Hydraulic Tunneling Drilling Rig, KJ212

Hydraulic Tunneling Drilling Rig, KJ212
Hydraulic Tunneling Drilling Rig, KJ212
Hydraulic Tunneling Drilling Rig, KJ212
Hydraulic Tunneling Drilling Rig, KJ212
Hydraulic Tunneling Drilling Rig, KJ212
Hydraulic Tunneling Drilling Rig, KJ212
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Low profile drill rig

  • Dimensions (L×W×H): 11160×2000×1465/1985mm
  • Weight: 11000kg/Appr.11000kg
  • Maximum gradeability: 20%(11°)
  • Range of cross section: 2.5m-1.5m

KJ212 hydraulic tunneling drilling rig is a low profile drill rig able to drill vertical, inclined or horizontal holes. This tunneling jumbo is specially engineered for low-height tunnels with cross sections ranging from 3.5m×1.8m to 5m×4.8m, it can pass through a cross section of up to 2.5m×1.5m.

Video Show
Structure Diagram
Technical Specifications
Dimensions and weight
Length 11160mm
Width 2000mm
Height 1465/1985mm
Weight Approx.11000kg
Tramming speed on flat ground 10km/h
Maximum gradeability 20%(11°)
Safety protection
Noise level < 100dB(A)
Lifting safety roof Meet the requirements of FOPS and ROPS
Air and water system
Air compressor 1×JN4 Oil consumption of lubrication 180-250g/h
Capacity of air compressor 0.5m³/min
Pressure 6-8bar Water pump 1×CR3 1×CR5
Shank lubrication device Electronic pulse lubrication pump Power 1.5kW 5.5kW
Air consumption of lubrication 0.3m³/min Capacity of water pump 3m³/h 6m³/h
Chassis
Diesel engine Cummins QSB3.9-C80-31 60kW, 2200rpm Steering mechanism Articulated steering angle: ±35°
Exhaust purification Exhaust catalyzer Parking braking Multi-disc brake
Drive system Closed hydraulic system for four-wheel driving Emergency braking
Swing angle Swing of rear axle: ±6° Fuel tank 30L
Tires 300-15
Drilling system
Rock drill (drifter) 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 180bar
Maximum rotary pressure 150bar 150bar 210bar
Impact frequency 62Hz 47Hz 62Hz
Torque 325Nm 780Nm 764Nm
Hole diameter Ø32-76mm Ø42-102mm Ø42-102mm
Beam rotation 360°
Feed extension 1600mm
Model of drill boom K20
Form of drill boom Automatic parallelism
Boom extension 1200mm
Electric hydraulic power unit
Motor 45kW 55kW 75kW
Impact/Feed/Positioning Variable displacement axial piston pump
Rotation Gear pump
Filter fineness 10µ
Hydraulic oil tank 240L
Hydraulic cooler Water cooler
Working voltage 380V
Frequency 50Hz
Starting method Star/delta
Cable reel 1×F440
Length of reel cabling 100m 80m
Cable specifications 3×35 3G6 2×1.5 3×50 3G6 2×1.5
Features
  • The hydraulic tunneling drilling rig is configured with medium/low pressure hydraulic drifters from Montabert. Hydraulic hoses and seals do not operate in high pressure conditions since the hydraulic drifter works under low oil pressure, thus resulting in prolonged service life, high reliability and less maintenance cost when compared to high pressure hydraulic drifter;
  • The rock drill (drifter) uses stepped piston, which improves the efficiency of impact energy transfer from drill to rock, increases drilling speed, lowers the consumption of drilling tools while keeping the drill rig in good condition;
  • Independently designed drilling rig boom uses Cartesian coordinate action principle to enable quick and simple drilling positioning since it can achieve that the feed beam is automatically parallel to the origin position; The robust drill boom offers optimum shaped coverage, with no blind spot for drilling holes, the boom can also execute cross-cut drilling and bolt hole drilling operations;
  • Low-emission Cummins diesel engine paired with hydraulic four-wheel-drive transmission system is included in the hydraulic tunneling drilling rig, achieving stepless speed adjustment, high gradeability and fast walking speed; The exhaust purification device is equipped to greatly improve the underground working environment;
  • Wet multi-disc service brake and spring-applied hydraulically released parking brake provide safe braking and high stability; In addition, emergency stop buttons at multiple points significantly enhance the safety during underground mining and tunneling operations;
  • The compact structure of the tunneling jumbo makes steering more flexible, the powerful articulated chassis allows for steering angle of ±35° and rear axle swing angle of ±6°, enabling the drilling rig to easily pass through tunnels with a height down to 1.8m, and safely achieve right angle turns in a 3.5m wide tunnel;
  • The spacious operating environment, lifting protective roof and considerably designed automatic functions of the low profile drill rig allow the operator to focus on drilling safely, quickly and accurately;
  • Optimal layout of the drilling rig enables operator has a good visibility, and all parts at service points are securely protected, and accessible for easy maintenance;
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