1.Tính Toán Đai- Bánh Răng

7/26/2019 1.Tnh Ton ai- Bnh Rng

1/25

n chi tit my GVHD: c Nam SVTH: Dng Ng Thng

N CHI TIT MY

THIT K H THNG DN NG BNG TI.

A. TNH TON THIT K NG HC H DN NG.I. CHN NG C V PHN PHI T S TRUYN

S liu cho !"#c$

% &'c ()o *+,- i$ / 0 123 N

% V4, c *+,- i$ 5 0 6728 9:;

% ",-$ ? 0 @33 99

% Th, AhBc 5B$Ih

0 61233 h% S c> l9 5ic$ ;oc> 0 D c>

% GEc ,-hiF,- " 4A$ V> 4A ,h

% O,h !+,- chQ ,- !+,- h,-.

1. Cng sut lm vic.

Tho c,- hc D.666W $Plv=

F . v

1000=

950.1,56

1000 =1,482 kW

2. Hiu sut ca h dn ng.=br .. kn .ol

3

T!> *,- D.@6W > cE$

% Hiu ;uX * !uJK, *,h !+,-$

br=0,96

% Hiu ;uX * !uJK, >i $ =0,95

% Hiu ;uX l+, $ ol=0,99

% Hiu ;uX (h#A ,i $ kn=1

1


2/25


0Z

=br ..kn .ol3 =0,96.0,95.1 .0,993=0,885

3. Cng sut cn thit trn tr!c ng c"

Pyc=Plv

=

1,482

0,885=1,675 kW

#. $% v&ng 'ua( trn tr!c cng t)c

nlv=60000. v

D =

60000.1,56

.300 =99,313 vg/ph

*. Ch+n t, s% tru(-n s"

usb=u. ubr

T!> *,- D.[6W > cE$

u=3

ubr=4

0Z

usb=u. ubr=3.4=12

/. $% v&ng 'ua( trn tr!c ng c"

nsb=nlv . usb=99,313.12=1191,756 vg/ph

0. Ch+n ng c"?'> 5o *,- P6.@ 5#i $

Pyc=1,675 kW

nb nsb

Pc=Pyc

?o E > ch\, "]c nb=1000 vg/ph 5 Pc=2,2 kW .

2


3/25


,- c^ "]c ch\, l$ [_633&8Y@ cE$ Pc=2,2 kW 7 dc=28 mm .

nc=950 vg/ph

Co; ` 0 37a@ =81

Tmax

Tdn=2,2 5

Tmax

Tdn=2,0 .

. hn 4h%i t, s% tru(-na. 5)c 6nh t, s% tru(-n ca h

ut=

nc

nlv =

950

99,313=9,57

. hn 4h%i t, s% tru(-n ca H78 v t, s% tru(-n tru(-n ng9i.ut=uh .u n

T!> *,- D.[6W > ch\,$ uh=4

0ZTb ; !uJK, * !uJK, ,-oi l$

un=

ut

uh=9,57

4 =2,39

V4J > cE$

ut=9,57

uh=4

un=2,39

:. 8;nh t9)n c)c thng s% trn tr!c.a. 5)c 6nh cng sut

% C,- ;uX !F, !Bc c,- c$ Pct=Plv=1,482 kW .

3


4/25


% C,- ;uX !F, !Bc II$

PII= Pct

ol . kn=

1,842

0,99.1=1,497 kW % C,- ;uX !F, !Bc I$

PI= PII

ol . br= 1,497

0,99.0,96=1,575 kW

% C,- ;uX !F, !Bc ,- c^$

Pc' =

PI

ol . =

1,575

0,99.0,95=1,675 kW

. 5)c 6nh s% v&ng 'ua(

% T!F, !Bc ,- c^$ nc=950 vg/ph

% T!F, !Bc I$

nI=nc

u=950

2,39=397,157 vg/ph

% T!F, !Bc II$

nII=nI

uh=

397,157

4 =99,289 vg /ph

% T!F, !Bc c,- c$

nct=nII

ukn=

99,289

1 =99,289 vg/ph

c. 8;nh m mn% T!F, !Bc ,- c^$

Tc=9,55.106Pc

nc=9,55.106 .

1,675

950=16838,158mm

% T!F, !Bc I$

TI=9,55.106PI

nI=9,55.106 .

1,575

397,175=37870,586mm

%T!F, !Bc II$TII=9,55.10

6PII

nII=9,55.106 .

1,497

99,298=143987,249mm

%T!F, !Bc c,- c$

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Tct=9,55.106Pct

nct=9,55.106 .

1,482

99,298=142544,491mm

T!Bc.

Th,- ;

,- c^ I II C,- c

u 0

D7@1

ubr 0[ ubr

06

P(de 678a2 672a2 67[1a 67[fD

, 5-:Ahe 123 @1a762a 117Df1 117Df1TN99e 16838,158 37870,586 143987,249 142544,491

B. TNH TON THIT K B TRUYN.

I. TgNH TN THIjT kj O TRUYN NGI _ITH_NG.

Th,- ; JFu cmu$

P=Pc' =1,675 kW

T1=Tc=16838,158mm

n1=nc=950 vg /ph

u=u=2,39 .

!=60o

.

1. Ch+n ai v tit din ai

O !uJK, >i h>,-7 !> n h [.6 ! 216W 5#i$ P 0 678a2 (d 5 n1=950 vg /ph .

,F, > ch\, ip qi, >i _.

2. Ch9n ?@ng A;nh )nh ai d 1 "d 2 B

5


6/25


T!> *,- [.D66W 5#i >i _ > ch\, d1=140 mm

kiK9 !> 54, c >i.

v= d1 n1

60000=

.140 .950

60000 =6,964

m

s# v

max=25 m /s

0Zhr> 9s, iKu (i,

tc ,h d2 $

d2=u . d1 . (1$ )=2,39.140 . (10,03 )=324,833mm

T!> *,- [.D66W 0Z d2=315mm

Tb ; !uJK, h'c p$

ut= d2

d1(1$)=

315

140.(10,03)=2,32

S>i lch b ; !uJK,$

% u=|u tuu|.100=|2,322,392,39 |.100=3,01 9s,

3. 5)c 6nh Ah9ng c)ch tr!c a.

?'> 5o ut=2,32 T!> *,- [.66W > ch\,

asb

d 2=1,136=asb=1,136. d2=357,84 mm

ChiKu qi >i &

&=2. asb+ . ( d1+d2 )

2 +

(d2d1)2

4 asb2.357,84+

140+3152

+(315140 )2

4.357,84 =1451,79 mm

?'> 5o *,- [.6@6W > ch\, & ho iFu chu, 0Z & 0 6[33 99

6


7/25


S 5v,- chwJ cQ> >i !o,- 6;e l$ i

=v

&=

6,964

1,4=4,97 9s, T=,h ch=,h xc (ho,- cch !Bc

a=(+(2+%2

4

T!o,- E$

(=&d1+d2

2 =1400

140+3152

=1172,5

%=d2d1

2 =

3151402

=87,5

0Z

a=(+(2+%2

4=

1172,5+1172,52+87,52

4=579,646mm

tc ,h -Ec 9 !F, *,h >i ,hr

)1=180o

57o.(d2d1)a

=180o57

o.(315140)579,646

=163,31o>120o

0ZThr> 9s,

#. 8;nh s% ai D

*= P . k

[Po] . +) .+& .+u. +*

T!o,- E$

P C,- ;uX !F, !Bc *,h >i chQ ,-$ P 0 678a2 (d

7


8/25


[Po ] C,- ;uX cho Ah)A7 !> *,- [.616W 5#i d1=140 mm 5 v0 8718[ 9:; >

"]c$ [Po ]=1,63 (d 5 lo=1700 mm

k y & h ; i !\,- ,-7 !> *,- [.a6W > cE

k

=1,2

+) & h ; ,h h"z,- -Ec 9$

+)=10,0025. (180o)1 )=10,0025. (180

o163,31o )=0,958

+& H ; ,h h"z,- cQ> chiKu qi >i7 !> *,- [.686W 5#i$

&

&o=

1400

1700=0,823

> "]c +&=0,95

+u H ; ,h h"z,- cQ> b ;E !uJK,7 !> *,- [.686W 5#i

*'=

P

[Po ]=

1,675

1,63=1,027=+,=1

?o E$

*= P . k

[Po] . +) .+& .+u. +*=

1,675.1,2

1,63.0,958 .0,95 .1,135.1

=1,19

0ZS >i l $ { 0 D

*. C)c thng s% c" n ca ai

ChiKu !,- *,h >i$ O 0 {6e. % D

T!> *,- [.D66W > "]c$ ho=3,3 99 | 0 62 99 | 0 63 99 | H 0 6D72 99 |

` 0 36o

0Z O 0 {6e. % D 0 D6e.62 % D.63 0 @2 99

" *,h >i

da 1 d1+2 ho=140+2.3,3=146,6 mm

8


9/25


da 2d2+2 ho=315+2.3,3=321,6 mm

" *,h >i

d -1 da 1+=146,612,5=134,1 mm

d -2 da2+=321,612,5=309,1mm

/. 5)c 6nh lEc cFng an u v lEc cFng t)c d!ng ln tr!c

&'c c+,- *>, mu.

Fo=780.P . k

v . +). * +Fv

% O !uJK, ,h (} iKu ch~,h l'c c+,-. Fv=/m. v2

5#i /m l (hi l"],- 6 9

>i "]c !> !o,- *,- [.DD6W > "]c /m=0,105 kg /m qo E$

Fv=/m. v2=0,105.6,9642=5,902

0Z

Fo=780.P . k

v . +). * +Fv=

780.1,675.1,2

6,964.0,958.2+5,902=122,592

&'c c qB,- lF, *,h >i

Fr=2.Fo . * . sin)1

2=2.122,592.2 .sin

163,31o

2 =485,176

0. 8Gng h4 thng s% tru(-n ai

P 0 678a2 (d

n=950vg /ph .

u=ut=2,32 .

9


10/25


Th,- ; k= hiu Gi !

Tip qi, >i _

"i ,hr d1 6[3 99

"i l#, d2 @62 99

"i ,hr da1 6[878 99

"i l#, d

a 2 @D678 99"i ,hr d -1 6@[76 99

"i l#, d -2 @3176 99

GEc chF9 !s,h !+,- cQ> >i ` @8

S >i { D

ChiKu !,- *,h >i O @2 99

ChiKu qi >i & 6[3399kho,- cch !Bc > 21a78[8 99

GEc 9 *,h >i ,hr )1 68@7@6

&'c c+,- *>, mu Fo 6DD721D N

&'c c+,- c qB,- lF, !Bc Fr [f276a8 N

II. TgNH TN THIjT kj O TRUYN TRNG

10


11/25


Th,- ; mu 5o

P=PI=1,575 kW

T1=TI=37870,586mm

n1=nI=397,157 vg /ph

u=ubr=4 kW

1. Ch+n vIt liu lm )nh rFng

T!> *,- 8.66W > cE$

% V4 liu *,h l#,$

Nhs, hiu h)A $ [2 Chp ,hi luJ,$ i ci hi,

!,$ HO 0 61DD[3 ch\, 02=230

Gi#i hw, *K,$ 1b2=7502Pa

Gi#i hw, chJ$ 1ch=4502Pa

% V4 liu l9 *,h ,hr$

Nhs, hiu h)A $ [2 Chp ,hi luJ,$ i ci hi,

!,$ HO 0 61DD[3 ch\, 02=240

Gi#i hw, *K,$ 1b2=7502Pa

Gi#i hw, chJ$ 1ch=4502Pa

2. 5)c 6nh Jng sut ch9 4hK4

[1]=1lmo

3*4*56x6&

[ 1F]=1lm

o

3F74 736xF6F&

T!o,- E$

11


12/25


Ch\, ;^ *$ {*4 *56x=174 736xF=13" 3F H ; >, o, (hi =,h 5K ,- ;uX ipA 5 u,. T!> *,- 8.DDW 5#i.

% O,h !+,- chQ ,-$ 31=1,1 8 3F1=1,75

% O,h !+,- * ,- $ 32=1,1 8 3F2=1,75

1lmo

8 1lmo

,- ;uX ipA 5 ,- ;uX u, cho Ah)A ,- 5#i chu ( c^ ;z

{1lmo =20+70

1lmo =1,80

O,h chQ ,-$

{1lm 1o =201+70=2.240+70=5502Pa

1lm 1o =1,801=1,8.240=4802Pa

O,h * ,-$

{1lm 1o =201+70=2.230+70=5502Pa

1lm1o =1,801=1,8.230=4142Pa

6& " 6F& H ; ui h\ x) p, ,h h"z,- cQ> h, l9 5ic 5 chp i

!\,- cQ> * !uJK,

6&=m o9

6F&=mF

Fo9F

m " mF & *4c cQ> "


13/25


o " Fo S chu ( h>J i ,- ;uX (hi h 5K ,- ;uX ipA 5 ,- ;uX u,.

{o=30.02,4

Fo=4.106

0Z {o1=30.01

2,4 =30.2402,4=15474913,67

o2=30.022,4 =30.2302,4=13972305,13

Fo=4.106

9 " 9F S chu ( h>J i ,- ;uX "^,- "^,-. ?o * !uJK, chu i

!\,- ,h ,F,$

9=9F=60. c . n . t

V#i $

c S lm, +, (h#A !o,- 6 5v,- l+, c 0 6

, V4, c cQ> *,h !+,- , 0 @1a762a 5-:Ah

T,- h, l9 5ic cQ> * !uJK, 0 61233 h

91=9F1=60.c . n1 .t=60.1.397,157 .19500=464673690

92=9F2=60.c . n2 .t=91

u =464673690

4=116168422,1

V}

9 1>o 1= l y 9 1=o 1=6&1=1

92>o 2= l y 9 2=o2=6&2=1

F91>Fo1= l y F91=Fo1=6F& 1=1

F9 2>Fo 2= l y F9 2=Fo 2=6F& 2=1

?o 54J$

13


14/25


[11 ]=1lm1o

31*4*56x6&1=

550

1.1=5002Pa

[ 12 ]=1lm 2

o

32*4 *56x6&2=

530

1.1=481,8182Pa

[1F1 ]=1lm1o

3F174736xF6F&1=

480

1,75=274,2862Pa

[ 1F2 ]=1lm2

o

3F274 736xF6F&2=

414

1,75=236,5712Pa

?o J l * !uJK, *,h !+,- !B !+,- h,- ,F,$

[1]=mn ([ 11 ] " [ 12 ])=481,8182Pa

,- ;uX cho Ah)A (hi u i

[ 1]max=2,8.max ( 1ch1 " 1ch2 )=2,8.480=12602Pa

[ 1F1 ]max=[ 1F2 ]max=0,8.450=3602Pa

3. 5)c 6nh Ah9ng c)ch tr!c s"

a:sb=6a . (u+1 ) .3

T1. 6!

[ 1]2

. u . ; ba

T!o,- E$

6a H ; AhB huc 5o 54 liu l9 *,h !+,-. T!> *,- 8.26W > cE$

6a=49,52 Pa1/ 3

T1 9, xo, !F, !Bc chQ ,-$ T1=37870,586mm

[ 1] & ,- ;uX ipA xc cho Ah)A [ 1]=481,8182Pa

u & b ; !uJK, u 0 [

14


15/25


;ba " ;bd H ; chiKu !,- 5,h !+,-.T!> *,- 8.86W 5#i * !uJK, i x,-7

HO@23 > "]c ;ba=0,3 0Z ;bd=0,5.;ba(u+1 )=0,5.0,3 .5=0,75

6!" 6F!

& h ; ( p, ;' Ah, * (h,- Ku i !\,- !F, chiKu !,- 5,h!+,- (hi =,h 5K ,- ;uX ipA 5 u,. T!> *,- 8.a6W 5#i ;bd=0,75 > "]c

{6!=1,02756F!=1,065?o 54J$

a:sb=6a . (u+1 ) .3

T1. 6!

[ 1]2

. u . ; ba

=49,5.5 . 3

37870,586.1,0275

481,818

2

.4.0.3

=128,4 mm

Ch\,$a:sb=128mm

#. 5)c 6nh c)c thng s% Fn AhL4a. M un

9 0 3736373De. a:sb 067DfD7afe 99

T!> *,- 8.f6W ch\, mho iFu chu, > cE 9 0 D 99

. 5)c 6nh s% rFng

*1=

2.a:sbm .(u+1)

= 2.128

2.(4+1)=25,6

*2=u . *1=4.25,6=102,4

Ch\,$ {*1=

25

*2=100

Tb ; !uJK, h'c p$

ut=*2

*1=

100

25=4

15


16/25


S>i lch b ; !uJK,$

%u=|u tuu|.100=|444|.100=0 9s,

c. 5)c 6nh lNi Ah9ng c)ch tr!c chia

a: =

( *1+*2 ) m2

=(25+100 ) .2

2 =125 mm

Ch\, a:=125 mm

*. 5)c 6nh h s% d6ch chOnh

a: =a:

NF,x1=x2=0

)t:=)=20o

/. 5)c 6nh c)c h s% v mt s% thng s% ng h+c ca tru(-n

Tb ; !uJK, h'c p$ ut=4

" *,h !+,-$

{ d: 1=2 a:

ut+1=

2.125

4+1=50 mm

d: 2=2. a:d:1=2.12550=200 mm

V4, c 5v,- cQ> *,h !+,-$

v= d: 1 . n1

60000 =

.50 .397,175

60000 =1,04 m /s

16


17/25


T!> *,- 8.6@DW 5#i *,h !+,- !B !+,- h,- cE 54, c 5v,- l 673[ 9:; > "]ccXA ch=,h xc cQ> * !uJK, l CCt 0 1

T!> *,- PD.@6W 5#i$

CCt 0 1 HO@23

R+,- h,-

v=1,04m /s .

T> "]c h ; i !\,- ,- !o,- 5,- +, (h#A$6v=1,0526Fv=1,136

4a #1,25 < 0,63=m=*4=1 .

HO@23 >*v=0,85. v0,1

(hi 5 Z 2 9:; co, (hi 5 2 9:; h} *v=1

da 2 d: 2=200 mm


18/25


[ 1] ,- ;uX ipA xc cho Ah)A. [ 1] . *4 *v6x=481,8182Pa

*2 H ; ( p, c^ =,h 54 liu cQ> *,h !+,- +, (h#A. T!> *,- 8.26W >

"^c$*

2=2742 Pa

1/3

* H ; ( p, h},h qw,- cQ> 9M ipA xc.

*= 2sin (2)t:)= 2sin (2.20o )=1,764*$ H ; !,- (h#A !+,-$

*$=4$ )3V#i $) l h ; !,- (h#A ,->,-.

$) 1,883,2.( 1*1 +1

*2)=1,883,2.( 1

25+ 1

100 )=1,72

0Z

*$=4$ )3 = 41,723 =0,8726 H ; 4A !u,- i !\,- ,- ;uX ipA xc.

6=6)6!6v=1.1,0275.1,065=1,094

b: ChiKu !,- 5,h !+,-.

b:=;ba . a:=0,3.125=37,5=b:=37

Th>J 5o$

18


19/25


1=*2 * *$2.T1 . 6. (ut+1 )

b: . ut. d: 12

=274.1,764 .0,872. 2.37870,586 .1,094.537.4 . 502 =445,9892Paki9 !>

1

[]=481,8182pa1

1

1

[] .100 =481,818445,989

481,818 .100 =7,4 9s,

. PiQm nghim -n u%n.

1F1=2. T1 . 6F. 7$ .7! . 7F1

b: . d: 1 . m # [ 1F1 ]

'

1F2=

1F1 .7F2

7F1 # [ 1F2

]'

T!o,- E$

[ 1F1 ]'" [ 1F2 ]

'

,- ;uX u, cho Ah)A cQ> *,h chQ ,- 5 *,h * ,-

{[ 1F1 ]'=[ 1F1 ] . 74. 73 . 6xF=274,286.1.1 .032.1=283,0632Pa

[ 1F2 ]'=[ 1F1 ] . 74 .73. 6xF=236,571.1.1 .032.1=244,1412Pa

6F H ; i !\,- (hi =,h 5K u,.

6F=6F)6F!6Fv=1.1,065 .1,136=1,21

7$ H ; ( p, ;' !,- (h#A cQ> !+,-

19


20/25


7$=1

$)=

1

1,72=0,581

7! H ; ( p, ,-hiF,- cQ> !+,-$ ?o l *,h !+,- !B !+,- h,- ,F,

7!=1

7F1 " 7F2 H ; qw,- !+,-7 !> *,- 8.6f6W 5#i$

*v1=*1=25

*v2=*2=100

x1=x2=0

0Z{7F1=3,907F2=3,60Th>J 5o > cE$

1F1=2. T1 . 6F. 7$ .7! . 7F1

b: . d: 1 . m =

2.37870,586 .0,581.1 .3,9 .1,21

37.50 .2 =56,132Pa # [ 1F1 ]

'

1F2=1F1 .7F2

7F1=

56,13.3,6

3,9

=51,81# [ 1F2 ]'

0ZThr> 9s,

c. PiQm nghim 'u) ti

{1max=16/t=481,818.2,2=714,65 #[1]max

1Fmax 1=6/t. 1F1=2,2.56,13=123,49# [1F1]max1Fmax 2=6/t.1F2=2,2.51,81=113,982 #[1F1]max

V#i$ 6/t=Tmax

Tdn=2,2

. Mt s% thng s% hSnh h+c Ah)c ca )nh rFng

"

20


21/25


d1=m *1=2.25=50 mm

d2=m *2=2.100=200 mm

kho,- cch !Bc chi>$a=0,5. ( d1+d 2)=0,5. (50+200 )=125 mm

" 6D299

kho,- cch !Bc a: 6D299

S !+,- *1 D2

*2 633

d1 23 99

" d2 D3399

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1.Tính Toán Đai- Bánh Răng