Hydraulic Tunneling Drilling Rig, KJ311

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Secondary breaking drill rig Dimensions (L×W×H): 11300×1750×2000/3000mm Weight: Approx.12000kg Maximum gradeability: 25%(14°) Range of cross section: 12-35m²

KJ311 hydraulic tunneling drilling rig is a secondary breaking drill rig engineered for hard-rock mining and tunneling operations, with cross sections of 12-35m².

Video Show Structure Diagram Technical Specifications

Dimensions and weight
Length			11300mm
Width			1750mm
Height			2000/3000mm
Weight			Approx.12000kg
Tramming speed on flat ground			10km/h
Maximum gradeability			25%(14°)
Safety protection
Noise level
Lifting safety roof			Meet the requirements of FOPS and ROPS
Air and water system
Air compressor	1×JN4		Oil consumption of lubrication		180-250g/h
Capacity of air compressor	0.5m³/min
Pressure	6-8bar		Water pump		1×CR3		1×CR5
Shank lubrication device	Electronic pulse lubrication pump		Power		1.5kW		5.5kW
Air consumption of lubrication	0.3m³/min		Capacity of water pump		3m³/h		6m³/h
Chassis
Diesel engine	Cummins QSB3.9-C80-31 60kW/2200rpm		Tires		11.00-20
Exhaust purification	Exhaust catalyzer		Steering mechanism		Articulated steering angle: ±40°
Drive system	Closed hydraulic system for four-wheel driving		Travelling braking		Two-circuit hydraulic brake
Swing angle	Swing of rear axle: ±10°		Parking braking		Wet multi-disc brake of reducer
			Fuel tank		60L
Drilling system
Rock drill (drifter)		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			180-200bar
Maximum rotary pressure		150bar	150bar			210bar
Impact frequency		62Hz	47Hz			62Hz
Torque		325Nm	780Nm			764Nm
Hole diameter		Ø32-76mm	Ø42-102mm			Ø42-102mm
Beam rotation		360°
Feed extension		1600mm
Model of drill boom		K26F
Form of drill boom		Automatic parallelism
Boom extension		1200mm
Electric hydraulic power unit
Motor		45kW	55kW			75kW
Impact/Feed/Positioning		Variable displacement axial piston pump
Rotation		Gear pump
Filter fineness		10µ
Hydraulic oil tank		240L
Hydraulic cooler		Water cooler
Working voltage		380V
Frequency		50Hz
Starting method		Star/delta
Cable reel		1×F440
Length of reel cabling		100m		80m
Cable specifications		3×35 3G6		3×50 3G6

Main Part Brand

Item	Name	Brand	Country
1	Rock rill	Montabert	France
2	Rock drill control system	Montabert	France
3	Screw oil cylinder	HELAC	USA
4	Plunger pump	Danfoss	USA
5	Motor	Danfoss	USA
6	Gear pump	Danfoss	USA
7	Steering gear	Danfoss	USA
8	Hydraulic valve	MICO	USA
9	Dual brake valve	MICO	USA
10	Valve group	hydro contro	Italy
11	Diesel engine	DEUTZ	Germany
12	Cable reel	Cavotec	Italy
13	Cable	Nexans	France
14	Water pump	Grundfos	Germany
15	Drill rod	Kaishan	China
16	Drill bit	Kaishan	China
17	Jointer	Eaton	USA
18	Hose	Eaton	USA
19	Electrical elements	Schneider	Germany
20	Screw air compressor	Kaitain	China
21	Oil cylinder	Waco	Germany
22	Energy accumulator	Liming	China
23	Cooler	Changzhou	China
	Hydraulic system cooler	HYDAC	Germany
24	Main motor	Wolong	China
25	Tyre	Chaoyang	China

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