حسابات نقل الحركة بالسيور
TRANSCRIPT
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@bj@szja@a@
sbra@lbja@u@lbn@@a@@b@@b@Z@@a@aa@NN@ba@NN@@@
@@@Ny@@c@
* * * * * * * * * * * * *
.
)( . .
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Transmission by BeltsCalculations of
.. .. ( ). . )(
.1:1)( )( .
)( .
Velocity ratioDriverDriven322:-
= .......................VrN
1d
2
d1
N2
=
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322 :Vr.N1(r.p.m).N2(r.p.m).d .((mm1d .((mm2
@br1@Z@
.323125 mm250 mm
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323aZ@
V r =d
2
d1
= =1 2 5
2 5 0
1
2 2 : 1
br2Z@
750 r.p.m 250 r.p.m.324
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324
a@ZVr =
N1
N2
= =1 2 5
2 5 0 1
3
1 : 3@ja@pb@@c@@bgZ@
-:
N1
N2
d2
d1
=
N1* d1 = N2 * d2
@
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@br3@Z@@
210 r.p.m 250 mm140mm325.
325aZ@
N1 * d
1 = N
2 * d
2
N2 =
N1
* d1
d2
=2 1 0 * 2 5 0
1 4 0= 3 7 5 r . p . m
@br4Z@
375 r.p.m140 mm 210 r.p.m326.
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326aZ@
N1 * d
1= N
2* d
2
d1 =
N2 * d
2
N1
=375* 140
2 1 0
= 250 r .p .m
Calculations of Double Transmission by Belts
327 .Drivers
Drivens.
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327..Driver-1..Driven-2..Driver-3..Driven-4 -:
Vr =N
1* N
3d
2* d
4
d1* d3N2* N4
=
V r =N
1
d2 * d
4
d1 * d
3N 4
=
:Vr.N1(r.p.m).N2(r.p.m).N3(r.p.m).
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N4(r.p.m).d .1((mm1
d .2((mm2d .3((mm3
d .4((mm4br1@Z@
3-28 d1300 mmd2150 mm r.p.m250N1d3200 mmd480 mm.:-
).()(.)(
328aZ@
(a)
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V r =d
2 * d
4
d1
* d3
=1 5 0 * 8 0
3 0 0 * 2 0 0=
1
5
(b)
V r =N
1
N4
N4
N4 =
1 2 5 0
5=
5 * 2 5 0 = 1 2 5 0 r .p . m
@@br2@Z@
329 .N41000 r.p.mN1300 r.p.m
-:.d2120 mmd3180 mmd490 mm).()(.)(
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329aZ@
(a)
Vr = N1
N4
= 300
1000 10
3=
10 : 3
(b)
Vr =
d2 * d
4
d1* d
3
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d1*
d1=
3
1 0=
1 20 * 9 0
180
1 0 * 1 2 0 * 9 0
3 * 180= 2 0 0 m m
* * * * * * * * * * * * *
.. ... (
).
.