Insulation wrapping piece for steel rail

Abstract

The utility model relates to the technical field of rail transit, and discloses an insulating wrapping piece for a steel rail, which comprises a wrapping body, the parcel body comprises a bottom surface and a protection surface; the bottom surface is arranged on the bottom surface of the steel rail; the protection surface is arranged outside the bottom surface; an avoiding position is arranged on the protection surface; and a wear-resistant part is arranged on the avoiding position. By adopting the wear-resistant part with a composite structure, the contradiction between the thickness and the bending property is ingeniously solved on the premise of ensuring that the position of the gauge block has enough wear-resistant protection and insulating properties. During installation, the insulation wrapping piece can be easily bent to meet various angle and shape requirements in the fastener installation process, the installation difficulty is greatly reduced, the construction efficiency is improved, rework and material waste caused by the installation problem are reduced, and a powerful guarantee is provided for rapid promotion of a rail transit project.

Description

Technical Field

[0001] This utility model relates to the field of rail transit technology, and in particular to an insulating wrapping component for steel rails. Background Technology

[0002] During train operation, stray currents are generated due to incomplete electrical insulation between the rails and the return system. These stray currents not only cause electrochemical corrosion to the metal structures and equipment in the rail transit system, affecting their service life and operational safety, but may also interfere with nearby buried metal pipelines, communication cables, and other facilities, leading to a series of safety hazards and operational failures. Strengthening the insulation of the rails is a key measure to effectively control stray currents.

[0003] Currently, most rail fastener locations are insulated with insulating wrapping to protect the rails. This insulating wrapping covers the critical contact points between the rail and the fastener, forming an insulating barrier to prevent stray current leakage, thereby ensuring the electrical safety and stable operation of the rail transit system.

[0004] However, in existing technologies, the insulating wrapping at the fastener location often creates a weak point in the insulation due to the avoidance design at the gauge block position. During train operation, the rail is subjected to complex dynamic loads, and this weak point's insulation performance is easily degraded under long-term mechanical friction and vibration, increasing the risk of stray current leakage and failing to effectively guarantee the long-term insulation effect of the rail. To improve the wear resistance and insulation performance of the insulating wrapping at the gauge block position, existing technologies employ a fully enclosed insulating wrapping layer combined with a certain thickness of high-strength, high-wear-resistant plastic composite treatment at the gauge block position.

[0005] However, the bending performance of the plastic layer in the existing insulating wrapping at the gauge block deteriorates as the thickness increases, failing to meet the bending performance requirements of the insulating wrapping during fastener installation, thus preventing smooth installation and use.

[0006] Therefore, a new technical solution needs to be researched to address the above problems. Utility Model Content

[0007] In view of this, the present invention addresses the deficiencies of the existing technology, and its main objective is to provide an insulating wrapping for rails.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] An insulating wrapping for rails includes a wrapping body; the wrapping body includes a bottom surface and a protective surface; the bottom surface is disposed on the bottom surface of the rail; the protective surface is disposed outside the bottom surface and is used to wrap and conform to the outer surfaces of the two sides of the rail.

[0010] The protective surface is provided with a clearance position for the gauge block to avoid; the clearance position is provided with a wear-resistant part for wear protection.

[0011] As further explained, the wear-resistant component includes an inner wear-resistant layer and an outer wear-resistant layer; the inner wear-resistant layer is disposed on the clearance position; the outer wear-resistant layer is disposed on the inner wear-resistant layer; the inner wear-resistant layer and the outer wear-resistant layer form a protective structure, and the outer surface of the protective structure is higher or lower than the outer surface of the protective surface.

[0012] As further explained, the outer wear-resistant layer includes a first outer wear-resistant layer, a second outer wear-resistant layer, and a third outer wear-resistant layer; the first outer wear-resistant layer, the second outer wear-resistant layer, and the third outer wear-resistant layer are arranged side by side on the inner wear-resistant layer;

[0013] The protrusion height of the second outer wear-resistant layer is less than or greater than the protrusion height of the first outer wear-resistant layer and the third outer wear-resistant layer, and the protrusion heights of the first outer wear-resistant layer and the third outer wear-resistant layer are the same or different.

[0014] As further explained, the thickness of the second outer wear-resistant layer is 0-1 mm; the thickness of the first outer wear-resistant layer is 0.1-1.5 mm; and the thickness of the third outer wear-resistant layer is 0.1-1.5 mm.

[0015] As further explained, there is a height difference between the outer surfaces of the first outer wear-resistant layer, the second outer wear-resistant layer and the third outer wear-resistant layer, so that the outer surface of the protective structure has a height difference structure, and the outer surface of the protective structure is higher than the outer surface of the protective surface.

[0016] As further explained, the outer surfaces of the first outer wear-resistant layer, the second outer wear-resistant layer, and the third outer wear-resistant layer are flush with each other, so that the outer surface of the protective structure is planar and the outer surface of the protective structure is lower than the outer surface of the protective surface.

[0017] As further explained, the first outer wear-resistant layer, the second outer wear-resistant layer, and the third outer wear-resistant layer are respectively fixedly connected to the inner wear-resistant layer to form an integrated structure.

[0018] As further explained, the first outer wear-resistant layer, the second outer wear-resistant layer and the third wear-resistant layer are each provided with a first positioning hole; the inner wear-resistant layer is provided with a second positioning hole corresponding to the first positioning hole.

[0019] As further explained, the clearance area is provided with an upwardly protruding isolation strip.

[0020] As a further explanation, the outer edge of the outer wear-resistant layer is provided with an extension that extends upward to the isolation strip; the extension is fixed to the isolation strip by a physical fastener.

[0021] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution:

[0022] By incorporating wear-resistant components, specifically composite-structured wear-resistant parts, the contradiction between thickness and bendability is cleverly resolved while ensuring sufficient wear resistance and insulation at the gauge block location. During installation, the insulating wrapping can be easily bent to adapt to various angles and shapes required during fastener installation, significantly reducing installation difficulty, improving construction efficiency, and minimizing rework and material waste caused by installation problems. This provides strong support for the rapid advancement of rail transit projects. Attached Figure Description

[0023] 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.

[0024] Figure 1 A schematic diagram of the overall structure of an insulating wrapping for rails provided by this utility model from a first angle;

[0025] Figure 2 A schematic diagram of the overall structure of an insulating wrapping for rails provided by this utility model from a second angle;

[0026] Figure 3 A schematic diagram of the internal structure of an insulating wrapping for rails provided by this utility model;

[0027] Figure 4 A schematic diagram of the overall structure of the first embodiment of the wear-resistant part provided by this utility model;

[0028] Figure 5 A schematic diagram of the internal structure of the first embodiment of the wear-resistant part provided by this utility model;

[0029] Figure 6 A schematic diagram of the overall structure of the second embodiment of the wear-resistant part provided by this utility model;

[0030] Figure 7 A schematic diagram of the internal structure of a second embodiment of the wear-resistant part provided by this utility model;

[0031] Figure 8 A schematic diagram of the combined structure of the wear-resistant component and the gauge block provided by this utility model;

[0032] Figure 9 This is a schematic diagram of the structure of the clamping sleeve provided by this utility model.

[0033] The following are the labeling elements in the figure:

[0034] 10. Bottom surface; 11. Protective surface; 111. Clearance area; 112. Isolation strip; 113. Extension; 12. Snap-fit ​​block;

[0035] 20. Wear-resistant parts; 21a. Inner wear-resistant layer; 22a. First outer wear-resistant layer; 23a. Second outer wear-resistant layer; 24a. Third outer wear-resistant layer;

[0036] 30. Track gauge block; 40. First positioning hole. Detailed Implementation

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] In one embodiment of this utility model, such as Figure 1-9 As shown, an insulating wrapping for rails is provided, including a wrapping body. The wrapping body includes a bottom surface 10 and a protective surface 11. The bottom surface 10 is disposed on the bottom surface 10 of the rail. The protective surface 11 is disposed on the outside of the bottom surface 10 and is used to wrap around and conform to the outer surfaces of the two sides of the rail.

[0043] The protective surface 11 is provided with a clearance position 111 for the gauge block 30 to pass. The clearance position 111 is provided with a wear-resistant part 20 for wear protection.

[0044] By incorporating wear-resistant components 20, specifically a composite structure, the inner wear-resistant layer 21a features a stepped structure with varying heights. When the wrapping is bent, the inner wear-resistant layer 21a bends to fit against the arcuate portion of the rail's side, and the outer wear-resistant layer fits against the contact surface of the gauge block 30. This cleverly resolves the conflict between thickness and bendability while ensuring sufficient wear resistance and insulation at the gauge block 30. During installation, the insulating wrapping can be easily bent to accommodate various angles and shapes required during fastener installation, significantly reducing installation difficulty, improving construction efficiency, and minimizing rework and material waste caused by installation problems. This provides a strong guarantee for the rapid advancement of rail transit projects.

[0045] Preferably, the wear-resistant component 20 includes an inner wear-resistant layer 21a and an outer wear-resistant layer. The inner wear-resistant layer 21a is disposed on the clearance position 111. The outer wear-resistant layer is disposed on the inner wear-resistant layer 21a. The inner wear-resistant layer 21a and the outer wear-resistant layer form a protective structure, and the outer surface of the protective structure is higher or lower than the outer surface of the protective surface 11.

[0046] In this embodiment, both the inner wear-resistant layer 21a and the outer wear-resistant layer are made of wear-resistant materials. The wear-resistant materials used may be the same or different materials, such as polyurethane rubber, silicon carbide coating, ceramic fiber reinforced nylon, or a mixture of different wear-resistant materials. In this way, both the inner wear-resistant layer 21a and the outer wear-resistant layer have good wear resistance, which can resist the friction and collision between the rail and the fastener during train operation, reduce the damage of the wear-resistant parts 20 caused by wear, thereby greatly extending the service life of the insulating wrapping and reducing maintenance costs.

[0047] Furthermore, the outer wear-resistant layer includes a first outer wear-resistant layer 22a, a second outer wear-resistant layer 23a, and a third outer wear-resistant layer 24a. The first outer wear-resistant layer 22a, the second outer wear-resistant layer 23a, and the third outer wear-resistant layer 24a are arranged side by side on the inner wear-resistant layer 21a.

[0048] The protrusion height of the second outer wear-resistant layer 23a is less than or greater than the protrusion height of the first outer wear-resistant layer 22a and the third outer wear-resistant layer 24a. The protrusion heights of the first outer wear-resistant layer 22a and the third outer wear-resistant layer 24a are the same or different.

[0049] The outer surface of the protective structure formed between the first outer wear-resistant layer 22a, the second outer wear-resistant layer 23a, the third outer wear-resistant layer 24a, and the inner wear-resistant layer 21a can be formed into a concave-convex structure, a stepped structure, or a planar structure. The specific structure selection can be made according to the actual application, as long as it can meet the insulation and wear resistance of the wear-resistant part 20. At the same time, the thickness of the first outer wear-resistant layer 22a, the second outer wear-resistant layer 23a, and the third outer wear-resistant layer 24a can be adjusted according to the actual wear conditions. The inner wear-resistant layer 21a can adopt a planar structure, a concave-convex structure, or a stepped structure, which can ensure wear resistance and avoid overall thickening, thereby extending the service life.

[0050] Furthermore, the thickness of the second outer wear-resistant layer 23a is 0-1mm. The thickness of the first outer wear-resistant layer 22a is 0.1-1.5mm. The thickness of the third outer wear-resistant layer 24a is 0.1-1.5mm. The inner wear-resistant layer 21a is bent and fitted to the arcuate portion of the side of the rail. Then, the first outer wear-resistant layer 22a, the second outer wear-resistant layer 23a, and the third outer wear-resistant layer 24a are sequentially fitted to the contact surface of the gauge block 30. In other words, the inner wear-resistant layer 21a isolates the gauge block 30 from the rail, providing insulation and wear resistance. Furthermore, the thickness of the first outer wear-resistant layer 22a, the second outer wear-resistant layer 23a, and the third outer wear-resistant layer 24a is adjusted according to actual wear conditions, further improving the wear resistance of the wear-resistant component 20 and reducing damage caused by wear.

[0051] Furthermore, such as Figure 4-5 As shown, in the first configuration of the wear-resistant component 20, specifically, there is a height difference between the outer surfaces of the first outer wear-resistant layer 22a, the second outer wear-resistant layer 23a and the third outer wear-resistant layer 24a, so that the outer surface of the protective structure has a height difference structure, and the outer surface of the protective structure is higher than the outer surface of the protective surface 11. The protective structure with height difference design is used to adapt to the gauge blocks 30 with different contact surface depths, achieving performance grading. The inner wear-resistant layer 21a serves as a flexible base, undergoing elastic deformation first when bent to fit against the arc part of the side waist of the rail. Then, the first outer wear-resistant layer 22a, the second outer wear-resistant layer 23a, and the third outer wear-resistant layer 24a fit against the contact surface of the gauge block 30. In other words, the inner wear-resistant layer 21a isolates the gauge block 30 from the rail, providing insulation and wear resistance. Furthermore, the thickness of the first outer wear-resistant layer 22a, the second outer wear-resistant layer 23a, and the third outer wear-resistant layer 24a is adjusted according to the actual wear conditions, further improving the wear resistance of the wear-resistant component 20 and reducing damage to the wear-resistant component 20 caused by wear.

[0052] Furthermore, such as Figure 6-7 As shown, in the first configuration of the wear-resistant component 20, specifically, the outer surfaces of the first outer wear-resistant layer 22a, the second outer wear-resistant layer 23a and the third outer wear-resistant layer 24a are flush, so that the outer surface of the protective structure is planar and the outer surface of the protective structure is lower than the outer surface of the protective surface 11. The protective structure, with its planar structure, accommodates gauge blocks 30 with consistent contact surface depth. The inner wear-resistant layer 21a acts as a flexible base, undergoing elastic deformation upon bending to first conform to the arcuate portion of the rail's side. Then, the first outer wear-resistant layer 22a, the second outer wear-resistant layer 23a, and the third outer wear-resistant layer 24a adhere to the contact surface of the gauge block 30. In other words, the inner wear-resistant layer 21a isolates the gauge block 30 from the rail, providing insulation and wear resistance. Furthermore, the thickness of the first outer wear-resistant layer 22a, the second outer wear-resistant layer 23a, and the third outer wear-resistant layer 24a is adjusted according to actual wear conditions, further improving the wear resistance of the wear-resistant component 20 and reducing damage caused by wear.

[0053] Furthermore, the first outer wear-resistant layer 22a, the second outer wear-resistant layer 23a, and the third outer wear-resistant layer 24a are respectively fixedly connected to the inner wear-resistant layer 21a to form an integral structure. In this embodiment, the first outer wear-resistant layer 22a, the second outer wear-resistant layer 23a, and the third outer wear-resistant layer 24a are respectively fixed to the inner wear-resistant layer 21a by adhesive, so that the wear-resistant part 20 has an integral structure, thereby eliminating interlayer gaps, avoiding interlayer peeling caused by foreign matter intrusion during train operation, and extending service life.

[0054] Furthermore, the first outer wear-resistant layer 22a, the second outer wear-resistant layer 23a, and the third outer wear-resistant layer 24a are all provided with first positioning holes 40; the inner wear-resistant layer 21a is provided with second positioning holes corresponding to the first positioning holes 40. In this embodiment, the first positioning holes 40 can be set in multiple sets, and the number of second positioning holes corresponds to the number of first positioning holes 40. The specific number can be determined according to the actual production situation.

[0055] During the production of wear-resistant parts, the first positioning hole 40 and the second positioning hole are precisely positioned by positioning components (such as positioning pins) in the mold, so that the first outer wear-resistant layer 22a, the second outer wear-resistant layer 23a, and the third outer wear-resistant layer 24a can be precisely aligned with the inner wear-resistant layer 21a, effectively avoiding the occurrence of interlayer misalignment. After the first outer wear-resistant layer 22a, the second outer wear-resistant layer 23a, and the third outer wear-resistant layer 24a are respectively bonded to the inner wear-resistant layer 21a, adhesive is injected into the first positioning hole 40 and the second positioning hole in the mold, which not only enhances the tightness of the bonding between the outer wear-resistant layer and the inner wear-resistant layer, but also improves the bonding strength between the two.

[0056] Preferably, the clearance position 111 is provided with an upwardly protruding isolation strip 112. The isolation strip 112 has a frame-shaped structure with one side open. By providing the frame-shaped isolation strip 112, contaminants can be isolated and prevented from flowing into the clearance position 111, thereby avoiding current leakage.

[0057] Preferably, the outer edge of the outer wear-resistant layer has an extension 113 extending upward to the isolation strip, and multiple sets of connecting holes are provided between the extension and the isolation strip 112; the extension 113 is fixed to the isolation strip 112 by physical fasteners, such as pins, screws, or other locking components. In this embodiment, the isolation strip 112 separately covers the side end of the wear-resistant component 20, such as the upper or lower half of the outer wear-resistant layer. The extension 113 and the isolation strip 112 are physically fixed to each other by physical fasteners, further physically fixing part of the outer wear-resistant layer to prevent the outer wear-resistant layer from shifting, thereby improving the insulation and wear resistance of the insulating wrapping component at the gauge block 30.

[0058] In other embodiments, the isolation strip 112 fully covers the side end of the wear-resistant component 20, such as the entire edge of the outer wear-resistant layer. The extension 113 and the isolation strip 112 are physically fixed to each other by physical fasteners, further physically fixing the entire edge of the outer wear-resistant layer to prevent the outer wear-resistant layer from shifting, thereby improving the insulation and wear resistance of the insulating package at the gauge block 30.

[0059] In this embodiment, there are two sets of outwardly protruding locking blocks 12 at both ends of the bottom surface 10. The two sets of locking blocks 12 are symmetrically distributed on the bottom surface 10 and are used to fix the insulating body to the outer surface of the rail. By setting the locking blocks 12, when the insulating body is installed on the rail, the locking blocks 12 on both sides fit against the outer surface of the rail, which plays a role in positioning and fixing. This allows the protective surfaces 11 on both sides to fold upwards against the fold lines, so that the insulating body can better fit and wrap around the rail, thereby improving the insulation of the rail and preventing current leakage.

[0060] In this embodiment, an adhesive layer is provided on the bottom surface 10 to adhere to the bottom surface 10 of the rail, so that the insulating body can be stably fixed to the bottom surface of the rail, thereby improving the connection stability of the insulating body on the rail.

[0061] The above are merely preferred embodiments of the present utility model, and only specifically describe the technical principles of the present utility model. These descriptions are only for explaining the principles of the present utility model and should not be construed as limiting the scope of protection of the present utility model in any way. Based on this explanation, any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model, as well as other specific embodiments of the present utility model that can be conceived by those skilled in the art without creative effort, should be included within the scope of protection of the present utility model.

Claims

1. An insulating covering for a steel rail, characterized by, It includes a wrapping body; the wrapping body includes a bottom surface and a protective surface; the bottom surface is located on the bottom surface of the rail; the protective surface is located outside the bottom surface and is used to wrap around and fit the outer surfaces of the two sides of the rail. The protective surface is provided with a clearance position for the gauge block to avoid; the clearance position is provided with a wear-resistant part for wear protection.

2. The insulating wrap for a steel rail according to claim 1, characterized in that, The wear-resistant component includes an inner wear-resistant layer and an outer wear-resistant layer; the inner wear-resistant layer is disposed on the clearance position; the outer wear-resistant layer is disposed on the inner wear-resistant layer; the inner wear-resistant layer and the outer wear-resistant layer form a protective structure, and the outer surface of the protective structure is higher or lower than the outer surface of the protective surface.

3. The insulating wrap for a steel rail according to claim 2, wherein The outer wear-resistant layer includes a first outer wear-resistant layer, a second outer wear-resistant layer, and a third outer wear-resistant layer; the first outer wear-resistant layer, the second outer wear-resistant layer, and the third outer wear-resistant layer are arranged side by side on the inner wear-resistant layer in sequence; The protrusion height of the second outer wear-resistant layer is less than or greater than the protrusion height of the first outer wear-resistant layer and the third outer wear-resistant layer, and the protrusion heights of the first outer wear-resistant layer and the third outer wear-resistant layer are the same or different.

4. The insulating wrap for a steel rail according to claim 3, characterized in that, The thickness of the second outer wear-resistant layer is 0-1 mm; the thickness of the first outer wear-resistant layer is 0.1-1.5 mm; and the thickness of the third outer wear-resistant layer is 0.1-1.5 mm.

5. An insulating covering for a steel rail according to claim 4, characterised in that, There is a height difference between the outer surfaces of the first outer wear-resistant layer, the second outer wear-resistant layer and the third outer wear-resistant layer, so that the outer surface of the protective structure has a height difference structure, and the outer surface of the protective structure is higher than the outer surface of the protective surface.

6. The insulating wrap for a steel rail of claim 4, wherein, The outer surfaces of the first outer wear-resistant layer, the second outer wear-resistant layer, and the third outer wear-resistant layer are flush with each other, so that the outer surface of the protective structure is planar and the outer surface of the protective structure is lower than the outer surface of the protective surface.

7. An insulating covering for a steel rail according to claim 5 or 6, characterised in that, The first outer wear-resistant layer, the second outer wear-resistant layer, and the third outer wear-resistant layer are fixedly connected to the inner wear-resistant layer to form an integrated structure.

8. An insulating covering for a steel rail according to claim 7, characterised in that, The first outer wear-resistant layer, the second outer wear-resistant layer, and the third wear-resistant layer are each provided with a first positioning hole; the inner wear-resistant layer is provided with a second positioning hole corresponding to the first positioning hole.

9. The insulating wrap for a steel rail of claim 3, wherein, The clearance area is provided with an upward-protruding isolation strip.

10. The insulating wrap for a steel rail of claim 9, wherein, The outer edge of the outer wear-resistant layer is provided with an extension that extends upward to the isolation strip; the extension is fixed to the isolation strip by a physical fastener.

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