Airflow buffering type sound absorbing panel sound barrier

Abstract

The utility model relates to a kind of airflow buffer type sound baffle sound barrier of sound absorption board, including sound absorption board body and the buffer assembly being set in the both sides of sound absorption board body, two described buffer assemblies are respectively set in the opposite side of two slot type columns;The buffer assembly includes inner gasket, frame clamping plate and positioning frame, the inner gasket is set as open frame structure, and is set in the side edge of sound absorption board body, the frame clamping plate is set in the outer periphery of inner gasket, and located inside positioning frame, the side plate of frame clamping plate is opposite side with the inner wall of slot type column Setting has compression spring piece;Multiple fasteners are screwed on the slot type column, and fastener is fixed and limited in the inside of slot type column with positioning frame.This utility model is by the buffer assembly and its cooperation structure of the both sides of sound absorption board body and the cooperation of slot type column, constitute independent buffer system, not only improve the long-term sound insulation and sound absorption performance of sound barrier, but also be convenient for and existing column adaptation replacement, can improve installation maintenance efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of sound barrier technology, specifically relating to an airflow buffer type sound insulation and sound absorption panel sound barrier. Background Technology

[0002] In existing traffic noise control projects, sound barriers, as crucial facilities for blocking the propagation of vehicle noise, directly impact noise reduction effectiveness due to their structural stability and acoustic performance. Currently, the commonly used sound barrier structures typically use rigid connections between the sound-absorbing panels and H-shaped steel columns. This design reveals significant aerodynamic flaws in actual operation: when a high-speed vehicle passes over the sound barrier, the outward-expanding turbulent airflow creates periodic impact loads on the barrier surface, especially noticeable in areas with heavy truck traffic. Due to the lack of an effective elastic buffering mechanism between the sound-absorbing panels and the columns, the rigid connection allows impact energy to be directly transferred to the entire barrier system, causing high-frequency vibrations in the sound-absorbing panel panels and the accompanying soundproof glass. This vibration not only generates secondary structural noise but also creates a mechanical coupling effect through the column connection nodes, subjecting the anchor bolts of the fixed columns to repeated shear stress and bending moment. Under long-term dynamic loads, the bolted connections gradually undergo plastic deformation, the preload gradually decreases, ultimately leading to serious consequences such as loose nuts and anchorage failure. As the stiffness of the column foundation nodes decreases, the overall structure of the sound barrier experiences lateral displacement, leading to the propagation of microcracks between the sound-absorbing material and the panel, significantly reducing the sound insulation coefficient (STL) and sound absorption coefficient (NRC) of the sound barrier. More seriously, the gaps created by structural loosening can form new sound radiation channels, amplifying traffic noise in specific frequency bands (typically 250–2000Hz), resulting in a "sound leakage" phenomenon. To address these issues, this invention proposes an airflow-buffered sound barrier with a sound-absorbing panel. Utility Model Content

[0003] The purpose of this invention is to provide an airflow buffer type sound insulation and sound absorption panel sound barrier that can solve the above-mentioned technical problems.

[0004] The specific technical solution adopted by this utility model is as follows: This utility model provides an airflow buffer type sound insulation and sound absorption panel sound barrier, including a sound absorption panel body and buffer components disposed on both sides of the sound absorption panel body. The two buffer components are respectively disposed on opposite sides of two channel-shaped columns. The buffer component includes an inner pad, a frame plate, and a positioning frame. The inner pad is configured as an open frame structure and is sleeved on one side edge of the sound absorption panel body. The frame plate is sleeved on the outer periphery of the inner pad and located inside the positioning frame. The side plate of the frame plate is provided with a compression spring on the side opposite to the inner wall of the channel-shaped column. The slotted column has multiple through-hole fasteners that are tapped, and the fasteners fix and restrict the positioning frame inside the slotted column.

[0005] Preferably, a transverse buffer block is provided on the opposite side of the frame plate and the positioning frame, and the transverse buffer block is fixedly installed on the side of the frame plate, and the cross-section of the transverse buffer block is a grid structure.

[0006] Preferably, the transverse buffer block is provided with symmetrically distributed inner arc plates on both sides, and the two inner arc plates are symmetrically fixedly installed on the two sides of the side of the frame plate.

[0007] Preferably, the compression spring abuts against the side of the inner folding baffle. The inner folding baffle is provided in two pieces and is respectively vertically fixed to the two side plates of the positioning frame, so that the frame plate can achieve the longitudinal elastic buffering function through the two compression springs. The arc-shaped recess of the compression spring is provided with a positioning bolt, and the positioning bolt is threadedly connected to the inner folding baffle.

[0008] Preferably, the lower edge of the positioning frame is bent to provide a base plate, the base plate has a movable hole, a limit screw is provided in the movable hole, and the limit screw is tapped and installed on one side of the surface of the sound-absorbing panel body.

[0009] Preferably, the two side plates of the frame plate are provided with outwardly extending shielding side plates extending vertically.

[0010] The beneficial effects are: 1. This utility model uses buffer components set on both sides of the sound-absorbing panel body in conjunction with the grooved column to form an independent buffer system, which can elastically buffer the longitudinal and lateral vibrations generated by the airflow impact, effectively reduce the rigid transmission of vibration to the grooved column, ensure that the grooved column maintains stable installation and fixing strength, thereby improving the long-term sound insulation and sound absorption performance of the sound barrier and extending its service life.

[0011] 2. This utility model, through its optimized design of the buffer component and its mating structure with the channel-shaped column, enables convenient adaptation and replacement with existing sound barrier columns, significantly improving installation and maintenance efficiency. The buffer component adopts a modular design; while retaining the original column structure, only the installation of the buffer component is required to achieve an overall performance upgrade, demonstrating outstanding engineering applicability. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a schematic diagram of the connection structure between the sound-absorbing panel body and the buffer assembly of this utility model; Figure 3 This is a schematic diagram of the explosion distribution structure of the sound-absorbing panel body and the buffer assembly of this utility model; Figure 4 This is a schematic diagram of the frame plate structure of this utility model; Figure 5 This is a schematic diagram of the positioning frame structure of this utility model.

[0013] The attached diagram lists the components represented by each number as follows: 1. Sound-absorbing panel body; 2. Buffer assembly; 3. Channel-shaped column; 4. Inner clamping pad; 5. Frame clamping plate; 51. Side shielding plate; 52. Inner insert arc plate; 53. Horizontal buffer block; 6. Compression spring; 7. Positioning frame; 71. Inner folding baffle; 72. Bolt; 73. Base plate; 73a. Movable hole; 8. Fastener. Detailed Implementation

[0014] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0015] like Figure 1-5 As shown, an airflow buffer type sound insulation and sound absorption panel sound barrier includes a sound absorption panel body 1 and buffer components 2 disposed on both sides of the sound absorption panel body 1. The two buffer components 2 are respectively disposed on opposite sides of two channel-shaped columns 3. The buffer component 2 includes an inner pad 4, a frame plate 5 and a positioning frame 7. The inner pad 4 is configured as an open frame structure and is fitted on one side edge of the sound absorption panel body 1. The frame plate 5 is fitted on the outer periphery of the inner pad 4 and is located inside the positioning frame 7. The side plate of the frame plate 5 is provided with a compression spring 6 on the opposite side of the inner wall of the channel-shaped column 3. The slotted column 3 has multiple through-hole fasteners 8, and the fasteners 8 fix and restrict the positioning frame 7 inside the slotted column 3. The fasteners 8 are dovetail self-tapping screws. The slotted column 3 adopts an H-shaped steel structure, and a mounting base is fixedly installed at its lower end.

[0016] As an optional implementation, a transverse buffer block 53 is provided on the opposite side of the frame plate 5 and the positioning frame 7, and the transverse buffer block 53 is fixedly installed on the side of the frame plate 5. The cross-section of the transverse buffer block 53 is a grid structure, and the material is PA66 engineering plastic. The transverse buffer block 53 forms a transverse buffer effect on the sound-absorbing panel body 1 on the opposite side of the channel column 3, effectively reducing the transverse cascading vibration effect on the sound-absorbing panel body 1 when longitudinal vibration occurs.

[0017] See attached document Figure 3 and attached Figure 4The transverse buffer block 53 has symmetrically distributed inner arc plates 52 on both sides. The two inner arc plates 52 are symmetrically fixed on the two sides of the frame plate 5. During the installation of the frame plate 5, the inner arc structure of the two inner arc plates 52 can be used to squeeze and insert the compression springs 6 on both sides, thereby significantly improving the convenience and efficiency of assembly.

[0018] See attached document Figure 2 and attached Figure 3 The spring sheet 6 abuts against the side of the inner folding baffle 71. The inner folding baffle 71 is set as two pieces and is respectively vertically fixed to the two side plates of the positioning frame 7. The inner folding baffle 71 forms a positioning and blocking structure for the spring sheet 6, thereby stably constraining the spring sheet 6 between the frame plate 5 and the inner wall of the groove column 3. The frame plate 5 achieves longitudinal elastic buffering function through the two spring sheets 6. The arc-shaped notch of the spring sheet 6 is provided with a positioning bolt 72, and the positioning bolt 72 is threadedly connected to the inner folding baffle 71. The spring sheet 6 adopts a long strip bent elastic steel sheet structure. During installation, the positioning bolt 72 is used to achieve preliminary positioning first, and then the guiding action of the inner arc plate 52 is used to complete the precise assembly of the frame plate 5 and the positioning frame 7.

[0019] See attached document Figure 5 The lower edge of the positioning frame 7 is bent to provide a bottom support plate 73. The bottom support plate 73 is used to support the bottom weight of the frame plate 5, the pressure spring 6 and the sound-absorbing panel body 1. The bottom support plate 73 has an elongated oval movable hole 73a. A limit screw is provided in the movable hole 73a and is tapped and installed on one side of the surface of the sound-absorbing panel body 1. Through the cooperation of the movable hole 73a and the limit screw, the sound-absorbing panel body 1 can make a small displacement within a limited range, and at the same time form a reliable anti-fall-off constraint structure.

[0020] Furthermore, the two side plates of the frame plate 5 are vertically extended with outward-expanding shielding side plates 51. The shielding side plates 51 form a full-coverage protection for the two side plates of the channel column 3, effectively avoiding collision damage with the corners of the column during installation, while enhancing the sealing and aesthetics of the overall structure.

[0021] With the above structure, when high-speed airflow impacts the sound-absorbing panel body 1, the longitudinal vibration energy is first absorbed by the elastic deformation of the compression spring 6. The compression spring 6 adopts a long, bent elastic steel sheet structure, and the positioning bolt 72 at its arc-shaped notch allows elastic displacement within a limited range. At the same time, the grid-like PA66 engineering plastic structure of the transverse buffer block 53 consumes transverse vibration energy through its own deformation. The movable hole 73a at the bottom of the positioning frame 7 cooperates with the limiting screw to form a sliding pair, allowing the sound-absorbing panel body 1 to move freely within a certain range. The combined structure of the inner pad 4 and the frame plate 5 forms a floating support, dissipating the remaining vibration energy through the layered dissipation of the buffer assembly 2. This multi-stage buffer system can effectively absorb more than 90% of the vibration energy before it reaches the grooved column 3, ensuring that the column connection structure is not affected by periodic loads, effectively reducing the amplitude of the sound barrier under airflow impact, and improving its service life.

[0022] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. All standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part all adopt conventional methods such as bolts, rivets, and welding, which are mature technologies in the prior art. The machinery, parts, and equipment all adopt conventional models in the prior art. This application is mainly used to protect mechanical devices. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, are implemented according to conventional methods in the field.

Claims

1. A sound barrier with airflow buffer type sound insulation and sound absorption panels, characterized in that: The system includes a sound-absorbing panel body (1) and buffer components (2) disposed on both sides of the sound-absorbing panel body (1). The two buffer components (2) are respectively disposed on opposite sides of two groove-shaped columns (3). The buffer components (2) include an inner pad (4), a frame plate (5) and a positioning frame (7). The inner pad (4) is configured as an open frame structure and is fitted on one side edge of the sound-absorbing panel body (1). The frame plate (5) is fitted on the outer periphery of the inner pad (4) and is located inside the positioning frame (7). The side plate of the frame plate (5) is provided with a pressure spring (6) on the opposite side of the inner wall of the groove-shaped column (3). The grooved column (3) has multiple through fasteners (8) that are tapped, and the fasteners (8) fix and restrict the positioning frame (7) inside the grooved column (3).

2. The airflow buffer type sound insulation and sound absorption panel sound barrier according to claim 1, characterized in that: A transverse buffer block (53) is provided on the opposite side of the frame plate (5) and the positioning frame (7), and the transverse buffer block (53) is fixedly installed on the side of the frame plate (5). The cross-section of the transverse buffer block (53) is a grid structure.

3. The airflow buffer type sound insulation and sound absorption panel sound barrier according to claim 2, characterized in that: The transverse buffer block (53) has symmetrically distributed inner arc plates (52) on both sides, and the two inner arc plates (52) are symmetrically fixedly installed on the two sides of the frame plate (5).

4. The airflow buffer type sound insulation and sound absorption panel sound barrier according to claim 3, characterized in that: The compression spring (6) abuts against the side of the inner folding baffle (71). The inner folding baffle (71) is set in two pieces and is respectively fixed vertically on the two side plates of the positioning frame (7), so that the frame plate (5) can realize the longitudinal elastic buffer function through the two compression springs (6). The arc-shaped notch of the compression spring (6) is provided with a positioning bolt (72), and the positioning bolt (72) is threadedly connected to the inner folding baffle (71).

5. The airflow buffer type sound insulation and sound absorption panel sound barrier according to claim 4, characterized in that: The lower edge of the positioning frame (7) is bent to provide a base plate (73). The base plate (73) has an active hole (73a). A limit screw is provided in the active hole (73a), and the limit screw is tapped and installed on one side of the surface of the sound-absorbing plate body (1).

6. The airflow buffer type sound insulation and sound absorption panel sound barrier according to claim 5, characterized in that: The two side plates of the frame plate (5) are vertically extended with outward-expanding shielding side plates (51).

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