CN201618681U - Vibration exciter - Google Patents
Vibration exciter Download PDFInfo
- Publication number
- CN201618681U CN201618681U CN201020155081XU CN201020155081U CN201618681U CN 201618681 U CN201618681 U CN 201618681U CN 201020155081X U CN201020155081X U CN 201020155081XU CN 201020155081 U CN201020155081 U CN 201020155081U CN 201618681 U CN201618681 U CN 201618681U
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- China
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- overcoat
- end cap
- coil
- take
- outer sleeve
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- Expired - Fee Related
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- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
The utility model discloses a vibration exciter, which is characterized by comprising a pedestal, an outer sleeve, an end cover, a giant magnetostrictive rod and an output bar, wherein the giant magnetostrictive rod and the output bar are arranged in the outer sleeve, the outer sleeve is fixedly arranged on the pedestal, a coil framework is sleeved on the giant magnetostrictive rod, a coil is wound on the coil framework, a baffle plate is integrally arranged in the outer sleeve, one end of the output bar penetrates through the baffle plate to contact with the giant magnetostrictive rod, the end cover is fixedly connected with the outer sleeve, the other end of the output bar penetrates out of the end cover, a positioning block is integrally arranged on the output bar, and a reset spring is jointed between the positioning block and the end cover. The utility model has the advantages that because the extensional deformation in a certain frequency generated by the giant magnetostrictive rod is caused by a magnetic field which is generated by introducing alternating current into the coil, the frequency of the extensional deformation thereof can be controlled through the frequency of the alternating current, the controllability is strong, the vibration frequency characteristic is good, and the frequency band is wide; and in addition, the vibration exciter has high work efficiency, good working effect and no danger.
Description
Technical field
The utility model relates to a kind of exciting device, especially relates to a kind of vibrator.
Background technology
In vibration experiment, we often will excite measurand with exciting device, make measurand be in the forced vibration state, reach the test objective of measuring mode and resonant frequency thus.For example: when using the intrinsic frequency of resonance method test mechanical system, just need carry out the frequency scanning exciting to test specimen, the frequency response curve of test specimen is noted, make each rank intrinsic frequency then with vibrator.The vibrator kind is a lot of at present, can be divided into mechanical type, electromagnetic type, piezoelectric type and fluid pressure type etc. according to structural principle, but most vibration frequency is fixed in these vibrators, and the controllability of frequency is bad.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of strong vibrator of controllability of vibration frequency.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of vibrator, comprise base, overcoat, end cap and the super mangneto rod and the take-off lever that are arranged in the described overcoat, described overcoat is fixedly installed on the described base, be arranged with coil rack on the described super mangneto rod, be arranged with coil on the described coil rack, be wholely set dividing plate in the described overcoat, one end of described take-off lever passes described dividing plate and contacts with described super mangneto rod, described end cap is fixedly connected on described outer putting, the other end of described take-off lever passes described end cap, be wholely set locating piece on the described take-off lever, apical grafting has back-moving spring between described locating piece and the described end cap.
Described end cap and described overcoat bolt make back-moving spring apply certain precompression by take-off lever to super mangneto rod by regulating end cap, and the magnetic domain of super mangneto rod is arranged along the direction vertical with axial stress when externally-applied magnetic field is zero as much as possible.
Be crimped with rubber washer between described coil rack and the described base, can prevent that coil rack dilatation because of super mangneto rod when vibrator is worked from causing axial vibration.
The material of described base, overcoat, coil rack and take-off lever is the magnetic conduction Heat Conduction Material, and the material of described end cap is a copper, and magnetic circuit is opened circuit at this place, guarantees the magnetic flux in the design magnetic circuit.
Compared with prior art, the utility model has the advantages that because the dilatation of super mangneto rod generation certain frequency is to cause by the magnetic field that feeding alternating current in coil produces, therefore the frequency of its dilatation can be by the FREQUENCY CONTROL of alternating current, controllability is strong, and the vibration frequency characteristic is good, bandwidth; In addition, this vibrator high efficiency, good working effect does not have danger.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
The specific embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
As shown in the figure, a kind of vibrator, comprise base 1, overcoat 2, end cap 3 and the super mangneto rod 5 and the take-off lever 4 that are arranged in the overcoat 2, overcoat 2 is fixedly installed on the base 1, be arranged with coil rack 6 on the super mangneto rod 5, be arranged with coil 7 on the coil rack 6, be crimped with rubber washer 8 between coil rack 6 and the base 1, be wholely set dividing plate 21 in the overcoat 2, one end of take-off lever 4 passes dividing plate 21 and contacts with super mangneto rod 5, and end cap 3 is screwed onto on the overcoat 2, and the other end of take-off lever 4 passes end cap 3, be wholely set locating piece 41 on the take-off lever 4, apical grafting has back-moving spring 9 between locating piece 41 and the end cap 3.
In the foregoing description, the material of base 1, overcoat 2, coil rack 6 and take-off lever 4 four is the magnetic conduction Heat Conduction Material, and the material of end cap 3 is a copper.
The operation principle of this vibrator is: when feeding alternating current in coil 7, in the magnetic field that the axis direction of coil 7 changes, super mangneto rod 5 produces the dilatation of certain frequency along with the variation in magnetic field, drive take-off lever 4 and do the vibration of corresponding frequencies, finally vibration is applied on the test specimen by take-off lever 4.
Claims (4)
1. vibrator, it is characterized in that comprising base, overcoat, end cap and the super mangneto rod and the take-off lever that are arranged in the described overcoat, described overcoat is fixedly installed on the described base, be arranged with coil rack on the described super mangneto rod, be arranged with coil on the described coil rack, be wholely set dividing plate in the described overcoat, one end of described take-off lever passes described dividing plate and contacts with described super mangneto rod, described end cap is fixedly connected on described outer putting, the other end of described take-off lever passes described end cap, be wholely set locating piece on the described take-off lever, apical grafting has back-moving spring between described locating piece and the described end cap.
2. a kind of vibrator as claimed in claim 1 is characterized in that described end cap and described overcoat bolt.
3. a kind of vibrator as claimed in claim 1 is characterized in that being crimped with rubber washer between described coil rack and the described base.
4. a kind of vibrator as claimed in claim 1 is characterized in that the material of described base, overcoat, coil rack and take-off lever is the magnetic conduction Heat Conduction Material, and the material of described end cap is a copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020155081XU CN201618681U (en) | 2010-04-02 | 2010-04-02 | Vibration exciter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020155081XU CN201618681U (en) | 2010-04-02 | 2010-04-02 | Vibration exciter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201618681U true CN201618681U (en) | 2010-11-03 |
Family
ID=43022137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020155081XU Expired - Fee Related CN201618681U (en) | 2010-04-02 | 2010-04-02 | Vibration exciter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201618681U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102205308A (en) * | 2011-01-28 | 2011-10-05 | 上海交通大学 | Force-controlled electromagnetic permanent magnetic composite excitation vibration platform |
| CN102527512A (en) * | 2012-01-19 | 2012-07-04 | 河北联合大学 | Intelligent efficient classificator |
| CN103252312A (en) * | 2013-04-07 | 2013-08-21 | 清华大学 | Pen-shaped high-frequency vibrator driven by multiple groups of electromagnetic coils |
| CN104092347A (en) * | 2014-07-11 | 2014-10-08 | 沈阳工业大学 | Magnetostrictive vibration-driven power generating device |
| CN106017831A (en) * | 2016-05-06 | 2016-10-12 | 中国电力科学研究院 | Ultrahigh-voltage high-resistance model and shock-resistant and shock-insulation test method thereof |
| CN107127134A (en) * | 2017-05-17 | 2017-09-05 | 西安思坦测控技术有限公司 | Magnetostrictive transducer and the high-power ultralow frequency sound source for underwater emission |
| CN107790714A (en) * | 2017-10-12 | 2018-03-13 | 浙江大学 | A kind of assisting demolding device in powder pressing technique |
| CN109738521A (en) * | 2019-01-21 | 2019-05-10 | 浙江工业大学 | A kind of hand-held automatically exciting damage check instrument for structure flaw detection |
| CN109738522A (en) * | 2019-01-21 | 2019-05-10 | 浙江工业大学 | A kind of handheld electromagnetic absorption damage check instrument for steel building flaw detection |
-
2010
- 2010-04-02 CN CN201020155081XU patent/CN201618681U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102205308A (en) * | 2011-01-28 | 2011-10-05 | 上海交通大学 | Force-controlled electromagnetic permanent magnetic composite excitation vibration platform |
| CN102527512A (en) * | 2012-01-19 | 2012-07-04 | 河北联合大学 | Intelligent efficient classificator |
| CN103252312A (en) * | 2013-04-07 | 2013-08-21 | 清华大学 | Pen-shaped high-frequency vibrator driven by multiple groups of electromagnetic coils |
| CN103252312B (en) * | 2013-04-07 | 2015-04-29 | 清华大学 | Pen-shaped high-frequency vibrator driven by multiple groups of electromagnetic coils |
| CN104092347A (en) * | 2014-07-11 | 2014-10-08 | 沈阳工业大学 | Magnetostrictive vibration-driven power generating device |
| CN106017831A (en) * | 2016-05-06 | 2016-10-12 | 中国电力科学研究院 | Ultrahigh-voltage high-resistance model and shock-resistant and shock-insulation test method thereof |
| CN107127134A (en) * | 2017-05-17 | 2017-09-05 | 西安思坦测控技术有限公司 | Magnetostrictive transducer and the high-power ultralow frequency sound source for underwater emission |
| CN107790714A (en) * | 2017-10-12 | 2018-03-13 | 浙江大学 | A kind of assisting demolding device in powder pressing technique |
| CN109738521A (en) * | 2019-01-21 | 2019-05-10 | 浙江工业大学 | A kind of hand-held automatically exciting damage check instrument for structure flaw detection |
| CN109738522A (en) * | 2019-01-21 | 2019-05-10 | 浙江工业大学 | A kind of handheld electromagnetic absorption damage check instrument for steel building flaw detection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101103 Termination date: 20130402 |