DRAGON

Concrete spraying system

DRAGON is a compact, versatile and high performance unit for underground shotcrete works. Practical and easy to use, Dragon is the ideal solution for small and medium section galleries and tunnels. Designed for heavy working conditions, highly resistant to operating stress.
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Spraying boom and nozzle system

- Great maneuverability of the telescopic boom with 4 section box beams in high yield point steel, with protection cover and guide bushing for smooth operations
- Front hydraulic stabilizers with shaft protection
- High pressure rubber hose diameter 65 mm for concrete, high quality air and chemical hose
- Automatic brush movement of the nozzle, rotation 360°, inclination 240°
- Easy cleaning nozzle group
 

Electrics

- Every electric component is marked and easy to identify
- Working lights: 2x500W placed on the spraying boom and 2 extra-lights on the concrete pump and working areas
- 50 m electric supply cables with manual reel
 

 

 

 

Admixture dosing pump

- Increased capacity additive tank of 600 literseasy to refill and change (1000 l. optional)
- Hydraulically operated pulsation-free worm pump, stainless steel rotor to avoid corrosion plus dry running protection
- Ideal for all types of accelerator, alkali-free included
- Electronic output meter. Additive dosing ratio is synchronized with the concrete flow

Truck

- Front load-bearing and steering with planetary reduction gears on the wheel hubs
- Rear load-bearing oscillating (+- 5”) and steering with planetary reduction gears on the wheel hubs and flanged gearbox
- Front and rear tyres: 12.0/75 - 18” P.R. 12 TR3
- Heavy duty chassis designed to stand the toughest working conditions in mines and tunneling works

 

Technical data

 

         DRAGON 50 HZ              

 DRAGON 60 HZ    

Diesel engine (traction) Yanmar - liquid cooled - 33 kW Deutz - air/oil cooled - 54 kW
Eletric motor (pumping) 30 kW 30 kW
Compressor eletric motor 37 kW 44 kW
Max theoretical output [*] 15 m3/h 15 m3/h
Compressor air output 6.500 l/min 6.500 l/min
Max pressure on material  80 bar 80 bar
Max strokes 30 30
Pumping cylinders Ø 120 mm (with run 700 mm) Ø 120 mm (with run 700 mm)
Additive max output [*] 16 l/min 16 l/min
Additive tank 600 l (1.000 l upon request) 600 l (1.000 l upon request)
Water tank  200 l 200 l
Telescopic arm - maximum spraying reach Vertical 8,9 m / horizontal 7,1 m Vertical 8,9 m / horizontal 7,1 m
Telescopic arm - minimum spraying reach Vertical 2,5 m / horizontal 2,4 m Vertical 2,5 m / horizontal 2,4 m
Transmission hydrostatic with mechanical gearbox hydrostatic with mechanical gearbox
Steering Steering assisted, dry steering on 4 steering wheels
2 steering wheels - 4 steering wheels, crab steering
Steering assisted, dry steering on 4 steering wheels
2 steering wheels - 4 steering wheels, crab steering
Traction 4 wheel drive - 4 wheel steering  4 wheel drive - 4 wheel steering 
Dimensions (L x W x H)  5.321 x 2.263 x 2.620 cm  5.321 x 2.263 x 2.620 cm 
Weight 5.300 kg 5.300 kg
Weight with compressor 6.600 kg 6.600 kg

[*] The data indicated are theoretical and depend on the quality and consistency of the materials to be used wear and tear of the pump and the diameter of the hoses. The performance in distance and height can not be reached simultaneously.

 

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