CN208884385U - Interference noise reducing device at the top of sound barrier - Google Patents
Interference noise reducing device at the top of sound barrier Download PDFInfo
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- CN208884385U CN208884385U CN201721179027.7U CN201721179027U CN208884385U CN 208884385 U CN208884385 U CN 208884385U CN 201721179027 U CN201721179027 U CN 201721179027U CN 208884385 U CN208884385 U CN 208884385U
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Abstract
The utility model discloses the interference noise reducing devices at the top of a kind of sound barrier, interference noise reducing device at the top of sound barrier, it is connected to the top of sound barrier, and the sound wave reflecting part including interconnected at least two with the U-shaped operatic tunes, the depth of the U-shaped operatic tunes of each sound wave reflecting part are all different.Interference noise reducing device at the top of the utility model sound barrier, several sound wave reflecting parts with the different depth U-shaped operatic tunes are assembled, the bottom of U-shaped operatic tunes after a part of sound wave enters device in different depth is reflected, sound path by increasing incident acoustic wave makes its counteracting of inversely adding with sound wave outside device, achievees the purpose that noise reduction sound-deadening.Compared with prior art, the utility model structure is simple, easily manufactured and installed, and assembling pattern can be adjusted with construction environment, beautiful after construction, good weatherability.The utility model has wider frequency range, has good regulation effect to sound barrier top diffraction sound wave, also there is good noise reduction effect to Middle and low frequency noise.
Description
Technical field
The utility model relates to the interference noise reducing devices at the top of a kind of sound barrier, more particularly to one kind to be applied to city rail
Interference noise reducing device at the top of the sound barrier of traffic.
Background technique
While urban track traffic provides people with convenience quick, comfortable safe and clean energy-efficient trip mode, produce
Raw noise exerts a certain influence to the life of nearby residents, and building sound barrier is a kind of effective control measures.
There are the following problems and deficiency for the application of sound barrier at present: 1, the wheel-rail noise that train generates is in opposite sound barrier
Shield multiple reflections between body and train side, formed on sound barrier top and concentrate sound source, the concentration sound source on top can bypass sound
Barrier top greatly reduces the noise reduction effect of sound barrier；2, the height of sound barrier is restricted, to the diffraction on sound barrier top
Sound is difficult to administer, and sound barrier top becomes quadratic noise source；3, with the increase of sound barrier height, sight is not only blocked, and
Its engineering cost greatly improves, application security is greatly reduced；4, conventional upright type sound barrier can not effectively administer sound barrier top
The diffraction sound at end, and there is low ebb in its insertion loss under certain specific frequencies.
Utility model content
The purpose of this utility model is that proposing the interference noise reducing device at the top of a kind of sound barrier, the improvement of diffraction sound is imitated
Fruit is good, can be effectively reduced the noise of specific frequency.
In order to achieve the above object, the utility model provides a kind of technical solution: the interference noise reducing dress at the top of sound barrier
It sets, it is connected to the top of sound barrier, and the sound wave reflecting part including interconnected at least two with the U-shaped operatic tunes, each
The depth of the U-shaped operatic tunes of sound wave reflecting part is all different.
Further, each sound wave reflecting part all has connection structure, and sound wave reflecting part is connected to sound by connection structure
The top of barrier is connected on another sound wave reflecting part adjacent thereto.
Further, connection structure includes the suspension groove being inverted U shape.
Further, the top of the rear wall of sound wave reflecting part is arranged in suspension groove, and sound wave reflecting part passes through suspension groove
It is suspended on the top of sound barrier or is suspended on the top of the front side wall of another sound wave reflecting part adjacent thereto.
Further, according to direction from back to front, the depth of the U-shaped operatic tunes of each sound wave reflecting part is sequentially reduced.
Further, the bottom of sound wave reflecting part offers the discharge outlet of perforation to the U-shaped operatic tunes.
Further, sound-absorbing material is provided on the inner wall of the U-shaped operatic tunes, it is preferable that sound-absorbing material is attached to the U-shaped operatic tunes
On former and later two inner walls.
Further, sound wave reflecting part uses aluminum alloy material.
Further, the cross section of sound wave reflecting part is U-shaped.
By using above-mentioned technical proposal, interference noise reducing device at the top of the utility model sound barrier has several not
Sound wave reflecting part with the depth U-shaped operatic tunes is assembled, and the frequency range that interference is eliminated the noise can be widened.When a part of sound wave enters
The bottom of the U-shaped operatic tunes after device in different depth is reflected, and the sound path by increasing incident acoustic wave makes itself and sound outside device
Wave inversely adds counteracting, achievees the purpose that noise reduction sound-deadening.Compared with prior art, the utility model structure is simple, easy to process
And installation, assembling pattern can be adjusted with construction environment, beautiful after construction, good weatherability.The utility model has wider frequency
Range has good regulation effect to sound barrier top diffraction sound wave, also there is good noise reduction effect to Middle and low frequency noise.
The above description is merely an outline of the technical solution of the present invention, in order to better understand the skill of the utility model
Art means, and can be implemented in accordance with the contents of the specification, below on the preferred embodiment of the present invention and the accompanying drawings in detail
It describes in detail bright as after.
Detailed description of the invention
Attached drawing 1 is the cross-sectional structure signal of the interference noise reducing device in the utility model embodiment one at the top of sound barrier
Figure；
Attached drawing 2 is the schematic perspective view of the interference noise reducing device in the utility model embodiment one at the top of sound barrier；
Attached drawing 3 is the schematic perspective view of the interference noise reducing device in the utility model embodiment two at the top of sound barrier；
Attached drawing 4 is the schematic perspective view of the interference noise reducing device in the utility model embodiment three at the top of sound barrier.
Figure label are as follows:
1, sound wave reflecting part；2, the U-shaped operatic tunes；3, bolt；4, nut；5, suspension groove；6, sound-absorbing material；7, through-hole；8, it arranges
Water hole.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.Below
Embodiment is not intended to limit the scope of the present invention for illustrating the utility model.
Embodiment one
Referring to attached drawing 1 and attached drawing 2, the interference noise reducing device at the top of sound barrier in the present embodiment, it is connected to sound barrier
Top, and including interconnected at least two with the U-shaped operatic tunes 2 sound wave reflecting part 1, the U-shaped of each sound wave reflecting part 1
The depth of the operatic tunes 2 is all different.
In the present embodiment, sound wave reflecting part 1 uses aluminum alloy material.The cross section of sound wave reflecting part 1 is U-shaped.
In a kind of highly preferred embodiment, according to direction from back to front, the U-shaped operatic tunes of each sound wave reflecting part
Depth be sequentially reduced.Front-rear direction described in the present embodiment is defined as: the direction towards sound barrier of sound wave reflecting part is
Afterwards, before the direction away from sound barrier of sound wave reflecting part is.
Each sound wave reflecting part 1 all has connection structure, and sound wave reflecting part 1 is connected to the top of sound barrier by connection structure
Portion is connected on another sound wave reflecting part 1 adjacent thereto.
In a kind of highly preferred embodiment, connection structure includes the suspension groove 5 being inverted U shape.Suspension groove setting exists
The top of the rear wall of sound wave reflecting part, sound wave reflecting part are suspended on the top of sound barrier by suspension groove or are suspended on phase therewith
The top of the front side wall of another adjacent sound wave reflecting part.More preferably, connection structure further includes bolt fastening structure, for making phase
It is firm that connection between adjacent two sound wave reflecting parts 1 more fastens.Specifically, bolt fastening mechanism is arranged in sound wave reflecting part 1
Side wall upper part or top, offer through-hole 7 on the front side wall and rear wall of sound wave reflecting part 1, bolt 3 passes through the through-hole
7, then connect and screw with nut 4.
In a kind of highly preferred embodiment, the bottom of sound wave reflecting part 1 offers the row of perforation to the U-shaped operatic tunes 2
The mouth of a river 8.
In the present embodiment, there are two sound wave reflecting parts 1, and the deeper sound wave reflecting part 1 of one of U-shaped operatic tunes 2 passes through certainly
The suspension groove 5 of body hangs on the top of sound barrier, the suspension groove that the shallower sound wave reflecting part 1 of another U-shaped operatic tunes 2 passes through itself
5 hang at the top of the front side wall of the deeper sound wave reflecting part 1 of the above-mentioned U-shaped operatic tunes 2, the two be fastened by bolts again structure carry out into
Fasten to one step.
Embodiment two
Referring to attached drawing 3, the difference of the interference noise reducing device at the top of sound barrier in the present embodiment and embodiment one is only that:
Sound-absorbing material 6 is provided on the inner wall of each U-shaped operatic tunes 2.Sound-absorbing material 6 in the present embodiment uses acoustical cotton.Preferably, it absorbs sound
Material 6 is attached on former and later two inner walls of the U-shaped operatic tunes 2.
Embodiment three
Referring to attached drawing 4, the difference of the interference noise reducing device at the top of sound barrier in the present embodiment and embodiment two is only that:
There are three sound wave reflecting parts 1, and wherein the deeper sound wave reflecting part 1 of the U-shaped operatic tunes 2 hangs on sound barrier by the suspension groove 5 of itself
Top, it is deeper that 2 depth of U-shaped operatic tunes sound wave reflecting part 1 placed in the middle by itself suspension groove 5 hangs on the above-mentioned U-shaped operatic tunes 2
At the top of the front side wall of sound wave reflecting part 1, the shallower sound wave reflecting part 1 of the U-shaped operatic tunes 2 hangs on above-mentioned U by the suspension groove 5 of itself
At the top of the front side wall of 2 depth of ideophone chamber sound wave reflecting part 1 placed in the middle.Pass through bolt again between two adjacent sound wave reflecting parts 1
Fastening structure is further fastened.
The above is only the preferred embodiment of the utility model, is not intended to limit the utility model, it is noted that
For those skilled in the art, without deviating from the technical principle of the utility model, it can also do
Several improvements and modifications out, these improvements and modifications also should be regarded as the protection scope of the utility model.
Claims (8)
1. the interference noise reducing device at the top of sound barrier, it is characterised in that: it is connected to the top of sound barrier, and including being connected with each other
At least two sound wave reflecting parts with the U-shaped operatic tunes, the depth of the U-shaped operatic tunes of each sound wave reflecting part is all different, according to
The depth in direction from back to front, the U-shaped operatic tunes of each sound wave reflecting part is sequentially reduced.
2. the interference noise reducing device at the top of sound barrier according to claim 1, it is characterised in that: each sound wave is anti-
The portion of penetrating all has connection structure, and sound wave reflecting part is connected to the top of sound barrier by the connection structure or is connected to phase therewith
On another adjacent sound wave reflecting part.
3. the interference noise reducing device at the top of sound barrier according to claim 2, it is characterised in that: the connection structure packet
Include the suspension groove being inverted U shape.
4. the interference noise reducing device at the top of sound barrier according to claim 3, it is characterised in that: the suspension groove is located at
The top of the rear wall of sound wave reflecting part, the sound wave reflecting part are suspended on the top of sound barrier by the suspension groove or hang
Hang over the top of the front side wall of another sound wave reflecting part adjacent thereto.
5. the interference noise reducing device at the top of sound barrier according to claim 1, it is characterised in that: the sound wave reflecting part
Bottom offer perforation to the U-shaped operatic tunes discharge outlet.
6. the interference noise reducing device at the top of sound barrier according to claim 1, it is characterised in that: the U-shaped operatic tunes
Sound-absorbing material is provided on inner wall.
7. the interference noise reducing device at the top of sound barrier according to claim 1, it is characterised in that: the sound wave reflecting part
Using aluminum alloy material.
8. the interference noise reducing device at the top of sound barrier according to claim 1, it is characterised in that: the sound wave reflecting part
Cross section be U-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721179027.7U CN208884385U (en) | 2017-09-14 | 2017-09-14 | Interference noise reducing device at the top of sound barrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721179027.7U CN208884385U (en) | 2017-09-14 | 2017-09-14 | Interference noise reducing device at the top of sound barrier |
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| Publication Number | Publication Date |
|---|---|
| CN208884385U true CN208884385U (en) | 2019-05-21 |
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ID=66489779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721179027.7U Active CN208884385U (en) | 2017-09-14 | 2017-09-14 | Interference noise reducing device at the top of sound barrier |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107401128A (en) * | 2017-09-14 | 2017-11-28 | 苏州大学 | Interference noise reducing device at the top of sound barrier |
| CN111119085A (en) * | 2020-01-16 | 2020-05-08 | 湖南省交通科学研究院有限公司 | Sound barrier with semi-cylindrical top protruding structure |
-
2017
- 2017-09-14 CN CN201721179027.7U patent/CN208884385U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107401128A (en) * | 2017-09-14 | 2017-11-28 | 苏州大学 | Interference noise reducing device at the top of sound barrier |
| CN111119085A (en) * | 2020-01-16 | 2020-05-08 | 湖南省交通科学研究院有限公司 | Sound barrier with semi-cylindrical top protruding structure |
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