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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