Astra ADT30D inglese

ARTICULATED DUMPER ASTRA ADT 30D

ADT 30D

[636] aprile_2010

WALKAROUND ACCHINE M Articulated Dumper

Payload 28,1 ton Body Capacity heaped 16,9 m3 Max power 260 kW

BY

CLAUDIO MARINI

ASTRA ADT 30D

Powerful, strong and easy to drive

PLUS OF COSTRUZIONI

n POWERFUL CURSOR ENGINE n POWERFUL ENGINE (260 KW) 24 VALVES (OVERHEAD CAMSHAFTS)

WITH VARIABLE GEOMETRY TURBOCHARGER, HIGH PRESSURE PUMP INJECTORS (HIGH EFFICIENCY AND TORQUE AT LOW RPM)

BRAKE (264 KW) WITH NO NEED FOR THE HYDRAULIC RETARDER (SIMPLER DESIGN).

RETARDER AVAILABLE

n POWERFUL ELECTRIC SYSTEM

n NEW DASHBOARD WITH

INTEGRATED REAR VIEW CAMERA AND POWERFUL DATA PROCESSOR (EASY TO USE AND TO MAINTAIN)

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n LARGER VEHICLE TRACK

(STABILITY).GOOD APPROACH ANGLE (27°)

n SIDE TILTING CAB WITH

SIDE OPENING FENDERS, ELECTRIC ENGINE HOOD TILTING SYSTEM

n ROBUST CAST HITCH:

BIG DIAMETER (58 CM) DOUBLE ROW BALL BEARING (RELIABILITY)

n NEW FRONT AXLE WITH

“DROP BOX” AND PROPSHAFT (RELIABILITY)

n REAR SUSPENSION:

BOGIE TYPE AND DOUBLE WISH BONE (STABILITY ON

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UNEVEN GROUND, HIGHER OSCILLATION)

n SOUNDPROOF CAB,

EASY TO ACCESS, WITH EXCELLENT VISIBILITY AND THERMOINSULATED PLASTIC ROOF

n ON ROAD HOMOLOGATION

AT 40 KM/H WITH UNLOADED VEHICLE (ITALY ONLY)

n Variable geometry turbo (higher torque at low rpm) Pneumo-mechanical actuator to increase the speed of the turbo at low rpm

ASTRA ADT 30D

A POWERFUL CURSOR OF 260 KW...

At low rpm, the turbo runs slowly due to the low flow of exhaust gases.

In order to increase the speed and therefore the engine power, a computer driven pneumo-mechanical device reduces the intake thus increasing the gas speed (Venturi effect) and the turbo rpm.

Higher torque at low engine rpm costruzioni April 2010

WALKAROUNDMACHINE [by n A powerful engine brake (264 kW) with no impact on the cooling system The power absorbed by the hydraulic retarder overheats the oil, whereas the exhaust brake overheats the engine.

On the other hand, the Iveco Cursor engine brake exploits the sudden opening of the exhaust valve at the end of the compression phase releasing the overheated air on the outside without creating obstructions.

The compression phase brakes the engine by itself, whereas during the expansion phase, the cylinder must be “dragged” by the engine to the bottom dead center, creating an additional braking action

n 24 valves to increase the torque at low rpm and improve the combustion efficiency

n Overhead camshafts to simplify the valve gap registration

... INNOVATION AND EFFICIENCY n Pump injectors in a single steel structure, to increase the injecting pressure (efficiency) avoiding reliability and safety issues

Internal “continuous” EGR complying with antipollution laws, without additional radiators and electronic parts exposed to high temperatures or vibrations (reliability and simple design)

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ASTRA ADT 30D

The fan speed is determined by a thermoregulated viscostatic joint, according to the cooling need, thus reducing noise, fuel consumption and speeding up the achievement of the ideal engine temperature in cold climates

Thermoregulated fan speed

External fan ring: improves the fan efficiency avoiding the air recirculation in radial direction

ATB = 50째C... HEAT RESISTANT The pneumatic circuit, exploited for the brake system, the operator seat suspension, the cab cleaning kit and the setting of the turbo geometry is cooled by a specific air/air radiator

Refrigerant Intercooler

A/C condenser

Compressed Air

Hydraulic oil

The Dumper can perform normally with an ouside temperature of 50째C without heating the refrigerant over 100 degrees (Air To Boil: ATB)

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In case of anomalous “power train” (engine and transmission) temperature or oil pressures, a protection system (Sentinel System) reduces the power of the engine to avoid damages to the main components

n “Sentinel System”: protects engine and trasmission

“ LIMP HOME ”... ALWAYS BACK HOME “Limp Home” is an electronic system allowing the machine to operate at a lower power even with damaged components: for example, it excludes a defective engine cylinder, allowing the remaining ones to operate correctly to get the machine back to the workshop.

Equally, it excludes an anomalous transmission gear, allowing the correct operation of the remaining ones

Electronic engine control unit (on anti-vibration supports) cooled by fuel circulation

costruzioni April 2010

ASTRA ADT 30D

BLACK BOX: INNOVATIVE ELECTRONICS n Electronics for low fuel consumption and easy diagnosis/mainte nance Anomalies stored and displayed on the dashboard can be sent to external computers for a detailed analysis.

The on-board computer monitors and manages thousands of data on vital components of the Dumper, in order to assure efficiency (lower fuel consumption), performance and reliability, as well as assisting the maintenance of the vehicle

costruzioni April 2010

Menu selector on board

DISENGAGE PARKING BRAKE!

Powerful alternator 90 A

High capacity batteries (2 x 170 Ah)

THE MOST POWERFUL ALTERNATOR (90A) n Tidy electrical layout (reliability)

n Electronically controlled transmission “Ergopower” ZF (6 + 3) with integrated differential lock (100%) (soft shift and traction) Soft automatic gear shifting for better comfort and reliability

Low ratio torque converter (1:2,08) to reduce stresses on gearbox and with automatic lock up in all gears (lower consumption)

“Eco” operating mode (selectable by the driver) allows gear shifting at a lower engine speed to reduce fuel consumption

“Eco” mode for lower fuel consumption

ASTRA ADT 30D

WALKAROUNDMACHINE Electric tilting system

n Electric hood tilting system n Excellent access to engine and radiators Rust-resistant fiberglass engine hood, easy to repair and heat resistant

Hood hinges with greaser

EASY MAINTENANCE Exclusive ground-line start up

Exclusive switch for electrical circuit cut off (besides the switch in the cab) to avoid battery discharge during long inactivity

costruzioni April 2010

Ground emergency stop

n “Modular” fuel and hydraulic oil tanks, easy to remove in case of extraordinary maintenance

n Emergency mechanical steering n No belts to stretch

In case of emergency, the steering system is powered by a ground driven gear pump (instead of being activated by an electric motor - safety).

Moreover, unlike steering systems with intermediate distributors, the same “ Orbitrol pump” controlled by the steering wheel allows the steering in case of emergency (even without hydraulic servo-assistance).

In normal conditions, the steering system is powered by the main gear pump

Filter clogging and low fluid level are displayed on dashboard avoiding direct checks

MAINTENANCE

Automatic belt stretcher High traction Polyvee

costruzioni April 2010

ASTRA ADT 30D

Cab hydraulic tipping system

n Extraordinary easy access for Powertrain maintenance

SWING OUT FENDERS costruzioni April 2010

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SIDE TILTING CAB ANGLE 57째

Easy access to battery box

Easy fill up from ground

costruzioni April 2010

n New front rigid axle with “drop-box”

Drop box

Telaio ad “A”

AIR-HYDRAULIC SUSPENSION

ASTRA ADT 30D

n The front axle is hanging on two air-hydraulic cylinders linked to the chassis with Panhard rod and “A” frame

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Central reaction bars

Rubber bushes

Rear suspension with walking beams hinged to axles through rubber bushes and integrated by central reaction bars

AXLE OSCILLATION: 23 CM

n Rear “articulated� suspension (maximum stability on uneven ground) Higher oscillation of the axle

n Saddle support for walking beams The rocker pin supported by both sides (instead of one as for overhanging supports) reduces the bending stresses, increasing reliability and strength of the structure

costruzioni April 2010

ASTRA ADT 30D

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n Cast articulation joint Avoids welding in critical areas (reliability)

n Great diameter of the hitch (58 cm) 58 cm

n Hitch with double row ball bearing (reliability) Excellent reaction to stresses

STRONG STRUCTURE

Strong rear window protection and steering cylinders

Spherical joint

costruzioni April 2010

Bolted cap for easy access on the body tipping pin

Self-centering spherical pin head

n Spherical tipping pin, with bolted cap (self-centering)

n Spherical bushings to avoid radial stresses and to increase the lifetime of the tipping cylinders (reliability)

TIPPING CYLINDERS “SHORT AND PROTECTED�

The spherical bushing on the cylinders avoid the radial stresses extending the gaskets life (reliability)

Cast saddle

Great distance between tubular side members (reliability) for a higher torsional resistance.

Short tipping cylinders located inside the rear chassis for a better protection

The low hinging point (77 cm) of the cylinders increases stability while tipping the body.

The cylinder is protected by a cast saddle which avoids welding in critical areas (reliability)

Great distance between side members

costruzioni April 2010

ASTRA ADT 30D

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n Wet disc brakes integrated in wheel hubs (available)

n Limited slip differential lock (45%) on axles to transfer the torque according to the grip of each wheel n Standard reinforced body (15 mm) n On road homologation with unloaded vehicle, at 40 km/h (within 3 m, without permits)

27째

2,36 m

n Larger wheel track (stability)

n Approach angle of 27째 (better overcoming of obstacles)

ARCHITECTURE AND CONSTRUCTION n Generous shock- and shear-resistant fender rims

costruzioni April 2010

ASTRA ADT 30D

148 cm

Telescopic and adjustable steering column

n The cab is easily accessible, with15 air inlets and... ...outside temperature indicator

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Engine brake

12 V plug (for cell phones)

FOCUSED ON COMFORT

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The high windscreen (with “long” wiper blade”) and the sloped hood profile ensure an excellent front visibility

Wiper blade 65 cm

n Excellent front visibility

n Thermoinsulated, rust-resistant roof, with drains to avoid drops on windscreen

Drain

Drain

Abstract from Costruzioni n. 636 April 2010 - Year LIX Casa Editrice La Fiaccola s.r.l. - Via Conca del Naviglio, 37 - 20123 Milano www.fiaccola.com Printed by Everprint Carugate (MI)