R. X. Maksudov
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Mashina detallari (R.Tojiboyev va b.)
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• Seit • £ , Г4 271 ‘ cos у I c o s y ’ i bunda: 5 (rad) qamrov burchagiga v=5d,/2 ga teng b o ‘ladi, sa= ( l , 8-2,2)- vn qoplanish koeffitsiyent; c -0 ,7 5 -g ‘ildirak tish sirtining chervyak 99 www.ziyouz.com kutubxonasi o ‘r a m i s i r t i g a t e g i b t u r i s h i t o ‘ la b o i m a s l i g i n a t i j a s i d a k o n t a k t c h i z i g ‘ i u z u n l i g i n i k i c h r a y i s h i n i h i s o b g a o l u v c h i k o e f f i t s i y e n t , n a t i j a d a { 0 . 5 4 - S e J = W -0.S5_3J4-1.85.Q 75 = ,- 2 |J b u n d a n cos у cos 10 F, KH _ 2 ТЖ, , _ 1 J 9 T2K h , Cosa-Cosy ■ (.£ d2 -Cosa Cosy -1,21c/, d:dl Z e , q , / ? K - q i y m a t l a r i n i 1- f o r m u l a g a q o ‘y i b q u y i d a g i i f o d a n i o l a m i z : ~ V q I Ъ П Т,К И 480 1 7 ж ^ ^ г , q H- Z EJ-g- = 148, (2) \ /О, v d 2' <^i ’ 0,17 • c/2 dinam ik yuklanishlarni hisobga oluvchi koeffitsyenti, qiymati V3 <3m/s b o i g a n d a К Hy=l , 0, V3 > 3m/s b o i g a n d a К ш —1,1-1,3. K Np-y u k la n ish n i t o ‘planishini hisobga oluvchi koeffitsiyent K Np= 1,0. F o rm u la (2) y ordam ida kontakt kuchlanishning hisobiy qiymati aniqlanadi, uzatmani o ‘qlararo m asofaga nisbatan yechamiz, bunda: d i= q m = q d 2./Z2; d 2= m Z 2; a= 0,5m (q+ Z 2)=0,5d2(q/Z 2+ l.); d 2= a(0 ,5 (q /Z 2+ l)) ; qiymatlarini 2-form ulaga q o ‘yib quyidagi ifodani olamiz: Download 128 Kb. Do'stlaringiz bilan baham: |
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