Dry friction variable damping vibration attenuation device

• Main Authors: TAN JIANPING, WANG RUOFENG, SANG YANWEI, GUO BIN, HUANG ZHONGHE, HUANG SHUO
• Format: Patent
• Language: Chinese; English
• Published: 30.11.2021
• Subjects: BEARINGS; BLASTING; ELEMENTS OR CRANKSHAFT MECHANISMS; ENGINEERING ELEMENTS AND UNITS; FLEXIBLE SHAFTS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MEANS FOR DAMPING VIBRATION; MECHANICAL ENGINEERING; ROTARY BODIES OTHER THAN GEARING ELEMENTS; SHAFTS; SHOCK-ABSORBERS; SPRINGS; THERMAL INSULATION IN GENERAL; WEAPONS

The invention discloses a dry friction variable damping vibration attenuation device which comprises a clamping cover and a base. Fixed damping rings, movable damping rings, flange seats and reset springs are arranged in the clamping cover and the base; the fixed damping rings are fixedly arranged on the two sides of the inner wall of the clamping cover and the two sides of the inner wall of the base; the movable damping rings are arranged close to the fixed damping rings; the flange seats are arranged between the movable damping rings; one reset spring is arranged in a clamping position between each movable damping ring and the corresponding flange seat; the two ends of each reset spring are fixedly connected with the corresponding movable damping ring and the corresponding flange seat respectively; the initial state of each reset spring is a pre-stretching state; a piezoelectric actuator is arranged in each flange seat; and a pair of bearings and shaft sleeves are arranged among the movable damping rings, t