Sound absorption testing equipment for nanometer sound absorption material

Abstract

The utility model relates to the technical field of sound absorption testing, in particular to sound absorption testing equipment for a nano sound absorption material, which comprises a sound absorption testing equipment main body, square boxes are fixedly connected to two ends of the sound absorption testing equipment main body, two round rods are connected to the inner side surfaces of the two square boxes, and sliding plates are slidably connected to the outer surfaces of the two round rods. According to the sound absorption testing device, the rack can be driven to move by utilizing the rotating gear rotating shaft, so that a plurality of nano sound absorption materials can enter the sound absorption testing device, a sound absorption test can be continuously carried out, the working efficiency of the sound absorption testing device is improved, and the sound excitation device gives out sound of a set decibel. At the moment, sound can penetrate through the nano sound-absorbing material, then the sound collector on the other side collects the received sound, and then the audio analyzer can carry out sound-absorbing test on the nano sound-absorbing material so as to obtain the amount of sound absorbed by the nano sound-absorbing material, so that the sound-absorbing performance of the nano sound-absorbing material is tested.

Description

Technical Field

[0001] The utility model relates to the technical field of sound absorption testing, and specifically relates to a sound absorption testing device for nano sound absorption materials. Background Technique

[0002] Sound absorption testing devices are used to detect the absorption, reflection, transmission, and isolation effects of sound. Sound absorption testing has the advantages of high precision, wide measurement range, easy operation, short measurement time, high degree of automation, etc. It has a wide range of application fields and can provide effective acoustic performance detection and acoustic control solutions for all walks of life.

[0003] In the prior art, the patent application number "CN202220254422.1" is disclosed, which is a sound insulation detection device for a sound absorption material board, including a test box with two sound outlet openings penetrating through the test box. By respectively detecting the sound transmission of the first test board and the second test board, it is convenient to analyze and judge the optimization degree of the attracting material board, with a simple structure and convenient operation.

[0004] This sound insulation detection device can only perform batch detection. When it is necessary to detect the next group of materials, it is necessary to disassemble and reinstall them again, making it impossible to continuously detect multiple nano sound absorption materials, consuming test time, and thus affecting the working efficiency of the sound absorption testing device and being inconvenient to use. Content of the Utility Model

[0005] The purpose of the utility model is to provide a sound absorption testing device for nano sound absorption materials to solve the problems raised in the above background technique.

[0006] The purpose of the utility model can be achieved by the following technical solutions:

[0007] A sound absorption testing device for nano sound absorption materials includes a sound absorption testing device main body. Square boxes are fixedly connected to both ends of the sound absorption testing device main body. Two round rods are connected to the inner sides of the two square boxes. Slide plates are slidably connected to the outer surfaces of the two round rods. Rack bars are installed on the inner sides of the two slide plates. A cross plate is fixedly installed on the lower end surface of the rack bar. An embedding plate is slidably clamped on the front end surface of the cross plate. A U-shaped plate is connected to the lower end surface of the embedding plate;

[0008] Two positioning plates are slidably connected to the inner side of the U-shaped plate. Connecting springs are arrayedly connected between the two positioning plates and the U-shaped plate. Nano sound absorption material main bodies are arrayedly installed between the two positioning plates. The positioning plates are used to clamp the nano sound absorption material main bodies. A connecting plate is connected to the front end surface of the sound absorption testing device main body. An audio analyzer is installed on the front end surface of the connecting plate.

[0009] Preferably, an L-shaped limiting plate is connected to the rear end face of the horizontal plate. The L-shaped limiting plate is used to support the main body of the nano-sound-absorbing material. A support plate is installed inside the main body of the sound absorption test device. The left end face of the support plate is rotatably connected to a gear rotating shaft. The rack and the gear rotating shaft are meshed with each other. The right side of the gear rotating shaft penetrates through the support plate and extends to the right end face of the support plate. The right end face of the gear rotating shaft is fixedly connected to a first servo motor through a motor mounting plate.

[0010] Preferably, a connecting side plate is fixedly connected to the front end face of the embedded plate. Two bases are installed on the lower end face of the main body of the sound absorption test device. A rubber clamping seat is clamped on the front end face of the square box. Two sealing doors are rotatably installed inside the main body of the sound absorption test device.

[0011] Preferably, two closing blocks are installed inside the main body of the sound absorption test device. A bidirectional threaded rotating rod is rotatably connected to the inner side face of the main body of the sound absorption test device. The outer surface of the bidirectional threaded rotating rod is threadedly connected to a first displacement plate and a second displacement plate respectively. A sound exciter is installed on the right end face of the first displacement plate. A sound collector is installed on the left end face of the second displacement plate. The sound exciter and the sound collector are electrically connected.

[0012] Preferably, the right side of the bidirectional threaded rotating rod penetrates through the main body of the sound absorption test device and extends to the right end face of the main body of the sound absorption test device. The right end face of the bidirectional threaded rotating rod is fixedly connected to a second servo motor through a motor mounting plate. Two limiting rods are connected to the inner side face of the main body of the sound absorption test device.

[0013] Preferably, one side of the positioning plate penetrates through the U-shaped plate and extends to both ends of the U-shaped plate. One side of the connecting spring is connected to the inner side face of the U-shaped plate, and the other side of the connecting spring is connected to one side of the positioning plate.

[0014] The beneficial effects of the present utility model:

[0015] 1. In the present utility model, two elastic positioning plates can adaptively clamp and fix nano-sound-absorbing materials of different sizes. Subsequently, the clamping and installation of the embedded plate will drive a plurality of nano-sound-absorbing materials into the interior of the square box. Then, the rotating gear rotating shaft can drive the rack to move, so that a plurality of nano-sound-absorbing materials can enter the interior of the sound absorption test device, so as to continuously perform sound absorption tests and improve the working efficiency of the sound absorption test device;

[0016] 2. By starting the sound exciter of the present utility model, the sound exciter will emit the set decibel sound. At this time, the sound will pass through the nano sound-absorbing material, and then the sound collector on the other side will collect the received sound. Subsequently, the audio analyzer can conduct sound absorption tests on different nano sound-absorbing materials to obtain how much sound the nano sound-absorbing material has absorbed, so as to judge the sound absorption performance of different nano sound-absorbing materials. At the same time, the distance between the sound exciter and the sound collector can be adjusted to facilitate sound absorption tests at different distances and improve the test effect of the sound absorption test equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0019] Figure 2 is the present utility model Figure 1 installation schematic diagram of the connecting plate and the audio analyzer therein;

[0020] Figure 3 is the present utility model Figure 1 structural schematic diagram of the round rod, the slide plate and the rack therein;

[0021] Figure 4 is the present utility model Figure 3 enlarged view of part A therein;

[0022] Figure 5 is the present utility model Figure 1 installation schematic diagram of the gear rotating shaft and the rack therein;

[0023] Figure 6 is the present utility model Figure 1 structural schematic diagram of the first displacement plate and the second displacement plate therein;

[0024] The reference numerals in the drawings are as follows:

[0025] 1. Main body of sound absorption test equipment; 2. Square box; 3. Round rod; 4. Slide plate; 5. Rack; 6. Horizontal plate; 7. Embedded plate; 8. Positioning plate; 9. Connecting spring; 10. Main body of nano sound absorption material; 11. Connecting plate; 12. Audio analyzer; 13. Connecting side plate; 14. Base; 15. Rubber clamp seat; 16. Sealing door; 17. Support plate; 18. Gear rotating shaft; 19. First servo motor; 20. L-shaped limiting plate; 21. Sealing block; 22. Bidirectional threaded rotating rod; 23. First displacement plate; 24. Sound exciter; 25. Second servo motor; 26. Limiting rod; 27. Second displacement plate; 28. Sound collector; 77. U-shaped plate. Detailed implementation mode

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a 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 those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

[0027] As Figures 1 to 6 shown, a sound absorption test equipment for nano sound absorption materials includes a main body 1 of the sound absorption test equipment. The shape of the main body 1 of the sound absorption test equipment is a cylinder. When the nano sound absorption material is at the center inside the sound absorption test equipment, it can make the sound pass through the nano sound absorption material better, avoiding inaccurate sound absorption test caused by sound dispersion. Square boxes 2 are fixedly connected to both ends of the main body 1 of the sound absorption test equipment. Two round rods 3 are connected to the inner sides of the two square boxes 2. Slide plates 4 are slidably connected to the outer surfaces of the two round rods 3. Racks 5 are installed on the inner sides of the two slide plates 4. A horizontal plate 6 is fixedly installed on the lower end surface of the rack 5. An embedded plate 7 is slidably clamped on the front end surface of the horizontal plate 6. A U-shaped plate 77 is connected to the lower end surface of the embedded plate 7;

[0028] Two positioning plates 8 are slidably connected to the inner side of the U-shaped plate 77. Connecting springs 9 are arranged in an array between the two positioning plates 8 and the U-shaped plate 77. An array of nano sound absorption material main bodies 10 are installed between the two positioning plates 8. The positioning plates 8 are used to clamp the nano sound absorption material main bodies 10. The nano sound absorption material main bodies 10 are arranged at intervals for sound absorption test of multiple nano sound absorption material main bodies 10, which is convenient to use. A connecting plate 11 is connected to the front end surface of the main body 1 of the sound absorption test equipment. An audio analyzer 12 is installed on the front end surface of the connecting plate 11. The model of the audio analyzer 12 is SYS-2722. The audio analyzer 12 is used for sound absorption test.

[0029] The rear end face of the horizontal plate 6 is connected with an L-shaped limiting plate 20. The L-shaped limiting plate 20 is used to support the main body 10 of the nano-sound-absorbing material. A support plate 17 is installed inside the main body 1 of the sound absorption test equipment. A gear rotating shaft 18 is rotatably connected to the left end face of the support plate 17. The rack 5 and the gear rotating shaft 18 are meshed with each other. The right side of the gear rotating shaft 18 penetrates through the support plate 17 and extends to the right end face of the support plate 17. A first servo motor 19 is fixedly connected to the right end face of the gear rotating shaft 18 through a motor mounting plate.

[0030] The front end face of the embedding plate 7 is fixedly connected with a connecting side plate 13. By installing and using the embedding plate 7 and the connecting side plate 13, as long as the connecting side plate 13 is pulled, the connecting side plate 13 will drive the embedding plate 7 to slide out from the horizontal plate 6, so as to remove all the main bodies 10 of the nano-sound-absorbing materials, which is convenient for performing sound absorption tests on the next group of nano-sound-absorbing materials. It is convenient to use. Two bases 14 are installed on the lower end face of the main body 1 of the sound absorption test equipment. A rubber clamping seat 15 is clamped on the front end face of the square box 2. Two sealing doors 16 are rotatably installed inside the main body 1 of the sound absorption test equipment.

[0031] Two closing blocks 21 are installed inside the main body 1 of the sound absorption test equipment. By installing and using the sealing door 16 and the closing block 21, the two can be used to make the sound pass through the nano-sound-absorbing material more concentrated, improving the accuracy of the sound absorption test. A bidirectional threaded rotating rod 22 is rotatably connected to the inner side face of the main body 1 of the sound absorption test equipment. The outer surface of the bidirectional threaded rotating rod 22 is respectively threadedly connected with a first displacement plate 23 and a second displacement plate 27. A sound exciter 24 is installed on the right end face of the first displacement plate 23. The model of the sound exciter 24 is WX-EX-30W. A sound collector 28 is installed on the left end face of the second displacement plate 27. The model of the sound collector 28 is YK-DM58B. The sound exciter 24 and the sound collector 28 are electrically connected. The audio analyzer 12 can analyze the sound collected by the sound collector 28 after passing through the nano-sound-absorbing material, which is convenient for performing sound absorption tests.

[0032] The right side of the bidirectional threaded rotating rod 22 penetrates through the main body 1 of the sound absorption test equipment and extends to the right end face of the main body 1 of the sound absorption test equipment. A second servo motor 25 is fixedly connected to the right end face of the bidirectional threaded rotating rod 22 through a motor mounting plate. Two limiting rods 26 are connected to the inner side face of the main body 1 of the sound absorption test equipment. Through the arrangement of the limiting rods 26, the movement trajectories of the first displacement plate 23 and the second displacement plate 27 can be limited by the two limiting rods 26, so that the two displacement plates can move back and forth smoothly, which is convenient for adjusting the distance between the sound exciter 24 and the sound collector 28 and flexibly performing sound absorption tests.

[0033] One side of the positioning plate 8 penetrates through the U-shaped plate 77 and extends to both ends of the U-shaped plate 77. One side of the connecting spring 9 is connected to the inner side face of the U-shaped plate 77, and the other side of the connecting spring 9 is connected to one side of the positioning plate 8.

[0034] The working principle of a sound absorption testing device for a nano sound absorption material provided by the present utility model is as follows:

[0035] By placing a plurality of nano sound absorption material bodies 10 at the same interval between two positioning plates 8 equipped with connecting springs 9, the two positioning plates 8 with elasticity can adaptively clamp and fix nano sound absorption materials of different sizes. Subsequently, the L-shaped limiting plate 20 can also support and limit the lower part of the nano sound absorption material to further position the installation position of the nano sound absorption material. Then, the embedding plate 7 is snapped into the cross plate 6, and at this time, it will drive a plurality of nano sound absorption materials into the interior of the square box 2. Then, the rubber clamping seat 15 is snapped onto the front of the square box 2 to seal the entire sound absorption testing device. Then, the output shaft of the first servo motor 19 drives the gear rotating shaft 18 to rotate, and the rotating gear rotating shaft 18 can drive the two sliding plates 4 at the rack 5 to move stably and reliably on the two round rods 3. In this way, a plurality of nano sound absorption materials can enter the interior of the sound absorption testing device to continuously conduct sound absorption tests, thereby improving the working efficiency of the sound absorption testing device;

[0036] By starting the sound exciter 24, the sound exciter 24 will emit the set decibel sound. At this time, the sound will pass through the nano sound absorption material, and then the sound collector 28 on the other side will collect the sound received by the nano sound absorption material. Subsequently, the audio analyzer 12 can conduct sound absorption tests on different nano sound absorption materials to obtain how much sound the nano sound absorption material has absorbed, so as to judge the sound absorption performance of different nano sound absorption materials. Then, the output shaft of the second servo motor 25 drives the bidirectional threaded rod 22 to rotate, so that the first displacement plate 23 and the second displacement plate 27 on the second servo motor 25 can move relatively or in opposite directions, thereby adjusting the distance between the sound exciter 24 and the sound collector 28, so as to more flexibly adjust the distance to conduct sound absorption tests at different distances and improve the test effect of the sound absorption testing device.

[0037] The above shows and describes the basic principle, main features and advantages of the present utility model. Those skilled in the art of this industry should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed.

Claims

1. An acoustic absorption test device for a nano acoustic absorption material, comprising a main body (1) of the acoustic absorption test device, characterized in that: Both ends of the main body (1) of the sound absorption test device are fixedly connected with square boxes (2). Two round rods (3) are connected to the inner sides of the two square boxes (2). Slide plates (4) are slidably connected to the outer surfaces of the two round rods (3). A rack (5) is installed on the inner sides of the two slide plates (4). A cross plate (6) is fixedly installed on the lower end surface of the rack (5). An embedded plate (7) is slidably clamped on the front end surface of the cross plate (6). A U-shaped plate (77) is connected to the lower end surface of the embedded plate (7). Two positioning plates (8) are slidably connected to the inner sides of the U-shaped plate (77). Connecting springs (9) are arranged in an array between the two positioning plates (8) and the U-shaped plate (77). Nano sound absorption material bodies (10) are arranged in an array between the two positioning plates (8). The positioning plates (8) are used for clamping the nano sound absorption material bodies (10). A connecting plate (11) is connected to the front end surface of the main body (1) of the sound absorption test device. An audio analyzer (12) is installed on the front end surface of the connecting plate (11).

2. The sound absorption test device for a nano sound absorption material according to claim 1, characterized in that, An L-shaped limiting plate (20) is connected to the rear end surface of the cross plate (6). The L-shaped limiting plate (20) is used for supporting the nano sound absorption material bodies (10). A support plate (17) is installed inside the main body (1) of the sound absorption test device. A gear rotating shaft (18) is rotatably connected to the left end surface of the support plate (17). The rack (5) and the gear rotating shaft (18) are meshed with each other. The right side of the gear rotating shaft (18) penetrates through the support plate (17) and extends to the right end surface of the support plate (17). A first servo motor (19) is fixedly connected to the right end surface of the gear rotating shaft (18) through a motor mounting plate.

3. The sound absorption testing device for a nano sound absorption material according to claim 1, characterized in that, A connecting side plate (13) is fixedly connected to the front end surface of the embedded plate (7). Two bases (14) are installed on the lower end surface of the main body (1) of the sound absorption test device. A rubber clamping seat (15) is clamped on the front end surface of the square box (2). Two sealing doors (16) are rotatably installed inside the main body (1) of the sound absorption test device.

4. The sound absorption test device for a nano sound absorption material according to claim 1, characterized in that, Two closing blocks (21) are installed inside the main body (1) of the sound absorption test device. A bidirectional threaded rotating rod (22) is rotatably connected to the inner side surface of the main body (1) of the sound absorption test device. A first displacement plate (23) and a second displacement plate (27) are respectively threadedly connected to the outer surface of the bidirectional threaded rotating rod (22). A sound exciter (24) is installed on the right end surface of the first displacement plate (23). A sound collector (28) is installed on the left end surface of the second displacement plate (27). The sound exciter (24) and the sound collector (28) are electrically connected to each other.

5. The sound absorption test device for a nano sound absorption material according to claim 4, characterized in that, The right side of the bidirectional threaded rotating rod (22) penetrates through the main body (1) of the sound absorption test device and extends to the right end surface of the main body (1) of the sound absorption test device. A second servo motor (25) is fixedly connected to the right end surface of the bidirectional threaded rotating rod (22) through a motor mounting plate. Two limiting rods (26) are connected to the inner side surface of the main body (1) of the sound absorption test device.

6. The sound absorption test device for a nano sound absorption material according to claim 1, characterized in that One side of the positioning plate (8) penetrates through the U-shaped plate (77) and extends to both ends of the U-shaped plate (77). One side of the connecting spring (9) is connected to the inner side surface of the U-shaped plate (77), and the other side of the connecting spring (9) is connected to one side of the positioning plate (8).

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