6.Yuklanish koeffitsiyenti.
:=
yuklamaning tishlararo taqsimlanishini xisobga oluvchi koeffitsiyent,
tishli g’ildirak gardishi bo’yicha yuklamaning notekis taqsimlanishini xisoga oluvchi koeffitsiyent,
dinamik koeffitsiyent,deb qabul qilamiz GOST 1643-81 bo’yicha (32-b)
7.Kontakt kuchlanishni quydagi formula bo’yicha tekshiramiz.
322.14<427 MPa
8.Tishli ilashmaga ta’sir etuvchi kuchlar .
Aylana kuch:
2
Radial kuch:
tg 0.3640, ,
9.Tishlarni egilishdagi kuchlanish bo’yicha musahkmlikka tekshiramiz.
yuklanish koeffitsiyenti. tish uzunligi bo’yicha yuklamaning notekis taqsimlanishini xisobga oluvchi koeffitsiyent , 1.25 -yuklamaning dinamik ta’sirini xisobga oluvchi koeffitsiyenti, GOST 21354-75 va 3.7-3.8-jadvaldan olingan.
-tish shaklini xisobga oluvchi koeffitsiyent,
Shesternyaniki,
18
Tishli g’ildirakniki,
Deb GOST 21354-75 (42-bet) dan tanlab olamiz.
Ruxsat etilgan kuchlanish,
( ):= ( :=1.75 xavfsizlik koeffitsiyenti,
sikllarning asosiy soniga mos keluvchi mustahkamlik chegarasi,
Shesternya uchun
,
Tishli g’ildirak uchun,
Shunda ruxsat etilgan kuchlanish quydagicha;
Shesternya uchun,
( ):= 236.571 MPa
Tishli g’ildirak uchun,
( ( ):=205.714 MPa
Quydagi munosabatni ( ) ya’ni shesternya va tishli g’ildirak uchun ruxsat etilgan kuchlanishni ular tishlarining shakliga nisbatini xisoblaymiz:
Shesternya uchun,
( )=56.59 MPa,
Tishli g’ildirak uchun,
( )=57.14 MPa,
Tishli g’ildirak tishining mustaxkamligini tekshiramiz:
(
:= ( )=65.70 MPa
( ) mustahkamlik sharti bajarilmoqda.
427>
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