Hydraulic Tunneling Drilling Rig, KJ311-4 Manufacturer

Hydraulic Tunneling Drilling Rig, KJ311-4

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Diesel engine drilling rig

Dimensions (L×W×H): 8200×1780×2000/3000mm
Weight: Approx.12000kg
Maximum gradeability: 25%(14°)

KJ311-4 hydraulic tunneling drilling rig is built for underground mining and tunneling operations requiring multi-station drilling with less time spent. The drilling rig is powered by diesel engine to provide reliable performance, and it has air compressor and water tank, eliminating the need for external water and air pipeline as well as power source. The hydraulic tunneling drilling rig is primarily suited for large block caving mining projects that relies on natural forces to break the rock, it can achieve fast rock drilling and easy transport.

Video Show

Structure Diagram

Technical Specifications

Dimensions and weight
Length			8200mm
Width			1780mm
Height			2000/3000mm
Weight			Approx.12000kg
Tramming speed on flat ground			10km/h
Maximum gradeability			25%(14°)
Safety protection
Noise level			< 100dB(A)
Lifting safety roof			Meet the requirements of FOPS and ROPS
Air and water system
Air compressor	CP9952		Oil consumption of lubrication		180-250g/h
Capacity of air compressor	0.3m³/min
Pressure	3-5bar		Capacity of water pump		3m³/h
Shank lubrication device	Electronic pulse lubrication pump
Chassis
Diesel engine	Cummins QSB3.9-C125 /93kW/2200rpm		Tires		11.00-20
Exhaust purification	Exhaust catalyzer		Steering mechanism		Articulated steering angle: ±40°
Drive system	Hydraulic motor-Gearbox-Wet axle (four-wheel drive)		Travelling braking		Two-circuit hydraulic brake
Swing angle	Swing of rear axle: ±10°		Parking braking		Wet multidisc brake of reducer
			Fuel tank		60L
Drilling system
Rock drill (drifter)		1×HC50/R38
Impact power		13kW
Impact flow		105L/min
Impact pressure		130bar
Maximum rotary pressure		150bar
Impact frequency		62Hz
Torque		325Nm
Hole diameter		Ø32-76mm
Beam rotation		360°
Feed extension		850mm
Drilling depth		1000mm		1500mm
Drill rod		R38-H35-R32-1350		R38-H35-R32-1850
Model of drill boom		K25
Form of drill boom		Telescopic
Boom extension		1200mm
Electric hydraulic power unit
Impact/Feed/Positioning		Variable displacement axial piston pump
Rotation		Gear pump
Filter fineness		10µ
Hydraulic oil tank		240L
Hydraulic cooler		Air cooler

Features

KJ314 hydraulic tunneling drilling rig is equipped with the French Montabert imported medium and low pressure high-frequency hydraulic rock drill, and a stepped piston for enhanced reliability and lower maintenance costs.
The drilling rig is equipped with the original power control valve block from Montabert, France, enabling it to feature automatic impact pressure adjustment, and anti-jamming function. This ensures smooth and accurate hole drilling during the operation.
It utilizes a newly designed Cartesian coordinate linear motion drilling arm to maintain automatic parallelism with the initial position, facilitating quick and convenient positioning for drilling.
The drilling equipment adopts auto-stop device and bottom hole debris clearing function, and it will automatically stops pushing and impacting after finishing the drilling process, reducing operation cycle time.
It’s equipped with a Cummins diesel engine and a four-wheel hydraulic drive walking system, enabling stepless speed change, strong climbing ability, and high travel speed.
The walking brake adopts a multi-disc wet brake system, supplemented by a spring (hydraulic release) parking brake system, providing double guarantee for the braking of the drilling rig.
The mining articulated chassis is equipped with wheel-side motors, with an articulated steering angle of ±35° and a rear axle swing angle of ±6°.
Spacious working space ensures good driver visibility, and the drilling rig is equipped with a liftable safety roof and a series of automatic functions.