Lokomotivlarning tuzilishi va loyhalashtirilishi
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KURS ISHI TVL-14 JAHONGIR
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Mdnam=9,5PDnam / nDnam (4)
Topilgan bog‘liqlik Mdnam=f(Id) va ndnam=f(Id) namunadagi teplovoz yuk tortish elektrodvigatelining elektromexanik xarakteristikasidir. Agarda maydonning kuchsizlanish koeffitsienti teplovoz namuna bilan bir xil deb qabul qilinsa loyihalashtirilayotgan teplovoz quvvati va reduktorning uzatishlar soni namunadagi teplovozning xuddi shunday ko‘rsatkichlariga mos kelsa, unda olingan elektromexanik xarakteristikalarni qayta hisob-kitob qilmasdan loyihalashtirilayotgan teplovoz g‘ildirak–motor tizimining elektr yuk tortish xarakteristikasini tuzishda ishlatish mumkin. Quyida ndnam=f(Id) va Mdnam=f(Id) hisob-kitobi asosida yuk tortuvchi dvigatel toki ID=600A regressiv koeffitsient tenglamasini nDnam=AI2D-BID+C qo‘llash usulini ko‘rib chiqamiz: ED121 dvigateli uchun 2-jadval bo‘yicha regressiya koeffitsienti quyidagicha: To‘liq maydon A=1,29. 10-3; B=3,3; C=2310; Kuchsizlanishning birinchi darajasi KM1: A=1,53.10-3; B=4,05; C=3048. Kuchsizlanishning ikkinchi darajasi KM2: A=3,15.10-3; B=7,63; C=5253. ID=600÷ 1300A tok qiymati uchun quyidagilarni olamiz: To‘liq maydon TM: 1)nDnam = 1,29·10-3·6002 – 3,3·600 + 2310 = 794,4 min-1; 2)nDnam = 1,29·10-3·7002 – 3,3·700 + 2310= 632,1 min-1; 3)nDnam =1,29·10-3·8002 – 3,3·800 + 2310= 495,6 min-1; 4)nDnam = 1,29·10-3·9002 – 3,3·900 + 2310= 384,9 min-1; 5)nDnam = 1,29·10-3·10002 – 3,3·1000 + 2310=300,0 min-1; 6)nDnam = 1,29·10-3·11002 – 3,3·1100 + 2310=240,9 min-1; 7)nDnam = 1,29·10-3·12002 – 3,3·1200 + 2310=207,6 min-1; 8)nDnam = 1,29·10-3·13002 – 3,3·1300 + 2310=200,1 min-1; Kuchsizlangan maydon KM1: 1)nDnam = 1,53·10-3·6002 – 4,05·600 + 3048 = 1168,8 min-1 ; 2)nDnam=1,53·10-3·7002 – 4,05·700 + 3048 = 962,7 min-1 ; 3)nDnam =1,53·10-3·8002 – 4,05·800 + 3048 = 787,2 min-1 ; 4)nDnam =1,53·10-3·9002 – 4,05·900 + 3048 = 642,3 min-1 ; 5)nDnam =1,53·10-3·10002 – 4,05·1000 + 3048 = 528,0 min-1 ; 6)nDnam =1,53·10-3·11002 – 4,05·1100 + 3048 = 444,3 min-1 ; 7)nDnam =1,53·10-3·12002 – 4,05·1200 + 3048 = 391,2 min-1 ; 8)nDnam =1,53·10-3·13002 – 4,05·1300 + 3048 = 368,7 min-1 ; Kuchsizlangan maydon KM2: 1)ndnam = 3,15·10-3·6002 - 7,63·600 + 5253 = 1809 min-1 ; 2)ndnam =3,15·10-3·7002 - 7,63·700 + 5253 = 1455,5 min-1 ; 3)ndnam =3,15·10-3·8002 - 7,63·800 + 5253 = 1165,0 min-1 ; 4)ndnam =3,15·10-3·9002 - 7,63·900 + 5253 = 937,5 min-1 ; 5)ndnam =3,15·10-3·10002 - 7,63·1000 + 5253 = 773,0 min-1 ; 6)ndnam =3,15·10-3·10002 - 7,63·1000 + 5253 = 671,5 min-1 ; 7)ndnam =3,15·10-3·11002 - 7,63·1100 + 5253 = 633,0 min-1 ; 8)ndnam =3,15·10-3·12002 - 7,63·1200 + 5253 = 657,5 min-1 ; Aylanuvchi vaziyat (4) formula yordamida aniqlanadi: To‘liq maydon TM: nDnam = 794,4 min-1; bo‘lganda MDnam = 9,5·207/794,4 = 2,47 kN·m; nDnam = 632,1min-1; bo‘lganda MDnam = 9,5·207/632,1 = 3,1 kN·m; nDnam = 495,6 min-1; bo‘lganda MDnam = 9,5·207/495,6 = 3,97kN·m; nDnam = 384,9 min-1; bo‘lganda MDnam = 9,5·207/384,9= 5,1kN·m; nDnam = 300,0 min-1; bo‘lganda MDnam = 9,5·207/300,0 = 6,55 kN·m; nDnam = 240,9 min-1; bo‘lganda MDnam = 9,5·207/240,9 = 8,16 kN·m; nDnam = 207,6 min-1; bo‘lganda MDnam = 9,5·207/207,6 = 9,47 kN·m; nDnam = 200,1 min-1; bo‘lganda MDnam = 9,5·207/200,1 = 9,82 kN·m; Kuchsizlangan maydon KM1: nDnam =1168,8 min-1; bo‘lganda MDnam = 9,5·207/1168,8 = 1,68 kN·m; nDnam =962,7 min-1; bo‘lganda MDnam = 9,5·207/962,7 = 2,04 kN·m; nDnam =787,2 min-1; bo‘lganda MDnam = 9,5·207/787,2 = 2,49 kN·m; nDnam =642,3 min-1; bo‘lganda MDnam = 9,5·207/642,3 = 3,06 kN·m; nDnam =528,0 min-1; bo‘lganda MDnam = 9,5·207/528,0 = 3,72 kN·m; nDnam =444,3 min-1; bo‘lganda MDnam = 9,5·207/444,3 = 4,43 kN·m; nDnam =391,2 min-1; bo‘lganda MDnam = 9,5·207/391,2 = 5,03 kN·m; nDnam =368,7 min-1; bo‘lganda MDnam = 9,5·207/368,7 = 5,33 kN·m; Kuchsizlangan maydon KM2: nDnam = 1809 min-1; bo‘lganda MDnam = 9,5·207/1809 = 1,08 kN·m. nDnam = 1455,5 min-1; bo‘lganda MDnam = 9,5·207/1455,5 = 1,35 kN·m. nDnam = 1165 min-1; bo‘lganda MDnam = 9,5·207/1165 = 1,68 kN·m. nDnam = 987,5 min-1; bo‘lganda MDnam = 9,5·207/987,5 = 2,09 kN·m. nDnam = 773 min-1; bo‘lganda MDnam = 9,5·207/773 = 2,54 kN·m. nDnam = 671,5 min-1; bo‘lganda MDnam = 9,5·207/671,5 = 2,92 kN·m. nDnam = 633 min-1; bo‘lganda MDnam = 9,5·207/633 = 3,1 kN·m. nDnam = 657,5 min-1; bo‘lganda MDnam = 9,5·207/657,5 = 2,99 kN·m. Shunday hisob-kitobni ID tokning 600 dan 1300 A gacha bo‘lgan oralig‘ida har 100 A ham olib borish lozim. Hisob-kitoblarga asoslanib namunadagi teplovoz yuk tortish dvigatelining elektromexanik xarakteristikasini tuzish mumkin. M62 turdagi teplovozni tortuv elektrodvigatelining elektromexanik xarakteristikasini hisob jadvali 1.1
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