CN204940146U - A kind of fastening type high speed railway sound barrier - Google Patents
A kind of fastening type high speed railway sound barrier Download PDFInfo
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- CN204940146U CN204940146U CN201520486154.6U CN201520486154U CN204940146U CN 204940146 U CN204940146 U CN 204940146U CN 201520486154 U CN201520486154 U CN 201520486154U CN 204940146 U CN204940146 U CN 204940146U
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Abstract
The utility model relates to a kind of fastening type high speed railway sound barrier, be provided with sound barrier body, described sound barrier body comprises load shell and sound absorption assembly, described load shell is up and down in recessed boss structure, buckling groove is formed above boss, first vibration damping sound arrester or the second vibration damping sound arrester are installed in the below of concave station, in the middle of load shell, sound absorption assembly is installed, acoustic isolater, sound absorber, canvas cloth are fixed by connector by sound absorption assembly, be arranged on upper fastener and lower fastener, and be fixed in load shell.Therefore the utility model is compared with the sound barrier of same thickness, saves the sound absorption material of 2/3, is provided with the sound insulation factor that high-strength sound barrier improves sound barrier, significantly improves the sound insulation factor of sound barrier; Be highly resistant to wind to carry, reduce distortion, improve stability; The monolithic devices of load housing can be ensured very well, improve load effect; Reduce the vibration because External Force Acting brings and gap leakage sound.
Description
Technical field
The utility model belongs to sound absorbing-insulating barrier technical field, particularly relates to a kind of fastening type high speed railway sound barrier.
Background technology
At present, sound absorbing-insulating barrier is that the sound absorption arranged between noise source and recipient and the shielding harness that insulates against sound, it makes recipient be placed in sound shadow region, has good isolation effect to sonic propagation of wherein making an uproar for absorb and go directly sonic propagation in noise isolation source.Developing rapidly of present high-speed railway, produces a large amount of noise pollutions, and sound barrier takes up an area few, and fabrication and installation are convenient and swift, and construction investment is suitable for, and has become the important measures that traffic noise pollution controls.Sound wave, in communication process, runs into sound barrier and can reflect, project and diffraction three kinds of phenomenons.Usually we think that sound barrier can stop through sonic propagation, and make system penetrate sound to have enough decay, and the impact of projection sound is negligible.Therefore, the sound absorption effect of sound barrier generally can adopt noise abatement amount to represent, it reflects the ability of the above-mentioned two kinds of shielding entrant sounds of sound barrier.Between sound source and receiving station, insert a sound barrier, if sound barrier endless, sound wave can only be gone over from the top diffraction of barrier, and forms a sound shadow region thereafter, just as light is blocked formation shade by object.In this sound shadow region, people can feel that noise obviously reduces, the noise reduction effect of Here it is sound barrier.Between sound source and recipient, insert a facility, make Acoustic Wave Propagation have a significant additional attenuation, thus weaken the influence of noise in the certain area at recipient place, such facility is called as sound barrier.This sound barrier is widely used in countries in the world, especially the developing rapidly of high-speed railway in recent years, various countries have also carried out many research to high speed railway sound barrier, also conduct in-depth research and a large amount of practices in the design and construction of high speed railway sound barrier.
Current known noise barrier structure form mainly contains following several: flap type: do supporting body with blinds elongated hole, inner filling sucting sound material (as rock wool etc.), is one of sound barrier form of extensive use the most.Facing to noise source one side be blinds elongated hole, internal cavities all fills out sound absorption material (as rock wool, centrifugally glass-wool, fiberboard etc.).Perforation template: doing supporting body with perforated plate, inner filling sucting sound material (as rock wool etc.), is one of most widely used sound barrier form.For the known noise barrier structure schematic diagram of one.Described sound barrier 101 is perforated plate facing to the panel 102 of noise source one side, the whole filling sucting sound material 104 (as rock wool, centrifugally glass-wool, fiberboard etc.) of internal cavities, backboard 103 away from noise source side is the perforated plate identical with panel 102, or adopts the metal sheet with some strength.Concavo-convex of the formation up and down of described panel 102 and backboard 103.In use, by multiple identical sound barrier 101, convex-concave interlocks to stack and puts, composition sound barrier.In addition, No. 03206897th, Chinese patent, " a kind of absorbent lined barrier board " is also a kind of perforate sound barrier.No. 00263317, Chinese patent, " folded plate type composite sound absorbing screen " discloses a kind of absorbent lined barrier be made up of underframe and upper casing, it is filled with foam glass in underframe, is microperforated panel before upper casing, and this microperforated panel forms with the upper casing being positioned at its back a cavity.Above-mentioned current known filled-type sound barrier, all adopt different opening forms, inner all fillings sound absorption material, for reaching enough sound absorption and insulation effects, sound barrier has certain thickness, general about 100-200mm, but this known noise barrier structure is all in total defect: must fill a large amount of sound absorption materials, sound absorption material quality is light simultaneously, and defening effect is not good, causes the overall defening effect of sound barrier undesirable.Disclosed in No. 00263317, described Chinese patent, " folded plate type composite sound absorbing screen " its underpart is filled-type sound barrier, its top is a hollow cavity, and therefore, its underpart exists above-mentioned defect equally, and its top is only a hollow cavity, its defening effect comparatively bottom is poorer.No. 200820109162.9, Chinese patent, " a kind of sound barrier " discloses one and is made up of panel and backboard, sound absorber is provided with between panel and backboard, sound absorber and form cavity layer between panel and backboard, the noise barrier of hollow before and after being formed, therefore can significantly improve sound barrier intensity, but its sound absorber is fixing unreliable, reduces its application life.The installation of metal current formula sound barrier adopts i iron to make column, sound barrier convex-concave being interlocked to stack inserts in I-shaped steel tank, this structure needs I-shaped steel tank to be greater than sound barrier thickness, and the force part of sound barrier is front and rear housings, reduces the application life of sound barrier.
Existing conventional acoustic barrier is inner all fills sound absorption material, and sound absorption material consumption is many, simultaneously sound absorption poor effect.
Utility model content
In order to solve, existing conventional acoustic barrier is inner all fills sound absorption material to the utility model, sound absorption material consumption is many, simultaneously sound absorption poor effect technical problem and the fastening type high speed railway sound barrier that a kind of structure is simple, easy to install, increase work efficiency is provided.
The technical scheme that the utility model is taked for the technical problem existed in solution known technology is:
Fastening type high speed railway sound barrier of the present utility model, described fastening type high speed railway sound barrier is provided with sound barrier body, described sound barrier body comprises load shell and sound absorption assembly, described load shell is up and down in recessed boss structure, buckling groove is formed above boss, first vibration damping sound arrester or the second vibration damping sound arrester are installed in the below of concave station, in the middle of load shell, sound absorption assembly is installed, sound absorption assembly by connector by acoustic isolater, sound absorber, canvas cloth is fixed, be arranged on upper fastener and lower fastener, and be fixed in load shell.
Further, the plane of described front casing is covered with the aperture of honeycomb arrangement, the plane of described rear casing is furnished with vertical beading.
Further, described load shell is flat rectangular body structure, comprises front casing and rear casing.
Further, described load shell and sound absorption assembly form sandwich-like, form respectively air layer in front and back.
Further, described acoustic isolater, sound absorber, canvas cloth are bolted.
Compared with known technology, feature of the present utility model and advantage are:
1, structure of the present utility model decreases the consumption of porous absorption material compared with the sound barrier of known features, compared with the sound barrier of same thickness, saves the sound absorption material of 2/3.
2, structure of the present utility model, the sound insulation factor that high-strength sound barrier improves sound barrier is provided with in the middle of load shell, arrive at test in laboratory, before adopting, the noise barrier sound insulation factor of hollow is larger than adopting the noise barrier sound insulation factor of the inner all filling sucting sound materials of perforated plate, significantly improves the sound insulation factor of sound barrier.
3, sound barrier of the present utility model is adopted, middle high-strength sound barrier can improve the intensity of sound barrier, make the utility model can be adapted to High Speed Railway both sides, improve defening effect, and when wind carry or rapid by time produce gas shock sound barrier time, the utility model is highly resistant to wind and carries, reduce distortion, improve stability, so the noise barrier of hollow can for high-speed railway traffic before and after adopting.
4, structure of the present utility model, adopt the fastening structure of concavo-convex up and down, and be provided with buckling groove, this structure can ensure the monolithic devices of load housing very well, improves load effect.
5, the utility model structure, is provided with special vibration damping sound arrester at concave station place, and the gap produced when ensure that sound barrier superposes, can reduce the vibration because External Force Acting brings and gap leakage sound.
6, the utility model structure, all has bossing in the middle of the upper fastener of employing and lower fastener, can accurately locate sound absorption assembly, improves stability and the application life of acoustic absorptive member.
Sound barrier of the present utility model solves conventional acoustic barrier inner all fillings sound absorption material, and sound absorption material consumption is many, and the shortcoming of sound absorption poor effect, has saved material cost simultaneously, reaches again better sound absorption effect simultaneously.
Accompanying drawing explanation
Fig. 1 is the fastening type sound barrier structure for high speed railways schematic diagram that the utility model embodiment provides;
Fig. 2 is the front casing structural representation that the utility model embodiment provides;
Fig. 3 is the rear casing structural representation that the utility model embodiment provides;
Fig. 4 is the fastening type high speed railway sound barrier overlaying structure schematic diagram that the utility model embodiment provides;
In figure: 1, sound barrier body; 2, load shell; 3, sound absorption assembly; 4, front casing; 5, rear casing; 6, buckling groove; 7, air layer; 8, acoustic isolater; 9, sound absorber; 10, canvas cloth; 11, connector; 12, upper fastener; 13, lower fastener; 14, the first vibration damping sound arrester; 15, the second vibration damping sound arrester; 16, support member.
Detailed description of the invention
For summary of the invention of the present utility model, Characteristic can be understood further, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows.
Below in conjunction with accompanying drawing, structure of the present utility model is described in detail:
As shown in Figure 1-Figure 3, the fastening type high speed railway sound barrier of the utility model embodiment mainly comprises: sound barrier body 1, load shell 2, sound absorption assembly 3, front casing 4, rear casing 5, buckling groove 6, air layer 7, acoustic isolater 8, sound absorber 9, canvas cloth 10, connector 11, upper fastener 12, lower fastener 13, first vibration damping sound arrester 14;
Sound barrier body 1, be made up of a load shell 2 and a sound absorption assembly 3, load shell 2 is in flat rectangular body structure, comprise front casing 4 and rear casing 5, load shell about 2 is in recessed boss structure, buckling groove 6 is formed above boss, first vibration damping sound arrester 14 or the second vibration damping sound arrester 15 is installed in the below of concave station, in the middle of load shell 2, sound absorption assembly 3 is installed, load shell 2 and sound absorption assembly 3 form sandwich-like, air layer 7 is form respectively in front and back, sound absorption assembly 3 by connector 11 by acoustic isolater 8, sound absorber 9, canvas cloth 10 is fixed, integral installation is on upper fastener 12 and lower fastener 13, and be fixed in load shell 2.Front casing 4 adopts perforated plate; Rear casing 5 adopts swaged plate.
As shown in Figure 4, the fastening type high speed railway sound barrier overlaying structure schematic diagram of the utility model embodiment, the below of sound barrier body 1 is provided with the second vibration damping sound arrester 15; Support member 16 is supports of sound barrier body in installation process.
In the utility model, the perisporium on front casing and the upper and lower both sides of rear casing is provided with convex and spill flanging, and boss place is provided with buckling groove specially up, can be that front and back shell fastens locking mutually, form complete load shell.
There is upper and lower fastener top, described load housing cross section, for upper and lower the fixing of sound absorption assembly; Sound absorption assembly is made up of acoustic isolater, sound absorber, canvas cloth, and acoustic isolater, sound absorber, canvas cloth are bolted; The plane of described front casing is covered with the aperture of honeycomb arrangement, only has the little belt-like zone of close lower edges there is no hole.
The plane of described rear casing is furnished with vertical beading, described sound barrier has the column of I-shaped cross-section, the high speed railway sound barrier in the vertical direction of fastening type is stacked up by concavo-convex, and be fixed in i shaped cross section groove, the high speed railway sound barrier in the vertical direction of fastening type is by having laid vibration damping sound arrester in centre after concavo-convex superposition, and the first vibration damping sound arrester and the second vibration damping sound arrester have different form of structure in bottom and middle part.
The above is only to preferred embodiment of the present utility model, not any pro forma restriction is done to the utility model, every according to technical spirit of the present utility model to any simple modification made for any of the above embodiments, equivalent variations and modification, all belong in the scope of technical solutions of the utility model.
Claims (4)
1. a fastening type high speed railway sound barrier, it is characterized in that, described fastening type high speed railway sound barrier is provided with sound barrier body, described sound barrier body comprises load shell and sound absorption assembly, described load shell is up and down in recessed boss structure, buckling groove is formed above boss, first vibration damping sound arrester or the second vibration damping sound arrester are installed in the below of concave station, in the middle of load shell, sound absorption assembly is installed, sound absorption assembly by connector by acoustic isolater, sound absorber, canvas cloth is fixed, be arranged on upper fastener and lower fastener, and be fixed in load shell.
2. fastening type high speed railway sound barrier as claimed in claim 1, it is characterized in that, described load shell is flat rectangular body structure, comprises front casing and rear casing, the plane of described front casing is covered with the aperture of honeycomb arrangement, the plane of described rear casing is furnished with vertical beading.
3. fastening type high speed railway sound barrier as claimed in claim 1, it is characterized in that, described load shell and sound absorption assembly form sandwich-like, form respectively air layer in front and back.
4. fastening type high speed railway sound barrier as claimed in claim 1, it is characterized in that, described acoustic isolater, sound absorber, canvas cloth are bolted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520486154.6U CN204940146U (en) | 2015-07-07 | 2015-07-07 | A kind of fastening type high speed railway sound barrier |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520486154.6U CN204940146U (en) | 2015-07-07 | 2015-07-07 | A kind of fastening type high speed railway sound barrier |
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| CN204940146U true CN204940146U (en) | 2016-01-06 |
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| CN201520486154.6U Active CN204940146U (en) | 2015-07-07 | 2015-07-07 | A kind of fastening type high speed railway sound barrier |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113089515A (en) * | 2021-04-09 | 2021-07-09 | 四川云路科技有限公司 | Automatic closed sound barrier of formula of unloading |
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2015
- 2015-07-07 CN CN201520486154.6U patent/CN204940146U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113089515A (en) * | 2021-04-09 | 2021-07-09 | 四川云路科技有限公司 | Automatic closed sound barrier of formula of unloading |
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