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The
power and the glory
Atlas Copco's conquering
crawlers are ready to set new standards
The ROC Power Generation
is a series of new surface drilling rigs with larger and more
powerful engines and compressors, resulting in an increased capacity
and higher productivity - even in the most inaccessible places.
The first rigs in the company's new ROC L and ROC D ranges also
make their debut at Las Vegas - and further models will be introduced
later in the year.
The big bencher
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The
ROC L8: Imposing appearance and high productivity.
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The
new ROC L8 is Atlas Copco's largest down-the-hole surface crawler.
It is a high-production rig for hard rock with deep hole capacity
for drilling holes up to 165 mm (6 1/2") in diameter and
benches up to 54 m (177ft.) in quarries and open pit mines.
The rig replaces and extends the area of Atlas Copco's well-proven
ROC 860HC unit and, with 24% more engine power and the increase
of hole diameter up to 6 1/2 inches, it spearheads the company's
entry into large-scale, high production cement and limestone quarries
and into large open pit mines for hard rock applications.
The rig provides a strong alternative to conventional rotary rigs
by offering higher productivity thanks to great flexibility. The
track oscillation and low centre of gravity makes travel easy
and leaves more time for drilling. Furthermore, drilling flexibility
(+/-30° sideways, +30° forward), in combination with the
boom swing (-20° left and +25° right), will tackle the
most demanding operations.
The feed length is prepared for 6m drill tubes and the drill tube
magazine contains six with one tube kept in the feed.
Equally important is the increased power provided by a CAT 3196
ATAAC engine. This water cooled, turbo-charged and after-cooled
unit provides 317kW (431 hp), more than enough to tackle the most
demanding quarry work.
Added to this is an on-board screw compressor - the XRV 9 - which
has an increased working pressure up to 25 bar (363 psi) and delivers
405 l/s (858 cfm) which provide excellent flushing of the drill
hole.
The rig is equipped with Atlas Copco down-the-hole hammers, ranging
from the COP 44 (110mm / 4 5/16") to the COP 64 (165 mm /
6 1/2").
Even though it drills large holes, the rig's compact design makes
it easier to transport from one worksite to another.
More power with the CAT
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The
ROC F9: the most powerful in its class. |
Next in the line-up
is the ROC F9 which is also fitted with the powerful CAT diesel
engine and has more power and strength than any earlier rig of its
size.
Compared with the ROC F7, the CAT engine on the new ROC F9 (231
kW (313 hp) gives 35% more power and 31% more air capacity. And
before it was launched onto the market, hundreds of drilling experts
at quarries and construction sites in North America were consulted
and their views incorporated into the master specifications. It
is available in two versions - ROC F9 for conventional tophammer
drilling or ROC F9 CR, which incorporates the Coprod system for
fast and straight drilling. An on-board Atlas Copco 188 l/s (400
cfm) screw compressor provides excellent air flushing, ensuring
clean and easy-to-charge holes.
Its powerful COP 1800 rock drills have Atlas Copco's unique double-dampening
system which gives longer drill string life and higher penetration
rates. And the long boom reach gives a larger drilling coverage
area resulting in more holes drilled per set-up, less tramming and
easier access to difficult locations.
Rock drills on the Coprod version can be fitted with TED (Tube Extraction
Device), a reverse percussion system which automatically releases
the drillstring if it gets jammed during removal.
The long reacher
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The
ROC D7: Fast and easy progress over difficult terrain.
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The smallest of the
trio is the ROC D7 which replaces the ROC 742 and is designed for
drilling in the 64-102 mm (2 1/2"- 4") range. The beauty
of this one is the boom - a new round, lightweight boom concept
providing the exceptional reach of 5,7m (18 ft. 8") and a total
coverage area of up to17m2 (182 sq. ft.).
The aluminium cylinder feed system ensures smooth and controlled
feeding and contributes towards long drill steel life at low cost,
a high penetration rate and high productivity. The ROC D7 also has
outstanding climbing and tramming abilities offering swift progress
over difficult terrain.
There is a choice of engine - either a CAT of 147 kW (200 hp), or
a Deutz of 152 kW (207 hp), both water-cooled and turbo-charged,
and is equipped with rock drills in the COP 1800 series.
Excellent flushing is achieved with the Atlas Copco C 106 on-board
screw compressor, delivering up to 127 l/s (270 cfm).
Winching, tramming and boom positioning are remote controlled and
a rigid, hydraulic support leg provides added stability when tramming
and climbing. Furthermore, the ROC D7 can be supplied with or without
a cab.
All the rigs in the new range are available with Atlas Copco's state-of-the-art
cabins which have large, panoramic windows for maximum visibility
and the front windows are angled to avoid dust and oil accumulating
on the glass.
The cabs are the latest in ergonomic design with controls in the
armrests of the chair for increased comfort and safety. The chair
is fully adjustable, swinging out towards the door of the cabin
for easier exit and entry. The cabins are also ROPS/FOPS approved
for maximum safety.
Controls and instrumentation in the cabs depends on the drilling
method being used. Another common feature is Atlas Copco's unique
double drill steel support which together with the breakout table
gives improved collaring and straighter holes, thereby providing
an opportunity to reduce drilling and blasting costs.
There is also a wide range of optional equipment including a hole
inclination and depth control instrument, water-mist system for
hole stabilization, air-conditioning and an electric refueling pump. |
