INTERNATIONAL STANDARD INTERNATIONAL ORGANIZATION FOR STANDARDIZATION ORGANISATION INTERNATIONALE DE NORMALISATION MEXAYHAPOAHAR OPrAHMSAuklR I IO CTAHAAPTkl3A~Wl Synchronous bel ts Calculation of pow[.]
Trang 1INTERNA TIONA L STANDARD
19 7-12-01
IS0 5 9 : 19 7’ (E)
Trang 2IS0 (h Intern tio al O rga izatio for Sta d rdizatio ) is a worldw id fe eratio of
Users sh uld n te th t a ll lriterna tio a l Sta d rds un ergo rev isio from time to time
Trang 3Sy nchronous b elts
c a lc ula tio of p wer ra ting a nd c entre dista nce of sta nda rd
The numeric a l v a lues of certa in pa ra meters u e in th c a lc ula -
a nd sha ll b sp c ifie by th b elt ma nufa c turer
ditio s for a sa tisfa ctory p rio of time, prov id d tha t th drive
ha s b e installe a nd is ma inta in d in a pro er ma nn r
-
th mas of a ln a r metre of b elt;
- th a ng la r veloc ity of th sma ller puley ;
Ta b le 1
Symbol
pb
p itc h of th te th of th b elt
m
a nd puley
bs wia th of th b elt to b ra te
m
h
ba se width of th wid st
m
sta nda rd b elt of pitc h p b
(se ta b le 2)
3,
m ln a r mas of a b elt ha v ing
a width b ,,
kg/ m
T,
belt havin a width b ,,
radls
p ule
V belt veloc ity
m/s
Z i
n mb er o f te eth o f the smaller
p ule
z2
n mb er o f te eth o f the large r
p ule
zb
n mb er o f tee th o f the belt
Gi
n mb er o f tee th in me h o the
sma ller p ule
PO
p ower ratin o f a belt o f b ase
kW
width b ,,
P p ower ratin o f a b e lt o f b ase
kW
width
b ,
4,
width fac tor
k z tee th in me h fac tor
e nt C 1
inte er part o ly o f th
ex p re sio folowin
1
Trang 49 Fa c tor kw
The factor k, is given by the for m ula
MXL
b
s
bs
W=
1,14
b
.*.(l)
S
wher e b ,, de en s up n the p itc h c ode a s given in tab le 2
XXL
6 4
XL
9
L
25 ,4
H
7 6.2
Trang 5UDC 621.8 052.4
De c rip tors : sy nc hro o s ta nsmis io , b elt drives, b elts, p ower ta nsmisio b elts, sy nc hro o s b elts, r ate p ower, r ule of c alc ulatio
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