KJ311 Underground Mining Drill Rigs and Tunneling Jumbo,Crawler DTH Drilling rigs

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KJ311(Plateau) Underground Mining Drill Rigs and Tunneling Jumbo

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KJ311 Underground Mining Drill Rigs and Tunneling Jumbo

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KJ311(Plateau) Underground Mining Drill Rigs and Tunneling Jumbo is designed for high altitude construction,it is suitable for tunneling operation at the section of 12-35m² in hard-rock mine.
Its firm and reliable universal big boom 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 boom 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. 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 KJ311(Plateau) Underground Mining Drill Rigs and Tunneling Jumbo

Dimensions and Weight
Length	11300mm
Width	1750mm
Height	2000/3000 mm
Weight	12000 kg
Travelling speed, level	2.5 km/h
Climbing capacity	14°
Safe protection
Noise level	<100 dB(A)
Lifting safety ceiling	Meet the requirements of FOPS and ROPS.
Drilling system
Rock drilling	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 rotation pressure	150bar	150bar	210bar
Frequency	62 Hz	47 Hz	62Hz
Torque	325Nm	780Nm	764Nm
Aperture	32-89mm	45-102mm	Φ42-102mm
Beam ratation	360°
Feed extension	1600mm
Model of boom	K26F
Form of boom	Automatic leveling
Extension of drill boom	1200mm
Electric Hydraulic pump station
Electric motor(Plateau type)	45kW		75kw
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×F440
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
Air and water system
Air Compressor	1×JN5
Capacity	0.5m³/min
Pressure	6-8bar
Device of shank lubrication	Electrical pulse lubrication pump
Air consumption for lubrication	0.3m³/min
Oil consumption for lubrication	180-250g/h
Water Pump	1×CR3	1×CR5
Power	1.5kW	5.5kw
Pump Capacity	3m³/h	6m³/h
Chassis
Diesel engine	Cummins QSB3.9-C125 93kw/2600rpm
Exhaust purification	Exhaust catalyst
Drive system	Track travelling driven by double-speed hydraulic motor
Swinging angle	The rear axle swings for ±10°
Tire	11.00-20
Steering mechanism	±40° articulated steering
Travel brake	Two-circuit hydraulic brake
Parking brake	Wet multidisc brake
Fuel tank	60L