I. Elektrodvigatel tanlash va yuritmaning kinematik xisobi

G’ildirak tishlarini eguvchi kuchlanish bo’yicha tekshirish:

eguvchi kuchlanish bo’yicha yuklanish koeffitsiyenti.
Quyidagi birliklarni jadval orqali topib olamiz:
K_Fα = 1.0 uzatmadagi g’ildirak tishlarining tayyorlanish aniqlik darajasini hisobga oluvchi koeffitsiyent;
tish uzunligi bo’yicha yuklamaning notekis taqsimlanishini xisobga oluvchi koeffitsiyent;
1.19 m/s – yuklamaning dinamik ta’sirini xisobga oluvchi koeffitsiyenti, GOST 21354-75 bo’yicha;
– tish shaklini xisobga oluvchi koeffitsiyent;
– tishning qiyaligini e’tiborga oluvchi koeffitsiyent,quyidagicha topiladi:
;
= 0.92 = 0.92;
K_F = 1.0 1.03 1.19 = 1.22 K_F = 1.22;



IV. Tasmali uzatmalarni hisoblash.
Kichik shkivning diamertirini aniqlash:

GOST 17383-73 bo’yicha sitandart qiymati -
Aniqlangan diametrni GOST 17383-73 bo’yicha sitandart qiymatini aniqlaymiz : 40;45;50;56;63;71;80;90;100;112;125;140;160;180;200;224;250;280;315;355;400;450;500;560;630;710;800;800;900;1000;1120;1250;1400;1600;1800;2000
Katta shkiv diametri quyidagicha aniqlaymiz :
D2=D1*itas*(1-ε)
D₂ = 40 5 (1-0.01) = 198 mm D₂ = 200 mm;

Bunda:
D1- Kichik shkivning diamerti

itas-tasmali uzatmaning uzatishlar nisbati
ε-sirpanish koeffitsiyent
Katta shkiv diametrini haqiyqiy qiymatini yuqoridagi standart qatordan qabul qilamiz .
Uzatishlar nisbati aniqlash


Uzatish nisbati farqi:
;
= 0; = 0

O'qlararo masofa:

;
=480;

Kichik shkivning qamrov burchagi:

= 160; 160;

Tasmaning uzunligi:

L= 2 𝛼+0.5π*(D1+D2)+
L = 2 480 + 0.5 3.14 = 1350.13 L=1400
Tasmaning uzunligini GOST1284.1-80 haqiyqiy qiymatini tanlab olamiz:
L: 400; 450; 500; 560; 630; 710; 800; 900; 1000; 1120; 1400; 1600; 1800; 2000; 2240; 2500; 2800; 3150; 3550; 4000; 4500; 5000; 5600; 6300; 7100; 8000; 9000; 10000; 11200; 12500; 14000; 16000; 18000.
Tasmaning tezligi:

=6.09

Aylana kuch

=

14-jadvaldan B 800 markali tasma tanlaymiz.

14-jadval.
Qamrov burchagi koeffitsiyenti,

Tasma tezligi ta'sirini hisobga oluvchi koeffitsiyent,

Ishlash rejimini hisobga oluvchi koeffitsiyent,
Cp = 1 bu koeffitsentni mashina turiga qarab tanlaymiz
Uzatma markazlari chizig'i qiyaligini hisobga oluvchi koeffitsiyent,
Qiyalik 60ᵒ gacha bo'lganda CӨ=1 deb qabul qilinadi
Qistirma enining 1 mm ga ruxsat etilgan ishchi yuklama
p0=3
(p)=p0* Cα* Cυ* Cp* CӨ
(p)=3*0.94*1.02*1*1=3.38 (p)= 3.38
Tasmaning eni,


Z=3 deb qabul qilamiz
Tasma eni quyidagi standartlardan tanlanadi: 20; 25; 32; 40; 50; 53; 71; 80; 90; 100; 112; 125; 140; 160; 180; 200; 224; 250; 280; 315; 355; 400; 450; 500; 560
Tasmaning dastlabki tarangligi, N
σ0=1.8 Mpa F0= σ0Btasδ (N)
δ= 5
F0=1.8*180*5=1620 F0=1620 (N)
Tasma tarmoqlaridagi kuchlar,
yetaklovchnikida,
Ftas1=F0+0.5*Ftas
Ftas1=1620+0.5*1733.99=2486.99 (N) Ftas1=2486.99 (N)
yetaklanuvchnikida,
Ftas2=F0-0.5*Ftas
Ftas2=1620-0.5*1733.99=753 (N) Ftas2=753 (N)
Ftas1 kuch ta'siridan kuchlanish, MPa
(MPa)