Sleeper for tunnel and track structure thereof

Abstract

The utility model discloses a sleeper for a tunnel and a track structure of the sleeper. The sleeper comprises a sleeper middle part and sleeper edge parts symmetrically distributed at the two ends of the sleeper middle part, and rail bearing tables are arranged on the sleeper edge parts; the maximum height of the pillow edge part is higher than that of the pillow middle part; the maximum height difference value of the pillow edge part and the pillow middle part is 20-50mm; the bottom width of the pillow edge part is greater than that of the pillow middle part; and the width difference between the bottom surfaces of the pillow edge parts and the pillow middle part is 20-40mm. The utility model provides a sleeper for a tunnel so as to solve the problem that in the prior art, the construction environment in the tunnel is complex, the height is limited, and the ventilation condition is poor, so that the construction and maintenance difficulty of a track structure is large, and the purposes of reducing ballast bed pollution in the tunnel, reducing the construction and maintenance difficulty and the like are achieved.

Description

Technical Field

[0001] This utility model relates to the field of track technology, specifically to a tunnel sleeper and its track structure. Background Technology

[0002] Railway track structure includes rails, sleepers, ballast, fasteners, etc. Its main function is to support train operation, transfer loads to the underlying foundation, and ensure the smoothness and safety of train operation. As an important component of the track structure, the performance of sleepers directly affects the performance of railway transportation, especially in tunnels, where higher technical requirements are placed on sleepers. Existing track structures in tunnels have the following shortcomings in complex environments: (1) The construction environment in tunnels is complex and height is limited, making the construction and maintenance of track structures more difficult; (2) The dynamic loads generated when trains pass through repeatedly act on the ballast, causing severe ballast pulverization; (3) Poor ventilation conditions in tunnels allow pulverized coal ash to easily fall into the track structure, leading to ballast contamination. Utility Model Content

[0003] This utility model provides a tunnel sleeper and its track structure to solve the problems of difficult track structure construction and maintenance caused by the complex construction environment, limited height, and poor ventilation in tunnels in the prior art, and to achieve the purpose of reducing track bed pollution inside the tunnel and reducing construction and maintenance difficulties.

[0004] This utility model is achieved through the following technical solution:

[0005] A tunnel sleeper includes a central part and symmetrically distributed side parts at both ends of the central part, wherein the side parts have rail support platforms.

[0006] The maximum height of the pillow edge is higher than the maximum height of the pillow center; the maximum height difference between the pillow edge and the pillow center is 20mm to 50mm.

[0007] The bottom width of the pillow edge is greater than the bottom width of the pillow center; the difference in bottom width between the pillow edge and the pillow center is 20mm to 40mm.

[0008] To address the challenges of track structure construction and maintenance caused by the complex construction environment, height restrictions, and poor ventilation in existing tunnels, this utility model proposes a tunnel sleeper where the sleeper center, sleeper edges, and rail support platform are all existing sleeper structures. This application ensures that the maximum height of the sleeper edges is higher than that of the sleeper center, with a difference of 20mm to 50mm; simultaneously, the bottom width of the sleeper edges is greater than that of the sleeper center, with a difference of 20mm to 40mm. Compared to traditional sleeper structures, this design, with its narrower waist in the sleeper center and increased width of the sleeper edges, helps reduce compressive stress at the sleeper bottom, improves track structure stability, thereby reducing track bed damage and pulverization, and lowering the workload of track bed maintenance. Furthermore, this application effectively reduces the overall height of the sleeper structure, making construction and maintenance easier in complex tunnel environments with limited height.

[0009] Furthermore, the maximum height of the middle part of the pillow is 140mm to 180mm. Correspondingly, the maximum height of the edge part of the pillow in this solution can be between 160mm and 230mm, as long as the difference between the two is between 20mm and 50mm.

[0010] Furthermore, the maximum height of the pillow edge is 180mm to 220mm. Correspondingly, the maximum height of the pillow center in this design can be between 130mm and 200mm, provided that the difference between the two is between 20mm and 50mm.

[0011] Furthermore, the width of the bottom surface of the middle part of the pillow is 300mm to 340mm. Correspondingly, the width of the bottom surface of the pillow edge in this solution can be between 320mm and 380mm, as long as the difference between the two is between 20mm and 40mm.

[0012] Furthermore, the bottom width of the pillow edge is 330mm to 370mm. Correspondingly, the bottom width of the pillow center can be between 290mm and 350mm, provided that the difference between the two is between 20mm and 40mm.

[0013] Furthermore, a pad is provided at the bottom of the middle part and / or the edge part of the sleeper; this is used to further improve the overall elasticity of the track structure, reduce the vibration and pulverization of the track bed, and reduce the amount of track bed maintenance and repair work.

[0014] A track structure for tunnels addresses the problem of track bed contamination caused by poor ventilation and the easy fall of pulverized coal ash into the track structure in existing technologies. This solution also includes a protective cover between adjacent sleepers. By covering the gap between adjacent sleepers with the protective cover, the probability of fly ash falling onto the track bed is reduced, thus mitigating the contamination of the track bed.

[0015] Of course, the size and shape of the cover plate in this solution must match the corresponding sleepers and sleeper spacing.

[0016] Furthermore, the side of the sleeper is provided with a stepped surface, which is used to place the protective cover plate. After the sleeper is installed in place, the two ends of the cover plate are simply placed on the stepped surfaces of the two adjacent sleepers respectively, which can achieve quick installation and arrangement of the cover plate, and also facilitates the removal or replacement of the cover plate later.

[0017] Furthermore, the protective cover includes a center cover that matches the middle of the sleeper and a side cover that matches the edge of the sleeper. Since the sleeper in this application has a narrow waist structure, the cover is configured with both a center cover and a side cover, which facilitates transportation, installation, maintenance, and replacement.

[0018] Furthermore, a lifting device is provided on the surface of the protective cover plate; this facilitates the lifting and disassembly of the protective cover plate without affecting the operation of the large machine.

[0019] Compared with the prior art, this utility model has at least the following advantages and beneficial effects:

[0020] 1. This utility model provides a tunnel sleeper and its track structure, which helps to reduce the compressive stress at the bottom of the sleeper, improve the stability of the track structure, thereby reducing track bed damage and pulverization, and reducing the workload of track bed maintenance.

[0021] 2. This utility model provides a tunnel sleeper and its track structure, which can effectively reduce the overall height of the sleeper structure, thereby making it easier to carry out construction and maintenance in tunnel conditions with complex environments and limited height.

[0022] 3. This utility model provides a tunnel sleeper and its track structure, which improves the overall elasticity of the track structure by using a pad under the sleeper, reducing the vibration and impact of the track bed and pulverization, and reducing the amount of track bed maintenance and repair work.

[0023] 4. This utility model provides a tunnel sleeper and its track structure, which reduces the probability of fly ash falling onto the track bed and mitigates pollution to the track bed by covering the gap between two adjacent sleepers with a protective cover plate.

[0024] 5. This utility model provides a tunnel sleeper and its track structure, which facilitates the lifting and disassembly of the protective cover plate via a lifting device. Attached Figure Description

[0025] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0026] Figure 1This is a schematic elevation view of the sleeper in specific embodiment 1 of this utility model;

[0027] Figure 2 This is a top view of the sleeper in specific embodiment 1 of this utility model;

[0028] Figure 3 This is a schematic diagram of the sleeper end face of a specific embodiment 1 of this utility model;

[0029] Figure 4 This is a schematic elevation view of the sleeper in specific embodiment 2 of this utility model;

[0030] Figure 5 This is a top view of the sleeper in specific embodiment 2 of this utility model;

[0031] Figure 6 This is a schematic diagram of the sleeper end face of a specific embodiment 2 of this utility model;

[0032] Figure 7 This is a top view of the pillow cover plate of specific embodiment 2 of this utility model;

[0033] Figure 8 This is a top view of the pillow cover plate in specific embodiment 2 of this utility model;

[0034] Figure 9 This is a schematic diagram of the track structure of a specific embodiment 2 of this utility model.

[0035] The attached diagram shows the markings and corresponding component names:

[0036] 1-Pillow center, 2-Pillow edge, 3-Pillow underpad, 4-Step surface, 5-Pillow center cover, 6-Pillow edge cover, 7-Lifting device. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model. In the description of this application, it should be understood that terms such as "front," "rear," "left," "right," "up," "down," "vertical," "horizontal," "high," "low," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this application.

[0038] Example 1:

[0039] like Figures 1 to 3The tunnel sleeper shown includes a sleeper center 1 and sleeper edge portions 2 symmetrically distributed at both ends of the sleeper center 1, wherein the sleeper edge portions 2 have rail support platforms;

[0040] The maximum height of the pillow edge portion 2 is higher than the maximum height of the pillow center portion 1; the maximum height difference between the pillow edge portion 2 and the pillow center portion 1 is 20mm to 50mm, preferably 40mm.

[0041] The bottom width of the pillow edge portion 2 is greater than the bottom width of the pillow center portion 1; the difference in bottom width between the pillow edge portion 2 and the pillow center portion 1 is 20mm to 40mm, preferably 30mm.

[0042] A pillow pad 3 is provided at the bottom of the middle part 1 and / or the edge part 2 of the pillow.

[0043] Preferably, the under-sleeper pad 3 can be an integral structure arranged as a whole at the bottom of the sleeper, or it can be a separate structure arranged at the bottom of the middle part 1 and the edge part of the sleeper respectively.

[0044] Preferably, the pillow pad 3 is made of an elastic material, such as a rubber sheet.

[0045] In this embodiment, the sleeper can be a concrete sleeper, and a prestressed steel reinforcement skeleton can be pre-embedded inside.

[0046] Example 2:

[0047] A tunnel track structure, implemented based on the sleepers described in Embodiment 1, such as... Figures 4 to 9 As shown, a protective cover plate is installed between two adjacent sleepers. A stepped surface 4 is provided on the side of each sleeper, and the stepped surface 4 is used to place the protective cover plate. The protective cover plate can be an integral or separate structure.

[0048] When the protective cover is a split structure, it includes a pillow center cover 5 that matches the pillow center 1 and two pillow side cover plates 6 that match the pillow side 2.

[0049] The protective cover plate is equipped with a lifting device 7.

[0050] The protective cover in this embodiment can be made of wood, metal, plastic or precast concrete, etc.

[0051] In this embodiment, the lifting device 7 can be a lifting sleeve, lifting lug, hook, or other structure / facilities that facilitate lifting.

[0052] Example 3:

[0053] A tunnel sleeper or track structure, based on Embodiment 1 or Embodiment 2, wherein in this embodiment:

[0054] The maximum height of the middle part 1 of the pillow is 140mm to 180mm;

[0055] The maximum height of the pillow side 2 is 160mm to 230mm, preferably 180mm to 220mm.

[0056] Example 4:

[0057] A tunnel sleeper or track structure, based on Embodiment 1 or Embodiment 2, wherein in this embodiment:

[0058] The maximum height of the pillow side portion 2 is 180mm to 220mm;

[0059] The maximum height of the middle part 1 of the pillow is 130mm to 200mm, preferably 140mm to 180mm.

[0060] Example 5:

[0061] A tunnel sleeper or track structure, based on Embodiment 1 or Embodiment 2, wherein in this embodiment:

[0062] The bottom width of the middle part 1 of the pillow is 300mm to 340mm;

[0063] The bottom width of the pillow edge 2 is 320mm to 380mm, preferably 330mm to 360mm.

[0064] Example 6:

[0065] A tunnel sleeper or track structure, based on Embodiment 1 or Embodiment 2, wherein in this embodiment:

[0066] The bottom width of the pillow edge 2 is 330mm to 370mm;

[0067] The width of the bottom surface of the middle part 1 of the pillow is 290mm to 350mm, preferably 300mm to 330mm.

[0068] Example 7:

[0069] A tunnel sleeper or track structure, based on Embodiment 1 or Embodiment 2, wherein in this embodiment:

[0070] The maximum height of the middle part 1 of the pillow is 180mm, and the maximum height of the side part 2 of the pillow is 210mm.

[0071] Example 8:

[0072] A tunnel sleeper or track structure, based on Embodiment 1 or Embodiment 2, wherein in this embodiment:

[0073] The bottom width of the middle part 1 of the pillow is 320mm, and the bottom width of the side part 2 of the pillow is 350mm.

[0074] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

[0075] It should be noted that, in this document, terms such as “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Furthermore, the term “connection” as used herein, unless otherwise specified, can mean a direct connection or an indirect connection via other components.

Claims

1. A tunnel sleeper, comprising a central portion (1) and symmetrically distributed side portions (2) at both ends of the central portion (1), wherein the side portions (2) have rail support platforms, characterized in that, The maximum height of the pillow edge (2) is higher than the maximum height of the pillow middle (1); the maximum height difference between the pillow edge (2) and the pillow middle (1) is 20mm to 50mm. The bottom width of the pillow edge (2) is greater than the bottom width of the pillow middle part (1); the difference between the bottom width of the pillow edge (2) and the bottom width of the pillow middle part (1) is 20mm to 40mm.

2. A tunnel sleeper according to claim 1, characterized in that, The maximum height of the middle part (1) of the pillow is 140mm to 180mm.

3. A tunnel sleeper according to claim 1, characterized in that, The maximum height of the pillow side (2) is 180mm to 220mm.

4. A tunnel sleeper according to claim 1, characterized in that, The bottom width of the middle part (1) of the pillow is 300mm to 340mm.

5. A tunnel sleeper according to claim 1, characterized in that, The bottom width of the pillow side (2) is 330mm to 370mm.

6. A tunnel sleeper according to any one of claims 1 to 5, characterized in that, A pillow pad (3) is provided at the bottom of the middle part (1) and / or the side part (2) of the pillow.

7. A track structure based on the tunnel sleepers described in any one of claims 1 to 6, characterized in that, It includes several of the aforementioned tunnel sleepers, with protective covers installed between adjacent tunnel sleepers.

8. The track structure according to claim 7, characterized in that, The side of the sleeper is provided with a stepped surface (4), which is used to place the protective cover plate.

9. The track structure according to claim 7, characterized in that, The protective cover includes a pillow center cover (5) that matches the middle part (1) of the pillow and a pillow side cover (6) that matches the side part (2) of the pillow.

10. The track structure according to claim 7, characterized in that, A lifting device (7) is provided on the surface of the protective cover.

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