Automatic testing and sorting device for sound insulation performance

Abstract

The utility model discloses an automatic test sorting device of sound insulation performance relates to sound insulation test technical field, including sound insulation room and the sound insulation wall of vertical setting in its inner center, and the installation cavity center has opened the horizontal through of installation cavity, the outside of installation cavity is equipped with limit mechanism in sound insulation wall inside corresponding, and limit mechanism includes two limit board no.

Description

Technical Field

[0001] This utility model relates to the field of sound insulation testing technology, specifically to an automatic sound insulation performance testing and sorting device. Background Technology

[0002] Sound insulation performance testing is a core means of evaluating the ability of materials or structures to block the propagation of sound waves. Its essence is to provide data support for noise reduction design in fields such as architecture, transportation, home appliances, and electronic equipment by quantifying the degree of sound energy attenuation. The testing principle is based on the transmission loss theory in acoustics: when a sound wave is incident on the material under test from the sound source side, some sound energy is reflected, absorbed, or transmitted. By measuring the difference between the transmitted sound pressure level and the incident sound pressure level (i.e., sound insulation), the sound insulation effect of the material can be directly reflected.

[0003] Existing equipment mostly uses mechanical methods such as bolt fastening and pressure plate clamping to fix materials. Operators need to manually adjust the position of the clamps and lock them one by one. Moreover, the fixed clamps can only be used for materials of specific sizes. When testing materials of different sizes, there are gaps between the clamps and the materials, which affects the test results. If different specifications of test pieces are tested, the clamps need to be changed, resulting in low testing efficiency.

[0004] In view of the above, this application is hereby submitted. Utility Model Content

[0005] The purpose of this invention is to provide an automatic sound insulation performance testing and sorting device to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model provides an automatic sound insulation performance testing and sorting device. The device includes a soundproof chamber and a soundproof wall vertically installed at its center. A horizontally penetrating mounting cavity is formed at the center of the soundproof wall. The device is characterized in that a limiting mechanism is provided inside the soundproof wall corresponding to the outer side of the mounting cavity. The limiting mechanism includes: Two limiting plates are slidably disposed in the two opposite side walls of the mounting cavity along the vertical direction. Two limiting plates are slidably disposed in the two opposite side walls of the mounting cavity along the horizontal direction. A wedge plate is horizontally fixedly connected to the end of the limiting plate along its length direction. The upper and lower ends of the limiting plate are fixedly connected to the wedge plate. The ends of the wedge plate and the wedge plate are both inclined and are adapted to each other. The soundproof wall divides the interior of the soundproof room into two chambers, which are used to house a noise generating device and a sound detection device, respectively.

[0007] Preferably, the first limiting plate, the first wedge plate, the second limiting plate, and the second wedge plate are all sound-absorbing plates; the cross-section of the central cavity formed by the first limiting plate and the second limiting plate is square; the cross-section of the material to be tested is also square.

[0008] Preferably, four rotating shafts are evenly installed outside the mounting cavity inside the soundproof wall, and each rotating shaft is equipped with a sprocket. The outer sides of the four sprockets are engaged with the same chain. Tensioning wheels are provided at the four corners of the mounting cavity on the inner side of the chain, and the tensioning wheels are rotatably mounted inside the soundproof wall.

[0009] Preferably, each of the rotating shafts is also equipped with a gear, which meshes with a rack rod, and the rack rods are respectively fixedly connected to a first limiting plate and a second limiting plate; the side of the rack rod away from the gear is slidably connected to the soundproof wall.

[0010] Preferably, the four tensioning pulleys also engage with the chain.

[0011] Preferably, a drive mechanism is coaxially provided on the side of one of the rotating shafts away from the gear, and a crank handle is fixed on the side of the drive mechanism away from the sprocket, with the crank handle located outside the soundproof wall.

[0012] Preferably, the drive mechanism located on the side of the crank handle near the sprocket includes a limiting block 1 coaxially fixed to the crank handle, and a fixing post coaxially provided on the side of the limiting block 1 away from the crank handle, with the end of the fixing post away from the crank handle coaxially fixed to the sprocket.

[0013] Preferably, a groove is provided on the outer arc wall of the limiting block one along its circumference, and a limiting block two is fixed on the outer edge of the side wall of the fixing post away from the sprocket. The end of the limiting block two away from the fixing post can extend into the groove of the limiting block one, and the curvature of the outer arc wall of the fixing post is consistent with the curvature of the outer arc wall of the limiting block one.

[0014] Preferably, a coil spring is sleeved on the outer side of the limiting block, and the two ends of the coil spring are fixedly connected to the crank handle and the fixing post, respectively; a limiting hole is provided on the crank handle, and a limiting blind hole is provided on the soundproof wall.

[0015] Compared with the prior art, the beneficial effects of this utility model are: 1. Crank the handle to drive the sprocket and chain to rotate, so that limit plate one and limit plate two slide synchronously and clamp the four walls of the material to be tested.

[0016] 2. After clamping the four walls of the material to be tested, align the limiting hole on the crank handle with the limiting blind hole on the soundproof wall, and use the limiting rod to pass through the limiting hole and insert into the limiting blind hole to limit the limiting plate one and the limiting plate two. Attached Figure Description

[0017] Figure 1 A schematic diagram of the overall structure of an automatic sound insulation performance testing and sorting device; Figure 2 This is a schematic diagram of the limiting mechanism in an automatic sound insulation performance testing and sorting device; Figure 3 This is a schematic diagram of the structure of the limiting plate two in an automatic sound insulation performance testing and sorting device; Figure 4 This is a schematic diagram of the drive mechanism in an automatic sound insulation performance testing and sorting device.

[0018] In the picture: 10. Soundproof room; 11. Soundproof wall; 111. Mounting cavity; 12. Limiting plate one; 121. Circumvention groove; 122. Wedge plate one; 13. Limiting plate two; 131. Fixing plate; 132. Wedge plate two; 14. Rack and pinion; 15. Gear; 20. Sprocket; 201. Fixed post; 21. Chain; 22. Tensioner; 23. Limiting block one; 24. Limiting block two; 25. Coil spring; 26. Crank handle. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see the appendix Figure 1 To be continued Figure 4 This utility model provides an automatic sound insulation performance testing and sorting device, comprising a soundproof chamber 10 and a soundproof wall 11 vertically arranged at its center. The soundproof wall 11 has a horizontally penetrating mounting cavity 111 at its center. The device is characterized in that a limiting mechanism is provided inside the soundproof wall 11 corresponding to the outer side of the mounting cavity 111. The limiting mechanism includes: like Figure 2 As shown, two limiting plates 12 are slidably disposed in the vertically opposite side walls of the mounting cavity 111, and two limiting plates 13 are slidably disposed in the horizontally opposite side walls of the mounting cavity 111. A wedge plate 122 is horizontally fixedly connected to the end of the limiting plate 12 along its length direction. The upper and lower ends of the limiting plate 13 are fixedly connected to wedge plates 132. The ends of the wedge plates 122 and 132 that are close to each other are both inclined and they are mutually compatible. The soundproof wall 11 divides the interior of the soundproof room 10 into two chambers, which are used to place the noise generating device and the sound detection device, respectively.

[0021] Limiting plate 12, wedge plate 122, limiting plate 2 13, and wedge plate 2 132 are all sound-absorbing plates. For example... Figure 1 and Figure 2As shown, the cross-section of the central cavity formed by limiting plate 12 and limiting plate 13 is square, and the cross-section of the material to be tested is also square with the same dimensions. Figure 2 The central cavity has the same specifications.

[0022] like Figure 2 As shown, four rotating shafts are evenly installed around the perimeter of the mounting cavity 111 inside the soundproof wall 11. Each shaft has a sprocket 20 mounted on it, and the outer sides of the four sprockets 20 are engaged with the same chain 21. Tensioners 22 are provided at the four corners of the mounting cavity 111 on the inner side of the chain 21, and these tensioners 22 are rotatably mounted inside the soundproof wall 11. The four tensioners 22 also engage with the chain 21.

[0023] like Figure 2 As shown, each rotating shaft is also equipped with a gear 15, which meshes with a rack rod 14. Multiple rack rods 14 are fixedly connected to the first limiting plate 12 and the second limiting plate 13 respectively; the side of the rack rod 14 away from the gear 15 is slidably connected to the soundproof wall 11.

[0024] like Figure 2 and Figure 4 As shown, a drive mechanism is coaxially provided on the side of one of the rotating shafts away from the gear 15, and a crank 26 is fixed on the side of the drive mechanism away from the sprocket 20. The crank 26 is located on the outside of the soundproof wall 11.

[0025] like Figure 4 As shown, the drive mechanism located on the side of the crank handle 26 near the sprocket 20 includes a limiting block 23 coaxially fixed to the crank handle 26. A fixing post 201 is coaxially provided on the side of the limiting block 23 away from the crank handle 26. The end of the fixing post 201 away from the crank handle 26 is coaxially fixed to the sprocket 20.

[0026] like Figure 4 As shown, a groove is formed along the circumference of the outer arc wall of the limiting block 23. A limiting block 24 is fixed to the outer edge of the side wall of the fixing post 201 away from the sprocket 20. The end of the limiting block 24 away from the fixing post 201 can extend into the groove of the limiting block 23. The curvature of the outer arc wall of the fixing post 201 is the same as that of the outer arc wall of the limiting block 23. A limiting hole is formed on the crank handle 26, and a limiting blind hole is formed on the sound insulation wall 11.

[0027] like Figure 4 As shown, a coil spring 25 is sleeved on the outer side of the limiting block 23, and the two ends of the coil spring 25 are fixedly connected to the crank handle 26 and the fixing post 201, respectively. It should be noted that the limiting block 23 is cylindrical in shape, and the groove of the limiting block 23 can be regarded as a groove dug out circumferentially on its outer arc wall.

[0028] Working principle: The material to be tested is placed in the mounting cavity 111 of the soundproof wall 11. The crank handle 26 is pushed inward, and the groove of the limiting block 23 on the crank handle 26 engages with the limiting block 24. The crank handle 26 is turned to drive the sprocket 20 and chain 21 to rotate, so that the four limiting plates 12 and 23 slide synchronously and clamp the four walls of the material to be tested. At this time, the limiting hole on the crank handle 26 is aligned with the limiting blind hole on the soundproof wall 11. The limiting rod is inserted into the limiting blind hole through the limiting hole. The limiting plate 12, wedge plate 122, limiting plate 23, and wedge plate 232 are all sound-absorbing plates to reduce sound leakage. The noise generating device generates noise in one cavity of the soundproof room 10, and the sound detection device detects the penetrating sound pressure in another cavity. The processing terminal determines the sound insulation level based on the data. The crank handle 26 is rotated in the reverse direction to remove the material to be tested. The operator sorts the material to the designated position, prints a label, and scans the code for sorting. When the crank handle 26 is not cranked, i.e., when the coil spring 25 is in its normal state, the groove of the first limiting block 23 disengages from the second limiting block 24.

Claims

1. An automatic sound insulation performance testing and sorting device, comprising a soundproof chamber (10) and a soundproof wall (11) vertically disposed at the center of the chamber, wherein a horizontally penetrating mounting cavity (111) is formed at the center of the soundproof wall (11), characterized in that: The soundproof wall (11) is provided with a limiting mechanism inside corresponding to the outer side of the mounting cavity (111). The limiting mechanism includes: Two limiting plates (12) are slidably disposed in the two opposite sides of the mounting cavity (111) along the vertical direction, and two limiting plates (13) are slidably disposed in the two opposite sides of the mounting cavity (111) along the horizontal direction. Wedge plate one (122) is horizontally fixed to the end of limit plate one (12) along its length direction. Wedge plate two (132) is fixedly connected to the upper and lower ends of limit plate two (13). The ends of wedge plate one (122) and wedge plate two (132) that are close to each other are both inclined and they are compatible with each other. The soundproof wall (11) divides the interior of the soundproof room (10) into two chambers, which are used to house the noise generating device and the sound detection device, respectively.

2. The automatic sound insulation performance testing and sorting device as described in claim 1, characterized in that: The limiting plate one (12), wedge plate one (122), limiting plate two (13), and wedge plate two (132) are all sound-absorbing plates; the cross-section of the central cavity formed by the limiting plate one (12) and the limiting plate two (13) is square; the cross-section of the material to be tested is also square.

3. The automatic sound insulation performance testing and sorting device as described in claim 1, characterized in that: The soundproof wall (11) has four rotating shafts evenly installed outside the mounting cavity (111). Each rotating shaft is equipped with a sprocket (20), and the four sprockets (20) are engaged with the same chain (21) on their outer sides. Tensioning wheels (22) are provided at the four corners of the mounting cavity (111) on the inner side of the chain (21), and the tensioning wheels (22) are rotatably disposed inside the soundproof wall (11).

4. The automatic sound insulation performance testing and sorting device as described in claim 3, characterized in that: Each of the rotating shafts is also equipped with a gear (15), which meshes with a rack (14). The racks (14) are fixedly connected to a first limiting plate (12) and a second limiting plate (13), respectively. The side of the rack (14) away from the gear (15) is slidably connected to the soundproof wall (11).

5. The automatic sound insulation performance testing and sorting device as described in claim 4, characterized in that: The four tensioning pulleys (22) also engage with the chain (21).

6. The automatic sound insulation performance testing and sorting device as described in claim 4, characterized in that: One of the shafts is coaxially provided with a drive mechanism on the side away from the gear (15), and a crank (26) is fixed on the side of the drive mechanism away from the sprocket (20). The crank (26) is located outside the soundproof wall (11).

7. The automatic sound insulation performance testing and sorting device as described in claim 6, characterized in that: The drive mechanism located on the side of the crank handle (26) near the sprocket (20) includes a limiting block (23) coaxially fixed on the crank handle (26). A fixing post (201) is coaxially provided on the side of the limiting block (23) away from the crank handle (26). The end of the fixing post (201) away from the crank handle (26) is coaxially fixed on the sprocket (20).

8. The automatic sound insulation performance testing and sorting device as described in claim 7, characterized in that: The outer arc wall of the limiting block one (23) is provided with a groove along its circumference. The outer edge of the side wall of the fixing column (201) away from the sprocket (20) is fixed with a limiting block two (24). The end of the limiting block two (24) away from the fixing column (201) can extend into the groove of the limiting block one (23). The curvature of the outer arc wall of the fixing column (201) is consistent with the curvature of the outer arc wall of the limiting block one (23).

9. The automatic sound insulation performance testing and sorting device as described in claim 8, characterized in that: The outer side of the limiting block (23) is fitted with a coil spring (25), and the two ends of the coil spring (25) are fixedly connected to the crank handle (26) and the fixing post (201) respectively; the crank handle (26) has a limiting hole, and the soundproof wall (11) has a limiting blind hole.

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