Novel split type alloy steel combined frog
By designing a split alloy steel composite frog in the frog of a heavy-haul railway turnout and using alloy steel inserts, the problem of frequent replacement of vulnerable parts of the frog is solved, thereby reducing maintenance costs and extending service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA RAILWAY SHANQIAO GRP CO LTD
- Filing Date
- 2025-04-29
- Publication Date
- 2026-05-19
AI Technical Summary
The main components of the frogs of existing heavy-haul railway turnouts are severely worn and have short lifespans, resulting in high maintenance costs. Replacing the entire insert block further increases maintenance expenses.
Design a split-type alloy steel combined frog, with insert blocks set on the wing rail and the frog rail respectively, connected by high-strength bolts. The insert blocks are made of alloy steel, and vulnerable areas can be replaced individually to reduce maintenance costs.
With its modular design, only the inserts in the vulnerable parts need to be replaced, extending the life of the turnout, reducing maintenance costs, and improving stability and service life.
Smart Images
Figure CN224259120U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of forklift equipment technology, specifically a novel split-type alloy steel combined forklift. Background Technology
[0002] With the increasing freight volume of high-speed railways in China, existing trunk railways are bound to develop towards heavy-haul railways, leading to a significant increase in market demand for heavy-haul turnout products. Heavy-haul railways, characterized by high axle load, high density, ultra-large capacity, and short maintenance time, place extremely severe operational pressure on track turnout equipment. Under these operating conditions, the wear and damage of the frog, a key component of the turnout, is far greater than that of ordinary lines. Existing heavy-haul turnouts suffer from short lifespans and frequent replacements of their frogs, severely restricting the transport capacity of heavy-haul lines. Combined frogs are a widely used type of frog in domestic heavy-haul railways, meeting the requirements for both jointed and seamless track laying. The mainstream frog core rail material is alloy steel or forged high-manganese steel.
[0003] For example, the utility model patent with publication number CN112726296A discloses a split-type frog. This frog simplifies the structure of the combined frog, and only the insert block and the vulnerable parts of the frog rail are made of forged high manganese steel or alloy steel, reducing the weight of forged high manganese steel or alloy steel. During assembly, the connecting section is tightly fitted with the top and bottom of the fork rail and the top of the rail base by means of inclined surfaces, and the insert block is tightly fitted with the top and bottom of the wing rail and the top of the rail base by means of inclined surfaces. The remaining parts are provided with gaps, which reduces the machining allowance and lowers the manufacturing cost.
[0004] However, the insert of this device is an integral structure, and the degree of damage to the insert varies in the wear-prone areas of the core rail and the wing rail. When the degree of damage to one part cannot meet the usage requirements, the entire insert needs to be replaced, which increases maintenance costs. Utility Model Content
[0005] The purpose of this invention is to provide a novel split-type alloy steel combined fork to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] A novel split-type alloy steel composite fork includes: a wing rail, a wing rail insert block, a core rail, a core rail insert block, and a fork follower rail. The wing rail and fork follower rail are both fixed on a base plate. A core rail insert block is provided at the front end of the core rail, and a pair of fork follower rails are fixed at the rear end of the core rail. A pair of wing rails are provided on the outside of the core rail, and a pair of wing rail insert blocks are also provided on the opposite sides of the pair of wing rails. A spacer is provided between the wing rail insert blocks, and the wing rail insert blocks and the core rail insert blocks are connected at the theoretical tip of the core rail.
[0008] As a preferred embodiment, the angle between the inclined surface at the connection between the wing rail insert and the center rail insert and the center line of the turnout is 45°.
[0009] As a preferred embodiment, the outer shape of the wing rail inlay block is adapted to the inner rail waist of the wing rail, the upper part of the outer side of the wing rail inlay block is closely attached to the first inclined surface on the inner side of the wing rail head, and the lower part of the outer side of the wing rail inlay block is closely attached to the second inclined surface on the inner side of the wing rail bottom.
[0010] As a preferred embodiment, the outer shape of the core rail inlay block is adapted to the inner rail waist of the wing rail, the upper outer part of the core rail inlay block is closely fitted with the first inclined surface on the inner side of the wing rail head, and the lower outer part of the core rail inlay block is closely fitted with the second inclined surface on the inner side of the wing rail bottom.
[0011] As a preferred embodiment, the wing rail, wing rail insert block, and spacer are connected by multiple high-strength bolt pairs;
[0012] The wing rail, the core rail insert block, and the core rail are also connected by multiple high-strength bolt pairs.
[0013] As a preferred embodiment, the core rail and the core rail inlay block are connected at a 60mm section of the core rail, the bottom of the rear end of the core rail inlay block is provided with a groove, the front end of the core rail is provided with a boss, and the boss is inlaid in the groove.
[0014] As a preferred embodiment, a buffer pad is provided between the upper end of the protrusion and the groove.
[0015] As a preferred embodiment, the core rail, the wing rail insert, and the core rail insert are made of alloy steel.
[0016] As a preferred embodiment, the wing rail and fork rail are made of ordinary steel.
[0017] Compared with existing technologies, the advantages of this invention are: by setting wing rail inserts in the easily worn areas of the wing rail and core rails in the easily worn areas of the core rail, both wing rails and core rails can be protected. Furthermore, the wing rail inserts and core rail inserts are spliced together, so when either the wing rail insert or the core rail insert is damaged, only the corresponding insert needs to be replaced, effectively reducing maintenance costs. This invention has a reasonable structure, with separate inserts in the easily worn areas of the core rail and wing rail, facilitating individual replacement of the corresponding inserts and effectively reducing maintenance costs. Attached Figure Description
[0018] Figure 1 A schematic diagram of the overall three-dimensional structure of a novel split-type alloy steel combined frog;
[0019] Figure 2 A top view schematic diagram of a novel split-type alloy steel composite fork mounted on a pad.
[0020] Figure 3 A novel type of split-type alloy steel composite fork Figure 2 Sectional view at point AA;
[0021] Figure 4 A novel type of split-type alloy steel composite fork Figure 2 Sectional view at point BB;
[0022] Figure 5 A three-dimensional structural diagram of the wing rail and wing rail insert block positions of a novel split alloy steel composite frog.
[0023] Figure 6 A three-dimensional structural diagram of the wing rail insert and the center rail insert of a novel split alloy steel composite frog.
[0024] Figure 7 A three-dimensional structural diagram of the position of the center rail and the center rail insert block of a novel split alloy steel composite frog.
[0025] Figure 8 A three-dimensional structural diagram of the wing rail insert block of a novel split alloy steel composite frog;
[0026] Figure 9 A schematic diagram of the three-dimensional structure of the center rail insert block of a novel split alloy steel composite frog;
[0027] Figure 10 This is a schematic diagram of the three-dimensional structure of the center rail of a novel split-type alloy steel composite frog.
[0028] In the diagram: 1. Wing rail; 2. Wing rail insert; 3. Core rail insert; 31. Groove; 4. Core rail; 41. Boss; 5. Fork follow rail; 6. Pad; 7. High-strength bolt pair; 8. Buffer pad; 9. Spacer; 10. First inclined plane; 11. Second inclined plane. Detailed Implementation
[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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 skilled in the art without creative effort are within the protection scope of the present utility model.
[0030] Example: Please refer to Figures 1-10A novel split-type alloy steel composite frog includes: a wing rail 1, a wing rail insert block 2, a core rail 4, a core rail insert block 3, and a fork follower rail 5. The wing rail 1 and fork follower rail 5 are both fixed to a base plate 6. A core rail insert block 3 is provided at the front end of the core rail 4, and a pair of fork follower rails 5 are fixed at the rear end of the core rail 4. A pair of wing rails 1 are located on the outer side of the core rail 4, and a pair of wing rail insert blocks 2 are also provided on the opposite side of the pair of wing rails 1. A spacer block 9 is provided between the wing rail insert blocks 2. The wing rail insert blocks 2 and the core rail insert blocks 3 are connected at the theoretical tip of the core rail 4. The angle between the inclined surface at the connection point of the wing rail insert blocks 2 and the core rail insert blocks 3 and the centerline of the frog is 45°. In this embodiment, the connection point of the core rail insert block 3 and the core rail 4, as well as the end of the core rail 4, are located in the area of the base plate 6. The bottom surface of the core rail 4 abuts against the upper end of the base plate 6. During the frog's service life, the load can be transferred to the base plate 6, resulting in good stability.
[0031] The working principle of this utility model is as follows: By setting wing rail inlay block 2 in the wear-prone area of wing rail 1 and setting core rail inlay block 3 in the wear-prone area of core rail 4, wing rail 1 and core rail 4 can be protected. Furthermore, wing rail inlay block 2 and core rail inlay block 3 are spliced together. When wing rail inlay block 2 or core rail inlay block 3 is damaged, only the corresponding inlay block needs to be replaced, which can effectively reduce maintenance costs.
[0032] As a further embodiment, the outer shape of the wing rail insert 2 is adapted to the inner rail web of the wing rail 1. The upper outer part of the wing rail insert 2 is in close contact with the first inclined surface 10 on the inner side of the wing rail head, and the lower outer part of the wing rail insert 2 is in close contact with the second inclined surface 11 on the inner side of the wing rail bottom. Similarly, the outer shape of the center rail insert 3 is adapted to the inner rail web of the wing rail 1. The upper outer part of the center rail insert 3 is in close contact with the first inclined surface 10 on the inner side of the wing rail head, and the lower outer part of the center rail insert 3 is in close contact with the second inclined surface 11 on the inner side of the wing rail bottom. The wing rail insert 2 and the center rail insert 3 are both fitted to the wing rail, which improves the stability of the frog.
[0033] As a further embodiment, the wing rail 1, the wing rail insert block 2, and the spacer 9 are connected by multiple high-strength bolt pairs 7; the wing rail 1, the core rail insert block 3, and the core rail 4 are also connected by multiple high-strength bolt pairs 7.
[0034] As a further embodiment, the core rail 4 and the core rail inlay block 3 are connected at a 60mm section of the core rail 4. The bottom rear end of the core rail inlay block 3 is provided with a groove 31, and the front end of the core rail 4 is provided with a boss 41. The boss 41 is inlaid in the groove 31, and a buffer pad 8 is provided between the upper end of the boss 41 and the groove 31.
[0035] By setting a mating boss 41 and groove 31 between the center rail 4 and the center rail insert 3, the vertical jumping phenomenon between the center rail 4 and the center rail insert 3 when the train passes through the switch can be prevented. The wing rail insert 2 and the center rail insert 3 are both located inside the wing rail 1, and the wing rail insert 2 and the wing rail 1 are mated by the upper and lower inclined surfaces. The load of the wheel acting on the wing rail insert 2 and the center rail insert 3 is transferred to the pad 6 through the wing rail 1. The stability is good, and the assembly difficulty is reduced, and the quality of the single part is improved.
[0036] As a further embodiment, the center rail 4, wing rail insert 2, and center rail insert 3 are made of alloy steel, specifically high-manganese steel, while the wing rail 1 and fork follower rail 5 are made of ordinary steel. By using a center rail 4 and wing rail insert 2 made of high-manganese steel, their strength can be improved and the service life of the fork can be extended. The wing rail 1 and fork follower rail 5 made of ordinary steel can effectively reduce the cost of the fork.
[0037] In this utility model, terms such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "side", and "bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to facilitate the description of the structural relationship between the various components or elements of this utility model and do not specifically refer to any component or element in this utility model. They should not be construed as limiting this utility model.
Claims
1. A novel split-type alloy steel composite frog, characterized in that, include: Wing rail (1), wing rail insert (2), center rail (4), center rail insert (3), fork follower rail (5), wherein the wing rail (1) and fork follower rail (5) are all fixed on the pad plate (6); The front end of the core rail (4) is provided with a core rail inlay block (3), and the rear end of the core rail (4) is fixed with a pair of fork rails (5). A pair of wing rails (1) are provided on the outside of the core rail (4), and a pair of wing rail inlay blocks (2) are provided on the opposite side of the pair of wing rails (1). A spacer iron (9) is provided between the wing rail inlay blocks (2), and the wing rail inlay blocks (2) and the core rail inlay blocks (3) are connected at the theoretical tip of the core rail (4).
2. The novel split-type alloy steel composite fork according to claim 1, characterized in that: The angle between the inclined surface at the connection between the wing rail insert (2) and the center rail insert (3) and the center line of the fork is 45°.
3. A novel split-type alloy steel composite fork according to claim 2, characterized in that: The outer shape of the wing rail inlay block (2) is adapted to the inner rail waist of the wing rail (1). The upper outer part of the wing rail inlay block (2) is closely attached to the first inclined surface (10) on the inner side of the wing rail head. The lower outer part of the wing rail inlay block (2) is closely attached to the second inclined surface (11) on the inner side of the bottom of the wing rail (1).
4. A novel split-type alloy steel composite fork according to claim 3, characterized in that: The outer shape of the core rail inlay block (3) is adapted to the inner rail waist of the wing rail (1). The upper outer part of the core rail inlay block (3) is closely attached to the first inclined surface (10) on the inner side of the rail head of the wing rail (1), and the lower outer part of the core rail inlay block (3) is closely attached to the second inclined surface (11) on the inner side of the rail bottom of the wing rail (1).
5. A novel split-type alloy steel composite fork according to claim 4, characterized in that: The wing rail (1), wing rail insert (2), and spacer (9) are connected by multiple high-strength bolt pairs (7); The wing rail (1), the center rail insert (3), and the center rail (4) are also connected by multiple high-strength bolt pairs (7).
6. A novel split-type alloy steel composite fork according to claim 5, characterized in that: The core rail (4) and the core rail inlay block (3) are connected at the 60mm section of the core rail (4). The bottom of the rear end of the core rail inlay block (3) is provided with a groove (31), and the front end of the core rail (4) is provided with a boss (41). The boss (41) is inlaid in the groove (31).
7. A novel split-type alloy steel composite fork according to claim 6, characterized in that: A buffer pad (8) is provided between the upper end of the boss (41) and the groove (31).
8. A novel split-type alloy steel composite fork according to claim 7, characterized in that: The core rail (4), wing rail insert (2), and core rail insert (3) are made of alloy steel.
9. A novel split-type alloy steel composite fork according to claim 7, characterized in that: The wing rail (1) and fork rail (5) are made of ordinary steel.