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
Trang 1SK210(LC)Ⅶ
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Note)Abbreviationsinthismanual
AVR:Armvariablerecirculation R:Reverse
Trang 2$K200(LC)Ⅶ SK210(LC)Ⅶ
Eb:)m くゎ85/(♪125><1240
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AVR:Arm variabIe recircuIation R:Reverse
Trang 4Eシ⊂X⊃M q>85/￠125>く1240
ち BUCKET くbl15><1080
1 AL F
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I 1 1 1 1
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PRESSURE SENSOR SPECIFICAT10N
NOTE:
Don′tconfluxtheTlineof⑯with T
lineof⑩and⑪.butifitisrequired′
it must be connected at near of the tank
ltem ecification SE∼10′28 SE22′23 SE26′27
Trang 5SK250NLCⅦ
●HydrauIicdiagram
EU Boom safety
HAIN PUllP
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Trang 6$K250LCⅦ
$K250NLCⅦ
▼_,j
Bl 二｢
3争.●HP
800H CYLINDER(しH)
仁
51
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HYDRAULIC COMPONENT SPECIFICAT10NS
ltem Specification 50 51 Name Holdin9Valve Holdingvalve
Type KHCV20PO KHCV20PO
Workingpressu｢e MPa 39.7 39.7
NOTE:
1.This hydra山iccircuitisusedtoaddtofo‖owlngCi｢cuit ■
YNOIZOOO90Pl-EU STD LQOIZOOO32Pl-EU STD
2.ReturneachdraintngIinesseparatelyfromhotding va山es
l
to Hydraulictank
Trang 7SK250NLCⅦ
●Hyd｢au批diagram
EU Boom&Arm safety
H人IN PU11P
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Trang 8$K250LCⅦ
$K250NLCⅦ
HYDRAULIC COMPONENT SPECIFICAT10NS
ltem Specification 50 51 52 Name Holdingvalve HoIdingvatve HoldingvaIve
Type KHCV20PO KHCV20PO KHCV25PO
Workingp｢essure MPa 39.7 39.7 39.7
Bl
800H CYLIND∈R(L.H) Al
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NOTE:
1.Thishydrauliccircuitisusedtoaddtofollowmgcircuit ■
YNOIZOOO90Pl-EU STD LQOIZOOO32Pl-EU STD 2.ReturneachdrainInglinesseparatelyfromhoはing● valves
to Hydraulictank
3.1fdraininglinesfromholdingvalvesandboomhotding Valveareconfluxed′it must beconnected at nearofthe tank
Trang 9SK210(LC)Ⅶ
● SK250(LC)Ⅶ
SK250NLCⅦ ●SK:ほ0(LC)ⅦSK∝氾NLCⅦ
●HydrauIicdiagramofMaincontroIvalve
24
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13 20
Pl T
M
PLl PTb
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el択2 50 52
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(Pl) (P3)
Code PortName Size
Aa A｢mInpo｢t
PFl
Ab Boomraiseport
Ac Bucketdumpport
AL TraveIleftforwardpo｢t
Ar Travetrightforwardpo｢t
As Swin9leftport
Ba A｢moutport
Bb BoomIowerport
Bc BucketdigglngPO｢t●
BL Travetteftforwa｢dpon
Br Travetrightforwardport
Bs Swingrightport
Dra Drainpo｢t PFl/4
Code PortName Size Drb D｢ainport
PFl/4
Drc Boomlockselectorvalvedrainpo｢t Drd Boomtocksetectorvalved｢ainpo｢t
Pl PIpumpport
PFl P2 P2pumppor■t
P3 P20pt.port(引ankpIug)
PFl/2
Pヰ PlOpt.port(Biankpiug)
PAl Armconf山xpilotport
PF3/8
PAa Arminpilotpon PAb Boomraisepilotport PAc Bucketdumppilotport PAL TraveIIeftforwardpiIotpo｢t PAr Trave=1ghtforwardpilotpon
Trang 10$K200(LC)Ⅶ $K2劫(LC)Ⅶ $K330(LC)Ⅶ
$K210(LC)Ⅶ $K2封(LC)Ⅶ $K謝NLCⅦ
$K2餌NLCⅦ
Code Name
1 Travelstraightspool
2 Travelleftspool
3 Travelrightspool
4 SwlngSPOOl
■
5 BucketspooI
6 BoomconfIuxspool
7 BoomspooI
8 Armspool
9 PIcutspool
10 Armconfluxspool
11 P2cutspool
12 Armvariablerecirculationspool
13 MainreliefvaIve
14 OverloadreIiefvalve(405k)
15 OverIoadretiefvaIve(385k)
16 Boomlockvalve
17 ArmIockvalve
18 Boomlockselectorvalve
19 Armlockselectorvalve
20 Loadcheckvalve
21 PINega-Conretief
22 P2Nega-Conrelief
23 Nega-Conretiefvatve
24 PIVatvebody
25 P2Valvebody
Tightentngtorqueaccordingtoportsize■
Code Name
50 Pl$ideby-PaSSCircuit
51 PIsideParatlelcircuit
52 P2sideby-PaSSCircuit
53 P2sideparatIelcircuit
54 Boomconfluxcircuit
55 Armconfluxcircuit
56 Tankcircuit
57 Draincircuit
58 Travelrightforwardcircuit
59 Travelrightreversecircuit
60 Bucketdiggtngcircuit
1
61 Bucketdumpcircuit
62 Boomraisecircuit
63 Boomlowercircuit
64 Travelleftforwardcircuit
65 Travelleftreversecircuit
66 Swingrightcircuit
67 Swingleftcircuit
68 Armincircuit
69 Armoutcircuit
70 Armrecirculationcircuit
71 PINega-Concircuit
72 P2Nega-Concircuit
73 Nega-Conbackpress.circuit
Size TorqueN･m(kgf･m)
PF3/4 147∼176(15∼18) PFl/2 107.8∼127.4(11∼13)
Code PortName Size
PAs Swingleftpilotport
PF3/8
PBl Boomconf山xpilotport
PBa Armoutpilotpo｢t
PBb BoomIowe｢pitotport
PBc Bucketdi991ngPilotport
●
PBL Travelleftreversepilotport
PBr TFaVe=1帥モFeVeFSePi‡0モPOrモ
PBs Swin9ri9htpilotpon
PCa P2cutpilotport
PCb PIcutpilotport
Pis Armvariablerecirculationpilotport
PLl ATTboostpiIotport
PFl/4
PLcl Boomtockselectorvalvepilotport
Size TorqueN･m(kgf･m) PF3/8 68.6∼78.4(7∼8) PFl/4 34.3∼39.2(3.5∼4)
Code PortName Size PLc2 Armlockselectorvalvepitotport PFl/4
Pnl PINega-Conpr郎.meaSuring(BIankplug)
PF3/8
Pnl′ PINega-Conpilotport Pn2 P2Nega-Conpr郎.meaSuring(BIankplug)
Pn2′ P2Nega-Conpilotport PTb Travelstraightpilotport
T
T2 SwlngmOtOrmake-uP●
PF3/4
T3 Tankport(BlankpIug)
Tnl Nega-Conbackpress.measuring(Blankp山g)
PFl/4
Tn2 Ne9a-Conbackpress.pilotpo｢t
Trang 11SK210(LC)Ⅶ
● SK250(LC)Ⅶ
SK250NLCⅦ ●SK320くLC)ⅦSK330(LC)Ⅶ
SK330NLCⅦ
●Hydrauliccircuitdiagraminoption
Breaker(Option)
｢
M
■■- t■■ ■■■- ■- ■-■■ - ■- ■■ ■■-■ -1■ -■
t
￣｢
l l l l l
t
メインコントロール/くルブ lhincontrotvllvo ■■■■1 P2 Pl , lオ
-■■
-1
油圧ポンプ Hlin p叩
コ 50
53 l￣
作勒油タンク
Hyd.0iltank
T
P
1 l
_ _.+
/くイロット/くルブ PiIot…tVO(for8r●akor)
￣l
SEll
一丁+
52
Plネガコン回抜 くSE28) Pllkgさ1bn GirG
t
＼･▲
l
Ⅰ
l t
l l P蝕
Plバイパス回路 P18rpasscircuit
⊥
l eT2 CP2
CTl
CPl
人
l l
l I
P2バイパス回蕗 P28y-Pさ$S cirGUit
P2パラレル回蕗 P2paratl0l circuit
げ:l
Plパラレル回書 PIparllI0l GirGuit
)
ヽ
山t
⇒,l
ヽ■′
t
ヽ■′
l
(Pヰ)
山2
1l.
t l
1▲T ▲▲:1だ
…｡al;三･;監a l
(P3)
11 レバーロック しモVerloGk
18
Trang 12一
Solenoid･Proportionalvalve
Main controIvalve
Stopvalve
Pilotvalve(Forbreaker)
ReturnfiIter(ForbreakeronIy)
タ
Ta
ンク回蕗
nkcircuit
ll
I l l ll
ll
!;
1I
lt
t;
ll
ll
t l
PCa-ヱ1乙㍍ま
ゝ一一
し
P2ネコン回阜
ilさ芋弘也∩
ClrC山t
ニ1甘圧甜
t占慧)｡.…u,｡
p8｡2lCi｢cuit
tp人02
人02
802
Note:
1CodeNo.500fmaincontroIvaIveand No.530f
retu｢nfilterdi什erfromthestandard ones.
●Main controIvalve
N喝at岳vecontro=･e!iefv創verep王acedand
Add-On Valve added
●Return fiIter
Replacedwithspecialpartforbreaker
2.ForAdd-OnVaIveoverloadreliefvalveinCode
No.500fmaincont｢oIvalve′thepressure
mustbeadjustedaccording to
thespecifica-tion ofbreakerin use.
$K200(LC)Ⅶ $K2劫(LC)Ⅶ $K320(LC)Ⅶ
$K210(LC)Ⅶ $K2!氾(LC)Ⅶ $K謝(LC)Ⅶ
$K2甜NLCⅦ $K330NLCⅦ
Explanation l.PiIot circuit
①ThepilotgearpumpdeliveryoilflowsintoPlport Ofsolenoidproportionalvalve(18).
②Theleverlockactuates,andthedeliveryoilflows intopilotvalve(52)forbreakerandpilotvalvefor
ATTthroughAport
③withtheoperationofpilotvalve(52),thedelivery
OilactsonAdd-OnValvePBOportofmaincontrol
Valve(50)andswitchesthespool.
④Concurrently,thevoltageoutputbylowpressure
SenSOr(SE-11),negativecontroIsensors(SE-26, SE-27)andbackpressuresensor(SE-28)is sent
to mechatro controuer
⑤The command current from mechtr｡C｡ntr｡11er
actsonP2cutproportionalvalve(PSV-B)on SOlenoid.proportionalvalveblock(18)and
SWitchestheP2cutspool
⑥Thecommandcurrentfrommechatro c｡ntr｡11er actsonPlpumpproportionalvalve(PSV-Pl)and
negativecontroIsensor(SE-26)hasthePlpump
deliveryflowratetotheminimumreduced
⑦Thecommandcurrentfrommechatro c｡ntr｡11er
actsonP2pumpproportionalvalve(PSV-P2), andthenegativecontroIsensor(SE-27)andback
pressureミenSOr(SE-28)haveP2pumpdelivery
flowratelnCreaSed
⑧whenboomraiseandbreakeroperationarec?r-riedoutconcurrently,PlpumpactsonboomralSe Operation,makingtheboomraiseoperationpossi-ble
2.Maincircuit
①plpumpdeliveryoilflowsthroughPportofm竺in
COntrOlvalve(50),andrlowsintoP2by-paSSClr- Cuitontheupperstreamofthetravelstraightsec-tion
②p2by-paSSCircuitisclosedbecauseP2cutspoolis
moved･Thereforethedeliveryoilopensloadcheck ValveCP2andrlowsintoP2parallelcircuit
③AndthedeliveryoilopensloadcheckvalveLC｡2
0n the Add-On Valve and flowsinto the breaker SpOOl
④Becausethebreakerspoolismoved,thedelivery
Oilflovstbrougbaroundtbespool,andis r凸+in十∩
⊥＼_′u ⊥▲▲しし′
the breaker through Bo2port or main control
Valve(50)andstopvalve(51).
⑤Thereturnoilrromthebreakerreturnsint｡re_
turnfilter(53)useddirectl)randspeciauyforthe
thebreakerofhydraulictankthroughstopvalve
(51).
Trang 13SK250NLCⅦ
●Hydraulicdiagram
EU･KAIBreaker(Option)
i
,
l
l
l
l
ぎ,
ll
i
l
ぎ
P2
!J., ＋
i
ぎF
l
l
一書 葺pT･
l
】
土
l
】
J l
l
l +
_ +
套
52
8Elt P
▲
♂￣+
壬･北トムT
ー
ーー +
′￣ヽ
｢ ｢
＼
P001 PCl
P▲○
∧01
ユー.THP■
00t
しEY【穴
･t･-･い｢-▲【
TLOC†且｢早
】
l
l
Pl
迎
(P3)
｢ 1 -
Trang 14SK210LCⅦ $K250LCⅦ
$K250NLCⅦ
画
が
-■■･･-■l
t■llllllllllllllllll■■
暮
l l
壬
l 1
i
l l
l
l l
!
l l
l
l
{
｢ ｢
/ ノ
50
8R▲KER
NOTE:
1.ThishydrauliccircuitisusedtoaddtofollowlngCircuit･
■
YNOIZOOO90Pl-EU STD LQOIZOOO32Pl-EU STD 2.MatchthespecificationofoverloadreliefvalveonOPT･
●
POrtWithcustomer′s｢equlrement･
Normalsetpressure 24.5MPa(250kgf/cm2)
3.Changethereturnfitterforbreaker･
HYDRAULIC COMPONENT SPECIFICAT10NS
ltem Specification 50 51 52
巾ame Stopvalve
l
Pilotvalve
(Breaker) Returnfilter
t
Type 07638-00000 Y-487000
Workingpressure MPa 4.9
Trang 15｢
l ￣1
メインコントロール/くルブ 旭aincontro暮vatve p2 Pl T T2
l
‡
】
竿竺竺+
l
油圧ポンプ
Hain pu叩
54
53＼⊥
P
作動油タンク
Hyd.oiltank
5
ニプラ&ブレーカ パイロット/くルフ Pilot vaIve (for Hibbler&Break
T B
=葛SEll
Al+
lレバーロックi
しever澄k弓l
l トノー ! J
､Plt l
▼､
＼ヽ
′
′ 一 -イ･
ヽ′
▲
01t
l
t
1
l
l
e｢'弓
1 t
l｡｡b
Plバイパス回路 PIBy-PaSS circuit
l CT2 CP2
P2バイパス回路 P28y-PaSS
Circuit
タンク回蕗 Tankcirc山t
1
‡ t
l
l l
I
】 l
CTl CPl
l
l
1 l
P2パラレル回路 P2pa｢atlet Circ山t Plパラレル回蕗
PIpara暮I8】
Circuit
'l
】￣
ヽ
l
占フ
/一
Plネガコ ン回路 ( 4)
t
1l
l
l
l
0
11Tl ,一人
l≡:･;芸Ea
37.7HPa at30L (P3)
QU
l′/少
8 0 1 2 3 4
1 5 5 5 5 5
SolenoidproportionatvaIve Main controIvalve Se暮ectorvalve Stopvalve
Pilotvalve(Fornibbler&breaker) Returnfilter(Forbreakeronty)
Trang 16$K200(LC)Ⅶ $K2劫(LC)Ⅶ $K320(LC)Ⅶ
$K210(LC)Ⅶ $K2封(LC)Ⅶ $K謝(LC)Ⅶ
$K2抑NLCⅦ $KおONLCⅦ
B
臣ヨ
51
52
ニブラ Nibbler
些㌔
P2ネガコン回路
(SE27)
P2Nega-Con
CけCult
→/
→＼背圧回路
(SE28)
pB｡2 雪子ヲヒ∪?呈eSSu｢e
Explanation A.Breakercircuit l.PiIot circuit
①ThepilotgearpumpdeliveryoilflowsintoPlportofsolenoidproportional valve(18).
②Theleverlockactuates,andthedeliveryoilflowsintopilotvalve(53)for
nibblerandbreakerandpilotvalveforATTthroughAlport
③withtheoperationofpilotvalve(52),thedeliveryoilactsonAdd-OnVal,e PBo2portofmaincontrolvalve(50)andswitchesthespool.
④Concurrently,thevoltageoutputbylowpressuresensor(SE-11),negative
COntrOIsensors(SE-26,SE-27)andbackpressuresensor(SE-28)isinput
into mechatro controller
⑤ThecommandcurrentfrommechtrocontrolleractsonP2cutproportional valve(PSV-B)onsolenoidproportionalvalveblock(18)andswitchestheP2
CutSpOOl
⑥ThecommandcurrentfrommechatrocontrolleractsonPlpumppropor-tionalvalve(PSV-Pl)andnegativecontroIsensor(SE-26)hasthePlpump
deliveryflowratetotheminimumreduced
亘∋
⑦ThecommandcurrentfrommechatrocontrolleractsonP2pumppropor-tionalvalve(PSV-P2),andthenegativecontroIsensor(SE-27)andback pressuresensor(SE-28)haveP2pumpdeliveryflowratei皿CreaSed.
孟￡詔⑧whenboomraiseandbreakeroperationsarecarriedo｡t｡｡｡｡｡rre｡tly,Pl
pumpactsonboomraiseoperation,makingtheboomraiseoperationpossi-ble
PAo2
Ao2
B02
2.Maincircuit
①p2pu?pdeliveryoilflowsthroughP2portofmaincontrolvalve(50),and
flowslntOP2by-paSSCircuitontheupperstreamofthetravelstraightsec-tion
②p2by-paSSCircuitisclosedbecauseP2cutspoolismoved.Thereforethede_
加eryoilopensloadcheckvalveCP2andflowsintoP2parallelcircuit
③AndthedeliveryoilopensloadcheckvalveLCo20ntheAdd_｡nValveand
flowsintothespool
④Becausethebreakerspoolismoved,thedehveryoilflowsthrougharound
thespool,andisfedintothebreakerthroughBo2portofmaincontrolvalve
(50)andstopvalve(52).
⑤Thereturnoilfromthebreakerreturnsintoreturnfilter(54)useddirectly andspeciall)rforthethebreakerofhydrauhctankthroughstopvalve(51).
SelectingconditionandproportionalvatvecommandwhennibbIerconflux&slngleflow ■
and breakerarein use.
Command引卯alfromproportionalvalve■
(Wi綿:○′Without:-) 一
Conflux&
■
SlngIeflow Switching
Se暮ector Pl P2 TraveI Pl P2 Selector
SWitch Valve(51) PumP PumP St｢aight Cut Cut
Nibblerconf山x ConfIuxON N ○ ○ ○ ○ ○
○
○
NibbIersmgleflow●
ConfluxOFF N ○
Breaker ConfluxOFF B ○