IS 14469: Mobile cranes - Determination of stability

11 Pages·1997·1.2 MB·English

by  Bureau of Indian Standards

इंटरनेट मानक
Disclosure to Promote the Right To Information
Whereas the Parliament of India has set out to provide a practical regime of right to
information for citizens to secure access to information under the control of public authorities,
in order to promote transparency and accountability in the working of every public authority,
and whereas the attached publication of the Bureau of Indian Standards is of particular interest
to the public, particularly disadvantaged communities and those engaged in the pursuit of
education and knowledge, the attached public safety standard is made available to promote the
timely dissemination of this information in an accurate manner to the public.
“जान1 का अ+धकार, जी1 का अ+धकार” “प0रा1 को छोड न’ 5 तरफ”
Mazdoor Kisan Shakti Sangathan Jawaharlal Nehru
“The Right to Information, The Right to Live” “Step Out From the Old to the New”
IS 14469 (1997): Mobile cranes - Determination of stability
[MED 14: Cranes, Lifting Chains and Related Equipment]
“!ान $ एक न’ भारत का +नम-ण”
Satyanarayan Gangaram Pitroda
““IInnvveenntt aa NNeeww IInnddiiaa UUssiinngg KKnnoowwlleeddggee””
“!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता हहहहै””ै”
Bhartṛhari—Nītiśatakam
“Knowledge is such a treasure which cannot be stolen”

IS1 4469 : 1997
IS0 4305 : 1991

Indian Standard
ELIBOM CRANES - NOITANIMRETED FO YTILIBATS
ICS 53.020.20

0 SIB 7991
BUREAU OF INDIAN STANDARDS
KANAM ,NAVAHB 9 RUDAHAB HAHS RAFAZ GRAM
NEW IHLED 200011

1yaM 799 Price Group 3
,senarC gnitfiL sniahC dna sti detaleR tnempiuqE lanoitceS Committee, DMH 41
LANOITAN FOREWORD
sihT naidnI dradnatS hcihw si lacitnedi htiw 0SI 5034 : 1991 eliboM‘ senarc - noitanimreteD fo ,’ytilibats
deussi yb lanoitanretnI noitazinagrO rof noitazidradnatS ,)OSI( saw detpoda yb eht uaeruB fo naidnI
sdradnatS no eht snoitadnemmocer fo eht ,senarC gnitfiL sniahC dna stI detaleR tnempiuqE lanoitceS
Committee, dna lavorppa fo eht yvaeH lacinahceM gnireenignE noisiviD .licnuoC
ehT txet fo 0SI dradnats sah neeb devorppa rof noitacilbup sa naidnI dradnatS tuohtiw .snoitaived niatreC
ygolonimret dna snoitnevnoc ,era ,revewoh ton lacitnedi ot esoht desu ni naidnI .sdradnatS noitnettA si
ylralucitrap nward ot eht :gniwollof
a) Wherever eht lanoitanretnl’sdrow ’dradnatS raeppa gnirrefer ot siht ,dradnats yeht dluohs eb daer
sa naidnI‘ .’dradnatS
b) Comma ( , ) sah neeb desu sa a lamiced marker elihw ni naidnI ,sdradnatS eht tnerruc ecitcarp si
ot esu a lluf pots ( . ) sa a lamiced marker.
nI siht detpoda ,dradnats ecnerefer sraeppa ot niatrec lanoitanretnI sdradnatS rof hcihw naidnI sdradnatS osla
.tsixe ehT gnidnopserroc naidnI sdradnatS hcihw era ot eb detutitsbus ni rieht ecalp era detsil woleb gnola htiw
rieht eerged fo ecnelaviuqe rof eht snoitide :detacidni
lnterna tional Standard Corresponding Indian Standard Degree of
Equivalence
0SI l-6034 : 0991 SI 37431 ( traP 1 ) : 2991 senarC - lacitnedI
:yralubacoV traP 1 lareneG
0SI 2-6034 : 5891 SI 37431 ( traP 2 ) : 2991 senarC - lacitnedI
:yralubacoV traP 2 eliboM senarc
.’
0SI 2034 : 1891 SI 76441 : 7991 senarC - Wind lacitnedI
daol tnemssessa
1891:0134OSI SI 07441 : 7991 senarC - tseT lacitnedI
edoc dna serudecorp
nI gnitroper eht stluser fo a tset or sisylana made ni ecnadrocca htiw siht ,dradnats fi eht lanif ,eulav devresbo
or ,detaluclac si ot eb dednuor ,ffo ti llahs eb enod ni ecnadrocca htiw SI 2 : 0691 seluR‘ rof gnidnuor ffo
laciremun seulav (revised)‘.
IS 14469 : 1997
IS0 4305 : 1991
Indian Standard
ELIBOM CRANES - NOITANIMRETED FO YTILIBATS
1 Scope 0SI ,5691:2-6034 Lifting secnailppa - yralubacoV -
Part 2: Mobile cranes.
sihT lanoitanretnI dradnatS seificeps eht snoitidnoc
ot eb nekat otni noitaredisnoc nehw gniyfirev eht 0SI ,1691:0134 Cranes - Test code and procedures.
ytilibats fo a elibom enarc yb ,noitaluclac gnimussa
taht eht enarc si gnitarepo no a firm dna level -rus
3 Calculations of stability
ecaf pu( ot 1 % .)tneidarg
tI seilppa ot elibom senarc sa denifed ni 0SI ,2-6034 1.3 General
.e.i secnailppa detnuom no sleehw )seryt( or
ehT noitaluclac llahs yfirev taht eht enarc si elbats
,srelwarc htiw or tuohtiw .sreggirtuo
rednu eht gniwollof :snoitidnoc
)a eht airetirc deificeps ni elbat ;1
b) eht arretirc deificeps ni ;2elbat
2 Normative references
c) drawkcab ytilibats ees( ;)3.3
ehT gniwollof sdradnats niatnoc snoisivorp ,hcihw
hguorht ecnerefer ni siht ,txet etutitsnoc snoisivorp
)d ytilibats htiw ecivres-fo-tuo dniw ees( )4.3
fo siht lanoitanretnI .dradnatS tA eht time fo -ilbup
,noitac eht snoitide detacidni erew .dilav llA -nats
sdrad era tcejbus ot .noisiver dna seitrap ot 2.3 Criteria for stability
stnemeerga desab no siht lanoitanretnI dradnatS
era degaruocne ot etagitsevni eht ytilibissop fo -pa 3.2.1 See elbat 1 dna elbat .2
gniylp eht most tnecer snoitide fo eht sdradnats -ni

detacid .woleb Members fo CEI dna 0SI niatniam 2.2.3 desaB no eht airetirc deificeps ni elbat 1 dna

sretsiger fo yltnerruc dilav lanoitanretnI .sdradnatS ,2elbat ti si dednetni taht eht detimil-ytilibats enarc
sgnitar lians eb elbasu ni a muminim dniw deeps fo
0SI ,1891:2034 Cranes - Wind load assessment. 3,8 m/s. rednU laiceps snoitidnoc erehw siht re-
tnemeriuq sesopmi a noitcirtser no detar .yticapac
0SI .0391:1-6034 senarC - yralubacoV - traP :I eht rerutcafunam llahs ylraelc yficeps eht mumixam
General. dniw deeps dedulcni ni eht ytilibats .noitaluclac

1
IS 14459 : 1997
IS0 4305 : 1991
Table 1
I Value to be taken into
Machine conRgutation/condition Loading
consideration I)
6n outriggerskrawlers*’ Applied load P52,1 + 0,l F
On wheels (tyres)*l Applied load P33,1 + 1.0 F
On c!awlers/wheels )seryt( nehw levart speed pu ot 0,4 m/s is permissible Applied load P33,1 + 0,l P
On crawlers/wheels )seryt( nehw levart speed greater naht 4,0 m/s is permlssible Applied load +P5,1 0,lF
1) nI these formulae
P Is the detar yticapac (hoist medium load) as specified by the crane manufacturer for the various configurations of the crane. It
shall be for the hoist medium load of the crane as defined by IS0 4306-l (see 3.5.1).
F Is the load from the mass of the jib and fly Jib referred to the )Ib head or fly jib head. (See IS0 4310 for the determination of
P.)
The value to be taken into consideration is intended to sir&late the dynamic forces arising during normal controlled operation.
2) For these configurations. the crane condition is stationary and relates to the travel of the crane as a whole but is not related to
hoisting, luffing, telescoping and slewlng.
Table 2
I Value to be taken into
Machine conllguration/condition gnidaoL
consideration’) I
On outriggers/crawlers*) Applied load 1,lP
_--___
Wind load IV
Inertia forces 11 -’
-- --__
On wheels (tyres)*) Applied load 1,17P
Wind load N
Inertia forces - 11
IO n crawiers/wheels (tyres) when travel speed up to 0,4 m/s is per-
missible

1) nI this column
D are the inertia forces due to hoisting, telescoping, slewing, luffing or travel. For cranes having stepped controls, the actual val-
ues from inertia forces shall be used. For cranes having infinitely variable controls. the value of II shall be taken as 0.
P Is as defined in table 1.
W Is the effect of the In-service wind and shall be calculated In accordance with IS0 4302.
2) For these configurations, the crane condition is stationary and relates to the travel of the crane as a whole but is not related to
hoisting, luffing, telescoping and slewing.

2
:
IS 14469 1997
:
IS0 4305 1991
sreggirtuo no eht edis fo eht reirrac rednu eht jib
3.3 Backward stability
llahs eb ton ssel naht 51 % fo eht latot thgiew fo eht
oT niater a elbanosaer ,nigram gnithgiewretnuoc .enarc
llahs eb detimil yb eht mass noitubirtsid nevig -eb
With eht lanidutignol sixa fo eht gnitator -curtsrepus
,wol eht ecnailppa gnieb ni eht gniwollof :snoitidnoc
erut fo eht enarc ni enil htiw eht lanidutignol sixa fo
eht ,reirrac ni rehtie ,noitcerid eht latot daol no eht
decalp no a firm, level gnitroppus ecafrus pu( ot
sleehw )seryt( or sreggirtuo rednu eht rethgil dedaol
1 % ;)tneidarg
fo~dne eht reirrac llahs eb ton ssel naht 51 % fo eht
latot thgiew fo eht enarc ni eht work aera deificeps
deppiuqe htiw eht tsetrohs deificeps jib, tes ta sti
yb eht ,rerutcafunam dna ton ssel naht 01 % fo eht
mumixam recommended jib elgna rof taht jib
latot thgiew fo eht enarc ni eht aera ton deificeps sa
;htgnel
a work .aera
htiw ,kooh kcolb-kooh or rehto gnildnah-daot
ehT sleehw-no )seryt( snoitatimil must eb met -nu
tnempiuqe gnitser no eht ;dnuorg
ssel yranoituac noitamrofni elbisiv ot eht rotarepo si
decalp no eht .enarc sihT noitamrofni llahs etats eht
htiw sreggirtuo eerf fo eht gniraeb ecafrus rof
gnitarepo snoitidnoc taht eriuqer eht sreggirtuo ot
sleehw-no )seryt( ;snoitaluclac
eb tes ot niatniam tneiciffus drawkcab .ytilibats
deppiuqe htiw eht tsegnol deificeps jib, or jib dna
bij-ylf noitanibmoc tes ta sti mumixam recom- 3.4 Stability with out-of-service wind (see
dednem jib elgna rof taht ,noitanibmoc dna -bus IS0 4302)
jected ot na ecivres-ni dniw gnitca from eht tsael
ehT rerutcafunam llahs etalupits eht laiceps pre-
elbaruovaf .noitcerid
snoituac ot eb nekat yb eht resu nehw eht enarc si
ehT deificeps mass noitubirtsid airetirc llahs eb sat- tuo fo ecivres dna eht gnikrow stimil nehw detcejbus
deifsi rof hcae thgiewretnuoc noitidnoc htiw eht ot .dniw
enarc detator ot eht tsael elbats snoitisop dettimrep
yb eht .rerutcafunam~
3.5 Determination of stability
3.3.1 Crawler-mounted cranes ~3.5.1 eulav~ehT fo P llahs eb hcus ,taht htiw gnidaol
snoitidnoc sa nevig ni elbat 1 dna 2elbat ni rehtien
ehT latot daol no eht gnippit enil no eht edis or dne esac llahs eht gninrutrevo moment fo eht enarc eb
fo eht egairracrednu gnitroppus eht tsael daol llahs retaerg naht eht gnizilibats moment.
ton eb ssel naht 51 % fo eht latot thgiew fo eht
.enarc
2.5.3 ehT snoitaluclac llahs eb made htiw eht enarc
ni eht tsael elbaruovaf .noitisop ,revoeroM lla eht
nehW deilppa ot relwarc senarc deppiuqe htiw re-
,sdaol daed ,sdaol ,sthgiewretnuoc ,seirossecca .cte
elbatcart relwarc ,seilbmessa eht rerutcafunam
hcihw evah na ecneulfni no eht ytilibats llahs eb
llahs edivorp no eht enarc yranoituac noitamrofni
nekat otni noitaredisnoc sa gnieb ni eht tsael
elbisiv ot eht rotarepo fi eht evoba noiretirc si ton
elbaruovaf noitidnoc sa sdrager rieht eulav dna rieht
met nehw srelwarc era .detcarter
.noitisop
2.3.3
Wheel-mounted cranes
3.5.3 seniL tuoba hcihw senarc no suoirav
sgnitnuom may pit dna hcihw era desu ot etaluclac
With eht lanidutignol sixa fo eht gnitator -curtsrepus
eht gnizilibats moment era nwohs ni xenna .A
erut fo eht enarc ta ”09 ot eht lanidutignol sixa fo eht
esehT era evitacidni ylno dna ni ecitcarp era -ed
,reirrac eht latot daol no eht sleehw )seryt( or
tnednep no ralucitrap sliated fo laudividni .sngised

3
IS 14469: 1997
IS0 4305 : 1991
A
Annex
(informative)
Tipping line of mobile cranes
NOTE 1 .AerugiF ot .Aerugif era evitartsulli .ylno nI tcat fo eht .sleehw roF selxa detnuom no niwt .seryt
,ecitcarp gnippit senil era tnedneped no laudividni -ed eht gniwollof owt sesac dluohs eb :deredisnoc
.sngis
)a ni eht esac erehw eht elxa is dexif ro .dekcolb eht
A.1 Cranes on wheels ~(tyres) tniop fo tcatnoc fo ehi retuo ;leehw
)b ni eht esac erehw eht leehw is no a gnikcor ,elxa
A.l.1 Crane on wheels (tyres) without
eht tovip sixa fo siht gnikcor .elxa
suspension or with the suspension locked (see
erugif 1.A dna erugif )2.A
ehT gnippit enil is eht enil gninioj eht stniop fo -noc
gnlpplT
line vtth
oscll\al?ng or
locked vaLklng beam
Front axle Rear axle
Figure A.1

gnlpplT
llne -4th
osclllatlng or
locked walklng beam
Figure A.2

4
IS 14469: 1997
is0 4305 : 1991
A.1.2 Crane on wheels with the suspension A.2 Cranes on outriggers (see figure A.4)
unlocked (see figure A.3)
ehT gnippit enil si eht line joining the centres of the
ehT gnippit enil si eht enil gninioj eht stniop fo -pa troppus ,tub fi elbixelf gnitroppus secafrus tsixe -eb
noitacilp fo eht .noisnepsus sedis eht sreggirtuo hcus( sa sleehw htiw citamuenp
,)seryi neht eseht may eb nekat otni .tnuocca
I sregglrtJl0
Figure A.3 Figure A.4
A.3 Cranes on crawlers (see figure A.5)
ehT gnippit enil si eht enil gninioj eht sixa fo eht
sprocket sleehw dna eht sixa fo eht reldi .leehw

gnlpplT segde I I
Figure A.5

5