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KJ211 Underground Mining Drill Rigs and Tunneling Jumbo

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KJ211 Underground Mining Drill Rigs and Tunneling Jumbo is designed for mining, preparation and tunneling. As a hydraulic rock-drilling jumbo with independent operation, it can drill vertical, inclined and horizontal blast holes; applicable to the hard rock tunneling with a section of 12-35m2.

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 KJ211 Underground Mining Drill Rigs and Tunneling Jumbo

Dimensions versus Weight
Length	10000mm
Width	1600mm
Height	1850/2650mm
Weight	11000 kg
Travelling speed, level	10 km/h
Climbing capacity	25% (20°)
Security
Noise level	<110 dB(A)
Lifting safety ceiling	It conforms to the requirement to prevent rolling and falling rock.
Drilling system
Rock drilling	1×HC50/R38	1×HC109/R38
Impact power	13kW	18.8kW
Impact flow	105L/min	135L/min
Impact pressure	130bar	135bar
Maximum rotation pressure	150bar	150bar
Frequency	62 Hz	47 Hz
Torque	325Nm	780Nm
Aperture	32-76mm	45-102mm
Rolling of the propelling beam	360°
Compensative travel of propelling beam	1600mm
Drill rod	R38-H35-R32-3700
Boom
Model	K26F
Form	Automatic leveling
Extension of drill boom	1200mm
Electric Hydraulic pump station
Electric motor	45kW/55kW Three phase
Impact- propelling-Boom	Variable axial piston pump
Turn around	Gear pumps
Filter precision	10μ
Hydraulic oil tank	240L
Hydraulic cooler	Water cooler
Working pressure	380V
Frequency	50Hz
Starting method	Star - triangle
Cable reel	1×K440
Cable capacity of the reel	100m/80m
Outer diameter of cable	Φ28mm/Φ32mm
Specifications of cable	3×35+3G6+2×1.5
	3×50+3G6+2×1.5
Wind and water route system
Air Compressor	1×JN5
Capacity	0.5m3/min
Pressure	5-8bar
Lubricating device of drill rod tail	Forced feed lubricating can
Gas consumption for lubrication	0.3m3/min
Oil consumption for lubrication	180-250g/h
Pump	1×CR3
Power	1.5kW
Pump Capacity	3m3/h
Chassis
Diesel	BF4L2011 53kW，2800rpm
Tail gas clean-up	Tail gas catalyst
Transmission	Closed-wheel drive traveling system
Swinging angle	The rear axle swings for ±6°
Tire	300-15
Steering mechanism	±35° articulated steering
Travel brake	Double loop hydraulic brake
Parking brake	Multi-disk wet brake for reducer
Fuel tank	60L

Overall Dimension (including an optional auxiliary power station)

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