Testing device for sound insulation sponge

Abstract

The utility model belongs to the technical field of acoustic testing, and particularly relates to a sound insulation sponge testing device which comprises a box body, and a plurality of sliding grooves are formed in the top of the box body. A plurality of fixed boxes are fixedly connected to the middle part of the inner wall of the box body; a plurality of fixing plates are rotationally connected to the middle parts of the adjacent fixing boxes; the fixing plate and the fixing box are connected through a torsional spring; the fixing plate and the sliding groove are correspondingly arranged. A test sound source is fixedly connected to the inner side wall of the box body; the inner side wall of the box body on the other side is fixedly connected with a sound sensor; a plurality of fixing blocks are fixedly connected to the middle part in the box body; a clamping groove is formed in the surface of the fixing block; the sliding grooves and the clamping grooves are arranged correspondingly. After the test work is completed and the sponge is taken out, the fixing plate can be driven to reset by the torsional spring in the fixing box, the sponge is fixed through the multiple clamping grooves, the number can be flexibly adjusted when the multiple sponges are tested, and therefore the multiple sponges can be fixed for sound absorption testing.

Description

Technical Field

[0001] The utility model relates to the technical field of acoustic testing, in particular to a testing device for a sound insulation sponge. Background Art

[0002] Sound insulation sponge needs to undergo multiple tests. First, the acoustic performance test can determine its sound insulation and sound absorption capabilities. Secondly, the physical properties and environmental adaptability tests ensure its stable performance in different environments. Finally, the durability test verifies its performance stability in long-term use.

[0003] The sound insulation test includes measuring the sound insulation volume of the sound insulation sponge, evaluating its ability to block sound by comparing the difference in sound intensity between the sound source and the receiving point, conducting a sound absorption coefficient test, measuring the effect of the sound insulation sponge in absorbing sound, and measuring the change in sound wave energy with the help of professional equipment to obtain the results.

[0004] When using the sound insulation sponge testing device, the sound absorption test must be carried out first. During the test, only a piece of sound insulation sponge is placed in the space for testing. When it is shaken by the outside world, the sponge will move, making it difficult to provide the sponge sound absorption data.

[0005] Therefore, in response to the above problems, a testing device for sound insulation sponge is proposed. Utility Model Content

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problems is: the present invention is a testing device for a sound insulation sponge, comprising a box body, a plurality of slide grooves are provided on the top of the box body; a plurality of fixing boxes are fixedly connected to the middle of the inner wall of the box body; a plurality of fixing plates are rotatably connected in the middle of adjacent fixing boxes; the fixing plates and the fixing boxes are connected by torsion springs; the fixing plates and the slide grooves are correspondingly arranged; a test sound source is fixedly connected to the inner side wall of the box body; a sound sensor is fixedly connected to the inner side wall of the box body on the other side; a plurality of fixed blocks are fixedly connected to the middle of the inner part of the box body; a card slot is provided on the surface of the fixed block; the slide groove and the card slot are correspondingly arranged; when the sponge is taken out after the test work is completed, the fixing plate will be driven to reset by the torsion spring inside the fixing box. By providing a plurality of card slots to fix the sponge, the number can be flexibly adjusted when testing multiple sponges, so that multiple sponges can be fixed for sound absorption testing.

[0008] Preferably, a plurality of elastic plates are fixedly connected to the inner side walls of the card slot; the elastic plates are arranged in an arc shape on the card slot; since the elastic plates have elastic characteristics, the sponge is tightly attached to the surface of the sponge from the middle of the card slot to the deepest part, which can reduce the position movement caused by external factors when testing the sponge, thereby further fixing the sponge.

[0009] Preferably, an arc-shaped plate is fixedly connected to the top of the fixed block; a plurality of the arc-shaped plates are provided on the fixed block; by adding an arc-shaped plate to provide a guide for the sponge, installation time can be saved when installing the sponge, the accuracy of the sponge entering the slot can be increased, and the time for adjusting the sponge can be reduced. At the same time, because the arc-shaped plates are intermittently provided on the surface of the fixed block, there are gaps between adjacent arc-shaped plates, which can reduce the impact on the sound absorption of the test sponge.

[0010] Preferably, a pair of gas tanks are fixedly connected to the bottom of the box; a plurality of air holes are opened on the surface of the gas tanks; an air duct is fixedly connected to the bottom of the box; the air duct is arranged throughout the interior of the box; the air duct is connected to the gas tanks; the temperature inside the box is adjusted by using the air holes to simulate high and low temperature environments, providing a switchable test environment for the sponge, thereby increasing the data of the sponge sound absorption test.

[0011] Preferably, the side walls and bottom of the box are fixed with multiple springs; the ends of the springs on one side are fixed with a square plate; using springs to protect the box can make the springs alleviate most of the shaking and reduce the shaking of the box, thereby increasing the stability of the sponge test environment and reducing the impact of external shaking on the sponge test.

[0012] Preferably, a rubber pad is fixed to the surface of the square plate; the rubber pad is arranged in a wave shape on the square plate; the undulating structure of the wavy rubber pad can adapt to forces in different directions. When the box is subjected to a lateral thrust, the side of the wave can provide resistance to prevent the lateral movement of the box. When the wavy rubber pad is subjected to force, it will deform and increase the contact area with the platform.

[0013] The utility model is beneficial in that:

[0014] 1. The utility model describes a testing device for a sound-insulating sponge. When the sponge is taken out after the test is completed, the fixing plate will be reset by the torsion spring inside the fixing box. The sponge is fixed by providing multiple slots, and the number of sponges can be flexibly adjusted when testing multiple sponges, thereby fixing multiple sponges for sound absorption testing.

[0015] 2. The test device for a sound insulation sponge described in the present invention has elastic characteristics. Since the elastic plate has elastic characteristics, the sponge is tightly attached to the surface of the sponge from the middle of the slot to the deepest part. When testing the sponge, the position movement caused by external factors can be reduced, thereby further fixing the sponge. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 It is a schematic diagram of the main body of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the trachea in the utility model;

[0019] Figure 3 This is a schematic structural diagram of the fixing box in the present utility model;

[0020] Figure 4 This is a schematic structural diagram of the card slot in the utility model;

[0021] Figure 5 It is a structural schematic diagram of the middle plate of the utility model.

[0022] In the figure: 1. Box body; 12. Slide; 13. Test sound source; 14. Fixing block; 15. Slot; 16. Fixing box; 17. Fixing plate; 18. Sound sensor; 2. Elastic plate; 3. Curved plate; 4. Gas tank; 41. Air hole; 42. Air guide tube; 5. Spring; 51. Square plate; 6. Rubber pad. DETAILED DESCRIPTION

[0023] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] Specific examples are given below.

[0025] like Figures 1 to 5As shown, a test device for a sound-insulating sponge according to an embodiment of the present invention comprises a box body 1, wherein a plurality of slide grooves 12 are provided on the top of the box body 1; a plurality of fixing boxes 16 are fixedly connected to the middle of the inner wall of the box body 1; a plurality of fixing plates 17 are rotatably connected to the middle of the adjacent fixing boxes 16; the fixing plates 17 and the fixing boxes 16 are connected by torsion springs; the fixing plates 17 and the slide grooves 12 are correspondingly arranged; a test sound source 13 is fixedly connected to the inner side wall of the box body 1; a sound sensor 18 is fixedly connected to the inner side wall of the box body 1 on the other side; a plurality of fixing blocks 14 are fixedly connected to the middle of the inner part of the box body 1; a card slot 15 is provided on the surface of the fixing block 14; the slide grooves 12 and the card slots 15 are correspondingly arranged; during operation, when it is necessary to perform a sound absorption test on the sponge, first put a plurality of sponges from the slide grooves 12 into the , and then it will contact the fixing plate 17. When it continues to be lowered, the angle of the fixing plate 17 will change, making room for the sponge to enter the interior of the box 1. When it is about to be lowered to the bottom, it will enter the inside of the card slot 15, thereby fixing the bottom of the sponge. At this time, the test sound source 13 can be turned on to emit a sound. When the sound contacts the sponge, part of the sound will be blocked and weakened by the sponge, so that the sound intensity transmitted to the sound sensor 18 will become weaker. The sound absorption strength of the sponge can then be observed by the sound intensity value transmitted by the sound sensor 18. When the test work is completed and the sponge is taken out, the fixing plate 17 will be reset by the torsion spring inside the fixing box 16. By providing a plurality of card slots 15 to fix the sponge, the number can be flexibly adjusted when testing multiple sponges, so that multiple sponges can be fixed for sound absorption testing.

[0026] like Figure 4 As shown, a plurality of elastic plates 2 are fixedly connected to the inner side wall of the card slot 15; the elastic plates 2 are arranged in an arc shape on the card slot 15; when working, the sponge is placed into the box body 1 and will contact the elastic plates 2 when inserted into the card slot 15. When the sponge is further lowered, the end of the elastic plate 2 will approach the inner wall of the card slot 15 until the sponge is inserted into the deepest part of the card slot 15. When the sponge reaches the deepest part of the card slot 15, the elastic plate 2 will fit tightly with the surface of the card slot 15 to clamp the sponge; due to the elastic characteristics of the elastic plate 2, the sponge is in close contact with the surface of the sponge from the middle of the card slot 15 to the deepest part, which can reduce the position movement caused by external factors when testing the sponge, thereby further fixing the sponge.

[0027] like Figure 4As shown, a curved plate 3 is fixed to the top of the fixed block 14; the curved plate 3 is arranged in multiples on the fixed block 14; during operation, before the sponge is placed into the slot 15 through the slide 12, it is necessary to observe the position of the slot 15 first and then lower the sponge. At this time, the curved plate 3 is used to provide guidance for the sponge when it enters the slot 15, so that when the sponge is tilted, it can contact the surface of the curved plate 3 and slide down along it to accurately enter the slot 15; by adding the curved plate 3 to provide guidance for the sponge, installation time can be saved when installing the sponge, the accuracy of the sponge entering the slot 15 can be increased, and the time for adjusting the sponge can be reduced. At the same time, because the curved plate 3 is intermittently arranged on the surface of the fixed block 14, there is a gap between adjacent curved plates 3 to reduce the impact on the sound absorption of the test sponge.

[0028] like Figure 2 As shown, a pair of gas tanks 4 are fixedly connected to the bottom of the box body 1; a plurality of air holes 41 are opened on the surface of the gas tank 4; an air guide pipe 42 is fixedly connected to the bottom of the box body 1; the air guide pipe 42 is arranged throughout the inside of the box body 1; the air guide pipe 42 is connected to the gas tank 4; when working, while testing the sound absorption of the sponge, the sound absorption effect of the sponge in various environments is switched, thereby starting the air pump to transmit the gas through the air guide pipe 42 to the inside of the gas tank 4 at the bottom and then eject it from the air hole 41. When the gas reaches the inside of the box body 1, the temperature inside the box body 1 can be adjusted; by using the air hole 41 to adjust the temperature inside the box body 1 to simulate high and low temperature environments, a switchable test environment is provided for the sponge, thereby increasing the data of the sponge sound absorption test.

[0029] like Figures 1 to 2 As shown, a plurality of springs 5 ​​are fixedly connected to the middle of the box 1; the ends of the springs 5 ​​are fixedly connected to square plates 51; when working, the bottom of the box 1 is usually located on a platform or a table. When the platform moves, the box 1 will also be linked to shake. At this time, the square plate 51 will lift the box 1 for a while to reduce the direct impact on the box 1, so the springs 5 ​​at the bottom of the box 1 will alleviate the shaking caused by these external factors and help stabilize the test environment of the box 1; using the springs 5 ​​to protect the box 1 can make the springs 5 ​​alleviate most of the shaking and reduce the shaking of the box 1, thereby increasing the stability of the sponge test environment and reducing the impact of external shaking on the sponge test.

[0030] like Figure 5As shown, a rubber pad 6 is fixed to the surface of the square plate 51; the rubber pad 6 is arranged in a wavy shape on the square plate 51; when working, the platform on which the square plate 51 is placed is usually relatively smooth, so the rubber pad 6 installed at the bottom of the square plate 51 can increase the friction with the platform, so that the box 1 can reduce the movement of its position on the platform; the undulating structure of the wavy rubber pad 6 can adapt to forces in different directions. When the box 1 is subjected to a lateral thrust, the side of the wave can provide resistance to prevent the lateral movement of the box 1. When the wavy rubber pad 6 is subjected to the force, it will deform and increase the contact area with the platform.

[0031] Working principle: When it is necessary to test the sound absorption of the sponge, first put multiple sponges into the slide groove 12, and then they will contact the fixed plate 17. When continuing to lower it, the angle of the fixed plate 17 will change, making room for the sponge to enter the interior of the box 1. When it is about to be lowered to the bottom, it will enter the inside of the card slot 15, thereby fixing the bottom of the sponge. At this time, the test sound source 13 can be turned on to emit a sound. When the sound contacts the sponge, part of the sound will be blocked and weakened by the sponge, so that the sound intensity transmitted to the sound sensor 18 will become weaker. The sound absorption strength of the sponge can then be observed by the sound intensity value transmitted by the sound sensor 18; when the sponge is placed into the box 1, it will contact the elastic plate 2 when inserting it into the card slot 15. When continuing to lower it, the end of the elastic plate 2 will approach the inner wall of the card slot 15 until the sponge is inserted into the deepest part of the card slot 15. When the sponge reaches the deepest part of the card slot 15, the elastic plate 2 will fit tightly with the surface of the card slot 15 to clamp the sponge; before the sponge is placed into the card slot 15 through the slide groove 12 , since it is necessary to observe the position of the slot 15 before lowering the sponge, the curved plate 3 is used to provide a guide for the sponge to enter the slot 15. When the sponge is tilted, it can touch the surface of the curved plate 3 and slide down along it to accurately enter the slot 15; while testing the sound absorption of the sponge, the sound absorption effect of the sponge in various environments is also switched, thereby starting the air pump to transmit the gas through the air guide tube 42 to the inside of the gas tank 4 at the bottom and then spray it out from the air hole 41. When the gas reaches the inside of the box 1, the temperature inside the box 1 can be adjusted; the bottom of the box 1 is usually located on a platform or a table. When the platform moves, the box 1 will also be linked to shake. At this time, the square plate 51 will lift the box 1 for a while to reduce the direct impact on the box 1, so the spring 5 at the bottom of the box 1 will alleviate the shaking caused by these external factors and help stabilize the test environment of the box 1; the platform on which the square plate 51 is placed is usually relatively smooth, so the rubber pad 6 installed at the bottom of the square plate 51 can increase the friction with the platform to reduce the position movement of the box 1 on the platform.

[0032] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention as claimed.

Claims

1. A testing device for a sound insulation sponge, comprising a box (1), characterized in that: The top of the box (1) is provided with a plurality of slide grooves (12); a plurality of fixed boxes (16) are fixedly connected to the middle of the inner wall of the box (1); the middle of the adjacent fixed boxes (16) are rotatably connected to a plurality of fixed plates (17); the fixed plates (17) and the fixed boxes (16) are connected by torsion springs; the fixed plates (17) and the slide grooves (12) are arranged in correspondence; a test sound source (13) is fixedly connected to the inner side wall of the box (1); a sound sensor (18) is fixedly connected to the inner side wall of the box (1) on the other side; a plurality of fixed blocks (14) are fixedly connected to the inner middle of the box (1); and a card slot (15) is provided on the surface of the fixed block (14).

2. A sound insulation sponge testing device according to claim 1, characterized in that: A plurality of elastic plates (2) are fixedly connected to the inner side wall of the clamping slot (15); the elastic plates (2) are arranged in an arc shape on the clamping slot (15).

3. The sound insulation sponge testing device according to claim 2, characterized in that: An arc-shaped plate (3) is fixedly connected to the top of the fixed block (14); a plurality of the arc-shaped plates (3) are arranged on the fixed block (14).

4. The sound insulation sponge testing device according to claim 3, characterized in that: A pair of gas tanks (4) are fixedly connected to the bottom of the box (1); a plurality of air holes (41) are provided on the surface of the gas tank (4); an air guide pipe (42) is fixedly connected to the bottom of the box (1); the air guide pipe (42) is arranged to penetrate the interior of the box (1); and the air guide pipe (42) and the gas tank (4) are in communication.

5. The sound insulation sponge testing device according to claim 4, characterized in that: A plurality of springs (5) are fixedly connected to the middle of the box body (1); and a square plate (51) is fixedly connected to the end of the spring (5).

6. The sound insulation sponge testing device according to claim 5, characterized in that: A rubber pad (6) is fixedly connected to the surface of the square plate (51); the rubber pad (6) is arranged in a wave shape on the square plate (51).

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