|
R. X. Maksudov
Pdf ko'rish
|
| bet | 145/157 | | Sana | 18.01.2024 | | Hajmi | 6,25 Mb. | | #140078 |
Bog'liq Mashina detallari (R.Tojiboyev va b.)vR:
1 -2 8 00
G
/?„,
=
x
\ R 2K 1
-A \ = 1.0-1.0 -2 80 0 1.3-1.0 = 3 6 4 0 / /
4.
Yuklanish 2 chi tayanchda nisbatan katta boiganligi uchun shu
tayanch podshipnik uchun dinamik yuk koiaruvchanlik qiymatini
aniqlaymiz
c . ^ ^ S . 3 6 4 0
j 573 ^ y 000- = 14033// >-c shart bajariladi.
5.
Ishlash muddati soat hisobida.
llY’ Г C V
10" f
1 4 0 0 0
V
,
Lu. , =
--------- ------- = --------------- ----------- - ~ 1 0 1 0 0 c ^ L
l A
573co2 { R .i : )
5 7 3 - 1 0 v 3 64 0
J
Masalan
Qiya tishli silindrsimon uzatma val tavanchlari uchun
podshipnik tanlansin. Valning burchak tezligi v r= 5/.‘/ c '/.Podshipnikning
ishlash
muddati
Lh=10000c.
Podshipnik
o ‘tkaziladigan
val
tayanchlarining diametri
d=40mm.
Tayanchlarga ta’sir qiluvchi kuchlar
R,=3000H, R2-4000H, Fa=1330H (10.17-rasm).
M a sa la n in g
echimi.
1. Val tavanchlari uchun a<12° b o i g a n d a 36208 yengil seriyali
zoldirli radial - tirak podshipniklar tanlaymiz, bunda S=30.6 kN,
S0=23/7kN,
Fa
X
10.17-rasm .
2. — - nisbat bo‘yicha x,u,e koeffitsiyent qiymatlarini jadvaldan
tanlaymiz.
=
1330 = 0 .0 5 6
b o ig a n d a x^O.56. u= 1.71, e=0.26.
C 0
2 3 7 0 0
3. Radial kuchlardan hosil b o ig a n qo‘shimcha bo'ylama kuchlarning
qiymatini aniqlaymiz.
202
www.ziyouz.com kutubxonasi
|
| |
