A high rail joint casting with enhanced corrosion resistance

Abstract

The utility model discloses a kind of high rail connection castings of corrosion resistance enhanced, including rail body, the outer wall of the rail body is coated with corrosion-resistant alloy layer, multiple connecting clamping grooves are equidistantly arranged in the bottom end both sides of rail body inner wall, the bottom end both sides of rail body inner wall are equidistantly provided with triangular support block close to connecting clamping groove, and every triangular support block one end middle part is provided with fixed clamping groove. The utility model, by setting corrosion-resistant alloy layer, corrosion-resistant alloy layer covering in the outer wall of rail body, as a dense physical barrier, rail base body is isolated with outside humid, salt fog, snow-melting agent etc. Corrosion environment, under the wearing environment of track macadam bed, this layer of hard alloy coating can also effectively protect the waist, bottom etc. Key parts of rail body, prevent the occurrence of electrochemical corrosion, to avoid the early fatigue damage of rail caused by corrosion pit becomes crack source.

Description

Technical Field

[0001] This utility model relates to the field of high-speed rail track technology, and in particular to a high-speed rail track connecting casting with enhanced corrosion resistance. Background Technology

[0002] High-speed rail tracks are composed of multiple steel rails welded together. The function of the rails is to guide the wheels of locomotives and rolling stock, bear the enormous pressure of the wheels, and transmit it to the sleepers. During installation, pressure plates are installed on both sides of the rails to fix them in place. However, existing rails are narrower at the top and wider at the bottom, making them prone to damage over time, affecting their normal use. Furthermore, the pressure plates are prone to loosening over extended periods, impacting the stability of the rail installation. To address this, CN216338769U discloses a "connecting casting for high-speed rail tracks," which uses a triangular... The use of triangular support blocks can improve the structural strength of the rail body and increase its service life. The use of fixing slots and fixing posts can reduce the connection difficulty between the fixing plate and the triangular support block, making it easier to install and use the fixing plate. The use of the fixing plate, the first connecting screw hole, the second connecting screw hole and the fixing screw can squeeze and limit the pressure plate. By squeezing and limiting the pressure plate, the contact between the pressure plate and the rail body can be made tighter, which is conducive to improving the installation stability of the pressure plate and preventing the pressure plate from loosening during long-term use, which is beneficial to the stable use of the connecting casting.

[0003] However, the proposed solution does not take anti-corrosion measures for the rail body, especially the non-working surfaces such as the rail web and rail base that are not in direct contact with the wheels. While the rail body is subjected to huge alternating loads, the corrosion of its non-working surfaces will significantly aggravate corrosion fatigue and become the origin of fatigue cracks. This kind of damage that occurs from inside the rail "body" is highly concealed and extremely harmful, seriously weakening the overall load-bearing capacity and fatigue life of the rail, and is a potential hazard to traffic safety. Therefore, a high-speed rail track connection casting with enhanced corrosion resistance is proposed. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a high-speed rail track connection casting with enhanced corrosion resistance.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a high-speed rail track connecting casting with enhanced corrosion resistance, comprising a rail body, the outer wall of which is coated with a corrosion-resistant alloy layer, and multiple connecting slots evenly spaced on both sides of the bottom end of the inner wall of the rail body. Triangular support blocks are evenly spaced on both sides of the bottom end of the inner wall of the rail body near the connecting slots, and a fixing slot is formed in the middle of one end of each triangular support block. A fixing plate is provided in each fixing slot. The corrosion-resistant alloy layer is used to isolate corrosive media, fundamentally improving the durability of the rail body.

[0006] As a further description of the above technical solution:

[0007] Each of the connecting slots has two first connecting screw holes at its inner bottom. Each first connecting screw hole is threaded with a fixing screw. Each fixing screw has a pin hole on one side. Each pin hole has a slidably connected pin. The engagement of the pin hole and the pin forms a mechanical anti-loosening mechanism to prevent the fixing screw from loosening in a vibrating environment and to ensure the long-term reliability of the connection.

[0008] As a further description of the above technical solution:

[0009] Each of the fixed slots has guide grooves on both sides of its inner wall. Each fixed plate has a fixed pin fixedly connected to the opposite side. Each fixed pin is slidably connected in the corresponding guide groove. Each fixed plate has two second connecting screw holes on its upper surface. The guide grooves and fixed pins slide together to guide the fixed plate to be installed and positioned precisely vertically.

[0010] As a further description of the above technical solution:

[0011] Each of the fixed plates has a limiting cylinder fixedly connected to its upper surface, and each of the limiting cylinders has an anti-slip disc fixedly connected to its upper surface. Each of the anti-slip discs has a through hole on its upper surface. The inner diameter of each through hole is the same as the outer diameter of the corresponding fixing screw. The through hole is used to precisely guide the fixing screw and ensure that it is aligned with the second connecting screw hole.

[0012] As a further description of the above technical solution:

[0013] Each of the limiting cylinders has multiple limiting grooves on its outer wall. The pin passes through the limiting groove and is inserted into the pin hole on the side of the fixing screw, and one end of the pin extends out from the limiting groove on the opposite side to limit the pin.

[0014] As a further description of the above technical solution:

[0015] The inner diameters of the first connecting screw holes and the second connecting screw holes are the same, which allows the fixing screw to smoothly and coaxially pass through the second connecting screw hole and screw into the first connecting screw hole, ensuring the smoothness of the threaded connection and uniform force distribution, and avoiding the generation of additional bending stress.

[0016] As a further description of the above technical solution:

[0017] Each of the fixing screws passes through the corresponding second connecting screw hole and through hole, indicating that the fixing screws pass through the anti-slip plate and the fixing plate in sequence, thereby connecting the anti-slip plate, the fixing plate and the pressure plate into a whole and pressing them down synchronously to form a stable, multi-level pressing structure.

[0018] This utility model has the following beneficial effects:

[0019] 1. Compared with existing technologies, this corrosion-resistant high-speed rail track connecting casting, by setting a corrosion-resistant alloy layer, covers the outer wall of the rail body. As a dense physical barrier, it isolates the rail substrate from external corrosive environments such as humidity, salt spray, and de-icing agents. Under the wear environment of the track bed with crushed stone, this hard alloy coating can also effectively protect the key parts of the rail body such as the waist and bottom, prevent electrochemical corrosion, and thus avoid early fatigue damage to the rail caused by corrosion pits becoming crack sources.

[0020] 2. Compared with existing technologies, this corrosion-resistant high-speed rail track connection casting, through the setting of limiting cylinders, anti-slip discs, through holes, limiting grooves, pins, etc., after the fixing screw is tightened in place and the pin hole coincides with the corresponding limiting groove, the pin is passed through the limiting groove and inserted into the pin hole on the side of the fixing screw, and one end of the pin extends out from the limiting groove on the opposite side. Then, one end of the extended pin is bent to limit the fixing screw. Even if the fixing screw has a tendency to rotate in the opposite direction during long-term vibration, it will be immediately stopped by the pin, thus achieving effective mechanical anti-loosening and ensuring the long-term stability of the connection. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of a high-speed rail track connection casting with enhanced corrosion resistance proposed in this utility model;

[0022] Figure 2 This utility model proposes a corrosion-resistant high-speed rail track connection casting. Figure 1 - Enlarged view of section A;

[0023] Figure 3 This is a schematic diagram of the rail body of a high-speed rail track connection casting with enhanced corrosion resistance proposed in this utility model;

[0024] Figure 4Exploded view of a triangular support block and fixing plate for a corrosion-resistant high-speed rail track connection casting proposed in this utility model;

[0025] Figure 5 This is a schematic diagram of a fixing screw for a high-speed rail track connection casting with enhanced corrosion resistance, as proposed in this utility model.

[0026] Figure 6 This is a schematic diagram of a limiting cylinder for a high-speed rail track connection casting with enhanced corrosion resistance, as proposed in this utility model.

[0027] Legend:

[0028] 1. Rail body; 2. Corrosion-resistant alloy layer; 3. Connecting slot; 4. First connecting screw hole; 5. Triangular support block; 6. Guide groove; 7. Fixing plate; 8. Fixing post; 9. Second connecting screw hole; 10. Limiting cylinder; 11. Anti-slip disc; 12. Through hole; 13. Limiting groove; 14. Pin; 15. Fixing screw; 16. Pin hole. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Reference Figures 1 to 6This utility model provides a corrosion-resistant high-speed rail track connection casting: It includes a rail body 1. Multiple connecting slots 3 are equidistantly arranged on both sides of the bottom of the inner wall of the rail body 1. Triangular support blocks 5 are equidistantly arranged on both sides of the bottom of the inner wall of the rail body 1 near the connecting slots 3. A fixing slot is formed in the middle of one end of each triangular support block 5. A fixing plate 7 is provided in each fixing slot. Two first connecting screw holes 4 are formed at the bottom of the inner wall of each connecting slot 3. A fixing screw 15 is threaded into each first connecting screw hole 4. Guide grooves 6 are formed on both sides of the inner wall of each fixing slot. A fixing post 8 is fixedly connected to the side of each fixing plate 7 that is furthest away from it. Each fixing post 8 slides... The dynamic connection is in the corresponding guide groove 6. Each fixed plate 7 has two second connecting screw holes 9 on its upper surface. The inner diameter of the multiple first connecting screw holes 4 is the same as the inner diameter of the second connecting screw holes 9. Each fixing screw 15 passes through the corresponding second connecting screw hole 9 and through hole 12. The fixing screw 15 is passed through the second connecting screw hole 9 on the fixed plate 7 and the through hole 12 on the anti-slip plate 11 in sequence, and finally screwed into the first connecting screw hole 4 at the bottom of the connecting groove 3. The fixing screw 15 is tightened with a tool. The downward force generated by the fixing screw 15 is transmitted to the fixed plate 7 through the anti-slip plate 11 and the limiting cylinder 10, thereby pressing the fixed plate 7 and the pressure plate tightly into the connecting groove 3 to form a stable and reliable connection.

[0031] To improve corrosion resistance, the outer wall of the rail body 1 is coated with a corrosion-resistant alloy layer 2. This corrosion-resistant alloy layer 2, covering the outer wall of the rail body 1, acts as a dense physical barrier, isolating the rail substrate from external corrosive environments such as humidity, salt spray, and de-icing agents. Under the wear environment of the track bed with crushed stone, this hard alloy coating can also effectively protect the key parts of the rail body 1, such as the waist and bottom, and prevent electrochemical corrosion, thereby avoiding early fatigue damage to the rail caused by corrosion pits becoming crack sources.

[0032] Each fixing screw 15 has a pin hole 16 on one side, and a pin 14 is slidably connected in each pin hole 16. A limiting cylinder 10 is fixedly connected to the upper surface of each fixing plate 7, and an anti-slip disc 11 is fixedly connected to the upper surface of each limiting cylinder 10. A through hole 12 is formed on the upper surface of each anti-slip disc 11, and the inner diameter of each through hole 12 is the same as the outer diameter of the corresponding fixing screw 15. Multiple limiting grooves 13 are formed on the outer wall of each limiting cylinder 10. When the fixing screw 15 is screwed... After tightening the pin and aligning the pin hole 16 with the corresponding limiting groove 13, pass the pin 14 through the limiting groove 13 and insert it into the pin hole 16 on the side of the fixing screw 15. Then, extend one end of the pin 14 from the limiting groove 13 on the opposite side. Bend one end of the extended pin 14 to limit the fixing screw 15. Even if the fixing screw 15 tends to rotate in the opposite direction during long-term vibration, it will be immediately stopped by the pin 14, thus achieving effective mechanical anti-loosening and ensuring the long-term stability of the connection.

[0033] Working principle: The corrosion-resistant alloy layer 2 covering the outer wall of the rail body 1 acts as a dense physical barrier, isolating the rail substrate from external corrosive environments such as humidity, salt spray, and de-icing agents. Under the abrasive conditions of the ballast track bed, this hard alloy coating effectively protects key parts of the rail body 1, such as the waist and bottom, preventing electrochemical corrosion and thus avoiding early fatigue damage to the rail caused by corrosion pits becoming crack sources. The fixing screw 15 is passed sequentially through the second connecting screw hole 9 on the fixing plate 7, the through hole 12 on the anti-slip disc 11, and finally screwed into the first connecting screw hole 4 at the bottom of the connecting slot 3. The fixing screw 15 is then tightened using a tool. The downward force generated by the fixing screw 15... The tension is transmitted to the fixing plate 7 through the anti-slip plate 11 and the limiting cylinder 10, thereby pressing the fixing plate 7 and the pressure plate tightly into the connecting groove 3 to form a stable and reliable connection. After the fixing screw 15 is tightened in place and the pin hole 16 is aligned with the corresponding limiting groove 13, the pin 14 is passed through the limiting groove 13 and inserted into the pin hole 16 on the side of the fixing screw 15, and one end of the pin 14 extends out from the limiting groove 13 on the opposite side. Then, one end of the extended pin 14 is bent to limit the fixing screw 15. Even if the fixing screw 15 has a tendency to rotate in the opposite direction due to long-term vibration, it will be immediately stopped by the pin 14, thereby achieving effective mechanical anti-loosening and ensuring the long-term stability of the connection.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A corrosion-resistant high-speed rail track connection casting, comprising a rail body (1), characterized in that: The outer wall of the rail body (1) is coated with a corrosion-resistant alloy layer (2). Multiple connecting slots (3) are equally spaced on both sides of the bottom of the inner wall of the rail body (1). Triangular support blocks (5) are equally spaced on both sides of the bottom of the inner wall of the rail body (1) near the connecting slots (3). A fixing slot is provided in the middle of one end of each triangular support block (5). A fixing plate (7) is provided in each fixing slot.

2. The corrosion-resistant high-speed rail track connecting casting according to claim 1, characterized in that: Each of the connecting slots (3) has two first connecting screw holes (4) at its inner bottom. Each of the first connecting screw holes (4) is threaded with a fixing screw (15). Each of the fixing screws (15) has a pin hole (16) on one side. Each of the pin holes (16) is slidably connected with a pin (14).

3. A corrosion-resistant high-speed rail track connecting casting according to claim 2, characterized in that: Each of the fixed slots has a guide groove (6) on both sides of its inner wall. Each fixed plate (7) has a fixed pin (8) fixedly connected to the side away from it. Each fixed pin (8) is slidably connected in the corresponding guide groove (6). Each fixed plate (7) has two second connecting screw holes (9) on its upper surface.

4. A corrosion-resistant high-speed rail track connecting casting according to claim 3, characterized in that: Each of the fixed plates (7) has a limiting cylinder (10) fixedly connected to its upper surface, and each of the limiting cylinders (10) has an anti-slip disc (11) fixedly connected to its upper surface. Each of the anti-slip discs (11) has a through hole (12) on its upper surface, and the inner diameter of each through hole (12) is the same as the outer diameter of the corresponding fixing screw (15).

5. A corrosion-resistant high-speed rail track connecting casting according to claim 4, characterized in that: Each of the limiting cylinders (10) has multiple limiting grooves (13) on its outer wall.

6. A corrosion-resistant high-speed rail track connecting casting according to claim 3, characterized in that: The inner diameters of the first connecting screw holes (4) and the second connecting screw holes (9) are the same.

7. A corrosion-resistant high-speed rail track connecting casting according to claim 4, characterized in that: Each of the fixing screws (15) passes through the corresponding second connecting screw hole (9) and through hole (12).

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