I nternational Standard , NTERNAT,ONAL ORGANIZATION FOR STANDARDIZATION MEW(LIYHAWAHAR OPrAHH3Al&lR fl0 CTAHAAPTH3AWlH ORGANlSATlON I NTERNATIONALE DE NORMALISATION Steel wi re ropes Ferrule secured e[.]
Trang 1,NT RA T,O AL O G NIZA TIO FO STADR IZATIO MEW(LIY HAWAA OrAH3Al&lR fl0 CTAAPTH3AWlH.O GNlSTlO INTR ATIO AL DE N RMALISTIO
C&bles e a cier - T ernin iso s ma ch n es
De criptors : meta l pro u ts, wire rope, lo ps, crimpin e d p ie e, sp ecific a tio s, te ts
8
B
Trang 2IS0 (h Interna tio a l O rga niza tio for Sta nda rdiza tio ) is a worldwid fe era tio of
na tio a l sta da rds b dies (IS0 memb r b dies) Th work of pre arin Interna tio a l
Sta d rds is n rma lly ca rrie out throug IS0 tech ica l com ite s Each memb r
b dy intereste in a s bject for which a tech ica l com ite h s b e esta blsh d h s
th rig t to b re rese te o tha t com ite Interna tio a l orga nia tio s, g v
rn-me ta l a d n n-g v rnme tal in la iso with ISO , a lso ta k e pa rt in th work
Dra ft Interna tio a l Sta d rds a o te by th tech ica l com ite s are circ la te to
th memb r b dies for a pro a l b fore th ir ac e ta ce as Interna tio a l Sta d rds by
th IS0 C ounci Th y a re a pro e in ac ord nce with IS0 proce ures re uirin a t
lea st 7 % a ppro a l by th memb r b dies v tin
Interna tio a l Sta d rd IS0 8 9 was pre are by T ech ica l Com ite ISO /T C 10 ,
Ste l wire rop es
Users sh uld n te tha t al Interna tio a l Sta nda rds un erg re isio from time to time
a d tha t a y refere ce ma e h rein to a y oth r Interna tio a l Sta d rd imp lies its
la test e itio , unles oth rwise sta te
0 Interna tio a l O rga niza tio for Sta nda rdiza tio , 19 6 0
Trang 3Steel wire ropes - F er ule-sec ured
T his Intern tio al Sta d rd sp c ifies minimum re uireme ts
for ferule-sec re eye termin tio s for g n ral-purp se ste l
wire ro es complyin with IS0 2 0 ; th ferules are ma e of
ste l aluminium or co p r T he eye termin tio may b ma e
eith r as a Flemish eye or a turn b ck lo p
Prototyp tests cov erin th typ ac e ta ce of ferule-sec re
s stems a d routin qualty co trol re uireme ts for ferule-
sec re ev e termin tio s are also sp c ifie in this Intern tio al
Sta d rd
IS0 2 0 , Ste l
Ch racteristic
3 Definitio s
wire ro es for g n ral purp ses -
splc ed) : Eye termin tio ma e by formin a eye, which is
sec re by me ns of a ferule pres e o th ro e T here are
two main typ s : th Flemish eye a d th turn b ck lo p
3.1.1 Flemish eye : Eye termin tio wh re th ro e e d is
splt in two p rts of thre or four stra ds e ch, which are la id
to eth r a ain in th o p site direc tio , formin a eye which
is s m etrical to th ro e axis T he ta ils of th stra ds are
distribute e ualy aroun th main b dy of th ro e Th y are
fix ed in this p sitio by me ns of a ferule (se figure 1)
Figure 1 - Flemish eye
3.1.2
turn b ck lo p : Eye termin tio wh re th ro e as a
wh le is b nt to form a eye, th ro e e d b in fix ed o to th
main b dy of th ro e by me ns of a ferule (se figure 2)
Figure 2 - T urn b tik lo p
resp nsibi ty for th material d sig , dime sio s, id ntific a -
tio , prototyp testin a d ma ufacture of th ferule a d th
sp cific atio of th meth d of a plc atio to wire ro es
Al ste l wire ro es for g n ral purp ses complyin with
IS0 2 0 may b fite with a ferule-sec ure eye termin tio ;
h wev er, th ro e sh l b s ita ly pre-orme for Flemish eyes
a d pre-ormin is also recomme d d for turn b ck lo ps
5 F rules
Elec tric weldin of ste l tub s for ferules u e o th Flemish
eye is p rmite prov id d th t th weldin is carie out prior to
F erules of aluminium or co p r sh l b pro u e by a proces
which giv es a completely se m-re h low pro u t
Ferules sh l n t h v e a y d fects which may afect th serv ice
p rforma ce
Afer pres in , th ferule sha ll b fre from a y te d nc to
c rackin by a ein
Trang 46 Ma tc in of ferules to wire ro e
T he matchin of ferules a d wire ro es sha ll b in ac ord nce
with th instru tio s of th sp nsor
T he ro e sha ll b c t in s ch a ma n r tha t th wire e ds are
n t h rd n d or weld d to eth r
8.1 T urn b ck lo p
p sitio in of th d a e d of th ro e Th wh le le gth of
th ferule sha ll co ta in th d a e d of th ro e a d th d a
e d sha ll b v isib le a fter pres in
Th d a e ds of th stra ds sha ll b lo g e oug so tha t th
ferule ca b pu h d o er th m with th whole le gth of its
c ln rica l pa rt
Th pres in o era tio sha ll b ca rrie out in ac ord nce with
th instru tio s of th sp nsor
sec red eye termina tion
T he d sig bre k in stre gth of a ferule-sec re eye termina -
tio (Flemish eye or turn b ck lo p) sha ll b a t lea st 9 % of th
minimum bre k in force of th resp ctiv e wire ro e
Samples of e ch typ of ferule sha ll h v p s e th tests
d s rib d in 1 1 a d 1 2
1 1 Tensie test to d stru tio
Tw o tests sha ll b ca rrie out o e ch size of fibre-core a d
ste l-core wire ro es for which th s stem is recom e d d
Th ro e co stru tio s u e for test sha ll b 6 x 19 a d 6 x 3
up to a d includin a n mina l ro e diameter of 14 m a d
6 x 3 for n min l ro e dia meters a o e 14 m
A ferule-sec re eye termina tio sha ll b forme with ut a
thimble a t e ch e d of e ch test piece T he minimum dista nce
b tw ee th insid e ds of ferules sha ll b 3 times ro e
diameter Th force sha ll b a ple by me ns of roun pins
h vin a s ita ble dia meter, thre d d throug th eye termina -
tio Not more th n 7 % of th minimum bre k in force of th
ro e as sp cifie in IS0 2 0 sha ll b a pple quickly; th rea fter
stres sha ll b a pple stea diy a t a rate of n t more th n
10 MPa/s unti th a ctua l bre k in loa d is re ch d
Th as embly sha ll h v p s e th prototyp te sie test if th
bre k in force of b th samples is in ex es of 9 % of th
minimum bre k in force of th ro e
1 2 Dura bi ty
Th tests sha ll b ca rrie out o thre ro e sizes which sha ll
re rese t, resp ctiv ely, th sma llest, mid le a d la rg st of
th se sizes for which th s stem is recom e d d
cha ra cteristic :
- co stru tio from eith r th 6 x 19 or 6 x 3 group;
- te sie gra e : 1 7 0 N/m 2;
- fibre main core
Th tests sha ll b ca rrie out o two as embles of e ch size
selecte Th a ssembles sha ll h v a ferule-sec re eye
termina tio a t e ch e d, a d sha ll b fite with sold thimbles
Th le gth of clea r ro e b tw ee th ferules sha ll b as for th
prototyp te sie test (se 1 1
Th tests sha ll b ca rrie out in a te sie fa tigue machin which
sha ll b ca a le of pro u in s bsta ntia lly th same stres
pa ttern a t b th th fixe a d mo in e ds
Each as embly sha ll b s bject to a cy clc te sio alo g th
ro e a xis of from 15 % to 3 % of th minimum bre k in force
of th ro e as sp cifie in IS0 2 0
Th machin fre ue c sha ll n t ex e d 15 kHz
To comply with this Interna tio a l Sta d rd e ch of th six
as embles selecte for prototyp tests sha ll withsta d 7 0 0
c cles a fter which th bre k in force of th as embly sha ll n t
b les th n 8 % of th minimum bre k in force of th ro e
12 Qua lity c ontrol of ferule
T he m eria l from which th ferule is ma e sha ll b insp cte
to e s re tha t it is fre from visible fla ws a d d fects
12.2 Ma ufa cturer’s certifica te
Th ferule mak er or sp nsor sha ll s p ly a certifica te with e ch
b tch of ferules sta tin tha t
a) th ferules are id ntica l, within ma nufa cturin
tolera nces set by th sp nsor, to th se which w ere
s c es fuly s bmite for th prototyp tests (ie co form
to typ ), a d
b) th ferules me t th relev a nt re uireme ts la id d w n in
this Interna tio a l Sta da rd
Trang 513 Qua lity c ontrol of a ssembles
s bje te to a ro tin te sie te t T he brea kin forc of th
asembly s all be n t le s than & I % of th minimum brea kin
forc sp ecifie for that rop e
Afer eac e e termina tio has be n s c re , th ferule s all
be in p ecte to e s re that it is fe fom v isib le fla ws or
d fec ts a nd that it has be n pre s d a nd s c re in ac orda nc
with clau e 8 a nd th in tu tio s p rov id d
14 Ma rkin
The ferule s a ll be d ra bly mark ed to id ntify th as embly
ma nufa cturer
Wh n a gre d betwe n th purc a ser a nd th manufacturer,
sample of c mplete asemble s lete at ran om s a ll be