KJ212 All-hydraulic Tunneling Jumbo
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KJ212 All-hydraulic Tunneling Jumbo can drill vertical, inclined and horizontal blast holes, designed exclusively for low roadways, with a passage section of 2.5m*1.5m, applicable to the roadway tunneling operations with a section of 3.5m*1.8m-5m*4.8m.

Its firm and reliable universal big arm has the best shape of section coverage, boosting the 360° overturn and automatic leveling of the beam for rapid and convenient borehole positioning. The big arm can also be used for lateral cross hole opening and anchor rod boring operations.

The arrangement of the jumbo ensures the good view of the operator.

Evenly-arranged and powerful 4-wheel drive hinge chassis ensures flexible, quick and safe driving in a narrow roadway.

The high-frequency percussion rock driller uses the cascaded piston to optimize the efficiency of shock wave transmission, raise the drilling speed, reduce clamping bit consumption and enhance the soundness of device.

The big space of operation and a series of automatic functions can help the driver to concentrate their attention to safe, rapid and accurate tunneling.

All its repair and maintenance parts have been protected well, and its repair and maintenance are easy.

Technical Parameters of KJ212 All-hydraulic Tunneling Jumbo

Dimensions versus Weight

Drilling system

Length

11160mm

Rock drilling

1×HC50/R38

1×HC109/R38

Width

2000mm

Impact power

13kW

18.8kW

Height

1465/1985mm

Impact pressure

130bar

135L/min

Weight

11000 kg

Maximum rotation pressure

150bar

135bar

Travelling speed, level

10km/h

Frequency

62Hz

150bar

Climbing capacity

20%

Torque

325Nm

47 Hz

Security

Aperture

Φ45-76mm

780Nm

Noise level

<100dB(A)

Rolling of the propelling beam

360°

45-102mm

Lifting safety ceiling

It conforms to the requirement to prevent rolling and falling rock.

Compensative travel of propelling beam

1600mm

Wind and water route system

BoomModel

K 20

Air Compressor

1×JN5

BoomForm

Automatic leveling

Displacement

0.5m3/min

Extension of drill boom

no

Pressure

8bar

Electric Hydraulic pump station

Lubricating device of drill rod tail

Forced feed lubricating can

Electric motor

45kW

55kW

Gas consumption for lubrication

0.3 m3/min

Impact- propelling- drill boom

Variable axial piston pump

Oil consumption for lubrication

180-250g/h

Turn around

Gear pumps

Pump

1×CR3

Filter precision

10μ

Power

1.5kW

Hydraulic oil tank

240L

Pump displacement

3m3/h

Hydraulic cooler

Water cooler

Chassis

Working pressure

380V

Diesel

60kW@2800rpm

Frequency

50Hz

4BT3.9-C80

Starting method

Star - triangle

Tail gas clean-up

Tail gas catalyst

Cable reel

1×K440

Transmission

Closed-wheel drive traveling system

Cable capacity of the reel

100m

80m

Swinging angle

The rear axle swings for ±6°

Outer diameter of cable

Φ28mm

Φ32mm

Tire

300-15

Specifications of cable

3×35+3G6+2×1.5

3×50+3G6+2×1.5

Steering mechanism

±35° articulated steering

Parking brake

Multi-plate brake

Emergency braking

Fuel tank

60L

Overall Dimension (including an optional auxiliary power station)

KJ212 All-hydraulic Tunneling Jumbo

Change Sketch

KJ212 All-hydraulic Tunneling Jumbo

Section Sketch

KJ212 All-hydraulic Tunneling Jumbo
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