Manganese steel welding wing rail combined frog

Abstract

The manganese steel welding wing rail combined frog comprises wing rails arranged on the two sides and a point rail located between the wing rails. The wing rail is formed by welding two common steel rail sections and a manganese steel rail section located between the two common steel rail sections, and the wing rail is provided with two weld joints. Two pieces of reinforced protective spacer iron are respectively arranged between the point rail and the two side wing rails; and fixed connection is realized through a connecting bolt assembly. The combined frog solves the technical problems that an existing combined frog material is low in using performance, large in manufacturing difficulty and short in service life. By optimizing the wing rail structure, the manufacturing difficulty is reduced, the material cost is saved, meanwhile, the abrasion resistance and impact resistance of the wing rail in the harmful space area of the combined frog are improved, the damage risk of the wing rail is reduced, and the service life of the combined frog is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of railway switch frogs, and in particular relates to a manganese steel welded wing rail combined frog. Background Art

[0002] At present, the alloy steel composite frogs used for railway tracks are fixed frogs. This structural form leads to harmful space in the frogs, forming a wheel load transfer area. The stress conditions of the wing rails in this area are poor, which can easily cause serious wear and damage, affecting the service life of the frogs and driving safety.

[0003] The existing wing rails of combined frogs include ordinary online heat-treated rails, which wear quickly; there are also multi-section alloy steel rails welded wing rails and two-section ordinary rails and wear-resistant material rails welded wing rails.

[0004] Among them, the material cost of alloy steel rails is high; when two-section ordinary rails and wear-resistant material rails are used to weld wing rails, the wear-resistant material rails required for the two-section welded wing rails are longer; when manganese steel rails are used, the manufacturing difficulty and cost are higher.

[0005] Under the prior art: Patent document with publication number CN201915302U provides a new type of welded wing rail combined frog for railway track, wherein the welded wing rail is ordinary steel rail + alloy steel rail + ordinary steel rail, and the wing rail toe weld is set between the frog throat and the theoretical tip. However, the alloy steel rail is insufficient in hardness, wear resistance, toughness, impact resistance, corrosion resistance and welding performance.

[0006] The patent document with publication number CN212560940U provides a reinforced wing rail alloy steel frog, in which the wing rail is a two-section welded structure, which is welded by a section of standard section ordinary steel rail and a section of alloy steel rail, and the weld is set in the range from the frog throat to the heart rail 20mm section corresponding to the wing rail. Similarly, the alloy steel rail is insufficient in hardness, wear resistance, toughness, impact resistance, corrosion resistance and welding performance.

[0007] The wing rails in the patent documents with publication numbers CN218643081U and CN220284495U are also two-section welded structures, which are welded by a section of ordinary steel rail with a standard section and a section of wear-resistant steel rail. The weld of the former is located between the front end of the wing rail and the throat of the frog, and the weld of the latter is set at the common load-bearing position of the heart rail and the wing rail. During the welding process, the two-section welded structure has only two stages, so the control of its welding quality is relatively simple, but this may also lead to poor stability of welding quality. In addition, during the welding process, the two-section welded structure may not be able to fully eliminate the gas and impurities in the welding process due to the relatively short welding time, resulting in the generation of welding defects such as pores and slag inclusions. Furthermore, the two-section welded structure may have uneven strength at the weld joint, especially at the junction of the weld and the base material, where there may be problems of stress concentration and reduced strength.

[0008] Therefore, in order to improve the performance of the wing rail material, reduce the manufacturing difficulty, and extend the service life of the frog, it is necessary to provide a new type of combined wing rail. In this regard, the following improved technical solution is proposed. Utility Model Content

[0009] The utility model solves the technical problem of providing a manganese steel welded wing rail combined frog, solving the technical problems of low performance of existing combined frog materials, great manufacturing difficulty and short service life.

[0010] The utility model adopts the following technical solution: a manganese steel welded wing rail combined frog, comprising wing rails arranged on both sides and a heart rail located between the wing rails; the wing rails are welded by two sections of ordinary steel rail sections and a manganese steel rail section located between the two sections of ordinary steel rail sections, and the wing rails have two welds; two pieces of reinforced protective spacer irons are respectively arranged between the heart rail and the wing rails on both sides; and fixed connection is achieved through a connecting bolt assembly.

[0011] Among the above technical solutions, as the preferred technical solution of the utility model: the wing rail is a wing rail formed by flash welding.

[0012] Among the above technical solutions, as the preferred technical solution of the utility model: the tip of the heart rail points to the frog toe end, and the opposite side of the heart rail is the frog heel end.

[0013] Among the above technical solutions, as the preferred technical solution of the utility model: the weld of the wing rail at the frog toe end is located at the front end of the frog throat away from the wheel load transfer area.

[0014] Among the above technical solutions, as the preferred technical solution of the utility model: the weld of the wing rail at the frog heel end is located at the 50mm section of the heart rail corresponding to the wing rail, and the weld at this location is between two pieces of reinforced protective spacer irons.

[0015] Among the above technical solutions, as the preferred technical solution of the utility model: a reinforcing protective spacer iron is provided in the weld area of ​​the front end of the frog throat of the wing rail; and the weld is located within the length range of the reinforcing protective spacer iron.

[0016] The advantages of this utility model compared with the prior art:

[0017] 1. The utility model optimizes the wing rail structure, reduces manufacturing difficulty, saves material costs, and at the same time improves the wear resistance and impact resistance of the wing rail in the harmful space area of ​​the combined frog, reduces the risk of wing rail damage, and extends the service life of the combined frog.

[0018] 2. The wing rail of the utility model is a three-section welded structure. The manganese steel rail section covers the harmful space area of ​​the frog, which can effectively improve the wear resistance and impact resistance of the wing rail, reduce the risk of wing rail damage, and extend the service life of the combined frog.

[0019] 3. The weld of the wing rail at the frog toe end of the utility model is located at the front end of the frog throat, far away from the wheel load transfer area, the contact force area between the wheel and the wing rail is large, and the weld at this location is protected by a reinforced protective spacer iron, so the safety of the weld is guaranteed.

[0020] 4. The weld of the wing rail at the frog heel end of the utility model is located at the 50mm section of the heart rail corresponding to the wing rail. Most of the wheels are pressed on the heart rail and are about to separate from the wing rail, so the rolling effect on the wing rail is small. In addition, the weld is located between two pieces of reinforced protective spacer iron, which has high safety.

[0021] 5. The three-section manganese steel welded wing rail of the utility model uses less manganese steel rail material, and the difficulty of processing and manufacturing the manganese steel rail is low, thus saving material costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is the front view of the utility model;

[0023] Figure 2 for Figure 1 An enlarged detail view of the longitudinal section of the present utility model;

[0024] In the figure: 2-1 ordinary rail section, 2-2 manganese steel rail section, 1-heart rail, 2-wing rail, 3-weld, 4-frog throat, 5-heart rail 50mm section, 6-reinforcement plate, 7-reinforced protective spacer iron, 8-connecting bolt assembly. DETAILED DESCRIPTION

[0025] The following will be combined with the attached embodiment of the utility model Figure 1-2, clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] (like Figure 1 A manganese steel welded wing rail combination frog, comprising wing rails 2 arranged on both sides and a heart rail 1 located between the wing rails 2; the wing rails 2 are welded by two ordinary steel rail sections 2-1 and a manganese steel rail section 2-2 located between the two ordinary steel rail sections 2-1, and the wing rails 2 have two welds 3.

[0027] The advantages of three-section wing rails over two-section wing rails are: the design of three-section wing rails allows for more precise track control and adjustment to suit different train speeds and line conditions. The three-section design can enhance the overall stability of the frog and reduce vibration and impact when the train passes by by optimizing the geometry and layout of the wing rails. The three-section wing rail can further reduce the harmful space of the frog through a more sophisticated design, reduce the risk of train derailment, and improve operational safety. By optimizing the layout and angle of the wing rails, the three-section wing rail can reduce the resistance of the train when passing through the frog, thereby increasing the speed of the train passing the frog. The design of the three-section wing rail can enhance the guidance of the wing rail to the wheel, ensuring that the train can maintain the correct direction of travel when passing through the frog; by reducing the impact and vibration when the train passes through the frog, the three-section wing rail can extend the service life of the frog and reduce the workload of maintenance and repair.

[0028] In addition, the advantage of manganese steel rail segment 2-2 over alloy steel rail segment is that manganese steel rail has high hardness and strong wear resistance due to its high manganese content; this characteristic enables manganese steel rail to maintain a flat surface under high strength and heavy load conditions, greatly extending its service life. In contrast, although alloy rails also have good wear resistance, they may not be as good as manganese steel rails in terms of wear resistance. Manganese steel rails have higher compressive strength than ordinary rails and can withstand greater loads; this characteristic gives manganese steel rails significant advantages in environments that need to withstand high pressure, such as heavy-duty railways. Although alloy rails also have high strength and toughness, they may be slightly inferior to manganese steel rails in terms of compressive strength. Manganese steel rails can maintain stable performance in harsh environments such as high temperature, heavy load and corrosion, and are not prone to deformation and damage; this stability makes manganese steel rails more reliable and safe in long-term operation fields such as railways. Although alloy rails also have good stability, they may not be as good as manganese steel rails in some extreme environments. Manganese steel rails are usually made by electric arc furnace melting and continuous casting technology. This process can achieve fine grain calming, refine the structure of manganese steel, and improve the toughness and ductility of the steel. This modern production process ensures the high-quality production of manganese steel rails.

[0029] On this basis: (combined with Figure 2 ) Two pieces of reinforced protective spacer irons 7 are respectively arranged between the center rail 1 and the wing rails 2 on both sides; including the reinforcement plate 6, a fixed connection is achieved by connecting bolt assemblies 8.

[0030] It should be noted that: compared with one piece, the provision of two pieces of reinforced protective spacer iron 7 can provide more uniform support between the heart rail and the wing rails on both sides, thereby enhancing the stability of the entire turnout structure. This stability helps to reduce the vibration and impact generated when the train passes, ensuring the smooth operation of the train. The design of the two pieces of reinforced protective spacer iron 7 can disperse the concentrated effect of the train wheel pressure on the turnout and improve the load-bearing capacity of the turnout; this means that even when a high-load or heavy-loaded train passes, the turnout can maintain good performance and reduce the need for damage and maintenance. The main function of the reinforced protective spacer iron 7 is to protect the turnout from damage and ensure the safe passage of the train. The provision of two pieces of spacer iron can further increase the protection of the turnout and reduce the risk of safety accidents such as train derailment due to turnout damage. Generally speaking, the provision of two pieces of reinforced protective spacer iron 7 may mean that the operation is more flexible and convenient when the spacer iron needs to be adjusted or replaced. For example, if one piece of spacer iron is damaged, it can be temporarily replaced with another piece of spacer iron, and then repaired or replaced. When two reinforced protective spacers 7 are provided, the accuracy and durability of the turnout can be further improved by precisely controlling the position and angle of the two spacers; such improvements in accuracy and durability help ensure that the train can maintain the correct direction of travel when passing through the turnout, while reducing safety hazards caused by wear or deformation of the turnout.

[0031] In the above embodiment, as a preferred embodiment of the utility model, the wing rail 2 is a wing rail formed by flash welding. Specifically, the welding method used is the flash butt welding method of high steel frog and rail provided in the patent document with publication number CN101474713B.

[0032] It should be noted that the wing rail 2 is made by flash welding. Flash welding is a method of heating and pressurizing to achieve atomic bonding between two workpieces in the solid state, and the welding quality is high. For components such as the wing rail 2 that have extremely high requirements for strength and stability, flash welding can provide a welded joint with a dense forging structure, which has good toughness and mechanical properties close to the rail parent material. During the flash welding process, the welded joint is normalized to ensure the grain refinement of the welding area, eliminate the uneven thermal stress inside the organization, and further improve the welding quality. In addition, the flash welding process has a high degree of automation, stable process, fast welding speed, and high production efficiency; this helps to produce the wing rail 2 on a large scale and efficiently to meet the needs of railway construction. Flash welding can be used in fixed workshops within the factory, or it can be made into a mobile flash welding locomotive for welding on the construction site; this makes flash welding widely applicable in the production of wing rails 2. Flash welding can adapt to the production requirements of wing rails 2 of different materials and specifications by adjusting welding parameters such as voltage, current, top forging force, etc.; during the flash welding process, the current size, flash time and moving distance of each stage can be accurately controlled to ensure the stability and reliability of the welding quality. The flash generated during the flash welding process can be used for preheating and gradual temperature increase, which is beneficial to reduce the local stress concentration caused by welding and improve the quality of the welded joint. During the flash welding process, no welding rod or other filling materials are required, which reduces the harmful gases and smoke that may be generated during the welding process, which is beneficial to protecting the environment and the health of workers. The welded joints of flash welding undergo strict quality inspections, such as ultrasonic flaw detection, to ensure that the welding quality meets the standard requirements and improve the safety of the wing rail 2.

[0033] In the above embodiments, as the preferred embodiment of the utility model: (such as Figure 1 The tip of the heart rail 1 points to the frog toe end, and the reverse end of the heart rail 1 is the frog heel end. The design that the tip of the heart rail 1 points to the frog toe end and the reverse end of the heart rail 1 is the frog heel end has significant technical advantages in improving driving safety, optimizing track structure, enhancing frog lateral stability, extending frog service life and increasing train passing speed. This design enables railway frogs to better meet the needs of modern railway transportation and improve the safety and efficiency of railway transportation.

[0034] In the above embodiment, as a preferred embodiment of the utility model, the weld 3 of the wing rail 2 at the frog toe end is located at the front end of the frog throat 4 away from the wheel load transfer area. The wheel and the wing rail 2 have a large contact force area, and the weld 3 at this location is protected by a reinforced protective spacer iron 7, so the safety of the weld 3 is guaranteed.

[0035] In the above embodiment, as a preferred embodiment of the utility model: the weld 3 of the wing rail 2 at the frog heel end is located at the 50mm section 5 of the heart rail corresponding to the wing rail, most of the wheel is pressed on the heart rail 1, and is about to separate from the wing rail 2, the rolling effect on the wing rail 2 is small, and the weld 3 at this location is between two pieces of reinforced protective spacer iron 7, which has high safety.

[0036] In the above embodiment, as a preferred embodiment of the utility model: the wing rail 2 is provided with a reinforcing protective spacer iron 7 in the weld 3 area at the front end of the frog throat 4; and the weld 3 is located within the length range of the reinforcing protective spacer iron 7.

[0037] Among them, the design of the reinforced protection spacer iron 7 can effectively support and protect the weld area, reduce the impact of vibration and impact on the weld caused by the train passing, thereby improving the strength and stability of the weld. By setting the weld 3 within the length range of the reinforced protection spacer iron 7, it can be ensured that the weld 3 is fully supported and protected, and the weld 3 is prevented from being deformed or cracked due to uneven force. The setting of the reinforced protection spacer iron 7 makes the structure of the frog more reasonable, which is conducive to reducing the harmful space at the frog position, reducing the wheel-rail interaction force when the train passes, and improving the stability of operation. At the same time, the length and shape of the reinforced protection spacer iron 7 can be optimized according to the specific situation of the frog to better meet the needs of train operation. The setting of the reinforced protection spacer iron 7 can enhance the lateral stability of the frog, so that the frog can maintain good stability when subjected to the lateral impact of the train, and reduce the damage and maintenance frequency of the frog. The weld 3 is located within the length range of the reinforced protection spacer iron 7, which can ensure that the weld 3 is fully supported and protected when subjected to lateral impact, thereby further improving the lateral stability of the frog. Strengthening the setting of the protective spacer iron 7 can ensure that the frog still maintains stable performance when bearing the high-speed passing of the train, and meet the requirements of modern railway transportation for high-speed and stable operation.

[0038] The working principle of the utility model is as follows: first, the design of the three-section wing rail allows adaptation to different train running speeds and line conditions. The overall stability of the frog can be enhanced, and the vibration and impact when the train passes can be reduced. The harmful space of the frog can be further reduced, the risk of train derailment can be reduced, and the operation safety can be improved. The resistance when the train passes through the frog can be reduced, and the speed of the train passing the frog can be increased. The guiding property of the wing rail 2 to the wheel can be enhanced to ensure that the train can maintain the correct direction of travel when passing through the frog. The service life of the frog can be extended, and the workload of maintenance and repair can be reduced.

[0039] Secondly, the manganese steel rail segment 2-2 has higher hardness, stronger wear resistance and smoother surface than the alloy steel rail segment, which greatly extends the service life. The compressive strength of the manganese steel rail segment 2-2 is higher than that of ordinary rails and can withstand greater loads. In harsh environments such as high temperature, heavy load and corrosion, the manganese steel rail segment 2-2 can maintain stable performance, is not prone to deformation and damage, and has higher reliability and safety. The manganese steel rail segment 2-2 can achieve fine grain sedation, refine the structure of manganese steel, and improve the toughness and ductility of the steel; ensuring the high-quality production of manganese steel rails.

[0040] Furthermore, the weld 3 of the wing rail 2 at the frog toe end is located at the front end of the frog throat 4, far away from the wheel load transfer area, the wheel and the wing rail 2 have a large contact force area, and the weld 3 at this location is protected by a reinforced protective spacer iron 7, so the safety of the weld 3 is guaranteed.

[0041] The weld 3 of the wing rail 2 at the frog heel end is located at the 50mm section 5 of the heart rail corresponding to the wing rail 2. Most of the wheels are pressed on the heart rail 1 and are about to separate from the wing rail 2. The rolling effect on the wing rail 2 is small, and the weld 3 is located between two reinforced protective spacers 7, which has high safety.

[0042] From the above description, it can be found that the utility model optimizes the structure of the wing rail 2, reduces the manufacturing difficulty, saves material costs, and at the same time improves the wear resistance and impact resistance of the wing rail in the harmful space area of ​​the combined frog, reduces the risk of damage to the wing rail 2, and extends the service life of the combined frog.

[0043] The wing rail 2 of the utility model is a three-section welded structure, and the manganese steel rail section 2-2 covers the harmful space area of ​​the frog, which can effectively improve the wear resistance and impact resistance of the wing rail 2, reduce the risk of damage to the wing rail 2, and extend the service life of the combined frog.

[0044] The weld of the wing rail 2 at the frog toe end of the utility model is located at the front end of the frog throat 4, far away from the wheel load transfer area, the contact force area between the wheel and the wing rail 2 is large, and the weld 3 at this location is protected by a reinforced protective spacer iron 7, so the safety of the weld 3 is guaranteed.

[0045] The weld 3 of the wing rail 2 at the frog heel end of the utility model is located at the 50mm section 5 of the heart rail corresponding to the wing rail 2. Most of the wheel is pressed on the heart rail 1 and is about to separate from the wing rail 2, so the rolling effect on the wing rail 2 is small. The weld 3 at this location is located between two pieces of reinforced protective spacer iron 7, so the safety is high.

[0046] The three-section manganese steel welded wing rail of the utility model uses less manganese steel rail material, has low difficulty in processing and manufacturing the manganese steel rail, and saves material cost.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification and equivalent replacement made within the spirit and principle of the present invention are included in the protection scope of the present invention.

[0048] It should be understood that although the present specification is described according to one implementation mode, the implementation mode does not include only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in this embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A manganese steel welded wing rail combined frog, comprising wing rails (2) arranged on both sides and a heart rail (1) located between the wing rails (2); characterized in that: The wing rail (2) is welded from two common steel rail sections (2-1) and a manganese steel rail section (2-2) located between the two common steel rail sections (2-1), and the wing rail (2) has two weld seams (3); two pieces of reinforcing protective spacer iron (7) are respectively arranged between the heart rail (1) and the wing rails (2) on both sides; and fixed connection is achieved through a connecting bolt assembly (8).

2. The manganese steel welded wing rail combined frog according to claim 1, characterized in that: The wing rail (2) is a wing rail formed by flash welding.

3. The manganese steel welded wing rail combined frog according to claim 1, characterized in that: The tip of the heart rail (1) points to the frog toe end, and the reverse side of the heart rail (1) is the frog heel end.

4. The manganese steel welded wing rail combined frog according to claim 1 or 2, characterized in that: The weld (3) of the wing rail (2) at the frog toe end is located at the front end of the frog throat (4) away from the wheel load transfer area.

5. The manganese steel welded wing rail combined frog according to claim 4, characterized in that: The weld (3) of the wing rail (2) at the frog heel end is located at the 50mm section (5) of the heart rail corresponding to the wing rail, and the weld (3) at this location is between two pieces of reinforced protective spacer iron (7).

6. The manganese steel welded wing rail combined frog according to claim 5, characterized in that: The wing rail (2) is provided with a reinforcing protective spacer iron (7) in the weld (3) area at the front end of the frog throat (4); and the weld (3) is located within the length range of the reinforcing protective spacer iron (7).

Images