Jointed frog

Abstract

The application discloses a jointed frog, which comprises wing rail modules and a center rail module which are detachably installed on concrete frog sleepers; the center rail module comprises a long center rail and a short center rail, the long center rail and the short center rail are fixedly connected through thin head bolts, and inner top irons are installed between the long center rail and the short center rail; a fixed base plate assembly and a joint base plate assembly are detachably installed at the heel end of the center rail module, the fixed base plate assembly is installed at the heel end of the long center rail or the short center rail, and the joint base plate assembly is installed at the heel end of the short center rail or the long center rail; by flexibly switching the positions of the fixed base plate assembly and the joint base plate assembly, the short center rail or the long center rail can be kept in a straight and unbent state during normal work; the application has a reasonable structure, can select the long center rail or the short center rail with a higher use frequency during normal work to be fixed, improves the stability, prevents internal stress caused by deformation, and prolongs the service life of the center rail module.

Description

Technical Field

[0001] This invention relates to the field of turnout technology, specifically to a jointed turnout. Background Technology

[0002] As a key component of railway turnouts, movable point frogs are widely used in various railway lines due to their continuous track, smooth passage, and high reliability.

[0003] For example, the invention patent with authorization announcement number CN111335080B discloses a movable point frog long and short point rail misalignment device. This device, by setting a cover plate and an elongated hole, allows the cover plate to pass through the elongated hole of the long point rail and press against the web of the short point rail. When the bolts are tightened, the cover plate first presses against the web of the short point rail, while ensuring that there is a certain gap between the cover plate and the rail washer, and between the rail head and the rail bottom of the long and short point rails. The gap between the cover plate and the rail washer can be adjusted using an adjusting piece to ensure that part of the bolt tightening force is transmitted to the long point rail. The long and short point rails are allowed to misalign longitudinally at the splicing position, which solves the problem of the inability of the long and short point rails to misalign at the splicing position affecting the conversion resistance and reduces the conversion resistance between the long and short point rails.

[0004] However, in the aforementioned existing patents, the splicing of long and short frogs relies solely on bolts and shims to achieve limiting and slight misalignment. The frog heels all use fixed pads for constraint. Under the long-term operation conditions of the line, the long and short frogs continuously undergo elastic bending deformation and are subjected to cyclic alternating bending internal stress for a long time, which can easily lead to fatigue cracks in the frog body and a decrease in elastic performance, significantly shortening the overall service life of the frog.

[0005] Therefore, designing an articulated frog that can extend the service life of the frog is the technical problem to be solved in this application. Summary of the Invention

[0006] The purpose of this invention is to provide an articulated turnout to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: A type of articulated turnout includes: a wing rail module and a frog rail module detachably mounted on a concrete turnout sleeper; the frog rail module includes a long frog rail and a short frog rail, which are fixedly connected by thin-head bolts, and an inner top iron is installed between the long frog rail and the short frog rail; a fixed pad assembly and an articulated pad assembly are detachably mounted on the heel end of the frog rail module, the fixed pad assembly being installed on the heel end of the long frog rail or the heel end of the short frog rail, and the articulated pad assembly being installed on the heel end of the short frog rail or the heel end of the long frog rail. By flexibly switching the positions of the fixed pad assembly and the articulated pad assembly, the short frog rail or the long frog rail can maintain a straight and unbent state during normal operation.

[0008] As a preferred embodiment, the fixed pad assembly includes a continuous pad installed on the turnout sleeper, and a wedge-shaped pressure block is installed on the continuous pad by fastening bolts. The wedge-shaped pressure block is pressed against the bottom of the corresponding point rail of the point rail module.

[0009] As a preferred embodiment, the joint pad assembly includes a movable pad mounted on the turnout sleeper, a pair of fine-tuning clamp supports are mounted on the movable pad, and opening clamps are inserted into opposite sides of the fine-tuning clamp supports. An opening limiting sleeve is passed through the corresponding turnout rail of the turnout module, and the opening limiting sleeve abuts against the opening clamps on both sides. Rail web bolts are also passed between the fine-tuning clamp supports, and the fine-tuning clamp supports on both sides are locked by the rail web bolts.

[0010] As a preferred embodiment, a top iron assembly is also installed on the turnout sleeper. The top iron assembly includes a slide plate installed on the turnout sleeper, a top iron support installed on the slide plate, a top iron bolt threaded onto the top iron support, and an outer top iron installed at the end of the top iron bolt.

[0011] As a preferred embodiment, the wing rail assembly includes a large pad fixed to the turnout sleepers, spanning three sleepers. A pair of ultra-short wing rails are mounted on the large pad, with spacers installed between them. A support plate is also mounted on the large pad via turnout sleeper bolts, securing the rail bases of the ultra-short wing rails on opposite sides. Rail supports are also mounted on both sides of the large pad, with adjustable blocks mounted on the rail supports via turnout sleeper bolts. One end of the adjustable block is secured to the rail support, and the other end is secured to the outer rail base of the ultra-short wing rail. The combination of rail supports and adjustable blocks improves the connection strength between the ultra-short wing rails and the large pad, enhances the overall integrity of the frog, and ensures the strength of the frog in the hub transition zone.

[0012] As a preferred embodiment, the opposite sides of the top of the ultra-short wing rail have an inwardly inclined slope structure. By incorporating a top iron pad assembly, the core rail module can be further stabilized.

[0013] As a preferred embodiment, the frog rail module extends into the wing rail module and is fixedly connected to the turnout sleeper.

[0014] As a preferred embodiment, the large pad has electrical installation holes, the long core rail has an insulating connector for electrical connections installed in the middle, the toe end of the long core rail has a stepped structure, and the toe end of the long core rail is also equipped with an electrical pull rod connector and an electrical indicator rod bushing. The electrical installation holes, insulating connectors, electrical pull rod connectors, and electrical indicator rod bushings facilitate electrical connections.

[0015] Compared with the prior art, the beneficial effects of the present invention are: Using ultra-short wing rails can effectively reduce the size of the wing rail module, reduce the floor space, and facilitate disassembly and assembly; By increasing the number of turnout sleeper bolts, and in conjunction with spacer blocks and support plates, the overall integrity of the wing rail module is improved, significantly enhancing the strength of the key area of ​​the turnout (hub transition zone). The detachable mounting plate assembly prevents the core rail module from jumping or tilting, thus improving the stability of the core rail module. By using the joint pad assembly, the assembly positions of the fixed pad assembly and the joint pad assembly can be flexibly switched according to the actual running volume in the straight and curved directions of the line, so that the long or short core rails subjected to high-frequency forces can remain straight, thereby avoiding the internal stress caused by bending deformation of the long or short core rails during operation and extending the service life of the core rail module. By using the top iron assembly installed directly on the turnout sleeper, the deformation of the wing rail will not easily lead to insufficient accuracy, and the frog rail module can be better supported and positioned. Attached Figure Description

[0016] Figure 1 A schematic diagram of the overall first-form structure of an articulated frog; Figure 2 A schematic diagram of the overall second-morphology structure of a jointed frog; Figure 3 It is a type of articulated frog. Figure 2 Schematic diagram of the cross-sectional structure at point AA; Figure 4 A schematic diagram of a wing rail module structure for an articulated frog; Figure 5 It is a type of articulated frog. Figure 4 Schematic diagram of the cross-sectional structure at point BB; Figure 6 It is a type of articulated frog. Figure 4 Schematic diagram of the cross-sectional structure at the CC section; Figure 7 A schematic diagram of a large pad structure for an articulated frog; Figure 8 A schematic diagram of the top iron pad assembly structure of an articulated turnout; Figure 9 A schematic diagram of the core rail module structure of an articulated frog; Figure 10 A schematic diagram of a partial structure of the track module of an articulated frog; Figure 11 It is a type of articulated frog. Figure 10 Schematic diagram of the cross-sectional structure at the middle DD section; Figure 12 It is a type of articulated frog. Figure 10 Schematic diagram of the cross-sectional structure at the EE section.

[0017] In the diagram: 1. Large pad; 11. Ultra-short wing rail; 12. Support plate; 13. Turnout sleeper bolt; 14. Rail brace; 15. Adjustable gap block; 16. Electrical installation hole; 17. Spacer; 2. Long center rail; 21. Short center rail; 22. Inner top iron; 23. Thin-head bolt; 24. Insulating joint; 3. Fixed pad assembly; 31. Continuous pad; 32. Wedge-shaped pressure block; 4. Joint pad assembly; 41. Union pad; 42. Ultra-short fastener; 43. Fine-tuning clamp support; 44. Opening clamp; 45. Opening limiting sleeve; 5. Slide bed plate; 51. Top iron support; 52. Outer top iron; 53. Top iron bolt. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Example: Please refer to Figures 1-12 A type of articulated turnout includes: a wing rail module and a frog rail module detachably mounted on concrete turnout sleepers; the frog rail module includes a long frog rail 2 and a short frog rail 21, which are fixedly connected by thin-head bolts 23, and an inner top iron 22 is also installed between the long frog rail 2 and the short frog rail 21; an insulating connector 24 for electrical connection is installed in the middle of the long frog rail 2; a stepped structure is provided at the toe end of the long frog rail 2; an electrical tie rod connector and an electrical indicator rod bushing are also installed at the toe end of the long frog rail 2; a fixed pad assembly 3 and an articulated pad assembly 4 are detachably mounted at the heel end of the frog rail module; the fixed pad assembly 3 is installed at the heel end of the long frog rail 2 or the heel end of the short frog rail 21, and the articulated pad assembly 4 is installed at the heel end of the short frog rail 21 or the heel end of the long frog rail 2; by flexibly switching the positions of the fixed pad assembly 3 and the articulated pad assembly 4, the short frog rail 21 or the long frog rail 2 can maintain a straight and unbent state during normal operation.

[0020] In this embodiment, the fork-following rail structure is eliminated, which can effectively reduce the number of parts, reduce the difficulty of replacement, and eliminate stress concentration at the splice, making the force on the frog module and wing rail module more even and improving the service life of the frog. By adding an electrical structure, the applicability of the frog can be expanded to meet the usage requirements of overseas railway turnouts. The frog module is directly installed on the concrete turnout sleeper, which facilitates quick on-site installation and replacement.

[0021] The working principle of this invention is as follows: By setting the joint pad assembly 4 and the fixed pad assembly 3, the installation can be adjusted according to the actual line operation conditions (when the straight-line traffic volume increases, the fixed pad assembly 3 is installed on the long core rail 2 and the joint pad assembly is installed on the short core rail 21, thereby ensuring that the long core rail 2 remains straight and without bending under normal working conditions, avoiding internal stress caused by bending and reducing fatigue damage to the long core rail 2; when the curved-line traffic volume increases, the fixed pad assembly 3 is installed on the short core rail 21 and the joint pad assembly is installed on the long core rail 2, thereby ensuring that the short core rail 21 remains straight and without bending under normal working conditions, avoiding internal stress caused by bending and reducing fatigue damage to the short core rail 21). This allows for flexible adjustment of the installation position of the long core rail 2 and short core rail 21 according to the actual traffic frequency and normal stress conditions during line operation, ensuring that the core rail subjected to high-frequency stress remains straight and without bending during normal operation, eliminating the internal stress caused by long-term cyclic bending of the core rail from the root, thereby extending the service life of the core rail module; By adding an inner top iron between the long frog rail 2 and the short frog rail 21 and using thin-head bolts to complete the splicing limit, the lateral bearing stiffness of the splicing position can be improved; the frog is split into independent wing rail modules and frog rail modules to achieve modular and detachable assembly. Combined with concrete turnout sleepers, it solves the problems of the original long wing rail being unable to be split, requiring replacement of the whole when partially damaged, poor integration with turnout sleepers, and insufficient overall strength.

[0022] As a further embodiment, the fixed pad assembly 3 includes a continuous pad 31 installed on the turnout sleeper, and a wedge-shaped pressure block 32 is installed on the continuous pad 31 by fastening bolts. The wedge-shaped pressure block 32 is pressed against the bottom of the corresponding point rail of the point rail module.

[0023] The working principle of the fixed pad assembly 3 is as follows: During installation, the wedge-shaped pressure block 32 is pressed onto the bottom of the core rail, and then the wedge-shaped pressure block 32 is locked by the fastening bolts to complete the installation work, thereby fixing the corresponding core rail, preventing the core rail from jumping or tilting, and improving the stability of the core rail.

[0024] As a further embodiment, the joint pad assembly 4 includes a movable pad 41 mounted on the turnout sleeper. A pair of fine-tuning clamp supports 43 are mounted on the movable pad 41. Opening clamps 44 are inserted into opposite sides of the fine-tuning clamp supports 43. An opening limiting sleeve 45 is passed through the corresponding rail of the turnout module. The opening limiting sleeve 45 abuts against the opening clamps 44 on both sides. Rail web bolts are also passed between the fine-tuning clamp supports 43 to lock the fine-tuning clamp supports 43 on both sides.

[0025] The working principle of the joint pad assembly 4 is as follows: During installation, an opening limiting sleeve 45 is inserted on the corresponding core rail, and two opening clamps 44 are inserted into the fine-tuning clamp support 43. The opening clamps 44 are held in place by the opening limiting sleeve 45. Then, the fine-tuning clamp supports 43 on both sides are locked by the rail web bolts, thereby fixing the core rail. During the installation process, after the opening clamps 44 are installed, there is a certain opening between them and the core rail, so that they can swing with the core rail and thus achieve fine-tuning of the core rail angle.

[0026] As a further embodiment, a top iron assembly is also installed on the turnout sleeper. The top iron assembly includes a slide plate 5 installed on the turnout sleeper, a top iron support 51 installed on the slide plate 5, a top iron bolt 53 threaded onto the top iron support 51, and an outer top iron 52 installed at the end of the top iron bolt 53.

[0027] The working principle of the top iron assembly is as follows: by rotating the top iron bolt 53, the outer top iron 52 is brought closer to the outside of the core rail module and fits against the core rail, thereby supporting the core rail and improving the stability of the core rail module.

[0028] As a further embodiment, the wing rail assembly includes a large pad 1 fixed to the turnout sleepers. The large pad 1 has electrical installation holes 16. The large pad 1 spans three turnout sleepers. A pair of ultra-short wing rails 11 are mounted on the large pad 1, with spacers 17 installed between the ultra-short wing rails 11. A support plate 12 is also mounted on the large pad 1 via turnout sleeper bolts, and the support plate 12 clamps the rail bases on opposite sides of the ultra-short wing rails 11. Rail supports 14 are also mounted on both sides of the large pad 1. Adjustable blocks 15 are mounted on the rail supports 14 via turnout sleeper bolts 13. One end of the adjustable block 15 is clamped onto the rail support 14. The other end of 5 is pressed against the outer rail base of the ultra-short wing rail 11, thereby improving the connection strength between the ultra-short wing rail 11 and the large pad 1, enhancing the overall integrity of the frog, and ensuring the strength of the frog in the hub transition area. In this embodiment, the length of the ultra-short wing rail 11 is 3312 mm. Compared with the existing long wing rail, the ultra-short wing rail 11, together with the large pad 1 and the spacer 17, can more directly transfer the load to the turnout sleeper, effectively preventing the long wing rail from repeatedly bending when the vehicle passes, reducing the fatigue damage of the wing rail, and shortening the length of the wing rail while retaining the key working section can reduce the weak section of the wing rail and further improve the reliability of the wing rail module structure.

[0029] By selecting different specifications of adjustment blocks 15, the position of the ultra-short wing rail 11 can be adjusted laterally, which facilitates the adjustment of the track gauge. By increasing the number of turnout sleeper bolts 13, together with the spacer 17 and the support plate 12, the overall strength of the wing rail module in the hub conversion area is improved, thereby improving the overall integrity of the wing rail module. The use of ultra-short wing rail 11 can effectively reduce the footprint while reducing the risk of impact bending deformation of the ultra-short wing rail 11.

[0030] As a further solution, the opposite side of the top of the ultra-short wing rail 11 is an inwardly inclined slope structure. By setting the inwardly inclined slope structure, after the core rail module is installed, it can fit tightly with the core rail module to form a wedge mechanism, which can play a role in self-limiting and anti-jumping.

[0031] As a further option, the frog rail module extends into the wing rail module and is fixedly connected to the turnout sleeper.

[0032] In this invention, 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. These terms are used only to facilitate the description of the structural relationships of the various components or elements of this invention and do not specifically refer to any component or element in this invention. They should not be construed as limiting the invention.

Claims

1. A type of articulated turnout, characterized in that, include: Detachable wing rail module and frog rail module mounted on concrete turnout sleepers; The heart rail module includes a long heart rail (2) and a short heart rail (21). The long heart rail (2) and the short heart rail (21) are fixedly connected by thin-head bolts (23). An inner top iron (22) is also installed between the long heart rail (2) and the short heart rail (21). The heel end of the heart rail module is detachably equipped with a fixing pad assembly (3) and a joint pad assembly (4). The fixing pad assembly (3) is installed at the heel end of the long heart rail (2) or the heel end of the short heart rail (21). The joint pad assembly (4) is installed at the heel end of the short heart rail (21) or the heel end of the long heart rail (2). By flexibly switching the positions of the fixing pad assembly (3) and the joint pad assembly (4), the short heart rail (21) or the long heart rail (2) can be kept straight and without bending during normal operation.

2. The articulated frog according to claim 1, characterized in that: The fixed pad assembly (3) includes a continuous pad (31) installed on the turnout sleeper. A wedge-shaped pressure block (32) is installed on the continuous pad (31) by fastening bolts. The wedge-shaped pressure block (32) is pressed against the bottom of the corresponding center rail of the center rail module.

3. The articulated frog according to claim 2, characterized in that: The joint pad assembly (4) includes a movable pad (41) installed on the turnout sleeper. A pair of fine-tuning clamp supports (43) are installed on the movable pad (41). Opening clamps (44) are inserted on opposite sides of the fine-tuning clamp supports (43). An opening limiting sleeve (45) is passed through the corresponding rail of the rail module. The opening limiting sleeve (45) abuts against the opening clamps (44) on both sides. Rail web bolts are also passed between the fine-tuning clamp supports (43). The fine-tuning clamp supports (43) on both sides are locked by the rail web bolts.

4. A jointed frog according to claim 3, characterized in that: The turnout sleeper is also equipped with a top iron assembly, which includes a slide plate (5) installed on the turnout sleeper, a top iron support (51) installed on the slide plate (5), a top iron bolt (53) threaded onto the top iron support (51), and an outer top iron (52) installed at the end of the top iron bolt (53).

5. A jointed frog according to claim 4, characterized in that: The wing rail assembly includes a large pad (1) fixed on the turnout sleepers, the large pad (1) spanning three turnout sleepers, a pair of ultra-short wing rails (11) installed on the large pad, spacers (17) installed between the ultra-short wing rails (11), a support plate (12) is also installed on the large pad (1) by turnout sleeper bolts, the support plate (12) presses the rail base on the opposite side of the ultra-short wing rail (11); rail supports (14) are also installed on both sides of the large pad (1), and an adjustment block (15) is installed on the rail support (14) by turnout sleeper bolts (13), one end of the adjustment block (15) is pressed on the rail support (14), and the other end of the adjustment block (15) is pressed on the outer rail base of the ultra-short wing rail (11).

6. A jointed frog according to claim 5, characterized in that: The opposite side of the top of the ultra-short wing rail (11) is an inwardly inclined slope structure.

7. A jointed frog according to claim 6, characterized in that: The center rail module extends into the wing rail module and is fixedly connected to the turnout sleeper.

8. A jointed frog according to claim 7, characterized in that: The large pad (1) has an electrical installation hole (16) on it. The long core rail (2) has an insulating connector (24) for electrical connection installed in the middle. The toe end of the long core rail (2) has a stepped structure. The toe end of the long core rail (2) also has an electrical pull rod connector and an electrical indicator rod bushing.

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