CN214057422U - Be applied to structure of making an uproar falls in silence of carriage panel - Google Patents
Be applied to structure of making an uproar falls in silence of carriage panel Download PDFInfo
- Publication number
- CN214057422U CN214057422U CN202022841658.9U CN202022841658U CN214057422U CN 214057422 U CN214057422 U CN 214057422U CN 202022841658 U CN202022841658 U CN 202022841658U CN 214057422 U CN214057422 U CN 214057422U
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- carriage
- cold
- silence
- board
- sound insulation
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- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
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Abstract
The utility model relates to a be applied to the silence of carriage panel and fall the structure of making an uproar belongs to the silence of machineshop car carriage and falls the structure of making an uproar. The cold-proof nail is welded with the carriage board, a first sound insulation felt, a sound absorbing material and carbon fiber cotton are filled below the surface of a groove in the inner side of the carriage board, the first sound insulation felt, the sound absorbing material and the carbon fiber cotton are sequentially and tightly connected onto the cold-proof nail in a penetrating mode, a 3M adhesive film is bonded below the carriage board and the carbon fiber cotton, a second sound insulation felt and an aluminum sound absorbing board are sequentially connected onto the cold-proof nail in a penetrating mode below the 3M adhesive film, and a cold-proof nail cap sleeve is sleeved with the cold-proof nail and tightly presses the aluminum sound absorbing board. The advantage is novel structure, has reduced noise interference by a wide margin, travelling comfort when having promoted the train driver and driving, and satisfy holistic weight of train control, lightweight demand.
Description
Technical Field
The utility model belongs to the structure of making an uproar falls in the silence of machineshop car carriage especially indicates a structure of making an uproar falls in the silence of being applied to the carriage panel.
Background
At present, the box body of the engineering vehicle mute box is a carbon steel plate with the thickness of 3mm, a noise source is a device in a carriage, and the requirement on sound insulation of a cab side is higher. From the spectrum, the noise is mainly concentrated between the low frequency and the medium frequency, the noise reduction is 115dB in the interior test of the carriage, and the noise is required to be lower than 85dB outside 1m of the outer side of the carriage. The current 3mm carbon steel board sound insulation volume is 39.3dB, has satisfied original noise reduction requirement, but actual experience is relatively poor, and is still more serious to personnel's noise interference, needs to optimize on the scheme of making an uproar now, promotes vehicle operation on-vehicle personnel's comfort level.
Disclosure of Invention
The utility model provides a be applied to the silence of carriage panel and fall the structure of making an uproar to solve the more serious problem of carriage internal noise interference.
The utility model adopts the technical proposal that: the cold-proof nail is welded with the carriage board, a first sound insulation felt, a sound absorbing material and carbon fiber cotton are filled below the surface of a groove in the inner side of the carriage board, the first sound insulation felt, the sound absorbing material and the carbon fiber cotton are sequentially and tightly connected onto the cold-proof nail in a penetrating mode, a 3M adhesive film is bonded below the carriage board and the carbon fiber cotton, a second sound insulation felt and an aluminum sound absorbing board are sequentially connected onto the cold-proof nail in a penetrating mode below the 3M adhesive film, and a cold-proof nail cap sleeve is sleeved with the cold-proof nail and tightly presses the aluminum sound absorbing board.
The carriage plate is made of a carbon steel plate with the thickness of 3 mm.
The second thickness of the sound insulation felt is 2 mm.
The first sound insulation felt is 0.8mm thick.
The sound absorbing material is 20mm thick.
The carbon fiber cotton is 35mm thick.
The thickness of the aluminum sound absorption plate is 1.6 mm.
The utility model has the advantages that the structure is novel, the sound insulation, sound absorption and sound insulation noise reduction method is adopted, the 0.8mm sound insulation felt I and the 2mm sound insulation felt II both play a sound insulation role, and the 20mm sound absorption material, the 35mm carbon fiber cotton and the 1.6mm aluminum sound absorption plate play a sound absorption role; the principle is as follows: adopt multiply wood medium to separate, inhale, the mode that separates makes first layer transmission sound wave can be at the multiple reflection between two-layer sound insulation felt, utilizes the high characteristic of sound absorbing material acoustic absorptivity to improve whole sound insulation effect, can effectual noise reduction propagate into the cab from the carriage, calculate through the emulation and obtain 3mm carbon steel board and the utility model discloses weight-counting sound insulation Rw between them, 3mm steel board sound insulation is 39.3dB, the utility model discloses 52.8dB, from data comparison seeing, this structure sound insulation is far superior to 3mm carbon steel board, and noise reduction is showing. Because the original structure needs to be optimized and the appearance size of the original panel cannot be changed, the panel can only be arranged at the inner side of the panelThe design of the scheme is carried out in the groove, the thickness of the inner space of the groove is 55mm, the problem of opening and closing of the panel is considered, the whole weight is not too large, so that only 20mm sound-absorbing materials are selected, and the space is filled by matching 35mm carbon fiber cotton, and light carbon fiber cotton (volume density: 10 kg/m) is selected in the combination3) And a 55mm sound absorbing material (bulk density: 240kg/m3) The weight of the composite sound absorption board is reduced by 61.7%, and meanwhile, the carbon fiber cotton also has excellent sound absorption effect, so that the sound absorption effect meeting requirements can be achieved by filling the inner groove of the panel with the combination of the two, the composite sound absorption board is lighter in weight and convenient for operations such as door opening and closing inspection at ordinary times, in order to ensure the optimal noise reduction effect, a layer of 2mm sound insulation felt II is compounded on the outer side on the basis of the combination of the sound absorption material and the carbon fiber cotton, sound waves are reflected for multiple times in the structure in a separating, absorbing and separating mode, when a train runs, noise in a carriage is mainly emitted from medium and low frequency, the sound absorption effect of the aluminum sound absorption board at medium and low frequency is excellent, the noise problem under the frequency band can be effectively solved, the noise interference is greatly reduced, the comfort when a train driver drives is improved, and the overall weight and light weight requirements of the train control are met.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
the carriage plate 1 is a carbon steel plate with the thickness of 3 mm;
the second sound insulation felt 3 is 2mm thick;
the thickness of the first sound insulation felt is 5mm and 0.8 mm;
the sound absorbing material 6 is 20mm thick;
the carbon fiber cotton is 7 mm thick and 35mm thick;
the aluminium sound-absorbing panel 8 is 1.6mm thick.
Claims (7)
1. The utility model provides a structure of making an uproar falls in silence for carriage panel which characterized in that: the cold-proof nail is welded with the carriage board, a first sound insulation felt, a sound absorbing material and carbon fiber cotton are filled below the surface of a groove in the inner side of the carriage board, the first sound insulation felt, the sound absorbing material and the carbon fiber cotton are sequentially and tightly connected onto the cold-proof nail in a penetrating mode, a 3M adhesive film is bonded below the carriage board and the carbon fiber cotton, a second sound insulation felt and an aluminum sound absorbing board are sequentially connected onto the cold-proof nail in a penetrating mode below the 3M adhesive film, and a cold-proof nail cap sleeve is sleeved with the cold-proof nail and tightly presses the aluminum sound absorbing board.
2. A noise reducing structure of silence applied to a deck panel of a vehicle compartment according to claim 1, wherein: the carriage plate is made of a carbon steel plate with the thickness of 3 mm.
3. A noise reducing structure of silence applied to a deck panel of a vehicle compartment according to claim 1, wherein: the second thickness of the sound insulation felt is 2 mm.
4. A noise reducing structure of silence applied to a deck panel of a vehicle compartment according to claim 1, wherein: the first sound insulation felt is 0.8mm thick.
5. A noise reducing structure of silence applied to a deck panel of a vehicle compartment according to claim 1, wherein: the sound absorbing material is 20mm thick.
6. A noise reducing structure of silence applied to a deck panel of a vehicle compartment according to claim 1, wherein: the carbon fiber cotton is 35mm thick.
7. A noise reducing structure of silence applied to a deck panel of a vehicle compartment according to claim 1, wherein: the thickness of the aluminum sound absorption plate is 1.6 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022841658.9U CN214057422U (en) | 2020-11-30 | 2020-11-30 | Be applied to structure of making an uproar falls in silence of carriage panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022841658.9U CN214057422U (en) | 2020-11-30 | 2020-11-30 | Be applied to structure of making an uproar falls in silence of carriage panel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214057422U true CN214057422U (en) | 2021-08-27 |
Family
ID=77405133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022841658.9U Active CN214057422U (en) | 2020-11-30 | 2020-11-30 | Be applied to structure of making an uproar falls in silence of carriage panel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214057422U (en) |
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2020
- 2020-11-30 CN CN202022841658.9U patent/CN214057422U/en active Active
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