |
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Pump |
1×CR3 |
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Power |
1.5kW |
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Pump Capacity |
3m3/h |
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Chassis |
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Diesel |
BF4L201153kW, 2800rpm |
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Tail gas clean-up |
Tail gas catalyst |
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Transmission |
Closed-wheel drive traveling system |
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Swinging angle |
The rear axle swings for ±10° |
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Tire |
11.00-20 |
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Steering mechanism |
±40°articulated steering |
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Travel brake |
Double loop hydraulic brake |
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Parking brake |
Multi-disk wet brake for reducer |
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Fuel tank |
60L |