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皮帶張力計算器
使用撓度法、頻率法或直接力值測量來計算適當的皮帶張力。支援 V 型皮帶、同步皮帶與平皮帶。
結果
撓度法
撓度法透過在皮帶跨距中點施加已知的垂直力，並測量產生的撓度，來測量皮帶張力。
- T — 靜態皮帶張力 (N)
- F — 施加的撓度力 (N)
- L — 自由跨距長度 (mm)
- d — 中點測量的撓度 (mm)
頻率法
頻率法利用皮帶跨距的自然振動頻率。此方法更為精確且可重複性高，特別適用於同步皮帶。
- T — 皮帶張力 (N)
- m — 皮帶單位長度質量 (kg/m)
- L — 自由跨距長度 (m)
- f — 測量的自然頻率 (Hz)
建議張力範圍
| 皮帶類型 | 每條皮帶張力 (N) | 撓度指南 |
|---|---|---|
| V 型皮帶 SPZ | 150 – 350 | 每 100 mm 跨距 1.6 mm |
| V 型皮帶 SPA | 200 – 500 | 每 100 mm 跨距 1.6 mm |
| V 型皮帶 SPB | 300 – 700 | 每 100 mm 跨距 1.6 mm |
| V 型皮帶 SPC | 500 – 1200 | 每 100 mm 跨距 1.6 mm |
| 同步皮帶 (HTD) | 依製造商規格 | 建議使用頻率法 |
| 平皮帶 | 200 – 1000 | 依寬度而異 |
實務範例
已知： 跨距 L = 1500 mm，力 F = 20 N，撓度 d = 5 mm
T = (20 × 1500) / (4 × 5) = 30000 / 20 = 1500 N 每根皮帶
已知： 質量 m = 1.2 kg/m，跨距 L = 0.5 m，頻率 f = 45 Hz
T = 4 × 1.2 × 0.5² × 45² = 4 × 1.2 × 0.25 × 2025 = 2430 N
⚠️ 注意： 新皮帶的張力應比標稱值高 20–30%，以補償初始伸長。運轉 24–48 小時後應重新調整張力。
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.
本頁所述的操作流程由 Vibromera 團隊使用 Balanset-1A（一款用於現場轉子平衡的便攜式雙通道動平衡儀及振動分析儀）開發並經過實地測試。
專業現場動平衡儀器與軟體。皮帶驅動設備的振動監測。應用於 50 多個國家。
