KJ311 Hydraulic Tunneling Jumbo(Plateau Type)

KJ311 Hydraulic Tunneling Jumbo(Plateau Type)
KJ311 Hydraulic Tunneling Jumbo(Plateau Type)
KJ311 Hydraulic Tunneling Jumbo(Plateau Type)
KJ311 Hydraulic Tunneling Jumbo(Plateau Type)
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The KJ311 Hydraulic Tunneling Drilling Rig (Plateau Type) is designed for high altitude construction. It is suitably qualified for the drilling of hard rock mine whose section falls in the range of 12-35 square meters.

Features
1. The firm flexible boom is capable of optical coverage of the section; 360° rotation and self-leveling beam make drill positioning easy. The boom can also be used for the drilling of lateral cross-cut and rock bolting.
2. The drill rig provides a good view for the operator with a balanced layout and the articulated chassis and four-wheel drive to ensure flexible, fast and safe driving in narrow tunnels.
3. The stepped piston is used for the high-frequency impacting rock drill and this can improve the transmission efficiency of the impact wave and drilling speed and reduce the consumption of drilling tools.
4. Considerable space and automatic functions enable the driver to concentrate on drilling in a safe, fast and accurate manner.
5. All the relevant parts are kept in good protection, meanwhile maintenance easily.

Technical Parameters
1.Dimensions and weight
Length 11300mm
Width 1750mm
Height 2000/3000 mm
Weight About 12000 kg /Appr. 12000㎏
Tramming speed on flat ground 10km/h
Maximum climbing capacity 25%(14°)
2. Safety protection
Noise level <100dB(A)
Lifting safety roof Meet the requirements of FOPS and ROPS
3. Chassi
Diesel engine Cummins QSB3.9-C125
/93kW/2200rpm
60KW,2200rpm
Exhaust purification Exhaust catalyst
Drive system Closed hydraulic system for four-wheel driving
Swing angle Swing of rear axle: ±10°
Tires 11.00-20 
Steering mechanism Articulated steering: ±40°
Travelling braking Two-circuit hydraulic brake
Parking braking Wet multidisc brake of reducer
Fuel tank 60L
4. Drilling system/Electric hydraulic power unit
Rock drill 1×HC50/R38 1×HC109/R38 1×HC95LM/R38
Impact power 13kW 18.8kW 21kW
Impact flow 105L/min 135L/min 100-120L/min
Impact pressure 130bar 135bar 180-200bar
Maximum rotary pressure 150bar 150bar 210bar
Impact Frequency 62Hz 47Hz 62 Hz
Torque 325Nm 780Nm 764Nm
Hole diameter Φ32-76mm Φ42-102mm Φ42-102mm
Beam rotation 360°
Feed extension 1600mm
Model of drill boom K 26F
Form of drill boom Self-leveling
Boom extension 1200mm
Motor(Plateau type) 55kW 75kW
Impact /Feed/ Positioning Axial variable displacement piston pump
Rotation Gear pump
Filter fineness 10µ
Hydraulic oil tank 240L
Hydraulic cooler Water cooler
Working voltage 380V
Frequency 50Hz
Starting method Star-triangle
Cable reel 1*F440
Length of reel cabling 100m 80m
Outer diameter of cable Φ28mm Φ32mm
Cable specifications 3×35+3G6 3×50+3G6
5. Air & water system
Air compressor 1*JN5
Capacity of air compressor 0.5m³/min
Pressure 6-8bar
Device of shank lubrication Electronic pulse lubrication pump
Air consumption of lubrication 0.3m³/min
Oil Consumption of lubrication 180-250g/h
Water pump 1xCR3 1xCR5
Power 1.5kW 5.5kW
Capacity of water pump 3m3/h 6m3/h
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