KJ 212 Hydraulic Top Hammer Drilling Jumbo
KJ212-type full-hydraulic tunnel jumbo can be used for drilling vertical, inclined and horizontal blast hole, which is specially designed for low roadway. Through section of 2.5m*1.5m, it is applicable for tunneling operation of roadway with section of 3.5m*1.8m-5m*4.8m.
Solid and reliable universal arm is equipped with the best section covering shape, and the propulsion beam can turn over by 360°and level off automatically, so as to be convenient for quickly achieving drilling and positioning.
Meanwhile, the big arm can be also used for laterally opening cross drift and anchor-hold drilling operation.
The arrangement of drill carriage shall ensure the view of the manipulator in good condition;
The arrangement is in balance condition. The strong four-wheel-drive articulated base plate can ensure that the drill carriage is able to travel flexibly, quickly and safely in the narrow roadway;
High-frequency impact jack drill optimizes the transmission efficiency of impact wave, enhances the drilling rate, reduces consumption of drilling tools and enhances the serviceability rate of equipment by adopting stair piston;
Spacious operation space and a series of automatic functions are conducive for the driver concentrating to safely, quickly and accurately drill.
Each maintenance part has been protected well and shall also be easy to maintain at the same time.
Boundary dimension (including optical auxiliary power station)
| Boundary dimension and weight | Drilling system | |||
| Length | 11160mm | Rock drill | 1×HC50/R38 | 1×HC109/R38 |
| Width | 2000 mm | Impact power | 13kW | 18.8kW |
| Height | 1465/1985 mm | Surge pressure | 130bar | 135L/min |
| Weight | 11000 kg | The maximum rotary pressure | 150bar | 135bar |
| Running speed (Horizontal) | 10km/h | Frequency | 62Hz | 150bar |
| Maximum grade ability | 200 | Torque | 325Nm | 47 Hz |
| Safety protection | Hole diameter | Φ45-76 mm | 780Nm | |
| Noise level | ＜100dB(A) | Turnover of propulsion beam | 360° | 45-102mm |
| Adjustable security ceiling | Meet anti-rolling and anti- rock fall requirement | Compensative travel of propulsion beam | 1600 mm | |
| Wind and water circuit system | type | K 20 | ||
| Air compressor | 1×JN5 | form | Automatic level off | |
| Displacement | 0.5m3/min | Flexible drill boom | No | |
| Pressure | 8bar | Electric hydraulic power pack | ||
| Shank lubrication device | Pressure oil lubrication tank/ electromagnetic lubrication pump | Electric motor | 45KW | 55KW |
| Gas consumption for lubrication | 0.3 m3/min | Impact/ propulsion/drill boom | Axial variable displacement piston pump | |
| Oil consumption for lubrication | 180-250g/h | Rotation | Gear pump | |
| Water pump | 1×CR3 | Filter fineness | 10μ | |
| Power | 1.5kW | Hydraulic oil tank | 240L | |
| Pump output | 3m3/h | Hydraulic cooler | Water cooler | |
| Base plate | Operating voltage | 380V | ||
| Diesel engine | 60kW@2800rpm | Frequency | 50Hz | |
| 4BT3.9-C80 | Startup method | Star delta | ||
| Tail gas clean-up | Power gas catalyst | Cable Reel | 1×K440 | |
| Transmission system | Four-wheel-drive closed- type travelling system | Cable capacity of reel | 100m | 80m |
| Hunting angle | ±6°Swing of rear axle | External diameter of cable | Φ28 mm | Φ32 mm |
| Tire | 300-15 | Specification of the cable | 3×35 3G6 2×1.5 | 3×50 3G6 2×1.5 |
| Steering mechanism | ±35°Articulated steering | | | |
| Parking braking | Multiple disc brake | | | |
| Emergency braking | | | ||
| Fuel tank | 60L | | | |
