CN201867296U - Combined vibration and noise testing equipment - Google Patents
Combined vibration and noise testing equipment Download PDFInfo
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- CN201867296U CN201867296U CN2010206301442U CN201020630144U CN201867296U CN 201867296 U CN201867296 U CN 201867296U CN 2010206301442 U CN2010206301442 U CN 2010206301442U CN 201020630144 U CN201020630144 U CN 201020630144U CN 201867296 U CN201867296 U CN 201867296U
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Abstract
Combined vibration and noise testing equipment is characterized by consisting of a noise test box, a vibrating table and a control box. The noise test box is a closed box with an internal sound cavity, at least a sounding device is arranged in the sound cavity, the noise test box is provided with a support towards the ground, a containing space is formed below the noise test box, the vibrating table is arranged in the containing space, an extension head is fixedly arranged on the top of the vibrating table, a joint corresponding to the extension head is arranged at the bottom surface of the noise test box, the extension head extends into the sound cavity via the joint, a sealing device for connection is arranged between the periphery of the extension head and the joint, and a control circuit is arranged in the control box and used for controlling the test noise box and the vibrating table. The combined vibration and noise testing equipment can be used for combined test for vibration and noise simultaneously, can also be used for independent vibration test or noise test, and fills domestic gap in the field.
Description
Technical field
The utility model relates to a kind of compound mechanics environmental test equipment, is specifically related to a kind of vibration, noise composite testing equipment.Being mainly used in can provide vibration, noise complex test environment simultaneously to products such as each electron-like of containing vibration, noise factor in the working environment, machinery and equipment, and design, the exploitation of product to be measured, each stage such as process, dispatch from the factory are tested.
Background technology
In the actual use of all kinds of civilian, military use products, product all need be faced certain environmental baseline, generally includes factors such as temperature, vibration, humidity, noise.All kinds of environmental factors all can produce corresponding environmental stress to product, and this actual use for product is disadvantageous.Wherein vibrating the typical effects that causes has: structural crack or fracture, components and parts inefficacy, electric loose contact or short circuit or the like; The typical effects that noise causes has parts acoustic fatigue and vibrating fatigue, electric contact interrupter duty, electrical noise excessive or the like.Therefore must carry out strict test each stage such as design, develop, process, dispatch from the factory to product, guarantee that product meets design standards and relevant GB, army mark.
At present, to the test of vibration mainly be by all kinds of electronic, mechanical, hydraulic vibration gens to test specimen impose sine, at random, mode of vibration such as impact, with the vibratory impulse of imitation specimen in actual environment for use, thereby finish the vibration test of testing exemplar; Test to noise mainly is by all kinds of reverberation chambers, travelling-wave tube the test exemplar to be imposed sound field patterns such as diffusion field noise, glancing incidence noise, cavity resonance noise, disturb with the very noisy in the actual environment for use of imitation specimen, thereby finish the noise fest of testing exemplar.But no matter be shaking table or reverberation chamber, travelling-wave tube, single vibration or noise fest all can only be provided, can't vibrate composite testing simultaneously with noise.
The working environment that has some products to be faced in actual use comprises the noise and vibration factor simultaneously, plug-in as aircraft, it bears the low-frequency vibration that transmits from the aircraft main body by plug-in framework on the one hand, bears the high frequency noise that the boundary-layer air pressure fluctuation that directly acts on plug-in outside surface in the flight course excited on the other hand again and vibrates.Wherein, low-frequency vibration mainly causes structure is comprised the inefficacy of support, large circuit board and electromechanical assembly (as gyroscope, relay), and the high frequency noise vibration mainly causes the internal electron product bug.
The product that comprises the noise and vibration factor in the working environment like that simultaneously, the comprehensive effect of vibration, noise can comprise all effects that these cause separately, and vibration, noise integrated environment may influence each other, and are created in the absent variable comprehensive effect of any single environment.Therefore be directed to this series products, thereby want working environment that is virtually reality like reality to greatest extent and reach good test effect, just must vibrate simultaneously, noise fest, otherwise single vibration test or noise fest will be ignored some integrated environment stress, can't reach comprehensive test effect.Up-to-date national military standard GJB 150.24A-2009 proposes relevant testing standard to this series products.
No matter be shaking table or reverberation chamber, travelling-wave tube, single vibration or noise fest all can only be provided, still do not have the composite testing that a kind of device can provide vibration, noise fest simultaneously at present.The inventor this in manufacturing development and the design experiences of being engaged in Related product for many years, at the problems referred to above, in detail after design and the scrupulous assessment, eventually the utility model of a true tool practicality.
Summary of the invention
The utility model purpose provides a kind of vibration, noise composite testing equipment, and this equipment not only can provide independent vibration or noise fest pattern, vibration and noise compbined test pattern also can be provided, thereby reach comprehensive test effect.
For achieving the above object, the technical solution adopted in the utility model is: a kind of vibration, noise composite testing equipment, mainly form by noise fest case, shaking table and control box three parts; Wherein, described noise fest case is an airtight casing, and its inside is an operatic tunes, is provided with at least one cover sound-producing device in this operatic tunes; Described noise fest case is provided with a stent support over the ground, and forms an accommodation space below the noise fest case, and described shaking table is located in this accommodation space; Fixedly install an Extension Head on the moving-coil table top of described shaking table, corresponding Extension Head offers an interface on the described noise fest case bottom surface, and described Extension Head stretches in the operatic tunes through this interface, and circumferentially with between interface establishes packoff and be connected at Extension Head; Establish control circuit in the described control box, be used to control noise fest case and shaking table.
Related content in the technique scheme is explained as follows:
1. in the such scheme, described sound-producing device evokes required sound field in the operatic tunes after the voice signal of certain specific spectral pattern that control box sends drives, and can many cover sound-producing devices be set according to the requirement of the required acoustical power of test.
2. in the such scheme, described Extension Head upper end is by the fixing test specimen of piece fixture; Described Extension Head stretches in the operatic tunes through described interface, and shaking table and noise fest case inside are separated.
3. in the such scheme, the effect of described packoff is to guarantee the sealing between shaking table anchor clamps and the chamber, makes the shaking table work noise not influence sound field in the noise fest case; Described packoff is an O-ring seal that is ductile, and can not cause additional stiffness to the moving-coil to-and-fro movement, is good with silicon rubber loop.
Principle of work of the present utility model and advantage are as follows: the utility model is by being provided with the noise fest case on the table top of shaking table, and the work of sound-producing device in vibration by control box control vibration table surface and the noise fest case, use and reach the purpose of finishing vibration, noise composite testing.The utility model not only can provide the composite testing of vibration, noise fest simultaneously, and independent vibration test or independent noise fest can also be provided, and has filled up the domestic blank in this field.
Description of drawings
Accompanying drawing 1 is the utility model structural principle synoptic diagram.
In the above accompanying drawing: 1. noise fest case; 2. shaking table; 3. control box; 4. the operatic tunes; 5. sound-producing device; 6. support; 7. accommodation space; 8. moving-coil table top; 9. Extension Head; 10. interface; 11. packoff; 12. test specimen.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described:
Embodiment:
Shown in accompanying drawing 1, a kind of vibration, noise composite testing equipment mainly are made up of noise fest case 1, shaking table 2 and control box 3 three parts.
Wherein, described noise fest case 1 is an airtight casing, and its inside is an operatic tunes 4, is provided with at least one cover sound-producing device 5 in this operatic tunes 4; Wherein, described sound-producing device 5 evokes required sound field (can many cover sound-producing devices 5 be set according to the requirement of the required acoustical power of test) in the operatic tunes 4 after the voice signal of certain specific spectral pattern that control box 3 sends drives.
Described noise fest case 1 is provided with a support 6 over the ground and supports, and forms an accommodation space 7 below noise fest case 1, and described shaking table 2 is located in this accommodation space 7.
As shown in Figure 1, fixedly install an Extension Head 9 on the moving-coil table top 8 of described shaking table 2, fixedly test specimen 12 of a piece fixture is passed through in these Extension Head 9 upper ends; Corresponding described Extension Head 9 offers an interface 10 on described noise fest case 1 bottom surface, described Extension Head 9 stretches in the operatic tunes 4 through this interface 10, shaking table 2 and noise fest case 1 inside are separated, and circumferentially establish packoff 11 at Extension Head 9 and be connected with 10 interfaces.The effect of sealing device 11 is to guarantee the sealing between shaking table 2 and the noise fest case 1, makes shaking table 2 work noises not influence sound field in the noise fest case 1; Described packoff 11 is an O-ring seal that is ductile, and can not cause additional stiffness to the moving-coil to-and-fro movement, is good with silicon rubber loop.
Establish control circuit in the described control box 3, be used to control noise fest case 1 and shaking table 2.
During work, control shaking table 2 and 1 work of noise fest case simultaneously by control box 3, comprise signal source, preamplifying circuit, power amplifier module and relevant auxiliary circuit etc. in the control box 3, provide vibration-testing by shaking table 2, provide noise testing by noise fest case 1, vibration, noise composite testing are finished in both cooperations, and real comprehensively test can be provided the product that contains vibration, noise in actual working environment simultaneously.
A kind of vibration of the present utility model, noise composite testing equipment not only can provide the composite testing of vibration, noise fest simultaneously, and independent vibration test or independent noise fest can also be provided, and have filled up the domestic blank in this field.
The foregoing description only is explanation technical conceive of the present utility model and characteristics, and its purpose is to allow the personage who is familiar with this technology can understand content of the present utility model and enforcement according to this, can not limit protection domain of the present utility model with this.All equivalences of being done according to the utility model spirit change or modify, and all should be encompassed within the protection domain of the present utility model.
Claims (2)
1. a vibration, noise composite testing equipment is characterized in that: mainly be made up of noise fest case, shaking table and control box three parts; Wherein, described noise fest case is an airtight casing, and its inside is an operatic tunes, is provided with at least one cover sound-producing device in this operatic tunes; Described noise fest case is provided with a stent support over the ground, and forms an accommodation space below the noise fest case, and described shaking table is located in this accommodation space;
Fixedly install an Extension Head on the table top of described shaking table, corresponding Extension Head offers an interface on the described noise fest case bottom surface, and described Extension Head stretches in the operatic tunes through this interface, and circumferentially with between interface establishes packoff and be connected at Extension Head;
Establish control circuit in the described control box, be used to control noise fest case and shaking table.
2. vibration according to claim 1, noise composite testing equipment is characterized in that: described packoff is an O-ring seal that is ductile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206301442U CN201867296U (en) | 2010-11-29 | 2010-11-29 | Combined vibration and noise testing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206301442U CN201867296U (en) | 2010-11-29 | 2010-11-29 | Combined vibration and noise testing equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201867296U true CN201867296U (en) | 2011-06-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206301442U Expired - Lifetime CN201867296U (en) | 2010-11-29 | 2010-11-29 | Combined vibration and noise testing equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201867296U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102004022A (en) * | 2010-11-29 | 2011-04-06 | 苏州苏试试验仪器有限公司 | Vibration and noise complex experiment equipment |
| CN102507118A (en) * | 2011-10-29 | 2012-06-20 | 洛阳Lyc轴承有限公司 | Medium and small-sized bearing noise vibration test system |
| CN104048844A (en) * | 2014-06-26 | 2014-09-17 | 吉林大学 | Testbed of mixed loading servo drive system reliability |
| CN104076235A (en) * | 2013-03-27 | 2014-10-01 | 深圳市海洋王照明工程有限公司 | Method of detecting open circuit of printed line of PCB |
| CN108414925A (en) * | 2018-01-31 | 2018-08-17 | 中国航空综合技术研究所 | A kind of test device that the mechanical action of vibration environment lower switch controllably applies |
-
2010
- 2010-11-29 CN CN2010206301442U patent/CN201867296U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102004022A (en) * | 2010-11-29 | 2011-04-06 | 苏州苏试试验仪器有限公司 | Vibration and noise complex experiment equipment |
| CN102507118A (en) * | 2011-10-29 | 2012-06-20 | 洛阳Lyc轴承有限公司 | Medium and small-sized bearing noise vibration test system |
| CN102507118B (en) * | 2011-10-29 | 2014-05-14 | 洛阳Lyc轴承有限公司 | Medium and small-sized bearing noise vibration test system |
| CN104076235A (en) * | 2013-03-27 | 2014-10-01 | 深圳市海洋王照明工程有限公司 | Method of detecting open circuit of printed line of PCB |
| CN104048844A (en) * | 2014-06-26 | 2014-09-17 | 吉林大学 | Testbed of mixed loading servo drive system reliability |
| CN108414925A (en) * | 2018-01-31 | 2018-08-17 | 中国航空综合技术研究所 | A kind of test device that the mechanical action of vibration environment lower switch controllably applies |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110615 Effective date of abandoning: 20120125 |