| Component | Function | |-----------|----------| | | Two counter-rotating eccentric masses generate horizontal (side-to-side) oscillations at 30–35 Hz. | | Vertical load system | Hydraulic cylinders apply a static downward force (typically 50–120 kN per rail). | | Measuring wheels | Monitor track settlement (Δh) and vibration amplitude. | | Control computer | Regulates frequency, amplitude, and load to match ballast conditions. |
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