Rendimiento de Bulldozer

7/29/2019 Rendimiento de Bulldozer

1/21

CLCULO DEL llENDIMIENTO DEL BULL",D,OZER---- --- - ... -.-.- --El clculo del rendimiento de un BullDozer se puede estimar a partir de las Curvas deProduccin que se muestran a continuacin y la aplicacin de los factores de correccincorrespondientes. Usando para ello la siguiente frmula:

Produccin= (LCY/hr) = Mxima Produccin x Factores de correccin(Lm3/h)

LCY= Yardas Cbicas de ProduccinLm3= Metros Cbicos de Produccin

Las curvas de Produccin del Bull-Dozer nos dan el Valor Mximo de la Produccin SinCorregir utilizando cuchillas Rectas y Universales y adems consideranto las siguientescondiciones:

La Eficiencia se considera al 100 % (60 minutos por hora de trabajo) Mquinas con velocidad de respuesta de la transmisin de .05 de minuto Longitud Mxima de acarreo del corte = 15 m., despus apilar. Densidad del Suelo= 2300 lb/LCY (1370 kg/Lm3), 3000 lb/BCY (1790 kg/Bm3) Humedad del Material= 30% ( factor de carga= 0.769 )


2/21

CLCULO DEL RENDIMIENTO DEL BULL~DOZERProblema de Ej1emplo:Determinar el volmen de produccin por hora de un D8/8S, (con cilindro de volteo)realizando trabajos de explotacin de arciHa altamente empaquetada, considerando el acarreodel material a una distancia de 50 pies ( 45 m ) con un nivel cuesta abajo del 15%, utilizandola tcnica de garra (pendiente).El peso del material es de 2650 lb/LeY (1600 kg/m3). Las habilidades del operador sonpromedio. El tiempo efectivo de trabajo se estima en 50 minlhr.SOLUCIN.-Se calcula la mxima produccin sin corregir utilizando las grficas de produccin yconsiderando el tipo de mquina, su hoja y la distancia de tiro.Por lo anterior de la curva 8S y 1[50 pies se obtiene que la:Mxima Produccin no corregida es de: -550 LCY/hr (420 Lm3/h).

A continuacin se obtienen de la tabla de condiciones de trabajo los factores de correccin:Condiciones l8'actorArcilla dura, altamente empaquetada 0. -0.80Correccin por nivel (de la grfica) m -1.19


3/21

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4/21

BANK1960

3300 2970000 .67400 1000200 .75100 2260800 ,55750 2200700 .7450 860450 .00800 2020400 .82500 1840100 .81800 2080500 .80400 1660800 .85$00 1840100 .85000 1600100 .74650 .74001100 500-800UroO..500 .93600 1280150 .74400 .74300 2700700 .70900 2280650 .756&.) 1960300 .80550 1900200 .80700 2020400 .79100 1.540600 .81800 .2730600 .61250 2170650 .89550 1600850 .69650 1000200 .89400 2260800 .89050 3170350 .57700 2790100 .57000-5400 2130-2900700-6400 .8500tl 2640400 .598002700

47QO 3260500 .85350 3030100 .852400 1800100 .89850 1900200100 2000500700 2020400 .791720 2900 1930250 .89400 2230750 .91550 2520250 .50100 1550600 .75950 2940950 ,6020520 660'16002700 2670500.60 36004200 23602700200.610058 1600 137030070 2950 25104001:\'7

Wet .. ,. " ' , .Sand &. ejav -- Loose ,., , .. , .Sand &.

Coal - i\nthracHe, Raw .Washed , .Asl1, Situmlnou$ Coal , .Situminous, Raw ... , , ...Washed , , ....Daeomposed roek--75"'(,ock, 25% Earth , .50':10Rock, 50% Earth25% Rack, 75% Earlh , , , .-- Dry pa1ckEld .,." .. , o , , excavated ' .. ".,Loam "" , .Granlte -- Broken , .. , , .Gra'i 'el - Pitn,m , , ..Dry ,., , , ... , .....Dry mmWet6-50 mm~~,Brokan ., , .CrushedHemat!ta, ron ore,Lirnestone - Broken '

Crushed ",. " . ' ..ron ore , ,.' .ron ore , .Sand -- Drv. loose ' .

Sandsona , , , , ., ., .Sha:i'e , ...

-- brokan , .. , , .Snow--

WEIGHT* MATERiALS~~ __ '''_~~,~,_.,_" .... ",_"".,.~.~". .__ ,__ . >_.~n_""_'"Basalt . < < < < < , < ,. , Bauxite, Kao!1n o ." , , o Callene ..... < < < Carnotite, uranium ore , .Cinders, .. o' o o , O " o , -.- Natural bed '"Dry ... o"," o' o o Wet o oo, o,


5/21

BuUdozers Blade Se

Fa)r

PRODUCTIONPECIAL APPLlCA TIONBalderson Baldersoniaht MatL

Romelaco Bowldozer "BladaG Bid.V" BId.PRODUCTlON DOZINGght Stockplle

GE EG G FG EGGEI

G GE GE1E E E

GSite Preparation I

G GG GG GG GII !F FTerracing & Drainage 1EIG EI 1IG

I IF G GIE E ENG Pan:time Push wlpush plate I

GII IEI I FEBrush Removal1

EIFIG I 1F1 IE 1 EF IFIE E F FI

AbUUy ~owo.kE "" ExceHen! G "'" Good

34


6/21

Buildozers SummaryBuHdozers for Caterpillar~Built Machnes

s - Slraigh!U - UniversalA - Anglinge -' Cusl1ionFS - Fill SpreadingPAT .- Power Angla TiIlLMU ._-Ligl1! Material UniversalLMB - Ligh! Malerial BowldozerHMB - Heavy Material BowldozerSLFU - Sanitary LandfH UniversalNote: Balderson blades used in coai ,landfil1, Feclamation and woodchlpapplications.

T

I

BALDERSON BLADESLMB '1 HMB

el!l

I

!.

058 LGP060

MODEL-T"

DSB

825C826C

oso LBP -~-~-- -'D7G _.---- -.D7G LGP D8K

_. - ---,.. ... __ oD9L 1010 8148 815l':l8168824C ---.--.-.

103B J._~3B-~~mT~~;-._--_.~' ~4E .- 1 ---- ---..D4E LGP ,


7/21

uUdozer-- Manufac

p

"Balderson 1\tlateriaiU Bladc" ls desi~S'n'8dfol'coal reclauia-tion work. It _voluule lllovement ononcohesive rnaterials.

"1[;" .... '1'hz, C13shion blade18 used on the D9 and 1)1Ofor on-l:hf'

Blade 1

blades are designed to increase productionwhile pe1'forrning certain tasks. Howe'ver, specialization mayreduce the blade versatility. FoUowing are the mostapplication blades.

35

al1(~"lrv;,.1Z'fJT't.(} ,~}):~}c~!"l)J\(:? irn!)8(:tot ablock. When not the dozer canfol' cut ,naintenance and othel' dozingnarrow width of the "e" dozer increasesmachir,pin c(~mge cuts and redu(:es thetires associated with "S" &- "U"

"A" ..,.. 01' bladecan be01' 25 toeitheI' side. It is,foI' side-casting,roads, backfiUing,ditches and ot-her similar tasks. 1t ean reduceamount of maneuvering required to do these johs, Its"e" frame can be used for attachnlents such asing, land clearing, 01' snow removal tools.

"8",-- The blade18 ' t 'le rnst. ilersti.t.lle bul1Kdozer available. ltR rnodified"lJ'

DOZING TOOLSothe1" blade rnanufacturers .rOl' srlecific appHcations

DOZiNG TOOLS

makes it a good productionit lS smaBer than the "'lJ"r to maneuver and can handle a widerals. It has a HP/foot o"U" blade; oqu,nt:1y the "8"in penetrating ob,taininJg a bladee1"(standard on D?, D8, D9 and DIO)the and o thisblade can handlewith a push it 18scrapers.

"U"--Universal blade---thelarge wings on this blademake it efficient foI' moving big loads over long dstances as in landstockpile work,and trapping for loadera, As this blade has(or kW/meter) o cutting edge than anshould not b(; a prime objective. \Vith{oI'kW/I,m3) than an "8", thisblade lS'ghteI' or relatively easily dozed materiaLwith tUt cylinders st~1n,dardon D7, D8, D9it has some of the versatility of the "8"irnproves its to ditch,extends its use to many utlitv


8/21

11f

UIO

8utldozef$

1..20NOTE:{-}Favorable1,4(} (+ 'Desfavorable

+300.40

20

FACTORES DE PRODUCCiN

% Nivel Vs. Factor de Corte% Nivel

Vf-

1.200.75

\[email protected],0:00

TRACTORSOBRENEUMTICOS

0.100

1.000.75O.ll

O.504).ns0.5Q.O.750.901.201.30

TRACTORSOBREORUGA

FACTORES DE CORRECCiN POR CONDICIONES DEL TRABAJO

OPERADOREXElENTEPROMEDIOREGULAR

TIPODE MATERIALMaterial Suelto ApiladoDifiCil de Cortar; CongeladoCon Cilindro de VolteoSin Cilindro de VolteoHoja operada con CableDicfici de Impulsar;"Muerto" (Seco,

mateal no-cohesivo) materialmuy pegajosoRoca, Aflojado con Ripper VoladuraCorte en TajoCorte ladao a LadoVISIBILIDADPolvo, LI,;via, Nieve,Neblina obscuridadTIEMPO EFECTIVO50 mln/hr40 mln/hr

OPERACiN CON TRANSMISiN DiRECTAmln. TIEMPO DE CAMBIO)CUCHILLA-q~


9/21

ProductionU & S Blades

ESTIMATEO OOZING PROOUCTION Universal and Straight Blades 07 through 010lm3f hr lCY/ hr2200

Bulldozers 11:~~F-F.L I .-l--~T _'--- --- L9r~S- _____ '_+_--'==:=j - -----=EL-1 I9S \ \ - - ~_'

-+-- - -' -+------< --11\ 1 -' -~

~ r--+- 1----+- I 1 --> ~- -

~~BUh c--~-=t= - t-~ C-----1--+---r, ~ ~- ~t==\ '~ ----+---i '----

_ BS \1 "I~ - ----l----I---1 --+---7U"- \ -'" \~ t=c- - i-F 1--~\ '\ ,'-- e-7S~"- ' J': ~;;;:: 1_ +- ' ~_ ,,~L~ ~ -------' ='=- -" "r-. " ........" ""'- -.......:. T - - IT ~~ ~ ~ '--- - T -- 1~ ~_ 1f-- ~b.. "'- _, - t-:.:: ~::==- - =-_ s::::::: =~ - ~--t- - -- -- - -..-::::: '--_ -.::::t===:: _ -.... '-' - ~ IOUL--1 I ~---t-= _=~r=_ ~ lOS~ BU 9U___ aS-=17U -185-- = 9SI 1_ l===t=j

2800

2600400200J60t O

2001400 18001200 .

1600

14001000 1200800

1000600

800

600400 400200,

2000-

O

100 200 300 400 500 600

NOTE:This chart isbased on numerousfield sludies madeunder varying jobcondilions. Refer locorreclion faclorsfollowing Ihesecharts.

FEET

I I I I I I 1 I I I I I I IO 15 30 45 60 75 90 105 120 135 150 165 UIO 195 METERS


10/21

RendimientoHojas Tipo U , S

Rendimiento estimado Hojas Universales y Rectas -Modelos del 07 al D10Lm3fhr

800600

Nota. Esta iablesta basada ~nnu'm,erosa,gpruebas decampo- condiferentes tipomateriales )fcondiciones dEtrabajo. Senecesita aplicalos fa


11/21

Job Factors Estimating Production Example Problem Bulldozers 1

*Note: Angl ing blades and cushion blades are not cOilsidered productiondozing tools. Depending on job conditions, the A-blade &1d C-blade wil l average 50-75% 01 straight blade production.

JOB CONDITlON CORRECTION FACTORSTRACK WHEELTYPE TYPETRACTOR TRACTOR

ESTIMATING DOZER PRODUCTIONOFFTHEJOB

."lOn~0.80

0.60

1.20

1.00

+10 +20 +300.40% Grade

O

% Grade VS. Dozing Factor

NOTE:(- ) Favorable

1.40 (+) Unlavorable

Example problem:Determine average hourly production of a D8/8S (withtilt cylinder) moving hard-packed c1ay an average distance of 150 feet (45 m) down a 15% grade, using a slotdozing technique.Estimated material weight is 2650 lb/LCY (1600 kg/

Lm3). Operator is average. Job efficiency is estimatedat 50 min/hr.Uncorrected Maximum Production - 550 LCY/hr(420 Lm3/h) (from bulldozer curves)Applicable Correction Factors:Hard-packed c1ayis "hard to cut" material .. -0.80Grade correction (from graph) -1.19Slot dozing -1.20Average operator -0.75

-30 -20 -10

1.000.600.501.20

0.75

1.201.30

0.840.67

0.80

0.70

0.5OcO.75

1.201.15-1.25

0.800.700.60

1.20

1'.000.750.60

0.80

0.840.67

0.80

0.800.60-0.801.20

1.15-1.25

0.50-0.750.50-0.750.901.201.30

OPERATOR ExceUentAveragePoor

MATERIAL Loose stockpileHard to cut; frozen wjth t il t cyHnderwithout tilt cyl1i1ndercable controUed blade

Hard to drift; "dead" (dry,non-cohesj've material) orvery sticky material

Rock, ripped or blastedSLOT DOZINGSIDE BY SIDE DOZINGVISIBILlTY -

lDust, rajn, snow, fog or darknessJOB EFFICIENCY -50 min/hr40 min/hr

DIRECT DRIVE TRANSMISSION(0.1 mino fixed time)BULLDOZERAngHng (A) bladeCushioned (C) blade1D5narrow gaugeLight material Ucblade (coal)Blade bowl (stockpilles)

GRADES - See following graph.


12/21

Bulldozers Measuring Production

T ~IDE VIEWLw w~GROUSER MARKf -

TOPVIEWroduction = Maximum Production x CorrectionFactors= (550 LCY/hr) (0.80) (1.19) (1.20)(0.75) (0.84) (0.87)= 344 LCY/hrTo obtain production in metric units, the same procedure is used substituting maximum uncorrected production in Lm3= 420 Lm3/h x Factors= 263 Lm3/h

ONTHEJOB MEASUREMENTThree generally accepted methods of measuring bulldozer production are listed below. The third method isempirical, but is the simplest to conducto1. Employing Surveying Techniquesa. Conduct time study and then cross-section the cutto determine the volume of cut material moved.

(Production in BCY or Bm3 per unit of time)b. Conduct time study and then cross-section thefill to determine the volume of fill material. (Production in LCY or Lm3 per unit of time)2. Weighing Blade LoadsConducttime study and weight material movedby bulldozer by weighing the loader bucket loads.3. Measuring Blade Loadsa. Dozer operation(1) Pick up and carry load onto a level area andstop.(2) Raise the blade directly over the pile pullingforward slightly as blade comes up, leaving anearly symmetrical pile.(3) Reverse to clear the pile.b. Measurements

(2) The average width (W) of the pile in feet .Hold the tape horizontally overthe pile andsight at the inside edge of each grouser markand the corresponding opposite side of the pile.(3) The greatest length (L) of the pile in feet.Hold the tape horizontally over the pile andsight at each end of the pile.c. With the above measurements, now compute theblade loado

(1) Average the height measurement (H)(2) Average the width measurement (W)(3) Load (LCY or Lm3) = 0.0138 x (HWL)(4) Load (BCY or Bm3) = LCY or Lm3 x LFd. Combine the calculated blade load with timestudy to figure production.


13/21

1

:11M#hr

PRODUCCiN CONCHUCHILLAS RECTAS"S"

Rendimiento Estimado Hojas Rectas 03. 04, OS. De. 814, 824

PIESL.a -l-_..l.--L_...L_--L_-L -L3D 45 66 75 90' 105 1 ..L35 1 __--1150' 165 1 METROSDISTANCIA PROMEDIO DE ACARREO DEL MATERIALN t ~~sta s;lrtlca esta l''';';tsadaen numerosas pru-ebas de campo con diferentes tipos de mater~a!es 'Ycondicrones de trabajo Localizar kJsFactores de Corre-ccinen Las sigui-entes labrasO a, ~ El 38 Represema larnben e l D3B LGP


14/21


15/21

CATERPILLAR

, .78, .. 80

featul'es indude Catodiese} Engineeonstant meshand four reverse,system, and triple ..box~sectionreinforced drawbar, circle and blade.

OTOR GRADERS

Series G Motor Graders: Articulated frame, sharp tUl'ning front wheels anooptional drive trillo differential (standard onand 160) provide excellent maneuverability andshort turning radius.e Low profile ROPS cah combines convenient controlplacement with the comfort oi sitdown operationand Electrornc Monitoring System EMS). .Hydraulic controla provide fast, constant-speed bladepositioning, regardless of engine RPM, for excel1entblading accuracy . Single-Ievei" dred drive power smft transmissionswere designed specificaHy for motor' gradersout torque converter 1ags or surges. Inching pedalfor dose work,

High-torque-rise Cat diesel Engines provide exceHentluggability.1) Fourwheeloil b:r.akessupply positiveperformance, .. adjustment-free .. , completely.. , controHed by dua] circuit air system for extraprotection.ti Qui.et operatioil .. ,mounted engine fan ... retn'mounted tr:ansn:llSrubber-mounted hydraulicthese options: ROPS cabCanada), engine compartment doorslevel muffler.

77


16/21

Motor Graders Ground Speeds@ edengine RPMGEAR 4THTHTHTH km/hPHm/hPHmfhPH 4.2 35.42.0 7.2 4.5 6.74.4 15.2 !7.63.4 7,7 10AForward & Ravarse 3.9.4.2 3.9.8 8.1162 10.15.9 16 ..10.9 25.4Forward & Reverse 3.7.3

1

6.0 3.71

9.5 5.95.6 9.7 I5.05.5 9.44.5 l.'7.3.0.7.5.95.6 9.7 I5.05.59.4 24.5Forward & Reverse ! 3.9.4

I6.2 3.9.8.16.20.16.06.2LO5.5 3.9.4.3.3.2.50.5.55,8.82.213.8I 30.18.7 1 43.527'.0.3.7.2.9A.22.2.618,41.45,86.04.91.7 50.6'1.4 18.6 43.3 3.9.45.3 3.3.2.50.5.55.8.a2.13.729.9 25 ..9

80


17/21

If s Motor Graders

11I

16,,5"31U

11'6"10'i"3219#

7!7lfll

22'10"'10'2ff10'2#16'0"

10'!"I".125

618.025 (12 PR) {E2}3.52 m3.07 m9.96 m6.96 m3.10 m3.10 m

2.31 m3,33 m473 L

4.88 m790 mm419 mm

11'0"9'5"30'3"21'2"9'5"9'4"14'0"27"16.5"6' 11"10' 1"100

10.5 L

616.024 (12 PR) (G2)3.43 m2.87 (TI9,22 m6.45 m2.87 m2.84 m

2.Wm3JJ7 m380 l

427 m590 mm419mm

30"/0S/843.4 km/h '2.7.0mph50.6 km{h 31.4 mph7.9 m 26'0"2712 165.5

16G134 kW 180 HP 186 kW 250 HP18440 kg 40,650 lb 24520 kg 54,060 lb3306 34062000 20006 6635i03 14.6l 89330%

8/S43.6 kmth 27.1 mph43.6 km/h 27,1 mph8.2 ni 2.7 'Off3697 225,$

10'3"8'10"27'3"19'5"8'5"8'0"12'0"24"18.25"El' 5"'"9'6" .75

150 HP29,850 lb

63Sil"l3

25.5 mph25.5 mph24'{I"11tH6PR) (G.;2)

1.96 m2.90 m284 L

14.0;243.12 m2.69 m8.30 m5.92 m2.57 m2.44 m3.66 m610 rnm464 rnm

6

112 kW13540

10.5 L29"/06/641.0 km/h41.0km/h7.3 m1912

(G-2)9'11"8'10"21'3"19'5"8'5"7' 11"

6'1.5"9'2.5"75

12'0"24"11.25"1.87 m2.81 m284 L.

613.024 (lO3.02 m2.69 rn830 m5.92 m2.57 m2.40 m3.66 in610 mm440 mm

10.5 L 638

12G,~,>,~--~---,,~--~...,101 kW 135 HP13 400 kg 29,525 lb33062200

El

31"/"6f639.4 km/h 24.5 mph39.4 km/h 24.5 mph7.3 m 24'0"1912 116.7

en pre-v ious paga aJso app~y nera,

HeightAbove Groundax. Shoulder Reach:.FrameCrab PositionRefil!

ax. slloulder re2ch on 140Gls to lel t. AII others are to lhe r lght.shoulder reach on18G 18 obtainat) le In both dlre,;t iorm.

MOOEl---",,",,~~ Power

Max. Torque RisaNo. Speeds Forward/ReverseTop Speed ForwardRevarseMnimum Tuming Radius' *Front Frame Vertical SectioflModulus - centfmeters cubedcubed)Circie Support Shoes- F ronl & RearDIMENSIONS:top of


18/21

30"lB'5'

245

340621006

242 kW616421


19/21

Graders

7 i , 4'P12'0"24"


20/21

Strack motors, ..

ULI

undercarriageSealedlong

daHy service requirements.

driveto counterrotate

adjusters215

!II Variable flow ".pumps .. , hydraulic proportioning canpower to 41 single function ... Cat high-pressurehose and reusable couplings ... high speedhoist ... auxliary hydraulics aHow use arange of frout-end Humau-engineered operator stationlically boosted joystick levers ... four-wayseat ... tiuted skylight " side and rear

!II PO,\;l,ler supplied by Caterpillar ...systems for

iII>

lit

R HYOR

93

.8384-8586-87

88,89.. 90

.99100101-"107, .110811111213'11311411517

ERPIL

pipesetting" " ' , , ... , , .... 11

'l,veights


21/21

83

J

- BackhoesnenSlons

F .--G*

__ ~,~ , m H

E

B

215 .'22535450'0".17 mO'!)".40 rn1'2",60 m1'10"'0".05 m0'0",60 m1' 10".70 rn1 P) (",.,.- '" 7'11.5".99 rn' 10".45 m1 '4".70 m:2';2"8"75 mm14.8"30 mm1"62 rnm0"7",04 m1 "12rn4';.06 m2".8'1 m; 3".,30 rn0' 10"3,81 m2'6",42 rn4'6".02 rn6'8".61 mSSN.83 m2'3"1.43 m7' i"3.18 m3'3'.28 rtl0 50,.40 m1' 2".60 m'1' 10"-,- e

l.

Documents

Rendimiento de Bulldozer