CN108718161A - A kind of novel piezoelectric electricity-generating floor - Google Patents
A kind of novel piezoelectric electricity-generating floor Download PDFInfo
- Publication number
- CN108718161A CN108718161A CN201810555642.6A CN201810555642A CN108718161A CN 108718161 A CN108718161 A CN 108718161A CN 201810555642 A CN201810555642 A CN 201810555642A CN 108718161 A CN108718161 A CN 108718161A
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- piezoelectric cantilever
- mobile
- sliding block
- mobile sliding
- piezoelectric
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- 230000006835 compression Effects 0.000 claims abstract description 44
- 238000007906 compression Methods 0.000 claims abstract description 44
- 238000010248 power generation Methods 0.000 claims abstract description 18
- 239000000758 substrate Substances 0.000 claims abstract description 15
- 230000005611 electricity Effects 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 16
- 230000008569 process Effects 0.000 claims description 14
- 230000000694 effects Effects 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 4
- 238000004062 sedimentation Methods 0.000 claims description 4
- 230000007423 decrease Effects 0.000 claims description 2
- 230000000630 rising effect Effects 0.000 claims description 2
- 230000001360 synchronised effect Effects 0.000 claims description 2
- 239000002033 PVDF binder Substances 0.000 claims 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims 1
- 238000003466 welding Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 9
- 230000008901 benefit Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 230000008520 organization Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/18—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/02—Flooring or floor layers composed of a number of similar elements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/18—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators
- H02N2/186—Vibration harvesters
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F2290/00—Specially adapted covering, lining or flooring elements not otherwise provided for
Abstract
The present invention relates to a kind of piezo-electric generating floors, including upper layer lifting part and lower layer's power generation part, upper layer lifting part includes cover plate of upper layer, lifting spring, hemispherical compression bar and middle level positioning plate, lower layer's power generation part includes mobile sliding block, fixed piezoelectric cantilever, mobile piezoelectric cantilever, underlying substrate, compression spring and piezoelectric patches, it is applied pressure on mobile sliding block by hemispherical compression bar, and the mobile piezoelectric cantilever movement being mounted on mobile sliding block and the fixation piezoelectric cantilever end impact being fixed on underlying substrate produce electricl energy, the compression spring in mobile sliding block one end, which is squeezed, simultaneously applies pressure to piezoelectric patches and produces electricl energy, floor cover plate of upper layer rises when pressure is cancelled, mobile sliding block is moved round about by the restoring force of end compression spring, piezoelectric cantilever end is hit again to be produced electricl energy.The present invention is applied in the energy supply of smart home or the electricity collection of the larger public place of flow of the people.
Description
Technical field
The present invention relates to a kind of using positive pressure voltage electrical effect acquisition electric energy and tramples ground when realizing human body walking generates
Walking pressure conversion of the human body load on floor can be effectively electric energy, belong to pressure by the method and device of the collection of energy
Generated energy acquisition and electricity-generating floor design field.
Background technology
Goed deep into recent years with the research for piezoelectric material, the collection of vibrational energy gradually becomes hot topic, vibration
The collection of energy has the advantages that environmental protection is cheap, and the vibrational energy of moving component can be converted to electricity by the direct piezoelectric effect of piezoelectric material
Can, and energy supply of the floor to other small electronic equipments for being laid on ground may be implemented, it is a kind of energy supply with feasibility
Method.
Piezoelectric energy collecting device have it is simple in structure, calorific value is few, it is anti-interference strong the advantages that, to mechanical vibrational energy
Using with preferable effect, especially in the acquisition of micro-energy and utilization.
Already present electricity-generating floor is all generally without sufficient generating capacity in the market, and the use of piezoelectric material is not yet
It is enough reasonable, and be all mostly that structure type is single, lifting structure can efficiently use the space of structure, piezoelectric cantilever by a small margin
Mutual collision and the stress of piezoelectric patches squeeze, linear structure and nonlinear organization are combined, reasonably apply human foot
The pressure conversion added is piezoelectric energy, has more sufficient generated energy in application in practice, ensures small electronic equipment
Energy supply.
Invention content
The present invention will collect energy caused by walking pressure of the human body load on floor and using direct piezoelectric effect into
Row power generation, by power storage to energy storing structure, to solve the small electronic equipment of intelligent domestic system or public place
Energy supply problem.
In order to solve the above technical problems, technical scheme is as follows：
It is a kind of using piezoelectric energy acquisition principle it is novel can electricity-generating floor, including upper layer lifting part and lower layer Power Generation Section
Point；The upper layer lifting part includes cover plate of upper layer, lifting spring, middle level positioning plate and hemispherical compression bar, the cover plate of upper layer
It for the upper surface on floor, is directly contacted with the vola of human body, human foot tramples the upper layer lid during human body walking
The upper surface of plate, which applies pressure, makes the cover plate of upper layer settle one section of slight distance, and the hemispherical compression bar is welded on the upper layer
The lower surface center of cover board, synchronous with the cover plate of upper layer during sedimentation to decline, the lifting spring is mounted on described
It is in contact between cover plate of upper layer and the middle level positioning plate and with the two；Lower layer's power generation part includes mobile sliding block, movement
Piezoelectric cantilever, fixed piezoelectric cantilever, mobile piezoelectric cantilever fixture, fixed piezoelectric cantilever fixture, compression spring, piezoelectricity
The tangent contact of spherical surface of piece, push rod rubber ring and underlying substrate, the bevel edge of the mobile sliding block and the hemispherical compression bar, it is described
Mobile piezoelectric cantilever is mounted on by the mobile piezoelectric cantilever fixture on the mobile sliding block, the mobile piezoelectric cantilever
The stretching direction of beam and Y-axis parallel and symmetrical and XZ Plane Installations, the fixed piezoelectric cantilever pass through fixed piezoelectric cantilever
Fixture is mounted on the installation base of the underlying substrate, and the stretching direction of the fixed piezoelectric cantilever is parallel with Y-axis, described
Push rod rubber ring is nested in the extension bar end of mobile sliding block, and another plane and the compression spring of the push rod rubber ring connect
It touches, the piezoelectric patches is fixedly mounted on the end of the moving guide rail of the underlying substrate and is contacted with the compression spring.
The lifting spring provides the elastic force of the resistance and rising of floor sedimentation for upper layer lifting part, is applied in human foot
The pressure added, which is cancelled the rear cover plate of upper layer and acted on by the elastic force of the lifting spring, to be risen, the pressure when foot application and institute
State lifting spring resistance it is equal when infall process terminate, when the hemispherical compression bar rises to extreme position, its is hemispheroidal
Planar section is contacted with the middle level positioning plate can not continue to rise, and uphill process terminates；
During the hemispherical compression bar pushes, the mobile sliding block by the effect of the power vertical with its bevel edge and
It is moved in the guide rail of the underlying substrate, in the moving process of the mobile piezoelectric cantilever, the mobile piezoelectric cantilever
The end of beam and the end of the fixed piezoelectric cantilever collide；It is described during the hemispherical compression bar rises
The power that the bevel edge of mobile sliding block is subject to also cancels therewith, and the compression spring applies restoring force to the mobile sliding block makes the shifting
Movable slider is moved to floor center position, and the mobile piezoelectric cantilever is with the mobile sliding block movement and the mobile piezoelectricity
The end of cantilever beam and the end of the fixed piezoelectric cantilever collide again；In the mobile piezoelectric cantilever and described
During the motional collision of fixed piezoelectric cantilever, vibration in piezoelectric cantilever beam simultaneously generates electricity；
At separate floor center of the mobile sliding block along X-direction and the moving process close to floor center, to institute
It states compression spring to apply pressure respectively and reduce pressure, the compression spring is to the pressure change of the piezoelectric patches, the piezoelectricity
Piece produces electricl energy under the pressure effect of variation；
The bevel edge of the mobile sliding block is set as 45 degree, the bevel edge of the mobile sliding block always with the hemispherical compression bar
Spherical surface is tangent and is in close contact；
The mobile piezoelectric cantilever and the fixed piezoelectric cantilever are isometric, the mobile piezoelectric cantilever with it is described solid
Determine piezoelectric cantilever to be aligned in the Z-axis direction and in a plane, it is parallel in X/Y plane and be staggered；
Compared with prior art, the beneficial effects of the invention are as follows：
(1) movement for having bevelled mobile sliding block is introduced, the linear motion of vertical direction is converted into horizontal direction
Linear motion, the maximized useful space for utilizing structure.
(2) collision between piezoelectric cantilever is utilized to generate vibration so that the electric flux of acquisition is more sufficient.
(3) linear structure and nonlinear organization are combined, adequately realizes the combination of the both of which of piezo-electric generating, tied
Structure more rationally and generating efficiency higher
(4) collection for realizing vibrational energy of the floor in two strokes of raising and lowering of small distance, compared to can only
The structure for collecting the energy of single stroke has larger advantage.
Description of the drawings
Fig. 1 is overall structure assembling schematic diagram of the present invention；
Fig. 2 is overall structure of the explosion figure of the present invention；
Fig. 3 is the non-pressured state sectional view of overall structure of the present invention；
Fig. 4 is overall structure pressured state sectional view of the present invention；
Fig. 5 is the non-pressured state schematic diagram of lower layer's power generation part in the present invention；
Fig. 6 is the non-pressured state vertical view of lower layer's power generation part of the present invention；
Fig. 7 is lower layer's power generation part pressured state schematic diagram of the present invention；
Fig. 8 is lower layer's power generation part pressured state vertical view of the present invention；
Fig. 9 is the non-pressured state schematic diagram of generator unit of the present invention；
Figure 10 is generator unit pressured state schematic diagram of the present invention
The middle levels 1- cover plate of upper layer 2- lifting spring 3- positioning plate 4- hemispherical compression bars
5- moves sliding block 6- piezoelectric patches 7- and fixes piezoelectric cantilever 8- movement piezoelectric cantilevers
9- underlying substrates 10- movement piezoelectric cantilever fixtures 11- fixes piezoelectric cantilever fixture
12- compression spring 13- push rod rubber rings
Specific implementation mode
The present invention is described in further detail with reference to specific embodiment.
As shown in Figures 1 to 10, a kind of novel piezoelectric electricity-generating floor.
Fig. 1 is overall structure assembling schematic diagram, is divided into two parts：Upper layer lifting part and lower layer's power generation part.
As shown in Fig. 2, Fig. 2 is overall structure of the explosion figure, overall structure includes one piece of cover plate of upper layer, 1, lifting spring
2, one piece of middle level positioning plate, 3, hemispherical compression bars 4, two pieces of mobile piezoelectric cantilevers of the mobile sliding block being symmetrically installed 5, four
8, the fixed piezoelectric cantilever fixture 11, two of the mobile piezoelectric cantilever fixture 10, four of four fixed piezoelectric cantilevers 7, two
12, two pieces of the compression spring push rod rubber ring 13 of piezoelectric patches 6, two and one piece of underlying substrate 9.
As shown in Figure 3 and Figure 4, Fig. 3 and Fig. 4 is integrally-built sectional view, and Fig. 3 is that the non-pressured state of overall structure cuts open
View, Fig. 4 overall structure pressured state sectional views.The detailed process of pressured state is：In floor upper surface by Human Sole
Pressure sedimentation mistake during, middle level positioning plate 3 remains motionless, cover plate of upper layer 1 push, lifting spring 2 compression and
Resistance is replied to increase, when the reply resistance balance for the pressure and lifting spring 2 for being applied to floor upper surface, infall process terminates,
Hemispherical compression bar 4 reaches the extreme position declined；The detailed process of non-pressured state is：Vola is left on floor when human body walking
Surface, cover plate of upper layer 1 are begun to ramp up by the reply force effect of lifting spring 2, when the plane side of hemispherical compression bar 4 is in
Rise process terminates when the lower surface contact of layer positioning plate, and hemispherical compression bar 4 reaches the extreme position risen.
As shown in Figure 5 and Figure 6, Fig. 5 is the non-pressured state schematic diagram of lower layer's power generation part, and the inclined-plane of two symmetrical sliding blocks at
V-shape；Fig. 6 is the non-pressured state vertical view of lower layer's power generation part, and the spherical surface of hemispherical compression bar 4 and the inclined-plane of mobile sliding block are tangent
And it is in close contact, mobile piezoelectric cantilever 8 is located at overall structure and leans on paracentral inside, and fixed piezoelectric cantilever 7, which is located at, to be moved
The outside of dynamic piezoelectric cantilever 8, compression spring 12 are between the push rod rubber ring 13 and piezoelectric patches 6 of 5 one end of mobile sliding block simultaneously
And the two contacts always, mobile sliding block 5, push rod rubber ring 13, compression spring 12 and piezoelectric patches 6 are in the guide rail of underlying substrate 9
Interior and X-direction is co-axially mounted.
As shown in Figure 7 and Figure 8, Fig. 7 is lower layer's power generation part pressured state schematic diagram, and Fig. 8 is that lower layer's power generation part is pressurized
State vertical view, in conjunction with Fig. 5 and Fig. 6, in pressured state：Mobile sliding block 5 applies pressure to compression spring 12, in the work of pressure
It is produced electricl energy with lower piezoelectric piece 6, the mobile piezoelectric cantilever 8 of lower layer's power generation part is moved to the outside of integral central, and is moved
Dynamic piezoelectric cantilever 8 generates collision both in axis of the mobile process in fixed piezoelectric cantilever 7 and vibrates, to success
It produces electricl energy；In non-pressured state：The be under pressure effect of back stretch of spring 12 of mobile sliding block 5 is moved to integral central
It is dynamic, the pressure change that is applied on piezoelectric patches 6 and produce electricl energy, the mobile piezoelectric cantilever 8 of lower layer's power generation part is into entirety
The medial movement of the heart, and mobile piezoelectric cantilever 8 generates both in axis of the mobile process in fixed piezoelectric cantilever 7
It collides and vibrates, to successfully produce electricl energy.
As shown in Figures 9 and 10, Fig. 9 is the non-pressured state schematic diagram of generator unit, and Figure 10 is that generator unit pressured state shows
It is intended to.The mobile sliding block being symmetrically installed in pressured state is in discontiguous discrete state, symmetrically pacifies in non-pressured state
The mobile sliding block of dress is in the state of contact.
Although above in conjunction with figure, invention has been described, and the invention is not limited in above-mentioned specific embodiment parties
Formula, the above mentioned embodiment is only schematical, rather than restrictive, the case where not departing from present inventive concept
Under, many variations can also be made, these belong to the protection category of the present invention.
Claims (9)
1. a kind of piezo-electric generating floor, it is characterised in that：The device includes upper layer lifting part and lower layer's power generation part；On described
Layer lifting part includes cover plate of upper layer (1), lifting spring (2), middle level positioning plate (3) and hemispherical compression bar (4), the upper layer lid
Plate (1) is the upper surface on floor, is directly contacted with the vola of human body, human foot is trampled on described during human body walking
The upper surface of layer cover board (1), which applies pressure, makes the cover plate of upper layer (1) settle a distance, hemispherical compression bar (4) welding
It is synchronous with the cover plate of upper layer (1) during sedimentation to decline at the lower surface center of the cover plate of upper layer (1), the liter
Drop spring (2) is mounted between the cover plate of upper layer (1) and the middle level positioning plate (3) and is in contact with the two；The lower layer
Power generation part includes mobile sliding block (5), mobile piezoelectric cantilever (8), fixed piezoelectric cantilever (7), mobile piezoelectric cantilever folder
Have (10), fixed piezoelectric cantilever fixture (11), compression spring (12), piezoelectric patches (6), push rod rubber ring (13) and underlying substrate
(9), the tangent contact of spherical surface of the bevel edge and the hemispherical compression bar (4) of the mobile sliding block (5), the mobile piezoelectric cantilever
(8) it is mounted on the mobile sliding block (5) by the mobile piezoelectric cantilever fixture (10), the mobile piezoelectric cantilever
(8) stretching direction is parallel with Y-axis, and the mobile piezoelectric cantilever (8) is mounted on the both sides of mobile sliding block (5) and symmetrical peace
Dress, the fixed piezoelectric cantilever (7) are mounted on the installation of the underlying substrate (9) by fixed piezoelectric cantilever fixture (11)
On boss, the stretching direction of the fixed piezoelectric cantilever (7) is parallel with Y-axis, and the push rod rubber ring (13) is nested in movement
Another plane of the extension bar end of sliding block (5), the push rod rubber ring (13) is contacted with the compression spring (12), the pressure
Electric piece (6) is fixedly mounted on the end of the moving guide rail of the underlying substrate (9) and is contacted with the compression spring (12).
2. piezo-electric generating floor according to claim 1, the lifting spring (2) provides floor for upper layer lifting part and sinks
The resistance of drop and the elastic force of rising, the cover plate of upper layer (1) is by the lifting bullet after the pressure that human foot applies is cancelled
The elastic force effect of spring (2) rises, the infall process knot when the pressure that foot applies is equal with the resistance of the lifting spring (2)
Beam, its hemispheroidal planar section and the middle level positioning plate (3) when the hemispherical compression bar (4) rises to extreme position
Contact can not continue to rise, and uphill process terminates；The middle level positioning plate (3) and underlying substrate (9) remain it is motionless and
The parallel installation of the two.
3. piezo-electric generating floor according to claim 1, during the hemispherical compression bar (4) pushes, the shifting
Movable slider (5) is moved by the effect of the power vertical with its bevel edge in the guide rail of the underlying substrate (9), and the shifting is driven
The movement of dynamic piezoelectric cantilever (8), the end of the end of the mobile piezoelectric cantilever (8) and the fixed piezoelectric cantilever (7)
End collides；During the hemispherical compression bar (4) rises, power that the bevel edge of the mobile sliding block (5) is subject to also with
Revocation, the compression spring (12) applies restoring force to the mobile sliding block (5) makes the mobile sliding block (5) to floor center
Direction is moved, and the mobile piezoelectric cantilever (8) is mobile with the mobile sliding block (5) and the mobile piezoelectric cantilever (8)
End and the end of the fixed piezoelectric cantilever (7) collide again；In the mobile piezoelectric cantilever (8) and described
During the motional collision of fixed piezoelectric cantilever (7), vibration in piezoelectric cantilever beam simultaneously generates electricity.
4. piezo-electric generating floor according to claim 1, in the mobile sliding block (5) along the separate floor of X-direction
Center applies the compression spring (12) pressure and reduces pressure, the pressure respectively with close to the moving process at floor center
Power spring (12) produces electricl energy the pressure changes of the piezoelectric patches (6), the piezoelectric patches (6) under the pressure effect of variation.
5. piezo-electric generating floor according to claim 1, the bevel edge angle initialization of the mobile sliding block (5) be with X-axis at
45 degree, the bevel edge of mobile sliding block (5) described in moving process is tangent and close with the spherical surface of the hemispherical compression bar (4) always
Contact.
6. piezo-electric generating floor according to claim 1, the mobile piezoelectric cantilever (8) and the fixed piezoelectric cantilever
Beam (7) equal length, the mobile piezoelectric cantilever (8) and the fixed piezoelectric cantilever (7) are contour in the Z-axis direction,
It is parallel and be staggered in X/Y plane.
7. piezo-electric generating floor according to claim 1, at the mobile sliding block (5) being symmetrically installed in pressured state
In discontiguous discrete state, the mobile sliding block (5) being symmetrically installed in non-pressured state is in the state and two of contact
The inclined-plane of symmetrical sliding block is at V-shape.
8. piezo-electric generating floor according to claim 1, the compression spring (12) is in described mobile sliding block (5) one end
The push rod rubber ring (13) and the piezoelectric patches (6) between and the two contact always, mobile sliding block (5), push rod rubber
Circle (13), compression spring (12) and piezoelectric patches (6) are interior in the guide rail of underlying substrate (9) and are parallel to X-direction and coaxially pacify
Dress.
9. piezo-electric generating floor according to claim 1, the mobile piezoelectric cantilever (8) and the fixed piezoelectric cantilever
Beam (7) material therefor is PVDF, and piezoelectric patches (6) material therefor is PZT, and is communicated with energy storing structure by external wire
Electric energy is exported.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810555642.6A CN108718161B (en) | 2018-05-31 | 2018-05-31 | A kind of piezo-electric generating floor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810555642.6A CN108718161B (en) | 2018-05-31 | 2018-05-31 | A kind of piezo-electric generating floor |
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| Publication Number | Publication Date |
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| CN108718161A true CN108718161A (en) | 2018-10-30 |
| CN108718161B CN108718161B (en) | 2019-07-12 |
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| CN201810555642.6A Expired - Fee Related CN108718161B (en) | 2018-05-31 | 2018-05-31 | A kind of piezo-electric generating floor |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109537830A (en) * | 2018-11-20 | 2019-03-29 | 甬港现代工程有限公司 | A kind of decorative panel |
| CN109827904A (en) * | 2019-03-19 | 2019-05-31 | 安徽理工大学 | A kind of reaction pool device based on micro-cantilever beam sensor |
| CN110912450A (en) * | 2019-05-18 | 2020-03-24 | 浙江师范大学 | Amplitude limiting excitation type low-frequency piezoelectric generator |
| CN111530534A (en) * | 2020-05-10 | 2020-08-14 | 蔡永霞 | Handheld piezoelectric type medicine pestle |
| CN111697878A (en) * | 2020-07-23 | 2020-09-22 | 上海大学 | Low-frequency collision mode sole energy collector based on piezoelectric stack |
| CN112332707A (en) * | 2020-11-24 | 2021-02-05 | 重庆大学 | Miniature power generation device utilizing impact vibration |
| CN112532109A (en) * | 2020-12-09 | 2021-03-19 | 上海大学 | Low-frequency compression mode piezoelectric energy collector |
| CN112547731A (en) * | 2020-11-24 | 2021-03-26 | 古格亚(温州)网络科技有限公司 | Auxiliary assembly for automatically cleaning precipitated cement and improving conveying efficiency for cement transportation |
| CN113107796A (en) * | 2021-03-27 | 2021-07-13 | 上海寅生科技有限公司 | Potential energy power generation floor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109537830A (en) * | 2018-11-20 | 2019-03-29 | 甬港现代工程有限公司 | A kind of decorative panel |
| CN109827904A (en) * | 2019-03-19 | 2019-05-31 | 安徽理工大学 | A kind of reaction pool device based on micro-cantilever beam sensor |
| CN110912450A (en) * | 2019-05-18 | 2020-03-24 | 浙江师范大学 | Amplitude limiting excitation type low-frequency piezoelectric generator |
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| CN112332707A (en) * | 2020-11-24 | 2021-02-05 | 重庆大学 | Miniature power generation device utilizing impact vibration |
| CN112547731A (en) * | 2020-11-24 | 2021-03-26 | 古格亚(温州)网络科技有限公司 | Auxiliary assembly for automatically cleaning precipitated cement and improving conveying efficiency for cement transportation |
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| CN112532109A (en) * | 2020-12-09 | 2021-03-19 | 上海大学 | Low-frequency compression mode piezoelectric energy collector |
| CN112532109B (en) * | 2020-12-09 | 2021-12-07 | 上海大学 | Low-frequency compression mode piezoelectric energy collector |
| CN113107796A (en) * | 2021-03-27 | 2021-07-13 | 上海寅生科技有限公司 | Potential energy power generation floor |
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| CN108718161B (en) | 2019-07-12 |
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