A road noise reduction barrier

Abstract

The application discloses a road noise reduction guardrail, and belongs to the technical field of guardrails, which comprises a guardrail main body, a sound absorption layer, a reflection layer, a buckle mechanism and a clamping mechanism, the guardrail main body is a frame structure composed of H-shaped steel columns and cross beams, the bottom of the H-shaped steel column is fixed to the ground through foundation bolts, the cross beam comprises a main beam and a side beam, the sound absorption layer is a porous aluminum fiber plate and is fixed to the inner side of the guardrail main body through fixing bolts, the reflection layer is a perforated aluminum plate and is covered on the outer side of the sound absorption layer and connected with the guardrail main body through the buckle mechanism; the application is designed in combination of the sound absorption layer and the reflection layer, the low-frequency noise reduction effect is significantly improved, the modular structure is adopted, the installation and maintenance are convenient, the porous aluminum fiber plate has strong weather resistance, a long service life and a low comprehensive cost, the problems of poor low-frequency noise reduction effect, high cost, insufficient durability and difficult installation and maintenance of the existing road noise reduction guardrail are solved, and the practicality of the device is greatly improved.

Description

Technical Field

[0001] This application relates to the field of guardrail technology, and more particularly to a road noise reduction guardrail. Background Technology

[0002] With the acceleration of urbanization, traffic noise pollution has become increasingly serious, becoming one of the main factors affecting the quality of life of residents.

[0003] In existing technologies, road noise reduction barriers mainly adopt the following solutions: First, metal sound barriers, made of galvanized steel plates or aluminum alloy plates, reduce noise by reflecting sound waves, but have the problem of strong penetration of low-frequency noise; second, transparent acrylic sound barriers, which have both light transmission and noise reduction functions, but are expensive and prone to aging; third, porous sound-absorbing material barriers, such as glass wool or rock wool filled structures, have good sound absorption effects but poor waterproof performance and are prone to failure after long-term use; fourth, combined sound barriers, which combine reflective and sound-absorbing materials, but have complex structures and are difficult to install.

[0004] Therefore, metal sound barriers are ineffective at reducing low-frequency noise; transparent acrylic sound barriers are expensive and lack durability; porous sound-absorbing material railings are prone to moisture damage and failure; and modular sound barriers are difficult to install and maintain.

[0005] Therefore, this application proposes a road noise reduction guardrail. Utility Model Content

[0006] This application proposes a road noise reduction guardrail to solve the problems mentioned in the background art. Through the combined design of sound-absorbing and reflective layers, it significantly improves the low-frequency noise reduction effect. It adopts a modular structure, which is convenient for installation and maintenance. The porous aluminum fiberboard has strong weather resistance and long service life. The overall cost is lower than that of transparent acrylic sound barriers. It solves the problems of poor low-frequency noise reduction effect, high cost, insufficient durability and difficult installation and maintenance of existing road noise reduction guardrails, and greatly improves the practicality of the device.

[0007] To achieve the above objectives, this application adopts the following technical solution:

[0008] A road noise reduction guardrail includes a guardrail body, a sound-absorbing layer, a reflective layer, a buckle mechanism, and a snap-fit ​​mechanism. The guardrail body is a frame structure composed of H-shaped steel columns and crossbeams. The bottom of the H-shaped steel columns is fixed to the ground with anchor bolts. The crossbeams include main beams and side beams. The sound-absorbing layer is a porous aluminum fiberboard, which is fixed to the inside of the guardrail body with fixing bolts. The reflective layer is a perforated aluminum plate, which covers the outside of the sound-absorbing layer and is connected to the guardrail body through the buckle mechanism.

[0009] In a preferred embodiment, the latching mechanism includes a fixed plate, a rotating rod, a semi-circular movable plate, a connecting plate, a spring, a mounting plate, and a latching block;

[0010] By incorporating a snap-fit ​​mechanism and adopting a modular structure, the device is easy to install and maintain, thereby enhancing its practicality.

[0011] In a preferred embodiment, each of the fixed plates is fixedly connected to the inside of the crossbeam, and every two of the semi-circular movable plates are connected to the fixed plates via a rotating rod, with the semi-circular movable plates and the rotating rod being rotatably connected.

[0012] The two semi-circular movable plates are initially in a closed state. When the locking block on the perforated aluminum plate abuts against the semi-circular movable plates, the two semi-circular movable plates will rotate outward, thus opening the two semi-circular movable plates and improving the practicality of the device.

[0013] In a preferred embodiment, a connecting plate is fixedly connected to each of the semi-circular movable plates, and a spring is provided between each connecting plate and the fixed plate;

[0014] When the locking block is in the slot under the action of the spring, it will drive the connecting plate to reset, so that the semi-circular movable plate connected to it will clamp the locking block, thereby improving the practicality of the device.

[0015] In a preferred embodiment, each of the mounting plates is fixedly connected to the inner top of the reflective layer, and each of the mounting plates is fixedly connected to a locking block at the bottom, with each locking block locking in a slot between two semi-circular movable plates;

[0016] By rotating the two semi-circular movable plates outward, the two semi-circular movable plates are in an open state, and the locking block extends into the locking groove between the two semi-circular movable plates, thereby improving the practicality of the device.

[0017] In a preferred embodiment, the snap-fit ​​mechanism includes snap-fit ​​strips and grooves. The two snap-fit ​​strips are fixedly connected to the side of the side beam away from the main beam, and the two grooves are opened on both sides inside the reflective layer, with the two snap-fit ​​strips extending into the grooves.

[0018] By setting up a snap-fit ​​mechanism to fix both sides of the reflective layer, the connection between the reflective layer and the main body of the guardrail is strengthened, thereby improving the practicality of the device.

[0019] The beneficial effects of this application are:

[0020] 1. This road noise reduction guardrail, through the combination design of sound-absorbing layer and reflective layer, significantly improves the low-frequency noise reduction effect. It adopts a modular structure, which is convenient for installation and maintenance. The porous aluminum fiber board has strong weather resistance and long service life. The overall cost is lower than that of transparent acrylic sound barriers. It solves the problems of poor low-frequency noise reduction effect, high cost, insufficient durability and difficult installation and maintenance of existing road noise reduction guardrails, and greatly improves the practicality of the device.

[0021] 2. This type of road noise reduction guardrail, through the setting of a buckle mechanism, when installing the perforated aluminum plate, the two semi-circular movable plates are initially in a closed state. When the locking block on the perforated aluminum plate abuts against the semi-circular movable plate, the two semi-circular movable plates will rotate outward, so that the two semi-circular movable plates are in an open state. The locking block extends into the locking groove between the two semi-circular movable plates. When the locking block is in the locking groove, under the action of the spring, it will drive the connecting plate to reset, so that the semi-circular movable plate connected to it clamps the locking block. The perforated aluminum plate and the guardrail body are installed. The modular structure makes installation and maintenance convenient, greatly improving the practicality of the device. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the device in this application;

[0023] Figure 2 This is a schematic diagram of the sound-absorbing layer installation of the device in this application;

[0024] Figure 3 This is a schematic diagram of the latching mechanism of the device in this application;

[0025] Figure 4 For this application Figure 3 Enlarged view of point A in the middle;

[0026] Figure 5 This is a schematic diagram of the snap-fit ​​mechanism of the device in this application.

[0027] The diagram is labeled as follows: 1. Guardrail body; 11. H-beam post; 12. Horizontal beam; 121. Main beam; 122. Side beam; 2. Sound-absorbing layer; 21. Fixing bolt; 3. Reflective layer; 4. Buckling mechanism; 41. Fixing plate; 42. Rotating rod; 43. Semi-circular movable plate; 44. Connecting plate; 45. Spring; 46. Mounting plate; 47. Buckle block; 5. Snap-fit ​​mechanism; 51. Buckle strip; 52. Groove. Detailed Implementation

[0028] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0029] Reference Figure 1-5A road noise reduction guardrail includes a guardrail body 1, a sound-absorbing layer 2, a reflective layer 3, a buckle mechanism 4, and a snap-fit ​​mechanism 5. The guardrail body 1 is a frame structure composed of H-shaped steel columns 11 and crossbeams 12. The bottom of the H-shaped steel columns 11 is fixed to the ground by anchor bolts. The crossbeams 12 include a main beam 121 and a side beam 122. The sound-absorbing layer 2 is a porous aluminum fiberboard, which is fixed to the inner side of the guardrail body 1 by fixing bolts 21. The reflective layer 3 is a perforated aluminum plate, which covers the outer side of the sound-absorbing layer 2 and is connected to the guardrail body 1 by the buckle mechanism 4.

[0030] Reference Figure 3-4 The buckling mechanism 4 includes a fixed plate 41, a rotating rod 42, a semi-circular movable plate 43, a connecting plate 44, a spring 45, a mounting plate 46, and a locking block 47. By setting up the buckling mechanism 4 and adopting a modular structure, the installation and maintenance are convenient, thereby improving the practicality of the device.

[0031] Reference Figure 3-4 Each fixed plate 41 is fixedly connected to the inside of the crossbeam 12. Every two semi-circular movable plates 43 are connected to the fixed plate 41 through the rotating rod 42. The semi-circular movable plates 43 and the rotating rod 42 are rotatably connected. The two semi-circular movable plates 43 are initially in a closed state. When the locking block 47 on the perforated aluminum plate abuts against the semi-circular movable plates 43, the two semi-circular movable plates 43 will rotate outward, so that the two semi-circular movable plates 43 are in an open state, thereby improving the practicality of the device.

[0032] Reference Figure 3-4 Each semi-circular movable plate 43 is fixedly connected to a connecting plate 44, and a spring 45 is provided between each connecting plate 44 and the fixed plate 41. Under the action of the spring 45, when the locking block 47 is in the slot, it will drive the connecting plate 44 to reset, so that the semi-circular movable plate 43 connected to it will clamp the locking block 47, thereby improving the practicality of the device.

[0033] Reference Figure 3-4 Each mounting plate 46 is fixedly connected to the inner top of the reflective layer 3, and each mounting plate 46 is fixedly connected to a locking block 47 at its bottom. Each locking block 47 is locked in a slot between two semi-circular movable plates 43. By rotating the two semi-circular movable plates 43 outward, the two semi-circular movable plates 43 are in an open state, and the locking block 47 extends into the slot between the two semi-circular movable plates 43, thereby improving the practicality of the device.

[0034] Reference Figure 5The snap-fit ​​mechanism 5 includes snap-fit ​​strips 51 and grooves 52. Both snap-fit ​​strips 51 are fixedly connected to the side of the side beam 122 away from the main beam 121. Both grooves 52 are opened on both sides inside the reflective layer 3, and both snap-fit ​​strips 51 extend into the grooves 52. By setting the snap-fit ​​mechanism 5, the two sides of the reflective layer 3 are fixed, and the connection between the reflective layer 3 and the guardrail body 1 is strengthened, thereby improving the practicality of the device.

[0035] Working principle: Before installation, the installation position is measured and the anchor bolt hole positions are marked. Holes are drilled and anchor bolts are installed to fix the H-shaped steel column 11. Then, the crossbeam 12 is installed and welded to the H-shaped steel column 11. Next, the perforated aluminum fiber board is fixed to the inside of the guardrail with fixing bolts 21. Finally, the perforated aluminum plate is covered and locked with buckles. During use, noise waves pass through the perforated aluminum plate and enter the sound-absorbing layer 2. The perforated aluminum fiber board consumes sound energy through friction in the pores. The unabsorbed sound waves are reflected back to the sound-absorbing layer 2 by the reflective layer 3 for secondary absorption, thus achieving efficient noise reduction. Through the combined design of the sound-absorbing layer 2 and the reflective layer 3, the low-frequency noise reduction effect is significantly improved. The modular structure makes installation and maintenance convenient. The perforated aluminum fiber board has strong weather resistance and a long service life. The overall cost is lower than that of transparent acrylic sound barriers, solving the problems of poor low-frequency noise reduction effect, high cost, insufficient durability and difficult installation and maintenance of existing road noise reduction guardrails.

[0036] The above are merely preferred embodiments of this application, but the scope of protection of this application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and the inventive concept of this application, should be included within the scope of protection of this application.

Claims

1. A road noise reduction guardrail, comprising a guardrail body (1), a sound-absorbing layer (2), a reflective layer (3), a buckle mechanism (4), and a snap-fit ​​mechanism (5), characterized in that, The main body (1) of the guardrail is a frame structure composed of H-shaped steel columns (11) and crossbeams (12). The bottom of the H-shaped steel columns (11) is fixed to the ground by anchor bolts. The crossbeams (12) include main beams (121) and side beams (122). The sound-absorbing layer (2) is a porous aluminum fiberboard, which is fixed to the inside of the main body (1) by fixing bolts (21). The reflective layer (3) is a perforated aluminum plate, which covers the outside of the sound-absorbing layer (2) and is connected to the main body (1) by a buckle mechanism (4).

2. The road noise reduction guardrail according to claim 1, characterized in that, The buckling mechanism (4) includes a fixed plate (41), a rotating rod (42), a semi-circular movable plate (43), a connecting plate (44), a spring (45), a mounting plate (46), and a locking block (47).

3. The road noise reduction guardrail according to claim 2, characterized in that, Each of the fixed plates (41) is fixedly connected inside the crossbeam (12), and every two of the semi-circular movable plates (43) are connected to the fixed plates (41) through the rotating rod (42), and the semi-circular movable plates (43) and the rotating rod (42) are rotatably connected.

4. A road noise reduction guardrail according to claim 2, characterized in that, Each of the semi-circular movable plates (43) is fixedly connected to a connecting plate (44), and a spring (45) is provided between each connecting plate (44) and the fixed plate (41).

5. A road noise reduction guardrail according to claim 2, characterized in that, Each of the mounting plates (46) is fixedly connected to the inner top of the reflective layer (3), and each of the mounting plates (46) is fixedly connected to a locking block (47) at the bottom, and each locking block (47) is locked in a slot between two semi-circular movable plates (43).

6. A road noise reduction guardrail according to claim 1, characterized in that, The snap-fit ​​mechanism (5) includes a snap-fit ​​strip (51) and a groove (52). The two snap-fit ​​strips (51) are fixedly connected to the side of the side beam (122) away from the main beam (121). The two grooves (52) are opened on both sides inside the reflective layer (3), and the two snap-fit ​​strips (51) extend into the grooves (52).

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