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Sound-absorbing and sound-insulation composite sandwich flat board structure

A sound-absorbing insulation and sound-absorbing board technology, which is applied in the direction of sound insulation, building components, building structures, etc., can solve the problems of weak impact and vibration resistance of sound-absorbing and insulating structures, achieve simple structure, not easy to deform, and improve overall performance. The effect of stiffness

Pending Publication Date: 2020-03-27
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of weak impact and vibration resistance of the sound-absorbing and insulating structure in the prior art, the present invention further provides a sound-absorbing and insulating composite sandwich plate structure;

Method used

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  • Sound-absorbing and sound-insulation composite sandwich flat board structure
  • Sound-absorbing and sound-insulation composite sandwich flat board structure
  • Sound-absorbing and sound-insulation composite sandwich flat board structure

Examples

Experimental program
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specific Embodiment approach 1

[0022] Specific implementation mode one: refer to figure 1 This embodiment is described. This embodiment provides a sound-absorbing and insulating composite sandwich panel structure. Block 5, M is a positive integer; the sound-absorbing panel 1, the corrugated panel 2 and the sound-insulating panel 3 are fixedly connected from top to bottom, and the sound-absorbing panel 1, the corrugated panel 2 and the sound-insulating panel 3 are all arranged around the frame 4, the sound insulation board 3 is fixedly connected with the lower part of each surrounding board in the surrounding board frame 4, the sound-absorbing board 1 is fixedly connected with the upper part of each surrounding board in the surrounding board frame 4, and the M waterproof sound-absorbing blocks 5 are all The cloth is placed in the gap formed by the corrugated board 2, the sound-absorbing board 1 and the sound-insulating board 3.

[0023] In this embodiment, the sound-absorbing board 1 and the corrugated boar...

specific Embodiment approach 2

[0024] Specific implementation mode two: refer to image 3 Describe this embodiment. This embodiment is to further limit the sound-absorbing panel 1 described in Embodiment 1. In this embodiment, the sound-absorbing panel 1 is a rectangular micro-perforated plate with an opening ratio of 25%-40 %. Other compositions and connection methods are the same as those in Embodiment 1.

[0025] In this embodiment, the aperture ratio of the rectangular micro-perforated plate is related to the noise to be isolated. The larger the aperture ratio, the greater the absorbed noise, and the smaller the aperture ratio, the smaller the absorbed noise. The impact and vibration resistance of the acoustic structure, so the opening ratio should not be too large.

specific Embodiment approach 3

[0026] Specific implementation mode three: refer to figure 1 Describe this embodiment. This embodiment is to further limit the sound-absorbing panel 1. In this embodiment, the material of the sound-absorbing panel 1 is a combination of metal plates and plastic panels, a combination of plywood and gypsum boards, organic glass, and glass cloth. And one of cardboard, when the material of the sound-absorbing panel 1 is a combination of metal plates and plastic plates, the metal plate is used as the face plate layer, and the plastic plate is used as the back plate layer, and the thickness of the face plate layer and the back plate layer are both 0.5mm-10mm , the sound-absorbing panel 1 is made of plywood and gypsum board assembly, the plywood is used as the face plate, and the gypsum board is used as the back plate layer, and the thickness of the face plate layer and the back plate layer are both 0.5mm-10mm. Other compositions and connection methods are the same as those in Embodim...

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Abstract

The invention relates to a sound-absorbing and sound-insulation composite sandwich flat board structure, and belongs to the field of noise control of buildings and ships. In order to solve the problemabout the weak shock-resistant and vibration-resistant ability of a sound-absorbing and sound-insulating structure in the prior art, the flat board structure includes a sound-absorbing board, a corrugated board, a sound-insulation board, a peripheral surrounding board frame and M waterproof sound absorption blocks, wherein M is a positive integer; and the sound-absorbing board, the corrugated board and the sound-insulation board are sequentially and fixedly connected from top to bottom, the sound-absorbing board, the corrugated board and the sound-insulation board are all arranged in the peripheral surrounding board frame, the sound-absorbing board is fixedly connected with the lower portion of each surrounding board in the peripheral surrounding board frame, the sound-absorbing board isfixedly connected the upper part of each surrounding board in the peripheral surrounding board frame, and the M waterproof sound absorption blocks are evenly distributed in gaps formed by the corrugated board, the sound-absorbing board and the sound-insulation board. The sound-absorbing and sound-insulation composite sandwich flat board structure is mainly used for noise reduction of a large amount of noise generated during running of electromechanical equipment in the ship travelling process.

Description

technical field [0001] The invention belongs to the field of noise control of buildings and ships, and in particular relates to a sound-absorbing and insulating composite sandwich flat structure. Background technique [0002] Noise in daily life affects people's quality of life, and the operation of electromechanical equipment will also generate relatively large noise when the ship is running. In order to reduce the transmission of noise, most people choose to set up sound insulation structures at the noise source or on the transmission path to increase the transmission loss of noise and achieve the purpose of noise control. The sound insulation of the sound insulation structure follows the mass law, that is, for a certain frequency of sound waves, the surface density and thickness of the sound insulation structure determine the sound insulation of the sound insulation structure. Therefore, in order to obtain excellent low-frequency sound insulation effect, it is necessary ...

Claims

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Application Information

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IPC IPC(8): E04B1/86
CPCE04B1/86E04B2001/8433E04B2001/8452E04B2001/8471
Inventor 刘春川张春宝王朋
Owner HARBIN ENG UNIV