Shop manual máy đào KOBELCO SK210 - P47

tập đoàn sản xuất máy xây dựng Kobelco đã giới thiệu mẫu xe đào – SK210. Với loại xe đào mới này, lực đào, hiệu suất máy, điều kiện làm việc cho người điều khiển cũng như độ tin cậy của m

23-4 PRECAUT10NSTO BE EXERCISEDON BREAKERSOF DIFFERENTMANUFACTURERS

Therearesome differences between

manufac-turers as to the plplng tO breakers and the

handli皿gOfbreakers.Forthisreason,COnSult

With the mant止acturer when mounting a

●

breakerin the field.The followlnglS a

Sum-maryofhowbreakersshouldbehandledthat

isextractedfrommanu-facturers'cataloguse

andoperationmanuals

NOTE

Thisis a generaIoutline of how breakers

Shouldbeusedandmaydifferwith excavator

models.AIwayscontacttheb｢eake｢manufac-●llr凸r h凸flヽr凸f;凸lJ

m′ヽllnl;nn

(1)Placinghighandlowpressureaccumulators

K R U P P

O K A D A

FURUK瓜VA

Theymustbeplacedbasically

(dependinguponmodels).

Check the oscillation of the

pulsationofthebreakerpres-Sureandiflpulsationislarge, alwaysinstallaccumu-1ators

Standardofjudgmentontheinstallationofac-cumulators

Highpressure:Measurethepulseoscillation

Side

bypressureonthehighpres-sure side of the breaker at

theinspection port for the

pumps I delivery pressure by actuating the breaker at the fullrevolutionoftheenglnein

modeHandset themaximum pressuredifference to within

sys-tempressure350kgfノcm2 (4,980psi).

Incaseitexceeds20%,install

ahighpressureaccumulator

NOTE:

Thepulseosc‖ationis350×20%=70kgf/cm2

leveI′an aCCumuIatormust beinstalled

A

tnstal=heaccumuはtorbyreferringtore-S山tofveriてicationtest■才maX

mln

Lowpressure side

Measuretheinlet pressureof theline filter on the breaker Sidebyactuating thebreaker atfullenglnereVOlutioninthe

●

Hmode,andincasethemaxi-mumpressureexceeds

55kgf/cm2(780psi),installa

lowpressureaccumulator

max.<55k9f/cm2(乃Opsi)

Regarding the capacity and the chargepressure of accu-mulators,COntaCtthebreaker m只nllf只ntllγPγhpfnTへPinq十只11只_

tion

(2)1nstallationofareliefva山e

K R U P P

O K A D A

FURUモび凧仏

Installationis not necessary.

manu-facturerasitisnecessary

dependinguponmodels.)

Installationisnecessary

A relief valveis specified by each breaker manufacturer Sincethemethod of pressure Sett血gofthereliefvalve dif-fers with breaker manufac-turers,installa relief valve according to the manufac-turer'sinstructions

NOTE:

OnIytheBseriesTOKUmachinerequlreSare- ■

tiefvalveto beinstalled

も

■l 血

や

PLUG

駕

ト

ミ､

魁

/

＼ヽ/

ヽ

＼Jl

＼ヽ

＼ 叉

>､′

BOOM

Max.press-Min.press<systempressx20%

や

&

ン心

NIBBLER&

BREAKER HlnH

lllヽJ Il

l■l

′

R 可

≠

PRESS〕RE SIDE

∴主モこ

′

Reliefvalvemounting

NIBBLER& BREAKER LOW PRESSURE

SIDE(RET〕RN)

3/4

5

-■●･-4

2

＼＼缶

PT3/4

-■-■一

(PFl)

TO BREAKER

P

PF3/4

慧

PF3/4 3

ーt二OTANK

RETURN SIDE

1

巨

3/4 PF3/4

OIL SUPPLY SIDE

1.川GH PRESSURE HOSE 4.PLUG

(3)Restrictionofenginerevolution

N P K-Fullenginerevolutionmaybe

used

E R U P P

O K A D A

FURUK瓜VA

Therearerestrictiononthe englnereVOlution.Sincea SpeCifiedrevolutiondiffers withbreakers,followthe breakermanufacturer's instructions

NOTE

■

ln thecaseofa breakerforwhich theenglne

revolutionislimited′the breaker does

notin-

CreaSeimpactpowerandcyclesevenatfullen-gmerevolution

■

Since extra hydraulic oit returns to the

hy-

drauticoilviathereliefvalve′itcausesthehy-draulic oiltemperature to rise and the fuel

COnSumPtion toincrease.Plaster the tabel

(furnished bythebreakermaker)indicating

tothethrottIepotentiometerposition.AIways

observetheindicated revoIution

笹

THROTTLE

POTENT10METER

(CONTROL)

内凹四国

ゝ

鞄

ノカ

/L

働

札八川酬

｡0嗣…岨 胤馴働

ク′

=

じ/

粁

(4)Changingoverthebreakertohighandlow

SPeeds

TAISEI FURUKAⅣA

These breakers are not so constructedas to be switched OVertOhighandlowspeed

K R U P P-Breakers onandafter

MKB1200areconstructed Withaswitchingfunction.It Can be operated frominside thecabbytheinstallation of asolenoidvalve.Forpiping

WOrk,COnSultwiththe breakermanufacturer

NOTE PiplngWOrkisnotrequlredinsomecasesifa

hi9h-lowchangeoverfunctionisnotnecessary

atuser′s request

On that occasion′itis necessary to fix the Changeove｢valve containedin the breakerto thelow speed side beforehand.ConsuIt with the breaker manufacturerin that case.ttis PrOhibited to use the high-low speed change OVerValvewithoutlaymg high-low speed

tng and without fixlng the high-Iow speed Chan9eOVerValve

川GH-LOW SPEED CHANGEOVER VALVE

RELIEF VALVE

TO CONTROL VALVE

｢l-1-1 lヽ

1

-｢l

lHYDRAULIC IBREAKER l

L

〉

TO TANK

CHECK VALVE

●FLUSHtNG METHOD

Aftercompletionofplplng･wOrk,COnneCtthe

highpressuresideandthelowpressureside,

asshowninFig.60,Openthestopvalveson

bothsides anddepress the operatingpedal

toperformflushing

●Beforebeglnnlngflushing,runtheenglne

atlowspeed,depressthebreakeroperat-1ngpedalandthenruntheenglneathigh

●

Speed

●Performflushingoperationforatleast40

minutes,anddurlngtheoperation,make

njllDQレQげ凸 fT､nm POnh nア ナhp

Ju⊥ヽノ し′⊥ 1▲ヽノ し′⊥⊥

⊥し′Lん▲ゝししら) ⊥⊥し′▲▲▲ ヽノLん)▲⊥ ヽノ⊥ V▲▲､ノ

COnneCtionsofthenewlyattachedbreaker

circuit and thenibbler&breakercircuits.

RETURN FILTER

Contaminationanddeteriorationofhydrau-hc oilmay develop malfunctionlng Of the

COntrOlvalve,earlywearandseizureofthe

hydraulicpumpsandmalfunctionlngOfthe

entire hydraulic circuits:always replace

hydraulicoilatregularintervals,basedon

table47

(ON)(OFF)

①l暮⇔

HOSE

CONNECTOR

(PF3/4)

STOP VALVE

//

い

ヽ

▲J

Anexampleofflush血gtime(23min.)血a

Slngleprocess

5min Flushing

1min

-匝司-5min F】ushing

1min

一転

5min Flushing

1min

一回-5min Flushing

Fig.60 F山shingmethod

Table47

maintenancepoints

Replacementintervats Firstreplacement 2ndreplacement Regularreplacement

■■l■■■■■-Every600h

Returnfilter Hydra山icoiltank

SK200(LC)Ⅵ SK210(LC)Ⅵ 50h

SK230(LC)Ⅵ SK250(LC)Ⅵ SK250NLCⅥ

50h SK320(LC)Ⅵ

SK330(LC)Ⅵ SK330NLCⅥ

50h

●OPERATING PROCEDURE

●

Thismachineisprovidedwithbreakerslngle

circuit and nibbler and breaker combined

(conflux)circuit.Tousebreakerornibbler,

Selectcircuitappropriatetothespecification

through switch on thelert rear side or

driver's seat.

●SW汀CH OPERATING(NIBBLER&

BREAKER SPEC作ICATION)

Specification Switchposition Circuit

■

Breaker

1

0FF

一

Sin9iefiow 一

switch on(conflux)to operate

breake｢.1tmaycausetroubleofmachine

ン:＼

一/1一夕

品

@

￠

§罠

く噂

義宗プ

○

ラ

＼

ミ琶

夢

＼

§で

/

鬱きjっ

〃

拶

ノ

NIBBLER & BREAKER SPECI円CAT10N

●THROTTLE POTENTtOMETER

Whenoperatingthemachinewithahydrau-1icbreaker,dothefollowlngOperations:

●

Use the throttle potentiometer on the high

idle side

(1)Hydraulicbreakersinglecircuit

Releasepedallockontherightfrontside

ofdriver'sseattooperatepedal

†

●

Precautionforpedaloperation

Theoperationvariesinthespecifications′SO

beforeoperation′readtheOperatorManuaI

CarefuIly

Footpedal

depressIngSeCtion

Depresstoesection Breakerstartsoperation

Pedalinneutralposition Breakerstopsoperation

(2)Nibblerandbreal(erCOmbined(conflux)

circuit

Releasepedallockontheright rrontside

ofdriver'sseattooperatepedal

●HydrauIicbreaker

Footpedat

depresslngSeCtion● Ope｢atin9COndition

PedalinneutraIposition Breake｢stopsoperation

Depressheetsection Breakerstartsoperation

●Nibbler

Footpedal

depresslngSeCtion● Operatingcondition

Depresstoesection Nibblerctose

Depressheelsection Nibbleropen

発昏 THROTTLE POTENT10METER

(CONTROL)

⊃

○

■0

こふ

鞄

口飴対‥‥‥

ノ

0

′

)

りノ

担:

払

田口ロ0

Throtttepotentiometerposition

＼

J 0

覧姦

戯

Q

一9

1111-11 勾

＼

＼ミ

§壷

噂

===′二

≡≧参

＼

｢丈

べ C

つ(甘＼ミ

PUSH LOCK ROD FORWARD

TO RELEASE

(ク

(U トいヘ卜しqU7.

ノ

:っク

m ヾ･

馳 きb､

＼/

＼ノd

ヽこミ

＼

彪

′メ

lモ

外＼

鑑伊PULLLOCK

ROD BACKWARD

TO LOCK PEDAL

Ope｢atepedatofBreakeronIy