CN203071837U - Piezoelectric ceramic actuator - Google Patents
Piezoelectric ceramic actuator Download PDFInfo
- Publication number
- CN203071837U CN203071837U CN 201220743498 CN201220743498U CN203071837U CN 203071837 U CN203071837 U CN 203071837U CN 201220743498 CN201220743498 CN 201220743498 CN 201220743498 U CN201220743498 U CN 201220743498U CN 203071837 U CN203071837 U CN 203071837U
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- piezoelectric ceramic
- pressing plate
- bottom electrode
- electrode sheet
- pole piece
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- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The utility model discloses a piezoelectric ceramic actuator in the field of transformers, which comprises an installation base plate fixed on the wall of a transformer oil tank. A vibration mass block, a lower electrode plate, a piezoelectric ceramic element, an upper electrode plate, an elastic pad and a pressing plate are sequentially laminated on the installation base plate from the bottom up, wherein the centers of the pressing plate, the elastic pad, the upper electrode plate, the piezoelectric ceramic element and the lower electrode plate are provided with through-holes, the vibration mass block is provided with a threaded hole corresponding to the through-holes, and the pressing plate, the elastic pad, the upper electrode plate, the piezoelectric ceramic actuator, the lower electrode plate and the vibration mass block are fixed together through the a connecting bolt. According to the utility model, the pressing plate, the elastic pad, the upper electrode plate, the piezoelectric ceramic element, the lower electrode, the vibration mass block and the like are connected together in series through the bolt, the structure is simple, and the manufacturing cost is low. In addition, the piezoelectric ceramic actuator is convenient to assemble and disassemble, and can be applied to noise reduction of transformers.
Description
Technical field
The utility model relates to a kind of transformer noise control device, particularly a kind of actuator.
Background technology
The acoustical treatment of traditional control noise mainly contains methods such as sound absorption, sound insulation and use muffler, and these modes are referred to as the control of " passive " noise, and in general, they are only effective to the control of high-frequency noises., roentgen Paul Leug(1898～1979 in 1933) patent that proposes " is eliminated the process of sound vibration ", has started the beginning of Active noise control using (Active Noise Control) research.The Active noise control using technology is good at the control of low-frequency noise, complementary extremely strong with the control of no source noise.Active noise control using can be divided into active acoustic control system and Active Force control.Active acoustic control system is to produce a secondary sound field with secondary sound source, thereby offsets elementary noise, namely " eliminates the noise with sound ".Have quite a few noise to be because structural vibration is radiation-induced, also just controlled acoustic radiation or the sound transmission of structure with the vibration of secondary power source control structure, the method that noise is controlled in the secondary power of this employing source is exactly that Active Force is controlled.Secondary power source is also referred to as moving device, actuator choose the quality that is directly determining to control effect.
The actuator that is used for the active noise ACTIVE CONTROL traditionally mainly contains following two kinds:
1. magnetostrictive actuator.Its operation principle is that magnetostrictive material produce magnetostrictive effect under the effect of externally-applied magnetic field.Advantage is that power output is big, dynamic response is fast.Shortcoming is that displacement is little.And magnetostrictive material are very crisp, be difficult to processing, so cost of manufacture are bigger.
2. electromagnetic actuator.It is the device that utilizes the electromagnetic force of electromagnetic field to move, the basic principle of electromagnetic actuator is when electric current passes through conductor, can produce corresponding electromagnetic field around it, simultaneously, near electromagnetic field conductor also can be subjected to corresponding attraction or repulsive force, causes the mechanical movement of ferromagnetic material.Be mainly used in control and require not quite the occasion that control frequency is had relatively high expectations.
3. piezoelectric actuator.Its operation principle is to utilize the inverse piezoelectric effect of piezoelectric, by applying external electrical field, converts electrical energy into the device of mechanical energy.What be most widely used is the piezoelectric ceramic actuator.Its outstanding advantage is that the reaction time is short, and response speed is fast, and frequency response can reach several KHz or higher, drives the efficient height, and is simple in structure, do not relate to problems such as sealing, leakage, the control precision height.
The modal usage of piezoelectric ceramic actuator is directly the piezoelectric ceramic thin sheet that is coated with electrode to be pasted on the vibrating body (being generally thin plate or crossbeam).Though the method is simple, also exist the shortcoming that can not be ignored: at first piezoelectric ceramic thin sheet is subjected to the influence of its thickness, and driving force ratio is less; Secondly owing to need paste piezoelectric ceramic and vibrating mechanism together, and require in the vibration that continues, not become flexible, come off, higher to the glue quality requirement; In a single day be pasted and fixed on a place again, just be difficult to move again, therefore be unfavorable for testing and carry out easily and flexibly.
The utility model content
The purpose of this utility model provides a kind of piezoelectric ceramic actuator, has solved deficiency of the prior art, and it is simple in structure, and is with low cost, and dismounting is quick, tests convenient, flexible.
The purpose of this utility model is achieved in that a kind of piezoelectric ceramic actuator, comprise the installation base plate that is fixed on the transformer oil tank wall, from bottom to top laminated the oscillating mass piece on the described installation base plate successively, the bottom electrode sheet, piezo ceramic element, pole piece powers on, cushion and pressing plate, described pressing plate, cushion, pole piece powers on, piezo ceramic element and bottom electrode sheet center offer through hole, offer the screwed hole corresponding with described through hole, described pressing plate on the described oscillating mass piece, cushion, pole piece powers on, piezo ceramic element, bottom electrode sheet and oscillating mass piece are fixed together through connecting bolt.
During the utility model work, by power on pole piece and bottom electrode sheet are applied alternating voltage, make piezoelectric ceramic because piezoelectric effect produces vibration, and then the oil tank of transformer that drive is attached thereto produce vibration.Compared with prior art, the beneficial effects of the utility model are: the present invention is connected in series pressing plate, cushion, the pole piece that powers on, piezo ceramic element, bottom electrode sheet, oscillating mass piece etc. by bolt and is one, it is simple in structure, low cost of manufacture, and easy accessibility.The utility model can be used in the transformer noise reduction.
In order to strengthen the actuating force of this device, increase its Oscillation Amplitude, described pole piece and the bottom electrode sheet of powering on all is " Contraband " font, and described powering on overlaps together at interval through the polylith piezo ceramic element between pole piece and the bottom electrode sheet.Adopt the mode of multi-disc piezo ceramic element, the pole piece that powers on, bottom electrode sheet overlapped in series to strengthen this device actuating force.
In order to make bolt more reliable, the through hole on the described pressing plate is counter sink.
In order to make the easier for installation flexible of oscillating mass piece and installation base plate, be fixed together through set bolt between described oscillating mass piece and the installation base plate.
Description of drawings
Fig. 1 is the utility model structural representation.
Wherein, 1 pressing plate, 2 cushions, 3 pole pieces that power on, 4 piezo ceramic elements, 5 bottom electrode sheets, 6 oscillating mass pieces, 7 connecting bolts, 8 set bolts, 9 base plates, 10 transformer oil tank walls.
Embodiment
A kind of piezoelectric ceramic actuator as shown in Figure 1, comprise through set bolt 8 and be installed in installation base plate 9 on the transformer oil tank wall 10, install on the base plate 9 and from bottom to top laminated oscillating mass piece 6 successively, bottom electrode sheet 5, piezo ceramic element 4, pole piece 3 powers on, cushion 2 and pressing plate 1, pressing plate 1, cushion 2, pole piece 3 powers on, piezo ceramic element 4 and bottom electrode sheet 5 centers offer through hole, through hole on the pressing plate 1 is counter sink, offer the screwed hole corresponding with through hole on the oscillating mass piece 6, pressing plate 1, cushion 2, pole piece 3 powers on, piezo ceramic element 4, bottom electrode sheet 5 and oscillating mass piece 6 are fixed together through connecting bolt 7, power on pole piece 3 and bottom electrode sheet 5 all is " Contraband " font, powers on to overlap together at interval through three piezo ceramic elements 4 between pole piece 3 and the bottom electrode sheet 5.
The utility model is connected in series pressing plate 1, cushion 2, the pole piece 3 that powers on, piezo ceramic element 4, bottom electrode sheet 5, oscillating mass piece 6 etc. by connecting bolt 7 and is one, and process structure is simple, low cost of manufacture; Be fixed to transformer or oil tank of transformer surface, convenient and flexible installation by set bolt 8; Can adopt the upper and lower electrode slice 5 of use " Contraband " font to cooperate 4 series connection of three piezo ceramic elements to use in addition, have the advantage that actuating force is big, Oscillation Amplitude is big.
The utility model is not limited to above-described embodiment; on the basis of the disclosed technical scheme of the utility model; those skilled in the art is according to disclosed technology contents; do not need performing creative labour just can make some replacements and distortion to some technical characterictics wherein, these replacements and distortion are all in protection range of the present utility model.
Claims (4)
1. piezoelectric ceramic actuator, comprise the installation base plate that is fixed on the transformer oil tank wall, it is characterized in that, from bottom to top laminated the oscillating mass piece on the described installation base plate successively, the bottom electrode sheet, piezo ceramic element, pole piece powers on, cushion and pressing plate, described pressing plate, cushion, pole piece powers on, piezo ceramic element and bottom electrode sheet center offer through hole, offer the screwed hole corresponding with described through hole, described pressing plate on the described oscillating mass piece, cushion, pole piece powers on, piezo ceramic element, bottom electrode sheet and oscillating mass piece are fixed together through connecting bolt.
2. a kind of piezoelectric ceramic actuator according to claim 1 is characterized in that, described pole piece and the bottom electrode sheet of powering on all is " Contraband " font, and described powering on overlaps together at interval through the polylith piezo ceramic element between pole piece and the bottom electrode sheet.
3. a kind of piezoelectric ceramic actuator according to claim 1 and 2 is characterized in that, the through hole on the described pressing plate is counter sink.
4. a kind of piezoelectric ceramic actuator according to claim 1 and 2 is characterized in that, is fixed together through set bolt between described oscillating mass piece and the installation base plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220743498 CN203071837U (en) | 2012-12-31 | 2012-12-31 | Piezoelectric ceramic actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220743498 CN203071837U (en) | 2012-12-31 | 2012-12-31 | Piezoelectric ceramic actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203071837U true CN203071837U (en) | 2013-07-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220743498 Expired - Lifetime CN203071837U (en) | 2012-12-31 | 2012-12-31 | Piezoelectric ceramic actuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203071837U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115199689A (en) * | 2022-07-19 | 2022-10-18 | 北京航空航天大学 | Magnetic type semi-active vibration control device based on piezoelectric material |
-
2012
- 2012-12-31 CN CN 201220743498 patent/CN203071837U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115199689A (en) * | 2022-07-19 | 2022-10-18 | 北京航空航天大学 | Magnetic type semi-active vibration control device based on piezoelectric material |
| CN115199689B (en) * | 2022-07-19 | 2024-02-20 | 北京航空航天大学 | Magnetic attraction type semi-active vibration control device based on piezoelectric material |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130717 |
|
| CX01 | Expiry of patent term |