Switch rail structure for transformation
By adding an extension section at the tip of the pointed rail and performing cutting treatment, combined with the elastic bendable section and transitional arc design, the problem that the pointed rail cannot overlap the roller in the early switch structure is solved, rolling friction is achieved, pulling force is reduced, and the effect of switch transformation is improved.
Patent Information
- Application Number
- CN202422198119.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-09
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-09-09
AI Technical Summary
The early switch structure design was limited, and the fixation of the foundation under the rail resulted in high cost of transformation of the track bed, and the tip of the pointed rail was too far away from the roller sliding bed board, which could not be effectively overlapped, resulting in a large pulling force.
A modified pointed rail structure is designed. By adding an extended section at the tip of the pointed rail and cutting it to make it lower than the original rail head, ensuring that the pointed rail can overlap on the roller. At the same time, an elastic bendable section and transition arc are used to reduce the moment of inertia, and rolling friction is achieved to reduce the pulling force.
Without changing the actual position of the pointed rail, the normal application of the roller is achieved, reducing the pulling force and improving the effect of switch transformation.
Smart Images
Figure CN223074522U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of railway tracks, and more specifically, to a switch rail structure for transformation. Background Art
[0002] Due to insufficient technical level, the early switch structure design was restricted. Coupled with the fact that the sub-rail foundation mostly adopted short sleeper ballast beds with poor laying accuracy, some early switches had the problem of relatively large actuating force and urgently needed to improve the switch performance through transformation. However, due to the fixed sub-rail foundation and high cost of ballast bed transformation, it was only possible to upgrade the switch structure on the basis of the existing ballast bed, which restricted the switch transformation design.
[0003] Currently, roller slide plates are added on both sides of the switch traction point to reduce the actuating force. However, due to the limitation of the original structure, the length of the switch rail tip on the slide plate is short, and the switch rail cannot be placed on the rollers. When actuating, the rollers cannot play a role. Therefore, it is necessary to design a switch rail structure suitable for switch transformation. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a switch rail structure for transformation to improve the above problems. To achieve the above purpose, the technical solution adopted by the utility model is as follows:
[0005] A switch rail structure for transformation, comprising:
[0006] An original switch rail laid on one side of the stock rail;
[0007] A roller slide plate, which includes a backing plate and rollers arranged on the backing plate, and the tip of the original switch rail overlaps on the backing plate;
[0008] A tip extension section connected to the tip of the original switch rail, and the tip extension section overlaps on the rollers, and the upper surface of the tip extension section is lower than the rail head of the original switch rail.
[0009] Optionally, the length of the tip extension section is 70 - 100 mm.
[0010] Optionally, the tip extension section is at least 50 mm lower than the rail head of the stock rail.
[0011] Optionally, a first transition arc is provided on the upper surface of the connection between the original switch rail and the tip extension section, and the radius of the first transition arc is 12 - 18 mm.
[0012] Optionally, the original switch rail includes an elastic bendable section near the heel end of the original switch rail, and the rail bottom width of the elastic bendable section is smaller than the rail bottom width of the heel end.
[0013] Optionally, the width of the rail bottom of the elastic bendable section is the same as the width of the rail head.
[0014] Optionally, a second transition arc is provided on the side of the connection between the elastic bendable section and the original switch rail of its previous section, and the radius of the second transition arc is 230 - 270 mm;
[0015] A third transition arc is provided on the side of the connection between the elastic bendable section and the original switch rail of its subsequent section; the radius of the third transition arc is 1950 - 2050 mm.
[0016] Optionally, the heel end of the original switch rail has a 60 kg / m rail profile.
[0017] Optionally, at least three bolt holes are provided on the original switch rail.
[0018] Optionally, the distance from the axis of the bolt hole to the rail bottom of the original switch rail is 63 - 64 mm.
[0019] The beneficial effects of the present utility model are as follows:
[0020] The present application provides a switch rail structure, which can be used in the transformation project of turnouts on existing railway lines. To solve the problem that the distance between the tip of the switch rail of the turnout on the old line and the front end of the roller slide plate is relatively long, and the switch rail cannot overlap on the roller, the present application extends the tip of the switch rail to ensure that the switch rail can overlap on the roller. At the same time, to ensure that the actual position of the tip of the switch rail remains unchanged, the tip extension section is planed downward so that its height does not affect the actual docking position of the switch rail and the stock rail. In this way, the normal application of the roller is realized without changing the actual tip of the switch rail.
[0021] Other features and advantages of the present utility model will be described in the subsequent specification, and some of them will be obvious from the specification or understood by implementing the embodiments of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.
[0023] Figure 1 It is a side view of the tip of the switch rail structure for transformation in the embodiment;
[0024] Figure 2 It is a top view of the tip structure of the switch rail structure for transformation in the embodiment;
[0025] Figure 3 Schematic diagram of the extended switch rail section and stock rail structure in the embodiment;
[0026] Figure 4 Schematic diagram of the original switch rail and stock rail structure in the embodiment;
[0027] Figure 5 Schematic diagram of the cross-section of the bottom of the elastic bendable section after planing and cutting;
[0028] Symbol description: 100, original switch rail; 110, first transition arc; 120, bolt hole; 200, roller slide plate; 210, backing plate; 220, roller; 300, tip extension section; 400, elastic bendable section; 410, second transition arc; 420, third transition arc; 500, heel end; 510, transition section; 600, stock rail. Specific implementation manners
[0029] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and illustrated herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the present utility model to be protected, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model.
[0030] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. At the same time, in the description of the present utility model, the terms "first", "second", etc. are only used for distinguishing descriptions and cannot be construed as indicating or implying relative importance.
[0031] See Figure 1 and Figure 2 , this application provides a switch rail structure for transformation, including:
[0032] An original switch rail 100, the original switch rail 100 is laid on one side of the stock rail 600;
[0033] A roller slide plate 200, the roller slide plate 200 includes a backing plate 210 and rollers 220 arranged on the backing plate 210, and the tip of the original switch rail 100 overlaps on the backing plate 210;
[0034] The tip extension section 300 is connected to the tip of the original point rail 100 , and the tip extension section 300 is overlapped on the roller 220 , and the upper surface of the tip extension section 300 is lower than the rail head of the original point rail 100 .
[0035] The original point rail 100 adopts a 60AT2 rail type. As an optional implementation, the length of the tip extension section 300 is 70-100 mm. In this embodiment, the length of the tip extension section 300 is preferably 80 mm.
[0036] The roller 220 on the pad 210 is higher than the planar mounting surface on the pad 210, and the tip extension section 300 is supported by the roller 220. At this time, the tip of the original point rail 100 is no longer in contact with the pad 210, so that the movement between the point rail and the pad 210 changes from sliding friction to rolling friction, thereby reducing the force required to move the point rail.
[0037] In the prior art, in order to convert the sliding friction of the switch point rail into rolling friction, a roller slide bed 200 is set under the switch point rail. However, due to the limitation of the original layout, the tip of the switch point rail of the old line is far away from the front end of the roller slide bed 200, and the switch point rail cannot be overlapped on the roller 220, resulting in the roller 220 being unable to function. In order to achieve the transformation of the old line switch, the present application has extended the tip of the switch point rail to ensure that the switch point rail can be overlapped on the roller 220. At the same time, in order to ensure that the position of the switch point rail tip remains unchanged, the rail head is planed. In this way, the normal application of the roller 220 is achieved without changing the actual tip of the switch point rail.
[0038] See also Figure 3 and Figure 4 As an optional embodiment, the upper end of the tip extension section 300 is planed, and the upper surface after planing is a plane, and the upper surface is at least 50 mm lower than the top surface of the rail head of the base rail 600. The original point rail 100 is planed according to conventional design, and the bottom and side profiles of the tip extension section 300 are consistent with the profiles of the original point rail 100.
[0039] As an optional embodiment, a first transition arc 110 is provided on the upper surface of the connection between the original point rail 100 and the tip extension section 300, and the radius of the first transition arc 110 is 12-18 mm, preferably 15 mm.
[0040] To minimize the lateral moment of inertia of the switch rail, Figure 2 and Figure 5As shown, the original point rail 100 includes an elastic bendable section 400 , which is close to the heel end 500 of the original point rail 100 , and the rail bottom width of the elastic bendable section 400 is smaller than the rail bottom width of the heel end 500 .
[0041] As an optional implementation, the rail bottom width of the elastic bendable section 400 is the same as the rail head width, and preferably both widths are 72 mm. The cutting amount of the rail bottom of the elastic bendable section 400 in this embodiment is larger than that of the existing point rails, which can minimize the lateral moment of inertia.
[0042] As an optional embodiment, a second transition arc 410 is provided on the side of the connection between the elastic bendable section 400 and the original point rail 100 of the front section thereof, and the radius of the second transition arc 410 is 230-270 mm, and preferably 250 mm in this embodiment;
[0043] A third transition arc 420 is provided on the side of the connection between the elastic bendable section 400 and the original point rail 100 of its rear section; the radius of the third transition arc 420 is 1950-2050 mm, and 2000 mm is preferred in this embodiment.
[0044] As an optional implementation, in order to ensure that the heel end 500 is connected with the guide curve rail, the heel end 500 of the original point rail 100 is forged into a 60kg / m rail profile, and a transition section 510 is designed in front of the heel end 500 to make a transition connection between the 60kg / m heel end 500 and the 60AT2 curve point rail.
[0045] Through the design of the elastic bendable section 400 and the heel end 500, the lateral moment of inertia of the elastic bendable section 400 of the point rail can be effectively reduced, thereby reducing the pulling force of the point rail.
[0046] As an optional embodiment, at least three bolt holes 120 are provided on the original point rail 100. The distance from the axis of the bolt hole 120 to the bottom of the original point rail 100 is 63-64 mm, preferably 63.3 mm in this embodiment. The bolt hole 120 on the original point rail 100 is the traction point for pulling, and the traction mechanism is connected to the bolt hole 120 to realize the pulling of the original point rail 100.
[0047] The selection and design of the point rail in the present application can minimize the lateral moment of inertia of the point rail, and has a significant effect on reducing the point rail switching force. It can be applied to the turnout reconstruction of existing railway lines when the point rail switching force is large.
[0048] The above are only specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of changes or substitutions, which should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.
Claims
1. A switch rail structure for transformation, characterized in that Comprising: An original switch rail (100), the original switch rail (100) being laid on one side of a stock rail (600); A roller slide plate (200), the roller slide plate (200) comprising a backing plate (210) and rollers (220) provided on the backing plate (210), the tip of the original switch rail (100) being lapped on the backing plate (210); A tip extension section (300), the tip extension section (300) being connected to the tip of the original switch rail (100), and the tip extension section (300) being lapped on the rollers (220), the upper surface of the tip extension section (300) being lower than the rail head of the original switch rail (100).
2. The modified switch rail structure according to claim 1, characterized in that, The length of the tip extension section (300) is 70 - 100 mm.
3. The modified switch rail structure according to claim 1, characterized in that, The tip extension section (300) is at least 50 mm lower than the rail head of the stock rail (600).
4. A switch rail structure for reconstruction according to claim 1, wherein, A first transition arc (110) is provided on the upper surface at the connection between the original switch rail (100) and the tip extension section (300), and the radius of the first transition arc (110) is 12 - 18 mm.
5. The modified switch rail structure according to claim 1, characterized in that, The original switch rail (100) comprises an elastic bendable section (400), the elastic bendable section (400) being close to the heel end (500) of the original switch rail (100), and the rail bottom width of the elastic bendable section (400) being smaller than the rail bottom width of the heel end (500).
6. The modified switch rail structure according to claim 5, characterized in that, The rail bottom width of the elastic bendable section (400) is the same as the rail head width.
7. The modified switch rail structure according to claim 5, characterized in that, A second transition arc (410) is provided on the side surface at the connection between the elastic bendable section (400) and the previous section of the original switch rail (100), and the radius of the second transition arc (410) is 230 - 270 mm; A third transition arc (420) is provided on the side surface at the connection between the elastic bendable section (400) and the subsequent section of the original switch rail (100); the radius of the third transition arc (420) is 1950 - 2050 mm.
8. The modified tongue rail structure according to claim 1, characterized in that, The heel end (500) of the original switch rail (100) has a 60 kg / m rail profile.
9. The modified switch rail structure according to claim 1, characterized in that, At least three bolt holes (120) are provided on the original switch rail (100).
10. A tongue rail structure for transformation according to claim 9, characterized in that, The distance from the axis of the bolt hole (120) to the rail bottom of the original switch rail (100) is 63 - 64 mm.