Adjustable enclosure for sound absorption testing

Abstract

This invention provides an adjustable enclosure device for sound absorption testing, belonging to the field of acoustic material laboratory testing. It includes multiple enclosure strips connected end-to-end to form a closed polygonal structure. Each enclosure strip includes several adjustment components for adjusting its length. This invention can be used to test rectangular enclosure components of different models, thus reducing the impact of the enclosure device's sound absorption performance on the test results, making the test results closer to the actual performance of the product. It also improves the utilization rate of the enclosure components and the installation efficiency of the test specimens to a certain extent.

Description

Technical Field

[0001] This utility model relates to the field of laboratory testing of acoustic materials, specifically to an adjustable enclosure device for sound absorption testing. Background Technology

[0002] In the field of environmental protection equipment technology, testing the sound absorption performance of enclosure components is an important task, as the accuracy of the test results directly affects the evaluation of the noise reduction effect of the enclosure components in practical applications. Currently, under existing technological conditions, the common method for conducting sound absorption tests on enclosure components is to clamp the enclosure components onto specific tooling.

[0003] However, due to the wide variety of enclosure components on the market, and the significant differences in size and specifications between different types, it is necessary to specially manufacture enclosure fixtures for each different specification of enclosure component during actual testing. Only after the enclosure component is securely fixed using these specific specification enclosure fixtures can subsequent sound absorption tests be carried out smoothly.

[0004] While existing enclosure fixtures can meet the basic requirements for sound absorption testing of enclosure components to a certain extent, this testing method has significant drawbacks. Specifically, whenever different specifications of enclosure components need to be tested, the matching enclosure fixtures must also be replaced. Frequent changes in enclosure fixtures not only consume a lot of time and manpower, leading to low efficiency in enclosure component testing, but also require materials and energy to manufacture each new set of enclosure fixtures, increasing energy consumption in fixture production and production, which is inconsistent with the current development concept of energy conservation, emission reduction, and improved resource utilization efficiency.

[0005] Therefore, if a device can be developed that can be applied to the testing of multiple enclosure components of different specifications, so that the same device can complete the testing of multiple enclosure components, it will help to significantly improve the efficiency of enclosure component testing, and at the same time effectively reduce energy consumption in the tooling production process, which has important practical significance. Utility Model Content

[0006] In view of this, the present invention provides an adjustable enclosure device for sound absorption testing. The present invention can be used to test rectangular enclosures of different models, which can reduce the influence of the sound absorption performance of the enclosure device on the test results, make the test results closer to the actual performance of the product, and also improve the utilization rate of the enclosure and the installation efficiency of the test specimens to a certain extent.

[0007] To solve the above-mentioned technical problems, this utility model provides an adjustable enclosure device for sound absorption testing, including multiple enclosure strips. The multiple enclosure strips are connected end to end to form a closed polygonal structure. The polygonal structure is a planar structure, and each enclosure strip includes several adjustment components. The adjustment components can be used to adjust the length of the enclosure strip. After the length of the enclosure strip is adjusted, enclosure parts with different structures can be manufactured.

[0008] Each adjustment component includes a base plate, which is a cuboid plate structure. The base plate has a fixed middle layer plate and a movable middle layer plate on its side. The base plate is connected to the fixed middle layer plate. The length of the base plate is greater than the length of the fixed middle layer plate. The movable middle layer plate can slide along the length of the base plate. After the movable middle layer plate slides, the length of the enclosure strip can be adjusted. A locking structure is also provided between the movable middle layer plate and the base plate to fix the position of the movable middle layer plate on the base plate.

[0009] The movable shelf has a long hole running through it at one end near the fixed middle shelf. The length of the long hole is in the same direction as the sliding direction of the movable shelf. A bolt is also fixed on the bottom plate. The screw of the bolt is located in the long hole and can slide back and forth in the long hole. The long hole and the bolt can limit the sliding distance of the movable shelf. The nut of the bolt can be turned to fix or unfix the movable shelf.

[0010] The movable shelf has several locking strips at one end near the fixed middle side plate, and corresponding locking strips have locking grooves at the end of the fixed middle shelf. The locking strips can slide in the locking grooves, and the sliding direction of the movable shelf can be limited by the locking strips and locking grooves.

[0011] A top plate is provided at the end of the fixed middle layer or the movable middle layer away from the bottom plate. The top plate can further reinforce the structure of the enclosure strip. The length of the top plate is the same as that of the bottom plate. The top plate and the bottom plate can protect the gap between the fixed middle layer and the movable middle layer. An elongated hole is also provided through the top plate. The nut of the bolt can slide in the elongated hole. The elongated hole can make room for the bolt. The nut of the bolt abuts against the side of the top plate to fix the movable middle layer.

[0012] The side of the movable layer plate near the bottom plate is also provided with a bottom outer edge plate. The bottom outer edge plate can not only strengthen the structure of the movable layer plate, but also make the side of the enclosure strip near the bottom plate a flat structure.

[0013] The top plate is connected to the movable middle plate. The fixed middle plate is also provided with a top outer edge plate on the side near the top plate. The top outer edge plate can strengthen the structure of the fixed middle plate and also make the side of the enclosure strip near the top plate a flat structure.

[0014] The fixture consists of four rectangular strips that are interconnected, meaning it can support rectangular enclosure components of different models.

[0015] In summary, compared with the prior art, this application includes at least one of the following beneficial technical effects:

[0016] 1. Adaptable to various enclosure specifications, reducing energy consumption: This device uses multiple enclosure strips connected end-to-end to form a closed polygonal structure. Each enclosure strip is equipped with several adjustable length components, allowing for flexible adjustment of the strip length according to the size specifications of different rectangular enclosure components, thus adapting to the testing needs of various enclosure specifications. Compared to existing technologies that require specially made matching enclosure fixtures for different specifications of enclosure components, this invention eliminates the need for frequent replacement and manufacture of specific fixtures, significantly reducing the energy consumption generated by enclosure fixture manufacturing, and aligning with the development concept of energy conservation, emission reduction, and improved resource utilization efficiency.

[0017] 2. Improved Testing Efficiency: Since the same device can complete the testing of various enclosure components, there is no need to spend a lot of time and manpower changing the corresponding enclosure fixtures to replace different specifications of enclosure components during the actual testing process. Operators only need to simply adjust the length of the enclosure strips to quickly and securely fix different enclosure components and carry out sound absorption tests, effectively improving the work efficiency of enclosure component testing and shortening the testing cycle.

[0018] 3. Stable structure and precise adjustment: In the adjustment assembly, the base plate is connected to the fixed middle plate, and the movable middle plate can slide along the length of the base plate, with a locking structure to fix its position. The elongated holes and bolts not only precisely limit the sliding distance of the movable middle plate, but also allow for easy fixing or unfixing of the movable middle plate by turning the nut; the cooperation of the locking strip and the locking groove further precisely limits the sliding direction of the movable middle plate, ensuring the stability and accuracy of the adjustment process, so that the length of the enclosure strip can reliably support the enclosure components after adjustment, ensuring the accuracy of the test results.

[0019] 4. Reinforced structure and strong protection: The top plate, which is set at the end of the fixed middle plate or the movable middle plate away from the bottom plate, as well as the bottom outer edge plate and the top outer edge plate, not only strengthens the overall structure of the enclosure strip and enhances the stability and durability of the device, but also makes the corresponding sides of the enclosure strip form a planar structure. At the same time, the top plate and the bottom plate can effectively protect the gap between the fixed middle plate and the movable middle plate, avoid external factors from interfering with the internal structure of the device, and extend the service life of the device. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of an adjustable enclosure device for sound absorption testing according to the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of the enclosure strip of this utility model;

[0022] Figure 3 This utility model Figure 2 Schematic diagram of the structure at point A;

[0023] Figure 4 This is an exploded view of the enclosure strip of this utility model.

[0024] Figure 5 This utility model Figure 4 A schematic diagram of the structure at point B.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Enclosure strip; 2. Adjustment assembly; 3. Base plate; 4. Fixed middle layer plate; 5. Moving middle layer plate; 6. Long strip hole; 7. Bolt; 8. Clip; 9. Clip groove; 10. Top plate; 11. Long oval hole; 12. Bottom outer edge plate; 13. Top outer edge plate. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of this utility model. Figures 1-5 The technical solutions of the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0028] This embodiment provides an adjustable enclosure device for sound absorption testing, such as... Figures 1-5 As shown: It includes 4 enclosure strips 1, which are connected end to end to form a closed rectangular frame structure, and each enclosure strip 1 has an adjustment component 2, which can be used to adjust the length of the enclosure strip 1.

[0029] Specifically, the adjustment component 2 includes a base plate 3 and a fixed middle layer plate 4 fixedly disposed on the side of the base plate 3, such as... Figures 1-4 As shown: One end of the base plate 3 is located at the same position as one end of the fixed middle layer plate 4, and the length of the base plate 3 is greater than the length of the fixed middle layer plate 4. A movable middle layer plate 5 is also slidably provided on the end of the base plate 3 near the fixed middle layer plate 4. The movable middle layer plate 5, the fixed middle layer plate 4 and the base plate 3 are combined to form the enclosure strip 1. The movable middle layer plate 5 can slide along the length direction of the base plate 3. When the movable middle layer plate 5 slides enough, the length of the enclosure strip 1 can be adjusted. Furthermore, a locking structure is provided between the base plate 3 and the movable middle layer plate 5. The locking structure is used to fix the position of the movable middle layer plate 5 after it slides, or to cancel the fixing effect of the movable middle layer plate 5.

[0030] Preferably, the locking structure includes bolts 7 disposed on the base plate 3, such as... Figure 3 , 5 As shown: Bolt 7 is located on the bottom plate 3 near the side of the movable layer plate 5 and is arranged perpendicular to the side of the bottom plate 3. Correspondingly, bolt 7 also has an elongated hole 11 through the movable layer plate 5. The length direction of the elongated hole 11 is consistent with the length direction of the bottom plate 3, and the screw of bolt 7 is placed in the elongated hole 11. When the movable layer plate 5 slides, the screw of bolt 7 can slide in the elongated hole 11, and the nut on bolt 7 can be fixed in position by contacting the side of the movable layer plate 5 after being rotated.

[0031] Preferably, the fixed middle layer plate 4 is further provided with several slots 9 at one end near the movable middle layer plate 5, such as... Figure 4 , 5 As shown: The end of the slot 9 is connected to the end of the fixed middle layer plate 4, and a number of locking strips are formed on the end of the movable middle layer plate 5 corresponding to the slot 9. The number of locking strips is the same as that of the slot 9, and the elongated hole 11 is set on the locking strip. That is, the locking strip and the slot 9 can slide and limit the movable middle layer plate 5. At the same time, the length of the locking strip, the slot 9 and the elongated hole 11 are the same, so that the movable middle layer plate 5 can always be guided during the sliding process.

[0032] Furthermore, a top plate 10 is fixedly provided on the side of the movable layer plate 5 away from the bottom plate 3. The length of the top plate 10 is the same as the length of the bottom plate 3. The end of the top plate 10 is located at the same position as the end of the movable layer plate 5 away from the fixed middle plate. That is, the top plate 10 and the bottom plate 3 can seal the gap between the movable layer plate 5 and the fixed middle plate 4 after the movable layer plate 5 slides. This allows the sound absorption test to run normally. Correspondingly, an elongated hole 6 is also fixedly provided at the end of the top plate 10. The elongated hole 6 is in the same direction as the sliding of the movable layer plate 5. The length of the elongated hole 6 is also the same as the length of the elongated hole 11. That is, the screw of the bolt 7 can slide in the elongated hole 6. After the nut on the bolt 7 abuts against the side of the top plate 10, the position of the movable layer plate 5 can be fixed.

[0033] Correspondingly, a bottom outer edge plate 12 is also provided on the side of the movable layer plate 5 near the bottom plate 3. The end of the bottom outer edge plate 12 is located at the same position as the end of the movable layer plate 5 away from the fixed middle layer plate 4. When the movable layer plate 5 is not pulled outward, the other end of the bottom outer edge plate 12 abuts against the end of the bottom plate 3. Thus, the bottom outer edge plate 12 can not only increase the structural strength of the enclosure strip 1, but also make the side of the enclosure strip 1 near the bottom plate 3 a planar structure.

[0034] Correspondingly, a top outer edge plate 13 is provided on the side of the fixed middle layer plate 4 near the top plate 10. The end of the top outer edge plate 13 is connected to the end of the fixed middle layer plate 4. When the middle layer plate 5 is not pulled outward, the other end of the top outer edge plate 13 abuts against the end of the top plate 10. Thus, the top outer edge plate 13 can not only increase the structural strength of the enclosure strip 1, but also make the side of the enclosure strip 1 near the top plate 10 a planar structure.

[0035] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. An adjustable enclosure device for sound absorption testing, characterized in that: It includes multiple enclosure strips (1), which are connected end to end to form a closed polygonal structure. Each enclosure strip (1) includes several adjustment components (2), which can be used to adjust the length of the enclosure strip (1).

2. The adjustable enclosure device for sound absorption testing as described in claim 1, characterized in that: Each adjustment component (2) includes a base plate (3). The base plate (3) has a fixed middle layer plate (4) and a movable middle layer plate (5) on its side. The base plate (3) is connected to the fixed middle layer plate (4). The length of the base plate (3) is greater than the length of the fixed middle layer plate (4). The movable middle layer plate (5) can slide along the length of the base plate (3). A locking structure is also provided between the movable middle layer plate (5) and the base plate (3). The locking structure is used to fix the position of the movable middle layer plate (5) on the base plate (3).

3. The adjustable enclosure device for sound absorption testing as described in claim 2, characterized in that: The movable layer plate (5) is provided with an elongated hole (6) at one end near the fixed middle layer plate (4). The length direction of the elongated hole (6) is consistent with the sliding direction of the movable layer plate (5). A bolt (7) is also fixed on the bottom plate (3). The screw of the bolt (7) is located in the elongated hole (6) and can slide back and forth in the elongated hole (6). The nut of the bolt (7) can be rotated to fix or unfix the movable layer plate (5).

4. The adjustable enclosure device for sound absorption testing as described in claim 2, characterized in that: The active layer plate (5) has several locking strips (8) at one end near the fixed middle side plate. Corresponding to the locking strips (8), a slot (9) is provided at the end of the fixed middle layer plate (4). The locking strips (8) can slide in the slot (9).

5. The adjustable enclosure device for sound absorption testing as described in claim 3, characterized in that: The fixed middle plate (4) or the movable middle plate (5) is also provided with a top plate (10) at the end away from the bottom plate (3). The length of the top plate (10) is the same as the length of the bottom plate (3). The top plate (10) is also provided with an elongated hole (11) through it, and the nut of the bolt (7) can slide in the elongated hole (11).

6. The adjustable enclosure device for sound absorption testing as described in claim 2, characterized in that: The active layer plate (5) is also provided with a bottom outer edge plate (12) on the side near the bottom plate (3).

7. The adjustable enclosure device for sound absorption testing as described in claim 5, characterized in that: The top plate (10) is connected to the movable middle plate (5), and the fixed middle plate (4) is also provided with a top outer edge plate (13) on the side near the top plate (10).

8. The adjustable enclosure device for sound absorption testing as described in claim 1, characterized in that: The number of enclosure strips (1) is 4, and they are connected to each other in a rectangular structure.

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