CN208949758U - Asymmetric enhances diffraction type sound barrier top denoising device - Google Patents
Asymmetric enhances diffraction type sound barrier top denoising device Download PDFInfo
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- CN208949758U CN208949758U CN201821598315.0U CN201821598315U CN208949758U CN 208949758 U CN208949758 U CN 208949758U CN 201821598315 U CN201821598315 U CN 201821598315U CN 208949758 U CN208949758 U CN 208949758U
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Abstract
The utility model relates to a kind of denoising devices of road traffic noise, enhance diffraction type sound barrier top denoising device more particularly to a kind of asymmetric, mounting seat including several diffractive plates and positioned at diffractive plate bottom end, several diffractive slabs at chamber in be equipped with bottom plate and lateral partitions, there are raised structures at the top of diffractive plate, wherein outermost diffractive plate is curved slab, several diffractive plates are asymmetric arrangement.There are raised structures at the top of the diffractive plate of the present apparatus, can further improve acoustic wave diffraction loss.The outermost diffractive plate of device is curved slab, remaining diffractive plate is straight panel.Diffractive plate is asymmetric arrangement, and intermediate diffractive plate has maximum height, and the average height of side diffractive plate is significantly lower than the other side.Device includes lateral partitions, has bottom plate between two adjacent diffractive plates, and lateral partitions, bottom plate and diffractive plate constitute chamber structure.Device can effectively reduce diffraction sound at the top of sound barrier, and acoustical behavior is stable, easy to maintain.
Description
Technical field:
The utility model relates to a kind of denoising devices of road traffic noise, and in particular to a kind of asymmetric enhancing diffraction
Type sound barrier top denoising device.
Background technique:
With traffic speed raising and road network it is intensive, road traffic noise pollution it is more serious.For noise control dirt
Dye, construction sound barrier is a cost-effective measure being widely used both at home and abroad.For the noise reduction effect for further increasing sound barrier
Fruit can carry out improvement to sound barrier top or install denoising device on sound barrier top.Wherein, since sound barrier top noise reduction fills
It sets and often uses one or more principle of noise reduction such as sound absorption, sound wave interference, therefore its noise reduction effect is more considerable.Exploitation is efficient
Top denoising device have great importance and be worth for administering traffic route noise pollution.
Though sound barrier top denoising device applied by present has achieved preferable noise reduction effect, still have larger
Room for promotion.In addition, traffic noise is broadband noise, especially there is biggish Energy distribution in middle low frequency, and commonly use at present
Denoising device often there is preferable noise reduction capability to high-frequency noises or particular low frequency noise, and the improvement to broadband noise
Ability is weaker.
Utility model content:
The technical effect of the utility model can overcome drawbacks described above, and provide one kind has good noise reduction effect in wide frequency range
The top denoising device of fruit.
The technical solution adopted in the utility model are as follows: a kind of asymmetric enhancing diffraction type sound barrier top denoising device,
Mounting seat including several diffractive plates and positioned at diffractive plate bottom end, top include by diffractive plate, lateral partitions and bottom plate group
At chamber structure, there are raised structures at the top of the diffractive plate, wherein outermost diffractive plate is curved slab, several diffraction
Plate is asymmetric arrangement.
Further, several described diffractive plates in addition to outermost be curved surface version, remaining diffractive plate be straight panel.
Further, to increase acoustic wave diffraction loss, diffractive plate is asymmetric arrangement, is located in several described diffractive plates
The diffractive plate in middle position is higher than other diffractive plates, and wherein the average height of side diffractive plate is smaller compared to the other side.
Further, the height of several diffractive plates is successively reduced from centre to two sides.
Further, the height parameter of the height of several diffractive plates meets the vertex of diffractive plate and spreads out two sides are adjacent
Penetrate the top of plate vertex line, sound wave cannot cross some diffractive plate and go directly next diffractive plate.
Further, several described diffractive slabs at a chamber in be equipped with for adjusting top device two sides weight
The add-in card of proportion, so that the center of gravity of entire top device is in mid-plane.
Further, the bottom plate and mounting seat are equipped with drain aperture.
Further, there are raised structures at the top of diffractive plate, which can further increase acoustic wave diffraction loss,
Improve noise reduction effect.
Further, there is bottom plate, top device also includes the lateral partitions being intervally arranged, bottom between neighboring diffraction plate
Plate, diffractive plate and lateral partitions form chamber structure.
The utility model has the beneficial effects that the present apparatus includes multiple diffractive plates, and there is protrusion at the top of diffractive plate；Diffractive plate
Noise reduction effect is improved for asymmetric arrangement to increase acoustic wave diffraction loss；Outermost is curved slab, can take into account beautiful and noise reduction
Performance；It also include lateral partitions, bottom plate and add-in card.Several diffractive plates are curved surface version, remaining diffractive plate in addition to outermost
For straight panel.To obtain better noise reduction effect, which is unsymmetric structure.Diffractive plate is located in the middle with maximum
Highly, diffractive plate height is successively decreased from centre to two sides, and outermost diffractive plate has the smallest height, side diffractive plate average height
It is lower compared to the other side.Two sides diffractive plate number can also be different.The height of diffractive plate meets the diffractive plate top positioned at adjacent
The top of two sides diffractive plate top line, so that top sound wave, which can not cross a certain diffractive plate, directly reaches next diffractive plate.
Obtuse protrusion is equipped at the top of diffractive plate, which can further increase acoustic wave diffraction loss.The top denoising device also wraps
Lateral partitions and bottom plate are included, lateral partitions and bottom plate can increase top device rigidity, so that top device is solid and reliable.Bottom plate position
Setting should be determined according to noise source characteristic in application environment.Lateral partitions, bottom plate and diffractive plate form chamber structure, can be changed
Top sound field further decreases top diffraction sound, improves noise reduction effect.The device further includes attached plate, and attached plate is located at two diffractive plates
Between, play the role of balance left and right sides weight, so that device center of gravity is located in mid-plane.It is provided in the bottom of device
Mounting seat.
The present apparatus applies multinomial measure to improve top diffraction acoustic loss, can effectively improve noise reduction effect.Top includes
Multiple diffractive plates, and diffractive plate arrangement so that sound wave around top reach receiving point when need to undergo multiple diffraction, generate
Larger diffraction loss.Outside curve plate and the raised structures being arranged at the top of diffractive plate can further increase sound wave diffraction damage
It loses, and biggish acoustic shadow can be formed, so that the acoustic energy reached at receiving point substantially reduces.
Detailed description of the invention:
Fig. 1 is the cross sectional view of embodiment 1；
Fig. 2 is the lateral structure schematic diagram of embodiment 1.
Specific embodiment:
Embodiment 1
Diffractive plate 1 has several, is the important component of the present apparatus.Outermost diffractive plate 1-1 and diffractive plate 1-2
For curved slab, remaining diffractive plate is straight panel.Diffractive plate is asymmetric arrangement, and intermediate diffractive plate has maximum height, to two sides
Successively reduce.Side diffractive plate average height is lower compared to the other side.Each diffractive plate meets the diffractive plate vertex positioned at adjacent
The top of two sides diffractive plate vertex line.Raised structures 2 are obtuse structure, are located at 1 top of diffractive plate, can play increase diffraction
The effect of loss.Bottom plate 3 is located between two diffractive plates.Lateral partitions 4 are surface plate, cloth vertical with diffractive plate 1 and bottom plate 3
It sets, is alternatively arranged.Diffractive plate 1, bottom plate 3 and lateral partitions 4 form chamber structure.Mounting seat 5 is located at the bottom of device, the portion
Divide and is attached with sound barrier main body.Add-in card 7 is attachment, primarily serves the effect of balancing device center of gravity.In bottom plate and installation
Pedestal 5 is equipped with drain aperture 6.
Though the present apparatus is described by previous embodiment, but still can change its form and details, in the essence for not departing from the present apparatus
The lower production of mind, aforementioned is the most reasonable application method of the present apparatus, only one of the mode that can be embodied of the present apparatus, but not
As limit.
Claims (7)
1. a kind of asymmetric enhances diffraction type sound barrier top denoising device, it is characterised in that: including several diffractive plates and
Mounting seat positioned at diffractive plate bottom end, top includes the chamber structure being made of diffractive plate, lateral partitions and bottom plate, described to spread out
Penetrating has raised structures at the top of plate, wherein outermost diffractive plate is curved slab, several diffractive plates are asymmetric arrangement.
2. a kind of asymmetric according to claim 1 enhances diffraction type sound barrier top denoising device, it is characterised in that:
Several described diffractive plates are curved slab in addition to outermost, remaining diffractive plate is straight panel.
3. a kind of asymmetric according to claim 1 enhances diffraction type sound barrier top denoising device, it is characterised in that:
Centrally located diffractive plate is higher than other diffractive plates in several described diffractive plates.
4. a kind of asymmetric according to claim 3 enhances diffraction type sound barrier top denoising device, it is characterised in that:
The height of several diffractive plates is successively reduced from centre to two sides.
5. a kind of asymmetric according to claim 4 enhances diffraction type sound barrier top denoising device, it is characterised in that:
The height parameter of several diffractive plates meets the vertex of diffractive plate in the top of two sides neighboring diffraction plate vertex line, sound wave
Some diffractive plate cannot be crossed to go directly next diffractive plate.
6. a kind of asymmetric according to claim 1 enhances diffraction type sound barrier top denoising device, it is characterised in that:
Several described diffractive slabs at a chamber in be equipped with add-in card for adjusting top device two sides weight proportion.
7. a kind of asymmetric according to claim 1 enhances diffraction type sound barrier top denoising device, it is characterised in that:
The bottom plate and mounting seat are equipped with drain aperture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821598315.0U CN208949758U (en) | 2018-09-29 | 2018-09-29 | Asymmetric enhances diffraction type sound barrier top denoising device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821598315.0U CN208949758U (en) | 2018-09-29 | 2018-09-29 | Asymmetric enhances diffraction type sound barrier top denoising device |
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| CN208949758U true CN208949758U (en) | 2019-06-07 |
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| CN201821598315.0U Active CN208949758U (en) | 2018-09-29 | 2018-09-29 | Asymmetric enhances diffraction type sound barrier top denoising device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109137766A (en) * | 2018-09-29 | 2019-01-04 | 哈尔滨工业大学 | Asymmetric enhances diffraction type sound barrier top denoising device |
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2018
- 2018-09-29 CN CN201821598315.0U patent/CN208949758U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109137766A (en) * | 2018-09-29 | 2019-01-04 | 哈尔滨工业大学 | Asymmetric enhances diffraction type sound barrier top denoising device |
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