Advantages
1. The KJ311 is a hydraulic top hammer drilling rig designed for a 12-35 m2 cross-section for use in underground mining projects.
2. Robust universal drilling boom creates ideal face drilling coverage. Automatic parallelism and 360° roll-over enable easy, fast and accurate positioning for face drilling, sideways drilling and bolt hole drilling.
3. The configuration of components allows for the operator to have a clear view when drilling and traveling. A powerful and well-balanced 4-wheel drive chassis lets the tunneling drilling rig move through limited space and tough terrain in the mines. A dual-circuit service brake and enclosed multi-disc parking/emergency brake ensure safety in tramming and on sloped terrain.
4. Field-proven high frequency hydraulic drifter delivers high performance. A trapezoidal percussion piston optimizes shock wave transfer efficiency, so the drill can penetrate deeper while decreasing cost of replacement parts.
5. The operator cab is safe and comfortable. Many automatic features simplify drilling control so miners can focus on fast and accurate drilling.
6. All service points of the hydraulic drifting jumbo are easily accessible, simplifying routine maintenance.
KJ311 Main Features and Specifications
| Dimensions and Weight | |||
| Length | 11300mm | ||
| Width | 1750mm | ||
| Height | 2000/3000mm | ||
| Weight | about 12000kg | ||
| Walking Speed, Horizontal | 10 km/h | ||
| Grade Ability | 0.25 | ||
| Protection | |||
| Noise Level | <100 dB(A) | ||
| Adjustable Safety Canopy | POPS +ROPS | ||
| Drilling System | |||
| Drifter | 1×HC50/R38 | 1×HC109/R38 | |
| Weight | 112KG | 151KG | |
| Percussion Power | 13kW | 18.8kW | |
| Percussion Flow | 105L/min | 135L/min | |
| Percussion Power | 130bar | 135bar | |
| Rotation Pressure | 150bar | 150bar | |
| Frequency | 62 Hz | 47 Hz | |
| Rotation Torque | 325Nm | 780Nm | |
| Hole Dia. | 32-89mm | 45-102mm | |
| Rod Size | R38-H35-R32 | ||
| Feed Roll-Over | 360° | ||
| Pushing Length | 3450mm | ||
| Feed Stroke | 1600mm | ||
| Elevation Angle | 90° | ||
| Blow Angle | 90° | ||
| Swing Angle | Left 45° Right 45° | ||
| Boom | |||
| Model | K26F | ||
| YPE | Automatic parallelism | ||
| Boom Extension | 1200mm | ||
| Elevation Angle | 45° | ||
| Blow Angle | 16° | ||
| Swing Angle | Left 45°, Right 45° | ||
| Electric Hydraulic Power Station | |||
| Motor Power | 45kW/55kW AC three phase | ||
| Percussion + feed + boom | Variable piston pump | ||
| Rotation | Gear pump | ||
| Filtration | 10μ | ||
| Hydraulic Tank | 240L | ||
| Hydraulic Oil Cooler | Water cooler | ||
| Voltage | 380V | ||
| Frequency | 50Hz | ||
| Start | Δ-Y | ||
| Cable Reel | 1×K440 | ||
| Cable Length | 100m /80m | ||
| Cable Size | Φ28mm/Φ32mm | ||
| Cable Type | 3×35+3G6+2×1.5 | ||
| 3×50+3G6+2×1.5 | |||
| Water and Air System | |||
| Compressor | 1×JN5 | ||
| Output | 0.5m3 /min | ||
| Pressure | 5-7 bar | ||
| Shank lubrication | Oil mist | ||
| Shank Lubrication Air Consumption | 0.3m3 /min | ||
| Shank Lubrication Oil Consumption | 180-250g/h | ||
| Flushing Pump | 1×CR3 | ||
| Power | 1.5kW | ||
| Output | 3m3/h | ||
| Under Carriage | |||
| Diesel Engine | DEUTZ BF4L2011 53kW, 2800rpm | ||
| Tail Gas Clean-up | Exhaust catalysts | ||
| Drive System | 4-wheel drive | ||
| Oscillation | Rear axle ±10° | ||
| Tire | 11.00-20 | ||
| Steering | ±40° articulation | ||
| Service brake | Duo-circuit disc brakes | ||
| Parking/Emergency | Multi-disc on trans | ||
| Fuel Tank | 60L | ||
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