Blocking type insulation reinforcing fastener

Abstract

The utility model discloses a blocking type insulation enhancing fastener which comprises an iron base plate, an under-plate insulation plate, an insulation buffering base plate and a height adjusting base plate which are sequentially stacked, an insulation enhancing rail lower base plate is arranged between the iron base plate and a steel rail, baffles are arranged on the two sides of the insulation enhancing rail lower base plate, and an iron base is arranged on the iron base plate. An elastic strip and a gauge block are installed on the side, close to the steel rail, of the iron base, the gauge block abuts against the side face of the steel rail, the blocking type insulation reinforcing fastener extrudes the gauge block through the elastic strip so that the gauge block and the steel rail can be fixed, and the iron base plate, the under-plate insulation plate, the insulation buffering base plate and the height adjusting base plate are fixed to a ballast bed through spike assemblies. An insulating sleeve is arranged below the spike assembly; a retaining wall is arranged on the periphery of the face, close to the steel rail, of the under-plate insulating plate, and pollution discharge holes are formed in the four corners of the retaining wall. According to the utility model, through the arrangement of the under-plate insulating plate and the improved insulating reinforced under-rail backing plate, the creepage distance between the steel rail and the blocking-type insulating reinforced fastener is increased, and the insulating property of the blocking-type insulating reinforced fastener is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of insulation technology for the conductive path between the rail and the track bed, and in particular to a blocking insulation reinforcement fastener. Background Technology

[0002] Traditional rail fasteners are often insulated using thinner components (gauge blocks, rail pads, height adjustment pads, and insulating sleeves, etc.). The creepage distance between the insulating components and the track bed is short, and the insulation performance is significantly affected by the environment. In particular, the traditional iron pads in the fasteners are made of metal, which, as excellent conductors, has a negative impact on the fastener insulation system. Utility Model Content

[0003] The main purpose of this utility model is to solve the technical problem that the insulation of traditional rail fasteners is easily affected by the environment.

[0004] To achieve the above objectives, this utility model provides a blocking-type insulation reinforcement fastener, which includes: an iron pad, an under-plate insulation plate, an insulation buffer pad, and a height adjustment pad stacked sequentially. An insulation reinforcement under-rail pad is provided between the iron pad and the rail. Baffles are provided on both sides of the insulation reinforcement under-rail pad. An iron seat is provided on the iron pad. A spring clip and a gauge block are installed on the side of the iron seat near the rail. The gauge block abuts against the side of the rail. The blocking-type insulation reinforcement fastener fixes the gauge block to the rail by pressing the gauge block with the spring clip. The iron pad, the under-plate insulation plate, the insulation buffer pad, and the height adjustment pad are fixed to the track bed by a rail spike assembly. An insulating sleeve is provided on the rail spike assembly. A retaining wall is provided around the side of the under-plate insulation plate near the rail, and a drain hole is provided at the four corners of the retaining wall.

[0005] In one embodiment, the insulating reinforced rail pad has grooves on both sides near the gauge block.

[0006] In one embodiment, the side of the baffle away from the rail is provided with linear protrusions.

[0007] In one embodiment, the upper end of the retaining wall is provided with an anti-pollution structure.

[0008] In one embodiment, the anti-pollution structure is a dirt-proof eaves.

[0009] In one embodiment, the underside insulating plate is provided with mounting holes for the rail spike assembly to pass through, and insulating sealing rings are provided above and below the mounting holes of the underside insulating plate.

[0010] In one embodiment, grooves for placing the insulating sealing ring are provided on the upper and lower surfaces of the under-plate near the mounting holes.

[0011] In one embodiment, the surfaces of the baffle and the retaining wall are coated with an insulating coating.

[0012] This invention increases the creepage distance of the blocking insulation reinforcement fastener system by setting an insulating plate under the plate, making the blocking insulation reinforcement fastener less susceptible to environmental influences during use and able to maintain a high insulation level for a long time.

[0013] Furthermore, this invention, by providing a baffle wall, drainage hole, and anti-pollution structure (anti-pollution eaves) on the underside insulation plate, allows liquid contaminants to be discharged promptly, reducing the environmental impact on the barrier-type insulation reinforcement fastener, especially the corrosion of the iron pad, and extending its service life. Further, by providing baffles and grooves on the underside pad of the insulation reinforcement rail, the accumulation of liquid and solid contaminants is prevented, reducing the impact of environmental pollution on the insulation performance of the barrier-type insulation reinforcement fastener. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the installation of the blocking insulation reinforcement fastener in one embodiment of the present invention;

[0016] Figure 2 This is a schematic diagram of the structure of the blocking insulation reinforcement fastener in one embodiment of the present invention;

[0017] Figure 3 This is a side view of the blocking insulation reinforcement fastener in one embodiment of the present invention;

[0018] Figure 4 This is a schematic diagram of the structure of the insulation-reinforced rail pad in one embodiment of the present invention;

[0019] Figure 5 This is a schematic diagram of the iron pad in one embodiment of the present invention;

[0020] Figure 6 This is a schematic diagram of the structure of the under-plate insulating plate in one embodiment of the present invention;

[0021] Figure 7This is a schematic diagram of the structure of the insulating buffer pad in one embodiment of the present invention;

[0022] Figure 8 This is a schematic diagram of the height adjustment plate in one embodiment of the present invention;

[0023] Figure 9 This is a schematic diagram of the structure of the first insulating sealing ring in one embodiment of the present invention;

[0024] Figure 10 This is a schematic diagram of the structure of the second insulating sealing ring in one embodiment of the present invention;

[0025] Figure 11 This is a cross-sectional schematic diagram of a road stud assembly in one embodiment of the present invention;

[0026] Explanation of key component symbols:

[0027] 1-Rail; 2-Gap block; 3-Insulated reinforced rail pad; 4-Iron pad; 5-Under-plate insulation plate; 6-Height adjustment pad; 7-Elastic strip; 8-Spiked rail assembly; 9-Insulated buffer pad; 10-Iron base; 11-Drain hole; 12-Anti-fouling eaves; 13-Groove; 14-First boss; 15-Second boss; 16-First insulating sealing ring; 17-Second insulating sealing ring; 18-Anchor bolt; 19-Heavy-duty elastic washer; 20-Insulating sleeve; 21-Baffle. Detailed Implementation

[0028] To better understand the above technical solutions, exemplary embodiments of this disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of this disclosure to those skilled in the art.

[0029] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0030] It should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the coordinate system shown in the accompanying drawings. They are used only for the convenience of describing this utility model 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 utility model.

[0031] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0033] This utility model provides a blocking type insulation reinforcement fastener, as shown in the reference. Figures 1 to 11 In one embodiment, the blocking insulation reinforcement fastener includes: an iron pad 4, an under-plate insulation plate 5, an insulation buffer pad 9, and a height adjustment pad 6 stacked sequentially. An insulation reinforcement under-rail pad 3 is provided between the iron pad 4 and the rail 1. Baffles 21 are provided on both sides of the insulation reinforcement under-rail pad 3. An iron seat 10 is provided on the iron pad 4. A spring clip 7 and a gauge block 2 are installed on the side of the iron seat 10 near the rail 1. The gauge block 2 abuts against the side of the rail 1. The blocking insulation reinforcement fastener fixes the gauge block 2 to the rail 1 by pressing the gauge block 2 with the spring clip 7. The iron pad 4, the under-plate insulation plate 5, the insulation buffer pad 9, and the height adjustment pad 6 are fixed to the track bed by a rail spike assembly 8. An insulation sleeve 20 is provided on the rail spike assembly 8. A retaining wall is provided around the side of the under-plate insulation plate 5 near the rail 1. Drainage holes 11 are provided at the four corners of the retaining wall.

[0034] In this embodiment, the spring bar 7 can be a type B spring bar; refer to Figure 5The iron base 10 is located on both sides of the rail 1, and in this embodiment, the relative distance between the two iron bases 10 on the iron pad 4 is the farthest. In this embodiment, the iron pad 4, the under-plate insulating plate 5, the insulating buffer pad 9, and the height adjustment pad 6 are respectively provided with corresponding screw holes. In this embodiment, there is a pair of screw holes on each plate. The screw holes are used for the rail spike assembly 8 to pass through and fix the blocking insulating reinforcement fastener to the track bed. The insulating reinforcement rail pad 3 is only set between the parts of the iron pad 4 that will contact the rail 1. The insulating sleeve 20 is pre-embedded in the track bed. The baffle 21 is provided with a notch to cooperate with the gauge block 2 to isolate the rail from the iron pad 4.

[0035] Specifically, the type B elastic bar is fixed to the iron base 10 by T-bolts, hexagonal nuts, and flat insulating sealing rings, and part of the type B elastic bar presses on the gauge block 2, so that the gauge block 2 fixes the rail 1. At the same time, the pressure is distributed to the insulating reinforced rail pad 3, and together with the pressure on the insulating reinforced rail pad 3 due to the weight of the rail 1, the insulating reinforced rail pad 3 is fixed to the blocking insulating reinforced fastener.

[0036] In this embodiment, by setting an insulating plate 5 under the plate, and simultaneously setting a retaining wall, a baffle 21 and a drain hole 11, solid pollutants are blocked, allowing liquid pollutants to be discharged in time, reducing the impact on the corrosion of the iron pad plate 4. The baffle 21 cooperates with the track gauge block 2 to isolate the rail 1 from the iron pad plate 4, increasing the creepage distance of the blocking insulation reinforcement fastener system, making the blocking insulation reinforcement fastener less susceptible to environmental influences during use.

[0037] In one embodiment, the under-plate insulating plate 5 and the insulating reinforced rail pad 3 can be used in combination or separately; the under-plate insulating plate 5 can be used in combination with the insulating buffer pad 9 or the height adjustment pad 6, or can replace the insulating buffer pad 9; it can be used according to the actual height adjustment requirements, or can replace the height adjustment pad 6.

[0038] In one embodiment, reference Figure 1-4 The side of the baffle 21 away from the rail 1 is provided with linear protrusions.

[0039] The linear protrusions on the baffle 21 are parallel to the rail 1. In other words, the baffle 21 is provided with horizontal linear protrusions, which can be a single layer or a multi-layer structure.

[0040] In other embodiments, the baffle 21 is provided with an eaves structure. This eaves structure can be a single-layer structure or a multi-layer structure.

[0041] In this embodiment, the creepage distance is increased by providing linear protrusions and an eaves structure on the baffle 21.

[0042] In one embodiment, referring to Figure 6 , the material of the under-board insulating plate 5 is a highly insulating modified polymer material.

[0043] Among them, the highly insulating modified polymer material has good insulation performance, excellent high-temperature resistance, excellent mechanical strength and wear resistance, and is not easy to absorb moisture and humidity, and is easy to form and cut.

[0044] In this embodiment, by using the highly insulating modified polymer material to make the under-board insulating plate 5, while improving the insulation performance of the blocking type insulating enhanced fastener, the service life of the blocking type insulating enhanced fastener is also improved.

[0045] In one embodiment, referring to Figure 6 , a retaining wall is provided around the side of the under-board insulating plate 5 close to the rail 1, and a sewage discharge hole 11 is provided on the retaining wall.

[0046] Among them, the sewage discharge hole 11 can be set at multiple positions on the retaining wall. Among all positions, it is best to set the sewage discharge hole 11 at one end of the retaining wall close to the under-board insulating plate 5; in one embodiment, there is one sewage discharge hole 11 on the retaining wall on one side of the under-board insulating plate 5. In other embodiments, 2, 3, or 4 sewage discharge holes 11 can be set on the retaining wall on one side of the under-board insulating plate 5, or single or multiple sewage discharge holes can be set on the retaining walls on multiple sides of the under-board insulating plate 5. In this embodiment, as Figure 5 shown, a sewage discharge hole 11 is respectively provided at both ends of the retaining walls on the opposite sides of the under-board insulating plate 5 close to the under-board insulating plate 5.

[0047] In this embodiment, by providing the retaining wall and the sewage discharge hole 11 on the under-board insulating plate 5, it is possible to avoid rust caused by water accumulation, prevent the direct discharge of accumulated water to the surface of the sleeper, and increase the creepage distance of the fastener system.

[0048] In one embodiment, referring to Figure 1 , 2 , 3 and 6, an anti-pollution structure is provided at the upper end of the retaining wall.

[0049] Among them, the anti-pollution structure can be a single-layer structure or a multi-layer structure; the anti-pollution structure includes an anti-pollution eaves 12, and the anti-pollution eaves 12 can be an umbrella-shaped eaves structure (there are anti-pollution eaves 12 on both sides of the retaining wall), or a "卜"-shaped (specifically, refer to Figure 6 ) eaves structure (there is an anti-pollution eaves 12 on the side of the retaining wall away from the base plate 4).

[0050] In this embodiment, by setting a dirt-proof eave 12 on the retaining wall, a sharp-angle blocking area is formed between the dirt-proof eave 12 of the insulating buffer pad 9 and the vertical surface around it, which blocks the surface leakage of current and has good dirt-proof performance and can be used for a long time. The water drop height of the insulating plate 5 under the plate is increased, and it is not easy to form a continuous conductive water line.

[0051] In one embodiment, reference Figure 4 The insulating reinforced rail pad 3 has grooves 13 on both sides near the gauge block 2.

[0052] According to Clause 5.3.5, Paragraph 5 of CJJ / T 49-2020, the outer edge dimension of the iron pad 4 and the insulating pad block under the rail 1 should be larger than the metal parts connected to them, and its outer edge dimension should not be less than 20mm. In this scheme, along the direction of rail 1, the distance between the outermost edge of the insulating reinforced rail pad 3 and the side edge of the iron pad 4 reaches 35mm, and the creepage distance at the groove 13 on the side of the insulating reinforced rail pad 3 is also increased to more than 42.7mm. This groove 13 is located on the side of the baffle 21 near rail 1.

[0053] In this embodiment, the sides of the insulating reinforced rail underplate 3 feature a groove 13 structure to prevent the accumulation of liquid and solid contaminants, thus making it difficult for them to form continuous flow or conductive pathways. When liquid contaminants flow downwards from the rail 1, most of them are collected by the grooves 13 on both sides. Then, utilizing the slope designed on the track, the liquid is discharged from both ends of the insulating reinforced rail underplate 3 onto the track bed. This makes it even more difficult for a conductive path to form between the insulating reinforced rail underplate 3 and the track bed.

[0054] In one embodiment, reference Figure 4 The insulating reinforced rail pad 3 has a first boss 14 and a second boss 15 on the side near the track bed.

[0055] The first boss 14 is a pair, and the distance between the two first bosses 14 is greater than the width of the under-plate insulation plate 5, thereby increasing the creepage distance of the insulation-reinforced rail pad 3 along the longitudinal direction of the rail 1; the second boss 15 is a pair, and the distance between the two second bosses 15 is approximately equal to the width of the iron pad 4, which is used for the longitudinal positioning of the insulation-reinforced rail pad 3.

[0056] In this embodiment, by setting the first boss 14 and the second boss 15 to fix the relative positions of the insulating reinforced rail pad 3 and the iron pad 4, it is possible to ensure that there is a reasonable positional relationship between the two, and to further increase the creepage distance between the insulating reinforced rail pad 3 and the rail 1.

[0057] In one embodiment, the surfaces of the baffle 21 and the retaining wall are coated with an insulating coating.

[0058] In this embodiment, an insulating coating is applied to the surfaces of the baffle 21 and the retaining wall to increase surface resistance and reduce surface energy.

[0059] In one embodiment, reference Figure 5 The surface of the iron pad 4 is coated with a first coating.

[0060] The first coating and the subsequent second coating serve to provide insulation, and this designation is used to distinguish them from the previous embodiment.

[0061] It is important to note that traditional methods of reinforcing rail 1 with insulation coating rely primarily on applying an insulating coating to the outer surface of the rail 1. This insulation coating process is extremely complex, especially when rail 1 needs to be replaced. It inevitably damages the insulating coating at the weld joints, and repair of this coating can only be done on-site after welding of the rail 1. During the curing process, environmental factors can cause localized insulation defects and may lead to coating deterioration and eventual damage.

[0062] In this embodiment, by applying a first coating to the surface of the iron pad 4 to insulate it from the outside world, the conductive material of the iron pad 4 is transformed into a surface-insulating object, which further increases the creepage distance of the blocking insulation reinforcement fastener and improves the insulation performance of the blocking insulation reinforcement fastener.

[0063] In one embodiment, reference Figure 5 The material of the first coating is a nano-ceramic high-strength wear-resistant insulating coating.

[0064] Among them, the nano-ceramic high-strength wear-resistant insulating coating has extremely high wear resistance, with a hardness of over 9H, an adhesion of up to 12MPa (pull-off method), and surface drying in 60 minutes. It is also fireproof and impact-resistant. As a fastener for the insulation layer of rail 1, the nano-ceramic coating has a wet resistance value of 171.56kΩ, which remains relatively stable in humid environments. This value exceeds the 100kΩ specified in Clause 5.3.5, Paragraph 4 of CJJ / T 49-2020. Furthermore, the method of applying the coating to the iron pad 4 allows for easy replacement on-site using the same procedure as replacing ordinary iron pad 4 parts, making the operation very convenient.

[0065] In this embodiment, by using a nano-ceramic high-strength wear-resistant insulating coating to coat the iron pad 4, the impact of environmental corrosion on its iron parts can be reduced, thus extending the service life of the blocking insulation reinforcement fastener. At the same time, the properties of this material make the blocking insulation reinforcement fastener less susceptible to the influence of the external environment.

[0066] In one embodiment, reference Figure 6 , 9 10. The under-plate insulating plate 5 is provided with mounting holes for the rail spike assembly 8 to pass through, and insulating sealing rings are provided above and below the mounting holes of the under-plate insulating plate 5.

[0067] Among them, reference Figure 1-11 The iron pad 4, the under-plate insulating plate 5, the insulating buffer pad 9, and the height adjustment pad 6 are all provided with mounting holes for the rail spike assembly 8 to pass through. The insulating sealing ring is made of silicon-based nanomaterials with elastic deformation capability. The insulating sealing ring can be installed on the upper and lower surfaces of the under-plate insulating plate 5, or it can be combined into a whole; in other embodiments, refer to Figure 6 The upper and lower surfaces of the insulating plate 5 under the plate are provided with grooves for placing the insulating sealing ring near the mounting hole.

[0068] In this embodiment, the insulating sealing ring is used to prevent external contaminants from entering the insulating sleeve 20 along the road spike assembly 8, thereby causing the contaminants to form a conductive path.

[0069] In one embodiment, reference Figure 9-11 The rail spike assembly 8 includes an anchor bolt 18, a heavy-duty elastic washer 19, a first insulating sealing ring 16, and a second insulating sealing ring 17. The heavy-duty elastic washer 19, the first insulating sealing ring 16, and the second insulating sealing ring 17 enclose the anchor bolt 18. The heavy-duty elastic washer 19 is disposed between the nut of the anchor bolt 18 and the under-plate insulating plate 5. The first insulating sealing ring 16 is disposed between the heavy-duty elastic washer 19 and the under-plate insulating plate 5. The second insulating sealing ring 17 is disposed between the under-plate insulating plate 5 and the insulating buffer pad 9.

[0070] In this embodiment, the first insulating sealing ring 16 and the second insulating sealing ring 17 are made of a highly insulating elastomer material (silicon-based nanomaterial).

[0071] In this embodiment, after the first insulating sealing ring 16 and the second insulating sealing ring 17 are compressed, their upper and lower contact surfaces can both play a waterproof sealing role and have a certain bolt anti-loosening function; the first insulating sealing ring 16 and the second insulating sealing ring 17 and the bolt parts in the road stud assembly 8 will have an interference fit, and after assembly, they can achieve self-sealing and block contaminants above the insulating sealing ring from flowing downward along the bolt.

[0072] In one embodiment, reference Figure 1 , Figure 2 , Figure 3 and Figure 11 The road stud assembly 8 is coated with a second coating.

[0073] The second coating is applied to the nuts of the anchor bolts 18 and the heavy-duty elastic washers 19 in the road spike assembly 8 to coat and fill the physical gaps between the road spike assembly 8 and the various parts.

[0074] In this embodiment, by applying a second coating to the road stud assembly 8, the portion not covered by the insulating sleeve 20 is protected, achieving full enclosure and isolation of the bolt head and heavy-duty elastic washer 19 of the road stud assembly 8. This blocks the current leakage path from the bolt head and enhances the waterproofing at the joint between the bolt and the heavy-duty elastic washer 19.

[0075] In one embodiment, reference Figure 11 The material of the second coating is a highly insulating silicon-based nano-insulating coating.

[0076] Among them, high-insulation silicon-based nano-insulating coatings have excellent electrical insulation, high temperature resistance and chemical stability, low viscosity and good fluidity, and are easy to apply and coat on various surfaces.

[0077] In this embodiment, by applying a highly insulating silicon-based nano-insulating coating to the road spike assembly 8, the bolt head and the heavy-duty elastic washer 19 of the road spike assembly 8 are fully enclosed and isolated, which is even more effective.

[0078] In one embodiment, reference Figure 11 The second coating is applied to the exposed portion of the road spike assembly 8.

[0079] In this embodiment, applying the second coating to the exposed portion of the road spike assembly 8 can prevent contaminants from flowing into the insulating sleeve, thereby maximizing the utilization of the second coating.

[0080] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A blocking type insulation reinforcement fastener, characterized in that, The blocking-type insulation reinforcement fastener includes: a steel pad, an under-plate insulation plate, an insulation buffer pad, and a height adjustment pad stacked in sequence. An insulation reinforcement rail pad is provided between the steel pad and the rail. Baffles are provided on both sides of the insulation reinforcement rail pad. A steel seat is provided on the steel pad. A spring clip and a gauge block are installed on the side of the steel seat near the rail. The gauge block abuts against the side of the rail. The blocking-type insulation reinforcement fastener fixes the gauge block to the rail by pressing the gauge block with the spring clip. The steel pad, the under-plate insulation plate, the insulation buffer pad, and the height adjustment pad are fixed to the track bed by a rail spike assembly. An insulating sleeve is provided on the rail spike assembly. A retaining wall is provided around the side of the under-plate insulation plate near the rail. Drainage holes are provided at the four corners of the retaining wall.

2. The blocking insulation reinforcement fastener as described in claim 1, characterized in that, The insulating reinforced rail pad has grooves on both sides near the gauge block.

3. The blocking insulation reinforcement fastener as described in claim 1, characterized in that, The side plates of the insulating reinforced rail pad have linear protrusions on the side away from the rail.

4. The blocking insulation reinforcement fastener as described in claim 1, characterized in that, The upper end of the retaining wall is equipped with a pollution prevention structure.

5. The blocking insulation reinforcement fastener as described in claim 4, characterized in that, The pollution-proof structure is a pollution-proof eaves.

6. The blocking insulation reinforcement fastener as described in claim 1, characterized in that, The lower insulating plate is provided with mounting holes for the rail spike assembly to pass through, and insulating sealing rings are provided above and below the mounting holes of the lower insulating plate.

7. The blocking insulation reinforcement fastener as described in claim 6, characterized in that, The insulating plate under the plate has grooves on its upper and lower surfaces near the mounting holes for placing the insulating sealing ring.

8. The blocking insulation reinforcement fastener as described in claim 1, characterized in that, The surfaces of the baffle and the retaining wall are coated with insulating paint.

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