CN207570750U - Vibration test fixture and vibration test fixture debugging system - Google Patents
Vibration test fixture and vibration test fixture debugging system Download PDFInfo
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- CN207570750U CN207570750U CN201721823075.5U CN201721823075U CN207570750U CN 207570750 U CN207570750 U CN 207570750U CN 201721823075 U CN201721823075 U CN 201721823075U CN 207570750 U CN207570750 U CN 207570750U
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- mounting table
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Abstract
The utility model discloses a kind of vibration test fixtures, including mounting table and at least three connectors, the mounting table is cyclic structure, the mounting table is used to fix sample, the connector is set around the central shaft of the mounting table, the connector includes sequentially connected first mounting portion, middle part and the second mounting portion, first mounting portion, second mounting portion is respectively arranged on the both sides of the middle part, first mounting portion is connect with the mounting table, the middle part is obliquely installed towards the central axis direction close to the mounting table, second mounting portion is used for the moving-coil mounted on shake table.Due to vibration test fixture lighter in weight, strut buckling will not occur, it is preferable to the transmission effect of vibration, while pre-debug is carried out to vibration test fixture using vibration test fixture debugging system and method, the effect for making vibration test is more accurate.
Description
Technical field
The utility model is related to product test technical fields, are pressed from both sides more particularly to a kind of vibration test fixture and vibration test
Has debugging system.
Background technology
Vibration test is the pilot project of environmental test and reliability test indispensability, by carrying out vibration test to product,
Help to find whether product meets the requirements in the defects of development or production process and product, so as to be designing, being fixed for product
Type etc. provides foundation, ensures the reliability of product, and then improve the competitiveness in market.
But in actual use, the structure of sample segment is more special, such as the sample of strip, at the trial, meeting
The transmission of vibrational energy is influenced, causes result of the test inaccurate.
Invention content
Based on this, a kind of shaking for test accuracy is improved the utility model lies in that overcoming the deficiencies of the prior art and provide
Dynamic test fixture and vibration test fixture debugging system.
Its technical solution is as follows：
A kind of vibration test fixture, including mounting table and at least three connectors, the mounting table is cyclic structure, described
Mounting table is for fixing sample, and the connector is set around the central shaft of the mounting table, and the connector includes connecting successively
The first mounting portion, middle part and the second mounting portion connect, first mounting portion, second mounting portion be respectively arranged on it is described in
Between portion both sides, first mounting portion connect with the mounting table, and the middle part is towards the central shaft close to the mounting table
Direction is obliquely installed, and second mounting portion is used for the moving-coil mounted on shake table.
Above-mentioned vibration test fixture is connected the moving-coil and mounting table of shake table by connector, and utilizes bundled piece respectively
Sample is fixed on mounting table, the vibration of shake table can be transmitted, realizes the vibration-testing to sample.Since shake table is ring-type
Structure can both place strip sample in a coiled fashion, while it is less to manufacture the material needed for vibration test fixture, makes vibration
The lighter in weight of test fixture, inertia is smaller, is conducive to effective transmission of the moving-coil vibration to shake table, improves vibration test
Accuracy, while middle part is obliquely installed towards the central axis direction close to mounting table, middle part meeting stress when moving-coil vibrates, and
Bending moment is generated, the tension and compression stress that middle part is subject to can be effectively decomposed, strut buckling can be dissolved at this time, ensure the firm of connector
Property, it reduces the power in transmittance process is vibrated and transmits distortion, can also improve the accuracy of vibration test.It is further, since intermediate
Portion is obliquely installed towards the central axis direction close to mounting table, and compared to the moving-coil of shake table, the diameter bigger of mounting table can be to nothing
The sample that method is placed directly on the moving-coil of shake table is placed and is fixed, and has expanded the use scope of shake table.
Further, first mounting portion is detachably connected with the mounting table, and second mounting portion is used for shaking
The moving-coil of dynamic platform is detachably connected.
Further, adjacent two connectors are arranged at intervals.
Further, the mounting table is ring-shaped structure, and the outer diameter of the mounting table is less than 1.5m.
Further, the connector is set along the radial direction of the mounting table.
Further, second mounting portion by the moving-coil of bolt and shake table for being detachably connected, and described second
Mounting portion is equipped with matched at least two through-hole of bolt, and through-hole on same second mounting portion is along the mounting table
Radial direction set gradually.
Further, the bundled piece is multiple, and the bundled piece is provided at circumferentially spaced along the mounting table.
Further, the quantity of the connector is eight, circumferential uniform intervals of the connector along the mounting table
Setting.
Further, the material of the connector and the mounting table is aluminium alloy.
A kind of vibration test fixture debugging system, including the first vibrating sensor, the second vibrating sensor and any of the above-described
Vibration test fixture described in, first vibrating sensor are set on the mounting table, and second vibrating sensor is used
In being arranged on the moving-coil of shake table.
Above-mentioned vibration test fixture debugging system senses shaking for mounting table using the first vibrating sensor at the trial
It is dynamic, using the vibration of the second vibrating sensor sense vibrations platform, by comparing the first vibrating sensor and the second vibrating sensor
The data measured, it may be appreciated that whether the vibration output of shake table is lost during vibration test fixture is transferred to,
The relationship between the vibration of shake table and the vibration of vibration test fixture is can be appreciated that simultaneously, convenient for the vibration by adjusting shake table
Output, controls the vibration of vibration test fixture, can improve the accuracy of vibration test.
Description of the drawings
Fig. 1 is the cooperation schematic diagram one of the vibration test fixture and moving-coil described in the utility model embodiment；
Fig. 2 is the cooperation schematic diagram two of the vibration test fixture and moving-coil described in the utility model embodiment.
Reference sign：
100th, mounting table, 200, connector, the 210, first mounting portion, 220, middle part, the 230, second mounting portion, 10, dynamic
Circle.
Specific embodiment
For the ease of understanding the utility model, the utility model is more fully retouched below with reference to relevant drawings
It states.The better embodiment of the utility model is given in attached drawing.But the utility model can come in many different forms
It realizes, however it is not limited to embodiments described herein.On the contrary, the purpose of providing these embodiments is that make new to this practicality
The more thorough and comprehensive that the disclosure of type understands.
It should be noted that when element is referred to as " being fixed on " another element, it can be directly on another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
For illustrative purposes only, it is unique embodiment to be not offered as " right side " and similar statement.
Unless otherwise defined, all of technologies and scientific terms used here by the article is led with belonging to the technology of the utility model
The normally understood meaning of technical staff in domain is identical.It is only in the term used in the description of the utility model herein
The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term as used herein "and/or" packet
Include the arbitrary and all combination of one or more relevant Listed Items.
" first " described in the utility model, " second " do not represent specific quantity and sequence, are only used for title
It distinguishes.
In the present embodiment, vibration test fixture is mainly used for the vibration test of cable, but above-mentioned vibration test fixture also may be used
For the vibration test of optical cable or other strip samples.
In one embodiment, as shown in Figures 1 and 2, vibration test fixture includes mounting table 100, at least three connectors 200
And bundled piece, mounting table 100 are cyclic structure, connector 200 is set around the central shaft of mounting table 100, and connector 200 includes
Sequentially connected first mounting portion 210,220 and second mounting portion 230 of middle part, the first mounting portion 210, the second mounting portion 230
The both sides of middle part 220 are respectively arranged on, the first mounting portion 210 is connect with mounting table 100, and middle part 220 is towards close to mounting table 100
Central axis direction be obliquely installed, the second mounting portion 230 is used for the moving-coil 10 mounted on shake table, and bundled piece is used for sample
It is fixed on mounting table 100.
Above-mentioned vibration test fixture connects the moving-coil 10 of shake table and mounting table 100, and profit respectively by connector 200
Sample is fixed on mounting table 100 with bundled piece, the vibration of shake table can be transmitted, realize the vibration-testing to sample.Due to
Shake table is cyclic structure, can both place strip sample in a coiled fashion, while manufacture the material needed for vibration test fixture
Expect less, make the lighter in weight of vibration test fixture, inertia is smaller, is conducive to effective biography of the vibration of moving-coil 10 to shake table
It passs, improves the accuracy of vibration test, while middle part 220 is obliquely installed towards the central axis direction close to mounting table 100, it is intermediate
The meeting stress when moving-coil 10 vibrates of portion 220, and bending moment is generated, the tension and compression stress that middle part 220 is subject to can be effectively decomposed, this
When can dissolve strut buckling, ensure the rigidity of connector 200, reduce the power in transmittance process vibrate and transmit being distorted, also may be used
Improve the accuracy of vibration test.Further, since middle part 220 is obliquely installed towards the central axis direction close to mounting table 100, phase
Than in the moving-coil 10 of shake table, the diameter bigger of mounting table 100 can be to the sample that can not be placed directly on the moving-coil 10 of shake table
It is placed and is fixed, expanded the use scope of shake table.
Further, since after sample is placed on mounting table 100, the center of gravity of mounting table 100 can be impacted, and then influence to shake
The dynamic accuracy transmitted, therefore first vibration test fixture can be installed on shake table, sample is being placed in a coiled fashion
On mounting table 100, be conducive to improve the accuracy of vibration test.
Further, the first mounting portion 210 is detachably connected with mounting table 100, and the second mounting portion 230 is used for and shake table
Moving-coil 10 be detachably connected.It can be convenient for being adjusted correspondingly according to various sizes of sample at this time, improve vibration test
Accuracy.
Optionally, the mathematical model of vibration test fixture is established using finite element software, and is to vibration test fixture
The no resonance that can occur is analyzed.
Further, two adjacent connectors 200 are arranged at intervals.It is conveniently detachable at this time, while connector can be prevented
It is interfered between 200.
Further, as shown in Figure 1, mounting table 100 is ring-shaped structure, the outer diameter of mounting table 100 is less than 1.5m.At this time
When being transferred to mounting table 100 due to the vibration of the moving-coil 10 of shake table, vibration phase that the sample on mounting table 100 everywhere is subject to
Together, make the vibration that sample is subject to more abundant, be conducive to improve the accuracy of vibration test.
Further, connector 200 is set along the radial direction of mounting table 100.It can also ensure the vibration of moving-coil 10 at this time
Uniformly it is transferred to mounting table 100.
Further, the second mounting portion 230 is used to be detachably connected by the moving-coil 10 of bolt and shake table, the second installation
Portion 230 is equipped with matched at least two through-hole of bolt, and through-hole on same second mounting portion 230 is along mounting table 100
Radially set gradually.The stable connection of connector 200 and the moving-coil 10 of mounting table at this time is conducive to the transmission of vibration.
Further, above-mentioned vibration test fixture further includes for sample to be fixed on the bundled piece on mounting table 100, bundle
It is multiple to tie up part, and bundled piece is provided at circumferentially spaced along mounting table 100.The fixation of sample at this time is more firm, is conducive to vibrate
Transmission.
Specifically, bundled piece is binding strap.Binding strap good fixing effect, it is at low cost, it does not need to be specifically manufactured, user
Just.
Further, the quantity of connector 200 is eight, and connector 200 is set along the circumferential uniform intervals of mounting table 100
It puts.It at this time both can be preferable to the fixed effect of sample, while the intensity of above-mentioned vibration test fixture is higher.
Further, connector 200 and the material of mounting table 100 are aluminium alloy.The weight of vibration test fixture at this time
It is relatively light, while the rigidity of vibration experiment fixture is larger, can prevent in vibration transmittance process, due to vibration experiment fixture rigidity not
Foot is caused to transmit and is distorted.In addition, mounting table 100 and the material of connector 200 are alternatively the material that carbon fiber etc. is light-weight, intensity is big
Material.
In another embodiment, above-mentioned vibration test fixture can be applied in vibration test fixture debugging system, vibration examination
The vibration test fixture that fixture debugging system includes the first vibrating sensor, the second vibrating sensor and any of the above-described is tested, the
One vibrating sensor is set on mounting table 100, and the second vibrating sensor is used to be arranged on the moving-coil 10 of shake table.
Above-mentioned vibration test fixture debugging system, at the trial using the first vibrating sensor sensing mounting table 100
Vibration, using the vibration of the second vibrating sensor sense vibrations platform, by comparing the first vibrating sensor and the second vibrating sensing
The data that device measures, it may be appreciated that whether the vibration output of shake table is damaged during vibration test fixture is transferred to
Consumption, while can be appreciated that the relationship between the vibration of shake table and the vibration of vibration test fixture, convenient for by adjusting shake table
Vibration output, controls the vibration of vibration test fixture, can improve the accuracy of vibration test.
Specifically, the above-mentioned processing procedure of data that is obtained to the first vibrating sensor and the second vibrating sensor is：Profit
The first vibrational waveform is generated with the signal of the first vibrating sensor, the second vibration wave is generated using the signal of the second vibrating sensor
Shape；The first vibrational waveform and the second vibrational waveform are compared, obtains the difference value between the first vibrational waveform and the second vibrational waveform；
Shake table is adjusted according to difference value, the first vibrational waveform is made to approach sample test vibration waveform.Due in sample test, mould
Intend the working environment of sample, need to limit the vibration that sample is subject in vibration-testing in a certain range, therefore can at this time
Sample test vibrational waveform is preset according to the working environment of sample, is collected using the first vibrating sensor and the second vibrating sensor
Vibration signal generates the first vibrational waveform, the second vibrational waveform respectively, then by comparing the first vibrational waveform, the second vibrational waveform
Difference value is obtained, can be appreciated that the relationship between the vibration of shake table and the vibration of vibration test fixture at this time, then adjust shake table
Vibration, that is, adjust shake table vibration when the second vibrational waveform, the first vibrational waveform is made to approach sample test vibration waveform,
At this time can analog sample working environment, the accuracy of vibration-testing can be improved.Specifically, above-mentioned difference value can be by calculating the
Variance between one vibrational waveform and the second vibrational waveform, and variance is further processed to obtain.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, it is all considered to be the range of this specification record.
Embodiment described above only expresses the several embodiments of the utility model, and description is more specific and detailed,
But therefore it can not be interpreted as the limitation to utility model patent range.It should be pointed out that the common skill for this field
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The scope of protection of the utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (10)
1. a kind of vibration test fixture, which is characterized in that including mounting table and at least three connectors, the mounting table is ring-type
Structure, the mounting table is for fixing sample, and the connector is set around the central shaft of the mounting table, the connector packet
Sequentially connected first mounting portion, middle part and the second mounting portion are included, first mounting portion, second mounting portion are set respectively
In the both sides of the middle part, first mounting portion is connect with the mounting table, and the middle part is towards close to the mounting table
Central axis direction be obliquely installed, second mounting portion be used for mounted on shake table moving-coil.
2. vibration test fixture according to claim 1, which is characterized in that first mounting portion can with the mounting table
Dismantling connection, second mounting portion are used to be detachably connected with the moving-coil of shake table.
3. vibration test fixture according to claim 1, which is characterized in that two adjacent connector intervals are set
It puts.
4. vibration test fixture according to claim 1, which is characterized in that the mounting table is ring-shaped structure, described
The outer diameter of mounting table is less than 1.5m.
5. vibration test fixture according to claim 1, which is characterized in that radial direction of the connector along the mounting table
Direction is set.
6. vibration test fixture according to claim 2, which is characterized in that second mounting portion be used for by bolt with
The moving-coil of shake table is detachably connected, and second mounting portion is equipped with and matched at least two through-hole of bolt, same institute
The through-hole stated on the second mounting portion is set gradually along the radial direction of the mounting table.
7. vibration test fixture according to claim 6, which is characterized in that further include sample being fixed on described put
The bundled piece on platform is put, the bundled piece is multiple, and the bundled piece is provided at circumferentially spaced along the mounting table.
8. according to claim 1-7 any one of them vibration test fixtures, which is characterized in that the quantity of the connector is eight
A, the connector is set along the circumferential uniform intervals of the mounting table.
9. according to claim 1-7 any one of them vibration test fixtures, which is characterized in that the connector and the placement
The material of platform is aluminium alloy.
10. a kind of vibration test fixture debugging system, which is characterized in that including the first vibrating sensor, the second vibrating sensor
And such as claim 1-9 any one of them vibration test fixtures, first vibrating sensor are set on the mounting table, institute
The second vibrating sensor is stated for being arranged on the moving-coil of shake table.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721823075.5U CN207570750U (en) | 2017-12-21 | 2017-12-21 | Vibration test fixture and vibration test fixture debugging system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721823075.5U CN207570750U (en) | 2017-12-21 | 2017-12-21 | Vibration test fixture and vibration test fixture debugging system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207570750U true CN207570750U (en) | 2018-07-03 |
Family
ID=62686168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721823075.5U Active CN207570750U (en) | 2017-12-21 | 2017-12-21 | Vibration test fixture and vibration test fixture debugging system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207570750U (en) |
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2017
- 2017-12-21 CN CN201721823075.5U patent/CN207570750U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 511450 150, No. 8, Qishan Road, Shiqi Town, Panyu District, Guangzhou City, Guangdong Province Patentee after: Radio and TV Measurement and Testing Group Co.,Ltd. Address before: 510656 Guangdong city of Guangzhou province Whampoa Avenue Tianhe District Xiping Yun Road No. 163 Patentee before: GUANGZHOU GRG METROLOGY & TEST Co.,Ltd. |
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| CP03 | Change of name, title or address |