Alat Kejuruteraan Percuma
Kalkulator Ketegangan Tali Pinggang
Kira tegangan tali sawat yang betul menggunakan kaedah pesongan, kaedah frekuensi atau pengukuran daya langsung. Menyokong tali sawat-V, tali sawat pemasaan dan tali sawat rata.
Keputusan
Kaedah Pemansuhan
Kaedah pesongan mengukur tegangan tali sawat dengan mengenakan daya serenjang yang diketahui pada titik tengah rentang tali sawat dan mengukur pesongan yang terhasil.
- T — tegangan untaian statik (N)
- F — daya pesongan yang dikenakan (N)
- L — panjang rentang bebas (mm)
- d — pesongan yang diukur pada titik tengah (mm)
Kaedah Frekuensi
Kaedah frekuensi menggunakan frekuensi getaran semula jadi rentang tali sawat. Ini lebih tepat dan boleh diulang, terutamanya untuk tali sawat pemasaan.
- T — tegangan untaian (N)
- m — jisim tali pinggang per unit panjang (kg/m)
- L — panjang rentang bebas (m)
- f — frekuensi semula jadi yang diukur (Hz)
Julat Ketegangan yang Disyorkan
| Jenis Tali Pinggang | Ketegangan setiap Tali Sawat (N) | Garis Panduan Pesongan |
|---|---|---|
| Tali pinggang V SPZ | 150 – 350 | 1.6 mm setiap rentang 100 mm |
| Spa tali pinggang-V | 200 – 500 | 1.6 mm setiap rentang 100 mm |
| SPB tali pinggang V | 300 – 700 | 1.6 mm setiap rentang 100 mm |
| SPC tali pinggang V | 500 – 1200 | 1.6 mm setiap rentang 100 mm |
| Tali Sawat Pemasaan (HTD) | Mengikut spesifikasi pengeluar | Kaedah frekuensi diutamakan |
| Tali Pinggang Rata | 200 – 1000 | Berbeza dengan lebar |
Contoh Praktikal
Diberi: Rentang L = 1500 mm, Daya F = 20 N, Pesongan d = 5 mm
T = (20 × 1500) / (4 × 5) = 30000 / 20 = 1500 U setiap helai
Diberi: Jisim m = 1.2 kg/m, Rentang L = 0.5 m, Frekuensi f = 45 Hz
T = 4 × 1.2 × 0.5² × 45² = 4 × 1.2 × 0.25 × 2025 = 2430 U
⚠️ Nota: Tali pinggang baharu hendaklah ditegangkan 20–30% lebih tinggi daripada nilai nominal untuk mengimbangi regangan awal. Tegangan semula selepas 24–48 jam operasi.
There are three main methods:
- Deflection method: Apply a known force perpendicular to the belt at the midpoint of the span. Measure the deflection. Use the formula T = (F × L) / (4 × d).
- Frequency method: Pluck the belt span and measure the vibration frequency with a sensor or app. Use T = 4 × m × L² × f².
- Direct measurement: Use a dedicated belt tension gauge (e.g., Gates Krikit, Optibelt TT) to read the tension directly.
The frequency method is generally more accurate and repeatable. It eliminates human error in force application and deflection measurement. It is especially preferred for timing belts where precise tension is critical.
The deflection method is simpler and requires only a ruler and a spring scale. It is adequate for V-belts and general industrial use.
Too loose: Belt slipping, squealing noise, heat generation, premature wear, reduced power transmission efficiency, and inconsistent speed.
Too tight: Excessive bearing loads, premature bearing failure, shaft deflection, belt fatigue and cracking, increased energy consumption.
Recommended schedule:
- After installation: Check after first 24–48 hours (initial stretch)
- Routine: Every 3–6 months during scheduled maintenance
- After events: After any drive modification, motor replacement, or unusual vibration/noise
Keep a log of tension readings to track belt condition over time.
Yes. New belts undergo significant initial stretch during the first hours of operation. Best practice:
- Tension new belts 20–30% above the nominal target value
- Run the drive for 24–48 hours
- Re-tension to the normal operating value
- Check again after one week of operation
Used belts that have already stabilized can be tensioned directly to the nominal value.
Prosedur yang diterangkan pada halaman ini telah dibangunkan dan diuji di lapangan oleh pasukan Vibromera menggunakan Balanset-1A, iaitu pengimbang dua saluran mudah alih dan penganalisis getaran untuk pengimbangan rotor di tapak.
Instrumen dan perisian pengimbangan di tapak profesional. Pemantauan getaran untuk peralatan pacuan tali sawat. Digunakan di lebih 50 buah negara.
