KJ321 Tunnel Jumbo Drilling Rig
Features:
KJ321- hydraulic tunnelling drilling rig is suitably qualified for the drilling of tunnels whose section falls in the range of 12-45 square
meters,capable of drilling the blast hole and rock bolting in a vertical,inclined and horizontal way.
The drilling rig is fitted with the flexible boom in two symmetric rectangular coordinates,without any operation blind spot.360 rotation and
self-leveling beam make drill positioning easy;it can also be used for the drilling of lateral cross-cut and rock bolting.
The drilling rig provides a good view for the operator;balanced layout and the articulated chassis of four-wheel drive ensure the flexible,
fast and safe driving in the narrow tunnel;
The stepped piston is used for the high-frequency impacting rock drill and this can improve the transmission efficiency of impact wave
and drilling speed and reduce the consumption of drilling tools and make it in good condition;
Considerable space and automatic functions enable the driver to concentrate on drilling in a safe,fast and accurate manner;
All the relevant parts are kept in good protection,meanwhile maintenance easily.
| Dimensions and weight | Air & water system | |||||||||||||
| Length | 12000mm | Air compressor | 1*JN11 | Oil Consumption of lubrication | 2×180-250g/h | |||||||||
| Width | 2160mm | Capacity of air compressor | 1.55m³/min | |||||||||||
| Height | 2500/3300mm | Pressure | 8bar | Water pump | 1xCRI10-20 | |||||||||
| Weight | Appr. 22000kgs | Device of shank lubrication | Electronic pulse lubrication pump | Power | 7.5kW | |||||||||
| Tramming speed on flat ground | 10km/h | |||||||||||||
| Air consumption of lubrication | 2×0.3m³/min | Capacity of water pump | 10m3/h | |||||||||||
| Maximum climbing capacity | 25%( 14°) | |||||||||||||
| Safety protection | Chassis | |||||||||||||
| Noise level | <100dB(A) | Diesel engine | Cummins QSB3.9-C125,93KW,2200rpm | Travelling braking | Hydrostatic braking | |||||||||
| Lifting safety roof | Meet the requirements of FOPS and ROPS | Exhaust purification | Exhaust catalyst | Parking braking | Machanical Brake | |||||||||
| Drive system | Hydraulic Torque Converter+Gear Pump | Fuel tank | 120L | |||||||||||
| Drilling system | Electric hydraulic power unit | |||||||||||||
| Rock drill | 2×HC50/R38 | 2×HC95LM/R38 | Motor | 2x45kW | 2x75kW | |||||||||
| Impact power | 13kW | 24kW | Impact /Feed/ Positioning | Axial variable displacement piston pump | ||||||||||
| Impact flow | 105L/min | 100-120L/min | Rotation | Gear pump | ||||||||||
| Impact pressure | 130bar | 180bar | Filter fineness | 10µ | ||||||||||
| Maximum rotary pressure | 150bar | 210bar | Hydraulic oil tank | 400L | ||||||||||
| Impact Frequency | 62Hz | 62 Hz | Hydraulic cooler | Water cooler | ||||||||||
| Torque | 325Nm | 764Nm | Working voltage | 380V | ||||||||||
| Hole diameter | Φ32-76mm | Φ42-102mm | Frequency | 50Hz | ||||||||||
| Beam rotation | 360° | Starting method | Star-triangle | |||||||||||
| Feed extension | 1600mm | Cable reel | 1*CRC1016 | |||||||||||
| Model of drill boom | K 26F | Length of reel cabling | 100m | 80m | ||||||||||
| Form of drill boom | Self-leveling | Outer diameter of cable | Φ28mm | Φ32mm | ||||||||||
| Boom extension | 1200mm | Cable specifications | 3×35+3G6+2×1.5 | 3×50+3G6+2×1.5 | ||||||||||