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[:KENVOORBËE
LDEN
lVoorbeeld5l
BANDREM
(Machinebouw)
Voor de
afgebeelde
bandrem
zal
een
remcardankoker
van
T
=
30,000
kgmm.
nodig
zijn.
Gegeven
is
a
=
140 mm,
d
=
400mm
en F
=
'lSks,
bereken
de
werkelijke
lengte
van
de remhef
boom
bii
een
wrijvingscoeÍficient
van
de band
en
remhefboom
van
p
='0.3-en
een aanrakingshoek
van
0
=
216"
tExemoel5l
BAIiDBROMSAR
'
(MaskinbYggnadsteknik)
I en
bandbroms
enligt
vidstàende
skiss
erfordras
ett
bromsmoment
T
=
30.000
kgmm'
Givet:
a
=
140
mm,
d
=
400 mm
och F =
15 kg.
Bestàm
draestànsens
effektiva
lángd
da
bandets
och
drasstànsen-s
friklionskocfficient
p
=
0,3
och
kon"takdinkeln o
=
216".
R'\l'i\
i:I:X1:
\Íl'1,
I
Antwoord:
Svar:
E
;.t=:4a
r
12T',|
^
=F'
d
'
.te
_l
'"
2x3O0O0x140
=@
=
667.0895
I
667.1mm
Remkracht
Bromskraft
P=+
o
_T
7-=p
1
=-T
'
ettÊ_1
u
Fl
=
Fza
'l
ettÊ
-
1
@4i
gru
o.3ElàE216El
l8oEl+FlEl
6E]zBgooooEl
140Ell5E4o0El
(epa
-
1l
il,
30


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