CN202380410U - Transportation sound absorption barrier with variable cross section and double cavities - Google Patents
Transportation sound absorption barrier with variable cross section and double cavities Download PDFInfo
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- CN202380410U CN202380410U CN2011205355045U CN201120535504U CN202380410U CN 202380410 U CN202380410 U CN 202380410U CN 2011205355045 U CN2011205355045 U CN 2011205355045U CN 201120535504 U CN201120535504 U CN 201120535504U CN 202380410 U CN202380410 U CN 202380410U
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Abstract
A transportation sound absorption barrier with a variable cross section and double cavities belongs to the technical field of transportation noise prevention and comprises a metal sound absorption plate, a middle sound absorption interlayer and a back sound screen which are arranged in sequence from outside to inside, wherein a front cavity with a variable cross section is formed between the metal sound absorption plate and the middle sound absorption interlayer; a back cavity is formed between the middle sound absorption interlayer and the back sound screen; a plurality of lugs are arranged at the upper part of the metal sound absorption plate; circular penetration holes are formed in the lower part of the metal sound absorption plate; the lugs are arranged in arrays; the lateral section of each lug adopts a wedge structure; the hole diameter of each circular penetration hole is 3 to 6 mm; and the penetration hole rate is 20 to 25 percent. The design of the front cavity with the variable cross section breaks simple acoustic conditions, widens the spectral range of sound absorption and enhances the practical effect of noise reduction; and the front cavity with the variable cross section is formed by the metal sound absorption plate and the middle sound absorption interlayer, so that the size of the cavity is flexible and controllable.
Description
Technical field
The utility model relates to a kind of device of traffic antinoise technical field, specifically is the traffic absorbent lined barrier of the two cavitys of a kind of variable cross-section.
Background technology
In the prior art, the sound barrier that is used for the road noise reduction process is often relatively good for the effect of high-frequency noise, yet in the road traffic noise frequency band range, the medium and low frequency section occupies the majority often, and is generally serious with 250～1000Hz.Therefore road noise reduction acoustically effective is still waiting to improve.
Find through the document retrieval: Chinese patent document number: CN201933424U; Open day: on August 17th, 2011; Put down in writing a kind of " metal abatvoix " that is applied in the traffic noise reduction engineering; This technology has sprayed coating respectively at the front and back of abatvoix, is preferably blinds type or hundred pass abatvoixs.But this technology can't satisfy the demand.
In acoustic investigation, variable cross-section all can be strengthened the frequency range of sound absorption reduction owing to its comparatively complicated acoustics border condition significantly with two cavitys, improves the actual effect of sound barrier.
The utility model content
The utility model provides the traffic absorbent lined barrier of the two cavitys of a kind of variable cross-section to the above-mentioned deficiency that prior art exists, and is applied to traffic barrier, and anti noise is strengthened reducing in fields such as building operations place.
The utility model is realized through following technical scheme:
The utility model relates to the traffic absorbent lined barrier of the two cavitys of a kind of variable cross-section; Comprise: the metal acoustical board that sets gradually from outside to inside, middle sound absorption interlayer and back sound barrier; Wherein: form the front cavity of variable cross-section between metal acoustical board and the middle sound absorption interlayer, form rear cavity between middle sound absorption interlayer and the back sound barrier.
Described metal acoustical board top is provided with some projections, and the bottom is provided with round perforation.
Described projection is arranged with matrix-style, and the side direction section of this projection is a wedge structure.
Described projection length 100～200mm, height 10～20mm, spacing distance 30～50mm, height of projection 5～8mm.
Described round perforation, aperture are 3～6mm, perforated percentage 20～25%.
Described metal acoustical board is a wedge structure, and the length ratio on two limits satisfies golden section up and down, promptly 0.618.
The top and the bottom of described metal acoustical board are provided with bead structure.
The sound absorption interlayer is a slabbed construction in the middle of described.
Described back sound barrier is trapezoidal or semicircle fluting reinforcement.
The top margin and the base of described back sound barrier are respectively equipped with: inside recessed semicircle sealing damping groove and inside protruding semicircle sealing damping groove.
The utility model relates to a kind of building noise barrier, comprising: the traffic absorbent lined barrier that some mutual connections are arranged, wherein: the back sound barrier of traffic absorbent lined barrier is fixedly connected with building wall.
Beneficial effect
1. the variable cross-section of front cavity design has upset simple acoustic condition, has widened the sound absorption spectral range, has strengthened the actual effect of noise reduction;
2. front cavity is made up of metal acoustical board and middle sound absorption interlayer, and the size of cavity has flexibility and controllability;
3. the big and employing projection cube structure in inclination angle, acoustical board top prevents that rainwater from getting into and can use rainwater and carrying out from clean, and following inclined-plane is long and the inclination angle is little, and panel cut out rate height can be strengthened the acoustically effective of road pavement and wheel noise;
4. the metal acoustical board is a bead designs, and cooperates plastic strip, can prevent leak-stopping sound and reduce vibration between screen.
Description of drawings
Fig. 1 is the elevation of the utility model.
Fig. 2 is that the A-A of Fig. 1 is to sectional view.
The specific embodiment
Embodiment in the face of the utility model elaborates down; Present embodiment is being to implement under the prerequisite with the utility model technical scheme; Provided detailed embodiment and concrete operating process, but the protection domain of the utility model is not limited to following embodiment.
As depicted in figs. 1 and 2; Present embodiment comprises: the metal acoustical board 1 that sets gradually from outside to inside, middle sound absorption interlayer 2 and back sound barrier 3; Wherein: form the front cavity 4 of variable cross-section between metal acoustical board 1 and the middle sound absorption interlayer 2, form rear cavity 5 between middle sound absorption interlayer 2 and the back sound barrier 3.
Described metal acoustical board 1 top is provided with some projections 6, and the bottom is circular perforations 7 zones.
Described projection 6 is arranged with matrix-style, and the side direction section of this projection 6 is a wedge structure.
Length 100～the 200mm of described projection 6, height 10～20mm, spacing distance 30～50mm, height of projection 5～8mm;
Described round perforation 7, aperture are 3～6mm, perforated percentage 20～25%;
Described metal acoustical board 1 is a wedge structure, and the length on two limits is pressed the golden section division up and down, and ratio is 0.618.
The top of described metal acoustical board 1 and bottom are provided with bead structure 8.
Described back sound barrier 3 is ladder type or semi-circular fluting reinforcement.
The top margin and the base of described back sound barrier 3 are respectively equipped with: inside recessed semicircle sealing damping groove 9 and inside protruding semicircle sealing damping groove 10.The triangle drain hole of back sound barrier 3 bottoms, fluting processing is simple, and the anti-clogging ability is also greater than the circular row water hole.
According to GB/T20247-2006/ISO 354:2003 " acoustic absorptivity measurements of acoustic reverberation chamber "; The actual measurement noise reduction coefficient of the big small capital structure of cavity can be 0.55～0.70 adjustment before and after position through sound absorption interlayer in the middle of adjusting changed, and particularly remarkable to the noise reduction of medium and low frequency.
Present embodiment is the building noise barrier that comprises embodiment 1 described absorbent lined barrier, comprising: the traffic absorbent lined barrier that some mutual connections are arranged, wherein: the back sound barrier of traffic absorbent lined barrier is fixedly connected with building wall.
Claims (10)
1. the traffic absorbent lined barrier of the two cavitys of a variable cross-section; It is characterized in that; Comprise: the metal acoustical board that sets gradually from outside to inside, middle sound absorption interlayer and back sound barrier; Wherein: form the front cavity of variable cross-section between metal acoustical board and the middle sound absorption interlayer, form rear cavity between middle sound absorption interlayer and the back sound barrier.
2. the traffic absorbent lined barrier of the two cavitys of variable cross-section according to claim 1 is characterized in that described metal acoustical board top is provided with some projections, and the bottom is provided with round perforation.
3. the traffic absorbent lined barrier of the two cavitys of variable cross-section according to claim 2 is characterized in that described projection is arranged with matrix-style, and the side direction section of this projection is a wedge structure.
4. the traffic absorbent lined barrier of the two cavitys of variable cross-section according to claim 3 is characterized in that, described projection length 100～200mm, height 10～20mm, spacing distance 30～50mm, height of projection 5～8mm.
5. the traffic absorbent lined barrier of the two cavitys of variable cross-section according to claim 2 is characterized in that described metal acoustical board is a wedge structure.
6. according to the traffic absorbent lined barrier of the two cavitys of claim 3 or 5 described variable cross-sections, it is characterized in that, described wedge structure up and down two limits length ratio satisfy golden section, promptly 0.618.
7. the traffic absorbent lined barrier of the two cavitys of variable cross-section according to claim 2 is characterized in that the top and the bottom of described metal acoustical board are provided with bead structure.
8. the traffic absorbent lined barrier of the two cavitys of variable cross-section according to claim 1 is characterized in that described back sound barrier is ladder type or semi-circular fluting reinforcement.
9. the traffic absorbent lined barrier of the two cavitys of variable cross-section according to claim 8 is characterized in that the top margin and the base of described back sound barrier are respectively equipped with: inside recessed semicircle sealing damping groove and inside protruding semicircle sealing damping groove.
10. a building noise barrier is characterized in that comprise: some mutual connections are arranged, and according to the described traffic absorbent lined barrier of above-mentioned arbitrary claim, wherein: the back sound barrier of traffic absorbent lined barrier is fixedly connected with building wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205355045U CN202380410U (en) | 2011-12-20 | 2011-12-20 | Transportation sound absorption barrier with variable cross section and double cavities |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205355045U CN202380410U (en) | 2011-12-20 | 2011-12-20 | Transportation sound absorption barrier with variable cross section and double cavities |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202380410U true CN202380410U (en) | 2012-08-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205355045U Expired - Fee Related CN202380410U (en) | 2011-12-20 | 2011-12-20 | Transportation sound absorption barrier with variable cross section and double cavities |
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| CN (1) | CN202380410U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105568877A (en) * | 2014-10-10 | 2016-05-11 | 无锡梓昱安全用品科技有限公司 | Anti-crossing sound-insulating road protection plate |
| CN105625222A (en) * | 2014-11-26 | 2016-06-01 | 无锡梓昱安全用品科技有限公司 | Anti-climb type resistance reducing protection plate |
| CN105648945A (en) * | 2014-11-26 | 2016-06-08 | 无锡梓昱安全用品科技有限公司 | Intelligent detection type protective acoustic panel for road |
| CN105696502A (en) * | 2014-11-26 | 2016-06-22 | 无锡梓昱安全用品科技有限公司 | Climb-over preventing protection plate with detection function |
| CN105696497A (en) * | 2014-11-26 | 2016-06-22 | 无锡梓昱安全用品科技有限公司 | Intelligent detection type protection plate for roads |
| CN106952640A (en) * | 2017-04-26 | 2017-07-14 | 大连理工大学 | Control the ultra-thin sound absorption and insulation structure in broadband of acoustic wave propagation path |
| CN111501589A (en) * | 2020-04-21 | 2020-08-07 | 成都大学 | Honeycomb highway sound insulation safety device against wind |
| CN112878223A (en) * | 2021-03-24 | 2021-06-01 | 北京天庆同创环保科技有限公司 | Vertical metal sound barrier unit plate |
| CN114941388A (en) * | 2022-05-13 | 2022-08-26 | 广州市东亚技术有限公司 | Multifunctional acoustic movable partition device |
-
2011
- 2011-12-20 CN CN2011205355045U patent/CN202380410U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105568877A (en) * | 2014-10-10 | 2016-05-11 | 无锡梓昱安全用品科技有限公司 | Anti-crossing sound-insulating road protection plate |
| CN105625222A (en) * | 2014-11-26 | 2016-06-01 | 无锡梓昱安全用品科技有限公司 | Anti-climb type resistance reducing protection plate |
| CN105648945A (en) * | 2014-11-26 | 2016-06-08 | 无锡梓昱安全用品科技有限公司 | Intelligent detection type protective acoustic panel for road |
| CN105696502A (en) * | 2014-11-26 | 2016-06-22 | 无锡梓昱安全用品科技有限公司 | Climb-over preventing protection plate with detection function |
| CN105696497A (en) * | 2014-11-26 | 2016-06-22 | 无锡梓昱安全用品科技有限公司 | Intelligent detection type protection plate for roads |
| CN106952640A (en) * | 2017-04-26 | 2017-07-14 | 大连理工大学 | Control the ultra-thin sound absorption and insulation structure in broadband of acoustic wave propagation path |
| CN106952640B (en) * | 2017-04-26 | 2023-05-12 | 大连理工大学 | Broadband ultrathin sound absorption and insulation structure for controlling sound wave propagation path |
| CN111501589A (en) * | 2020-04-21 | 2020-08-07 | 成都大学 | Honeycomb highway sound insulation safety device against wind |
| CN112878223A (en) * | 2021-03-24 | 2021-06-01 | 北京天庆同创环保科技有限公司 | Vertical metal sound barrier unit plate |
| CN114941388A (en) * | 2022-05-13 | 2022-08-26 | 广州市东亚技术有限公司 | Multifunctional acoustic movable partition device |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120815 Termination date: 20171220 |
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| CF01 | Termination of patent right due to non-payment of annual fee |