Vibration isolation device for combining high and low frequency vibration

Abstract

The invention provides a vibration isolation device for combining high and low frequency vibration. The vibration isolation device is composed of a base, a concave support table, a fixed bottom plate, a frame, a vertical stiffness-damping mechanism, a locking clamp, a horizontal stiffness-damping mechanism, a movable hinging chain seat, a guide rod and a straight line bearing. A realization device of nonlinear stiffness and nonlinear damping is provided based on special vibration isolation performances of the nonlinear stiffness and the nonlinear damping. A stiffness-damping mechanism comprised by the realization device has low dynamic stiffness to enlarge vibration isolation band and has high static stiffness to ensure that static deformation is small and does not lose stability; and the realization device also uses nonlinear damping to together suppresses the height of formant, and while reducing the height of the formant, the formant is moved left to broaden the vibration isolation frequency band and to suppress the transmission rate at high frequencies.

Description

technical field [0001] The invention relates to the technical field of vibration isolation devices, in particular to a vibration isolation device that takes into account both high and low frequency vibrations. Background technique [0002] Vibration isolation technology has been widely used in all walks of life in the industry, such as vehicles, ships, and precision machining fields. In order to improve the vibration reduction effect, the industry has been pursuing low-frequency or ultra-low-frequency vibration isolation components. In the field of low-frequency vibration reduction, passive vibration isolation, active and semi-active vibration isolation technologies are widely used at present. Active and semi-active vibration reduction have the disadvantages of needing external energy input and the system is more complicated. In contrast, the passive vibration isolation structure composed of spring damping is simple, does not require external energy, and has considerable e...

AI Technical Summary

Problems solved by technology

Therefore, the traditional passive vibration isolation technology always has the problem of trade-off between dynamic stiffness and static deformation.

In addition, the traditional passive vibration isolation technology is not effective for vibration isolation in the resonance area

Although linear damping can control the response at the resonance frequency, it will also reduce the vibration isolation efficiency of the vibration isolation area, so engineers and scientists began to study the impact of adding nonlinear damping on the vibration isolation performance

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