Zanjirlash haydovchisida tish joshish chastotasi nima?

Tish joshish chastotasi (TMF) — zanjirlining boglamalari sprocket tishlari bilan shakllantirish chastotasi. U haydovchi sprocketi tishlari soniga shaft rotatsion chastotasini ko'paytmasiga teng: TMF = Z1 × RPM / 60. Bu chastota zanjirlash haydovchilarida dominant tebranish manbai bo'lib, eskisi yoki shikastlanagan tishlarda oshadi.

Zanjirlining boglama chastotasi nima?

Chain link frequency is the rate at which one complete revolution of the chain occurs. It equals the tooth meshing frequency divided by the total number of links: f_chain = Z1 × RPM / (60 × N_links). A defect on a single chain link will produce vibration at this frequency.

Tebranishdan zanjirlaning esinish diagnozini qanday qilaman?

Zanjir esinishi odatda tish joshish chastotasining amplitudasi va uning garmonikalarini oshiradi. Eskisi yoki cho'zilgan zanjir TMF atrofida zanjirlining boglama chastotasi bilan ajratilgan yon bandlarni ham chiqarishi mumkin. Bo'sh zanjirlardagi ta'sir turi tebranishi keng diapazonli shovqin bilan tish joshish chastotasining yuksak garmonikalarini hosil qiladi.

Zanjirlash haydovchilarida tebranish nimaga olib keladi?

Umumiy sabablar zanjir esinishi va cho'zilishi, sprocket joylashtirish xatasi, noto'g'ri zanjir kuchlanishi, eskisi sprocket tishlari, shikastlanagan yoki qattiq zanjirlaning boglama qismlari va akkord harekati (ko'pburchak effekti) ni o'z ichiga oladi. Ko'pburchak effekti zanjirlash haydovchilari uchun xosdir va tish joshish chastotasida tebranish hosil qiladi.

Zanjirlash haydovchilarida ko'pburchak effekti nima?

Ko'pburchak (akkord) effekti zanjir sprocketni silliq emas, balki ko'pburchak sifatida o'radi, shuning uchun paydo bo'ladi. Bu tish joshish chastotasida davriy tezlik o'zgarishiga olib keladi. Effekt sprockettagi kam tishlarda ko'proq ayon bo'lib, ko'proq tishlarga ega sprocketlardan foydalanib kamaytirish mumkin (≥21).

Muhandislik uchun bepul vosita

Zanjirli uzatma nosozligi chastotasi kalkulyatori

Roller zanjirlash haydovchi sistemalarida tish joshish chastotasi, zanjirlining boglama chastotasi, haydovchi tezligi va garmonikalarni hisoblang.

Roller Chain Tooth Meshing Zanjirlning Boglama Chastotasi

Results

Tishli o'zaro ta'sir chastotasi

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Zanjir bo'g'ini chastotasi (1 zanjir aylanish)

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Haydovchi val chastotasi

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Driven Speed

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Speed Ratio (Z₁/Z₂)

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Tishli o'zaro ta'sir harmonikalari

Harmonic	Frequency (Hz)	CPM	Eslatma

Tishli o'zaro ta'sir chastotasi

Tishli o'zaro ta'sir chastotasi (TMF) — zanjir bo'g'inlarining sprocket tishlariga kirish tezligining o'lchovi:

Z₁ — haydovchi sprocket tishlarining soni
n₁ — haydovchi val aylanish tezligi (RPM)

Zanjir bo'g'ini chastotasi

Zanjir bo'g'ini chastotasi zanjir halqasining bitta to'liq aylanishini ifodalaydi:

N_links — zanjirning umumiy bo'g'in soni

Driven Speed

Tebranish ko'rsatkichlari

Frequency	Source	Indication
1× TMF	Tishlar o'zaro ta'siri	Zanjirning normal ishlashi, ko'pburchak effekti
2×, 3× TMF	Harmonics	Zanjir износi, sprocket tishlarining износi, ortiqcha slekness
1× zanjir bo'g'ini chastotasi	Zanjir aylanishi	Yakka nuqsoni bo'g'in, qattiq bo'g'in
TMF atrofidagi yon bo'g'inlar	Modulation	Noqulay/cho'zilgan zanjir, noto'g'ri tekislash

Misol — 17/51 zanjir haykali

Given: Z₁ = 17, Z₂ = 51, Links = 120, n₁ = 1450 RPM

TMF = 17 × 1450 / 60 = 410.83 Hz

Chain freq = 17 × 1450 / (60 × 120) = 3.42 Hz

Driven speed = 1450 × 17/51 = 483.3 RPM

Speed ratio = 17/51 = 0.333

⚠️ Note: 21 dan kam tishga ega bo'lgan sprocketlar uchun, ko'pburchak (akkord) effekti muhim bo'lib, sog'lom zanjir haykallari ham ko'p TMF harmonikalarini hosil qiladi. Silliq ishlatish muhim bo'lgan joylarda 21+ tishli sprocketlardan foydalaning.