Device for testing sound insulation performance of new material modified nylon strip

Abstract

The utility model relates to the field of nylon strip detection, in particular to a new material modified nylon strip sound insulation performance testing device which comprises a sound insulation box, a box cover, a locking part, a sound insulation felt, a mounting plate, a fixing block, a sounder and the like, a box cover is hinged to the top of the soundproof box, a locking part is arranged on the front side of the box cover, the end of the locking part is locked on the front side of the soundproof box, soundproof felts are glued to all the end faces in the soundproof box and the box cover, mounting plates are arranged on the two sides of the inner bottom of the soundproof box, fixing blocks are slidably arranged on the mounting plates, and the fixing blocks are connected with the soundproof box. And a sounder is clamped on the fixed block on one side. According to the utility model, the sound generator and the sound level meter are arranged at relative positions, so that repeated testing can be carried out under the same condition, the accuracy and repeatability of testing results are improved, and accurate measurement of sound insulation performance indexes is ensured.

Description

Technical Field

[0001] The utility model relates to the field of nylon strip detection, in particular to a device for testing the sound insulation performance of new material modified nylon strips. Background Art

[0002] Modified nylon strips are engineering plastic products made by modifying standard nylon materials with various modifiers or fillers. Modified nylon strips are widely used in various industries, including transportation, construction, and home appliances.

[0003] For example, in automobile manufacturing, modified nylon strips can be used to make door frame sealing strips or engine hood gaskets to reduce the entry of external noise during driving; in the construction field, it can be used to seal windows or door frames to help isolate external noise.

[0004] If modified nylon strips are used in specific sound insulation application scenarios but have not been tested for sound insulation performance, there is no guarantee that they can meet the design requirements. This may cause the product to fail to achieve the expected sound insulation effect in actual use, thereby affecting user experience and satisfaction; and untested products may have defects in sound insulation performance, such as poor or inconsistent sound insulation effects, which will ultimately lead to a decline in product quality.

[0005] Therefore, it is urgent to design a new material modified nylon strip sound insulation performance testing device to solve the above technical problems. Utility Model Content

[0006] In order to overcome the above-mentioned shortcomings of the prior art, the utility model provides a new material modified nylon strip sound insulation performance testing device.

[0007] The technical solution of the utility model is: a new material modified nylon strip sound insulation performance testing device, including a sound insulation box, a box cover, a locking part, a sound insulation felt, a mounting plate, a fixing block, a sound generator, a sound transmission tube, a partition, a guide rod, a spring and a pressure plate, the top of the sound insulation box is hinged with a box cover, the front side of the box cover is provided with a locking part, the end of the locking part is locked to the front side of the sound insulation box, the sound insulation box and each end surface of the box cover are glued with sound insulation felt, mounting plates are provided on both sides of the bottom of the sound insulation box, fixing blocks are slidably provided on the mounting plates, a sound generator is clamped on one side of the fixing block, there are two sound transmission tubes, A partition is provided in the middle of the sound insulation box, and one of the sound transmission tubes is provided on the side of the partition close to the sound generator. Guide rods are slidably provided on both sides of the right part of the partition, and springs are provided on the left ends of the guide rods. A pressure plate is movably placed in the middle of the partition, and the same side of the springs on both sides is connected to the pressure plate. A pull ring is provided on the right side of the upper part of the partition, and a certain distance of placement gap is left between the pressure plate and the partition. The other sound transmission tube is provided on the right side of the pressure plate, and a through hole is opened in the partition and the middle of the pressure plate. The sound transmission tubes on both sides are connected to each other through the through hole, and a sound level meter is clamped on the other fixed block.

[0008] Furthermore, a handle is included, and the handle is hinged on the lower front part of the sound insulation box.

[0009] Furthermore, the locking part includes a buckle and a torsion spring, buckles are hinged on both sides of the front side of the box cover, and slots for engaging with the buckles are opened on both sides of the front side of the sound insulation box, and torsion springs are provided in the hinges between the buckle and the box cover.

[0010] Furthermore, screws are included. Screws are threaded through the inner sides of the fixing blocks on both sides. The end of the screw on the left side contacts the outside of the sound generator, and the end of the screw on the right side contacts the outside of the sound level meter.

[0011] Furthermore, a controller is also included. The controller is arranged on the front side of the top of the box cover, and the sound generator and the sound level meter are both electrically connected to the controller.

[0012] Furthermore, the controller and the sound level meter are connected by wiring, and the wiring between the controller and the sound level meter is pluggable.

[0013] Furthermore, a display screen is included. The front side of the top of the box cover is hinged with the display screen, and the display screen is electrically connected to the controller.

[0014] Beneficial effects: 1. The utility model can repeat the test under the same conditions by setting the relative positions of the sound generator and the sound level meter, thereby improving the accuracy and repeatability of the test results and ensuring the accurate measurement of the sound insulation performance index.

[0015] 2. The utility model makes the installation and fixation of the test sample simple and quick through the guide rod, spring and locking part, reducing the complexity and human error in the operation process.

[0016] 3. The utility model is connected to the sound generator and the sound level meter through the controller, which can automatically control the start and stop of the sound generator and display and record the data collected by the sound level meter in real time, simplifying the test process and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0018] Figure 2 It is a three-dimensional structural diagram of the components such as the mounting plate, fixing block and sound generator of the utility model.

[0019] Figure 3 This is a schematic cross-sectional view of the sound insulation box of the present invention after being cut open to show the internal components.

[0020] Figure 4 It is a three-dimensional structural diagram of the components such as the box cover, controller and display screen of the utility model.

[0021] The meaning of the reference numerals in the figure: 1-soundproof box, 2-box cover, 3-handle, 4-clip, 5-torsion spring, 6-soundproof felt, 7-mounting plate, 8-fixing block, 81-screw, 9-sound generator, 10-sound transmission tube, 11-partition, 12-guide rod, 13-spring, 14-pressure plate, 15-sound level meter, 16-controller, 17-display screen. DETAILED DESCRIPTION

[0022] The following will be combined with the 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.

[0023] Example: A new material modified nylon strip sound insulation performance testing device, such as Figures 1-4As shown, it includes a sound insulation box 1, a box cover 2, a locking part, a sound insulation felt 6, a mounting plate 7, a fixing block 8, a sound generator 9, a sound transmission tube 10, a partition 11, a guide rod 12, a spring 13 and a pressure plate 14. The sound insulation box 1 is used to provide a closed test environment to prevent external noise from interfering with the test results. The top of the sound insulation box 1 is hinged with a box cover 2, and the box cover 2 is used to open or close the test space. A locking part is provided on the front side of the box cover 2, and the end of the locking part is locked on the front side of the sound insulation box 1. Sound insulation felt 6 is glued to each end surface of the sound insulation box 1 and the box cover 2. 6 To further enhance the sound insulation effect, mounting plates 7 are provided on both sides of the bottom of the sound insulation box 1. Fixing blocks 8 are slidably provided on the mounting plates 7. The fixing blocks 8 can slide on the mounting plates to fix the sound generator 9 and the sound level meter 15 for easy position adjustment. The sound generator 9 is clamped on one side of the fixing block to generate the sound waves required for the test. There are two sound transmission tubes 10. A partition 11 is provided in the middle of the sound insulation box 1. The partition 11 is used to place the test sample and is kept in a stable position by a guide rod 12 and a spring 13. The partition 11 is provided on one side close to the sound generator 9. There is a sound transmission tube 10, and guide rods 12 are slidingly provided on both sides of the right side of the partition 11 to support the partition 11 and allow it to slide so as to place or remove the sample. A spring 13 is provided on the left end of the guide rod 12. The spring 13 applies a certain pressure to the pressure plate 14 to keep the test sample tight. A pressure plate 14 is movably placed in the middle of the partition 11 to fix the test sample so that it will not move during the test. The same side of the springs 13 on both sides is connected to the pressure plate 14. A pull ring is provided on the right side of the upper part of the partition 11. The pressure plate 14 is connected to the partition 11. 1, a certain distance is left between the placement gap, another sound transmission tube 10 is set on the right side of the pressure plate 14, the two sound transmission tubes 10 are used to guide the sound waves to pass through the test sample, one is close to the sound generator 9, and the other is close to the sound level meter 15. Through holes are opened in the middle of the partition 11 and the pressure plate 14 for the sound transmission tube 10 to pass through, ensuring that the sound waves can pass through the sample smoothly. The sound transmission tubes 10 on both sides are interconnected through the through holes. A sound level meter 15 is clamped on the other fixed block. The sound level meter 15 measures the intensity of the sound waves after passing through the sample and transmits the data to the controller 16.

[0024] like Figure 1-Figure 2 As shown, a handle 3 is also included. The handle 3 is hinged on the lower front part of the sound insulation box 1, and the handle 3 is used to facilitate moving or carrying the entire test device.

[0025] like Figure 1 and Figure 4 As shown, the locking part includes a buckle 4 and a torsion spring 5. Buckles 4 are hinged on both sides of the front side of the box cover 2. Slots for engaging with the buckles 4 are provided on both sides of the front side of the sound insulation box 1. Torsion springs 5 ​​are provided in the hinges between the buckle 4 and the box cover 2. The locking part is used to fix the position of the box cover 2 to ensure that the box cover 2 will not be accidentally opened during the test.

[0026] like Figure 2-Figure 3As shown, screws 81 are also included. Screws 81 are threaded through the inner sides of the fixing blocks 8 on both sides. The end of the left screw 81 contacts the outside of the sound generator 9, and the end of the right screw 81 contacts the outside of the sound level meter 15. The screws 81 are used to fix the positions of the sound generator 9 and the sound level meter 15 to ensure that these two key components are firmly installed on the fixing block 8, thereby ensuring that the measurement accuracy will not be affected by loosening during the test.

[0027] like Figure 1 and Figure 4 As shown, a controller 16 is also included. The controller 16 is provided on the top front side of the box cover 2. The sound generator 9 and the sound level meter 15 are electrically connected to the controller 16. The controller 16 and the sound level meter 15 are connected by wiring, and the wiring between the controller 16 and the sound level meter 15 can be plugged in and out. The wiring between the controller 16 and the sound level meter 15 is designed to be pluggable, which is convenient for maintenance or replacement when necessary. The controller 16 is the core control unit of the entire test device. It is responsible for controlling the start and stop of the sound generator 9, receiving data transmitted by the sound level meter, and processing this data for further analysis.

[0028] like Figure 1 combine Figure 4 As shown, a display screen 17 is also included. The display screen 17 is hinged on the front side of the top of the box cover 2. The display screen 17 is electrically connected to the controller 16. The display screen 17 is used to display the data collected by the controller 16 in real time, so that the operator can intuitively understand the test progress and record relevant test results.

[0029] When in use, first open the box cover 2, place the modified nylon strip sample to be tested between the partition 11 and the pressure plate 14, and use the guide rod 12 to adjust the position of the partition 11 so that the pressure plate 14 can press the nylon strip test sample tightly under the action of the spring 13; then, use the screw 81 to fix the position of the sound generator 9 and the sound level meter 15 to ensure that they are firmly installed on the fixed block 8, then close the box cover 2 and fix it to the soundproof box 1 through the locking part. During the test phase, turn on the power and start the sound generator 9 through the controller 16 to make it produce a sound of a preset frequency; The sound waves generated by the device 9 pass through the test sample through the sound transmission tube 10 on one side and reach the sound transmission tube 10 on the other side. The sound level meter 15 measures the intensity of the sound waves after passing through the sample and transmits the data to the controller 16; the controller 16 displays the data collected by the sound level meter 15 in real time through the display screen 17 and records the test results; finally, in the data analysis stage, the sound insulation performance index (such as transmission loss) is calculated according to the difference in sound wave intensity measured by the sound level meter 15 twice before and after, and the test data is analyzed to evaluate whether the sound insulation effect of the modified nylon strip meets the design requirements. The above completes the test.

[0030] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A new material modified nylon strip sound insulation performance testing device, comprising a sound insulation box (1) and a box cover (2) locking portion; the top of the sound insulation box (1) is hinged with the box cover (2), and its characteristics are: The soundproof box (1) further comprises a soundproof felt (6), a mounting plate (7), a fixing block (8), a sound generator (9), a sound transmission tube (10), a partition (11), a guide rod (12), a spring (13) and a pressure plate (14); a locking portion is provided on the front side of the box cover (2); the end of the locking portion is locked to the front side of the soundproof box (1); the soundproof box (1) and each end face inside the box cover (2) are glued with a soundproof felt (6); mounting plates (7) are provided on both sides of the bottom of the soundproof box (1); fixing blocks (8) are slidably provided on the mounting plates (7); a sound generator (9) is clamped on one side of the fixing block; there are two sound transmission tubes (10); a partition (11) is provided in the middle of the soundproof box (1); the partition (11) is close to the sound generator (9 ) is provided on one side of the partition (11), a guide rod (12) is slidably provided on both sides of the right side of the partition (11), a spring (13) is provided on the left end of the guide rod (12), a pressure plate (14) is movably placed in the middle of the partition (11), and the same side of the springs (13) on both sides is connected to the pressure plate (14), a pull ring is provided on the right side of the upper part of the partition (11), and a certain distance of placement gap is left between the pressure plate (14) and the partition (11), the other sound transmission tube (10) is provided on the right side of the pressure plate (14), the partition (11) and the pressure plate (14) are both provided with a through hole in the middle, and the sound transmission tubes (10) on both sides are connected through the through hole, and a sound level meter (15) is clamped on the other fixed block.

2. The new material modified nylon strip sound insulation performance testing device according to claim 1 is characterized by: It also includes a handle (3), and the handle (3) is hingedly connected to the lower front portion of the sound insulation box (1).

3. The new material modified nylon strip sound insulation performance testing device according to claim 2 is characterized by: The locking portion includes a buckle (4) and a torsion spring (5); the buckles (4) are hinged on both sides of the front side of the box cover (2); slots for engaging with the buckles (4) are provided on both sides of the front side of the sound insulation box (1); and torsion springs (5) are provided in the hinged joints between the buckle (4) and the box cover (2).

4. The new material modified nylon strip sound insulation performance testing device according to claim 3 is characterized by: The invention also includes a screw (81), and the inner sides of the fixing blocks (8) on both sides are threaded with screws (81), the end of the screw (81) on the left side contacts the outside of the sound generator (9), and the end of the screw (81) on the right side contacts the outside of the sound level meter (15).

5. The new material modified nylon strip sound insulation performance testing device according to claim 4 is characterized by: The box cover (2) further comprises a controller (16), which is provided on the top front side of the box cover (2), and the sound generator (9) and the sound level meter (15) are both electrically connected to the controller (16).

6. The new material modified nylon strip sound insulation performance testing device according to claim 5 is characterized by: The controller (16) and the sound level meter (15) are connected by wiring, and the wiring between the controller (16) and the sound level meter (15) can be plugged in and out.

7. The new material modified nylon strip sound insulation performance testing device according to claim 6 is characterized by: It also includes a display screen (17). The top front side of the box cover (2) is hinged with the display screen (17), and the display screen (17) is electrically connected to the controller (16).

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