Sound insulation barrier for high-speed railway

Abstract

A sound insulation barrier for a high-speed railway comprises a base, a butt joint groove is formed in one side of the base, a connecting body is arranged in the butt joint groove in a penetrating mode, barrier sleeve bases are connected to the two sides of the connecting body in a sleeved mode, guiding installation frames are connected to the barrier sleeve bases in a clamped mode, and a sound absorption plate is connected between the two guiding installation frames. The sound insulation barrier is directly connected to the base through the connecting body and is suitable for the road environment with the limited space, the whole device is compact, and meanwhile the adverse effect of direct connection of the sound insulation barrier on a damping system is avoided through the connecting body made of rubber. Through the arrangement of the movable upper supporting seat and the movable lower supporting seat, on the premise that the bearing capacity is guaranteed, the purpose of convenient operation of replacing the damping seat is achieved through dislocation control of the damping seat, and meanwhile when the damping seat is replaced, jacking of the supporting piece is controlled in a linkage mode, and the auxiliary supporting effect is achieved.

Description

Technical Field

[0001] The invention relates to the field of sound insulation barriers, and in particular to a sound insulation barrier for high-speed railways. Background Art

[0002] The noise generated by high-speed rail operation mainly includes wheel-rail friction noise, aerodynamic noise, bridge structure vibration noise, etc. As the train speed increases (especially when it exceeds 300km / h), the noise intensity increases significantly. When the high-speed rail is running at high speed, the proportion of aerodynamic noise exceeds that of wheel-rail noise. Traditional rail vibration reduction measures have limited effect, and sound barriers are needed to directly block the noise propagation path.

[0003] Especially in tunnels, the inner wall of the tunnel (concrete or rock) reflects sound waves strongly, forming a reverberant sound field with multiple reflections, which leads to a significant increase in noise levels. Sound waves of specific frequencies form standing waves in the tunnel, and local noise may be amplified. Although the tunnel itself has a certain degree of closure, noise can still be transmitted through various channels and have a negative impact on the surrounding environment and passenger comfort. When a train is running in a tunnel, the noise in the carriage may reach 80~90dB(A) by setting up a sound barrier, and long-term exposure may damage hearing.

[0004] The barrier can reduce the reverberation noise in the tunnel and improve the riding environment. At present, the sound insulation barrier is set up independently. When the sound insulation barrier is set up, there is a distance of ≥0.5 meters between it and the floating plate, which is usually required to reserve space for track equipment maintenance and drainage system cleaning. At the same time, it prevents the barrier from reflecting vibration waves back to the track, affecting the performance of the floating plate, and reduces the "reverberation effect" formed by the reflection of sound waves between the barrier and the track, thereby improving the noise reduction efficiency. The floating plate isolates the concrete track plate from the foundation structure through elastic elements, thereby effectively reducing the vibration and noise transmission caused by train operation.

[0005] The present invention provides a sound insulation barrier designed in coordination with a floating plate, which is suitable for application scenarios with limited space, such as tunnels. Summary of the invention

[0006] According to the problems raised in the background technology, the present invention provides a sound insulation barrier for high-speed railways to solve the problems. The present invention will be further explained below.

[0007] A sound insulation barrier for high-speed railways comprises a base, one side of the base is provided with a docking groove, a connector is provided in the docking groove, both sides of the connector are sleeved with barrier sleeves, a guide mounting frame is clamped on the barrier sleeve, and a sound absorbing board is connected between the two guide mounting frames.

[0008] Preferably, the connector is a rubber column, and the bottom of the barrier sleeve is connected to a support seat, which is isolated from the base through the shock-absorbing and isolating effect of the rubber.

[0009] Preferably, a shock absorbing seat is provided on the top of the base, a slide groove is provided on the top of the base, and the shock absorbing seat is provided with an integrally protruding flange, and the flange is fitted on the slide groove.

[0010] Preferably, the base is provided with a cavity, and a card slot connected to the slide slot is provided on the top of the base, and the card slot is connected to the slide slot; the base cavity also has a built-in limit seat, and a screw is provided on the limit seat, one end of the screw extends outside the base, and a lower support seat is matched on the screw, and the lower support seat is placed on the base; the base cavity also has a built-in upper support seat, and the upper support seat includes an integrally arranged shock-absorbing matching seat and an extrusion matching seat, wherein the shock-absorbing matching seat is in contact with the inner wall of the base, the shock-absorbing seat is arranged on the shock-absorbing matching seat, and the extrusion matching seat contacts the top surface of the lower support seat downward; the opposite surface of the extrusion matching seat and the lower support seat is set as an inclined surface. Controlling the misalignment of the upper support seat and the lower support seat allows the shock-absorbing seat to move downward and out of the card slot when replaced, and then can be quickly taken out and replaced.

[0011] Preferably, a movable groove is provided on the top of the base, in which a movable support is provided, a top block is provided on the support, and the top block and the lower support seat are provided with an inclined surface on the opposite side. When the shock-absorbing seat is replaced, when the lower support seat moves, the top of the linkage support member extends out from the movable groove to play a role of temporary auxiliary support.

[0012] Beneficial effects: Compared with the prior art, the sound insulation barrier of the present invention is directly connected to the base through a connector, which is suitable for road environments with limited space. The overall device is compact, and the connector made of rubber material avoids the adverse effects of the direct connection of the sound insulation barrier on the shock absorption system. By setting up movable upper and lower support seats, the purpose of convenient operation of replacing the shock absorption seat is achieved through its dislocation control while ensuring the bearing capacity. At the same time, when replacing the shock absorption seat, the support member is controlled to be lifted in linkage to play a role of auxiliary support. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 : A schematic diagram of the structure of the sound insulation barrier for high-speed railways of the present invention; Figure 2 : Schematic diagram of the internal structure of the base; Figure 3 : Explosion diagram of the internal structure of the base; Figure 4 : Schematic diagram of the installation of the support on the base; Figure 5 : Schematic diagram of the structural connection between the support member and the lower support seat; In the figure: base 1, docking groove 101, slide groove 102, card slot 103, connector 2, barrier sleeve 3, guide mounting frame 4, sound absorbing panel 5, support seat 6, shock absorbing seat 7, flange 701, limit seat 8, screw 9, lower support seat 10, upper support seat 11, shock absorbing fitting seat 111, extrusion fitting seat 112, gear 12, chain 13, support member 14, top block 15. DETAILED DESCRIPTION

[0014] Next, combine with Figure 1-5 A specific embodiment of the present invention is described in detail.

[0015] Reference Figure 1 A sound insulation barrier for high-speed railways includes a base 1, a docking groove 101 is provided on one side of the base 1, a connector 2 is provided in the docking groove 101, barrier sleeves 3 are sleeved on both sides of the connector 2, a guide mounting frame 4 is clamped on the barrier sleeve 3, and a sound absorbing board 5 is connected between the two guide mounting frames 4. The barrier sleeve 3, the guide mounting frame 4, and the sound absorbing board 5 constitute a detachable sound insulation barrier, and are directly connected to the base 1 through the connector 2 to form a compact integrated installation device.

[0016] The floating plate directly bears more than 90% of the train load and transmits it to the foundation structure through elastic supports, reducing the transmission of structural vibration. The barrier absorbs air noise. The combination of the two can comprehensively reduce the noise inside and outside the tunnel. However, the floating plate is generally designed independently, and the direct connection of the sound insulation barrier will affect the optimal vibration isolation effect of the vibration isolation system. Based on this, in the present invention, the connector 2 is a rubber column, which is isolated from the base through the shock-absorbing isolation of the rubber. The bottom of the barrier sleeve 3 is connected to a support seat 6, and the sound insulation barrier stands on the foundation through the support seat 6.

[0017] Reference Figure 1-3 A shock absorbing seat 7 is provided on the top of the base 1. The seat is made of rubber and has the advantages of low cost and easy installation. It is suitable for medium and low frequency vibration reduction needs. For convenient installation, a slide groove 102 is provided on the top of the base 1 in this embodiment, and the shock absorbing seat 7 is provided with an integrally protruding flange 701. During installation, the flange 701 can be aligned with the slide groove 102 and pushed in.

[0018] According to common sense, the shock-absorbing seat 7 made of rubber has poor durability, so it needs to be replaced after running for a period of time. In this embodiment, in order to make the shock-absorbing seat easy to replace, the following technical scheme is adopted: the base 1 is set as a cavity, the shock-absorbing seat 7 is placed on the top of the cavity, and a card slot 103 is provided on the base 1, and this card slot 103 is connected with the slide slot 102; the inner cavity of the base also has a built-in limit seat 8, and the limit seat 8 is provided with a screw 9, one end of the screw extends to the outside of the base, and the screw 9 is matched with a lower support seat 10, and the lower support seat 10 is placed on the base; the inner cavity of the base also has a built-in upper support seat 11, and the upper support seat 11 includes an integrally arranged shock-absorbing fitting seat 111 and an extrusion fitting seat 112, wherein the shock-absorbing fitting seat 111 is in contact with the inner wall of the base, the shock-absorbing seat 7 is arranged on the shock-absorbing fitting seat 111, and the extrusion fitting seat 112 contacts the top surface of the lower support seat 10 downwardly; the extrusion fitting seat 112 and the lower support seat 10 The opposite surface is set as an inclined surface.

[0019] When the shock-absorbing seat 7 needs to be replaced, the screw rod 9 extends to one end outside the base and connects to the driving source, driving the screw rod 9 to rotate, thereby causing the lower support seat 10 to move to the side away from the limiting seat 8. The upper support seat 11 is stationary due to the contact between the shock-absorbing fitting seat 111 and the inner wall of the base, and the extrusion fitting seat 112 slides relatively with the lower support seat 10. When the lower support seat 10 moves to its inclined surface and contacts the inclined surface of the extrusion fitting seat 112, the upper support seat 11 moves downward under its own weight, thereby causing the shock-absorbing seat 7 carried thereon to also move downward, disengage from the slot 103 and fall back to the sliding surface on the top of the base 1 The upper support seat 11 is lifted up into position and the lower support seat 10 is pressed into the groove 103. The lower support seat 10 is then pushed into the groove 102 and the upper support seat 11 is pressed into the groove 103.

[0020] It can be seen that this solution controls the misalignment of the upper support seat 11 and the lower support seat 10 so that the shock absorber seat 7 can be moved downward and out of the slot when replaced, and then can be quickly taken out and replaced. In the working state, the weight and vibration of the train are transmitted to the foundation through the shock absorber seat 7, the upper support seat 11, and the lower support seat 10, and the screw will not bear the load. The setting of the slide groove 102 is to facilitate the removal and placement of the shock absorber seat 7, and the setting of the slot 103 is to provide a limit for the shock absorber seat to prevent it from sliding on the slide groove under vibration. The function of the limit seat 8 is not only to install the screw, but also to limit the downward movement of the upper support seat 11.

[0021] In this embodiment, in order to make the movement of the lower support seat 10 more stable, two parallel screws are provided in this embodiment. The non-threaded sections on the screw 9 are key-connected with gears 12. The two gears 12 are connected by a chain 13. An external power device can drive the two screws to rotate synchronously at one time.

[0022] Reference Figure 3-5 When the shock absorber seat 7 is replaced, the upper support seat moves downward and no longer carries the load. This embodiment achieves the purpose of temporary load bearing when the shock absorber seat is replaced by providing a support member 14. Specifically, a movable groove 104 is provided on the top of the base 1, in which a movable support member 14 is provided. A top block 15 is provided on the support member 14, and the top block 15 and the lower support seat 10 are set as an inclined surface on the opposite side. When the shock absorber seat 7 is replaced, when the lower support seat 10 moves, the top block 15 is first contacted by the inclined surface and then squeezed and lifted, so that the top of the support member 14 extends out of the base from the movable groove 104, and then the upper support seat 11 moves downward, so that the purpose of replacing the shock absorber seat is achieved after the support member 14 plays a supporting role.

[0023] In the present invention, the sound insulation barrier is directly connected to the base through a connector, which is suitable for road environments with limited space. The overall device is compact, and the connector made of rubber material avoids the adverse effects of the direct connection of the sound insulation barrier on the shock absorption system. By arranging movable upper and lower support seats, the purpose of convenient operation of replacing the shock absorption seat is achieved through the dislocation control while ensuring the bearing capacity. At the same time, when replacing the shock absorption seat, the support member is controlled to be lifted in linkage, which plays a role of auxiliary support.

[0024] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A sound insulation barrier for high-speed railway, characterized in that: The invention comprises a base (1), a docking groove (101) is provided on one side of the base (1), a connecting body (2) is provided in the docking groove (101), barrier sleeves (3) are sleeved on both sides of the connecting body (2), a guide mounting frame (4) is clamped on the barrier sleeve (3), and a sound absorbing board (5) is connected between the two guide mounting frames (4).

2. The high-speed railway noise barrier according to claim 1, characterized in that: The connecting body (2) is a rubber column, and the bottom of the barrier sleeve (3) is connected to a support seat (6).

3. The high-speed railway noise barrier according to claim 2, characterized in that: A shock absorbing seat (7) is provided on the top of the base (1), a slide groove (102) is provided on the top of the base (1), and the shock absorbing seat (7) is provided with an integrally protruding flange (701), and the flange (701) is fitted on the slide groove (102).

4. The high-speed railway noise barrier according to claim 3, characterized in that: The base (1) is configured as a cavity. The top of the base (1) is provided with a slot (103) connected to the slide groove (102), and the slot (103) is connected to the slide groove (102). The base cavity also has a built-in limit seat (8). The limit seat (8) is provided with a screw (9), one end of the screw extends outside the base. The screw (9) is matched with a lower support seat (10), and the lower support seat (10) is placed on the base. The base cavity also has a built-in upper support seat (11). The upper support seat (11) includes an integrally arranged shock-absorbing fitting seat (111) and an extrusion fitting seat (112). The shock-absorbing fitting seat (111) is in contact with the inner wall of the base. The shock-absorbing seat (7) is arranged on the shock-absorbing fitting seat (111), and the extrusion fitting seat (112) contacts the top surface of the lower support seat (10) downwardly. The surface opposite to the extrusion fitting seat (112) and the lower support seat (10) is configured as an inclined surface.

5. The high-speed railway noise barrier according to claim 4, characterized in that: The base (1) is provided with two parallel screws, and the non-threaded sections on the screws (9) are key-connected with gears (12), and the two gears (12) are connected by a chain (13).

6. The high-speed railway noise barrier according to claim 4, characterized in that: The top of the base (1) is provided with a movable groove (104), in which a movable support member (14) is provided. A top block (15) is provided on the support member (14), and the top block (15) and the lower support seat (10) are arranged as inclined surfaces on a surface opposite to each other.

Images