Multi-layer vibration and noise reduction plate for airplane

Abstract

The utility model relates to the technical field of vibration and noise reduction plates, and discloses a multi-layer vibration and noise reduction plate for an airplane, which solves the problem of poor vibration and noise reduction effect of the existing airplane, and comprises a vibration and noise reduction plate body, the side edge of the vibration and noise reduction plate body is provided with edge sealing glue, and the edge sealing glue is provided with a sealing strip. The vibration and noise reduction plate body is composed of a first damping plate, a vibration and noise reduction layer, a honeycomb plate, an aluminum foil composite plate and a second damping plate, the first damping plate is connected to the inner surface of the cabin shell, the vibration and noise reduction layer is connected to one side of the first damping plate, and the honeycomb plate is connected to the side, away from the first damping plate, of the vibration and noise reduction layer; the aluminum foil composite plate is connected to the side, away from the vibration and noise reduction layer, of the honeycomb plate, the second damping plate is connected to the side, away from the honeycomb plate, of the aluminum foil composite plate, and the other side of the second damping plate is connected with the cabin trim layer. By means of the vibration and noise reduction plate, vibration and noise can be fully reduced, and the noise reduction effect is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of vibration-damping and noise-reducing panels, in particular to a multi-layer vibration-damping and noise-reducing panel for aircraft. Background Art

[0002] When the aircraft engine itself is operating, it will generate a series of noises such as fan noise, turbine noise, jet noise, etc. Excessive noise will affect the passengers' riding experience. Therefore, it is necessary to reduce vibration and noise inside the cabin. At present, damping plates are usually installed inside the cabin shell to achieve vibration and noise reduction functions. However, the existing damping plates usually have a simple structure and ineffective vibration and noise reduction effects, but it is difficult to fully absorb the noise, and the use effect is poor. Therefore, this application proposes a multi-layer vibration and noise reduction plate for aircraft to achieve efficient noise reduction inside the cabin. Utility Model Content

[0003] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a multi-layer aircraft vibration and noise reduction plate, which effectively solves the problem that the prior aircraft vibration and noise reduction effects are poor.

[0004] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a multi-layer vibration-damping and noise-reducing panel for aircraft, comprising a vibration-damping and noise-reducing panel body, the side of the vibration-damping and noise-reducing panel body being provided with edge sealing glue, the vibration-damping and noise-reducing panel body being composed of a first damping plate, a vibration-damping and noise-reducing layer, a honeycomb panel, an aluminum foil composite panel and a second damping panel, the first damping plate being connected to the inner surface of the cabin shell, the vibration-damping and noise-reducing layer being connected to one side of the first damping plate, the honeycomb panel being connected to the side of the vibration-damping and noise-reducing layer away from the first damping plate, the aluminum foil composite panel being connected to the side of the honeycomb panel away from the vibration-damping and noise-reducing layer, the second damping plate being connected to the side of the aluminum foil composite panel away from the honeycomb panel, and the other side of the second damping plate being connected to the cabin interior layer.

[0005] Preferably, the first damping plate, the vibration and noise reduction layer, the honeycomb panel, the aluminum foil composite panel and the second damping plate are all glue-connected structures.

[0006] Preferably, the first damping plate and the second damping plate are both composed of a first glass magnesium plate, a rubber layer and a second glass magnesium plate, the rubber layer is fixedly connected between the first glass magnesium plate and the second glass magnesium plate, and the rubber layer and the first glass magnesium plate and the second glass magnesium plate are glue-connected.

[0007] Preferably, an inner cavity is provided inside the rubber layer, and a plurality of honeycomb-shaped silica gel columns are fixedly provided inside the inner cavity.

[0008] Preferably, the vibration-damping and noise-reducing layer is composed of a glass magnesium support frame, a first sound-absorbing cotton layer, a second sound-absorbing cotton layer and a plurality of vibration-damping and noise-reducing units. The first sound-absorbing cotton layer and the second sound-absorbing cotton layer are respectively fixedly connected to both sides of the interior of the glass magnesium support frame, and the vibration-damping and noise-reducing unit is connected to the middle position of the interior of the glass magnesium support frame and is connected to the first sound-absorbing cotton layer and the second sound-absorbing cotton layer.

[0009] Preferably, the vibration damping and noise reduction unit is composed of a number of hanging ropes, a support frame, a number of spiral rubber supports, a frame-type rubber pad, a first honeycomb sound-absorbing panel, a second honeycomb sound-absorbing panel and an aluminum foil interlayer. The support frame is connected to the interior of the glass magnesium support frame through the hanging ropes, the spiral rubber supports are connected between the support frame and the first sound-absorbing cotton layer and the second sound-absorbing cotton layer, the frame-type rubber pad is fixedly connected to the outer surface of the support frame, the first honeycomb sound-absorbing panel and the second honeycomb sound-absorbing panel are respectively fixedly connected to both sides of the interior of the support frame, and the aluminum foil interlayer is fixedly connected between the first honeycomb sound-absorbing panel and the second honeycomb sound-absorbing panel.

[0010] Compared with the prior art, the beneficial effects of the present invention are:

[0011] (1) During operation, by arranging a vibration-damping and noise-reducing plate body composed of a first damping plate, a vibration-damping and noise-reducing layer, a honeycomb plate, an aluminum foil composite plate, and a second damping plate, the vibration-damping and noise-reducing effect can be achieved and the vibration-damping and noise-reducing effect can be improved. By arranging a glue connection structure between the first damping plate, the vibration-damping and noise-reducing layer, the honeycomb plate, the aluminum foil composite plate, and the second damping plate, the connection strength can be improved.

[0012] (2) By setting up a first damping plate and a second damping plate composed of a first glass magnesium plate, a rubber layer and a second glass magnesium plate, and setting up an inner cavity and a honeycomb silicone column, the vibration reduction effect can be improved, the transmission of vibration can be effectively blocked, and the sound insulation effect can be improved. By setting up a vibration reduction and noise reduction unit composed of a number of hanging ropes, a support frame, a number of spiral rubber supports, a frame-type rubber pad, a first honeycomb sound-absorbing plate, a second honeycomb sound-absorbing plate and an aluminum foil interlayer, vibration can be further absorbed and noise can be isolated. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention.

[0014] In the attached figure:

[0015] Figure 1 This is a schematic structural diagram of a multi-layer aircraft vibration and noise reduction plate of the utility model;

[0016] Figure 2 For this utility model Figure 1 A partial enlarged view of

[0017] Figure 3 This is a schematic structural diagram of the first damping plate of the utility model;

[0018] Figure 4 This is a schematic diagram of the local structure of the vibration and noise reduction layer of the utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the vibration reduction and noise reduction unit of the utility model;

[0020] In the figure: 1. Vibration and noise reduction panel body; 2. Edge sealing glue; 3. First damping plate; 4. Vibration and noise reduction layer; 5. Honeycomb panel; 6. Aluminum foil composite panel; 7. Second damping plate; 8. First glass magnesium board; 9. Rubber layer; 10. Second glass magnesium board; 11. Inner cavity; 12. Honeycomb silicone column; 13. Glass magnesium support frame; 14. First sound-absorbing cotton layer; 15. Second sound-absorbing cotton layer; 16. Vibration and noise reduction unit; 17. Hanging rope; 18. Support frame; 19. Spiral rubber support; 20. Frame-type rubber pad; 21. First honeycomb sound-absorbing panel; 22. Second honeycomb sound-absorbing panel; 23. Aluminum foil interlayer. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0022] Depend on Figure 1 and Figure 2 The utility model provides a multi-layer vibration damping and noise reduction panel for aircraft, comprising a vibration damping and noise reduction panel body 1, wherein the side of the vibration damping and noise reduction panel body 1 is provided with an edge sealing glue 2, and the vibration damping and noise reduction panel body 1 is composed of a first damping plate 3, a vibration damping and noise reduction layer 4, a honeycomb panel 5, an aluminum foil composite panel 6 and a second damping plate 7. The first damping plate 3 is connected to the inner surface of the cabin shell, the vibration damping and noise reduction layer 4 is connected to one side of the first damping plate 3, the honeycomb panel 5 is connected to the side of the vibration damping and noise reduction layer 4 away from the first damping plate 3, the aluminum foil composite panel 6 is connected to the side of the honeycomb panel 5 away from the vibration damping and noise reduction layer 4, the second damping plate 7 is connected to the side of the aluminum foil composite panel 6 away from the honeycomb panel 5, and the other side of the second damping plate 7 is connected to the cabin interior layer, and the first damping plate 3, the vibration damping and noise reduction layer 4, the honeycomb panel 5, the aluminum foil composite panel 6 and the second damping plate 7 are all glue-connected structures;

[0023] When in use, the first damping plate 3, the vibration and noise reduction layer 4, the honeycomb panel 5, the aluminum foil composite panel 6 and the second damping plate 7 are combined to form a multi-layer vibration and noise reduction structure, thereby improving the vibration and noise reduction effect. By setting the first damping plate 3, the vibration and noise reduction layer 4, the honeycomb panel 5, the aluminum foil composite panel 6 and the second damping plate 7 as a glue-connected structure, the overall strength can be improved.

[0024] Depend on Figure 2 and Figure 3 It is shown that the first damping plate 3 and the second damping plate 7 are both composed of a first glass magnesium plate 8, a rubber layer 9 and a second glass magnesium plate 10. The rubber layer 9 is fixedly connected between the first glass magnesium plate 8 and the second glass magnesium plate 10. The rubber layer 9 and the first glass magnesium plate 8 and the second glass magnesium plate 10 are connected by glue. An inner cavity 11 is provided inside the rubber layer 9, and a plurality of honeycomb silicone columns 12 are fixedly provided inside the inner cavity 11.

[0025] When the first damping plate 3 and the second damping plate 7 are in operation, the rubber layer 9 plays a role in reducing vibration. By providing the inner cavity 11 and the plurality of honeycomb-shaped silicone columns 12, the vibration reduction effect can be improved, thereby improving the noise reduction effect.

[0026] Depend on Figure 2 、 Figure 4 and Figure 5 It is given that the vibration reduction and noise reduction layer 4 is composed of a glass magnesium support frame 13, a first sound absorbing cotton layer 14, a second sound absorbing cotton layer 15 and a plurality of vibration reduction and noise reduction units 16. The first sound absorbing cotton layer 14 and the second sound absorbing cotton layer 15 are fixedly connected to both sides of the glass magnesium support frame 13 respectively. The vibration reduction and noise reduction unit 16 is connected to the middle position of the glass magnesium support frame 13 and is connected to the first sound absorbing cotton layer 14 and the second sound absorbing cotton layer 15. The vibration reduction and noise reduction unit 16 is composed of a plurality of hanging ropes 17, a support frame 18, a plurality of spiral rubber supports 19, a frame-shaped rubber pad 20, a first honeycomb The sound-absorbing panel 21, the second honeycomb sound-absorbing panel 22 and the aluminum foil interlayer 23 are composed. The support frame 18 is connected to the inside of the glass magnesium support frame 13 by the suspension rope 17. The spiral rubber support 19 is connected between the support frame 18 and the first sound-absorbing cotton layer 14 and the second sound-absorbing cotton layer 15. The frame-shaped rubber pad 20 is fixedly connected to the outer surface of the support frame 18. The first honeycomb sound-absorbing panel 21 and the second honeycomb sound-absorbing panel 22 are respectively fixedly connected to the two sides of the inside of the support frame 18. The aluminum foil interlayer 23 is fixedly connected between the first honeycomb sound-absorbing panel 21 and the second honeycomb sound-absorbing panel 22.

[0027] The glass magnesium support frame 13 supports the first sound-absorbing cotton layer 14, the second sound-absorbing cotton layer 15 and several vibration-damping and noise reduction units 16. The first sound-absorbing cotton layer 14 and the second sound-absorbing cotton layer 15 can reduce noise and avoid collision between the vibration-damping and noise reduction units 16 and the glass magnesium support frame 13. The spiral rubber support 19 can limit and buffer the support frame 18, and the lifting rope 17 can support the support frame 18. The first honeycomb sound-absorbing panel 21, the second honeycomb sound-absorbing panel 22 and the aluminum foil interlayer 23 can reduce vibration and noise. The vibration-damping and noise reduction unit 16 is in an active state, thereby improving the vibration reduction effect.

[0028] During operation, by setting a vibration-damping and noise-reducing plate body composed of a first damping plate, a vibration-damping and noise-reducing layer, a honeycomb plate, an aluminum foil composite plate and a second damping plate, the vibration-damping and noise-reducing effect can be achieved and the vibration-damping and noise-reducing effect can be improved. By setting the first damping plate, the vibration-damping and noise-reducing layer, the honeycomb plate, the aluminum foil composite plate and the second damping plate to be glue-connected structures, the connection strength can be improved. By setting the first damping plate and the second damping plate composed of a first glass magnesium plate, a rubber layer and a second glass magnesium plate, and setting an inner cavity and a honeycomb silicone column, the vibration-damping effect can be improved, the transmission of vibration can be effectively blocked, and the sound insulation effect can be improved. By setting a vibration-damping and noise-reducing unit composed of a number of hanging ropes, a support frame, a number of spiral rubber supports, a frame-type rubber pad, a first honeycomb sound-absorbing panel, a second honeycomb sound-absorbing panel and an aluminum foil interlayer, vibration can be further absorbed and noise can be isolated.

Claims

1. A multi-layer aircraft vibration and noise reduction panel, comprising a vibration and noise reduction panel body (1), characterized in that: The side of the vibration-damping and noise-reducing plate body (1) is provided with edge sealing glue (2), and the vibration-damping and noise-reducing plate body (1) is composed of a first damping plate (3), a vibration-damping and noise-reducing layer (4), a honeycomb plate (5), an aluminum foil composite plate (6) and a second damping plate (7), wherein the first damping plate (3) is connected to the inner surface of the cabin shell, the vibration-damping and noise-reducing layer (4) is connected to one side of the first damping plate (3), the honeycomb plate (5) is connected to the side of the vibration-damping and noise-reducing layer (4) away from the first damping plate (3), the aluminum foil composite plate (6) is connected to the side of the honeycomb plate (5) away from the vibration-damping and noise-reducing layer (4), the second damping plate (7) is connected to the side of the aluminum foil composite plate (6) away from the honeycomb plate (5), and the other side of the second damping plate (7) is connected to the cabin interior layer.

2. The multi-layer aircraft vibration and noise reduction panel according to claim 1, characterized in that: The first damping plate (3), the vibration and noise reduction layer (4), the honeycomb plate (5), the aluminum foil composite plate (6) and the second damping plate (7) are all glue-connected structures.

3. The multi-layer aircraft vibration and noise reduction panel according to claim 1, characterized in that: The first damping plate (3) and the second damping plate (7) are both composed of a first glass magnesium plate (8), a rubber layer (9) and a second glass magnesium plate (10); the rubber layer (9) is fixedly connected between the first glass magnesium plate (8) and the second glass magnesium plate (10); and the rubber layer (9) is connected to the first glass magnesium plate (8) and the second glass magnesium plate (10) by a glue connection structure.

4. The multi-layer aircraft vibration and noise reduction panel according to claim 3, characterized in that: An inner cavity (11) is provided inside the rubber layer (9), and a plurality of honeycomb-shaped silica gel columns (12) are fixedly provided inside the inner cavity (11).

5. The multi-layer aircraft vibration and noise reduction panel according to claim 1, characterized in that: The vibration-damping and noise-reducing layer (4) is composed of a glass magnesium support frame (13), a first sound-absorbing cotton layer (14), a second sound-absorbing cotton layer (15), and a plurality of vibration-damping and noise-reducing units (16). The first sound-absorbing cotton layer (14) and the second sound-absorbing cotton layer (15) are respectively fixedly connected to two sides of the interior of the glass magnesium support frame (13). The vibration-damping and noise-reducing unit (16) is connected to a middle position of the interior of the glass magnesium support frame (13) and is connected to the first sound-absorbing cotton layer (14) and the second sound-absorbing cotton layer (15).

6. The multi-layer aircraft vibration and noise reduction panel according to claim 5, characterized in that: The vibration reduction and noise reduction unit (16) is composed of a plurality of hanging ropes (17), a support frame (18), a plurality of spiral rubber supports (19), a frame-shaped rubber pad (20), a first honeycomb sound-absorbing panel (21), a second honeycomb sound-absorbing panel (22) and an aluminum foil interlayer (23). The support frame (18) is connected to the interior of the glass magnesium support frame (13) through the hanging ropes (17). The spiral rubber supports (19) are connected between the support frame (18) and the first sound-absorbing cotton layer (14) and the second sound-absorbing cotton layer (15). The frame-shaped rubber pad (20) is fixedly connected to the outer surface of the support frame (18). The first honeycomb sound-absorbing panel (21) and the second honeycomb sound-absorbing panel (22) are respectively fixedly connected to two sides of the interior of the support frame (18). The aluminum foil interlayer (23) is fixedly connected between the first honeycomb sound-absorbing panel (21) and the second honeycomb sound-absorbing panel (22).

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