Near-rail noise reduction device for rail transit

Abstract

The utility model discloses a near-rail noise reduction device for rail transit. The near-rail noise reduction device comprises a limiting mechanism and damping and noise reduction bodies installed on the two sides of the limiting mechanism. The limiting mechanism comprises a steel rail, the bottom of the steel rail is connected with a buffer insulating plate in a clamped mode, and the bottom of the buffer insulating plate is connected with a connecting base in an attached mode. The tops of the left end and the right end of the connecting base are connected with pressing blocks in an attached mode, and one end of each pressing block is fixedly connected with an insulating block. Wherein the side, away from the pressing block, of the insulating block is connected with the shock absorption and noise reduction body in an attached mode, one side of the shock absorption and noise reduction body is connected with the steel rail in an attached mode, grooves are formed in the left end and the right end of the connecting base correspondingly, plug connectors are arranged in the two grooves correspondingly, and the outer sides of the plug connectors are fixedly connected with the pressing block; and by arranging the limiting mechanism, the damping and noise-reducing body can be installed and fixed, later replacement of the damping and noise-reducing body is facilitated, and the maintenance efficiency of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of urban rail transit technology, specifically to a near-rail noise reduction device for rail transit. Background Technology

[0002] Urban rail transit plays a crucial role in improving residents' travel quality, enhancing the urban ecological environment, promoting urban economic development, and optimizing urban spatial layout. However, with the continuous densification of urban rail transit networks, the increasing speed of trains, and the growing service life of lines, the resulting vibration and noise problems are becoming increasingly serious and attracting more and more attention. Internationally, vibration and noise have become one of the seven major environmental hazards. During rail transportation, rail vibration is the main cause of noise. Studies have shown that wheel-rail noise accounts for a high proportion of railway noise generated during train operation, and the medium and high frequency noise radiated by rail vibration makes a particularly significant contribution to the final total noise. Therefore, the control of rail vibration and noise is of great importance for vibration reduction and noise reduction in urban rail transit.

[0003] Publication number CN211922102U discloses a near-rail noise reduction device for rail transit. It features a simple structure, stable performance, a wider applicable frequency range, long service life, and good vibration and noise reduction effects. By using an elastic clip to hook one end onto the inside of the rail and the other end to lock into a groove on the noise reduction body, the noise reduction body can be tightly attached to the rail surface. However, this patent still has the following problems in practical use:

[0004] Although this type of rail transit near-rail noise reduction device can tightly hook the noise reduction body onto the rail surface by hooking one end of the elastic clip to the inside of the rail and the other end to the groove on the noise reduction body, it is not convenient to replace the noise reduction body when it is damaged, thus reducing the maintenance efficiency of the device.

[0005] A near-rail noise reduction device for rail transit is proposed to address the problems mentioned above. Utility Model Content

[0006] The purpose of this utility model is to provide a near-rail noise reduction device for rail transit, in order to solve the problem mentioned in the background art that the current method of using an elastic clip to hook one end of the rail to the inside of the rail and the other end to the groove on the noise reduction body can tightly hook the noise reduction body to the rail surface, but when the noise reduction body is damaged, it is not convenient to replace the noise reduction body, thus reducing the maintenance efficiency of the device.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a near-rail noise reduction device for rail transit, including a limiting mechanism and vibration damping and noise reduction bodies installed on both sides of the limiting mechanism;

[0008] Also includes:

[0009] The limiting mechanism includes a steel rail, a buffer insulation plate is engaged with the bottom of the steel rail, and a connecting seat is attached to the bottom of the buffer insulation plate.

[0010] Among them, the top of both the left and right ends of the connector is fitted with a clamping block, and an insulating block is fixedly connected to one end of the clamping block;

[0011] The insulating block is attached to the side away from the clamping block and is connected to the shock absorber and noise reducer, while the side of the shock absorber and noise reducer is connected to the rail.

[0012] Preferably, the connector has grooves inside both the left and right ends, and each of the two grooves has a connector inside, with the outer side of the connector being fixedly connected to the clamping block.

[0013] Preferably, a through hole is provided at the center of the connector, and a push rod is provided inside the through hole.

[0014] Preferably, a spring is sleeved on the outer side of the push rod, one end of the spring is fitted and connected to the through hole, and the other end of the spring is fitted and connected to the button.

[0015] Preferably, the bottom side of the button is fixedly connected to the push rod, and a cap is provided on the top of the button, with the outer side of the cap being threadedly connected to the connector.

[0016] Preferably, the connector has symmetrically provided limiting grooves on the left and right sides of the end away from the cap, and steel balls are provided inside both limiting grooves.

[0017] Preferably, one side of the steel ball is fitted and connected to the groove, and the other side of the steel ball is fitted and connected to the push rod.

[0018] Compared with the prior art, the beneficial effects of this utility model are: This near-rail noise reduction device for rail transit, by setting a limiting mechanism, can install and fix the vibration damping and noise reduction body, which facilitates the replacement of the vibration damping and noise reduction body in the future and improves the maintenance efficiency of the device. The specific details are as follows:

[0019] The installation and fixation of the vibration damping and noise reduction body can be achieved by setting a limiting mechanism, which facilitates the replacement of the vibration damping and noise reduction body in the future and improves the maintenance efficiency of the device. The vibration damping and noise reduction body is made of polyurethane elastomer, which is a commonly used vibration damping and noise reduction material with excellent elasticity, wear resistance and oil resistance. It can reduce the vibration and noise generated during operation and improve the riding environment. By using the cooperation between the steel ball and the groove, the clamping block can be quickly fixed at both ends of the connecting seat, and the vibration damping and noise reduction body can be fixed on both sides of the rail, thus completing the installation of the vibration damping and noise reduction body. By setting a spring, the push rod can always be in contact with the steel ball and limit it when no external force is applied, thereby improving the stability of the clamping block fixation. By pressing the button, the push rod moves downward in the through hole, which releases the limit of the push rod on the steel ball, so that the steel ball slides down the inner wall of the limiting groove into the through hole, thereby releasing the limit of the steel ball on the connector, and the connector can be removed from the groove, thus completing the disassembly of the clamping block and facilitating the replacement of the vibration damping and noise reduction body. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall partial cross-sectional structure of this utility model;

[0021] Figure 2 This utility model Figure 1 Enlarged structural diagram of the middle limit mechanism;

[0022] Figure 3 This utility model Figure 2 Schematic diagram of the spring in compression state;

[0023] Figure 4 This utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0024] In the diagram: 1. Limiting mechanism; 101. Rail; 102. Buffer insulation plate; 103. Connecting seat; 104. Pressing block; 105. Insulating block; 106. Vibration damping and noise reduction body; 107. Groove; 108. Connector; 109. Through hole; 110. Push rod; 111. Spring; 112. Button; 113. Cap; 114. Limiting groove; 115. Steel ball. Detailed Implementation

[0025] 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.

[0026] Please see Figure 1-4The present invention provides a technical solution: a near-rail noise reduction device for rail transit, including a limiting mechanism 1 and shock-absorbing and noise-reducing bodies 106 installed on both sides of the limiting mechanism 1; the limiting mechanism 1 includes a rail 101, a buffer insulation plate 102 is engaged and connected to the bottom of the rail 101, and a connecting seat 103 is attached to the bottom of the buffer insulation plate 102; a pressing block 104 is attached to the top of both ends of the connecting seat 103, and an insulating block 105 is fixedly connected to one end of the pressing block 104. The buffer insulation plate 102 and the insulating block 105 can play an insulating role by setting them together;

[0027] The side of the insulating block 105 away from the clamping block 104 is attached to the vibration damping and noise reduction body 106, and the side of the vibration damping and noise reduction body 106 is attached to the rail 101. The vibration damping and noise reduction body 106 is made of polyurethane elastomer. Polyurethane is a commonly used vibration damping and noise reduction material with excellent elasticity, wear resistance and oil resistance. It can reduce the vibration and noise generated during operation and improve the riding environment.

[0028] The connector 103 has grooves 107 inside both the left and right ends. Each groove 107 has a connector 108 inside. The outer side of the connector 108 is fixedly connected to the clamping block 104. A through hole 109 is opened in the center of the connector 108. A push rod 110 is installed inside the through hole 109. The push rod 110 is slidably connected to the through hole 109.

[0029] A spring 111 is fitted on the outer side of the push rod 110. One end of the spring 111 is fitted and connected to the through hole 109, and the other end of the spring 111 is fitted and connected to the button 112. The bottom side of the button 112 is fixedly connected to the push rod 110. A cap 113 is provided above the button 112. The outer side of the cap 113 is threadedly connected to the plug 108. By providing the cap 113, accidental contact can be avoided, which could cause the clamping block 104 to loosen.

[0030] The connector 108 has symmetrically provided limiting grooves 114 on the left and right sides of the end away from the cap 113. Each limiting groove 114 is provided with a steel ball 115. One side of the steel ball 115 is fitted and connected to the groove 107, and the other side of the steel ball 115 is fitted and connected to the push rod 110. By utilizing the cooperation between the steel ball 115 and the groove 107, the clamping block 104 can be quickly fixed to both ends of the connecting seat 103, and the shock absorber and noise reducer 106 can be fixed to both sides of the rail 101.

[0031] Working principle: Before using this type of near-rail noise reduction device for rail transit, it is necessary to check the overall condition of the device to ensure it can operate normally. Figure 1 - Figure 4As shown, when it is necessary to replace the vibration damping and noise reduction body 106, first rotate the cap 113 to expose the button 112 to the air, then press the button 112. The button 112 drives the push rod 110 to move downward in the through hole 109, which releases the limit of the push rod 110 on the steel ball 115, so that the steel ball 115 slides down along the inner wall of the limiting groove 114 into the through hole 109, thereby releasing the limit of the steel ball 115 on the connector 108. The connector 108 can then be removed from the groove 107, thus completing the disassembly of the clamping block 104, which facilitates the replacement of the vibration damping and noise reduction body 106.

[0032] Although the present invention 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 invention should be included within the protection scope of the present invention.

Claims

1. A near-rail noise reduction device for rail transit, comprising a limiting mechanism (1) and vibration damping and noise reduction bodies (106) installed on both sides of the limiting mechanism (1). Its features are, Also includes: The limiting mechanism (1) includes a rail (101), a buffer insulation plate (102) is engaged with the bottom of the rail (101), and a connecting seat (103) is attached to the bottom of the buffer insulation plate (102). Among them, the top of both ends of the connecting seat (103) are fitted with clamping blocks (104), and one end of the clamping block (104) is fixedly connected with an insulating block (105). The insulating block (105) is attached to the side away from the pressing block (104) and connected to the shock absorber (106), and the side of the shock absorber (106) is attached to the rail (101).

2. The near-rail noise reduction device for rail transit according to claim 1, characterized in that: The connector (103) has grooves (107) inside both the left and right ends, and each of the two grooves (107) has a connector (108) inside. The outer side of the connector (108) is fixedly connected to the clamping block (104).

3. The near-rail noise reduction device for rail transit according to claim 2, characterized in that: A through hole (109) is provided at the center of the connector (108), and a push rod (110) is provided inside the through hole (109).

4. A near-rail noise reduction device for rail transit according to claim 3, characterized in that: A spring (111) is fitted on the outside of the push rod (110). One end of the spring (111) is fitted and connected to the through hole (109), and the other end of the spring (111) is fitted and connected to the button (112).

5. A near-rail noise reduction device for rail transit according to claim 4, characterized in that: The bottom side of the button (112) is fixedly connected to the push rod (110), and a cap (113) is provided above the button (112). The outer side of the cap (113) is threadedly connected to the plug (108).

6. A near-rail noise reduction device for rail transit according to claim 5, characterized in that: The connector (108) has symmetrically provided limiting grooves (114) on the left and right sides of the end away from the cap (113), and steel balls (115) are provided inside the two limiting grooves (114).

7. A near-rail noise reduction device for rail transit according to claim 6, characterized in that: One side of the steel ball (115) is fitted and connected to the groove (107), and the other side of the steel ball (115) is fitted and connected to the push rod (110).

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