Rubber bearing structure based on piezoelectric effect and power generating system thereof

Abstract

The invention relates to a rubber bearing structure based on the piezoelectric effect and a power generating system thereof; the rubber bearing structure comprises a bottom rubber layer; a reinforcing plate is arranged on the bottom rubber layer, and provided with a plurality of piezoelectric plates connected in parallel; a top rubber layer is arranged on the piezoelectric plates; the rubber bearing structure is arranged between a box girder and a pier of a bridge, and connected with a storage battery, thus powering up power devices on the bridge through a bridge power supply circuit. The rubber bearing structure can obtain large amplitudes along with bridge vibrations, thus giving large stress change amplitudes on the inner piezoelectric plates, ensuring piezoelectric plate deformation frequency level, improving power generating capacity and efficiency, and improving energy conversion efficiency; the power generating system is combined with the rubber bearing structure, so the installation and maintenance are easy; compared with large area installation and paving in the prior art, the rubber bearing structure and the power generating system are easy to construct, low in cost, and high in practical value.

Description

technical field [0001] The invention relates to the technical field of piezoelectric ceramic power generation and electric energy collection, in particular to a piezoelectric effect-based rubber bearing structure and a power generation system thereof. Background technique [0002] Studies have shown that when pressure or tension is applied to the ceramic sheet, charges with opposite polarities will be generated at both ends of the ceramic sheet, and a current will be formed through the loop. This effect is called the piezoelectric effect. Ceramics with this property are called piezoelectric ceramics, and the density of surface charges is proportional to the mechanical stress. Using this characteristic of piezoelectric ceramics, people have developed a variety of devices that convert mechanical properties into electrical energy: [0003] (1) Walking piezoelectric power generation [0004] People waste some mechanical properties in the process of exercising, so there are man...

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Problems solved by technology

[0011] In order to solve the problem of laying ceramic piezoelectric devices on bridges in a large area in the prior art, the present invention provides a rubber bearing structure based on the piezoelectric effect, which can obtain a larger amplitude with the vibration of the bridge , so as to give the internal piezoelectric sheet a large stress variation range, and at the same time ensure the frequency of deformation of the piezoelectric sheet, improve the power generation and power generation efficiency, improve the energy conversion efficiency, and do not need to be laid on the bridge in a large area

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