Alat Kejuruteraan Percuma
Kalkulator Reka Bentuk Platform Mengimbangi
Reka bentuk platform pengimbangan (sokongan lembut) untuk pengimbangan rotor medan. Kirakan kekakuan spring, frekuensi semula jadi, pesongan statik dan kebolehtransmisian yang diperlukan.
Keputusan
Frekuensi Semula Jadi Platform
Frekuensi semula jadi sistem spring jisim platform:
Di mana mjumlah = mpemutar + mplatform dan kjumlah ialah kekakuan gabungan semua spring (N/m).
Kekakuan yang Diperlukan setiap Musim Bunga
Di mana n ialah bilangan spring dan fsasaran = RPM/60 × nisbah (cth. ×1/3).
Kebolehtularan
Kebolehterimaan tanpa redam pada kelajuan operasi:
Untuk keadaan pengimbangan yang baik, T hendaklah kurang daripada 15%. Nisbah frekuensi 3 memberikan T ≈ 12.5%.
Pesongan Statik
Contoh Praktikal
Diberi: mpemutar = 80 kg, mplatform = 15 kg, 1800 RPM, 4 spring, nisbah 1/3
mjumlah = 95 kg, fterbuka = 30 Hz, fsasaran = 10 Hz
kjumlah = 95 × (2π×10)² = 375,055 N/m = 375.1 N/mm
ksetiap musim bunga = 375.1 / 4 = 93.8 N/mm
δstatik = 95×9.81 / 375,055 × 1000 = 2.49 mm
T = 1/(3²−1) = 12.5%
⚠️ Nota: Pastikan semua spring mempunyai kekakuan yang sama dan beban berada di tengah. Pesongan yang tidak sama menyebabkan kecondongan, yang mengganggu bacaan getaran semasa pengimbangan.
A balancing platform (soft support) is a simple structure — typically a steel frame or plate — mounted on springs. It supports a rotor for field balancing by allowing free vibration response at operating speed. The platform's natural frequency is tuned well below operating speed (typically ≤ 1/3).
The natural frequency must be well below operating speed to ensure the system operates in the isolation region — above the resonance peak. At a frequency ratio of 3, transmissibility drops to about 12.5%, meaning the rotor vibrates freely and the balancing instrument can accurately detect unbalance.
Common configurations:
- 4 springs — most common, one at each corner
- 2 springs — small, lightweight rotors
- 3 springs — triangular platforms
- 6–8 springs — large, heavy rotors
All springs must have equal stiffness and the load must be centered.
Welded steel frame or plate (10–20 mm thick) is most common. Aluminum for smaller rotors. Platform mass is typically 10–25% of rotor mass. Ensure the platform is flat and all spring mounting points are at equal height.
Yes, but rubber mounts have higher damping (reducing measurement precision), and stiffness varies with temperature and load history. Coil springs are preferred for their consistent, well-defined stiffness and low damping. Dynamic rubber stiffness is typically 1.3–2× higher than static stiffness.
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. Reka bentuk platform pengimbangan anda dan sahkan hasil dengan pengimbang mudah alih kami. Digunakan di lebih 50 buah negara.
