Komatsu has released the D375Ai-8 ‘intelligent’ dozer, the company’s first mining dozer incorporating its fully integrated intelligent Machine Control system, which delivers proven productivity, efficiency and cost-saving benefits.
|Komatsu’s new D375Ai-8 intelligent Machine Control dozer|
The 72.9 tonne D375Ai-8 is powered by a US EPA Tier 4 Final emission certified Komatsu SAA6D170E-7 diesel rated at 455 kW in forward gears, and 558 kW in reverse, to provide more reversing power for higher productivity.
According to Michael Hall, Komatsu Australia’s Mining Product Manager, the iMC version of the dozer can carry out both bulk and final trim dozing in fully automatic mode from start to finish, delivering final grade performance and accuracy.
While this is Komatsu’s first mining machine fitted with integrated Machine Control, the concept has been successfully used on its smaller and mid-sized dozers across Australia and New Zealand over the past three years.
“The concept has been shown to significantly increase productivity and efficiency – up to twice as productive as dozers fitted with ‘bolt-on’ third party machine control systems according to Australian users and operators – while reducing the cost of each metre of material moved,” said Mr Hall.
“This will deliver major benefits to mining operations across the board, whether in bulk overburden moving, chasing thin or narrow seams, for mine infrastructure works, for stockpile management, or in rehabilitation projects.
“This technology offers significant safety benefits in stockpile applications with a remote control-ready option available,” he said.
As well as mining operations, the D375Ai-8 also has applications in quarrying and heavy construction projects.
The D375Ai-8 intelligent dozer incorporates as standard a factory-installed fully integrated Global Navigation Satellite System machine control system, which eliminates the need for coiled cables between machine and blade.
“An enhanced sensor package combined with an intelligent logic system provides for high accuracy in a fully integrated system without the need for traditional blade-mounted sensors that can be subject to damage, theft or vandalism,” commented Mr Hall.
Komatsu’s integrated Machine Control system automatically controls blade elevation and tilt according to target design data, using common industry standard design data software and systems.
“With these machines, not only can the automatic machine control features be used for final grading but also for bulk dozing – a capability which is unique to Komatsu intelligent dozers,” said Mr Hall.
Dozing progress can be checked using the integrated as-built mapping display, which collects surface data by continuously measuring actual elevations as the machine operates.
This data is also communicated back to the planning software to enabling monitoring of actual material movement by planning and management personnel.
Komatsu’s intelligent dozer technology is also readily integrated with its SMARTCONSTRUCTION offering, which combines drone-based survey and site management systems and cloud-based information offerings to design, plan, construct and manage mining, quarrying and construction operations.
The new D375Ai-8 is based on the recently released D375A-8, which features a combination of a fuel-efficient low-emission engine, increased reversing power and enhanced chassis and track frame durability to deliver significantly lower operating costs per metre of material moved.
It is powered by a Komatsu SAA6D170E-7 Tier 4-compliant diesel engine that not only greatly reduces emissions compared with previous generation engines, but also reduces fuel consumption through a heavy duty EGR (exhaust gas recirculation) system, a hydraulically driven radiator cooling fan and Komatsu auto idle stop.
Production efficiency is enhanced through increasing engine power by 20 per cent when in reverse, reducing cycle time in downhill dozing applications – the most efficient method of bulk dozing.