Friction energy recovery vibration absorber with inner and outer double-layer vibration absorption structure

Abstract

The invention provides a friction energy recovery vibration absorber with an inner and outer double-layer vibration absorption structure. The friction energy recovery vibration absorber comprises theinner-layer vibration absorption structure, the outer-layer vibration absorption structure, an inner-layer damping adjustment and energy conversion device and an outer-layer damping adjustment and energy conversion device, wherein the inner-layer vibration absorption structure comprises a mass block (5), an inner-layer guide column (7), an inner-layer vibration absorption spring (12) and an inner-layer insulating shell (14), the inner-layer damping adjustment and energy conversion device comprises inner-layer electrode metal (4) and an inner-layer dielectric plate (6), the outer-layer vibration absorption structure comprises an outer-layer guide column (3), an outer-layer vibration absorption spring (13) and an outer-layer insulating shell (17), and the outer-layer damping adjustment and energy conversion device comprises outer layer electrode metal (1) and an outer layer dielectric plate (2). According to the friction energy recovery vibration absorber with the inner and outer double-layer vibration absorption structure, through the contact sliding type conductor-dielectric independent layer friction power generation principle, only contact and friction exist between a dielectricand a metal electrode, collision among materials is avoided, and secondary vibration damage is avoided.

Description

technical field [0001] The invention relates to the field of vibration control, in particular to a frictional energy recovery shock absorber with inner and outer double-layer shock absorbing structures. Background technique [0002] The principle of the dynamic vibration absorber is to add a mass spring resonance system to the vibrating object to transfer the system resonance from the controlled system to the vibration absorber structure. According to the damping characteristics, it can be divided into two types: no damping and damping. In order to better control the vibration amplitude of the new resonance frequency due to the addition of the vibration absorber, the current vibration absorber is often of the damped type. Due to the different damping structures, it can be viscous damping, frictional damping, structural damping and so on. [0003] In the invention patent titled "An Electromagnetic Two-DOF Semi-Active Vibration Absorber" (application number: CN201010209160.9...

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Problems solved by technology

[0006] In the invention patent titled "A multi-directional broadband energy harvesting device based on vibration friction" (application number: CN201410696021.1), it also uses a multi-degree-of-freedom vibration-absorbing structure, although it can absorb multiple Vibration in one direction and collect vibration energy, but there is no fixed constraint in the direction perpendicular to the device, and it is easy to cause secondary vibration hazards under external force excitation

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