FIELD: transport engineering. SUBSTANCE: forced vibration frequency of equipment under protection is measured and signal is formed inversely proportional in value to difference in squares of forced vibration frequency and natural vibration frequency of protected equipment, then, starting from a certain threshold value and proportionally to signal indicated above, rigidity of shock absorber resilient member is changed: when forced vibration frequency rises, rigidity is reduced, and vice versa. This protects equipment from resonance vibrations within wide frequency range. EFFECT: enhanced reliability of vibration protection. 1 dwg
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