Elastic anti-corrosion sealing gasket for high-speed railway track

Abstract

The utility model discloses an elastic anti-corrosion sealing gasket for a high-speed railway track, which relates to the field of sealing gaskets, and adopts the technical scheme that the elastic anti-corrosion sealing gasket comprises a sealing gasket main body made of a high-elasticity and high-strength material, and a hollow cavity filled with gas is arranged in the sealing gasket main body; openings in the two ends of the hollow cavity are perpendicular to each other, the opening portion, located at the bottom of the sealing gasket body, of the hollow cavity is connected with an elastic air cushion in a communicated mode, and the opening portion of the other end of the hollow cavity is connected with an auxiliary telescopic air bag in a communicated mode. When the sealing gasket is inserted, the elastic air cushion is just aligned with the recess in the part, perpendicular to the insertion direction of the sealing gasket, in the long-strip gap, and then the auxiliary telescopic air bag is compressed, so that the accommodating space of air in the hollow cavity is reduced, the air can enter the elastic air cushion through the hollow cavity to support the elastic air cushion, and the recess is sealed.

Description

Technical Field

[0001] The utility model relates to the field of sealing gaskets, and more specifically, to an elastic anti-corrosion sealing gasket for high-speed railway tracks. Background Art

[0002] Elastic, anti-corrosion sealing gaskets play a vital role in high-speed railway track systems. Typically made of highly elastic rubber, they possess excellent elasticity and can effectively absorb the vibration and impact experienced by high-speed trains, thereby improving track stability and ensuring smooth and safe train travel.

[0003] Some of them are designed in the shape of long strips, so as to adapt to the longitudinal connection parts between the rails and the contact surfaces between the rails and the long strip support structures. They can fully cover the long strip gaps, effectively prevent dust, debris and moisture from entering the interior of the rails, and protect the rail structure from damage. However, there may be depressions on the surface of the long strip gaps on the rails that is perpendicular to the insertion direction of the sealing gasket (in the rail manufacturing process, the influence of factors such as mold precision and processing technology may cause the rail surface to be uneven. For example, in the process of casting or rolling the rails, uneven metal flow and inconsistent cooling speed may cause depressions on the rails), which cannot be covered by the sealing gasket, thereby forming an unsealed cavity, especially the cavity with an upper opening. Rainwater, snow water or rail cleaning water can easily enter from the gap between the sealing gasket and the long strip gap and remain inside and are not easy to discharge, which will accelerate the rust and corrosion of the metal parts of the rail.

[0004] Therefore, in order to solve the above technical problems, the present application proposes an elastic anti-corrosion sealing gasket for high-speed railway tracks. Utility Model Content

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide an elastic anti-corrosion sealing gasket for high-speed railway tracks.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a high-speed railway track elastic anti-corrosion sealing gasket, comprising a sealing gasket body made of a high-elasticity and high-strength material, the interior of the sealing gasket body being provided with a hollow chamber filled with gas, the openings at both ends of the hollow chamber being perpendicular to each other, the opening portion at the bottom of the sealing gasket body being interconnected with an elastic air cushion, and the opening portion at the other end being interconnected with an auxiliary telescopic air bag, the surfaces of the sealing gasket body, the elastic air cushion and the auxiliary telescopic air bag being sprayed with a protective coating; the surface of the sealing gasket body being installed with a threaded component for fixing the auxiliary telescopic air bag when it is compressed.

[0007] Preferably, the threaded assembly includes a fixing plate fixed on the surface of the auxiliary telescopic airbag, and connecting plates fixed on both sides of the front end of the sealing gasket body, and the surfaces of the connecting plates are fixedly connected with screws, and through holes for the screws to pass through are opened on both sides of the fixing plate, and a nut is threadedly connected on the outer side wall of the screw.

[0008] Preferably, an inflation port is installed on the top of the auxiliary telescopic airbag, and the inflation port is sealed by a sealing cover. The sealing cover can be removed to inject a sufficient amount of gas into the hollow chamber through the inflation port.

[0009] Preferably, the sealing gasket body is made of nitrile rubber material. Nitrile rubber is a synthetic rubber formed by copolymerization of butadiene and acrylonitrile, and has good elasticity and high hardness.

[0010] Preferably, the surfaces of the sealing gasket body, the elastic air cushion and the auxiliary telescopic airbag are all sprayed with anti-corrosion coating.

[0011] Preferably, the anti-corrosion coating is a polyurethane anti-corrosion coating, which has good weather resistance, can resist the influence of ultraviolet radiation, moisture and temperature changes, and has good wear resistance, which can improve the overall corrosion resistance of the sealing gasket.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. The utility model first pulls open the auxiliary telescopic airbag, thereby expanding the overall space of the hollow chamber, making it difficult for the gas inside it to support the elastic air cushion, thereby preventing it from blocking the smooth insertion of the sealing gasket body into the long strip gap, and then inserting the sealing gasket into the long strip gap on the track that needs to be sealed. After insertion, the elastic air cushion is exactly aligned with the depression on the part of the long strip gap that is perpendicular to the insertion direction of the sealing gasket, and then the auxiliary telescopic airbag is compressed, thereby reducing the internal gas accommodation space of the hollow chamber. The gas can enter the elastic air cushion through the hollow chamber to support it, thereby sealing the depression, so as to solve the problem in the background technology that there may be a depression in the part of the long strip gap on the track that is perpendicular to the insertion direction of the sealing gasket, which cannot be covered by the sealing gasket.

[0014] 2. The utility model fixes the state of the auxiliary telescopic airbag when it is compressed. At this time, the fixing plate is very close to the front end of the sealing gasket body and covers most of the surface to protect it from being scratched by flying stones, which ultimately causes damage to the sealing gasket body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

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

[0017] Figure 2 For this utility model Figure 1 A magnified view of the local structure of;

[0018] Figure 3 This is a schematic diagram of the hollow chamber connection structure of the utility model.

[0019] In the figure: 1. Sealing gasket body; 2. Hollow chamber; 3. Threaded assembly; 301. Fixing plate; 302. Connecting plate; 303. Screw; 304. Through hole; 4. Elastic air cushion; 5. Auxiliary telescopic airbag; 6. Sealing cover. DETAILED DESCRIPTION

[0020] like Figure 1-3 As shown, the utility model provides an elastic anti-corrosion sealing gasket for high-speed railway tracks, including a sealing gasket body 1 made of a highly elastic and high-strength material. The sealing gasket body 1 is provided with a hollow chamber 2 filled with gas. The openings at both ends of the hollow chamber 2 are perpendicular to each other. The opening at the bottom of the sealing gasket body 1 is interconnected with an elastic air cushion 4, and the opening at the other end is interconnected with an auxiliary telescopic airbag 5. The surfaces of the sealing gasket body 1, the elastic air cushion 4, and the auxiliary telescopic airbag 5 are all sprayed with a protective coating; a threaded component 3 is mounted on the surface of the sealing gasket body 1 to fix the auxiliary telescopic airbag 5 when it is compressed.

[0021] Wherein, the sealing gasket body 1 is made of nitrile rubber material, and nitrile rubber is a kind of synthetic rubber, is formed by copolymerization of butadiene and acrylonitrile, and it has good elasticity and higher hardness.Good elasticity effectively absorbs the vibration and the impact produced in the train running process, and higher hardness makes the nitrile rubber sealing gasket, when bearing train load and track internal pressure, can keep the shape stability of itself.When high-speed train frequently passes through, the pressure change in track is larger, if the sealing gasket hardness is not enough, may be excessively squeezed and deformed, cause sealing failure, thereby can be well adapted to high-speed railway track, the surface of the sealing gasket body 1, elastic air cushion 4 and auxiliary telescopic air bag 5 is all sprayed with anti-corrosion coating, anti-corrosion coating is preferably polyurethane anti-corrosion coating, polyurethane anti-corrosion coating weatherability is good, can resist the influence of ultraviolet radiation, moisture and temperature change, and has good wear resistance, can improve the corrosion resistance of the sealing gasket overall structure.

[0022] During use, the auxiliary telescopic airbag 5 is first pulled open, thereby expanding the overall space of the hollow chamber 2, making it difficult for the gas inside it to support the elastic air cushion 4, thereby preventing it from blocking the smooth insertion of the sealing gasket body 1 into the long strip gap. Then, the sealing gasket is inserted into the long strip gap on the track that needs to be sealed. After insertion, the elastic air cushion 4 is exactly aligned with the depression on the surface perpendicular to the insertion direction of the sealing gasket in the long strip gap (it should be noted that the elastic air cushion 4 is designed in advance with reference to the shape of the depression and is only processed later. When it is fully supported by the gas, it can adhere to the inner surface of the depression. If there are multiple small depressions, the elastic air cushion 4 can also be divided into multiple small blocks and interconnected with the hollow chamber 2). Then, the auxiliary telescopic airbag 5 is compressed, thereby reducing the internal gas storage space of the hollow chamber 2. The gas can enter the elastic air cushion 4 through the hollow chamber 2 to support it, thereby sealing the depression. Then, the auxiliary telescopic airbag 5 is fixed in the compressed state by the threaded assembly 3.

[0023] The specific structure of the threaded assembly 3 is as follows: the threaded assembly 3 includes a fixing plate 301 fixed on the surface of the auxiliary telescopic airbag 5, and a connecting plate 302 fixed on both sides of the front side end of the sealing gasket body 1, and the surface of the connecting plate 302 is fixedly connected with a screw 303, and through holes 304 for the screw 303 to pass through are opened on both sides of the fixing plate 301, and a nut is threadedly connected on the outer wall of the screw 303. When the auxiliary telescopic airbag 5 needs to be compressed, the fixing plate 301 can be pushed toward the sealing gasket body 1 to compress the auxiliary telescopic airbag 5. During the compression process, the fixing plate 301 The through hole 304 on the upper surface slowly passes through the screw 303 on the connecting plate 302, and then turns clockwise to the nut to install the nut on the screw 303, and then tightens the nut to fix its state when the auxiliary telescopic airbag 5 is compressed. At this time, the fixing plate 301 is very close to the front side end of the sealing gasket body 1 (only the auxiliary telescopic airbag 5 in the compressed state is separated in the middle, and the front side end of the sealing gasket body 1 is the surface exposed to the outside world, and the other surfaces are inserted into the gap), and most of the surface is blocked to protect it from being scratched by flying stones, which eventually leads to damage to the sealing gasket body 1.

[0024] Furthermore, an inflation port is installed on the top of the auxiliary telescopic airbag 5, and the inflation port is sealed by a sealing cover 6. In the later stage, when part of the gas in the auxiliary telescopic airbag 5 permeates through the material, resulting in insufficient gas inside the hollow chamber 2 (causing the elastic air cushion 4 to be unable to adhere tightly to the inner surface of the recess), the sealing cover 6 can be removed to inject a sufficient amount of gas into the hollow chamber 2 through the inflation port.

[0025] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Any ordinary technician in this industry can smoothly implement the present invention as shown in the drawings and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with this profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the scope of protection of the technical solution of the present invention.

Claims

1. A high-speed railway track elastic anti-corrosion sealing gasket, comprising a sealing gasket body (1) made of a high-elasticity and high-strength material, characterized in that: The sealing gasket body (1) is provided with a hollow chamber (2) filled with gas inside, the openings at both ends of the hollow chamber (2) are perpendicular to each other, the opening located at the bottom of the sealing gasket body (1) is interconnected with an elastic air cushion (4), and the opening at the other end is interconnected with an auxiliary telescopic air bag (5), and the surfaces of the sealing gasket body (1), the elastic air cushion (4) and the auxiliary telescopic air bag (5) are sprayed with a protective coating; the surface of the sealing gasket body (1) is installed with a threaded component (3) for fixing the auxiliary telescopic air bag (5) when it is compressed.

2. The high-speed railway track elastic anti-corrosion sealing gasket according to claim 1, characterized in that: The threaded assembly (3) comprises a fixing plate (301) fixed on the surface of the auxiliary telescopic airbag (5), and connecting plates (302) fixed on both sides of the front end of the sealing gasket body (1), wherein screw rods (303) are fixedly connected to the surfaces of the connecting plates (302), through holes (304) for the screw rods (303) to pass through are formed on both sides of the fixing plate (301), and nuts are threadedly connected to the outer side walls of the screw rods (303).

3. The high-speed railway track elastic anti-corrosion sealing gasket according to claim 1, characterized in that: An inflation port is installed on the top of the auxiliary telescopic airbag (5), and the inflation port is sealed by a sealing cover (6).

4. The high-speed railway track elastic anti-corrosion sealing gasket according to claim 1, characterized in that: The sealing gasket body (1) is made of nitrile rubber material.

5. The high-speed railway track elastic anti-corrosion sealing gasket according to claim 1, characterized in that: The surfaces of the sealing gasket body (1), the elastic air cushion (4) and the auxiliary telescopic airbag (5) are all sprayed with anti-corrosion paint.

6. The high-speed railway track elastic anti-corrosion sealing gasket according to claim 5, characterized in that: The anti-corrosion coating is a polyurethane anti-corrosion coating.

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