A rail insulation pad for preventing stray current

Abstract

This utility model relates to the field of rail insulation technology and discloses a rail insulation pad for preventing stray current, comprising a pad body and a protective isolation structure. The pad body is disposed between the rail pad plate and the rail for insulation of the bottom of the rail. The upper surface of the pad body is bonded to the bottom surface of the rail, and the lower surface of the pad body is bonded to the upper surface of the rail pad plate. The protective isolation structure is disposed on the outside of the pad body and in contact with the side of the rail. By setting the protective isolation structure, the first vertical part, the second vertical part, and the horizontal part of the protective isolation structure form a first isolation cavity, and the pad body and the first vertical part of the protective isolation structure form a second isolation cavity. This allows for a tight fit to the complex shape of the rail waist and surrounding area, providing complete coverage of the rail and eliminating insulation gaps caused by areas that cannot be covered. This effectively avoids the possibility of stray current leakage from these areas and greatly improves the overall insulation effect of the rail.

Description

Technical Field

[0001] This utility model relates to the field of rail insulation technology, and in particular to a rail insulation pad for preventing stray current. Background Technology

[0002] In rail transit systems, the prevention of stray currents is a crucial task. Stray currents are currents that should flow in a designated circuit but deviate from their intended path due to various reasons, flowing into the surrounding soil, metal structures, or other unintended conductors. In the rail transit field, rails typically serve as the return conductor for train operation; however, because the rails are not completely insulated from the ground, some of the current generated during train operation leaks into the surrounding environment, forming stray currents.

[0003] Currently, the industry standard practice is to install insulating sleeves between the rails and rail pads. These sleeves wrap around the rails to improve their electrical insulation performance. The insulating sleeves are typically made of materials with good insulating properties, such as rubber or plastic. They are placed on critical parts of the rail, such as rail joints and connections to the track bed or other metal structures, to increase the resistance between the rail and its surroundings and reduce stray current leakage. This method can improve the electrical insulation performance of the rails to a certain extent and plays a role in preventing stray current leakage.

[0004] However, there are often some areas on the rails that cannot be covered, and the existing insulating sleeves cannot provide effective insulation for them. This can lead to stray current leakage channels in these areas, reducing the overall insulation effect.

[0005] Therefore, a new technical solution needs to be researched to address the above problems. Utility Model Content

[0006] In view of this, the present invention addresses the deficiencies of the existing technology, and its main purpose is to provide a rail insulation pad for preventing stray current.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A rail insulation pad for preventing stray current includes a pad body and a protective isolation structure; the pad body is disposed between the rail pad plate and the rail for insulation of the bottom of the rail; the upper surface of the pad body is bonded to the bottom surface of the rail, and the lower surface of the pad body is bonded to the upper surface of the rail pad plate; the protective isolation structure is disposed on the outside of the pad body and in contact with the side of the rail.

[0009] As further explained, the protective isolation structure includes a first vertical part, a second vertical part, and a horizontal part; the middle part of the first vertical part is fixedly connected to the outside of the pad; the second vertical part is disposed on one side of the first vertical part; the horizontal part is disposed at the bottom end of the first vertical part and the second vertical part, and is respectively connected to the bottom end of the first vertical part and the second vertical part.

[0010] As further explained, a first isolation cavity is formed between the first vertical part, the second vertical part, and the horizontal part; a second isolation cavity is formed between the first vertical part and the pad body.

[0011] As further explained, the surfaces of the first vertical part, the second vertical part, and the horizontal part are respectively provided with a hydrophobic coating to prevent the adhesion of oil stains or water; the hydrophobic coating is made of fluorine-containing or silicon-containing materials.

[0012] As further explained, the height of the protrusion of the first vertical part is higher than or equal to the height of the web of the rail; the height of the protrusion of the second vertical part is higher than or equal to the height of the web of the rail.

[0013] As further explained, the first vertical part, the second vertical part, and the horizontal part are integrally formed; the first vertical part is integrally formed with the pad body; the thickness of the first vertical part, the second vertical part, and the horizontal part is 0.1-3mm.

[0014] As further explained, the thickness of the pad is 0.1-2 mm; the pad is made of rubber, plastic or rubber-plastic material.

[0015] As further explained, the pad body has downwardly extending reinforcing parts at both ends; the reinforcing parts have connecting holes; and the connecting holes have connecting parts for connecting with the rail pad plate.

[0016] As further explained, the bottom surface of the pad is provided with multiple sets of downwardly protruding limiting strips; the limiting strips are engaged with the surface of the rail pad.

[0017] As further explained, the top surface of the pad is provided with multiple sets of inwardly recessed liquid guiding grooves; the multiple sets of liquid guiding grooves form a liquid delivery channel for drainage.

[0018] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution:

[0019] 1. By setting up a protective isolation structure, the first vertical part, the second vertical part, and the horizontal part of the protective isolation structure form a first isolation cavity, and the pad body and the first vertical part of the protective isolation structure form a second isolation cavity. This can closely fit the complex shape of the rail web and its surroundings, fully cover the rail, eliminate the insulation blank areas caused by the inability to cover it, effectively avoid the possibility of stray current leakage from these parts, and greatly improve the overall insulation effect of the rail.

[0020] 2. By setting the height of the first and second vertical sections to be higher than or equal to the height of the rail web, the rail web is effectively isolated from the surrounding environment, eliminating the insulation blank areas caused by the inability to wrap the rail, effectively avoiding the possibility of stray current leakage from these parts, and greatly improving the overall insulation effect of the rail. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A schematic diagram of the overall structure of a rail insulation pad for preventing stray current provided by this utility model;

[0023] Figure 2 A schematic diagram of the internal structure of a rail insulation pad for preventing stray current provided by this utility model;

[0024] Figure 3 A partial structural schematic diagram of a rail insulation pad for preventing stray current provided by this utility model;

[0025] Figure 4 A schematic diagram of the first assembly of the rail insulation pad and the rail provided by this utility model;

[0026] Figure 5 This is a schematic diagram of a second assembly of the rail insulation pad and the rail provided by this utility model.

[0027] The following are the labeling elements in the figure:

[0028] 10. Pad; 11. Reinforcing section; 111. Connecting hole; 12. Limiting strip; 13. Liquid guiding groove;

[0029] 20. Protective isolation structure; 21. First vertical section; 22. Second vertical section; 23. Horizontal section;

[0030] 30. Rail; 31. Rail pad; 32. Gauge block. Detailed Implementation

[0031] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0032] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0033] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0035] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0036] In one embodiment of this utility model, such as Figure 1-5 As shown, a rail insulation pad for preventing stray currents is provided, comprising a pad body 10 and a protective isolation structure 20. The pad body 10 is disposed between a rail pad plate 31 and a rail 30 for insulating the bottom of the rail 30. The upper surface of the pad body 10 is in contact with the bottom surface of the rail 30, and the lower surface of the pad body 10 is bonded to the upper surface of the rail pad plate 31. The protective isolation structure 20 is disposed on the outside of the pad body 10 and contacts the side of the rail 30.

[0037] In this embodiment, the upper surface of the pad 10 is bonded to the bottom surface of the rail 30, and the lower surface of the pad 10 is bonded to the upper surface of the rail pad 31. This design allows the pad 10 and the rail 30 to achieve insulation protection at the bottom of the rail without the need for adhesive. Compared with the traditional method of adhesively bonding the insulating sleeve to the rail, the installation and removal of the pad 10 is simpler and faster, which can significantly shorten the installation time. At the same time, it avoids the phenomenon that the adhesive sleeve and the rail 30 may become unstable after the adhesive ages, thereby improving the insulation protection effect of the pad 10.

[0038] By setting up a protective isolation structure 20, the first vertical part 21, the second vertical part 22, and the horizontal part 23 in the protective isolation structure 20 form a first isolation cavity, and the pad 10 and the first vertical part 21 in the protective isolation structure 20 form a second isolation cavity. This can closely fit the complex shape of the waist and surrounding area of ​​the rail 30, fully cover the rail 30, eliminate the insulation blank areas caused by the inability to cover it, effectively avoid the possibility of stray current leakage from these parts, and greatly improve the overall insulation effect of the rail 30.

[0039] By setting the height of the first vertical part 21 and the second vertical part 22 to be higher than or equal to the height of the waist of the rail 30, the effective isolation of the waist of the rail 30 from the surrounding environment is ensured, eliminating the insulation blank area caused by the inability to wrap, effectively avoiding the possibility of stray current leakage from these parts, and greatly improving the overall insulation effect of the rail 30.

[0040] Preferably, the protective isolation structure 20 includes a first vertical portion 21, a second vertical portion 22, and a horizontal portion 23. The middle portion of the first vertical portion 21 is fixedly connected to the outside of the pad 10. The second vertical portion 22 is located on one side of the first vertical portion 21. The horizontal portion 23 is located at the bottom ends of the first vertical portion 21 and the second vertical portion 22, and is connected to the bottom ends of the first vertical portion 21 and the second vertical portion 22, respectively. By forming an isolation protection zone between the first vertical portion 21, the second vertical portion 22, and the horizontal portion 23, oil and dust can be effectively isolated, greatly improving the reliability of the insulation of the rail 30.

[0041] In this embodiment, the first vertical part 21, the second vertical part 22 and the horizontal part 23 are preferably arranged vertically, forming a right-angle structure, which can effectively isolate oil and dust and greatly improve the reliability of the insulation of the rail 30.

[0042] Furthermore, a first isolation cavity is formed between the first vertical portion 21, the second vertical portion 22, and the horizontal portion 23. A second isolation cavity is formed between the first vertical portion 21 and the pad body 10. By setting the first and second isolation cavities, the insulation performance of the insulating pad for the web and surrounding area of ​​the rail 30 is further enhanced, which can prevent the conduction of current between different components, effectively block the flow path of stray current, and greatly improve the reliability of the insulation of the rail 30.

[0043] Furthermore, the surfaces of the first vertical portion 21, the second vertical portion 22, and the horizontal portion 23 are respectively provided with a hydrophobic coating to prevent the adhesion of oil stains or water. The hydrophobic coating is made of fluorine-containing or silicon-containing materials, such as polyurethane, acrylate, polyurea, epoxy coating, etc., which gives the hydrophobic coating oil-repellent and water-repellent properties, preventing the adhesion of oil stains or water. At the same time, it can quickly drain liquids, keeping the surface of the insulating structure dry and clean, avoiding insulation failure caused by liquid, and improving the insulation stability of the insulating pad under different environmental conditions.

[0044] Furthermore, the protrusion height of the first vertical portion 21 is higher than or equal to the waist height of the rail 30. The protrusion height of the second vertical portion 22 is higher than or equal to the waist height of the rail 30. By setting the protrusion heights of the first vertical portion 21 and the second vertical portion 22 to be higher than or equal to the waist height of the rail 30, the waist of the rail 30 can be completely covered, preventing stray current from leaking from the gap between the waist of the rail 30 and the insulating pad, thus further improving the overall insulation effect.

[0045] In this embodiment, a gauge block 32 that is tightly connected to the rail 30 is provided on one side of the protective isolation structure 20, and the gauge block 32 is distributed in parallel with the protective isolation structure 20.

[0046] like Figure 4 As shown, when the protrusion height of the first vertical part 21 and the second vertical part 22 is equal to the waist height of the rail 30, the first vertical part 21 and the second vertical part 22 form a protective isolation baffle, which plays the role of isolating oil and dust, and improves the insulation protection effect of the protective isolation structure 20.

[0047] like Figure 5 As shown, when the protrusion height of the first vertical part 21 and the second vertical part 22 is higher than the waist height of the rail 30, and the top of the first vertical part 21 extends toward the inside of the rail 30 to partially wrap the waist of the rail 30, while the top of the second vertical part 22 and the side of the gauge block 32 can form a better isolation protection zone, avoiding interference between the two and improving the insulation protection effect of the protective isolation structure 20.

[0048] Furthermore, the first vertical portion 21, the second vertical portion 22, and the horizontal portion 23 are integrally formed. The first vertical portion 21 is integrally formed with the pad body 10. The thickness of the first vertical portion 21, the second vertical portion 22, and the horizontal portion 23 is 0.1-3mm. Through the design of the first vertical portion 21, the second vertical portion 22, and the horizontal portion 23 being integrally formed, as well as the design of the first vertical portion 21 being integrally formed with the pad body 10, the insulating pad structure is more stable, the connections between the parts are tight, there are no gaps or weak points, and it can be ensured that the insulating pad will not affect its insulation performance due to loosening or displacement between components.

[0049] Preferably, the thickness of the pad 10 is 0.1-2 mm. The pad 10 is made of rubber, plastic, or rubber-plastic materials, such as silicone rubber, EPDM, natural rubber, PA, PP, etc. By using rubber, plastic, or rubber-plastic materials for the pad 10, it has good elasticity and flexibility, and can closely fit the bottom of the rail pad 31 and the rail 30, providing stable support and insulation. At the same time, the rubber material has good aging resistance, and can maintain the stability of its physical and chemical properties during long-term use, ensuring the long-lasting and effective insulation effect of the insulating pad.

[0050] Preferably, the pad body 10 has downwardly extending reinforcing portions 11 at both ends. Each reinforcing portion 11 has a connecting hole 111. A connector for connecting to the rail pad is provided within the connecting hole. In this embodiment, the connector can be a physical fastener such as a screw or clip. The physical connection between the connector and the rail pad 31 effectively increases the connection strength between the insulating pad and the rail pad 31, preventing the insulating pad from loosening or shifting due to vibration and impact during train operation. This ensures a tight fit between the pad body 10 and the bottom of the rail 30, reduces the impact of installation errors on insulation performance, and improves the overall insulation effect.

[0051] In other embodiments, the connector can also be glued, so that the reinforcing part 11 and the side of the rail pad 31 are fixedly connected by the glue, which effectively increases the connection strength between the insulating pad and the rail pad 31, so that the insulating pad will not loosen or shift due to vibration and impact during train operation, and ensures a tight fit between the pad body 10 and the bottom of the rail 30.

[0052] Preferably, the bottom surface of the pad 10 is provided with multiple sets of downwardly protruding limiting strips 12. The limiting strips 12 are engaged with the surface of the rail pad 31. In this embodiment, the top surface of the rail pad 31 is provided with multiple sets of limiting grooves that engage with the limiting strips 12, and the limiting strips 12 and the limiting grooves can be tightly connected. By setting the limiting strips 12, the insulating pad can be quickly and accurately positioned during installation, ensuring a tight fit between the pad 10 and the rail pad 31, and avoiding possible offset or misalignment during installation. At the same time, the limiting strips 12 can also prevent the insulating pad from moving horizontally during use, further improving the stability of installation and the reliability of insulation, and improving the insulation effect of the rail 30.

[0053] Furthermore, the top surface of the pad 10 is provided with multiple sets of inwardly recessed liquid guiding grooves 13. These multiple sets of liquid guiding grooves 13 form a liquid delivery channel for drainage. During train operation, water or oil may accumulate on the surface of the rail 30. The liquid guiding grooves 13 can guide these liquids out in a timely manner, preventing liquid accumulation on the surface of the rail 30. This not only helps maintain the cleanliness of the rail 30 surface but also prevents liquid from corroding the insulating pad, ensuring the insulation performance of the insulating pad and improving the insulation reliability of the rail 30 under different environmental conditions. The above is merely a preferred embodiment of this utility model, specifically describing the technical principles of this utility model. These descriptions are only for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model, as well as other specific embodiments of this utility model that can be conceived by those skilled in the art without creative effort, should be included within the scope of protection of this utility model.

Claims

1. A rail insulation pad for preventing stray current, characterized in that, include: A pad, which is disposed between the rail pad plate and the rail, is used for insulation of the bottom of the rail; The upper surface of the pad is attached to the bottom surface of the rail, and the lower surface of the pad is bonded to the upper surface of the rail pad plate. A protective isolation structure is provided on the outside of the pad body and in contact with the side of the rail.

2. The rail insulation pad for preventing stray current according to claim 1, characterized in that, The protective isolation structure includes a first vertical part, a second vertical part, and a horizontal part; the middle part of the first vertical part is fixedly connected to the outside of the pad; the second vertical part is located on one side of the first vertical part; the horizontal part is located at the bottom of the first vertical part and the second vertical part, and is connected to the bottom of the first vertical part and the second vertical part, respectively.

3. The rail insulation pad for preventing stray current according to claim 2, characterized in that, A first isolation cavity is formed between the first vertical part, the second vertical part, and the horizontal part; a second isolation cavity is formed between the first vertical part and the pad body.

4. The rail insulation pad for preventing stray current according to claim 3, characterized in that, The surfaces of the first vertical part, the second vertical part, and the horizontal part are respectively provided with a hydrophobic coating to prevent oil stains or water from adhering; the hydrophobic coating is made of fluorine-containing or silicon-containing materials.

5. The rail insulation pad for preventing stray current according to claim 3 or 4, characterized in that, The height of the first vertical part is higher than or equal to the height of the rail web; the height of the second vertical part is higher than or equal to the height of the rail web.

6. The rail insulation pad for preventing stray current according to claim 3 or 4, characterized in that, The first vertical part, the second vertical part, and the horizontal part are integrally formed; the first vertical part is integrally formed with the pad body; the thickness of the first vertical part, the second vertical part, and the horizontal part is 0.1-3mm.

7. The rail insulation pad for preventing stray current according to claim 1, characterized in that, The thickness of the pad is 0.1-2 mm; the pad is made of rubber, plastic or rubber-plastic material.

8. The rail insulation pad for preventing stray current according to claim 1, characterized in that, The pad body has downwardly extending reinforcing parts at both ends; the reinforcing parts have connecting holes; and the connecting holes have connecting parts that connect to the rail pad plate.

9. The rail insulation pad for preventing stray current according to claim 1, characterized in that, The bottom surface of the pad is provided with multiple sets of downward protruding limiting strips; the limiting strips are engaged with the surface of the rail pad.

10. The rail insulation pad for preventing stray current according to claim 9, characterized in that, The top surface of the pad is provided with multiple sets of inwardly recessed liquid guiding grooves; the multiple sets of liquid guiding grooves form a liquid delivery channel for drainage.

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