CN215752382U - Noise reduction air duct for railway vehicle - Google Patents
Noise reduction air duct for railway vehicle Download PDFInfo
- Publication number
- CN215752382U CN215752382U CN202121220133.1U CN202121220133U CN215752382U CN 215752382 U CN215752382 U CN 215752382U CN 202121220133 U CN202121220133 U CN 202121220133U CN 215752382 U CN215752382 U CN 215752382U
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- noise reduction
- uproar
- making
- air duct
- coverboard
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Abstract
The utility model discloses a noise reduction air duct for a railway vehicle. This wind channel includes the wind channel body and sets up the subassembly of making an uproar that falls in wind channel body one side at least, the subassembly of making an uproar that falls includes the coverboard with wind channel body fixed connection, the downside of coverboard is fixed with the bounding wall all around, the downside cooperation of bounding wall and coverboard forms the region of making an uproar that falls, the regional sound absorbing material layer that is equipped with of making an uproar of falling of coverboard downside, sound absorbing material layer outside interval is equipped with a plurality of orifice plates, be equipped with a plurality of holes on the orifice plate. According to the utility model, the noise reduction assembly is arranged on the air duct body, the noise reduction assembly can rub and resonate with the pore plate through the pore plate and the suction material, so that sound energy is converted into heat energy, and the sound absorption material layer absorbs residual partial noise, so that the noise reduction effect is realized, and the installation and the use are convenient.
Description
Technical Field
The utility model relates to the technical field of air conditioning systems of railway vehicles, in particular to a noise reduction air duct for a railway vehicle.
Background
With the rapid development of economy in China, the number of trips and the pressure brought by the trips are continuously increased, and the rail vehicle can easily solve the problem by the characteristics of high speed and punctuality, so that the rail vehicle becomes a main vehicle for each large city and among the large cities in China. The air conditioning system is arranged on the rail vehicle and generally comprises an air conditioning unit arranged at the top of a carriage, and the air conditioning unit sends cold air, hot air or natural air into the carriage through an air duct, so that the temperature in the carriage is adjusted, and a comfortable environment is created for passengers. Meanwhile, certain noise is generated during the operation of the air conditioning unit and the flowing of air in the air duct, and the problem of reducing the noise brought by the air conditioning system becomes the current problem to be solved.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a noise reduction air duct for a railway vehicle, aiming at the defects in the prior art.
In order to achieve the purpose, the utility model provides a noise reduction air duct for a railway vehicle, which comprises an air duct body and a noise reduction assembly at least arranged on one side of the air duct body, wherein the noise reduction assembly comprises a shell plate fixedly connected with the air duct body, surrounding plates are fixed on the periphery of the lower side of the shell plate, the surrounding plates are matched with the lower side of the shell plate to form a noise reduction area, a sound absorption material layer is arranged in the noise reduction area on the lower side of the shell plate, a plurality of pore plates are arranged on the outer side of the sound absorption material layer at intervals, and a plurality of holes are formed in the pore plates.
Furthermore, the outer side of the sound-absorbing material layer is provided with a pressing net.
Further, the downside of shell plate is equipped with a plurality of erection columns, the erection column alternates in proper order and presses net and a plurality of orifice plate setting, it all is equipped with the spacer sleeve to press between net and shell plate and the orifice plate and between a plurality of orifice plates, the outside at the erection column is established to the spacer sleeve cover, the lower extreme threaded connection of erection column has the lock sleeve.
Furthermore, the shell plate is provided with a jack, the mounting column penetrates through the jack from top to bottom, and the upper end of the mounting column is provided with a limiting block.
Further, the spacer comprises a rubber sleeve.
Further, the air duct body is provided with a mounting opening, a mounting flange is fixed on the outer side of the mounting opening, and the mounting flange is connected with the shell plate through bolts.
Further, the pore plates comprise 2 to 3 pores, and the pores on two adjacent pore plates are arranged in a staggered mode.
Further, the sound-absorbing material layer comprises a glass wool layer.
Furthermore, two ends of the air duct body are respectively provided with a connecting flange.
Has the advantages that: according to the utility model, the noise reduction assembly is arranged on the air duct body, the noise reduction assembly can rub and resonate with the pore plate through the pore plate and the suction material, so that sound energy is converted into heat energy, and the sound absorption material layer absorbs residual partial noise, so that the noise reduction effect is realized, and the installation and the use are convenient.
Drawings
FIG. 1 is a schematic structural diagram of a noise reduction duct for a railway vehicle according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of an air duct body according to an embodiment of the present invention;
fig. 3 is a partially enlarged schematic view of the area a in fig. 1.
Detailed Description
The present invention will be further illustrated with reference to the accompanying drawings and specific examples, which are carried out on the premise of the technical solution of the present invention, and it should be understood that these examples are only for illustrating the present invention and are not intended to limit the scope of the present invention.
As shown in fig. 1 to 3, an embodiment of the present invention provides a noise reduction duct for a rail vehicle, including a duct body 1, where a cross section of the duct body 1 may be a rectangle, but is not limited thereto. At least one side at wind channel body 1 is equipped with the subassembly of making an uproar that falls, and the subassembly of making an uproar that falls can set up in wind channel body 1's both sides or all around according to actual need, and the regional more noise reduction effect that falls that sets up is better. This subassembly of making an uproar falls includes coverplate 2, coverplate 2 and 1 fixed connection in wind channel body, is fixed with bounding wall 3 around the downside of coverplate 2, and the downside cooperation of bounding wall 3 and coverplate 2 forms the region of making an uproar falls, is equipped with sound absorbing material layer 4 in the region of making an uproar falls of coverplate 2 downside, is equipped with a plurality of orifice plates 5 at sound absorbing material layer 4 outside interval, is equipped with a plurality of holes 6 on the orifice plate. When the noise in the air duct body 1 passes through the holes 6, the noise and the hole plates 5 rub and resonate to convert sound energy into heat energy, and the sound absorption material layer 4 absorbs the sound of the residual partial noise, so that the noise reduction effect is realized.
The sound absorbing material layer 4 is preferably a glass wool layer, and in order to allow the sound absorbing material layer 4 to be stably disposed in the noise reduction region, a mesh 7 is preferably provided outside the sound absorbing material layer 4. In order to facilitate installation of the net pressing 7 and the pore plates 5, a plurality of mounting columns 8 are preferably arranged on the lower side of the shell plate 2, through holes 9 are formed in the net pressing 7 and the pore plates 5, and the mounting columns 8 penetrate through the net pressing 7 and the pore plates 5 in sequence. Spacer bushes 9 are arranged between the press net 7 and the shell plate 2 and the pore plates 5 and between the pore plates 5. The spacer 9 is preferably a rubber sleeve, the spacer 9 is sleeved on the outer side of the mounting post 8, and under the action of the spacer 9, the corresponding interval arrangement can be kept between the net pressing 7 and the shell plate 2, between the net pressing 7 and the pore plate 5, and between the adjacent pore plates 5. The lower end of the mounting column 8 is in threaded connection with a lock sleeve 10, and the lock sleeve 10 can fix the pore plate 5, the press net 7, the spacer 9 and the like on the mounting column 8. The erection column 8 can the beading in the downside of coverboard 2, as preferred embodiment, is equipped with jack 11 on coverboard 2, and the erection column 8 passes jack 11 setting from top to bottom, is equipped with stopper 12 in the upper end of erection column 8. The lower surface of the lowest pore plate 5 is preferably flush with the inner surface of the air duct body 1, and a counter bore matched with the lock sleeve 10 is preferably arranged on the lowest pore plate 5, so that the lower surface of the lock sleeve 10 is flush with the pore plate 5.
In order to facilitate the installation of the noise reduction assembly on the air duct body 1, an installation opening 13 is formed in the air duct body 1, an installation flange 14 is fixed on the outer side of the installation opening 13, and the installation flange 14 is connected with the shell plate 2 through a plurality of bolts 15. The two ends of the air duct body 1 are respectively provided with a connecting flange 16, and the air duct in the carriage is formed by connecting a plurality of air duct bodies 1 through the connecting flanges 16 by bolts. The pore plates 5 can be 2 to 3, the diameter of the pores 6 is preferably about 2mm, the thickness, the opening rate and the interval of the pore plates 5 can be selected according to actual needs, and the pores 6 on two adjacent pore plates 5 are preferably arranged in a staggered mode.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that other parts not specifically described are within the prior art or common general knowledge to those of ordinary skill in the art. Without departing from the principle of the utility model, several improvements and modifications can be made, and these improvements and modifications should also be construed as the scope of the utility model.
Claims (9)
1. The utility model provides a rail vehicle is with falling wind channel of making an uproar, its characterized in that, includes wind channel body and the at least subassembly of making an uproar that falls that sets up in wind channel body one side, fall the subassembly of making an uproar include with wind channel body fixed connection's coverboard, the downside of coverboard is fixed with the bounding wall all around, the downside cooperation of bounding wall and coverboard forms the region of making an uproar that falls, the regional sound absorbing material layer that is equipped with of making an uproar of coverboard downside falls, sound absorbing material layer outside interval is equipped with a plurality of orifice plates, be equipped with a plurality of holes on the orifice plate.
2. The noise reduction duct for railway vehicles according to claim 1, wherein a pressing net is provided on the outer side of the sound absorption material layer.
3. The noise reduction air duct for the railway vehicle as claimed in claim 2, wherein a plurality of mounting posts are arranged on the lower side of the shell plate, a pressure net and a plurality of pore plates are sequentially inserted into the mounting posts, spacers are arranged between the pressure net and the shell plate and between the pressure net and the pore plates, the spacers are sleeved on the outer sides of the mounting posts, and lock sleeves are connected to the lower ends of the mounting posts through threads.
4. The noise reduction air duct for the railway vehicle as claimed in claim 3, wherein the shell plate is provided with a jack, the mounting post passes through the jack from top to bottom, and the upper end of the mounting post is provided with a limiting block.
5. The noise reduction duct for rail vehicles according to claim 3, characterized in that the spacer comprises a rubber sleeve.
6. The noise reduction air duct for the railway vehicle as claimed in claim 1, wherein a mounting opening is formed in the air duct body, a mounting flange is fixed to the outer side of the mounting opening, and the mounting flange is connected with the shell plate through bolts.
7. The noise reduction duct for railway vehicles according to claim 1, wherein the number of the perforated plates is 2 to 3, and the holes of two adjacent perforated plates are arranged in a staggered manner.
8. The noise reduction duct for rail vehicles according to claim 1, wherein the sound absorbing material layer comprises a glass wool layer.
9. The noise reduction duct for railway vehicles according to claim 1, wherein the two ends of the duct body are respectively provided with a connecting flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121220133.1U CN215752382U (en) | 2021-06-02 | 2021-06-02 | Noise reduction air duct for railway vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121220133.1U CN215752382U (en) | 2021-06-02 | 2021-06-02 | Noise reduction air duct for railway vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215752382U true CN215752382U (en) | 2022-02-08 |
Family
ID=80098984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121220133.1U Active CN215752382U (en) | 2021-06-02 | 2021-06-02 | Noise reduction air duct for railway vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215752382U (en) |
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2021
- 2021-06-02 CN CN202121220133.1U patent/CN215752382U/en active Active
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