Metal sound barrier unit plate for rail transit

Abstract

The utility model discloses a metal sound barrier unit plate for rail transit, which is mounted on guardrails on two sides of a road and comprises a mounting seat, a fixing frame and a sound barrier plate, the mounting seat is fixed on the outer sides of the guardrails, and a dovetail groove is formed in the top surface of the mounting seat; a dovetail joint which can be clamped in the dovetail groove in a sliding manner is fixed at the bottom end of the fixed frame; a slot is formed in one side of the fixed frame, and an insertion block matched with the slot is fixed on the other side of the fixed frame; a plurality of ventilation holes are formed in the two sides of the fixing frame; the sound screen plate is embedded and fixed in the fixing frame to absorb sound. According to the sound barrier, an assembly type structure is adopted, the sound barrier plates and the mounting seats are mutually clamped through the fixing frames, and every two adjacent unit plates are connected in an inserted mode, so that the sound barrier is more convenient to assemble and disassemble; meanwhile, pulsating pressure is eliminated through the ventilation holes, and the structural strength and the service life of the sound barrier are guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of rail transit noise control technology, and more specifically to a metal sound barrier unit panel for rail transit. Background Technology

[0002] With the rapid development of highways, railways, urban light rail, and subways, while bringing convenience to people's travel, noise pollution generated by train operation has also become a new problem. To reduce train noise pollution, builders have installed sound barriers on the guardrails on both sides of rail transit lines.

[0003] A sound barrier is a sound-blocking structure with sufficient surface density located between a sound source and a receiver. By constructing a finite-length sound barrier in local areas on both sides of the sound source, the operating noise of the sound source can be significantly attenuated during propagation, thereby reducing the noise impact in a certain area where the receiver is located and improving the sound environment quality of the surrounding environment.

[0004] Currently, sound barriers are typically installed using a combination of columns and unit panels. First, the H-beam steel columns are fixed to the top of the barrier. The position, height, verticality, and spacing of the columns need to be adjusted and secured with nuts to ensure verticality. After the columns are installed, a crane or scaffolding is used to lift the sound barrier panels, which are then slowly lowered until both ends are inserted into the grooves of the two H-beam steel columns and adjusted to the appropriate height. Then, the auxiliary safety harnesses are removed, the panel height is adjusted, and spring clips are used to secure the panel, ensuring a tight fit between the panel and the columns.

[0005] Using the above method, the installation efficiency of the sound barrier unit panels is not high, and it requires a lot of cost and manpower, resulting in a waste of resources. At the same time, when the verticality of the H-shaped steel columns is deviated, the sound barrier unit panels may not be able to be installed or may deform, resulting in quality accidents. Furthermore, when the gap between the vehicle body and the sound barrier panel is small, the air in between is compressed rapidly without sufficient pressure release time, forming a local high-pressure airflow that is applied to the sound barrier, i.e., pulsating pressure, which will reduce the structural strength and service life of the sound barrier unit panels.

[0006] Therefore, how to provide a prefabricated metal sound barrier unit panel that is easy, quick, and efficient to install without the need for column support, thereby improving construction efficiency and eliminating the pulsating pressure generated by vehicles, is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0007] In view of this, the present invention provides a metal sound barrier unit panel for rail transit, which aims to solve the above-mentioned technical problems.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A metal sound barrier unit panel for rail transit, installed on guardrails on both sides of the road, includes:

[0010] Mounting base, the mounting base is fixed to the outer side of the guardrail opposite the road, and the top surface of the mounting base is provided with a dovetail groove;

[0011] A fixed frame is provided, with a dovetail tenon that can be slidably engaged in the dovetail groove at its bottom end; a slot is provided on one side of the fixed frame, and an insert block that matches the slot is fixed on the other side; multiple ventilation holes are provided on both sides of the fixed frame.

[0012] A sound shield is fitted and fixed within the fixed frame to absorb sound.

[0013] The beneficial effects of the above technical solution are that the sound barrier can be fixed to the back of the guardrail using the mounting base during installation, and then the overall structure of the fixing frame and the sound barrier panel can be slidably snapped into the dovetail groove, making installation convenient and quick, eliminating the auxiliary support of the steel column, and reducing construction costs; when the gap between the vehicle body and the sound barrier panel is small, the air in between is rapidly compressed and can be released through the ventilation holes, eliminating the pulsating pressure generated by vehicle operation and improving the service life of the sound barrier.

[0014] Preferably, the sound shield includes a symmetrically arranged front panel and a back panel, with sound-absorbing rock wool filling the space between the two opposing surfaces of the front and back panels. The front panel faces the road and is a louvered panel. Noise generated by train operation can be absorbed by the sound-absorbing rock wool within the inner cavity of the louvered sound shield, thereby reducing the noise impact.

[0015] Preferably, the top of the guardrail has a pre-embedded hole, and the mounting base has an anchor bolt hole corresponding to and communicating with the pre-embedded hole. The threaded end of the anchor bolt passes through the pre-embedded hole and the anchor bolt hole in sequence, and the mounting base is fastened to the back of the guardrail with a high-strength nut. The mounting base and the guardrail are fastened together by the anchor bolt, which is efficient and quick to install. Moreover, the installation of the mounting base can be carried out by the workers standing on the road. During high-altitude operations, it can effectively avoid the occurrence of falls from height accidents and improve the safety factor.

[0016] Preferably, the top of the sound barrier panel has an arc-shaped surface facing the road. A photovoltaic panel is fixed to the top surface of the sound barrier panel away from the guardrail, and a street lamp electrically connected to the photovoltaic panel is fixed to the other top surface. By utilizing the photovoltaic panel for solar photovoltaic power generation, the street lamp for nighttime illumination, and the sound barrier replacing the street lamp for nighttime lighting, the function of the sound barrier becomes more diversified.

[0017] Preferably, the mounting base, fixing frame, and sound shield are all made of aluminum alloy, and the fixing frame and the sound shield are integrally pressed together. Aluminum alloy profiles are lightweight, meeting the requirements for weight reduction and making installation easier.

[0018] Preferably, there are multiple fixing frames, and the opposite sides of two adjacent fixing frames are interlocked and fastened together. After the mounting base is fixed, the fixing frames can slide and snap into the dovetail grooves. At the same time, two adjacent fixing frames can be interlocked with each other through inserts and slots. The assembly method makes the installation of the sound barrier more efficient and faster.

[0019] Preferably, the ventilation holes on the slot walls on both sides of the slots of two adjacent fixing frames are correspondingly connected to the ventilation holes on the insert block. The ventilation holes are located on both sides of the fixing frames, and even after two adjacent fixing frames are inserted, the ventilation holes remain correspondingly connected, ensuring the ventilation holes effectively eliminate pulsating pressure.

[0020] Preferably, the tops of two adjacent fixing frames are fastened with fastening bolts. After the two adjacent fixing frames are inserted, they are then fastened with fastening bolts to ensure the overall stability of the sound barrier installation.

[0021] Preferably, the sound barrier panel is at least 3.5m high and at least 1.5m wide. This ensures the sound absorption and noise reduction effect of the sound barrier while facilitating its installation.

[0022] As can be seen from the above technical solution, compared with the prior art, this utility model discloses a metal sound barrier unit panel for rail transit, which adopts an assembled structure. The sound barrier panel and the mounting base are interlocked by a fixed frame, and adjacent unit panels are connected by plug-in connection, making the installation and dismantling of the sound barrier more convenient. At the same time, ventilation holes are used to eliminate pulsating pressure, ensuring the structural strength and service life of the sound barrier. Moreover, the sound barrier can replace street lights for lighting, with diversified functions and reduced construction costs. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0024] Figure 1 A schematic diagram of the sound barrier unit panel structure provided by this utility model;

[0025] Figure 2 This is a cross-sectional view of the sound barrier unit panel provided by this utility model;

[0026] Figure 3 A front view of the sound barrier installation provided by this utility model;

[0027] Figure 4 for Figure 2 Enlarged diagram of part A in the diagram;

[0028] Figure 5 This is a rear view of the sound barrier provided by this utility model after installation.

[0029] in,

[0030] 1-Guardrail; 2-Mounting base; 21-Anchor bolt hole; 3-Fixing frame; 31-Slot; 32-Insertion block; 33-Ventilation hole; 34-Dovetail tenon; 4-Sound shield panel; 41-Face panel; 42-Back panel; 43-Sound absorbing rock wool; 5-Photovoltaic panel; 6-Street lamp; 7-Anchor bolt; 8-Fastening bolt. Detailed Implementation

[0031] 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.

[0032] See appendix Figures 1-5 This utility model discloses a metal sound barrier unit panel for rail transit, installed on guardrails 1 on both sides of the road, comprising:

[0033] Mounting base 2 is fixed on the outer side of guardrail 1 opposite to the road, and a dovetail groove is provided on the top surface of mounting base 2;

[0034] The fixed frame 3 has a dovetail tenon 34 that can be slidably engaged in the dovetail groove at its bottom end; a slot 31 is provided on one side of the fixed frame 3, and an insert block 32 that matches the slot 31 is fixed on the other side; multiple ventilation holes 33 are provided on both sides of the fixed frame 3.

[0035] Sound shield 4 is fitted and fixed within the fixed frame 3 for sound absorption.

[0036] In this embodiment, when the gap between the vehicle body and the sound barrier panel is small, the air in between is rapidly compressed and can be released through the ventilation holes to ensure sufficient pressure release time, eliminate local high-pressure airflow, and ensure the structural strength and service life of the sound barrier unit panel.

[0037] To further optimize the above technical solution and ensure the sound absorption effect of the sound barrier unit panel, the sound barrier panel 4 includes a symmetrically arranged front panel 41 and back panel 42. The two opposite panels of the front panel 41 and back panel 42 are filled with sound-absorbing rock wool 43. The front panel 41 faces the road direction and is a louvered panel.

[0038] To further optimize the above technical solution and improve the construction efficiency of the mounting base, the top of the guardrail 1 is provided with a pre-embedded hole, and the mounting base 2 is provided with an anchor bolt hole 21 that corresponds to and communicates with the pre-embedded hole. The threaded end of the anchor bolt 7 passes through the pre-embedded hole and the anchor bolt hole 21 in sequence, and the mounting base 2 is fastened to the back of the guardrail 1 by a high-strength nut.

[0039] In some other specific embodiments, the top of the sound shield 4 is formed with an arc-shaped surface facing the road direction, a photovoltaic panel 5 is fixed on the top surface of the sound shield 4 away from the guardrail 1, and a street lamp 6 electrically connected to the photovoltaic panel 5 is fixed on the other top surface.

[0040] like Figure 3 , 4 As shown in Figure 5, after the sound barrier is installed, photovoltaic panels and streetlights are installed at intervals of several sound barrier unit panels. The sound barrier replaces the original streetlight structure for nighttime lighting, making its function more diversified, and eliminating the original streetlight installation reduces construction costs.

[0041] To further optimize the above technical solution, the spacing between two adjacent photovoltaic panels after the sound barrier is installed is 50-80m.

[0042] In this embodiment, the mounting base 2, the fixing frame 3, and the sound barrier panel 4 are all made of aluminum alloy, with the fixing frame 3 and the sound barrier panel 4 integrally pressed together. Aluminum alloy is a lightweight material, making it easier to install and remove the sound barrier.

[0043] To further optimize the above technical solution, the number of fixed frames 3 is multiple, and the opposite sides of two adjacent fixed frames 3 are interlocked and fastened together.

[0044] During the installation of the sound barrier, the mounting base and the guardrail are first fastened with anchor bolts. To ensure the fixing effect of the mounting base, there should be no less than two anchor bolts. Then, the overall structure of the fixing frame and the sound barrier panel is slid into the dovetail groove through the dovetail tenon. The sockets between two adjacent sound barrier panel units are inserted into the slots for connection and fixing.

[0045] To further optimize the above technical solution and ensure the effect of the sound barrier in eliminating pulsating pressure, the ventilation holes 33 on both sides of the slot 31 of the two adjacent fixed frames 3 are connected to the ventilation holes 33 on the insert block 32.

[0046] To further optimize the above technical solution and ensure the fixing effect between two adjacent sound barrier unit panels, the tops of two adjacent fixing frames 3 are fastened with fastening bolts 8.

[0047] like Figure 4 The slot top has corresponding and connected bolt holes on both sides of the slot wall and the insert block. The fastening bolts pass through the bolt holes and bolt the two fixing frames together by the pitch. The bottom of the fixing frames is snapped in a dovetail shape, which ensures the stability of the sound barrier installation.

[0048] To further optimize the above technical solution, the height of the sound shield 4 shall not be less than 3.5m and the width shall not be greater than 1.5m.

[0049] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0050] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A metal sound barrier unit panel for rail transit, installed on guardrails (1) on both sides of the road, characterized in that, include: Mounting base (2), which is fixed to the outside of the guardrail (1) relative to the road, and the top surface of the mounting base (2) is provided with a dovetail groove; A fixed frame (3) is provided, and a dovetail tenon (34) that can be slidably engaged in the dovetail groove is fixed at the bottom end of the fixed frame (3); a slot (31) is provided on one side of the fixed frame (3), and an insert (32) that is adapted to the slot (31) is fixed on the other side; a plurality of ventilation holes (33) are provided on both sides of the fixed frame (3). Sound shield (4) is fitted and fixed in the fixed frame (3) for sound absorption.

2. A metal sound barrier unit panel for rail transit according to claim 1, characterized in that, The sound barrier panel (4) includes a symmetrically arranged front panel (41) and back panel (42). The two opposite surfaces of the front panel (41) and the back panel (42) are filled with sound-absorbing rock wool (43). The front panel (41) faces the road and is a louvered panel.

3. A metal sound barrier unit panel for rail transit according to claim 1, characterized in that, The top of the guardrail (1) is provided with a pre-embedded hole, and the mounting base (2) is provided with an anchor bolt hole (21) corresponding to and communicating with the pre-embedded hole. The threaded end of the anchor bolt (7) passes through the pre-embedded hole and the anchor bolt hole (21) in sequence, and the mounting base (2) is fastened to the back of the guardrail (1) by a high-strength nut.

4. A metal sound barrier unit panel for rail transit according to claim 1, characterized in that, The top of the sound shield (4) has an arc-shaped surface facing the road. A photovoltaic panel (5) is fixed to the top surface of the sound shield (4) away from the guardrail (1), and a street lamp (6) electrically connected to the photovoltaic panel (5) is fixed to the top surface of the other side.

5. A metal sound barrier unit panel for rail transit according to claim 1, characterized in that, The mounting base (2), the fixing frame (3) and the sound shield (4) are all made of aluminum alloy and are integrally pressed together with the sound shield (4).

6. A metal sound barrier unit panel for rail transit according to claim 1, characterized in that, The number of fixed frames (3) is multiple, and the opposite sides of two adjacent fixed frames (3) are inserted and fastened together.

7. A metal sound barrier unit panel for rail transit according to claim 6, characterized in that, The ventilation holes (33) on both sides of the slot (31) of the two adjacent fixed frames (3) are connected to the ventilation holes (33) on the insert (32).

8. A metal sound barrier unit panel for rail transit according to claim 6, characterized in that, The tops of two adjacent fixed frames (3) are fastened by fastening bolts (8).

9. A metal sound barrier unit panel for rail transit according to claim 1, characterized in that, The height of the sound shield (4) is not less than 3.5m and the width is not greater than 1.5m.

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