驱动桥设计说明书

`汽车设计课程设计 名: 号: 专业班级:

指导教师: `

`

1.1

驱动桥的结构和种类和设计要求

`

1.2

设计车型主要参数

p

T

km/h` mm1.3

主减速器结构方案的确定

i

i

i

i

i

p

i

ii

rrpi

ghr

r

r r

i

gh

p

i

=i

=

r

r

p

gh

i

i

i

`

（2）骑马式1.4

差速器结构方案的确定1.5

半轴形式的确定1.6

桥壳形式的确定`

2.1

概述2.2

主减速器齿轮参数的选择与强度计算

e

i

K

/n

TL

e

N

mi

TL

i

=i

i

TL i

K

K

=

jjj

r

rLB

LB

i

=

`r

r

LB

,

i

LB

jj

r

LB

LB

i

r

=

,

j），式（

LB

i n

=

LB

i nLB

=0

e

e

=0LB

LB

i n

=

r

r

=

LB

`i

=7

d

m

d

K

d

j

K

K

d d

N

m

j j d

d

=300mm d

m

d

/

mm

K

j

m

K

m

K

=~

m

N

m

j m j

m

=7mmd

=49mm d

=301mm

F

d

F

=50mm

F

mm

`

m

m

F F

mFg

m

m

F

=55mmF

=50mm

g

d

=m

d49mmd=301mm

AA=

dd

=

m

g

m

=

A

`

c=g

=

=

dd

d

dd

=d

d

d

d

m

mm

p

`p

F

p

N/mm

e

rr

i

i

gd

F

e

N

mig

d

p

mm

p

mp

p

p

p

mm rd

F

rr

`

p

p

N/mm

(

N

/mm)ww

w

FKmKJ

j

m

j j

K

K

=K

K

=

m

K

K

=1m mK

J

J

mm

mm

w

w

mm

mm

mm

mm

w

w

mm

mm

mm

jK

K

F

J

dj

d

p

K

K

K

K

m

C

N

/mmpd

49mmK

K

K

m`K

K

=1 K

F

50mm

j

=mm

j

=mm

M

W

M

W

W

W

,

W

M

i

g

d

e

i

i

ig

i

ig

i

e

i

i

igigi

d

=

dmT

dd

md

m

d

F

dm

d

m dm d

m

PP

)

)=

PP

)

)

`

AB

=

b

b

d

m

d

m

L

L

b=26mmc=69mm

A

B

Cr

p

p

amrr

rr

am

=

L

L

L

:

`

L=

L=

am

A

B

A

Q=

d

Lh=

Cr

Lh=

Cr

h=Lh

=Cr

A

B

Q=

d

Lh=

Cr

=

h=Lh

B

R

=

b

b

d

m

d

m

a=240mm

`

d=65mm

Lh=

Lh=

Cr

Lh

=Lh

=

Cr

>Lh

=

Q=

d

2.3

主减速器齿轮材料及热处理

m

m

m>

2.4

主减速器的润滑`

3.1

概述3.2

对称式圆锥行星齿轮差速器原理

r

AB

r

=

=

A

r=

r+

r

B

r=

r

r

r+

r=

r+

r

r

r

+

=2

3.3

对称式圆锥行星齿轮差速器的结构

`

K

mm

jK

j j

=

=55mm

=

=

54mm

,

L

L

r

=

I

L

L=

nn=4I

,

;

;

,

m

`m

=5mm

d

d

mz

mm;d

mz

mm

L

L

mm L

[

]

mm

N

m

l

l

d

d

d

d

TK

K

K

mK

mJ

TN

m

E

j

j=

N

m

`

m

=

N

m

K

K

K

K

mK

K

m

F

18mmm

5mm

= w

w

= w

w

`

4.1

概述

4.2

半轴的设计与计算

r

L

r

r

r

L

L

m

m

L

L

e

i/rr

i

iTL

=i

i

`r

r

L

L

d

~

d=35mm

d

mmTN

m

d

=N

mm

T

N

md

35mm

d

d

d

d

GJ TN

ml

N/mm

J

`

35mm

d

pb

d

d

p

N

m

40mmd

35mm

L

p

70mmb

b

mm

m=4mm

b

b

=

d

p

=

d

d

p

`

5.1

概述5.2

桥壳的受力分析及强度计算

/

g

gwM

M

g

g

w

g

/M

MW

M

）；W

`

:

mm

mm

d

:

mm

d

M

W

wd

wd

d

d

wd

=

P

i

i

/re

g

e

N

mi

g

i

r

r

Pm

=M

m

M

m

N

m

m

g

wM

N

m

N

N

m

i

i

g

e

,

i

,

,

i

gM

M

M

N

m

h

MW

=

W

mm

M

M

h

M

M

=

m

h

,,mm

M

=N

m,M

N

m h

m

m

rr

=

N

m

W

W

M

M