A steel rail insulating clamp plate with high applicability

Abstract

The application discloses a steel rail insulating clamp plate with high applicability, which comprises left and right clamp plates symmetrically arranged and clamped between adjacent steel rails through locking bolts and nuts. The clamp plate is sequentially provided with a base layer, an insulating bearing layer, an elastic buffer layer and a wear-resistant contact layer from outside to inside. The base layer is made of a steel plate and is provided with a mounting slot. The insulating bearing layer is a glass fiber reinforced epoxy resin layer. The elastic buffer layer is a nitrile rubber layer embedded with metal spring sheets. The wear-resistant contact layer is a nitrile rubber layer coated with a tungsten carbide coating and provided with protrusions at both ends. The utility model has excellent insulating performance, good mechanical adaptability, high-efficiency wear-resistant characteristics and convenient installation adaptability, can effectively improve the safety and reliability of a railway track system and reduce maintenance cost.

Description

Technical Field

[0001] This application relates to the field of railway equipment technology, and in particular to a highly applicable rail insulation clamp. Background Technology

[0002] In railway track systems, rail insulation clamps are key components for achieving electrical insulation and mechanical connection of rails, and their performance directly affects the normal operation of track circuits and railway transportation safety. Currently, most commercially available rail insulation clamps use a single material or a simple composite structure, which has many drawbacks. On the one hand, the insulation performance of traditional clamps is easily affected by environmental factors. For example, long-term exposure to harsh environments such as humidity, acids, and alkalis can cause the insulation material to age and break, leading to short circuits in track circuits and affecting train signal transmission. On the other hand, in terms of mechanical performance, due to the lack of an effective buffer structure, they are unable to adapt to the high-frequency vibration and thermal expansion and contraction deformation of rails caused by train operation, and are prone to loosening, wear, or even breakage, increasing railway line maintenance costs and safety hazards. Utility Model Content

[0003] This utility model mainly addresses the problems of poor insulation performance, weak mechanical adaptability, and inconvenient installation of existing rail clamps by providing a highly applicable rail insulation clamp that enables efficient and stable connection of rails of different specifications, thereby improving the safety and reliability of railway track systems.

[0004] The objective of this utility model is mainly achieved through the following solution:

[0005] A versatile rail insulating clamp includes a left clamp and a right clamp, both of which are elongated and symmetrically arranged. The left and right clamps are clamped between two adjacent rail sections and are fixedly connected by locking bolts and locking nuts.

[0006] The left and right clamping plates are arranged from the outside to the inside as a base layer, an insulating bearing layer, an elastic buffer layer, and a wear-resistant contact layer.

[0007] Preferably, the base layer is made of steel plate, and the outer side of the base layer has a longitudinal groove in the middle to facilitate the installation of locking bolts and locking nuts.

[0008] Preferably, the insulating load-bearing layer is a glass fiber reinforced epoxy resin layer.

[0009] Preferably, the elastic buffer layer is a nitrile rubber layer with embedded metal spring sheets.

[0010] Preferably, the wear-resistant contact layer is made of nitrile rubber and its surface is coated with a tungsten carbide coating.

[0011] Preferably, the tungsten carbide coating on the surface of the wear-resistant contact layer has a thickness of 0.5-1 mm.

[0012] Preferably, both the upper and lower ends of the wear-resistant contact layer are provided with protrusions that abut against the grooves on the side of the rail.

[0013] In summary, compared with the prior art, the present invention has the following beneficial technical effects:

[0014] (1) This utility model has excellent insulation performance. The insulation bearing layer is made of glass fiber reinforced epoxy resin layer, which has extremely high insulation resistance and good aging resistance. It can effectively isolate the current conduction between rails, ensure the stable operation of the track circuit, and reduce the risk of signal failure due to insulation failure.

[0015] (2) This utility model has strong mechanical adaptability. The elastic buffer layer is embedded in the nitrile rubber structure of the metal spring sheet, which can effectively absorb the vibration energy generated by the rail during train operation, buffer the deformation stress generated by the thermal expansion and contraction of the rail, reduce the rigid contact between the clamp and the rail, reduce the probability of loosening and wear, and extend the service life of the clamp.

[0016] (3) This utility model has good wear resistance. The tungsten carbide coating on the surface of the wear-resistant contact layer has extremely high hardness. At the same time, the nitrile rubber layer provides good elasticity and fit, ensuring close contact with the rail. In addition, the protrusions at both ends of the wear-resistant contact layer cooperate with the grooves on the side of the rail, further enhancing the connection stability between the clamp and the rail. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is the front view of this utility model;

[0019] Figure 3 This is a cross-sectional view of the left clamping plate in this utility model;

[0020] Figure 4 This is an installation diagram of the present invention mounted on a steel rail.

[0021] Attached reference numerals: 1-Left clamping plate, 2-Right clamping plate, 3-Rail, 4-Locking bolt, 5-Locking nut, 6-Base layer, 7-Insulating bearing layer, 8-Elastic buffer layer, 9-Wear-resistant contact layer, 10-Slot, 11-Protrusion. Detailed Implementation

[0022] The technical solution of this utility model will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings. It should be understood that the implementation of this utility model is not limited to the following embodiments, and any modifications and / or alterations made to this utility model will fall within the protection scope of this utility model.

[0023] like Figure 1 , 2 As shown in Figure 3, this utility model discloses a technical solution: a highly applicable rail insulating clamp, including a left clamp 1 and a right clamp 2. Both the left clamp 1 and the right clamp 2 are elongated and symmetrically arranged. The left clamp 1 and the right clamp 2 are clamped between two adjacent rails 3, and the left clamp 1 and the right clamp 2 are fixedly connected by locking bolts 4 and locking nuts 5.

[0024] The use of locking bolts 4 and locking nuts 5 facilitates installation and disassembly, and the tightness of the clamps can be flexibly adjusted according to actual needs to adapt to rail connections under different working conditions.

[0025] Specifically, the left clamping plate 1 and the right clamping plate 2 are arranged from the outside to the inside as follows: base layer 6, insulating bearing layer 7, elastic buffer layer 8, and wear-resistant contact layer 9.

[0026] The base layer 6 provides structural strength, the insulating load-bearing layer 7 provides electrical insulation, the elastic buffer layer 8 buffers vibration and deformation, and the wear-resistant contact layer 9 directly contacts the rail and resists wear. This multi-layer composite structure design effectively solves the problems of poor insulation performance and weak mechanical adaptability of traditional rail clamps, and significantly improves the comprehensive performance and applicability of rail insulating clamps.

[0027] Specifically, the base layer 6 is made of steel plate, and the outer side of the base layer 6 has a slot 10 in the middle longitudinal direction to facilitate the installation of locking bolts 4 and locking nuts 5; making full use of the high strength and high rigidity of steel plate, it provides solid structural support for the entire clamping plate and enhances the clamping plate's resistance to deformation when bearing train loads; the slot 10 design in the middle of the outer side of the base layer 6 precisely provides installation space for locking bolts 4 and locking nuts 5, making the installation process smoother. Compared with traditional clamping plates, the installation efficiency is greatly improved, and the ease of installation of the clamping plate is significantly enhanced.

[0028] Specifically, the insulating load-bearing layer 7 is made of glass fiber reinforced epoxy resin. Glass fiber has high strength and high modulus, while epoxy resin has excellent insulation and bonding properties. The composite layer formed by the combination of the two not only has extremely high insulation resistance, which can effectively isolate the current conduction between rails and ensure the stable operation of the track circuit, but also has good mechanical strength, which can withstand a certain amount of external force without being easily damaged, thus improving the durability of the insulation layer. Compared with traditional insulation materials, the glass fiber reinforced epoxy resin layer has better aging resistance. Even when exposed to harsh environments such as moisture, acids and alkalis for a long time, it can still maintain stable insulation performance, which greatly reduces the risk of signal failure due to insulation failure and ensures the safe and reliable operation of the railway track system.

[0029] Specifically, the elastic buffer layer 8 is a nitrile rubber layer with embedded metal spring sheets. Nitrile rubber has good elasticity, oil resistance, and wear resistance, effectively absorbing and buffering external impact forces. The metal spring sheets further enhance the elastic deformation capacity and recovery force of the buffer layer. During train operation, the rails will experience high-frequency vibration and thermal expansion and contraction deformation. The elastic buffer layer 8 can fully absorb these vibrational energies, buffer deformation stress, reduce rigid contact between the clamp and the rail, and avoid clamp loosening, wear, and breakage caused by stress concentration. At the same time, the oil resistance of nitrile rubber can prevent the clamp performance from being affected by train lubricating oil leakage, ensuring that the clamp can play a stable buffering role in the complex railway operating environment for a long time, extending the service life of the clamp and reducing the maintenance cost of railway lines.

[0030] Specifically, the wear-resistant contact layer 9 is made of nitrile rubber with a tungsten carbide coating. The nitrile rubber layer has excellent elasticity and conformability, ensuring close contact with the rail surface and guaranteeing contact stability. The tungsten carbide coating has extremely high hardness, with wear resistance several times that of ordinary materials, capable of withstanding the significant wear caused by frequent train rolling and friction. In actual use, even with long-term train operation, the wear-resistant contact layer 9 effectively resists wear, maintaining good contact between the clamp and the rail, and preventing loosening and performance degradation due to wear.

[0031] Specifically, the tungsten carbide coating on the surface of the wear-resistant contact layer 9 has a thickness of 0.5-1mm.

[0032] Both ends of the wear-resistant contact layer 9 extend inward and are provided with protrusions 11 that abut against the grooves on the side of the rail 3. These protrusions precisely engage with the grooves on the side of the rail 3 to form a mechanical limiting structure. This design greatly enhances the connection stability between the clamping plate and the rail, effectively preventing lateral or longitudinal displacement of the clamping plate relative to the rail during train operation, further improving the reliability of the rail insulating clamping plate. Even under conditions of frequent braking and starting of the train, the engagement of the protrusions 11 with the rail grooves ensures that the clamping plate always firmly holds the rail, guaranteeing the safe operation of the railway track system. It also reduces additional wear caused by clamping plate displacement, extending the service life of both the clamping plate and the rail.

[0033] This utility model provides a highly adaptable rail insulating clamp. In practical applications, the left clamp 1 and right clamp 2 are placed on both sides of two adjacent rail sections 3, respectively, so that the wear-resistant contact layer 9 is tightly fitted to the rail, and the protrusion 11 is embedded in the groove on the side of the rail. Then, through the slot 10 on the outer side of the base layer 6, the locking bolt 4 is passed through the left clamp 1, the rail 3, and the right clamp 2, and tightened using the locking nut 5. During the tightening process, the tightening degree of the locking bolt 4 can be adjusted according to the specific specifications of the rail and actual needs to ensure that the clamping force between the clamp and the rail is moderate.

[0034] Due to the presence of the elastic buffer layer 8, the vibration and deformation stress generated by the rail during train operation can be effectively buffered and absorbed, reducing the mutual wear between the clamp and the rail; the reliable insulation performance of the insulating bearing layer 7 ensures the normal operation of the track circuit; and the high wear resistance of the wear-resistant contact layer 9 ensures the stability and reliability of the clamp during long-term use.

[0035] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A versatile rail insulation clamp, characterized in that: It includes a left clamping plate (1) and a right clamping plate (2), both of which are long strips and are symmetrically arranged; the left clamping plate (1) and the right clamping plate (2) are clamped between two adjacent rails (3), and the left clamping plate (1) and the right clamping plate (2) are fixedly connected by locking bolts (4) and locking nuts (5); The left clamping plate (1) and the right clamping plate (2) are arranged from the outside to the inside as follows: base layer (6), insulating bearing layer (7), elastic buffer layer (8) and wear-resistant contact layer (9).

2. The rail insulating clamp with strong applicability according to claim 1, characterized in that: The base layer (6) is made of steel plate, and the outer side of the base layer (6) has a groove (10) in the middle longitudinal direction to facilitate the installation of locking bolts (4) and locking nuts (5).

3. The rail insulating clamp with strong applicability according to claim 1, characterized in that: The insulating bearing layer (7) is made of glass fiber reinforced epoxy resin.

4. The rail insulating clamp with strong applicability according to claim 1, characterized in that: The elastic buffer layer (8) is a nitrile rubber layer with embedded metal spring sheets.

5. The rail insulating clamp with strong applicability according to claim 1, characterized in that: The wear-resistant contact layer (9) is made of nitrile rubber and its surface is coated with tungsten carbide coating.

6. The rail insulating clamp with strong applicability according to claim 5, characterized in that: The tungsten carbide coating on the surface of the wear-resistant contact layer (9) has a thickness of 0.5-1 mm.

7. The rail insulating clamp with strong applicability according to claim 6, characterized in that: Both ends of the wear-resistant contact layer (9) extend inward and are provided with protrusions (11) that abut against the grooves on the side of the rail (3).

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