Vibration isolation and damping device

Abstract

The invention discloses a vibration isolation and damping device, and relates to the technical field of vibration control. The vibration isolation and damping device comprises a base, a load bearing structure, a quasi-zero stiffness device, a damper, and a fluid inertial container; the load bearing structure is movably installed on the base along the vertical direction; one end of the quasi-zero stiffness device is connected with the base and the other end is connected with the load bearing structure; the damper is arranged on the base; the fluid inertial container comprises a piston rod whichextends in the vertical direction; the upper end of the piston rod is movably connected with the load bearing structure; the lower end of the piston rod is movably connected with the damper; and thequasi-zero stiffness device comprises a dish-shaped spring pair. While the inherent frequency of the vibration and damping device is lowered, mechanical vibration can be effectively reduced and kinetic energy can be effectively consumed, so in an effective vibration isolation and damping frequency band, the vibration isolation and damping device can better adapt to changes of load bearing conditions and has good vibration isolation and damping effect on low-, medium-, and high-frequency vibration, especially high-frequency vibration excitation.

Description

technical field [0001] The invention relates to the technical field of vibration control, in particular to a vibration isolation and damping device. Background technique [0002] Vibration is considered a negative factor in many cases. For example, vibration will affect the function of precision instruments and equipment, reduce the processing accuracy and finish, and aggravate the fatigue and wear of components, thereby shortening the service life of machines and structures. Vibration may also cause large deformation and damage to structures. Some bridges have suffered from vibration The flutter of aircraft wings and the buffeting of wheels often cause accidents; the vibration of vehicles, ships and cabins will deteriorate the loading conditions; strong vibration and noise will cause serious public nuisance. [0003] Regarding vibration isolation and reduction, in recent years, two new types of passive vibration isolation devices have attracted great attention in the acade...

AI Technical Summary

Problems solved by technology

However, the vibration isolation system that only includes the inerter is prone to the defect that the isolation and attenuation effect on high-frequency vibration excitation is not good

Images