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Yechish:
deb olamiz. Bundan
.
Jadvaldan ustquyma po‘lat bo‘lib ustidan babbit B16 bilan quyiladi. Bunda
;
;
bo‘ladi. Bunda ularning qiymati me‘yorida bo‘ladi.
, unda tirqish
Berilgan tirqishga mos o‘tkazishni tanlaymiz:
o‘tkazish uchun, valning
o‘lchamlari
, teshikniki
, tirqishlar
.
, o‘rta qiymati
.
Industrial 30 moyi va uning o‘rtacha harorati
da qovushoqligi 18.2-grafikdan
tanlaymiz.
,
bu yerda
.
18.2-rasmdagi grafikdan
ni topamiz,
Val uchun
va ustquyma uchun
olsak
.
Demak, suyuqlikda ishqalanish ta‘minlangan.
Dumalash podshipniklariga doir masalalar yechish
1-masala.
Yetaklovchi konussimon shesterna valiga ta‘sir qiluvchi kuchlar
o‘lchamlar
valning
hisobiy
sxemasi
18.4-rasmda
berilgan.
. Yetaklovchi val konussimon podshipniklari hizmat muddatini hisoblang.
Yechish:
tayanch reaksialar
xz
tekisligida
;
1
1
1
min
33
,
764
50
14
,
3
2
60000
60000
d
v
n
mm
d
100
KN
F
10
2
1
min
1000
n
8
,
0
d
l
s
m
dn
v
mm
l
/
24
,
5
60
1000
1
,
0
14
,
3
60
;
80
s
m
MPa
pv
MPa
ld
F
p
r
/
5
,
6
24
,
5
25
,
1
;
25
,
1
100
80
10000
s
m
v
/
12
MPa
pv
10
MPa
p
15
00128
,
0
24
,
5
10
8
,
0
25
,
0
3
.
128
,
0
100
00128
,
0
m
d
s
8
/
8
e
H
072
,
0
126
,
0
100
d
054
,
0
0
,
0
100
D
mm
s
072
,
0
min
18
,
0
2
max
s
mm
s
or
126
,
0
S
t
60
s
MPa
pa
6
10
014
,
0
14
,
0
85
,
0
10
10
14
,
0
001
,
0
25
,
1
5
6
2
F
C
1
105
30
100
30
s
n
06
,
0
02
,
0
6
,
0
1
1
,
0
5
,
0
min
h
mm
R
r
003
,
0
1
mm
R
z
006
,
0
1
mm
h
kr
009
,
0
006
,
0
003
,
0
2
22
,
2
009
,
0
02
,
0
h
n
S
S
,
322
1020
;
2940
2
1
2
1
N
F
F
va
N
F
F
N
F
t
a
a
z
t
,
73
1
mm
f
mm
d
mm
c
77
,
85
,
120
1
1
1
1
min
974
n
1
1
2
f
F
C
R
t
x
18.4-rasm. Yetaklovchi valning hisobiy sxemasi.
Valga 7208 podshipniklari o‘rnatilgan
Tekshiruv:
yz
tekisligida
Tekshirish:
;
Natijaviy reaksiyalar
;
.
Konussimon podshipniklar radial reaksiyalarini (18.12) formula bo‘yicha bo‘ylama tashkil
etuvchisi
bu yerda 7208 podshipnigi uchun radial reaksiyani o‘q bo‘yicha (bo‘ylama) tashkil etuvchisi
.
.
4730
120
193
2940
;
;
1790
1120
78
2940
1
1
1
1
1
1
1
1
1
1
1
2
N
C
f
C
F
R
f
c
F
C
R
N
c
f
F
R
t
x
t
x
x
;
0
2940
4730
1790
1
2
r
x
x
F
R
R
.
1525
120
13800
193
1020
;
0
2
;
505
120
2
77
,
85
322
73
1020
,
0
2
1
1
1
1
2
1
1
2
1
1
1
2
N
R
d
F
f
c
F
C
R
N
R
d
F
f
F
C
R
y
a
y
y
a
t
y
0
1020
1525
505
1
2
z
y
y
F
R
R
N
R
R
R
y
x
r
1860
505
1790
2
2
2
2
2
2
2
N
R
R
P
y
x
r
4970
1525
4730
2
2
2
1
2
1
1
N
P
e
S
N
eP
S
r
r
1590
4970
38
,
0
83
,
0
83
,
0
;
592
1860
38
,
0
83
,
0
83
,
0
2
1
1
2
2
38
,
0
e
Podshipniklardagi bo‘ylama kuchlar. Bizning misolda
u holda
.
Chap podshipnikni ko‘ramiz.
Nisbat
, shu sababli bo‘ylama yuklanishni hisobga olish kerak.
(18.10) formula bo‘yicha ekvivalent yuklanish
berilgan sharoitda
konussimon podshipniklar uchun
da
koeffitsient
va koeffitsient
.
Ekvivalent yuklanish
Hisobiy chidamlilik mln aylanishda
mln. aylanish.
Hizmat ko‘rsatish muddati
bunda
yetaklovchi valning aylanishlar takroriyligi.
O‘ng tarafdagi podshipnikni ko‘ramiz.
Nisbat
, shu sababli ekvivalent yuklanishni aniqlashda
bo‘ylama kuchlar hisobga olinmaydi.
Ekvivalent yuklanish
Hisobiy chidamlilik, mln aylanishda
mln. aylanish.
Podshipnik hizmat muddati, soat:
Podshipniklarning hisoblangan hizmat muddatlari yetarli.
;
0
;
2
1
a
F
S
S
;
1590
1
1
N
S
P
a
a
a
F
S
P
1
2
N
1912
322
1590
e
P
P
r
a
03
,
1
1860
1912
2
2
;
2
2
2
t
eht
a
r
e
K
K
YP
XVP
P
;
1
2
T
eht
K
K
V
l
P
P
r
a
2
2
4
,
0
x
565
,
1
y
.
76
,
3
3760
1912
565
,
1
1860
4
,
0
2
kN
N
P
e
4400
76
,
3
5
,
46
76
,
3
5
,
46
3
3
3
2
3
2
3
10
2
e
e
e
P
C
P
C
P
C
L
soat
n
L
L
n
75000
974
60
10
4400
60
10
6
6
1
1
min
974
n
e
P
P
r
a
32
,
0
4970
1590
1
1
kN
N
K
K
VP
P
T
eht
r
e
97
,
4
4970
1
1
1
4970
1
1
1740
97
,
4
5
,
46
97
,
4
5
,
46
3
3
3
10
2
e
P
C
L
.
29000
974
60
10
1740
60
10
6
6
soat
n
L
L
n
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