EH3500AC Presentation.ppt

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Richard Schloss Richard Schloss Paddy OLoughlin Paddy OLoughlin Untung Prihardiyanto Untung Prihardiyanto Feriwan Sinatra Feriwan Sinatra

Welcome to Australia

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HITACHI

EH3500AC

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Truck History Truck History

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1!" #o1!" #ol$o ac%uires &lark'(ichigan) owl$o ac%uires &lark'(ichigan) owner o* +uclidner o* +uclid

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1, H&( -uys ./0 interest in +uclid1, H&( -uys ./0 interest in +uclid

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1 H&( -uys into ,/0 interest) R./ is introduced1 H&( -uys into ,/0 interest) R./ is introduced

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1! 2e$elo3ment o* R.!/A& 3rototy3e) H&( ac%uires !/0 interest1! 2e$elo3ment o* R.!/A& 3rototy3e) H&( ac%uires !/0 interest

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1 4ntroduced the R1 4ntroduced the R.!/A&.!/A&

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./// +H15// is launched) through this year all model names change to./// +H15// is launched) through this year all model names change to

+H models) ending the long run o* the R and &H designation that

accom3anied the Payload in U6

accom3anied the Payload in U6S6 tons) #ol$S6 tons) #ol$o interest reduces to /0 o interest reduces to /0 at theat the

end o* this year

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.//7 +H"/// is introduced) esta-lished the 8lo-al (ining &enter 98(&:.//7 +H"/// is introduced) esta-lished the 8lo-al (ining &enter 98(&:

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.//, +uclid'Hitachi Hea$y +%ui3ment -ecomes Hitachi &onstruction.//, +uclid'Hitachi Hea$y +%ui3ment -ecomes Hitachi &onstruction

Truck (anu*acturing Ltd6

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.// +H5"/'7 and +H11//'7 are introduced.// +H5"/'7 and +H11//'7 are introduced

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.//5 +H15//'7) +H7"// ; +H"/// A& 44 948<T: are introduced.//5 +H15//'7) +H7"// ; +H"/// A& 44 948<T: are introduced

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.//! +H,///'7 A.//! +H,///'7 A& ; & ; +H,"// A+H,"// A& 948<T: & 948<T: to -e to -e released *or testingreleased *or testing

Past .7 years Past .7 years

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(echanical 2ri$e) (echanical 2ri$e)

• +H15// 91// mt:

2& +lectric 2ri$e Trucks) 2& +lectric 2ri$e Trucks)

• +H7/// 91"/ mt:

A& +lectric 2ri$e) A& +lectric 2ri$e)

• +H+H77"//"// 91/ mt:91/ mt: • +H,"// 9.!/ mt: • +H"/// 971" mt:

Hitachi Rigid Dump Truck Range

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Dump Truck Series

98(W .7/ m't o$er:

 (echanical 2ri$e

 +lectric 2ri$e) 2&

 +lectric 2ri$e) A&

(a=imum 8ross (achine Weight 9 m'ton:

EH3000 EH4500 EH5000

785C 789C 793C 797B

HD1500-5 630E 730E 830E 930E-3

MT3300AC MT3700B TMT260AC MT5500 MT3600B T252 T262 TI 272 T282 500 550 600 250 300 350 400 450                       EH3500 EH4000

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• Cummins QSK50 Tier 2 compliant engine • 1,491 kW SA !1995, "ross ngine #utput • $ig%est retar&ing per'ormance in it(s class

• A&)ance& AC &ri)e s*stem allo+s lo+ maintenance time an& cost

• Super &ri)ing per'ormance an& %ig% e-cient c*cle time

• 1.5 tonne /a a*loa& • 3005 or 426905 T*res • 325,000 kg "/W

• St& 7o&* Capacit* 1104 m3 SA 281

• Trolle* option a)ailale • ,.1 k : 1500 / ;/a Tor<ue= / ""// 17"// !/ 1.!7/ 1!/ ,7./ 11// ,7"/ 51/ 5/,/ "/ 75/ "./ ,// 1,"/ "5./ // "> ./,/ !!/

Features:

"7/

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1. Development, Manufacturing

• Transferred to Japan from USA & Canada

• ig! relia"ilit# Japanese parts and components

• $ntegrated development, manufacturing tec!nolog# and know-how _{of !#draulic e%cavators}

. 'ngine

・

Cummins T$'( $$ )))!p *. T#res

・

*+.))(+, -/)(+ -. AC drive s#stem

・

itac!i AC s#stem from 0' DC s#stem . rame design  Structure upgrades

Major Changes on EH3500:

(a?or &hanges on +H7"// (a?or &hanges on +H7"//

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(aker @omatsu &AT 4tem Unit +H7"//A& +H7"// 57/+ 5!& (anu*acture '' &ummins &ummins &ummins &AT (odel '' S@"/ @.///+ @.///+ 7"1<

Out3ut98ross: kW 1,. 1,. 1,. 1,15

2is3lacement L _"/67 "/67 "/67 6/

(anu*acture '' _Hitachi 8+ 8+ &at

2ri$e System '' A& 2& 2& echanica

(odel '' _'' State='7 State='7 ABT

T i r e SiCe '' _756//'R"5 756//' R"5 756//'R"5 756//' R"5 &a3acity SA+ .D1Hea3ed m7 _11/6, 11"61 11/6 1/,65

Width mm 577/ 577/ 5."/ ,/

(a=6 8(W m6ton _7."6/ 7.,67 7.,67 7156" E(W m6ton 17"6" 1716/ 17!6/ 1,/6" (a=6 Payload m6ton 1!6" 1767 1!67 1556/ (a=6 S3eed kmBh " ""6, ""65 ",6, 8rada-ility Full Loaded 0 ."6. .,6. .,6. ."65 (a=6 Retarding Angle9Full Load 0 _1"67 116 116 1,6

(a=6 Retarding S3eed 1/0 7 ₇₅ 7 7 7/

(a=6 Height mm _/ 75/ ."/ 1"/ (a=6 Width mm 51/ 55// 5",/ 55, m e n s W e i g h t P e r * o r m a n 2 r i $ e S Hitachi + n g i n e < o d S3eci*ication &om3arison S3eci*ication &om3arison kmBh

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o pe r a t i n g %

o u r s

DC System

Contactor Tip eplacement 2,500 %rs

Traction /otor 7rus% eplacement 2,500 %rs Commutator Turn > ?n&ercut ,500 %rs

W%eel /otor #)er%auls 25,000 %rs

AC System

,500 %rs @ C%oppers )s Contactor 6A @ AC n&uction /otor

6A @ AC n&uction /otor 30,000 %rs

A& $ 2&  Scheduled (aintenance A& $ 2&  Scheduled (aintenance

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+lectric 2ri$e (anu*acturers +lectric 2ri$e (anu*acturers

Limited

<e*ore D <e*ore D

Eow D Eow D

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Net Sales : 8,191,572 M

\

(68,150 M US$)

Employees : 339,572

Hitachi Global

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48<T Ad$antage Summary 48<T Ad$antage Summary

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Human 4nter*ace .///h3 &ho33er 17//kW . T( 8ear ; Wheel 8ear ; Wheel 4n$erter !//k#A T( Recti*ier 17,/kW ./kW ./kW 4n$erter !//k#A /k#A 9au=6: 2iesel +ngine 1"//k#A 9main: 8 8 ( &on$erter &ontroller 8rid Resistance ."kW=, A& 2ri$e System 2ri$e (otor 9A& (otor: &ontrol &a-inet 8rid <o= Alternator

2ri$e &ontrol 92S&:

A& 2ri$e System A& 2ri$e System

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1. High Efficiency Water Cooling 2. Pressurized Enclosed Structure

to prevent from dust 3. e! ".#$% &'()

$nsulated 0ate 2ipolar Transistor 1 - ) m _m 1 / ) m

m

-,))3 4 /))A Class

A& 2ri$e System  &ontrol &a-inet A& 2ri$e System  &ontrol &a-inet

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5!eel Motor Cooling an Control Ca"inet

6converters7

Alternator Cooling an

0rid 2o%

5!eel Motor CA2

Alternator) 2ri$e (otor &ooling System Alternator) 2ri$e (otor &ooling System

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• 4 parallel circuit gri& o

• etar&ing per'ormance is capale o' operating +it% onl* 3 resistor a'ter 1 resistor 'ailure

• $ig% e-cienc* cooling 'an minimums t%e re<uire& total output • Quiet cooling 'an

8rid <o= 8rid <o=

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AC Motor Driving

→ 8o Commutator on fan motor → Audi"le noise reduction

→ (apid fan start9up in response to t!e retard pedal → :ost9cooling operation for t!e resistors

0rid (esistor M 1));3A 6main7 <);3A 6au%.7 0 0 C!opper 0 M C!opper 1));3A 6main7 DC Motor Driving

A& $ 2& ' 8rid <o= &ooling Fan (otor A& $ 2& ' 8rid <o= &ooling Fan (otor

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Function 2escri3tion

(otor &ontrolB Retarder &ontrol

#ector &ontrol Current control of induction motor

<rake <lending 2lending of t!e electric "ra;e 6regenerated energ# from t!e motor_{consumed in t!e grid resistor7 and service 6!#draulic7 "ra;e} Auto &ruise &ontrol unction to limit t!e minimum ve!icle speed

Auto Retarding &ontrol unction to limit t!e ma%imum ve!icle speed Lim3 (ode &ontrol unction to drive =it! onl# 1 inverter motor Automatic Power

Reduction &ontrol unction to limit t!e output =!en detecting out of range temperature Sli3'Slide &ontrol unction to minimi>e t!e ve!icle from slipping or sliding "# motor tor?ue_control

Alternator &ontrol

(ain Alternator &ontrol unction to control t!e output voltage of t!e alternator corresponding to_{t!e engine speed, ve!icle speed and motor tor?ue signal} Au=iliary'Alternator &ontrol unction to sta"ili>e t!e output voltage regardless of t!e engine speed +ngine

&ontrol 8o$ernor &ontrol

unction to control t!e engine speed corresponding to t!e motor tor?ue signal and engine speed

Au=iliary Function

8rid 2ry unction to dr# t!e grid resister in cold or =et condition

2ri$e Shut 2own unction to s!ut do=n all po=er source =!en engine is still running <lower &ontrol Cooling control of t!e =!eel motor and main alternator

A& 2ri$e &ontrol A& 2ri$e &ontrol

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0 2000 4000 6000 8000 10000 12000 14000 16000 18000 20000 0 5 10 15 20 25 30 35 40 45 50 (km/h) M o t o  ! o  " # e ( $ ・ m ) 600k% 600k% 650k% &00k% Set !o"#e

$ncreased tor?ue due to output control 6Unused au%iliar# output7

A& 2ri$e  Out3ut &ontrol Per*ormance &ur$es A& 2ri$e  Out3ut &ontrol Per*ormance &ur$es

Vehicle Speed l !

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/ 1/ ./ 7/ ,/ "/ / 5/ !/ / / 1/ ./ 7/ ,/ "/ / S3eed 9kmBh: 9 = 1 ) / / / k g : / 1/ ./ 7/ ,/ "/ / / 1/ ./ 7/ ,/ "/ / S3eed 9kmBh: 9 = 1 ) / / / k g :

(im :ull Tor?ue 'lectric (etarding Tor?ue

AC@ Maintaining t!e "ra;e tor?ue at lo= ve!icle speed

'*))AC '*))DC

AC@ $ncrease of rim pull

A& $ 2& ' Rim3ull 2ata A& $ 2& ' Rim3ull 2ata

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A& 2ri$e ' Rim3ull &hart A& 2ri$e ' Rim3ull &hart

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A& 2ri$e ' Rim3ull 9Retard &hart: A& 2ri$e ' Rim3ull 9Retard &hart:

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Frame

Frame 2esign &hanges2esign &hanges

4ntegrated <eam

EH3500DC

EH3500DC EH3500AC EH3500AC

+limination o* $arious stress concentration areasD

Grid Box Side Beam Grid Box Side Beam Bolt Connection Bolt Connection

Plate Connection Area Plate Connection Area

High Stress High Stress Concentration Concentration Sheet Screw Sheet Screw

and Bolt Hall and Bolt Hall

Stress Distri"uted design, streamlined stress flo=B 8o plate Connection, S!eet Scre= & 2olt !all

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(AM' ST('SS A8AS$S

Trailing Arms ;

Trailing Arms ; SS3indles3indles Frame

Frame

Frame Stress Analysis Frame Stress Analysis

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+H7"//A&  <ody 2esign +H7"//A&  <ody 2esign

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Reduced Gear oil heating Reduction in Spline Wear

Eliminate center-shaft seal leakage

Eew Wheel (otor Reduction 8ear Eew Wheel (otor Reduction 8ear

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-#ehicle &onditionBFailure 2is3lay

 Hydraulic <rake Parking <rake Shi*t Le$er Position +lectric <rake

Accelerator Pedal Signal

+mergency Sto3 #ehicle &ontrolB&ondition 2is3lay +&( s &&U)2LU)42U H&( 2S&

#ehicle +lectronic &ontrol System #ehicle +lectronic &ontrol System

ngine Speed Setting

Alternator Control

Motor Speed Control

Vehicle Speed Moto!empet#e

Failure process Auto Cruise Control

'lteto

Auto Retarding Control

ngine Speed Control Hydraulic System Control

ie Moto Drive Limit Signal

(otor Tor%ue Signal 2ri$e (otor

&ontrol

+ngine &ontrol

+ngine S3eed Setting

+ngine 2ri$e Limit

Signal

#ehicle S3eed (otor Tem3erature (otor Warning) etc

(ulti'Function 2is3lay Same as Large SiCe +=ca$ator L&2 2is3lay

&ummin Hitachi Ltd6

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Increase

Increase in tyre and

in tyre and

component life

Easier

Maintenance

Superior

Superior speed

speed

in turn

First-rate

First-rate ride

ride

Fewer

lubrication

points

Excellent

stability

Operator

comfort

Coupled with

Coupled with NEOCON

NEOCON ride struts

ride struts

4nde3endent Trailing Arm 4nde3endent Trailing Arm

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ACCU9T(AC independent trailing arm front suspension =it! 8'ECE8 ride struts set t!e industr# standard in off9!ig!=a# suspension

NEOCON

NEOCON ride struts

absorb more energy than

rubber or nitrogen  oil!

E+O&OE STRUTS E+O&OE STRUTS

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+H7"//A&  Front Sus3ension +H7"//A&  Front Sus3ension

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True Ac;erman steering decreases tire =ear less steering error.

ess error t!roug!out t!e entire turning range.

$ntersection of front tire inner and outer steer angle =it! center line of rear a%le.

True Ackerman Steering True Ackerman Steering

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+H7"//A&  Hoist &ontrol +H7"//A&  Hoist &ontrol

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+ngine Hoist &ircuit <rake &ircuit Steering &ircuit HUS&O Hoist #al$e

Hydraulic System 4m3ro$ements Hydraulic System 4m3ro$ements

+H7"//2& #draulic

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+ngine Hoist &ircuit <rake &ircuit Steering &ircuit +G,//'" @P( @"#.//2TH #aria-le 2is3lacement Pum3

2irectional #al$e used on +=ca$ator *ront attachment

&ommon with Large SiCe +=ca$ator Return Filter

Single Hydraulic tank

@AA<A Hoist #al$e

Similar to the Large SiCe e=ca$ator

&ontrol #al$e

Hydraulic System 4m3ro$ements Hydraulic System 4m3ro$ements

+H7"//A& #draulic

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Hydraulic Tank Hydraulic Tank

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+H7"//A&  Load Weigh System +H7"//A&  Load Weigh System

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Automatic Retarding &ontrol

Keep vehicle downhill speed

constant & lower than set speed

Automatic &ruising &ontrol

Keep vehicle speed constant in set speed

Automatic &ruise ; Retard &ontrol Automatic &ruise ; Retard &ontrol

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Slip and slide

(educe tor?ue of =!ic! rotates faster.

8ote@ =!en slip or slide "ot! tire, ve!icle speed detection mig!t not correct

2ump Anti'Sli3 &ontrol

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(elease service "ra;e

:ress service "ra;e :ress accelerator S!ift lever or=ardB

F 1m

Anti'Roll -ack 

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• Bull* compliant to A Tier 2 /#$

emission le)els

• Suppl*ing t%e in&ustr* +it%8  cleaner, greener > <uieter engines

 pro)en Quantum tec%nolog*

 minimal installation c%ange  en%ance&

per'ormance

• n&ustr* support +it%

QuickServe &ummins S@"/ Tier . +ngine &ummins S@"/ Tier . +ngine

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Same O3tionsD • an Drives • Alternators • l#=!eels • Eil :ans • Au%. Drives • ilters • :relu" • Centinel • 'liminator • 't!er inGection 8o c!ange in air inlet connections 8o c!ange in mounting locations 8o c!ange in Gac;et =ater inlet  outlet connections 8o c!ange in e%!aust outlet connections

 Retains the same installation en$elo3e as the @TA"/B@.///+

 5/0 3arts num-er commonality

3irtuall# identical dimensions

S@"/ Tier . ' 4nstallation &hanges S@"/ Tier . ' 4nstallation &hanges

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./// .//1 .//. .//7 .//, .//" .// .//5 .//! .// ./1/ ./11 ./1.

7/. ' /. HP Tier1 Tier . Tier 7

/7 ' 5"1 HP Tier1 Tier. Tier 7

I 5"1 HP Tier1 Tier . Tier , Tier , Tier , US +PA (o-ile O** Highway

'mission levels 8E% /. 8E% H C <.- 70 reduction

6g;59!r7 C 1.* 9 9 9 9

CE 11.- CE *. 0 reduction

:M ).- :M ).) 70 reduction

 S@"/ certi*ied to +PA Tier . (OH le$els 91B1B/:

 #isi-le smoke $irtually eliminated at rated 3ower

 +ngine noise reduced -y !/0

 Achie$es lowest 3ossi-le *uel ; oil consum3tion

S@"/ Tier . &om3liance S@"/ Tier . &om3liance

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G7"//  Unit J.) User Test at &allide G7"//  Unit J.) User Test at &allide

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2e$elo3ment test 3rogress

Final dri$e *ailed 7 times

H&A S+

• Per*ormances tests ha$e -een com3leted success*ully in Fe-B.//56

• O3erational test 3rogress had -een slower than 3laned schedule due to 7 *inal dri$e *ailures and some other small 3ro-lems6

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Per*ormance and relia-ility test 9H&(: H&A S+

Per*ormance tests

I<asic 3er*ormance

IA& dri$e installation test I2ri$ing 3er*ormance I<rake 3er*ormance ISteering 3er*ormance I2um3ing 3er*ormance IEoise test IFuel consum3tion

I2ri$e *eeling e$aluation

Others

I2imensional measurement IFunction &heck

I(onitoring system *unction I#isual check

ISer$icea-ility &heck ISa*ety &heck

Relia-ility tests

IStress test on main structure Ihydraulic circuit 3ressure I+ngine installation check

I(ain com3onent installation check IHeat -alance 9&ooling test:

I+lectrical circuit test I#i-ration measurement IResonance 3oint check

All Per*ormance tests and Relia-ility tests had -een done su-?ect to H&( standard *rom Eo$B.// to Fe-B.//56

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Test result e=am3le 91: H&A S+ 56*0  3 5&*3 p++ 1&*8  3 18*2 p++ 1,*1  3 21*4 p++ 2,*6  3 30*8 p++ 13*6  3 16*4 p++ 21*4  5 18*5 p++ ote+ ? $M%@143325k .M%@325000 2ri$ing 3er*ormance <rake Per*ormance

Australian Standard (AS!"#$

Le$el ground 1./0 load " times

S3ec ".m measured ,/  ,,m ''''' Pass

%S Standard (%S'")$ *+rahoro

0 ram3 1./0 load " times

S3ec 1/.m measured 51m Pass

t #dmet m d  0 9: m p l d p d m 9 : m 35*1  4 32*5 p++

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Eew Load Weigh System accuracy

H&A S+

Standard loading  times A$e /60 (in '/60 (a= 16,0 Une$en loading Front side /670 Rear side 1650 Right side /6"0 Le*t side '1610 S3eci*ication MB' 76/0

Load Weigh System accuracy test with H&( truck scale 911thBEo$.//:

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Eperator comments !ave "een ver# positive e%cept visi"ilit# and noise in t!e ca". T!ese  items !ave "een improved during 1)))!r service.

H&A S+ O3eratorNs comments *or 3er*ormance

/A35 B Cpe(to D#e+tio00(ie

'ccele(tio0 Eeeli06

=et(d Eeeli06

Feeli06 #phill (ccele(tio0

!(eli06 Eoce #phill !(eli06 Eeeli06 (0d

+t(GilitH Fi0e co0tol (ccele(tio0

(0d et(d 0+t#me0t (0el i0+id

(G $eI mo0ito di+pl(H

$oi+e i0 the B(G

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H&A S+

Impo!eme"t (1) "o#se #" te %a&

,odification 

Add t!e sound attenuation

material under t!e operator ca".

6Done Sep))+ at 1)))!r service7

%mprovement 

-.*d2 in t!e Ca" 6I-.*d2 99 I)d27

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H&A

S+

Impo!eme"t (2) opeato '#s#&#l#ty

.ro/lem  .ro/lem 

T!e ladder and t!e platform in front of t!e ca" "loc; visi"ilit#. T!e ladder and t!e platform in front of t!e ca" "loc; visi"ilit#. ,odification 

,odification 

(edesign t!e ladder and t!e platform and replace. (edesign t!e ladder and t!e platform and replace.

6Done

6Done Sep))+ Sep))+ at at 1)))!r 1)))!r service7service7

E

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peat#o"al test (e&*2007 +Ma*2008 )

peat#o"al test (e&*2007 +Ma*2008 ) H&AH&A

S+

A$

A$aila-ility during o3erational test has aila-ility during o3erational test has -een a**ected -y -een a**ected -y 7 *inal dri$e7 *inal dri$e *ailures and small other 3ro-lems6

*ailures and small other 3ro-lems6 (ore than "0 o* down time are

(61)

i i de clmp de clmp i imm

Foce Eom tHe 81L Foce Eom tHe 81L (Iith E#ll lod 1*5.) (Iith E#ll lod 1*5.)

ede lod ede lod moto moto （i+ide）（i+ide） Gek Gek （o#t+ide）（o#t+ide）

Foce Eom tHe 81L Foce Eom tHe 81L (Iith E#ll lod 1*5.) (Iith E#ll lod 1*5.)

ede lod ede lod deEomi deEomi Cause of failure Cause of failure

NN*eforming *eforming of of housing +y housing +y the force the force from dafrom dagger clamgger clamp p ma,es ma,es sever esever edgedge load

load on

on the the rollers rollers of of +earing +earing and and damage.damage.

Housing Housing H&A H&A S+ S+ (odi*ication (odi*ication •

• Rein*orce Rein*orce wheel housing wheel housing to 3re$to 3re$ent de*orent de*orming6ming6

•

• (odi*ied *inal (odi*ied *inal dri$es were already dri$es were already arri$ed to arri$ed to Australia6Australia6

Impo!eme

Impo!eme"t (3) "t (3) #"al #!e &ea#"- .a#l/e#"al #!e &ea#"- .a#l/e

+timted c#+e oE mi Gei +#Ece Elki oE Eil die +timted c#+e oE mi Gei +#Ece Elki oE Eil die

Foce Eom de clmp @&1,L Foce Eom de clmp @&1,L

(62)

-adial

displacement

riginal &mproved

3#/

Effect of modification !as confirmed +y 0E analysis and stress measurement !ith actual final drive.

0E analysis !as done +y HC and other Hitachi group engineering company.

H&A S+ Impo!eme"t (3) #"al #!e .a#l/e (%o"t)

7mple oE

F

lH+i+

e+#lt

(63)

H&A S+

Cause :_{#ring o' rake caliper +as &amage&}

Impo!eme"t () Se!#%e ae #l 4ea

Action : C%ange t%e material o' #ring

$ar&ness 8 #riginal 0$s  /o&iDe& .1$s

Wit%stan& pressure 8 #riginal 43/pa  /o&iDe& 113/pa ConDrmation test ;n&urance test=

105E F 21/a F 200,000c*cles  Pass

<rake cali3er 2amaged O'ring

(64)

&AE 9@e'&AE:

&AE

9SA+'K17:

ard=ire

2S& Drive s#stem Controller 2# itac!i td

+&( 'ngine Controller Unit 2# Cummins

'ngine (ev. speed

'rror information

6Multi pac;et data7 'rror information 6Multi pac;et data7 Can not receive

man# data at once

&&U'42U &ommunication

+rror

occurring =!ile receiving additional data

42U$nformation displa# Unit

2is3lay 4n*ormation 9Payload6 +tc: (ulti Packet dataBsec

2LU Data logger Unit

Eum-er o* data increased at 1///hr Eum-er o* data increased at 1///hr

&ommunication error occurred a*ter 1///hr modi*ication -ecause num-er o* data *rom &&U and 2LU to 42U increased -y changing so*t ware6

42U so*tware was u3graded to -e a-le to recei$e data and 3ro-lem was *i=ed6

&&U Main Controller Unit

Impo!eme"t (5) Ele%t#%al a/lt (4#" eo) H&A S+

(65)

H&A S+

Cause _{8 /ain lo+er motor stops &uring truck stops ;30sec=}

Action _{8 C%ange t%e control program 'or main lo+er 'an so t%at t%e 'an}

keeps rotating &uring loa&ing an& &umping ;10min=

A'ter mo&iDcation actual +orking &ata s%o+s ma motor temp is aroun& 110 &eg6C ;$ig% temp limit 150&eg6C=

3 &a*s &ata a'ter impro)ement

(a= (otor tem3 a33ro= 11/ deg

Air inlet tem3 a33ro= ,/ deg

(66)

Original

H&A S+ _{Impo!eme"t (7) #"al #!e %ool#"- a&#l#ty}

Oil coolers *or *inal dri$es were changed to increase cooling a-ility

• SiCe o* cooler D . times a33ro=

• (aterial o* cooler D Steel Aluminum • &ooling a-ility D (ore than 1/ ℃ increased

(67)

Cause : Small metal particles stuck on c%eck )al)e 'or *pass line Action : A&&e& oil Dlter in s*stem an& t%en ne)er %appen again

H&A S+

check valve Oil flter

(68)

H&A S+ _{e.oma"%e %ompa#so" (e.ee"%e ata)}

:erformance stud# =as done during actual operation =it! e%actl# same !aul road as competitorKs truc; 6same class7 .

According to t!e data of 1) c#cles, t!e fuel consumption =as +L "etter and t!e time from loading area to dumping area =as - L s!orter t!an

competitorKs truc;.

(69)

Test and im3ro$ement Summary

:erformance test and operational test =as successfull# completed.

T!e results of performance tests all meets CMKs specifications.

EperatorKs comments for performance is ver# good.

MaGor pro"lem t!at occurred during operational test =as final drive "earing failures and alread# completed improvement.

Some ot!er pro"lems =ere found out during operational test and most of t!em are "eing improved during modification period 6Mar 9 April))I7.

H&A S+