CN208479493U - A kind of wideband vibration damping energy-collecting device of more piezoelectric cantilevers - Google Patents
A kind of wideband vibration damping energy-collecting device of more piezoelectric cantilevers Download PDFInfo
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- CN208479493U CN208479493U CN201820767261.XU CN201820767261U CN208479493U CN 208479493 U CN208479493 U CN 208479493U CN 201820767261 U CN201820767261 U CN 201820767261U CN 208479493 U CN208479493 U CN 208479493U
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- vibration damping
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Abstract
The utility model discloses a kind of wideband vibration damping energy-collecting devices of more piezoelectric cantilevers, it belongs to vibrational energy capture technical field, including bracket, described bracket one end is equipped with fastening bolt, the bracket other end is equipped with several equally distributed clip slots, freely slidable piezoelectricity collection device is equipped in the clip slot, the piezoelectricity collection device includes pressing plate, the pressing plate is equipped with several piezoelectric cantilevers being parallel to each other, one end on the adjacent piezoelectric cantilever on the same pressing plate far from the pressing plate is equipped with elastic metallic yarn far from one end of the pressing plate with the piezoelectric cantilever of the same position in the adjacent clip slot and is connected；The piezoelectric cantilever includes substrate, and the substrate is equipped with piezoelectric patches, and described substrate one end is fixedly mounted on the pressing plate, and the substrate other end is equipped with the mass block being fixedly mounted.
Description
Technical field
The present invention relates to vibration energy to capture technical field, and in particular to a kind of wideband vibration damping collection energy of more piezoelectric cantilevers
Device.
Background technique
In the past ten years, the power that microelectronic component consumes at runtime is smaller and smaller, and then domestic and international expert opens
Begin research energy harvester, it can collect ambient environment vibrations energy to realize microelectronic component self energizing, for example tsunami is pre-
Security diagnostics sensor in alert sensor, bridge and building structure, these microelectronic components are usually powered using traditional battery,
But traditional chemical cell it is short, volume is big there are the service life the problems such as, and energy harvester has that the service life is long, small in size, energy
The advantages that density is high, alternative conventional batteries are microelectronic component power supply.The mode for converting vibrational energy into electric energy generally has
Electromagnetic type, piezoelectric type and electrostatic three types, relative to electrostatic and electromagnetic type, piezoelectric type vibration energy harvester has knot
The advantages that structure is simple, energy conversion efficiency is high receives more and more extensive attention.
The design of piezoelectric cantilever boom device at present is mostly collection of energy structure and piezoelectric transducer application, mainly adjusts piezoelectricity
The relationship of cantilever beam structure parameter and cantilever beam output voltage does not introduce the band gap properties of phonon crystal theory, to elastic wave
Band gap reduces amplitude and the effect of noise transmission is stopped not applied, and what piezoelectricity energy-collecting device was focused on is vibration energy harvesting effect
Rate, existing major part device do not widen the bandwidth of operation of piezoelectric vibration, more just for the collection of energy of various vibration modes
Vibrational energy in more low frequencies is converted to thermal energy waste, at the same Piezoelectric Cantilever Beams to vibration and noise reducing using less, only
It is simple collection of energy.
Summary of the invention
For the problems of in the prior art, a kind of wideband vibration damping collection energy of more piezoelectric cantilevers provided by the invention
Device can effectively improve vibration energy harvesting efficiency, realize apparent vibration and noise reducing effect.
To achieve the goals above, The technical solution adopted by the invention is as follows:
A kind of wideband vibration damping energy-collecting device of more piezoelectric cantilevers, including bracket, described bracket one end are equipped with fastening bolt,
The bracket other end is equipped with several equally distributed clip slots, is equipped with freely slidable piezoelectricity collection device in the clip slot,
The piezoelectricity collection device includes pressing plate, and the pressing plate is equipped with several piezoelectric cantilevers being parallel to each other, the same pressing plate
On the adjacent piezoelectric cantilever on far from the pressing plate one end and the adjacent clip slot in same position the pressure
Electric cantilever beam is equipped with elastic metallic yarn far from one end of the pressing plate and is connected；
The piezoelectric cantilever includes substrate, and the substrate is equipped with piezoelectric patches, and described substrate one end is fixedly mounted on institute
It states on pressing plate, the substrate other end is equipped with the mass block being fixedly mounted.
Preferably, the pressing plate is equipped with groove and through slot, the through slot perpendicular to the groove, the through slot with it is described
Groove is connected, and several sliding shoes that can move freely are equipped in the groove, are threaded with knob on the sliding shoe, institute
State groove be located on the pressing plate far from the clip slot side, the substrate grafting in the groove, the substrate and institute
Knob is stated to match.
Preferably, the distance between described piezoelectric cantilever adjacent in the same clip slot is less than the length of the substrate
Degree.
Preferably, the length of the difference substrate on the same pressing plate is all the same, and thickness is different, the different folders
The intrinsic frequency of the piezoelectricity collection device in slot is different.
Preferably, on the bracket at least provided with two clip slots, at least provided with a substrate, the substrate on the clip slot
It is equipped with two pieces of piezoelectric patches.
Beneficial effects of the present invention are shown:
1, the design of piezoelectric cantilever and mass block Multi-layers distributing is used in the present invention, by adjusting the number of piezoelectric cantilever
Mesh simultaneously arranges piezoelectric cantilever according to certain sequence, to change the intrinsic frequency of the present apparatus, realizes piezoelectricity collection energy function, makes
Piezoelectricity collection more efficiently can design the collection of energy to single features frequency instead of existing most of piezoelectricity collection；In piezoelectricity
Realize that vibration and noise reducing function, more forbidden bands that more cantilever beam structures and main system are formed when resonating reduce while collection energy
The main vibration wave of main system reduces the noise of its generation, maintains low noise, the low vibration green ring of machinery production needs
Border；
2, by the piezoelectricity collection device of different frequency in the present invention, and with different-thickness in each piezoelectricity collection device
Substrate matches, and has effectively widened the resonant frequency bandwidth of piezoelectric type cantilever beam, realizes broadband piezoelectric vibration energy harvesting.
Detailed description of the invention
Fig. 1 is a kind of overall structure diagram of the wideband vibration damping energy-collecting device of more piezoelectric cantilevers of the present invention；
Fig. 2 is a kind of structural schematic diagram of the pressing plate of the wideband vibration damping energy-collecting device of more piezoelectric cantilevers of the present invention.
In figure: 1- bracket, 2- fastening bolt, 3- clip slot, 4- pressing plate, 5- elastic metallic yarn, 6- substrate, 7- piezoelectric patches, 8-
Mass block, 9- groove, 10- through slot, 11- sliding shoe, 12- knob.
Specific embodiment
In order to facilitate the understanding of those skilled in the art, the present invention will be further described below with reference to the drawings.
A kind of wideband vibration damping energy-collecting device of more piezoelectric cantilevers as shown in Figs. 1-2, including bracket 1, the bracket 1 one
End is equipped with fastening bolt 2, and 1 other end of bracket is equipped with several equally distributed clip slots 3, and being equipped in the clip slot 3 can be free
The piezoelectricity collection device of sliding, the piezoelectricity collection device include pressing plate 4, and the pressing plate 4 is equipped with several pressures being parallel to each other
Electric cantilever beam, one end and the adjacent folder on the adjacent piezoelectric cantilever on the same pressing plate 4 far from the pressing plate 4
The piezoelectric cantilever of same position in slot 3 is equipped with elastic metallic yarn 5 far from one end of the pressing plate 4 and is connected；It is described
Piezoelectric cantilever includes substrate 6, and the substrate 6 is equipped with piezoelectric patches 7, and described 6 one end of substrate is fixedly mounted on the pressing plate 4
On, 6 other end of substrate is equipped with the mass block 8 being fixedly mounted.
The pressing plate 4 is equipped with groove 9 and through slot 10, and the through slot 10 is perpendicular to the groove 9, the through slot 10 and institute
It states groove 9 to be connected, several sliding shoes 11 that can move freely is equipped in the groove 9, are threadedly coupled on the sliding shoe 11
There is knob 12, the groove 9 is located at the side on the pressing plate 4 far from the clip slot 3, and the substrate 6 is plugged on the groove 9
Interior, the substrate 6 is matched with the knob 12；Adjacent the distance between the piezoelectric cantilever in the same clip slot 3
Less than the length of the substrate 6；The length of the difference substrate 6 on the same pressing plate 4 is all the same, and thickness is different, no
It is different with the intrinsic frequency of the piezoelectricity collection device in the clip slot 3；At least provided with two clip slots 3, institute on the bracket 1
It states at least provided with a substrate 6 on clip slot 3, the substrate 6 is equipped with two pieces of piezoelectric patches 7.
When the invention works, by the fastening bolt 2, by the fixed installation of bracket 1, vibration signal is stronger on the master system
Then the pressing plate 4 is mounted in the groove 9 by several positions, then according to main system intrinsic frequency, adjust the pressing plate
The number of the piezoelectric cantilever on 4 and position keep present apparatus intrinsic frequency equal with main system intrinsic frequency or connect
Closely, at the same make group cost apparatus each piezoelectricity collection device intrinsic frequency according to the vibration frequency domain in working environment according to
Certain proportion distribution, main system operate normally when, it may appear that some characteristic frequencies, the substrate 6 follow main system vibrate and on
The characteristic frequency of lower swing, the substrate 6 generates covibration when equal with main system characteristic frequency, each substrate 6
Mutually superimposed, several sections of isolation bandwidths of formation, reduction principal series are realized in the vibration of characteristic frequency by the connection of the elastic metallic yarn 5
System amplitude, consumes the vibrational energy of main system, achievees the effect that vibration and noise reducing, while as main system starts, driving the base
Plate 6 generates vibration, and the vibration of the substrate 6 makes the piezoelectric patches 7 generate electric signal, and electric signal is electricity by external circuit output
Can, the process for converting mechanical energy to electric energy is completed, because within the scope of 7 bending deformation of piezoelectric patches, device vibrates stronger, piezoelectricity
Piece 7 will generate more electric energy, so the characteristic frequency of a certain substrate 6 on the same pressing plate 4 and main system feature
Frequency close to it is equal when generate covibration, the deflection of piezoelectric patches 7 is maximum at this time, and deformation frequencies are most fast, will obtain maximum electricity
Amount output, while the resonance of device and main system will form the frequency band gap of different in width, existing a large amount of low frequencies between band gap
Vibrational energy forms resonance by remaining the described piezoelectric patches 7 being located on same pressing plate 4, produces the bending deformation of the piezoelectric patches 7
Raw charge conversion is collected at electric energy by external circuit, at the same the adjacent substrate 6 on the same pressing plate 4 it
Between connect by elastic metallic yarn 5 between the adjacent substrate 6 of the same position on the adjacent pressing plate 4, both can be with
Enhance the vibration amplitude of each piezoelectric cantilever, and can influence each other to avoid between the adjacent substrate 6, causes institute
State the change of piezoelectric cantilever characteristic frequency.
Above content is only to structure example of the invention and explanation, affiliated those skilled in the art
It makes various modifications or additions to the described embodiments or is substituted in a similar manner, without departing from invention
Structure or beyond the scope defined by this claim, be within the scope of protection of the invention.
Claims (5)
1. a kind of wideband vibration damping energy-collecting device of more piezoelectric cantilevers, characterized in that including bracket, described bracket one end is equipped with tight
Fixing bolt, the bracket other end are equipped with several equally distributed clip slots, receive in the clip slot equipped with freely slidable piezoelectricity
Acquisition means, the piezoelectricity collection device includes pressing plate, and the pressing plate is equipped with several piezoelectric cantilevers being parallel to each other, same institute
State one end on the adjacent piezoelectric cantilever on pressing plate far from the pressing plate and the same position in the adjacent clip slot
The piezoelectric cantilever is equipped with elastic metallic yarn far from one end of the pressing plate and is connected；
The piezoelectric cantilever includes substrate, and the substrate is equipped with piezoelectric patches, and described substrate one end is fixedly mounted on the pressure
On plate, the substrate other end is equipped with the mass block being fixedly mounted.
2. a kind of wideband vibration damping energy-collecting device of more piezoelectric cantilevers according to claim 1, characterized in that the pressing plate
It is equipped with groove and through slot, the through slot is connected with the groove perpendicular to the groove, the through slot, sets in the groove
There are several sliding shoes that can move freely, knob is threaded on the sliding shoe, the groove is located on the pressing plate far
Side from the clip slot, in the groove, the substrate is matched with the knob for the substrate grafting.
3. a kind of wideband vibration damping energy-collecting device of more piezoelectric cantilevers according to claim 1, characterized in that same described
The distance between adjacent described piezoelectric cantilever is less than the length of the substrate in clip slot.
4. a kind of wideband vibration damping energy-collecting device of more piezoelectric cantilevers according to claim 1, characterized in that same described
The length of the difference substrate on pressing plate is all the same, and thickness is different, the piezoelectricity collection device in the different clip slots
Intrinsic frequency it is different.
5. a kind of wideband vibration damping energy-collecting device of more piezoelectric cantilevers according to claim 1, characterized in that the bracket
On at least provided with two clip slots, at least provided with a substrate on the clip slot, the substrate is equipped with two pieces of piezoelectric patches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820767261.XU CN208479493U (en) | 2018-05-09 | 2018-05-09 | A kind of wideband vibration damping energy-collecting device of more piezoelectric cantilevers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820767261.XU CN208479493U (en) | 2018-05-09 | 2018-05-09 | A kind of wideband vibration damping energy-collecting device of more piezoelectric cantilevers |
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| Publication Number | Publication Date |
|---|---|
| CN208479493U true CN208479493U (en) | 2019-02-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820767261.XU Expired - Fee Related CN208479493U (en) | 2018-05-09 | 2018-05-09 | A kind of wideband vibration damping energy-collecting device of more piezoelectric cantilevers |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109949789A (en) * | 2019-04-16 | 2019-06-28 | 西南交通大学 | A kind of sandwiching thin plate vibration damping superstructure of changeable frequency |
| CN110083996A (en) * | 2019-05-31 | 2019-08-02 | 重庆交通大学 | A kind of shiplines design method based on susceptibility |
-
2018
- 2018-05-09 CN CN201820767261.XU patent/CN208479493U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109949789A (en) * | 2019-04-16 | 2019-06-28 | 西南交通大学 | A kind of sandwiching thin plate vibration damping superstructure of changeable frequency |
| CN109949789B (en) * | 2019-04-16 | 2023-12-26 | 西南交通大学 | Frequency-variable sandwich sheet vibration reduction superstructure |
| CN110083996A (en) * | 2019-05-31 | 2019-08-02 | 重庆交通大学 | A kind of shiplines design method based on susceptibility |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190205 Termination date: 20210509 |