CN100335896C - Material soundproofing properties measuring device - Google Patents
Material soundproofing properties measuring device Download PDFInfo
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- CN100335896C CN100335896C CNB2004100775266A CN200410077526A CN100335896C CN 100335896 C CN100335896 C CN 100335896C CN B2004100775266 A CNB2004100775266 A CN B2004100775266A CN 200410077526 A CN200410077526 A CN 200410077526A CN 100335896 C CN100335896 C CN 100335896C
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Abstract
The present invention provides a device for measuring a sound-proof property of materials, which comprises a signal generator, a sound-proof box and a sound level device, wherein the signal generator is connected with a loudspeaker fixed in the sound-proof box, a sound-proof plate which is made of test materials is installed on one side of the sound-proof box, and the sound level device is arranged opposite to the sound-proof plate. The present invention has the advantages of low preparation cost, small size of the sound-proof box and convenient preparation of test material samples, and is especially suitable for testing the sound-proof property of materials of glass, stone materials, etc. The operation of each device of the present invention is convenient, and the test can be carried out conveniently.
Description
Technical field
The present invention relates to the material soundproofing properties technical field of measurement and test, specifically refer to a kind of material soundproofing properties measuring device.
Background technology
The method of sound insulation property test cabinet is adopted in existing sound insulation property test usually, in a room, test, and the material of wall, size and fit up strict, the main dependence on import of the equipment and material of employing, the cost height is also bigger to the dimensional requirement of test material.For example, the standard sound insulation test reverberation chamber of country of Tongji University acoustic laboratory, sound insulation sheet material to be measured is Yishanmen.For some special material (for example polymeric material, glass and stone material etc.), under general condition want quite difficulty of the so big sound insulating sheet material sample of moulding, therefore be difficult to adopt existing sound insulation value test cabinet that polymeric material is carried out the sound insulation value test.In addition, the such design of standard sound insulation test cabinet, manufacturing are complicated, and the equipment equipment is many, the expense costliness.
Summary of the invention
Purpose of the present invention is exactly in order to solve above-mentioned the deficiencies in the prior art part, provides that a kind of system is succinct, cost is low, and is easy to operate, the material soundproofing properties measuring device that the test material specimen size is little.
Purpose of the present invention is achieved through the following technical solutions: described material soundproofing properties measuring device comprises signal generator, soundproof box, sound level device composition, the described signal generator loudspeaker interior with being fixed on soundproof box is connected, described soundproof box one side is equipped with the sound insulationg board that test material processes, the corresponding setting with sound insulationg board of described sound level device.
In order to realize the present invention better, the material of described soundproof box comprises steel plate, and its outer wall is double-deck hollow structure, and described soundproof box one side has slot, and described sound insulationg board is connected with soundproof box by slot, and described slot periphery posts acoustical material; Described acoustical material comprises sponge; Described loudspeaker is connected with the spectrum measurement instrument.
In the present invention, soundproof box adopts double-deck hollow structure, has both made body structure firm, strengthens soundproof effect again, can adapt to the test condition of big volume; Soundproof box slot periphery posts acoustical material, leaks to prevent sound wave, guarantees the accuracy of test; Amplify behind the signal of the loudspeaker received signal generator emission in the soundproof box, send the noise of various volumes and frequency.Signal generator arbitrarily changes frequency and the power that signal sends by the adjustable electric resistance on the regulating circuit plate, makes the interior loudspeaker of sound proof box send the sound of different frequency and different volumes, carries out test job by the requirement of testing standard.Volume on the signal generator control panel, frequency adjustment parts are knobs, regulate button, can be easily to the frequency of signal and volume is carried out stepless or classification is regulated.The sound level device is used for the sound level size of accurate test sound wave, when the soundproof box slot is not plugged sound insulationg board, can test the preceding sound level size of sound insulation; After the soundproof box slot is plugged sound insulationg board, can test the sound level size after the sound insulation.The spectrum measurement instrument is used for the frequency that measuring signal generator sends signal, thereby determines the size of test material oise insulation factor and the relation of sound frequency.
The present invention compared with prior art has following advantage and beneficial effect:
1, cost of the present invention is low, and building block is few, and system is succinct, the high standard room that does not have prior art to need, and cost of investment is low.
2, the present invention is because the soundproof box size is little; the sample sheet material pressing mold or the injection moulding that require get final product; test the requirement that sound insulation sheet material to be measured is Yishanmen in the reverberation chamber with respect to the existing standard sound insulation; specimen preparation will make things convenient for manyly far away, is particularly suitable for the sound insulation value test of materials such as polymkeric substance and glass, stone material.
3, the present invention is easy to carry, and is simple to operate, and parameter regulation is easy fast, and required environmental requirement is relatively low, can carry out test job in environment such as laboratory more conveniently.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the structural representation of soundproof box among the present invention.
Embodiment
Below in conjunction with embodiment and accompanying drawing the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
As shown in Figure 1, described material soundproofing properties measuring device comprises signal generator 1, soundproof box 2, sound level device 4, signal generator 1 is connected with loudspeaker 3 in being fixed on soundproof box 2, soundproof box 2 one sides are equipped with the sound insulationg board 5 that test material processes, sound level device 4 and sound insulationg board 5 corresponding settings, loudspeaker 3 also is connected with spectrum measurement instrument 6.
As shown in Figure 2, soundproof box 2 adopts double-layer steel plate structure, inside is provided with the fixed support 8 of loudspeaker 3, the casing overall dimension is 200 * 200 * 240mm, the one side has slot 7, and it is of a size of 240 * 120mm, groove width 4～6mm, slot 7 peripheries post acoustical material, for example the sponge (not shown).Corresponding with slot 7 sizes, sound insulationg board 5 is of a size of 240 * 120mm, and thickness 4mm for polymeric material, can prepare sound insulationg board 5 by pressing mold or injection moulding method.
In the present embodiment, signal generator 1 adopts commercially available common apparatus, arbitrarily changes frequency and the power that signal sends, signal frequency range 10Hz～90MHz, volume range 0dB～120dB by regulating the adjustable electric resistance.Sound level device 4 adopts the glad Science and Technology Co., Ltd. of weighing apparatus to produce, and model is the digital type noise apparatus of AZ8928, its test specification 40dB～130dB, degree of accuracy 0.1dB.Spectrum measurement instrument 6 adopts Nanjing to contain general instrument Science and Technology Ltd. and produces, and model is the multi-functional counter of SP100B, its test specification 1Hz～100MHz, degree of accuracy 1Hz～10Hz.
When the present invention works, size according to the soundproof box slot prepares the material sample sound insulationg board that need test, sound insulationg board is inserted in the slot, post the sound-proof material of slot periphery, enabling signal generator, sound level device and spectrum measurement instrument, by the scope of relevant testing of materials standard-required, the conditioning signal generator sends the frequency and the volume of signal, tests the sound transmission loss of this material, the sound insulation values such as sound level size after the sound insulation.
As mentioned above, can realize the present invention preferably.
Claims (4)
1, a kind of material soundproofing properties measuring device, comprise signal generator, soundproof box, sound level device, the described signal generator loudspeaker interior with being fixed on soundproof box is connected, described soundproof box one side is equipped with the sound insulationg board that test material processes, the corresponding setting with sound insulationg board of described sound level device is characterized in that: described soundproof box outer wall is double-deck hollow structure, and the one side has slot, described sound insulationg board is connected with soundproof box by slot, and described slot periphery posts acoustical material.
According to the described material soundproofing properties measuring device of claim 1, it is characterized in that 2, the material of described soundproof box comprises steel plate.
According to the described material soundproofing properties measuring device of claim 1, it is characterized in that 3, described acoustical material comprises sponge.
According to the described material soundproofing properties measuring device of claim 1, it is characterized in that 4, described loudspeaker also is connected with the spectrum measurement instrument.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100775266A CN100335896C (en) | 2004-12-22 | 2004-12-22 | Material soundproofing properties measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100775266A CN100335896C (en) | 2004-12-22 | 2004-12-22 | Material soundproofing properties measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1632559A CN1632559A (en) | 2005-06-29 |
| CN100335896C true CN100335896C (en) | 2007-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2004100775266A Expired - Fee Related CN100335896C (en) | 2004-12-22 | 2004-12-22 | Material soundproofing properties measuring device |
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| CN (1) | CN100335896C (en) |
Cited By (1)
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| DE102012005889A1 (en) * | 2012-03-23 | 2013-09-26 | Audi Ag | Device for demonstrating acoustic damping property of laminar component, particularly glass plate, such as window of motor vehicle, has fully closed housing with two chambers separated from each other over wall |
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| CN107219301A (en) * | 2017-05-26 | 2017-09-29 | 福耀玻璃工业集团股份有限公司 | A kind of device for being used to test vehicle glass sound insulation value |
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| CN108918680B (en) * | 2018-06-13 | 2020-09-29 | 苏州朵唯智能科技有限公司 | Automatic detection method for sound insulation effect of glass |
| CN109374736B (en) * | 2018-10-31 | 2021-03-16 | 四川工程职业技术学院 | Detect sound insulation material sound-proof properties's device |
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| CN110133111B (en) * | 2019-05-22 | 2021-10-08 | 中车长春轨道客车股份有限公司 | Sound insulation testing device for high-speed rail wall plate in ultralow temperature environment and using method of sound insulation testing device |
| CN112051336A (en) * | 2020-08-17 | 2020-12-08 | 中国第一汽车股份有限公司 | Test system and test method for distinguishing type and thickness of automobile glass |
| CN111983033A (en) * | 2020-08-21 | 2020-11-24 | 无锡吉兴汽车声学部件科技有限公司 | Acoustic material high-frequency noise reduction performance testing equipment and evaluation method |
| CN113670586A (en) * | 2021-08-18 | 2021-11-19 | 河南科技大学 | Noise and sound insulation detection device for automobile outer rearview mirror |
| CN115047076A (en) * | 2022-08-17 | 2022-09-13 | 歌尔股份有限公司 | Sound insulation box performance test method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012005889A1 (en) * | 2012-03-23 | 2013-09-26 | Audi Ag | Device for demonstrating acoustic damping property of laminar component, particularly glass plate, such as window of motor vehicle, has fully closed housing with two chambers separated from each other over wall |
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| CN1632559A (en) | 2005-06-29 |
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Assignee: Yudong Mechanical Engineering Co., Ltd., Zhongshan Assignor: South China University of Technology Contract fulfillment period: 2007.12.20 to 2012.12.20 contract change Contract record no.: 2008440000450 Denomination of invention: Material soundproofing properties measuring device Granted publication date: 20070905 License type: Exclusive license Record date: 20081128 |
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Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2007.12.20 TO 2012.12.20; CHANGE OF CONTRACT Name of requester: YUDONG (ZHONGSHAN) MACHINERY ENGINEERING CO., LTD. Effective date: 20081128 |
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Granted publication date: 20070905 Termination date: 20101222 |