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Underground Jumbo

Underground Jumbo
  • The Main Features:

    Applicable for blast hole drilling of underground mining, tunneling and bolting operation.

    Function Configuration:

    Equipped with environment friendly diesel engine to drive tramming and positioning, electrical motor to drive drilling operation, the dual power configuration allows the rig for fast maneuverability and zero emission with very low noise level of drilling operation. The rig is also equipped with high efficiency hydraulic drifter and heavy duty floating and steady combo boom drilling system, with high accurate automatic horizontal positioning and 360 rotating function, which allows the rig to finish 35 m2 face drilling coverage in one operation and also can be used for bolting and many other applications.


    With high pressure and closed cycle hydraulic system to drive four wheels, for two speed transmission while moving forward and backward. With engine non stop when overloaded and climbing slopes, the rig will automatically adjust to lower speed with higher torque output. The two loop circuitry pedal braking system plus emergency braking device can ensure tramming safety. With only width of 1.65 m of ultra-narrow articulated heavy duty chassis design, the minimum turning radius is 2.8m with 14 degree climbility and tramming speed up to 12 km/h and the rig aims to drill blast holes in underground mines and tunneling excavation as well as bolting operation with professional narrow design in mind.

    Control System:

    With automatic hole collaring and percussion shutdown function after the drilling procedure completed plus 3 seconds delay to flush the hole bottom, the rig returns automatically to start mode. With AUTO shutdown protection function of the drifter and the rock drill tools, the rig will lubricate the drifter when rock drilling idle and when water flushing on. Advanced combo automatic anti-jamming system can adjust the rotation, feed and percussion pressure automatically according to the rock condition to ensure rock drilling operation always in optimum mode.

    Intelligent Technology:

    With CAN technology, modular layout of all electric system, and simplified circuitry increase reliability. The display panel in the canopy shows all drilling parameters and running state of the rig with automatic alarms and warnings, and data storage, to allow one man operation easy and trouble shootings simplified.

    Product Features

    1.Feed: Heavy duty aluminum alloy feed beam with high anti-bending and torsion-resistant features and high corrosion proof assures long beam service life. The beam surface also is wrapped with stainless steel sheet and PTFE anti-wear lining applied between moving parts to further increase service life of the feed system.
    2.Rock Drill: ZY104M drifter with dual-damping system ensures best rock drilling tools service life. Pressurized oil film protects and lubricates all moving parts surface, decreasing interior wear of the drifter.
    3.Safety Canopy: FOPS design for falling objects protection with lifting feature.
    4.Large-capacity Cable Reel: Larger-capacity cable reel for 70 m travel without cable disassemble.
    5.Positioning legs: Four heavy duty telescopic hydraulic legs for precise positioning and stability during drilling operation.
    6.Console: Highly integrated System and one place layout design for easier, simpler and more convenient operation.
    7. Braking system: Designed and developed specially for underground work environment - the dual braking system, besides front and rear axle wheel wet brakes, with front axle spindle wet brakes and rear axle closed hydraulic parking brakes and emergency shutdown brake added.

  • J21 Technical Specifications
    Hole range 41-89 mm Rod size (R32, R38,T38) 3090 mm/3700 mm/4310 mm
    Drilling depth 2830 mm/3440 mm/4050 mm Maximum working area 35 m2
    model ZY104M Hydraulic System Pressure 230 bar
    Percussion Power 20 kw Rotation Speed 0-388 rpm
    Maximum Torque 752 N.m Weight 170 kg
    Percussion Frequency 60 Hz

    Pressure 8 bar Capacity F.A.D 0.3 m3/min
    Electric Motor
    Model GN13081501 Frequency 50 Hz
    Powe 55 kw Votage 380 V
    RPM 1475 r/min

    Feed Mechanism
    Total Length 4890 mm/5500 mm/6110 mm Compensated Feeding length 1600 mm
    Feeding length 2830 mm/3440 mm/4050 mm Maximum Lifting Force 15 kn/19 kn
    Parallel holding Complete Feed Swing Angle ±40°
    Boom Extension 1200 mm Feed Pitch Angle +25°/-48°
    Boom Swing Angle ±35° Feed Angle +3°/-90°
    Boom Lifting Angle +43°/-20° Feed roll-over 360°(Spiral)
    Articulated Steering Angle ±41° Approach and Departure Angles 15°
    Hydraulic Support Legs 4 Fuel Tank Capacity 63 L
    Model 4BTA3.9-C80-Ⅱ(Cummins) RPM 2200 r/min
    Powe 60 kw/(at 2200rpm时) Torque 380 N.m/(at 1500rpm时)
    Tramming Speed 12/4.5 km/h Rear Axle Swing Angle ±10°
    Maximum Traction Force 32 kn Ground Clearance 260 mm
    Climbing Angle 14°

    Electric System
    Start Type Star / delta unloading start Working Lights 2x40 W,24 V
    Voltage 380 V Tramming Lights 8x70 W,24 V
    Battery 2x12 V,105 Ah Cable Reel, Diameter 1100 mm
    Water Flushing System
    Flow 66 L/min Minimum Water Inlet Pressure 2 bar
    Pressure 12 bar

    Weight and Dimensions
    Weight ≤121700 kg Tramming Turning Radius Inner R 2800 mm,Outer R 4900 mm
    Dimensions ( L x W x H) 10920 mmx1650 mmx2100 mm/2800 mm Working Coverage Area : Width x Height 6600 mmx5670 mm(5600 mmx5390 mm)