Transparent variable combination narrow-band silencer

Abstract

The utility model relates to acoustics engineering and noise control field discloses a kind of transparent variable combination narrow-frequency sound-absorbing device, including bottom plate, the bottom plate front and rear side is provided with side plate two, the bottom plate left and right sides are provided with side plate one, the bottom plate front and rear ends are fixedly connected with horizontal plate one, two The horizontal plate one between is fixedly connected with horizontal plate two, two The horizontal plate two ends are provided with locking assembly, the locking assembly includes frame, the frame is fixedly connected in side plate one inner side, the frame bottom is fixedly connected with support plate, the support plate inside is equipped with sliding slot, the frame inside is slidably connected with cylinder. In the utility model, bottom plate and side plate are made of transparent acrylic high-molecular sound-absorbing material, which not only meets the requirement of line-of-sight penetration, but also has basic sound-absorbing capacity. The design of large circle middle cavity and small circle special round hole of core sound insulation board can dissipate energy and weaken specific narrow-frequency noise.

Description

Technical Field

[0001] This utility model relates to the field of acoustic engineering and noise control, and in particular to a transparent variable combined narrowband noise reduction device. Background Technology

[0002] The transparent variable combination narrow frequency silencing device has visual transparency, which can flexibly adjust the narrow frequency range and silencing amount of silencing through the variable adjustment structure without obstructing the line of sight. It also supports the combination of multiple units to adapt to different space requirements. It can achieve efficient noise reduction for specific narrow frequency noise, such as specific frequency noise of industrial equipment operation, narrow frequency vibration noise of rail transit wheel-rail coupling, and specific frequency interference noise of precision instruments in the laboratory.

[0003] Existing noise reduction technologies are mostly designed for broadband noise, with insufficient processing capabilities for specific narrow frequency band noise. Some devices even require sacrificing transparency to achieve noise reduction, making it difficult to balance visual transparency and noise reduction requirements. Furthermore, single structures have weak adaptability to different noise environments, and the noise reduction effect is easily limited by the scene. In addition, existing devices are often integrated fixed structures, which do not support flexible combination of multiple units. When adapting to different spaces, the entire device needs to be replaced. Installation often relies on professional tools and complex procedures. Therefore, a transparent, variable, combined narrow frequency noise reduction device is proposed to solve the above problems. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a transparent variable combined narrowband noise reduction device, which aims to improve the problems of poor noise reduction and inconvenient disassembly and assembly in the existing technology.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a transparent variable combined narrow-frequency noise reduction device, comprising a base plate, side plates two are provided on the front and rear sides of the base plate, side plates one are provided on the left and right sides of the base plate, a horizontal plate one is fixedly connected to both ends of the base plate, a horizontal plate two is fixedly connected between the two horizontal plates one, a locking component is provided at both ends of the two horizontal plates two, the locking component includes a frame, the frame is fixedly connected to the inner side of the side plate one, a support plate is fixedly connected to the bottom of the frame, a groove is provided inside the support plate, a cylinder is slidably connected inside the frame, a limit post is fixedly connected inside the cylinder, a limit plate is fixedly connected to the middle of the frame, a spring is sleeved on the cylinder, the spring is fixedly connected to the outer side of the limit post, insertion holes are fixedly connected to both ends of the two horizontal plates one, the cylinder is inserted into the insertion holes, a sound insulation plate is fixedly connected to the outer side of one of the side plates two, and a circular hole is provided inside the sound insulation plate.

[0006] As a further description of the above technical solution: the locking components are disposed at both ends of the top of the two horizontal plates, and the insertion holes are fixedly connected to the inner ends of the two horizontal plates.

[0007] As a further description of the above technical solution: four of the frames are fixedly connected to the outside of two side plates, and a top plate is fixedly connected to the top of the two side plates.

[0008] As a further description of the above technical solution: the limiting post passes through one end of the cylinder.

[0009] As a further description of the above technical solution: the cylinder runs through the top of the frame.

[0010] As a further description of the above technical solution: a disk is fixedly connected to one end of the cylinder.

[0011] As a further description of the above technical solution: the spring is disposed inside the frame.

[0012] As a further description of the above technical solution: the limiting post is located at the bottom end of the frame.

[0013] This utility model has the following beneficial effects:

[0014] 1. In this utility model, the base plate and side plates are made of transparent acrylic polymer sound-absorbing material, which not only meets the requirements of visual transparency, but also has basic sound absorption capabilities. The core sound insulation plate has a large circular cavity in the middle and a small circular hole design, which dissipates energy and weakens specific narrow-frequency noise without interfering with other frequency sound waves. It has a high noise reduction degree and solves the problem that the existing technology has poor targeting of broadband noise reduction or requires the sacrifice of transparency.

[0015] 2. In this utility model, during assembly, the side plate and the horizontal plate can be automatically locked by the cooperation of the spring and the cylinder, without the need for complicated tools. During disassembly, the cylinder can be removed by simply pulling the disc to overcome the spring force. Attached Figure Description

[0016] Figure 1 This is a first-view perspective three-dimensional schematic diagram of a transparent variable combined narrowband noise reduction device proposed in this utility model.

[0017] Figure 2 This is a second-view perspective three-dimensional schematic diagram of a transparent variable combined narrowband noise reduction device proposed in this utility model.

[0018] Figure 3 This is a schematic diagram of the structure of the base plate of a transparent variable combined narrowband noise reduction device proposed in this utility model;

[0019] Figure 4 This is a schematic diagram of the spring in a transparent, variable, combined narrow-frequency noise reduction device proposed in this utility model.

[0020] Legend:

[0021] 1. Base plate; 2. Side plate 1; 3. Sound insulation board; 4. Top plate; 5. Side plate 2; 6. Horizontal plate 1; 7. Horizontal plate 2; 8. Frame; 9. Limiting post; 10. Support plate; 11. Slide groove; 12. Limiting plate; 13. Disc; 14. Cylinder; 15. Spring; 16. Insertion hole; 17. Round hole. Detailed Implementation

[0022] 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.

[0023] Reference Figures 1-4This utility model provides an embodiment of a transparent, variable, combined narrowband noise reduction device, comprising a base plate 1, side plates 5 arranged on the front and rear sides of the base plate 1, and side plates 2 arranged on the left and right sides of the base plate 1. The base plate 1, side plates 2, and side plates 5 are made of transparent acrylic polymer sound-absorbing material, which satisfies the requirement of visual transparency while also possessing basic sound absorption capabilities, providing structural support for the device to balance transparency and initial noise reduction. Horizontal plates 6 are fixedly connected to both the front and rear ends of the base plate 1, and horizontal plates 7 are fixedly connected between the two horizontal plates 6. The horizontal plates 6 and 7 serve as the horizontal crossbars of the device. The connecting structure allows for quick docking with side plate 1 (2) and side plate 2 (5) via locking components, facilitating flexible assembly of the device. Locking components are provided at both ends of the two side plates 2 (7). Each locking component includes a frame 8, which is fixedly connected to the inside of side plate 1 (2), providing a stable mounting base for the core components of the locking component: cylinder 14 and spring 15. A support plate 10 is fixedly connected to the bottom of the frame 8. The support plate 10 has an internal groove 11. The support plate 10 and the internal groove 11 restrict the sliding trajectory of the cylinder 14, preventing it from sliding off course and failing to insert into the socket 16. A cylinder 14 is connected, and a limiting post 9 is fixedly connected inside the cylinder 14. The cylinder 14 can slide along the frame 8. The limiting post 9 can limit the deformation direction of the spring 15, preventing the spring 15 from shifting and failing, and providing power for the automatic locking of the device. A limiting plate 12 is fixedly connected in the middle of the frame 8 to facilitate the locking of the limiting post 9. The cylinder 14 is fitted with a spring 15, which is fixedly connected to the outside of the limiting post 9. The spring 15 is fitted on the cylinder 14 and fixed to the outside of the limiting post 9. In its natural state, the cylinder 14 can be pushed to automatically insert into the insertion hole 16 to achieve locking. Disassembly only requires overcoming the spring force. Pull the cylinder 14 out. The two horizontal plates 6 have fixed holes 16 at both ends. The cylinder 14 is inserted into the hole 16. The insertion and connection of the hole 16 and the cylinder 14 can quickly achieve a stable connection between the side plate and the horizontal plate. One of the side plates 5 has a sound insulation board 3 fixedly connected to its outer side. The sound insulation board 3 has a round hole 17 inside. The sound insulation board 3 is the core noise reduction component. Its round hole 17 adopts an acoustic design with a large circle at one end and a small circle at the other end, and a cavity in the middle. It can specifically weaken specific narrow frequency noise through resonance absorption and energy dissipation without interfering with other frequency bands of sound waves, thereby improving noise reduction.

[0024] Reference Figure 3 and Figure 4 The locking components are located at both ends of the top of the two horizontal plates 7, and the insertion holes 16 are fixedly connected to the inner ends of the two horizontal plates 7. The locking components and the insertion holes 16 are symmetrically distributed at both ends of the top of the horizontal plates 7, which enhances the overall connection strength of the device.

[0025] Reference Figure 1 and Figure 2The four frames 8 are fixedly connected to the outside of the two side plates 2. The top plate 4 is fixedly connected to the top of the two side plates 2. The four frames 8 on the outside of the side plates 2 facilitate the splicing and combination of multiple devices to adapt to different scene requirements. The top plate 4 can be made of transparent acrylic material to further ensure the top of the device is transparent, while improving the device's sealing and enhancing the noise reduction effect.

[0026] Reference Figure 4 The limiting post 9 passes through one end of the cylinder 14, which can more stably constrain the installation position and deformation direction of the spring 15, ensure that the spring 15 exerts a uniform pushing force on the cylinder 14, avoid the cylinder 14 from sliding and jamming due to uneven force, and ensure smooth locking and unlocking operations.

[0027] Reference Figure 3 and Figure 4 The cylinder 14 passes through the top of the frame 8, which exposes the disc 13 outside the device. This allows the operator to directly pull the disc 13 to unlock the device without having to apply force inside, thus improving the ease of operation.

[0028] Reference Figure 3 and Figure 4 One end of the cylinder 14 is fixedly connected to a disc 13. The disc 13 increases the force application area of ​​the cylinder 14, preventing the operator's hand from slipping when pulling the cylinder 14, and improving the convenience and accuracy of the disassembly operation.

[0029] Reference Figures 1-3 The spring 15 is located inside the frame 8 to prevent external dust and extend the service life of the locking assembly.

[0030] Reference Figures 1-3 The limiting post 9 is located at the bottom of the frame 8, which allows the spring 15 to maintain a reasonable stretching and compression space within the frame 8.

[0031] Working principle: The base plate 1, side plate 1, side plate 2, and top plate 4 are made of transparent acrylic, a high-polymer sound-absorbing material, to meet the transparency requirements. The sound insulation plate 3 fixed on the outside of the side plate 2 5 is the core noise reduction component. The circular holes 17 inside are acoustically designed. The hole diameter, spacing, and arrangement are designed for specific narrow-frequency noise, such as specific frequency noise from industrial equipment and rail transit. When the noise of this frequency comes into contact with the sound insulation plate 3, the diameter of the circular holes 17 is a large circle at one end and a small circle at the other end. It can absorb and dissipate energy through sound wave resonance. The hollow part in the middle weakens the target narrow-frequency noise, while not affecting other frequency sound waves.

[0032] During assembly, the first horizontal plate 6, the second horizontal plate 7, and the first side plate 2 are aligned. The frame 8 is fixed to the first side plate 2 and the second side plate 5. The spring 15 is fixedly connected to the outside of the limiting post 9. The limiting post 9 restricts the sliding direction of the spring and 15. In the natural state, one end of the cylinder 14 is inserted into the insertion hole 16 of the first horizontal plate 6 and the second horizontal plate 7 to achieve automatic locking between the side plate and the horizontal plate. When disassembling or adjusting, pull the disc 13 at one end of the cylinder 14. The external force overcomes the elasticity of the spring 15 and pushes the cylinder 14 out of the insertion hole 16. Rotating the disc 13 will lock the limiting post 9 onto the limiting plate 12, thereby unlocking the parts and enabling disassembly.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A transparent, variable-type combined narrow-frequency silencing device, comprising a base plate (1), characterized in that: The base plate (1) is provided with side plates two (5) on the front and back sides, and side plates one (2) are provided on the left and right sides of the base plate (1). A horizontal plate one (6) is fixedly connected to both the front and back ends of the base plate (1). A horizontal plate two (7) is fixedly connected between the two horizontal plates one (6). Locking components are provided at both ends of the two horizontal plates two (7). The locking components include a frame (8). The frame (8) is fixedly connected to the inside of the side plate one (2). A support plate (10) is fixedly connected to the bottom of the frame (8). A sliding groove (11) is provided inside the support plate (10). A cylinder (14) is slidably connected inside the frame (8). A limiting post (9) is fixedly connected inside the cylinder (14). A limiting plate (12) is fixedly connected in the middle of the frame (8). A spring (15) is sleeved on the cylinder (14). The spring (15) is fixedly connected to the outside of the limiting post (9). Insert holes (16) are fixedly connected at both ends inside the two horizontal plates (6). The cylinder (14) is inserted into the insert holes (16). A sound insulation plate (3) is fixedly connected to the outside of one of the side plates (5). A round hole (17) is opened inside the sound insulation plate (3).

2. The transparent variable combined narrowband noise reduction device according to claim 1, characterized in that: The locking components are located at both ends of the top of the two horizontal plates (7), and the jacks (16) are fixedly connected to the inner ends of the two horizontal plates (7).

3. The transparent variable combined narrowband noise reduction device according to claim 1, characterized in that: Four of the frames (8) are fixedly connected to the outside of the two side plates (2), and the top of the two side plates (2) is fixedly connected to the top plate (4).

4. The transparent variable combined narrowband noise reduction device according to claim 1, characterized in that: The limiting post (9) passes through one end of the cylinder (14).

5. A transparent variable combined narrowband noise reduction device according to claim 1, characterized in that: The cylinder (14) runs through the top of the frame (8).

6. The transparent variable combined narrowband noise reduction device according to claim 1, characterized in that: A disc (13) is fixedly connected to one end of the cylinder (14).

7. A transparent variable combined narrowband noise reduction device according to claim 1, characterized in that: The spring (15) is disposed inside the frame (8).

8. A transparent variable combined narrowband noise reduction device according to claim 1, characterized in that: The limiting post (9) is located at the bottom end of the frame (8).

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