Rail transit rubber connecting piece structure

Abstract

This utility model discloses a rubber connector structure for rail transit, including a rubber pad body with side edges on both sides. The connection between the rubber pad body and the side edges is arc-shaped. From top to bottom, the rubber pad body includes an outer protective layer, a buffer layer, and an inner wear-resistant layer. The buffer layer includes, from top to bottom, a honeycomb damping layer, a shear energy dissipation layer, and a core elastic layer. This utility model improves the buffering effect of the rubber pad body through the multi-layered buffer layer. The honeycomb damping layer further enhances the buffering effect, and the nylon fiber mesh inside the shear energy dissipation layer strengthens the lateral shear resistance. The increasing gradient of the honeycomb pore size from the outside to the inside achieves segmented filtering of vibration frequencies. The core elastic layer ensures that the buffer layer automatically returns to its original shape after severe deformation, preventing permanent deformation.

Description

Technical Field

[0001] This utility model relates to the technical field of track rubber connectors, specifically a structure of a rubber connector for rail transit. Background Technology

[0002] Rubber connectors used in rail transit are often used as buffer pads between sleepers and tracks. With the rapid development of urban rail transit, train speeds are gradually increasing. As train speeds increase, the requirements for buffer pads also increase. Their main function is to buffer vibrations during train operation, while also reducing noise.

[0003] However, existing technologies still have significant shortcomings, such as:

[0004] Existing rubber connectors are often simply made of one or more layers of rubber pads. However, during use, the buffering and rebound effects of existing rubber connectors are often insufficient. Therefore, we propose a new structure for rubber connectors used in rail transit. Utility Model Content

[0005] The purpose of this utility model is to provide a rubber connector structure for rail transit to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A rubber connector structure for rail transit includes a rubber pad body, with side edges on both sides of the rubber pad body, and the connection between the rubber pad body and the side edges is arc-shaped.

[0008] The rubber pad body comprises, from top to bottom, an outer protective layer, a buffer layer, and an inner wear-resistant layer;

[0009] The buffer layer comprises, from top to bottom, a honeycomb damping layer, a shear energy dissipation layer, and a core elastic layer. The honeycomb damping layer and the core elastic layer have the same thickness, and the thickness of the core elastic layer is not less than one-third of the thickness of the rubber pad body.

[0010] Preferably, the thickness of the honeycomb damping layer and the core elastic layer is not less than 15 mm, and the thickness of the shear energy dissipation layer is not less than 10 mm.

[0011] Preferably, the outer protective layer has corrugated protrusions on its surface, and both the outer protective layer and the inner wear-resistant layer are fluororubber layers.

[0012] Preferably, the thickness of the honeycomb damping layer and the core elastic layer is 15 mm, and the thickness of the shear energy dissipation layer is 10 mm.

[0013] Preferably, the honeycomb damping layer has a plurality of honeycombs inside, the spacing between the honeycombs decreasing from the sides to the middle, and the honeycomb aperture increasing from the outside to the inside.

[0014] Preferably, the shear energy dissipation layer is embedded with an obliquely arranged nylon fiber mesh, wherein the nylon fiber mesh is arranged at a 45-degree angle.

[0015] Preferably, the thickness of the outer protective layer and the inner wear-resistant layer is 3 mm.

[0016] Preferably, the honeycomb damping layer is a foamed silicone rubber layer, and the core elastic layer is a shape memory polyurethane layer.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. By setting multiple layers of buffer layer, the buffering effect of the rubber pad body is improved. At the same time, the buffering effect is further improved by setting honeycomb damping layer. The honeycomb cavity structure can absorb high-frequency vibration energy and reduce noise. The nylon fiber mesh inside the shear energy dissipation layer enhances the lateral shear resistance. Meanwhile, the gradient increase of honeycomb pore size from the outside to the inside achieves the effect of segmented filtering of vibration frequency.

[0019] 2. By setting the core elastic layer, the buffer layer is guaranteed to automatically return to its original shape after severe deformation, preventing permanent deformation. Attached Figure Description

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

[0021] Figure 2 This is a schematic diagram of the main structure of the rubber pad of this utility model;

[0022] Figure 3 This is a top view of the outer protective layer of this utility model;

[0023] Figure 4 This is a schematic diagram of the buffer layer structure of this utility model.

[0024] In the diagram: 1. Rubber pad body; 11. Outer protective layer; 12. Buffer layer; 121. Honeycomb damping layer; 122. Shear energy dissipation layer; 123. Core elastic layer; 13. Inner wear-resistant layer; 2. Side; 3. Corrugated protrusions; 4. Honeycomb; 5. Nylon fiber mesh. 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 1-4 This utility model provides a technical solution:

[0027] A rubber connector structure for rail transit includes a rubber pad body 1 with side edges 2 on both sides. The rubber pad body 1 serves as the main buffer and is the main body of the device. The side edges 2 are symmetrically arranged, which facilitates the placement of the main body on the sleeper and provides a certain degree of anti-falling effect. The connection between the rubber pad body 1 and the side edges 2 is arc-shaped, and the arc-shaped design of the connection makes the corner fit the sleeper better.

[0028] The rubber pad body 1 includes an outer protective layer 11, a buffer layer 12, and an inner wear-resistant layer 13 from top to bottom. The outer protective layer 11 has corrugated protrusions 3 on its surface. Both the outer protective layer 11 and the inner wear-resistant layer 13 are fluororubber layers, and the thickness of the outer protective layer 11 and the inner wear-resistant layer 13 is 3 mm.

[0029] In this embodiment, the rubber pad body 1 is provided with 3 layers. The outer protective layer 11 and the inner wear-resistant layer 13 are both made of fluororubber, which can resist ultraviolet rays and external mechanical wear, and protect the buffer layer 12. The corrugated protrusions 3 on the surface of the outer protective layer 11 can disperse the stress of impact.

[0030] The buffer layer 12, from top to bottom, includes a honeycomb damping layer 121, a shear energy dissipation layer 122, and a core elastic layer 123. The honeycomb damping layer 121 contains several honeycomb cells 4, with the spacing between the cells decreasing from the sides to the center. In this embodiment, considering that the pressure is most concentrated in the center of the buffer layer 12, the honeycomb cells 4 in the center of the honeycomb damping layer 121 are arranged more densely, which can achieve better buffering, energy absorption, and noise reduction effects. The honeycomb aperture increases from the outside to the inside; this gradual increase in aperture allows for segmented filtering of vibration frequencies. The honeycomb damping layer 121 and the core elastic layer 123 have the same thickness. The thickness of 23 is not less than one-third of the thickness of the rubber pad body 1. In this embodiment, the thickness of the core elastic layer 123 is not less than one-third of the thickness of the rubber pad body 1. The limitation of its thickness ensures its buffering effect. The core elastic layer 123 is the main layer of the buffer layer 12, which plays the most important buffering role. At the same time, the thickness of the honeycomb damping layer 121 also ensures the buffering effect of the main body. The thickness of the honeycomb damping layer 121 and the core elastic layer 123 is not less than 15 mm, and the thickness of the shear energy dissipation layer 122 is not less than 10 mm. The thickness of the honeycomb damping layer 121 and the core elastic layer 123 is 15 mm, and the thickness of the shear energy dissipation layer 122 is 10 mm.

[0031] The shear energy dissipation layer 122 is embedded with diagonally arranged nylon fiber mesh 5, which is arranged at a 45-degree angle. The nylon fiber mesh 5 is embedded inside the shear energy dissipation layer 122, and the 45-degree angle arrangement of the nylon fiber mesh 5 enhances the lateral shear resistance. The honeycomb damping layer 121 is a foamed silicone rubber layer, and the core elastic layer 123 is a shape memory polyurethane layer. The core elastic layer 123 uses a memory material to ensure that the buffer layer 12 and the rubber pad body 1 can better recover after being subjected to pressure and will not undergo permanent deformation. The rubber pad body 1 of this device adopts multi-layer gradient buffering, which improves the buffering effect.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rubber connecting member structure for rail transit, characterized by: It includes a rubber pad body (1), and side edges (2) are provided on both sides of the rubber pad body (1). The connection between the rubber pad body (1) and the side edges (2) is arc-shaped. The rubber pad body (1) includes, from top to bottom, an outer protective layer (11), a buffer layer (12), and an inner wear-resistant layer (13). The buffer layer (12) includes, from top to bottom, a honeycomb damping layer (121), a shear energy dissipation layer (122) and a core elastic layer (123). The honeycomb damping layer (121) and the core elastic layer (123) have the same thickness, and the thickness of the core elastic layer (123) is not less than one-third of the thickness of the rubber pad body (1).

2. The structure of a rubber connector for rail transit according to claim 1, characterized in that: The thickness of the honeycomb damping layer (121) and the core elastic layer (123) is not less than 15 mm, and the thickness of the shear energy dissipation layer (122) is not less than 10 mm.

3. The structure of a rubber connector for rail transit according to claim 1, characterized in that: The outer protective layer (11) has corrugated protrusions (3) on its surface, and both the outer protective layer (11) and the inner wear-resistant layer (13) are fluororubber layers.

4. The structure of a rubber connector for rail transit according to claim 2, characterized in that: The thickness of the honeycomb damping layer (121) and the core elastic layer (123) is 15 mm, and the thickness of the shear energy dissipation layer (122) is 10 mm.

5. The structure of a rubber connector for rail transit according to claim 1, characterized in that: The honeycomb damping layer (121) has a plurality of honeycombs (4) inside, the spacing of the honeycombs (4) decreases from the sides to the middle, and the honeycomb aperture increases from the outside to the inside.

6. The structure of a rubber connector for rail transit according to claim 1, characterized in that: The shear energy dissipation layer (122) is embedded with a diagonally arranged nylon fiber mesh (5), which is arranged at a 45-degree angle.

7. The structure of a rubber connector for rail transit according to claim 1, characterized in that: The outer protective layer (11) and the inner wear-resistant layer (13) are 3 mm thick.

8. The structure of a rubber connector for rail transit according to claim 1, characterized in that: The honeycomb damping layer (121) is a foamed silicone rubber layer, and the core elastic layer (123) is a shape memory polyurethane layer.

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