A frictional energy recovery shock absorber with inner and outer double-layer shock-absorbing structures

Abstract

The invention provides a frictional energy recovery shock absorber with an inner and outer double-layer shock-absorbing structure, which includes an inner-layer shock-absorbing structure, an outer-layer shock-absorbing structure, an inner-layer damping adjustment and energy conversion device, an outer-layer damping adjustment and energy conversion device; The vibration-absorbing structure includes a mass block (5), an inner-layer guide post (7), an inner-layer vibration-absorbing spring (12), and an inner-layer insulating shell (14); the inner-layer damping adjustment and energy conversion device includes an inner-layer electrode metal (4) , the inner layer dielectric plate (6), the outer layer vibration-absorbing structure includes the outer layer guide post (3), the outer layer vibration-absorbing spring (13), the outer layer insulating shell (17); the outer layer damping adjustment and energy conversion device includes the outer layer electrode Metal (1), outer layer dielectric plate (2), the present invention adopts the principle of triboelectric power generation of the conductor-dielectric independent layer of the contact sliding type, only contact and friction exist between the dielectric and the metal electrode, and the collision between materials is avoided. There is no danger of secondary vibration.

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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