CN104218848A - Self-adaptive piezoelectric generation cantilever beam - Google Patents
Self-adaptive piezoelectric generation cantilever beam Download PDFInfo
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- CN104218848A CN104218848A CN201410530916.8A CN201410530916A CN104218848A CN 104218848 A CN104218848 A CN 104218848A CN 201410530916 A CN201410530916 A CN 201410530916A CN 104218848 A CN104218848 A CN 104218848A
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Abstract
The invention relates to a self-adaptive piezoelectric generation cantilever beam. The self-adaptive piezoelectric generation cantilever beam comprises a piezoelectric vibrator (1), a free end mass block (2), a curved-surface fixed support end (3), an installation gasket (4) and a bolt (5), wherein the free end mass block (2) is arranged at one end of the piezoelectric vibrator (1), and the other end of the piezoelectric vibrator (1) is fixed on the curved-surface fixed support end (3), and fixed through the installation gasket (4) and by the bolt (5); the curved-surface fixed support end (3) is provided with a vibrator installation surface (31) and a variable support curved surface (32) adjacent to the vibrator installation surface (31); the vibrator installation surface (31) and the variable support curved surface (32) adjacent to the vibrator installation surface (31) are vertical to the side surface adjacent to the both. A system is installed on a rotation device and used as a generation device, and capable of realizing the self-adaptive changes of an inherent frequency according to a rotation speed, thus the inherent frequency bandwidth of a generation device is increased, and a generation amount is increased.
Description
Technical field
The invention belongs to small-power power field, be specifically related to a kind of self adaptation piezo-electric generating cantilever beam.
Background technology
Since piezoelectric is found, be widely used in the Blast Furnace Top Gas Recovery Turbine Unit (TRT) of specific occasion, the strain testing device that the character that to comprise with it be electric energy by stress conversion forms, directly with clashing into piezoelectric, produced all kinds of ignition devices and electronic fuse device that transient high voltage forms, utilize the formed electronic power device of piezoelectric cantilever beam deflection generating all kinds of electronic devices of supply that piezoelectric ceramic forms etc.And Piezoelectric Cantilever Beams is as the simplest a kind of piezo-electric generating structure, research widely and application have been obtained, piezoelectric cantilever has two kinds of operating states for generating, a kind of is to be operated under off-resonance frequency, distortion by its stressed generation causes that piezoelectric ceramic produces stress and strain and forms generating capacity in conjunction with piezoelectric effect, another is to be operated under its resonance frequency, the efficiency that now mechanical energy is converted into electric energy significantly improves, but dynamic excitation changes constantly under some special occasions, be not easy to realize piezoelectric cantilever works under resonance state.Doing, the piezoelectric cantilever stressing conditions of installing on the device of gyration is more special, can by the design of special construction, make the natural frequency of piezoelectric cantilever change, adapt to extraneous gyration, the efficiency of such piezoelectric cantilever generators has obvious room for promotion.
Summary of the invention
Constant in order to solve the piezoelectric cantilever generators natural frequency being arranged at present on rotating mechanism, cannot under the moving condition changing, keep cantilever beam system in resonance state, the low problem of caused generating efficiency thus, a kind of self adaptation piezo-electric generating cantilever beam structure has been proposed, this piezoelectric cantilever is by piezoelectric vibrator, free end mass and curved surface fixed support end form, the curved surface fixed support end of described self adaptation piezo-electric generating cantilever beam structure is fixed in the mechanism of doing gyration, utilize gyration generating, when velocity of rotation changes, whole rigidity changes under the effect of curved surface fixed support end, the resonance frequency of system changes thereupon makes it to have wider resonance frequency scope, can promote piezo-electric generating efficiency.
To achieve these goals, the present invention is by the following technical solutions:
A kind of self adaptation piezo-electric generating of the present invention cantilever beam, comprises piezoelectric vibrator, free end mass, curved surface fixed support end, pad and bolt is installed, wherein:
Piezoelectric vibrator one end is furnished with free end mass, and the other end is fixed on curved surface fixed support end, by pad is installed, is bolted; Described curved surface fixed support end have oscillator installed surface and with it adjacent change support curved surface; Described oscillator installed surface and with it adjacent change are supported curved surface jointly perpendicular to the side surface adjacent with the two.
Described piezoelectric vibrator can adopt by a slice piezoelectric sheet material and stick on the single-chip piezoelectric vibrator forming on elastic base plate, also can adopt by two piezoelectric sheet materials and stick on the twin lamella piezoelectric vibrator that elastic base plate both sides form.
During use, piezoelectric vibrator is arranged vertically in the direction radially vertical with gyration, curved surface fixed support end is arranged in away from the centre of gyration one side simultaneously.During work, increase along with gyration speed, dynamic excitation frequency rises, while is in the effect lower piezoelectric oscillator generation strain of centrifugal force, supporting curved surface with the change on described curved surface fixed support end contacts, after contact occurs, the jib-length of piezoelectric vibrator reduces, rigidity increases, and the resonance frequency of system rises, and the natural frequency that has realized thus power facility is along with the variation of gyration cycle and frequency realizes the object of self adaptation adjustment.
Accompanying drawing explanation
Fig. 1 is a kind of self adaptation piezo-electric generating of the present invention cantilever beam structure schematic diagram.
Fig. 2 is the schematic diagram of each part of the present invention and the relation of installation.
Embodiment
See figures.1.and.2, self adaptation piezo-electric generating cantilever beam of the present invention is to consist of piezoelectric vibrator 1, free end mass 2, curved surface fixed support end 3, installation pad 4 and bolt 5, wherein:
Piezoelectric vibrator 1 one end is connected with free end mass 2 by bonding way, and the other end is fixed on curved surface fixed support end 3, fixing by the first bolt 51 and the second bolt 52 by pad 4 is installed; Described curved surface fixed support end 3 have oscillator installed surface 31 and with it adjacent change support curved surface 32; It is common perpendicular to the side surface adjacent with the two that curved surface 32 is supported in described oscillator installed surface 31 and change.
Described piezoelectric vibrator 1 adopts and sticks on by a slice piezoelectric sheet material 11 the single-chip piezoelectric vibrator forming on elastic base plate 12.
On described curved surface fixed support end 3, be furnished with the first support threaded mounting hole 33 and second and support threaded mounting hole 34; On described piezoelectric vibrator 1, be furnished with the first oscillator installing hole 13 and the second oscillator installing hole 14; On described installation pad 4, be furnished with the first pad installing hole 41 and the second pad installing hole 42; Described the first bolt 51 is fastened on the first support threaded mounting hole 33 after by the first pad installing hole 41 and the first oscillator installing hole 13, the second bolt 52, to be fastened on the second support threaded mounting hole 34 with the same order of the first bolt 51, completes the Standard of self adaptation piezo-electric generating cantilever beam.
During use, piezoelectric vibrator 1 is arranged vertically in the direction radially vertical with gyration, curved surface fixed support end 3 is arranged in away from the centre of gyration one side simultaneously.
Claims (2)
1. a self adaptation piezo-electric generating cantilever beam, comprise: piezoelectric vibrator (1), free end mass (2), curved surface fixed support end (3), installation pad (4) and bolt (5), wherein: described piezoelectric vibrator (1) one end is furnished with free end mass (2), it is upper that the other end is fixed on curved surface fixed support end (3), fixing by bolt (5) by pad (4) is installed; Described curved surface fixed support end (3) have oscillator installed surface (31) and with it adjacent change support curved surface (32); It is common perpendicular to the side surface adjacent with the two that curved surface (32) is supported in described oscillator installed surface (31) and change.
2. self adaptation piezo-electric generating cantilever beam according to claim 1, it is characterized in that: described piezoelectric vibrator (1) adopts by a slice piezoelectric sheet material (11) and sticks on the upper single-chip piezoelectric vibrator forming of elastic base plate (12), or adopts piezoelectric sheet material (11) to stick on the twin lamella piezoelectric vibrator that elastic base plate (12) both sides form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410530916.8A CN104218848A (en) | 2014-10-09 | 2014-10-09 | Self-adaptive piezoelectric generation cantilever beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410530916.8A CN104218848A (en) | 2014-10-09 | 2014-10-09 | Self-adaptive piezoelectric generation cantilever beam |
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| Publication Number | Publication Date |
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| CN104218848A true CN104218848A (en) | 2014-12-17 |
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| CN201410530916.8A Pending CN104218848A (en) | 2014-10-09 | 2014-10-09 | Self-adaptive piezoelectric generation cantilever beam |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104485850A (en) * | 2015-01-07 | 2015-04-01 | 浙江师范大学 | Piezoelectric generator excited by human motion |
| CN104814586A (en) * | 2015-04-16 | 2015-08-05 | 深圳市淘淘谷信息技术有限公司 | Trackable wallet |
| CN106374777A (en) * | 2016-09-27 | 2017-02-01 | 安徽大学 | S-shaped piezoelectric cantilever beam vibration energy collector |
| CN106385198A (en) * | 2016-09-27 | 2017-02-08 | 安徽大学 | Wireless temperature measuring device with self-powered S-shaped piezoelectric cantilever beam |
| CN108988684A (en) * | 2018-07-16 | 2018-12-11 | 哈尔滨工程大学 | A kind of absorbing and vibrational energy acquire integrated apparatus |
| CN110912449A (en) * | 2019-05-18 | 2020-03-24 | 浙江师范大学 | Piezoelectric type tunnel airflow generator |
| CN111637319A (en) * | 2020-04-23 | 2020-09-08 | 湖北文理学院 | Energy-saving noise-reducing household appliance base |
| CN114244185A (en) * | 2021-11-02 | 2022-03-25 | 上海工程技术大学 | Circular plate type vibration energy collector based on MFC |
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| CN102790550A (en) * | 2012-09-01 | 2012-11-21 | 浙江师范大学 | Power generation device following up spindle of propeller |
| CN103840710A (en) * | 2014-03-10 | 2014-06-04 | 中国科学院微电子研究所 | Vibration energy collector |
| CN104092407A (en) * | 2014-08-06 | 2014-10-08 | 苏州科技学院 | Equal-deformation cantilever lever type piezoelectric power generation component |
| CN204119085U (en) * | 2014-10-09 | 2015-01-21 | 吉林大学 | A kind of self adaptation piezo-electric generating cantilever beam |
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2014
- 2014-10-09 CN CN201410530916.8A patent/CN104218848A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102790550A (en) * | 2012-09-01 | 2012-11-21 | 浙江师范大学 | Power generation device following up spindle of propeller |
| CN103840710A (en) * | 2014-03-10 | 2014-06-04 | 中国科学院微电子研究所 | Vibration energy collector |
| CN104092407A (en) * | 2014-08-06 | 2014-10-08 | 苏州科技学院 | Equal-deformation cantilever lever type piezoelectric power generation component |
| CN204119085U (en) * | 2014-10-09 | 2015-01-21 | 吉林大学 | A kind of self adaptation piezo-electric generating cantilever beam |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104485850A (en) * | 2015-01-07 | 2015-04-01 | 浙江师范大学 | Piezoelectric generator excited by human motion |
| CN104485850B (en) * | 2015-01-07 | 2017-01-25 | 浙江师范大学 | Piezoelectric generator excited by human motion |
| CN104814586A (en) * | 2015-04-16 | 2015-08-05 | 深圳市淘淘谷信息技术有限公司 | Trackable wallet |
| CN106374777A (en) * | 2016-09-27 | 2017-02-01 | 安徽大学 | S-shaped piezoelectric cantilever beam vibration energy collector |
| CN106385198A (en) * | 2016-09-27 | 2017-02-08 | 安徽大学 | Wireless temperature measuring device with self-powered S-shaped piezoelectric cantilever beam |
| CN106385198B (en) * | 2016-09-27 | 2018-05-29 | 合肥磐石自动化科技有限公司 | A kind of wireless temperature measuring device of S-shaped piezoelectric cantilever self energizing |
| CN108988684A (en) * | 2018-07-16 | 2018-12-11 | 哈尔滨工程大学 | A kind of absorbing and vibrational energy acquire integrated apparatus |
| CN110912449A (en) * | 2019-05-18 | 2020-03-24 | 浙江师范大学 | Piezoelectric type tunnel airflow generator |
| CN110912449B (en) * | 2019-05-18 | 2022-02-25 | 浙江师范大学 | Piezoelectric type tunnel airflow generator |
| CN111637319A (en) * | 2020-04-23 | 2020-09-08 | 湖北文理学院 | Energy-saving noise-reducing household appliance base |
| CN111637319B (en) * | 2020-04-23 | 2022-10-25 | 湖北文理学院 | Energy-saving noise-reducing household appliance base |
| CN114244185A (en) * | 2021-11-02 | 2022-03-25 | 上海工程技术大学 | Circular plate type vibration energy collector based on MFC |
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Application publication date: 20141217 |