Argyle Diamond Mines has commissioned a fleet of articulated dump trucks, specially modified to cart pre-mixed shotcrete underground.
In a project initiated by the mine’s site consultant Brent Carter, the trucks have been redesigned and engineered to take a purpose-built 7m3 agitator/mixer drum.
Argyle’s new fleet of subterranean cement trucks uses the cab, chassis and sub-frame of Hitachi’s 6-wheeled AH300D Mk 4 articulated dump truck. Designed and built by Hitachi, the chassis were shipped to Perth where all modifications, including the mixer drum and drive mechanism along with bringing the truck up to Australian underground specifications, were completed.
The front half of the truck is standard AH300D, powered by a turbocharged MercedesBenz Tier 3 diesel engine and getting the power to the ground through a 6-speed gearbox.
To allow the mixer drum to be fitted, one set of wheels has been removed.
The new truck is constant four-wheel drive. Along with the agitator and associated controls, the customising includes a new full ROPS/FOPS cab, new rear chassis assembly, 25.5R25R rear tyres, 20.5R25F front tyres and wet disc brakes all round (from the 50-tonne AH500D model).
Brent Carter has nothing but praise for the design of the trucks.
“As well as improved OH&S, the trucks are reducing operating costs, increasing productivity and providing greater reliability,” he said.
“These new artics are meeting all our expectations.
“The 7m3 drum means we are now carting some 75% more product than the road-going trucks (which are fitted with a 4m3 drum). They are exceptionally safe vehicles and perform well in the environment at Argyle.”
Hitachi Construction Machinery
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