CN201315153Y - Sound insulation device made of composite materials in engine compartment - Google Patents
Sound insulation device made of composite materials in engine compartment Download PDFInfo
- Publication number
- CN201315153Y CN201315153Y CNU2008202117359U CN200820211735U CN201315153Y CN 201315153 Y CN201315153 Y CN 201315153Y CN U2008202117359 U CNU2008202117359 U CN U2008202117359U CN 200820211735 U CN200820211735 U CN 200820211735U CN 201315153 Y CN201315153 Y CN 201315153Y
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- plate
- sound insulation
- engine compartment
- plates
- top board
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Abstract
The utility model relates to a sound insulation enclosure, in particular to a sound insulation device made of composite materials in an engine compartment. The sound insulation device aims to solve the problem that the noise in the engine compartment where a power device and a rear transmission device for a boat are positioned is higher, thereby influencing the stability and the comfortable service performance of the boat. In the sound insulation device, a four-frame is formed by two end plates and two lateral plates; a top plate is arranged on the top end surface of the four-frame; the top plate, each lateral plate or each end plate respectively comprises a steel plate, a damping plate, a wood plate and a first layer of sound absorbing materials; the damping plate is arranged on the inner lateral surface of the steel plate; the wood plate is arranged on the inner lateral surface of the damping plate; and the first layer of sound absorbing materials is arranged on the inner lateral surface of the wood plate. An ideal composite barrier is formed by the top plate, the two lateral plates and the two end plates by using a plurality of layers of different materials and not only has the reflection and the sound insulation effects, but also forms the constrained damping to block the vibration of front and rear rigid body layers, thereby increasing the sound insulation performance and eliminating the noise in the engine compartment where the power device and the rear transmission device are positioned, so that the boat is more stable and comfortable.
Description
Technical field
The utility model relates to a kind of acoustic hood.
Background technology
Existing ships and light boats power and rear driving system are subjected to any excitation force, its system is with regard to having the response of this excitation force and produce vibration, this vibrational energy is propagated in total system, after propagation and being radiated ships and light boats power and rear driving system, this energy just converts pressure wave to and blazes abroad through air again, is sound radiation and also is noise.Produce sound radiation ships and light boats are produced harmful effect, reduced ships and light boats power and the reliability of back transmission and the comfortableness of ships and light boats, higher noise has also damaged the healthy of passenger and crewman,
The utility model content
The purpose of this utility model is higher for the noise in the cabin that solves ships and light boats power and gearing place, back, influences the stationarity of ships and light boats and the problem of comfortable usability, and combined material sound arrester in a kind of cabin is provided.
Combined material sound arrester in the utility model cabin, it comprises top board, two side plates and two end plates, two end plates and two side plates constitute four frames, top board is arranged on the top end face of described four frames, top board, each side plate and each end plate are formed by steel plate, damping sheet, plank and ground floor acoustic absorbant, damping sheet is arranged on the inboard face of steel plate, and plank is arranged on the inboard face of damping sheet, and the ground floor acoustic absorbant is arranged on the inboard face of plank.
The utility model has the advantages that: one, top board of the present utility model, two side plates have constituted the Ideal Match barrier with two end plates by the different material of multilayer, the effect of reflection and sound absorption is not only arranged, but also formation damping-constraining, the vibration of two rigid body layers before and after hindering, increase its oise insulation factor, eliminate the noise in the cabin at ships and light boats power and gearing place, back, made ships and light boats more steadily and comfortable.Two, simple in structure, the convenient disassembly, safe and reliable of the utility model.
Description of drawings
Fig. 1 is the external structure stereographic map of combined material sound arrester in the utility model cabin, and Fig. 2 is the vertical view of Fig. 1, and Fig. 3 is the B-B cut-open view of Fig. 2.
Embodiment
Embodiment one: present embodiment is described in conjunction with Fig. 1～Fig. 3, present embodiment comprises top board 1, two side plates 2 and two end plates 3, two end plates 3 and two side plates 2 constitute four frames, top board 1 is arranged on the top end face of described four frames, top board 1, each side plate 2 and each end plate 3 are formed by steel plate 5, damping sheet 6, plank 7 and ground floor acoustic absorbant 8, damping sheet 6 is arranged on the inboard face of steel plate 5, plank 7 is arranged on the inboard face of damping sheet 6, and ground floor acoustic absorbant 8 is arranged on the inboard face of plank 7.Ground floor acoustic absorbant 8 is a mineral cotton; Damping sheet 6 is a polyurethane; Mineral cotton and polyurethane can reduce the wave amplitude of acoustic hood standing internal wave, increase the resonant frequency of acoustic hood standing internal wave, simultaneously the acoustic hood standing internal wave are widened, thereby reduce the reflecting acoustic pressure in the acoustic hood.The multilayer acoustic hood of being made up of steel plate 5, damping sheet 6, plank 7 and ground floor acoustic absorbant 8 has stopped direct radiation sound, can reduce noise 20dB.
Embodiment two: present embodiment is described in conjunction with Fig. 2 and Fig. 3, the difference of present embodiment and embodiment one is: its increases some angle steel 9, laterally vertically is laid with some angle steel 9 on steel plate 5 lateral surfaces on top board 1, two side plates 2 and two end plates 3.Be designed to improve the serviceable life of top board 1, two side plates 2 and two end plates 3 like this, avoid above-mentioned each plate to be subjected to the vibration of noise in the cabin at ships and light boats power and gearing place, back for a long time and separate.Other composition and annexation are identical with embodiment one.
Embodiment three: in conjunction with Fig. 3 present embodiment is described, the difference of present embodiment and embodiment one is: its increases between the lower surface of the upper surface have sealing strip 10, sealing strip 10 to be arranged on side plate 2 and top board 1.Design makes that the blimp sound-absorbing effect is better like this.Other composition and annexation are identical with embodiment two.
Embodiment four: in conjunction with Fig. 3 present embodiment is described, the difference of present embodiment and embodiment one is: it increases has second layer acoustic absorbant 4, second layer acoustic absorbant 4 to be arranged on the inboard face of ground floor acoustic absorbant 8.Second layer acoustic absorbant 4 is a mineral cotton, and is overlapping by two-layer or two-layer above acoustic absorbant, causes the interface, makes a part of acoustic energy go back from boundary reflection, and through reflection and reflection again, just some more acoustic energy is consumed by layers of material; Second layer acoustic absorbant 4 is different with the thickness of ground floor acoustic absorbant 8, and sound-absorbing effect is better.Other composition and annexation are identical with embodiment three.
Claims (4)
1, combined material sound arrester in a kind of cabin, it comprises top board (1), two side plates (2) and two end plates (3), two end plates (3) constitute four frames with two side plates (2), top board (1) is arranged on the top end face of described four frames, it is characterized in that: top board (1), each side plate (2) and each end plate (3) are by steel plate (5), damping sheet (6), plank (7) and ground floor acoustic absorbant (8) are formed, damping sheet (6) is arranged on the inboard face of steel plate (5), plank (7) is arranged on the inboard face of damping sheet (6), and ground floor acoustic absorbant (8) is arranged on the inboard face of plank (7).
2, combined material sound arrester in the cabin according to claim 1, it is characterized in that: it also contains some angle steel (9), laterally vertically is laid with some angle steel (9) on steel plate (5) lateral surface on top board (1), two side plates (2) and two end plates (3).
3, combined material sound arrester in the cabin according to claim 2 is characterized in that: it also contains sealing strip (10), and sealing strip (10) is arranged between the lower surface of the upper surface of side plate (2) and top board (1).
4, combined material sound arrester in the cabin according to claim 3 is characterized in that: it also contains second layer acoustic absorbant (4), and second layer acoustic absorbant (4) is arranged on the inboard face of ground floor acoustic absorbant (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202117359U CN201315153Y (en) | 2008-12-19 | 2008-12-19 | Sound insulation device made of composite materials in engine compartment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202117359U CN201315153Y (en) | 2008-12-19 | 2008-12-19 | Sound insulation device made of composite materials in engine compartment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201315153Y true CN201315153Y (en) | 2009-09-23 |
Family
ID=41126951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202117359U Expired - Fee Related CN201315153Y (en) | 2008-12-19 | 2008-12-19 | Sound insulation device made of composite materials in engine compartment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201315153Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832625A (en) * | 2014-12-18 | 2015-08-12 | 北汽福田汽车股份有限公司 | Muffler device for transmission shaft of anechoic chamber |
| CN108408085A (en) * | 2018-02-12 | 2018-08-17 | 北京空间技术研制试验中心 | Passive denoising structure for spacecraft |
-
2008
- 2008-12-19 CN CNU2008202117359U patent/CN201315153Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832625A (en) * | 2014-12-18 | 2015-08-12 | 北汽福田汽车股份有限公司 | Muffler device for transmission shaft of anechoic chamber |
| CN104832625B (en) * | 2014-12-18 | 2018-09-14 | 北汽福田汽车股份有限公司 | Anechoic room transmission shaft silencing apparatus |
| CN108408085A (en) * | 2018-02-12 | 2018-08-17 | 北京空间技术研制试验中心 | Passive denoising structure for spacecraft |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090923 Termination date: 20141219 |
|
| EXPY | Termination of patent right or utility model |