Traditional vibrating wire strain gauge calibration devices generally use manual or low-power motor drives as the driving force,making it difficult to meet the calibration requirements of vibrating wire strain gauges that require large measurement forces.To address this issue,a hydraulic-driven vibrating wire strain gauge calibration device has been designed and developed.The calibration device can be adjusted within a range of 50-200 mm,and a universal fixture has been designed to achieve clamping and fastening of vibrating wire strain gauges of different sizes,models,and shapes.The device features a compact structure and convenient,labor-saving operation.It has been verified that the hydraulic drive greatly reduces the force required for calibration,while the calibration results remain consistent with traditional strain gauge measurement data.The experimental measurement uncertainty U=0.6％(k=2)is less than 0.7％,meeting the calibration specification requirements.
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