Steel rail insulation wrapping piece

Abstract

The utility model discloses a steel rail insulation wrapping piece which comprises an insulation body, the insulation body is of a split structure comprising a left side protection face, a right side protection face and a bottom face, the left side protection face and the right side protection face are connected to the two sides of the bottom face respectively, and a steel rail is embedded between the left side protection face and the right side protection face. The bottom face is connected with a rail lower base plate, an insulating layer is arranged on the upper surface of the bottom face, and the bottom face of the steel rail is in contact with the insulating layer in an attached mode. The steel rail insulation wrapping material adopts a split type structure, and the material performance of the side surface protection layer and the material performance of the bottom surface can be differentially designed, so that the problems of single material and limited material performance of the traditional steel rail insulation wrapping material of an integral sheet are solved, and the installation efficiency and the production efficiency of the insulation wrapping material are improved; meanwhile, the problems that when a traditional insulating sleeve made of an integral sheet wraps and adheres the steel rail, stress stretching concentration and gaps are prone to occurring at the turning position of the rail bottom, and dust and water are accumulated, permeated and separated in the long-time use process are solved, and the service life is greatly prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to rail transit technical field, concretely is a kind of steel rail insulation wrapping piece. BACKGROUND

[0002] At present, traction power supply system of urban rail transit engineering in China mainly adopts DC1500V (or DC750V) traction network current collection, traction power supply mode of walking rail return current.

[0003] Substation supplies power to train through catenary or conductor rail, and forms a loop through steel rail to make traction current flow back to substation. Since steel rail cannot be absolutely insulated from ground, in DC traction power supply system, not all traction current flows back to traction substation through steel rail, but part of it flows into ground, along metal pipeline or steel structure, and then returns to traction substation through ground, along metal pipeline or steel structure, which is called stray current or stray current. This part of stray current leaking through steel rail insulation will also affect electrical equipment and facilities of rail transit to different degrees, and will also cause different degrees of harm to structure steel of track bed, tunnel and bridge and metal pipeline around them, resulting in serious safety hazards.

[0004] To solve this problem, the commonly used method at present is to install an insulation sleeve on the steel rail. The insulation sleeve can effectively block the leakage of current to the track bed. The existing insulation sleeve is basically of one-piece structure, including a bottom surface and protective surfaces on both sides of the bottom surface. The opening between the two protective surfaces facilitates the embedding of the steel rail, and the bottom surface of the steel rail is in contact with the bottom surface of the insulation sleeve. The bottom of the steel rail is not completely flat structure, but has a little turning radius. Therefore, the bottom area of the insulation sleeve needs to be bent and arranged, and the bending part will form a relatively outward expanding area, instead of a completely vertical flat surface. It is difficult to ensure complete adhesion of the protective surface to the turning position, and there is often a gap. Especially when assembling a steel rail several meters long, there will basically be a gap, which will lead to the accumulation of dust and impurities, and the infiltration of moisture, affecting the insulation performance of the insulation sleeve. In addition, since it is a one-piece structure, polishing is required after assembly to ensure the fit of each part, which requires a lot of labor.

[0005] The utility model with publication number CN220284497U discloses a system for preventing and treating urban rail transit stray current corrosion influence, and discloses an insulation sleeve of one-piece structure. SUMMARY

[0006] To solve the above technical problems, the present application provides a steel rail insulation wrapping piece which is more tightly assembled and less likely to be damaged.

[0007] To solve the above technical problems, the present application adopts the following technical solutions:

[0008] A rail insulation wrapping piece, comprising an insulation main body, the insulation main body is a split structure comprising a left side protection surface, a right side protection surface and a bottom surface, the left side protection surface and the right side protection surface are connected on both sides of the bottom surface respectively, and the left side protection surface and the right side protection surface are used for being embedded into a rail.

[0009] As a further improvement, the bottom surface is connected with a rail pad.

[0010] As a further improvement, the two sides of the bottom surface are upwardly bent to form upper protruding side walls, the side surfaces of the left side protection surface and the right side protection surface are provided with lower protruding side walls, and the lower protruding side walls are connected with the upper protruding side walls.

[0011] As a further improvement, the inner side surfaces of the lower protruding side walls are provided with limiting step surfaces, the upper protruding side walls are located on the inner sides of the lower protruding side walls, and the limiting step surfaces are pressed against the end surfaces of the upper protruding side walls.

[0012] As a further improvement, the upper protruding side walls are provided with bottom openings, the left side protection surface and the right side protection surface are provided with upper openings, and the upper openings correspond to the bottom openings.

[0013] As a further improvement, the end surfaces of the upper protruding side walls are provided with adhesive layers, and the adhesive layers are connected with the lower protruding side walls.

[0014] As a further improvement, the bottom surface and the rail pad are connected by an integral vulcanization mode.

[0015] As a further improvement, the upper surface of the bottom surface is provided with an insulation layer, and the rail bottom surface is in contact with the insulation layer.

[0016] As a further improvement, the left side protection surface, the right side protection surface and the bottom surface are made of insulation materials with the same performance or different performances.

[0017] As a further improvement, the limiting step surfaces on the lower protruding side walls are continuously arranged or are arranged in segments.

[0018] Compared with the prior art, the utility model has the following beneficial technical effects:

[0019] Adopt the split structure, and the side protection surface and the bottom surface can be made of materials with different performances, thereby forming different performance differences, and more extensive use requirements can be met; the problem of single material and limited material performance of the traditional one-piece sheet rail insulation wrapping material is solved; the protection surface, the bottom surface and the rail pad, the connection between the protection surface and the bottom surface are double-layer structures, which can better adhere to the rail, avoid gaps, directly cooperate and assemble, make the functions of the insulation sleeve and the rail pad combined and complementary, reduce the polishing construction difficulty of the traditional one-piece structure rail insulation wrapping material, improve the work efficiency and the production efficiency of the insulation sleeve, and at the same time, the problems of stress stretching concentration and gap at the rail bottom turning place of the traditional one-piece sheet insulation wrapping material during rail wrapping and bonding, dust and moisture accumulation, penetration and separation during long-term use and the like are eliminated, and the service life is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a three-dimensional structure schematic view of the utility model;

[0021] Figure 2 It is a three-dimensional structure schematic view of the left side protection surface in the utility model;

[0022] Figure 3 It is an assembly structure schematic view of the bottom surface and the rail pad in the utility model.

[0023] Figure 4 It is Figure 1 the enlarged schematic view of A in

[0024] Figure 5 It is an assembly schematic view of the utility model and the rail;

[0025] Figure 6 It is a partial cross-sectional structure schematic view of the bottom surface in the utility model.

[0026] REFERENCE SIGNS:

[0027] Left side protection surface 1, right side protection surface 2, bottom surface 3, rail pad 4, rail 5, upper protruding side wall 6, lower protruding side wall 7, limiting step surface 8, bottom opening 9, upper opening 10, insulation layer 11. DETAILED DESCRIPTION

[0028] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0029] In the description of the present application, it needs to be understood that, if there are terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0030] In the description of the present application, it needs to be understood that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected. It can be mechanical connection, or electrical connection. It can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0031] As shown in Figures 1-4 An insulating wrapping piece for a rail, comprising an insulating main body, the insulating main body is a split structure comprising a left side protection surface 1, a right side protection surface 2 and a bottom surface 3, the left side protection surface 1 and the right side protection surface 2 are connected on both sides of the bottom surface 3 respectively, and a space for embedding into a rail 5 is arranged between the left side protection surface 1 and the right side protection surface 2. The left side protection surface and the right side protection surface are of the same structure and are distributed on the two sides of the bottom surface symmetrically. Since the split structure is adopted, the left side protection surface, the right side protection surface and the bottom surface are divided into three parts and are respectively manufactured, thereby reducing the construction difficulty that the traditional integral structure of the rail insulating wrapping material needs to be polished after assembly to match the rail pad. Since the left side protection surface and the right side protection surface are assembled with the bottom surface in a split manner, better adhesion and sealing with the rail can be achieved, especially at the turning arc position of the rail, thereby achieving airtight sealing and preventing dust and moisture from accumulating and penetrating. In addition, since the left side protection surface and the right side protection surface are respectively manufactured, materials with different performances can be used to form a differentiated design and meet different use requirements.

[0032] In addition, a track pad 4 can be connected under the bottom surface, and the track pad 4 and the bottom surface are connected to form an integral body by integral vulcanization. At the connection between the left side guard surface and the bottom surface, the left side guard surface is bent by itself by a part, and is not affected by the bottom surface, so that the left side guard surface can be closely attached to the rail to avoid gaps.

[0033] The bottom surface 3 is upwardly bent on both sides to form an upper protruding side wall 6, and the left side guard surface 1 and the right side guard surface 2 are both provided with a lower protruding side wall 7, the lower protruding side wall 7 is connected with the upper protruding side wall 6, and an inner and outer double-layer structure is formed at the connection, so that the bending of the whole at the turning part is not needed, and the upper protruding side wall 7 and the lower protruding side wall 6 form a better vertical surface. In the conventional integral structure, the side guard surface is easily outwardly expanded when being bent relative to the bottom surface, resulting in gaps in the cooperation with the rail. The upper protruding side wall and the lower protruding side wall can be bonded by glue or fused to ensure stability.

[0034] The inner side of the lower protruding side wall 7 is provided with a limiting step surface 8, the upper protruding side wall 7 is located at the inner side of the lower protruding side wall 6, the limiting step surface 8 is pressed against the end surface of the upper protruding side wall 7 to realize positioning and clamping, ensure the accuracy of assembly, and reduce the difficulty of installation and improve the assembly efficiency. Since the upper protruding side wall 6 is located at the inner side of the lower protruding side wall 7, when being assembled with the rail 5, the upper protruding side wall directly contacts the surface of the rail 5, and since the upper protruding side wall 6 is a vertical structure, the problem of outward expansion and arc shape does not occur, so that close contact and sealing are ensured. The limiting step surface 8 of the lower protruding side wall 7 is equivalent to hollowing out a part in the thickness direction, so that this part is thinned. After the upper protruding side wall 6 and the lower protruding side wall 7 are assembled, a flat outer surface is formed, so that the upper protruding side wall 6 is flush with the outer protruding side wall 7 to contact the surface of the rail 5, and the problem of unevenness does not occur, and the generation of gaps is prevented. The close contact and sealing can prevent dust and moisture from entering, and to some extent, the working surface of the rail bottom is isolated from the air, and air oxidation is blocked.

[0035] In addition, the limiting step surface 8 on the lower protruding side wall 7 is continuously and sequentially arranged, and extends along the length direction of the left side guard surface and the right side guard surface, or is arranged in segments, that is, a limiting step surface is divided into multiple segments.

[0036] The upper protruding side wall 6 is provided with a bottom opening 9, and the left side guard surface 1 and the right side guard surface 2 are both provided with an upper opening 10 corresponding to the bottom opening 9. When being assembled with the rail, the external fastener can enter the upper opening to reduce the abrasion of the left side guard surface and the right side guard surface.

[0037] In addition, the upper surface of the bottom surface 3 is provided with an insulating layer 11, and the bottom surface of the rail 5 contacts the insulating layer 11.

[0038] The left side protection surface, the right side protection surface, the bottom surface and the rail bottom pad are made of insulating material to ensure insulation.

[0039] In addition, for the assembly structure of the upper convex side wall 6 and the lower convex side wall 7, a thinner avoiding area can be formed on the outer surface of the upper convex side wall 6, and then the lower convex side wall 7 is clamped into the avoiding area of the upper convex side wall 6, thereby connecting the upper convex side wall 6 and the lower convex side wall 7.

[0040] Alternatively, when the upper convex side wall 6 and the lower convex side wall 7 have a certain thickness, a blind hole can also be formed in the middle, such as a blind hole in the upper convex side wall 6, and the lower convex side wall 7 is inserted and fastened by glue or other means.

[0041] Reference Figure 5 As shown, the rail 5 is inserted from the middle of the left side protection surface 1 and the right side protection surface 2, and the bottom surface of the rail 5 is in contact with the bottom surface 3. Since the upper convex side wall 6 and the lower convex side wall 7 are directly and vertically arranged, they will be in contact with the corresponding surface of the rail 5, thereby forming a tight seal.

[0042] The utility model can form two forms, one is a product composed of the left side protection surface, the right side protection surface and the bottom surface, when the rail does not need to replace the pad, at this time, direct processing and installation can be carried out. The other is that the rail bottom pad is formed under the bottom surface, and when the rail is assembled, the rail bottom pad is directly installed.

[0043] It should be noted that the above is only the preferred embodiment of the present application and is not used to limit the present application, although the present application is described in detail with reference to the embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced, but any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A rail insulating wrap comprising an insulating body, characterised in that, The insulating body is a split structure comprising a left protective surface, a right protective surface and a bottom surface, the left protective surface and the right protective surface are connected to two sides of the bottom surface respectively, the left protective surface and the right protective surface are used for embedding into the steel rail, two sides of the bottom surface are upwardly bent to form upper protruding side walls, the left protective surface and the right protective surface are both provided with lower protruding side walls, and the lower protruding side walls are connected with the upper protruding side walls.

2. A rail insulation wrap as defined in claim 1, wherein, The bottom surface is connected with a rail pad.

3. The rail insulating wrap of claim 1, wherein, An inner side of the lower protruding side wall is provided with a limiting step surface, the upper protruding side wall is located at the inner side of the lower protruding side wall, and the limiting step surface is pressed against an end surface of the upper protruding side wall.

4. The rail insulating wrap of claim 1, wherein, The upper protruding side wall is provided with a bottom opening, the left protective surface and the right protective surface are both provided with upper openings, and the upper openings correspond to the bottom opening.

5. The rail insulating wrap of claim 1, wherein, An end surface of the upper protruding side wall is provided with a glue layer, and the glue layer is connected with the lower protruding side wall.

6. The steel rail insulating wrap of claim 1, wherein, The bottom surface and the rail pad are connected by integral vulcanization.

7. The steel rail insulating wrap of claim 1, wherein, An upper surface of the bottom surface is provided with an insulating layer, and a bottom surface of the steel rail is in contact with the insulating layer.

8. The steel rail insulating wrap of claim 1, wherein, The left protective surface, the right protective surface and the bottom surface are made of insulating materials with same or different properties.

9. The steel rail insulating wrap of claim 1, wherein, The limiting step surface on the lower protruding side wall is continuously arranged or arranged in segments. The bottom surface is connected with a rail pad. An inner side of the lower protruding side wall is provided with a limiting step surface, the upper protruding side wall is located at the inner side of the lower protruding side wall, and the limiting step surface is pressed against an end surface of the upper protruding side wall. The upper protruding side wall is provided with a bottom opening, the left protective surface and the right protective surface are both provided with upper openings, and the upper openings correspond to the bottom opening. An end surface of the upper protruding side wall is provided with a glue layer, and the glue layer is connected with the lower protruding side wall. The bottom surface and the rail pad are connected by integral vulcanization. An upper surface of the bottom surface is provided with an insulating layer, and a bottom surface of the steel rail is in contact with the insulating layer. The left protective surface, the right protective surface and the bottom surface are made of insulating materials with same or different properties. The limiting step surface on the lower protruding side wall is continuously arranged or arranged in segments.

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