CN209293224U - A kind of elevator self energizing piezoelectricity damping device - Google Patents
A kind of elevator self energizing piezoelectricity damping device Download PDFInfo
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- CN209293224U CN209293224U CN201821870727.5U CN201821870727U CN209293224U CN 209293224 U CN209293224 U CN 209293224U CN 201821870727 U CN201821870727 U CN 201821870727U CN 209293224 U CN209293224 U CN 209293224U
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- piezoelectricity
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- damping device
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Abstract
The utility model relates to a kind of elevator self energizing piezoelectricity damping devices comprising: it absorbs the vibration of host and is converted to the piezoelectric energy-conversion part of electric energy, be set between elevator host and spandrel girder；The electric energy that piezoelectric energy-conversion part generates is converted into mechanical deformation, offsets the piezoelectricity shock absorber part of spandrel girder vibration, is set to spandrel girder and hoistway junction, and be electrically connected with piezoelectric energy-conversion part.The utility model replaces the usual direct rigid connection with bolt by piezoelectric energy-conversion part and piezoelectricity shock absorber part, piezoelectric material can be converted into mechanical energy electric energy, and reconvert offsets the vibration of spandrel girder at mechanical deformation, damping twice is carried out, finally vibration consumption to eliminate noise.
Description
Technical field
The utility model relates to elevator engineering field, especially a kind of piezoelectricity damping device suitable for machine-roomless lift.
Background technique
The noise of elevator of people's daily life is influenced, low-frequency noise caused by each sound source mainly in elevator operation.It throws
The resident told is located at the top layer position of skyscraper, main sound source --- the machine by other influence of noise very littles, from low-frequency noise
Room noise is nearest, and the noise intensity of impression is maximum, so reflection is most strong.In running process of elevator, elevator host, guiding device
Etc. moment unbalances will appear vibration problem, cause the steel bracket of host to vibrate, steel bracket and floor are using rigid connection, vibration
Sound will be entered directly in residential building by solid conduction, and strong solid sound wave is formed.In improvement, general sound-absorbing material
Low frequency absorption efficiency is not high, little using sound-absorbing material noise control effect.Now frequently with way be pass through staggered floor, setting
Staircase, which separates, to be directly rigidly connected, and the way of staggered floor will affect headroom height, reduce the basic advantage of machine-roomless lift, be arranged
The way applicable situation of staircase limits to very much, and the occasion for the ladder that completed, installed additional to old building transforming, civil engineering can not be applied.It is another normal
It is to increase Shockproof rubber that some, which does rule, separates the connection of host and support steel beam, this kind of way reduces the strong of support steel beam
Degree, while denoising effect is not particularly evident.
Summary of the invention
To solve the above problems, the purpose of this utility model is to provide a kind of elevator self energizing piezoelectricity shock mitigation system, it can
Solve there is currently vibration noise pollution.
To solve the above problems, the technical solution of the utility model are as follows: a kind of elevator self energizing piezoelectricity shock mitigation system, it is special
Sign is to include: the piezoelectric energy-conversion part for absorbing the vibration of host and being converted to electric energy, is set between elevator host and spandrel girder；
The electric energy that piezoelectric energy-conversion part generates is converted into mechanical deformation, offsets the piezoelectricity shock absorber part of spandrel girder vibration, is set to spandrel girder
With hoistway junction, and it is electrically connected with piezoelectric energy-conversion part.
The structure of the piezoelectric energy-conversion part and piezoelectricity shock absorber part is from top to bottom followed successively by upper cover plate, bolster, middle plate,
One insulating part, piezoelectric elements layer, the second insulating part and bottom plate.
The piezoelectric elements layer of the piezoelectric energy-conversion part includes several piezoelectric elements, and parallel connection is electrically connected between each piezoelectric element
It connects.
The structure of piezoelectric elements layer in the piezoelectric energy-conversion part are as follows: piezoelectric element is flake, is pasted can deformation and multiple
On the elastic component of position；Alternatively, piezoelectric element itself be can deformation and reset shape for hat convex body.
The piezoelectric elements layer of piezoelectricity shock absorber part is made of the piezoelectric material that polarization direction is vertical direction.
Rectifying pressurizer or split type rectifier and pressure stabilizing are connected between piezoelectric energy-conversion part and piezoelectricity shock absorber part
Device, or the microprocessor with rectifying and voltage-stabilizing module.
The piezoelectricity shock absorber part input terminal is connected with the microprocessor comprising frequency, phase adjusting module.
The vibration that detection acquisition can be carried out to spandrel girder initial vibration waveform and real-time vibrational waveform is additionally provided on spandrel girder
Dynamic detector, is electrically connected with microprocessor.
The utility model proposes the mode for using piezoelectricity to convert, piezoelectric material can be converted into mechanical energy electric energy, carry out the
Damping, reconvert offset the vibration of spandrel girder at mechanical deformation, carry out second of damping, finally vibration consumption to
Noise is eliminated, without additional energy supply.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structural schematic diagram of the utility model piezoelectric energy-conversion part and piezoelectricity shock absorber part；
Fig. 3, Fig. 4 are the top views of piezoelectric elements layer in the utility model piezoelectric energy-conversion part；
Fig. 5, Fig. 6 are the differences of two kinds of different form piezoelectric elements of piezoelectric elements layer in the utility model piezoelectric energy-conversion part
The schematic diagram of state.
Fig. 7 is the circuit connection diagram of the utility model.
Specific embodiment
Transaudient structural vibration is the most important approach of elevator host (traction machine) noise transmission, it is therefore prevented that ambient room
Strong solution by influence of noise is to carry out the vibration isolation work of traction machine.
As shown in Figure 1, a kind of self energizing piezoelectricity shock mitigation system of the utility model, including piezoelectric energy-conversion part 1 and piezoelectricity subtract
Shake part 2；Piezoelectric energy-conversion part 1 is set between host 3 and spandrel girder 4, is absorbed the vibration of host and is converted to electric energy；Piezoelectricity shock absorber part
2 are set to spandrel girder 4 and 5 junction of hoistway, are electrically connected with piezoelectric energy-conversion part 1, the electric energy that piezoelectric energy-conversion part 1 generates is converted to machine
Tool deformation, offsets the vibration of spandrel girder 4, transmits to obstruct spandrel girder 4 to the vibration of 5 wall of hoistway.
As shown in Fig. 2, the structure of the piezoelectric energy-conversion part 1 and piezoelectricity shock absorber part 2 be from top to bottom followed successively by upper cover plate 11,
Bolster 12, middle plate 14, the first insulating part 15, piezoelectric elements layer 16, the second insulating part 17, bottom plate 18, upper cover plate 11 and bottom plate 18
Between periphery be surrounded with encirclement 13.
Bolster 12 can be spring, play buffer function to host pressure applied, about 12 bolster connects respectively
Cover board 11 and middle plate 14 are connected, the setting effect of middle plate 14 is played the role of balance to the pressure transmitted by host, played
Protect the effect of piezoelectric elements layer 16；Insulating part 15,17 is respectively set in about 16 piezoelectric elements layer, prevents the leakage of piezoelectric current；Bottom
Encirclement 13 is set between plate 18 and upper cover plate 11, to protect bolster 12, piezoelectric elements layer 16 etc., encirclement 13 is set as arc-shaped,
Using sheet metal, it can be pressurized and arch upward outward；Encirclement 13 is connect with bottom plate 18, in bolster nature, encirclement 13 and upper cover
There are gaps between part 11, and when bolster is pressurized, upper cover plate 11 presses encirclement 13, and encirclement 13 arches upward outward.
Piezoelectric effect: certain dielectrics when being deformed in a certain direction by the effect of external force, inside can generate
Polarization phenomena, while there is positive and negative opposite charge on its two apparent surfaces, it can be by the vibration or strain of very little
Difference is converted to electric energy.After external force is removed, it can be restored to uncharged state again, and this phenomenon is known as direct piezoelectric effect.When
When the direction of active force changes, the polarity of charge is also changed correspondingly.On the contrary, when applying electric field on polarization of dielectric direction,
These dielectrics can also deform, and after electric field removes, dielectric deformation disappears therewith, and this phenomenon is known as inverse piezoelectricity and imitates
It answers.
As shown in figures 3 to 6, since vibration is not to be pressurized comprehensively, it may be possible to which local compression deformation produces electricl energy, therefore piezoelectricity
The piezoelectric elements layer 16 of transducer 1 is arranged to several tiny piezoelectric elements 161, passes through conducting wire between each piezoelectric element 161
163 electrical connections in parallel.Parallel connection electrical connection can collect electricity to the full extent, and (element not being pressurized when series connection is connected with pressure element
Inverse piezoelectric effect can be generated, electric energy is wasted.)
The structure of piezoelectric elements layer 16 in the piezoelectric energy-conversion part 1 are as follows: piezoelectric element 161 is flake, is pasted in elasticity
On part 162, as long as elastic component 162 meets under weak stress, deformation is significant, can be promptly restored to after stress relaxation close to original shape
State and size material can be with, choose suitable material the most in implementing verification process, can be for common elastic material for example
Rubber, elastomer etc., it is preferred that elastic component 162 is in spherical cap shape or spherical in the present embodiment.When by downward pressure, bullet
Property part 162 be pressurized shrink, piezoelectric element 161 with 162 deformation of elastic component and deformation occurs, produce electricl energy, when downward force eliminate when,
Elastic component 162 resets, and piezoelectric element 161 restores, this process is repeated with vibration wave, constantly produces electricl energy.Alternatively, pressure
Electric device 161 itself is processed into shape for hat convex body, and when by downward pressure, deformation occurs for piezoelectric element 161, produces electricl energy, when to
When exerting oneself to eliminate, piezoelectric element 161 resets, this process is repeated with vibration wave, constantly produces electricl energy.Piezoelectric element 161
Polarization direction with direction of vibration consistent (because stress can just produce electricl energy piezoelectric material in polarization direction).
What piezoelectricity shock absorber part 2 utilized is then inverse piezoelectric effect, and piezoelectric elements layer 16 is the pressure of vertical direction by polarization direction
Electric material composition, polarization direction is determined by material itself, and required shape can be processed into according to material polarization direction itself
Shape, in the present embodiment, 16 shape of piezoelectric elements layer in piezoelectricity shock absorber part 2 is the same as piezoelectric energy-conversion part 1.In piezoelectricity damping
Add excitation electrical field in 2 piezoelectric elements layer of part, 16 polarization direction, so that its is generated excitation mechanical deformation, and with load-bearing machinery vibration for girder phase
On the contrary, playing counteracting effectiveness.
Rectifying pressurizer or split type rectifier and steady are connected between piezoelectric energy-conversion part 1 and piezoelectricity shock absorber part 2
Depressor, or the microprocessor 7 with rectifying and voltage-stabilizing module 71, the electric energy that piezoelectric energy-conversion part 1 generates pass through rectifying and voltage-stabilizing electricity
Road is collected, and is exported after treatment to piezoelectricity shock absorber part 2.Extra electric energy can also be used to power to circuit downstream.?
Using the microprocessor 7 with rectifying and voltage-stabilizing module 71 in the present embodiment, as shown in Figure 7.
Most preferably, 2 input terminal of piezoelectricity shock absorber part is connected with microprocessor 7, and microprocessor 7 further includes having frequency, phase
Module 72 is adjusted, the excitation electrical field that piezoelectricity shock absorber part 2 inputs first carries out frequency, phase adjustment through microprocessor 7, makes piezoelectricity damping
The mechanical deformation of part 2 is identical as 4 initial vibration waveform frequency of spandrel girder, and opposite in phase, damping effect is best at this time.
The vibrating detector 6 that detection acquisition can be carried out to 4 initial vibration waveform of spandrel girder is additionally provided on spandrel girder 4,
Reverse phase same frequency (i.e. opposite in phase, the identical frequency of frequency), the voltage of reaction distance variation are accordingly exported after acquisition data
Signal is to microprocessor 7.
Vibrating detector 6 continues to monitor support steel vibration of beam situation (real-time vibrational waveform), acquires through piezoelectricity shock absorber part 2
The effect of excited vibration wave after error signal, then feed back to microprocessor 7, the then adjustment piezoelectricity shock absorber part in real time of microprocessor 7
The input signal of 2 excitation electrical field, to reach the functions such as damping self diagnosis, adaptivity and self-repairability.
Pressure is added in add piezoelectric energy-conversion part 1, spandrel girder and hoistway junction between the utility model host and mainframe
Electric shock absorber part 2, replaces the usual direct rigid connection with bolt, and kinetic energy is converted into electric energy by piezoelectric material, then
It is converted into mechanical deformation, principle are as follows: so spandrel girder just no longer vibrates, and has effectively obstructed spandrel girder and has transmitted to the vibration of wall,
Vibration is finally consumed no longer generation noise.
The utility model is not limited to above embodiment, if the various changes or deformation to the utility model do not take off
Spirit and scope from the utility model, if these changes and deformation belong to the claims and equivalents of the utility model
Within the scope of, then the utility model is also intended to encompass these changes and deformation.
Claims (8)
1. a kind of elevator self energizing piezoelectricity damping device, characterized by comprising: absorb the vibration of host and be converted to electric energy
Piezoelectric energy-conversion part is set between elevator host and spandrel girder；The electric energy that piezoelectric energy-conversion part generates is converted into mechanical deformation, is supported
The piezoelectricity shock absorber part of the spandrel girder that disappears vibration, is set to spandrel girder and hoistway junction, and be electrically connected with piezoelectric energy-conversion part.
2. elevator self energizing piezoelectricity damping device according to claim 1, it is characterised in that: the piezoelectric energy-conversion part and
The structure of piezoelectricity shock absorber part is from top to bottom followed successively by upper cover plate, bolster, middle plate, the first insulating part, piezoelectric elements layer, the second insulation
Part and bottom plate.
3. elevator self energizing piezoelectricity damping device according to claim 1, it is characterised in that: the piezoelectric energy-conversion part
Piezoelectric elements layer includes several piezoelectric elements, electrical connection in parallel between each piezoelectric element.
4. elevator self energizing piezoelectricity damping device according to claim 1, it is characterised in that: in the piezoelectric energy-conversion part
The structure of piezoelectric elements layer are as follows: piezoelectric element is flake, is pasted can be on the elastic component of deformation and reset；Alternatively, piezoelectric element
Itself for can deformation and reset shape for hat convex body.
5. elevator self energizing piezoelectricity damping device according to claim 1, it is characterised in that: the piezoelectric elements of piezoelectricity shock absorber part
Layer is made of the piezoelectric material that polarization direction is vertical direction.
6. elevator self energizing piezoelectricity damping device according to claim 1, it is characterised in that: piezoelectric energy-conversion part subtracts with piezoelectricity
It is connected with rectifying pressurizer or split type rectifier and voltage-stablizer between shake part, or there is rectifying and voltage-stabilizing module
Microprocessor.
7. elevator self energizing piezoelectricity damping device according to claim 1, it is characterised in that: piezoelectricity shock absorber part input terminal connects
It is connected to the microprocessor comprising frequency, phase adjusting module.
8. elevator self energizing piezoelectricity damping device according to claim 1, it is characterised in that: being additionally provided on spandrel girder can
The vibrating detector that detection acquisition is carried out to spandrel girder initial vibration waveform and real-time vibrational waveform, is electrically connected with microprocessor
It connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821870727.5U CN209293224U (en) | 2018-11-13 | 2018-11-13 | A kind of elevator self energizing piezoelectricity damping device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821870727.5U CN209293224U (en) | 2018-11-13 | 2018-11-13 | A kind of elevator self energizing piezoelectricity damping device |
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| CN209293224U true CN209293224U (en) | 2019-08-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109281417A (en) * | 2018-11-13 | 2019-01-29 | 广州广日电梯工业有限公司 | A kind of elevator self energizing piezoelectricity shock mitigation system and method |
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2018
- 2018-11-13 CN CN201821870727.5U patent/CN209293224U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109281417A (en) * | 2018-11-13 | 2019-01-29 | 广州广日电梯工业有限公司 | A kind of elevator self energizing piezoelectricity shock mitigation system and method |
| CN109281417B (en) * | 2018-11-13 | 2024-03-26 | 广州广日电梯工业有限公司 | Self-powered piezoelectric damping system and method for elevator |
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