CN110048641A - A kind of device and method recycling friction self-excited vibration energy - Google Patents
A kind of device and method recycling friction self-excited vibration energy Download PDFInfo
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- CN110048641A CN110048641A CN201910409842.5A CN201910409842A CN110048641A CN 110048641 A CN110048641 A CN 110048641A CN 201910409842 A CN201910409842 A CN 201910409842A CN 110048641 A CN110048641 A CN 110048641A
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- excited vibration
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- 238000004064 recycling Methods 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims description 9
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- 238000013016 damping Methods 0.000 claims abstract description 45
- 230000007246 mechanism Effects 0.000 claims abstract description 35
- 230000033001 locomotion Effects 0.000 claims abstract description 26
- 230000000694 effects Effects 0.000 claims description 6
- 239000002305 electric material Substances 0.000 claims description 2
- 230000001172 regenerating effect Effects 0.000 abstract description 11
- 238000012546 transfer Methods 0.000 abstract description 3
- 238000012360 testing method Methods 0.000 description 8
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 7
- 230000001133 acceleration Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000013480 data collection Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000004146 energy storage Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 206010044565 Tremor Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
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- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
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- 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
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Abstract
The invention belongs to energy regenerating fields, and in particular to a kind of device for recycling friction self-excited vibration energy.For in the prior art, the device of recycling friction self-excited vibration energy may interfere the movement of mechanical structure in mechanical structure surface additional device, and piezoelectric material is exposed to outside, fierce vibration may be such that piezoelectric material or lead falls, the low problem of the transfer efficiency of the energy regenerating mode of conventional cantilever beam, the present invention provides a kind of device for recycling friction self-excited vibration energy, including brake block mechanism, the brake block mechanism includes fixture and layer structure, layered structure is followed successively by damping layer from top to bottom, piezoelectric material, lower damping layer and brake block, it is opened up on the fixture fluted, the groove is matched with layer structure planar dimension, layer structure is installed in groove, there are two electrodes for setting on the piezoelectric material.The present invention is suitable for the recycling of vibrational energy.
Description
Technical field
The invention belongs to energy regenerating fields, and in particular to a kind of device for recycling friction self-excited vibration energy.
Background technique
Recently as the development of MEMS, electronic component develops in terms of small size, low-power consumption.Electronics
The traditional energy-provision way of component is but the limited battery life by battery, needs to regularly replace, this very cost of idleness and useless
Used batteries environmental pollution is than more serious.Many electronic device replacement batteries in particular circumstances can be very inconvenient, such as deeply
Electronic device in buried lower or building.Therefore developing a kind of self energizing technology just seems necessary.
The energy that people obtain in nature at present is mainly wind energy, solar energy, tide energy, geothermal energy etc..Vibrational energy
It is widely present in nature, such as automobile can be controlled when skyscraper is by wind and be shaken by bridge vibration of beam when bridge
Pendulum, high-speed motion and air have an effect and lead to trembling for rocket when rocket launching.Wherein, friction self-excited vibration results from
In mechanical system rub pair between relative motion, such as automotive brake brake when, when engine operation cylinder and piston it
Between movement can all generate friction self-excited vibration, be widely present in life.Such vibration is that the driving of outside resources is leaned on to be formed
, energy itself does not provide a system to periodically variable energy directly, and the cyclically-varying of system vibration energy is by system
Intrinsic certain self-correcting mechanism is periodically handled up caused by energy to the energy and environment.
At present for less, the existing piezoelectric type vibration Energy harvesting methods one using friction self-excited vibration energy quantifier elimination
As be cantilever beam to be pasted in mechanical structure, while keeping piezoelectric material attached on a cantilever beam, utilize cantilever vibration of beam and piezoelectricity
The direct piezoelectric effect of material realizes energy regenerating.But mechanical structure may be interfered in mechanical structure surface additional device
Movement, and piezoelectric material is constantly exposed to outer, to fall due to fierce vibration piezoelectric material or lead presence risk.
And the energy regenerating mode of conventional cantilever beam needs that higher conversion could be obtained in the case where beam and system generate resonance
Efficiency, the transfer efficiency of the prior art are often unable to reach the demand of designers.
Summary of the invention
For in the prior art, recycle the device of friction self-excited vibration energy mechanical structure surface additional device can
It can interfere the movement of mechanical structure, and piezoelectric material is exposed to outside, fierce vibration may make piezoelectric material or lead
It falls, the low problem of the transfer efficiency of the energy regenerating mode of conventional cantilever beam, the present invention provides a kind of recycling friction from exciting
The device of energy, its object is to: the interference moved to mechanical structure is eliminated, reduces and lead falls risk, improve conversion
Efficiency reduces voltage fluctuation.
The technical solution adopted by the invention is as follows:
A kind of device recycling friction self-excited vibration energy, it is characterised in that: including brake block mechanism, the brake block machine
Structure includes fixture and layer structure, and layered structure is followed successively by damping layer, piezoelectric material, lower damping layer and system from top to bottom
Motion block, opens up on the fixture fluted, and the groove is matched with layer structure planar dimension, and layer structure is installed on groove
In, there are two electrodes for setting on the piezoelectric material.
After the technical solution, piezoelectric material is arranged inside mechanical structure, will not interfere with the movement of mechanical structure, presses
Electric material or lead will not be fallen because of intense vibration.Damping material is arranged in piezoelectric material two sides, not only realizes vibration damping, but also
Energy regenerating is realized, a part of vibrational energy of braking absorption is converted for electric energy.Compared to the energy of conventional cantilever beam
Way of recycling improves energy recovery efficiency without considering frequency resonance problem.And compared to the collection of energy of beam type
Mode, the voltage fluctuation that the present invention is collected into is smaller, more stable.
Preferably, the fixture side is provided with wire guide, and the position of the electrode is located in wire guide.
After the technical solution, conducting wire is facilitated to connect with electrode, the electric energy that piezoelectric material generates is recycled.
Bonding connection between layers of material in layered structure, upper damping layer upper surface are fixedly connected with fixture.
After the technical solution, layers of material is connected as an entirety in layer structure, under the action of frictional force not
It is easily dislocated, and upper damping layer is fixedly connected with fixture, layer structure is not easy to fall off from fixture, energy recycle device
Structure is more stable, reduces failure rate.
The thickness of layered structure is greater than depth of groove, and a part of brake block protrudes from groove.
After the technical solution, deformation occurs although brake block is extruded after, but after brake block compressive deformation still
Some protrudes from groove, prevents the brake force reduction of brake block and generated energy from reducing.
The fixture upper surface offers several bolts hole.
After the technical solution, fixture can be fixedly connected by bolt hole with other equipment, and can be dismantled, side
Just installation and replacement.
A method of damping layer is respectively set in piezoelectric material two sides in recycling friction self-excited vibration energy, one of them
Damping layer is fixedly connected with one of them of the mechanism of two relative motions, and brake block is arranged in another damping layer surface, described
Another of brake block and the mechanism of two relative motions constitute face contact；The mechanism of two relative motions does relative motion, resistance
Buddhist nun's layer generates biggish deformation, so that the piezoelectric material being clipped among damping layer is generated deformation, due to direct piezoelectric effect piezoelectric material
Two sides can generate charge thus generate voltage, to can convert electric energy for frictional vibration.
After the technical solution, electricity can be converted by the vibrational energy generated between mechanism that two do relative motion
Can, then electric energy is stored into energy storage device, is powered for other devices.
In conclusion by adopting the above-described technical solution, the beneficial effects of the present invention are:
1. the inside of fixture is arranged in piezoelectric material, the movement of mechanical structure will not interfere with, piezoelectric material or lead are not yet
It can be fallen because of intense vibration.Upper damping material and lower damping material are set in layer structure, not only realize vibration damping, but also realize
Energy regenerating converts a part of vibrational energy of braking absorption for electric energy.Compared to the energy regenerating of conventional cantilever beam
Mode improves energy recovery efficiency without considering frequency resonance problem.And compared to the collection of energy side of beam type
Formula, the voltage fluctuation that the present invention is collected into is smaller, more stable.
2. fixture side is provided with wire guide, the position of the electrode is located in wire guide, and conducting wire is facilitated to connect with electrode,
The electric energy that piezoelectric material generates is recycled.
3. layers of material bonding connection is an entirety in layer structure, it is not susceptible to misplace under the action of frictional force,
And upper damping layer is fixedly connected with fixture, and layer structure is not easy to fall off from fixture, and the structure of energy recycle device is more steady
It is fixed, reduce failure rate.
4. brake block a part protrudes from groove, deformation occurs although brake block is extruded after, but brake block is by buckling
Still some protrudes from groove after shape, prevents the brake force reduction of brake block and generated energy from reducing.
5. several bolts hole are arranged in fixture top surface, fixture is enable to be fixedly connected by bolt hole with other equipment, and
It can dismantle, facilitate installation and replacement.
6. electric energy can be converted by the vibrational energy generated between mechanism that two do relative motion, then electric energy is stored up
It is stored in energy storage device, powers for other devices.
Detailed description of the invention
Examples of the present invention will be described by way of reference to the accompanying drawings, in which:
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is sectional view of the invention；
Fig. 3 is a kind of for studying the experimental rig structural schematic diagram of recycling friction self-excited vibration energy；
Fig. 4 is the installation diagram for braking disc mechanism；
Fig. 5 is electric machine structure schematic diagram；
Fig. 6 is the voltage-vs-time relational graph using the friction self-excited vibration energy regenerating experimental rig of cantilever beam structure；
Fig. 7 is the voltage-vs-time relational graph using friction self-excited vibration energy regenerating experimental rig of the invention.
In figure: 1- hydraulic cylinder, 2- top plate, 3- fixing bearing, 4- hydraulic stem, 5- brake block mechanism, 5A- fixture hinder on 5B-
Buddhist nun's layer, 5C- piezoelectric material, damping layer under 5D-, 5E- brake block, 5F- wire guide, 6- brake disc mechanism, 6A- brake disc, and 6B- turns
Axis, the vertical bevel gear of 6C-, 6D- servo motor, 6E- machine shaft, 6F- horizontal bevel gear, 6G- motor support base, 7- pedestal, 8-
Guide rail, 9- support column.
Specific embodiment
All features disclosed in this specification or disclosed all methods or in the process the step of, in addition to mutually exclusive
Feature and/or step other than, can combine in any way.
It elaborates below with reference to FIG. 1 to FIG. 7 to the present invention.
A kind of device recycling friction self-excited vibration energy, including brake block mechanism 5, the brake block mechanism 5 include folder
Tool 5A and layer structure, layered structure are followed successively by damping layer 5B, piezoelectric material 5C, lower damping layer 5D and system from top to bottom
Open up fluted on motion block 5E, the fixture 5A, the groove is matched with layer structure planar dimension, and layer structure is installed on recessed
In slot, there are two electrodes for setting on the piezoelectric material 5C.In the present embodiment, upper damping layer 5B and lower damping layer 5D are all made of rubber
Glue material is made.The present embodiment is applied between two mechanical structures to do relative motion, and the fixture of the present embodiment is fixedly mounted
Wherein in a mechanical structure, brake block is contacted by way of extruding with the flat surface of another mechanical structure, and system is worked as
When motion block mechanism 5 is rubbed and generates self-excited vibration, vibrational energy a part is absorbed by upper damping layer 5B and lower damping layer 5D,
Upper damping layer 5B and lower damping layer 5D generates biggish deformation, makes to be clipped in most intermediate piezoelectric material 5C and generates deformation, due to just
The piezoelectric effect two sides piezoelectric material 5C generate charge thus generate voltage.Two electrodes are set in the two sides of piezoelectric material 5C, are led to
Conducting wire connection electrode is crossed, electricity collection can be got up.
Preferably, the side the fixture 5A is provided with wire guide 5F, and the position of the electrode is located in wire guide 5F.Conducting wire
One end passes through wire guide and is connected with electrode, and the other end is connect with electric storage device, the electricity collection that piezoelectric material 5C is generated to storage
In electric installation, the electric storage device can be battery or capacitor.
Preferably, bonding connection between layers of material in layered structure, the upper surface of upper damping layer 5B and fixture 5A
Bonding connection.
Preferably, the thickness of layered structure is greater than depth of groove, and a part of brake block 5E protrudes from groove.
Since upper damping layer 5B and lower damping layer 5D can be deformed after by pressure, in order to guarantee that brake block 5E still has after compression
A part exposes fixture 5A, and the part that brake block 5E protrudes from groove should have enough height.
Preferably, the upper surface the fixture 5A offers several bolts hole, for installing at the desired position the present apparatus.
A method of recycling friction self-excited vibration energy, which is characterized in that damping is respectively set in piezoelectric material two sides
Layer, one of damping layer are fixedly connected with one of them of the mechanism of two relative motions, another damping layer surface setting
Another of the mechanism of brake block, the brake block and two relative motions constitutes face contact；The mechanism of two relative motions is done
Relative motion, damping layer generate biggish deformation, and the piezoelectric material being clipped among damping layer is made to generate deformation, since positive piezoelectricity is imitated
It answers piezoelectric material two sides that can generate charge thus generates voltage, so that electric energy can be converted by frictional vibration.On the piezoelectric materials
Electrode is set, and electric energy is stored into energy storage device by conducting wire connection electrode, or is powered to other devices.
In order to test the energy recovery efficiency of above-described embodiment, using a kind of examination of research recycling friction self-excited vibration energy
Experiment device studies energy recovery efficiency of the invention, which includes the load machine being arranged successively from top to bottom
Structure, brake block mechanism 5, braking disc mechanism 6 and pedestal 7, the loading mechanism and braking disc mechanism 6 are both secured on pedestal 7.Institute
Stating braking disc mechanism 6 includes brake disc 6A, and the loading mechanism is used to brake block mechanism 5 being extruded in brake disc 6A.
From extraction wire on the electrode in brake block mechanism 5, the conducting wire other side connects data collection system, for acquiring system
The electric signal that system generates.
This experimental rig further includes pedestal 7, and a plurality of parallel T font groove, the load machine are provided on the pedestal 7
Structure includes hydraulic cylinder 1 and guide rail 8, and T font boss is provided with below the guide rail 8 and 7 upper groove of pedestal cooperates, and guide rail 8 can be
It is slided on pedestal 7 and is bolted position.It is connected with four support columns 9 on guide rail 8, consolidates at the top of four support columns 9
Surely it is connected with horizontal positioned top plate 2, the hydraulic cylinder 1 is installed on top plate 2, and hydraulic stem 4, liquid are connected with below hydraulic cylinder 1
4 lower part of compression bar is connect with brake block mechanism 5.
This experimental rig further includes the hydraulic control system for controlling hydraulic cylinder 1.Hydraulic control system controls hydraulic cylinder 1
Hydraulic stem 4 is set to extend or retract with the size of regulating brake force.
It is provided with vertical fixed plate below the top plate 2, fixing bearing 3, the liquid are provided in the vertical fixed plate
Compression bar 4 is fixed in vertical fixed plate by fixing bearing 3.
Force sensor and acceleration transducer, the force snesor and acceleration transducer are installed on the hydraulic stem 4
On be connected with data collection system.
The braking disc mechanism 6 includes that motor support base 6G, hollow stent and brake disc 6A, the hollow stent are fixed on base
On seat 7, twice T font boss, the T font groove on the T font boss and pedestal 7 are provided with below the motor support base 6G
Cooperation.Servo motor 6D is installed, the servo motor 6D is connected with level by machine shaft 6E on the motor support base 6G
Bevel gear 6F, the hollow stent top are provided with bearing, and the brake disc 6A is connect by shaft 6B with the bearing, shaft
The lower part 6B is connected with vertical bevel gear 6C, and vertical bevel gear 6B is engaged with horizontal bevel gear 6F.
Before on-test, first according to the position of the friction radius adjustment guide rail 8 determined before test and fixation.On-test
Afterwards, servo motor 6D is opened, the revolving speed of servo motor 6D is adjusted, makes its work on scheduled revolving speed, servo motor 6D passes through
Horizontal bevel gear 6F and vertical bevel gear 6C transmission, rotates brake disc 6A with certain revolving speed.Then start hydraulic system, start
Loading hydraulic cylinder 1 allows hydraulic stem 4 to extend downwards, so that brake block mechanism 5 is pressed upper brake disc 6A, while observing the number of force snesor
According to stopping loads and keeps brake force constant after brake force reaches desired value.
After brake block mechanism 5 is contacted with brake disc 6A, since violent friction generates friction self-excited vibration, vibrational energy
Amount a part is absorbed by upper damping layer 5B and lower damping layer 5D, and upper damping layer 5B and lower damping layer 5D generate biggish deformation, is made
Be clipped in most intermediate piezoelectric material 5C and generate deformation, due to the two sides direct piezoelectric effect piezoelectric material 5C can generate charge thus generate
Voltage, electric signal by conducting wire be passed to data collection system, can acquisition system generate electric signal.
Test carry out in when, the force snesor being mounted on hydraulic stem 4 can be monitored in real time normal force suffered by hydraulic stem 4 with
The size of tangential force, while three-dimensional acceleration transducer can adopt the vibration acceleration input data of three vertical direction of system
Collecting system can analyze data after experiment.
After the test, first control hydraulic cylinder 1 resets hydraulic stem 4, and brake block unloading is then shut off servo motor 6D,
Brake disc 6A shuts down, off-test.
Fig. 6 and Fig. 7 is respectively traditional experimental rig using cantilever beam structure and is existed using experimental rig of the invention
The voltage-vs-time relational graph of (revolving speed 20r/min, load 750N, radius of turn 117mm) under identical operating condition, from the test data
As can be seen that the voltage fluctuation being collected into using experimental rig of the invention is more compared to the collection of energy mode of beam type
It is small, it is more stable.
The specific embodiment of the application above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
The limitation to the application protection scope therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, under the premise of not departing from technical scheme design, various modifications and improvements can be made, these belong to this
The protection scope of application.
Claims (6)
1. a kind of device for recycling friction self-excited vibration energy, it is characterised in that: including brake block mechanism (5), the brake block
Mechanism (5) includes fixture (5A) and layer structure, and layered structure is followed successively by damping layer (5B), piezoelectric material from top to bottom
(5C), lower damping layer (5D) and brake block (5E) open up fluted, the groove and layer structure plane on the fixture (5A)
Size matching, layer structure are installed in groove, and there are two electrodes for setting on the piezoelectric material (5C).
2. a kind of device for recycling friction self-excited vibration energy described in accordance with the claim 1, which is characterized in that the fixture
The side (5A) is provided with wire guide (5F), and the position of the electrode is located in wire guide (5F).
3. a kind of device for recycling friction self-excited vibration energy described in accordance with the claim 1, which is characterized in that layered knot
The upper surface of bonding connection between layers of material in structure, upper damping layer (5B) is fixedly connected with fixture (5A).
4. according to right want 1 described in a kind of device of recycling friction self-excited vibration energy, which is characterized in that layered structure
Thickness be greater than depth of groove, a part of the brake block (5E) protrudes from groove.
5. a kind of device for recycling friction self-excited vibration energy described in accordance with the claim 1, which is characterized in that the fixture
The upper surface (5A) offers several bolts hole.
6. a kind of method for recycling friction self-excited vibration energy, which is characterized in that damping layer is respectively set in piezoelectric material two sides,
One of damping layer is fixedly connected with one of them of the mechanism of two relative motions, another damping layer surface setting braking
Another of the mechanism of block, the brake block and two relative motions constitutes face contact；The mechanism of two relative motions is done relatively
Movement, damping layer generate biggish deformation, so that the piezoelectric material being clipped among damping layer is generated deformation, due to direct piezoelectric effect pressure
Electric material two sides can generate charge thus generate voltage, to can convert electric energy for frictional vibration.
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| CN201910409842.5A CN110048641A (en) | 2019-05-17 | 2019-05-17 | A kind of device and method recycling friction self-excited vibration energy |
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| CN201910409842.5A CN110048641A (en) | 2019-05-17 | 2019-05-17 | A kind of device and method recycling friction self-excited vibration energy |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113156230A (en) * | 2021-01-13 | 2021-07-23 | 西安理工大学 | Testing device and testing method for frictional electric energy collector |
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| CN107972466A (en) * | 2017-11-20 | 2018-05-01 | 吉林大学 | A kind of automobile active engine mount perceived with energy regenerative and transmission power and its control method |
| WO2018076078A1 (en) * | 2016-10-24 | 2018-05-03 | Smiljanic Mario | Ultrasonic grip system |
| CN108195538A (en) * | 2018-02-08 | 2018-06-22 | 西南交通大学 | A kind of testing stand for being used to study frictional vibration energy recovery efficiency |
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| CN202215659U (en) * | 2011-09-18 | 2012-05-09 | 浙江师范大学 | Piezoelectric stack type self-energized hydraulic shock absorber |
| CN104999918A (en) * | 2013-09-16 | 2015-10-28 | 浙江师范大学 | Auxiliary speed reduction assembly for buffer brake |
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Application publication date: 20190723 |
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