Rail dampener assembly

Abstract

The application relates to a rail damping fastener device installed on a sleeper, wherein the sleeper is provided with a first positioning groove for mounting the device; the device comprises, from bottom to top, a first buffer pad plate, a second buffer pad plate and a fastener plate detachably connected to the two sides of the second buffer pad plate; the ends of the two fastener plates abut against the lower parts of the left and right sides of a rail, and the rail is installed on the middle part of the upper surface of the second buffer pad plate; a third buffer pad plate is further installed between the bottom of the rail and the upper surface of the second buffer pad plate; and one end of the fastener plate is connected with the second buffer pad plate through a locking piece. The damping effect and the connection stability are effectively improved, the device is convenient to install and maintain, and the device is suitable for the field of rail transit.

Description

Technical Field

[0001] This application relates to the field of rail transit technology, and in particular to a rail vibration damping fastener device. Background Technology

[0002] In rail transit systems, rail vibration damping fasteners are crucial components connecting rails and sleepers, directly impacting train stability, comfort, and the track structure's lifespan. Currently, existing rail vibration damping fasteners have limitations in vibration reduction. Firstly, some fasteners employ a single buffer structure, which is insufficient to effectively absorb high-frequency vibrations and impacts generated during train operation, leading to the transfer of vibration energy to the sleepers and track foundation, accelerating fatigue damage to the track structure. Secondly, existing fastener connections are not robust enough; under long-term train loads, the fastener plate and buffer pad are prone to loosening, affecting vibration damping performance and posing safety hazards. Furthermore, existing fasteners are complex to install and disassemble, hindering subsequent maintenance and repair, increasing operating costs and maintenance difficulty. Utility Model Content

[0003] This utility model mainly addresses the problems of poor shock absorption effect, unstable connection, and inconvenient installation and maintenance of existing rail shock-absorbing fasteners, and provides a rail shock-absorbing fastener device.

[0004] The objective of this utility model is mainly achieved through the following solution:

[0005] A rail vibration damping fastener device is installed on a sleeper. The sleeper is provided with a first positioning groove for the installation of the device. The device includes a first buffer pad, a second buffer pad, and fastener plates detachably connected to both sides of the second buffer pad, arranged sequentially from bottom to top. The ends of the two fastener plates abut against the lower parts of the left and right sides of the rail, and the rail is installed in the middle of the upper surface of the second buffer pad. A third buffer pad is also installed between the bottom of the rail and the upper surface of the second buffer pad.

[0006] One end of the buckle plate is connected to the second buffer pad via a locking device.

[0007] Preferably, the first buffer pad has a U-shaped structure, and the bottom of the first buffer pad is adapted to the first positioning groove. The upper surface of the first buffer pad is provided with a second positioning groove, and the bottom of the second buffer pad is adapted to the second positioning groove.

[0008] Preferably, the bottom of the second positioning groove has multiple recesses longitudinally formed.

[0009] Preferably, the upper surface of the second buffer pad is symmetrically provided with vertical baffles, and a third positioning groove is formed between the two vertical baffles. The bottom of the third buffer pad and the bottom of the rail are both installed at the bottom of the third positioning groove.

[0010] Preferably, the second locking component includes a locking bolt and a pad, wherein the threaded portion of the locking bolt passes through the buckle plate and the pad in sequence and is threadedly connected to the second buffer pad, the first buffer pad, and the sleeper.

[0011] Preferably, the upper surface of the second buffer pad has symmetrically formed limiting grooves on both sides, and the bottom of the pad is adapted to the limiting grooves.

[0012] In summary, compared with the prior art, the present invention has the following beneficial technical effects:

[0013] (1) By setting a first buffer pad, a second buffer pad and a third buffer pad, the present invention forms a multi-level buffer structure. During the operation of the train, each level of buffer pad can absorb and buffer vibrations of different frequencies and intensities in sequence, effectively reducing the transmission of vibration to the sleepers and track foundation, greatly improving the vibration reduction effect of the track system, and extending the service life of the track structure. At the same time, the recess at the bottom of the second positioning groove and the vertical baffle structure design on the second buffer pad further enhance the elastic deformation capacity and vibration absorption capacity of the buffer pad.

[0014] (2) In this utility model, the buckle plate is firmly connected to the second buffer plate, the first buffer plate and the sleeper through locking bolts and pads. The matching design of the pads and the limiting groove ensures that the buckle plate will not loosen under long-term train load, and can always maintain stable clamping of the rail, ensuring the stability of the connection between the rail and the sleeper, and improving the safety of the track system.

[0015] (3) The components of this utility model are designed with positioning grooves and matching structures, which can be assembled quickly and accurately during the installation process, reducing the difficulty of installation and time cost. At the same time, the detachable buckle plate and buffer pad structure makes it easy to replace damaged parts during later maintenance and repair, improving maintenance efficiency and reducing operating costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is an exploded view of the present invention;

[0018] Figure 3 This is a schematic diagram of the installation of this utility model on a sleeper.

[0019] Reference numerals: 1-Sleeper, 2-First positioning groove, 3-First buffer pad, 4-Second buffer pad, 5-Snap plate, 6-Rail, 7-Third buffer pad, 8-Third positioning groove, 9-Notch, 10-Vertical stop bar, 11-Third positioning groove, 12-Locking bolt, 13-Padded block, 14-Limiting groove. Detailed Implementation

[0020] The technical solution of this utility model will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings. It should be understood that the implementation of this utility model is not limited to the following embodiments, and any modifications and / or alterations made to this utility model will fall within the protection scope of this utility model.

[0021] Example 1:

[0022] like Figure 1 , 2 As shown in Figure 3, this utility model discloses a technical solution: a rail vibration damping fastener device, which is installed on a sleeper 1. The sleeper 1 has a first positioning groove 2 longitudinally provided for the installation of the device. The device includes a first buffer pad 3, a second buffer pad 4, and fastener plates 5 detachably connected to both sides of the second buffer pad 4, arranged sequentially from bottom to top. The ends of the two fastener plates 5 respectively abut against the lower parts of the left and right sides of the rail 6, and the rail 6 is installed in the middle of the upper surface of the second buffer pad 4. A third buffer pad 7 is also installed between the bottom of the rail 6 and the upper surface of the second buffer pad 4. One end of the fastener plate 5 is connected to the second buffer pad 4 through a locking member.

[0023] The first buffer pad 3, the second buffer pad 4, and the third buffer pad 7 are all made of rubber, forming a multi-level shock absorption system. The first, second, and third buffer pads work together to absorb vibrations of different frequencies and intensities generated during train operation in a layered manner, which greatly improves the shock absorption effect compared to a single buffer structure. The detachable fastener 5 facilitates later maintenance and replacement. The locking connection ensures the stability of the connection between the fastener 5 and the buffer pad, preventing loosening under long-term train load and ensuring the reliability of the connection between the rail 6 and the sleeper 1. This effectively solves the problems of poor shock absorption and unstable connection in the existing technology.

[0024] Example 2:

[0025] like Figure 1 , 2As shown, this utility model discloses another technical solution, a rail vibration damping fastener device, which differs from embodiment 1 in that the first buffer pad 3 has a U-shaped structure, and the bottom of the first buffer pad 3 is adapted to the first positioning groove 2. A second positioning groove 8 is longitudinally formed in the middle of the upper surface of the first buffer pad 3, and the bottom of the second buffer pad 4 is adapted to the second positioning groove 8. The U-shaped first buffer pad 3 is tightly fitted with the first positioning groove 2 on the sleeper 1, which can effectively limit the horizontal displacement of the first buffer pad 3. The adaptation design of the second positioning groove 8 and the second buffer pad 4 further enhances the connection stability between the first buffer pad 3 and the second buffer pad 4, so that the entire vibration damping fastener device maintains structural stability during train operation and avoids the impact of pad displacement on vibration damping performance and track safety.

[0026] Specifically, the bottom of the second positioning groove 8 has multiple recesses 9 longitudinally formed. The presence of the recesses 9 increases the friction between the second buffer pad 4 and the first buffer pad 3, preventing the second buffer pad 4 from sliding on the first buffer pad 3. At the same time, when the train vibrates, the recesses 9 can undergo elastic deformation to further absorb and buffer the vibration energy. Combined with the multi-stage buffer pad structure, this further improves the vibration damping performance of the rail damping fastener device and effectively reduces the transmission of vibration to the track foundation.

[0027] Example 3:

[0028] like Figure 1 , 2 As shown, this utility model discloses another technical solution: a rail vibration damping fastener device. The difference from embodiment 1 is that the upper surface of the second buffer pad 4 is symmetrically provided with integrally formed vertical baffles 10, and a third positioning groove 11 is formed between the two vertical baffles 10. The bottoms of the third buffer pad 7 and the rail 6 are both installed at the bottom of the third positioning groove 11. The vertical baffles 10 can restrict the horizontal displacement of the rail 6, ensuring that the rail 6 maintains the correct position during operation and avoiding lateral deviation. The third positioning groove 11 provides a stable installation space for the third buffer pad 7 and the rail 6, enabling them to stably perform vibration damping when subjected to train loads, enhancing the stability of the connection between the rail 6 and the buffer pad, and ensuring the smooth operation of the track system.

[0029] Specifically, the second locking component includes a locking bolt 12 and a pad 13. The bottom of the pad 13 has a square structure. The threaded part of the locking bolt 12 passes through the buckle plate 5 and the pad 13 in sequence and is threadedly connected to the second buffer pad 4, the first buffer pad 3, and the sleeper 1. The locking bolt 12 can firmly fix the buckle plate 5 on the second buffer pad 4. The pad 13 not only increases the force-bearing area and prevents the buckle plate 5 and the buffer pad from being damaged due to excessive local stress, but also adjusts the distance between the buckle plate 5 and the buffer pad to a certain extent, ensuring that the buckle plate 5 effectively clamps the rail 6. Through the threaded connection, the connection between the components is tight and not easy to loosen under long-term train load, which greatly enhances the overall stability of the rail vibration damping fastener device and eliminates safety hazards.

[0030] Specifically, the upper surface of the second buffer pad 4 is symmetrically provided with limiting grooves 14 on both sides, and the bottom of the pad 13 is adapted to the limiting grooves 14. The cooperation between the limiting grooves 14 and the pad 13 can accurately limit the movement of the pad 13 in the horizontal direction, prevent the pad 13 from shifting when under force, thereby ensuring that the locking bolt 12 is always in the correct stress state, and ensuring that the connection between the fastener 5 and the second buffer pad 4 is stable and reliable. Even under frequent vibration and impact of the train, it can maintain good connection performance, further improving the overall stability and reliability of the rail vibration damping fastener device.

[0031] During train operation, when rail 6 is subjected to vibration and impact, the third buffer plate 7 first absorbs some of the energy, followed by the second buffer plate 4 and the first buffer plate 3, which in turn play a buffering role. The multi-stage buffer structure effectively reduces the transmission of vibration to sleepers 1. At the same time, the fastening plate 5 firmly clamps rail 6 through locking components, ensuring the stable operation of rail 6.

[0032] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A rail vibration damping fastener device, installed on a sleeper (1), wherein the sleeper (1) is provided with a first positioning groove (2) for installing the device, characterized in that: The device includes a first buffer pad (3), a second buffer pad (4) arranged sequentially from bottom to top, and buckles (5) detachably connected to both sides of the second buffer pad (4). The ends of the two buckles (5) respectively abut against the lower part of the left and right sides of the rail (6), and the rail (6) is installed in the middle of the upper surface of the second buffer pad (4). A third buffer pad (7) is also installed between the bottom of the rail (6) and the upper surface of the second buffer pad (4). One end of the buckle plate (5) is connected to the second buffer pad (4) via a locking member.

2. The rail vibration damping fastener device according to claim 1, characterized in that: The first buffer pad (3) has a U-shaped structure, and the bottom of the first buffer pad (3) is adapted to the first positioning groove (2). The upper surface of the first buffer pad (3) is provided with a second positioning groove (8), and the bottom of the second buffer pad (4) is adapted to the second positioning groove (8).

3. A rail vibration damping fastener device according to claim 2, characterized in that: The bottom of the second positioning groove (8) has multiple recesses (9) longitudinally formed.

4. The rail vibration damping fastener device according to claim 1, characterized in that: The upper surface of the second buffer pad (4) is symmetrically provided with vertical baffles (10), and a third positioning groove (11) is formed between the two vertical baffles (10). The bottom of the third buffer pad (7) and the bottom of the rail (6) are both installed at the bottom of the third positioning groove (11).

5. A rail vibration damping fastener device according to claim 4, characterized in that: The second locking component includes a locking bolt (12) and a pad (13). The threaded portion of the locking bolt (12) passes through the buckle plate (5) and the pad (13) in sequence and is threadedly connected to the second buffer pad (4), the first buffer pad (3) and the sleeper (1).

6. A rail vibration damping fastener device according to claim 5, characterized in that: The upper surface of the second buffer pad (4) is symmetrically provided with limiting grooves (14), and the bottom of the pad (13) is adapted to the limiting grooves (14).

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