1lic

hydrauAFiglrdril

046

1974

1974

IMT is founded by Mr. Giulio Accorroni.

IMT is founded by Mr. Giulio Accorroni.

2005
1975
IMT patents an innovative drilling system related toThe first innovative hydraulic drill rig (model 75 type
2005
1975
highly seismic grounds, the “Multi Rotary driven SoilG) is patented. Capable of drilling up to a depth of 30
patents
an innovativedrilling
related Pile”.
todrill rig (model 75 meterstype (bestIMT
marketperformanceat thetime)system Mixing
highlyseismicgrounds,the“MultiRotarydriven
Soilling up to a depth of 30
2006-2008
1978MixingPile”.
erformanceatthetime)
IMT increases its production range and doubles its sales.
The Accorroni family buys 100% of IMT shares and Giulio
2006-2008
1978Accorroni
Andrea Accorroni, current President of
is appointed IMT’s sole Director.
IMT increases its production 1984
range and doubles
its sales.
of IMT shares and Giulio
IMT INTERNATIONAL
S.p.A
AndreaAccorroni,President of 2009-2010
nted IMT’s sole Director.
Andrea Accorroni
takesover IMTcurrentmanagementINTERNATIONAL
S.p.A
IMT reacts to the global economic crisis by launching
following 1984
the death of IMT
his olderbrother, (FabioAccorroni
2009-2010
over IMT management
2 new product lines in the market with traditional, Giulio’s first son)
IMT reacts to the global economic
launching(the “AG” series, assembled on HITACHI base,rother, (Fabio Accorronitechnology
1985 crisis by
2 new theproductlines inwhich
the market, Giulio’sson) introduces
and the “A” series, mounted on IMT base), and completes
Thefirstcompany
805 model,
soon with traditionaltechnology(the“AG”
series,assembled
onthe
HITACHIbase,1985
first prototypeof drill rig for seismic grounds,
becomes very successful and used for big construction
andthe“A”
series,mountedonIMTbase),andcompletes
805 model,
whichsuchsoonas the Sagrada Familia in Barcelona, Spain.
the AF460 model, which uses the patented “Multi
projects,
the first prototype of drill rig 1992
for seismic grounds,
sed for big construction
Rotary driven Soil Mixing Pile” system. The prototype
theAF460model,
whichuses
thepatented“Multimilia in Barcelona,
Spain.
is presentedat BAUMA 2010, the most important
New innovative models are launched (i.e., sound-proof
RotarydrivenSoil
MixingPile”
system.
The
prototype
1992
international exhibition for construction machinery. The
machine and model AF12, assembled on a crawler baseis presented
at BAUMA
2010,
the most importantnched (i.e., sound-proof
complete production range is developed thereafter.
completelyproducedby IMT).
international exhibition for construction
machinery.
The
mbled on a crawler base
2011
1993
completeproduction
range
isdevelopedthereafter.
etely producedbyIMT).
IMT AGM appoints a new Board of Directors.
Beginning of co-operation with Caterpillar (CAT): IMT
1993
2011/2013
starts assemblingdrill2011
rigs on CAT bases (IMT is the firstIMTAGM
appoints
anewBoardofDirectors.
th Caterpillardrill(CAT):IMTIMT develops the prototypes for the full range of the
rig manufacturer to do this; other manufacturers
AT bases (IMTthe first
AF series drilling rigs with Tier 4 engines, as well as thewillissoon
follow the 2011/2013
example); IMT starts a distribution
IMTAmerica
develops
theCanada
prototypes
the full rangeof the A125 and A150 models, mounted on IMThis; other manufacturers
newly-bornagreement in North
andfor itsfor
drill
AFbasesseriesthroughdrilling rigs
withdealer
Tier 4 engines,
aswellandas theIMT starts arigs
distribution
base
powered by CAT.
mounted on CAT
the CATin
newly-born
A125
and
A150
models,mountedon
IMTa and Canada
for
its
drill
2014/2015
Miami, Kelly Tractor Company In the same period, thebase
andusedpoweredCAT.
rough the CAT
dealer in for driven
IMT upgrades the A-series machines with new engines
technology
pilesin theby
U.S.
until then2014/2015
In the sameperiod,
the towards
and design, and develops its own particular water wellstartsmovingthe European piling system andIMT
upgradestheA-seriesmachines
withnew engines
ed in the U.S.
until
thentechnologysystem.
the drilling equipment demand in the US market for all
and manufacturers
design, and develops
itsownparticularwater wellpean piling system and European
2016/2017
starts growing.
technology system.
d in the US market for all
The brand new range of A-series rigs with Tier 3
1997
2016/2017
acturers starts growing.
engines, completely designed and developed by IMT,IMT produces the AF50, the biggest drill rig in theThesells
brandrangeof Japanese
A-series rigs withandTierlauched
3
into the market, as well as the AF-series
world at1997
the time, andno. new
7 units
to theengines,
completelydesignedanddevelopedby IMT,
he biggest drill rig inthemachines,
mounted on CAT bases with Tier 4 Final
multi-national
company Sumitomo. Giulio andintothe market,
as well as theAF-series
7 units to the JapaneseenginesAndrea Accorroniand
arelauchedinvited toOsaka
for a lecturemachines,
mountedonCATbaseswithTier4 Finaly Sumitomo.onGiulioandthe technical characteristics of the rig. The lectureengines
ed to Osaka forisa attended
lecture by theowners/directors of the biggest
cs of the rig. The lecture
Japanese construction companies.
directors of the biggest
onstruction companies.

Andrea Accorroni
Andrea AccorroniAF 460

1

The AF460 is a drill rig that can easily
overcome any kind of problem on the job site,even the most difficult ones.
The rig has been conceived for foundation
piles, and even cased piles, for diameters up
to 4000 mm and a depth of 110 m.
The AF460 is mounted on Caterpillar 385C
hydraulic excavator with lowers undercarriages, dismountable with the aid of stabilizers,width 5,9 m. IMT has studied every part indetail to ensure maximum reliability andperformance.

OPERATOR STATION
Besides the comforts available on the CAT base(adjustable seat, air conditioning, etc.) the rig
controls in the cabin of the AF460 are rationally distributed.
The main controls, such as main winch, upper
rotation, rotary, pull down, speed change, footmast are operated by means of two main
joysticks. The vertical position of the mast canbe obtained automatically with a button
situated above the cylinder joystick.
The computer gives all the information on thebase functions as well as data on the soilresistance. It is possible to check verticality ofthe mast on the computer at any moment.
The computer also shows the upper rotation
position with respect to the rig. It is also
possible to rotate the upper automatically to
go back to the exact drilling position by using abutton located on the upper rotation joystick.

3BASE AND UNDERCARRIAGEThe AF460 uses a CAT 385C base. Caterpillar
installs a CAT C18 Acert Tier 3 type engine on
this base which is set to supply a power of 390
kW (530 HP) at 1800 rpm.
In order to utilize the power of the diesel to themost so as to guarantee maximum performance, IMT installs a load sensing hydraulic system,
together with the Caterpillar original for pull
down (as well as for services); this translates
into extremely high productivity.
The undercarriage of the AF460, manufactured by Caterpillar on the basis of IMT withlowers length at 7.300 mm and at width of
5900 mm which guarantee exception stability
in any type of ground; the track shoes have awidth of 900 mmROTARY
5The rotary of the AF460 was conceived forunlimited duration. To the side of the rotary,
three transmission groups, formed by hydraulicmotor, gear and reducer moves the twopinions. The rotary is capable of transmitting atorque of 460 kNm to the tool.
The operator can change speeds from inside
the cabin; there are six different speeds tochoose from. The working speeds vary from 7
to 16 rpm. The unloading speed can vary from32 to 75 rpm. During the drilling phase, therotary has the entire power of the diesel at iscomplete disposal. The rotation speed andeffective torque on the tool are continuously
recorded by the on-board computer.
With the rotary is supplied a universal joint forthe direct installation of casings.

KELLY BAR
The standard Kelly bar is 4/74. The 4/60, 4/90
and 5/110 types are also available. The squarejoint is available with sides of 200 mm. All kelly
bars have automatic blocking patented by IMT;
this allows the blocking of the telescopic
elements in any position, permitting thetransfer of pull down, pull back and torquevery quickly.

7WINCHES
The winches are positioned on the base (mainwinch) and on the mast articulation (auxiliarywinch), in front of the cabin, so that the operator can constantly check the proper operation.
During the lifting and lowering phase, themain winch has the entire power of the diesel
at its disposal; this gives the machine considerable speed and therefore maximum productivity. It has a hydraulic “down the hole” system
which prevents the unwinding of the cablewhen the tool reaches the ground. Anothersystem, called “free flow”, allows the cable toadvance in the drilling phase when the rotaryadvances. The on-board computer constantly
displays pullback, speed and tool position. Themain winch has a maximum pull of 450 kN anda speed of 54 m/min. The auxiliary winch has amaximum pull of 180kN and a speed of80m/min.

MAST
It is built with high-resistance material, capableof supporting considerable stress with reduced
weights (and therefore inertial force). The
verticalization of the mast can be obtained
automatically at any moment.
The head of the mast is positioned at the top
and has a “Y” shape for the pulleys of themain and secondary winches. The lower
extremity can be disassembled when working
with casing oscillators of considerable size. Themast housing cylinder is positioned on thelower part.

ARTICULATIONThe AF460 utilizes a parallelogram type articulation.
All the articulations of the machine use
casehardened pins and bushings of large
dimensions which guarantee maximum
precision tin time. The parallelogram typearticulation offers the following advantages:• possibility of moving the working axis accurately without losing the verticality of the mast.
• possibility of working in a large range(essential when working with casing oscillator).
• correct anchoring of the mast by means of ahinge and tilting cylinder anchored at the top.

9CROWD SYSTEM
The patented 3 crowd cylinders system of theAF460 is positioned on the mast and it is used
to transfer push and pull on the rotary. Thanks
to the automatic blocking system patented byIMT, the push of 620 KN and pull of 710 KN
are transferred directly to the tool with a strokeof 10260 mm

AF 460TECHNICAL DATA

11

A 215 - Hydraulic Drill Rig
Worldwide sales and assistance network

Canada and U.S.A. (North America)

United Kingdom
Spain
PortugalMexicoMalta / L

IMT dealers, a global network at your service
IMT, like very few other companies in the field,
has a global commercial and assistance network wich ispresent in over 30 countries.
From any part of the world IMT clients know which they
can always count on fast and efficient service.

16

A 215 - Hydraulic Drill Rig

RussiaSweden - Denmark

Turkey

Libya
Egypt

IsraelIran
GCC Countries
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Nigeria
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I.M.T. S.r.l. - Industria Meccanica Trivelle
via D’Ancona,39 60027 Osimo (AN) Italy
Tel. +39 071 723341 - Fax +39 0717 133 352
imt@imtspa.com - www.imtspa.com
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