Question 1

Jinsi ya kuchagua chemchemi kwa kutenganisha mitetemo?

Accepted Answer

To select springs for vibration isolation, first determine the mass of the machine and the desired natural frequency of the isolation system. The natural frequency should be well below the operating frequency — typically less than 1/3 of the lowest excitation frequency. Use the formula k = m × (2πf)² to calculate the required total spring stiffness, then divide by the number of springs to get the stiffness per spring. Finally, verify that the static deflection under gravity is acceptable and that the springs can support the load without exceeding their rated capacity.

Question 2

Marudio ya asili ni nini bora zaidi kwa kutenganisha mitetemo?

Accepted Answer

Kwa ajili ya kutenganisha mitetemo kwa ufanisi, marudio ya asili ya mfumo wa chemchemi-kizio lazima kuwa chini au sawa na 1/3 ya marudio ya chini yanayotumika (marudio ya msukumo). Kwa mfano, ikiwa mashine inaendeshwa saa 1500 RPM (25 Hz), mfumo wa kutenganisha unapaswa kuwa na marudio ya asili chini ya takriban 8 Hz. Marudio ya chini ya asili yanaboresha kutenganisha lakini yanahitaji chemchemi nyinzinyi na kupunguzwa kubwa kwa tuli. Mifumo ya kutenganisha ya kawaida inalenga 2–8 Hz kulingana na matumizi.

Question 3

Kwa nini marudio ya asili inapaswa kuwa chini ya 1/3 ya kasi ya uendeshaji?

Accepted Answer

The transmissibility of a vibration isolation system depends on the ratio of the operating frequency to the natural frequency. Isolation only begins when this ratio exceeds √2 ≈ 1.41. At a ratio of 3 (i.e., natural frequency = 1/3 of operating frequency), transmissibility drops to about 12.5%, meaning 87.5% of the vibration is isolated. Higher ratios give even better isolation. Below a ratio of √2, the system actually amplifies vibrations, with the worst case at resonance (ratio = 1).

Question 4

Ni chemchemi ngapi ninatumia kwa kutenganisha mitetemo?

Accepted Answer

Idadi ya chemchemi inategemea ukubwa wa mashine, mgawanyiko wa uzani, na muundo wa kumweka. Ufuataji wa kawaida hutumia chemchemi 4 (moja kila kona) kwa mashine za mstatili, au chemchemi 3 kwa miundo ya pembetatu. Ukakamavu wa jumla unaohitajika umegawanywa kwa usawa kati ya chemchemi zote. Kutumia chemchemi zaidi husambaza mzigo vizuri zaidi na hutoa utulivu zaidi, lakini kila chemchemi lazima kuwa nyinzini. Hakikisha chemchemi zote zina ukakamavu sawa ili kuonyesha kutokuwa na mwelekeo na kumzigo kasikasi.

Question 5

Kupunguzwa kwa tuli ni nini na kwa nini inamaanisha?

Accepted Answer

Kupunguzwa kwa tuli ni kiasi ambacho chemchemi inapoinyoshwa chini ya uzani wa kizio kinachosaidiwa kutokana na mvuto (δ = mg/k). Inamaanisha kwa sababu: (1) inabaini ni kiasi gani mashine itaponya wakati kuwekwa juu ya chemchemi, (2) inaunganisha moja kwa moja na marudio ya asili — kupunguzwa kubwa kunamaanisha marudio ya chini ya asili na kutenganisha kizuri, (3) chemchemi lazima kuwa na safari ya kutosha ili kukumbatia kupunguzwa kwa tuli pamoja na harakati yoyote ya kawaida, na (4) kupunguzwa kinachozidi kunaweza kusababisha matatizo ya utulivu. Chemchemi za kawaida za kutenganisha zina 5–25 mm ya kupunguzwa kwa tuli.

Uchaguzi wa Spring Kwa Frequency Lengwa

Results

Unene wa Chemchemi Inayohitajika

Ubadilishaji wa RPM hadi Hz

Ubovu wa Tuli & Unene wa Chemchemi kwa Chemchemi Moja

Mfano wa Vitendo

Kihesabigeni cha Chaguo la Chemchemi kulingana na Marudio ya Asili Lengwa

Published by Nikolai Shelkovenko on Febuari 15, 2026 Febuari 15, 2026

Results

Unene wa Chemchemi Inayohitajika

Ubadilishaji wa RPM hadi Hz

Ubovu wa Tuli & Unene wa Chemchemi kwa Chemchemi Moja

Mfano wa Vitendo

Duka

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