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.
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 | < 100dB(A) | ||||||
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 |
- Derivative models:
Height Enhanced model: Designed for large tunnels, with a maximum horizontal height of 7.4 meters and a width of up to 7.6 meters. Double-layer guide rail type: Designed to accommodate rock bolting, capable of drilling 2.2-meter rock bolt holes in 4-meter high tunnels. Plateau model: Specifically designed for construction in high-altitude areas. - Hydraulic tunneling drilling rig is equipped with the French Montabert imported medium and low pressure high-frequency hydraulic rock drill, using a stepped piston for enhanced reliability and lower maintenance costs.
- The original power control valve block from Montabert, France is equipped, enabling it to feature automatic impact pressure adjustment, and anti-jamming function. This ensures smooth and accurate hole drilling during the operation.
- The hydraulic tunneling drilling rig utilizes a newly designed Cartesian coordinate linear motion drilling arm to maintain automatic parallelism with the initial position to achieve optimal cross-sectional coverage shape and eliminate blind spots within the section range. The drilling arm can also be used for lateral stone breaking and rock bolt drilling operations.
- The drilling equipment adopts auto-stop device and bottom hole debris clearing function, automatically stopping pushing and impacting after finishing the drilling process. The handle control can be used to blow out residue and water at the bottom of the hole, eliminating the need for manual cleaning and reducing operation cycle time.
- Kaishan brand energy-saving integrated direct-connected screw air compressor is used, allowing for smooth operation, easy maintenance, significant energy savings, and reduced pollution.
- Designed with a Cummins diesel engine and a four-wheel hydraulic drive walking system, this enables stepless speed change, strong climbing ability, and high travel speed. The drilling equipment is also equipped with an exhaust purification device, greatly improving underground working conditions.
- Walking brakes use a dual-circuit multi-plate wet brake system, complemented by a multi-disc parking brake system, providing dual safety measures for the drilling rig. Additionally, multiple emergency switches greatly enhance underground operational safety.
- The hydraulic tunneling drilling rig features compact structure and flexible steering. Its mining articulated chassis is matched with wet wheel axles, with an articulated steering angle of ±40° and a rear axle swing angle of ±10°. This enables the drilling rig to easily navigate through narrow 2-meter wide tunnels and perform right-angle turns in 3-meter wide tunnels.
- Spacious working space ensures good driver visibility, and the drilling rig is equipped with a liftable safety roof and a series of automatic functions.
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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