Rack rail track

Abstract

The utility model provides a rack rail which comprises two special-shaped rails arranged in parallel, a rack rail rack arranged between the two special-shaped rails and a plurality of sleepers arranged in the length direction of the rack rail at intervals. Connecting flanges are arranged at the two ends of the rack rail correspondingly, and the sleepers are arranged at the two ends of the rack rail correspondingly. The connecting flange is located between the two special-shaped rails, and the connecting flange is provided with a plurality of mounting through holes used for allowing connecting pieces to penetrate through. According to the rack rail, the connecting flanges are arranged at the two ends of the rack rail, the two adjacent rack rails can be connected through the connecting flanges, and therefore the rack rail is convenient to construct, install, assemble and connect, and stability and safety of connection of the rack rail are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of transport tracks, in particular to a rack track. Background Art

[0002] In the field of coal mining and transportation, the safe and efficient transportation of coal and other minerals is of vital importance. Traditional coal transportation methods often rely on rail transportation systems, among which rail cars running on rack tracks are commonly used as transportation tools. Their strong load capacity and stable operation have made them widely used.

[0003] Existing rack rail installation typically involves placing sleepers on the roadbed and then securing the rails to the sleepers with clamps. The rails are then secured together using clamps. However, in the narrow tunnels of coal mines, existing rack rail installation is difficult, and assembly and connection of the rack rails are complex. Furthermore, due to the difficulty in construction, the stability and safety of the rack rails after assembly are difficult to ensure. Utility Model Content

[0004] In view of this, the present invention aims to provide a rack track that can be easily assembled and connected, and ensures the stability and safety of the rack track connection.

[0005] In order to achieve the above-mentioned purpose, the technical solution of the utility model is achieved as follows:

[0006] A rack track comprises two parallel special-shaped rails, a rack rack provided between the two special-shaped rails, and a plurality of sleepers arranged at intervals along the length direction of the rack track; connecting flanges are respectively provided at both ends of the rack track, and the sleepers are provided at both ends of the rack track; the connecting flange is located between the two special-shaped rails, and the connecting flange is provided with a plurality of mounting through holes for passing connecting parts.

[0007] Furthermore, the special-shaped rail has an I-shaped cross-section and includes a top, a waist and a bottom overlapped on the sleeper, and the top of the special-shaped rail consists of a widened portion and a thickened portion; the widened portion is formed by the transverse extension of the top end of the waist, and the width of the widened portion in the transverse direction is greater than that of the thickened portion; the thickened portion is located on the side close to the rack of the rack rail, and the thickness of the thickened portion in the height direction is greater than that of the widened portion.

[0008] Furthermore, crimping portions are formed at both ends of the connecting flange, the bottom ends of the crimping portions are crimped onto the bottom, and the side surfaces of the crimping portions are connected to the waist.

[0009] Furthermore, the bottom end of the connecting flange is welded to the corresponding sleeper.

[0010] Furthermore, a first reinforcing rib is provided between the connecting flange and the corresponding sleeper.

[0011] Furthermore, a second reinforcing rib is provided between the rack and the sleeper, and a third reinforcing rib is provided between the sleeper and the special-shaped rail; and / or, reinforcing plates are provided on both sides of the rack, the reinforcing plates are provided on the top of the sleeper, and the reinforcing plates are connected between the rack and the special-shaped rail.

[0012] Furthermore, the two sleepers at both ends of the rack track are respectively configured as a first connecting sleeper and a second connecting sleeper; the first connecting sleeper and the sleeper both include a pad, and an N-shaped channel steel arranged on the top of the pad; a support portion extending outward along the length direction of the rack track is formed on the pad of the first connecting sleeper; the second connecting sleeper is composed only of the channel steel, and the second connecting sleeper can be overlapped on the support portion of the first connecting sleeper of another rack track.

[0013] Furthermore, at least a portion of the backing plate is formed with an anchoring portion extending along the length direction of the rack track, and a ground anchor hole is provided on the anchoring portion.

[0014] Furthermore, it also includes an insulating component, which includes an insulating splint and an insulating sleeve; the insulating splint is installed between the two connecting flanges of the two adjacent rack rails, the insulating sleeve can be inserted into the mounting through hole, and the connecting piece for connecting the two adjacent rack rails is passed through the insulating sleeve.

[0015] Furthermore, it also includes a transition assembly, which includes two parallel transition rails, two sleepers arranged at intervals along the extension direction of the transition rails, and one end of the transition assembly is provided with the connecting flange; each transition rail is provided with a pad at the end away from the flange, each pad is arranged on the top of a sleeper, and the top of each pad can overlap the ordinary steel rail.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] The rack track of the utility model provides connecting flanges at both ends of the rack track so that two adjacent rack tracks can be connected through the connecting flanges, thereby facilitating the construction and installation of the rack track, facilitating assembly and connection, and ensuring the stability and safety of the rack track connection.

[0018] In addition, the top of the profiled rail is provided with a widened portion and a thickened portion. The widened portion 1011 is wide enough to constrain the guide wheels and stop wheels of the railcar, preventing the railcar from tipping over to a certain extent and improving the stability of the railcar's travel. Simultaneously, the thickened portion can support the railcar's running wheels, thereby increasing the rack track's load-bearing capacity for the railcar. The connecting flange has crimping portions formed at both ends, constraining the bottom of the profiled rail. The sides of the crimping portions connect to the waist, enhancing the structural strength of the rack track. The bottom end of the connecting flange is welded to the corresponding rail sleeper, ensuring the connection reliability between two adjacent rack tracks.

[0019] In addition, a first reinforcing rib is provided between the connecting flange and the corresponding sleeper, increasing the connection point between the connecting flange and the sleeper and ensuring the connection strength between two adjacent rack rails. A second reinforcing rib is provided between the rack and the sleeper, and a third reinforcing rib is provided between the sleeper and the profiled rail. This prevents the rack and profiled rail from tilting and improves the connection strength between them and the sleeper. Reinforcement plates can be provided on both sides of the rack to directly connect the rack, sleeper, and profiled rail, improving the integrity of the rack.

[0020] Furthermore, the two sleepers at each end of the rack track are configured as a first connecting sleeper and a second connecting sleeper, respectively. When the first connecting sleeper is attached to the support portion of the first connecting sleeper, the connecting flange of the first connecting sleeper can align with the connecting flange of the second connecting sleeper, facilitating the connection between the rack tracks. This also prevents subgrade settlement from causing a height difference between the two rack tracks.

[0021] Finally, some of the pads are formed with anchoring sections, through which ground anchors secure the sleepers to the roadbed, thereby improving the stability of the rack track on the roadbed. The rack track also includes an insulation assembly, which electrically isolates different sections or components of the rack track, ensuring that there is no current interference between adjacent rack tracks. The rack track also includes a transition assembly, which allows the railcar to switch between conventional steel rails and rack tracks, thereby improving the railcar's travel efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0023] Figure 1 This is a schematic diagram of the overall structure of the rack track according to an embodiment of the present utility model;

[0024] Figure 2 This is a schematic structural diagram of a horizontal curved rail in a rack track according to an embodiment of the present utility model;

[0025] Figure 3 This is a schematic structural diagram of a vertical curved rail in a rack track according to an embodiment of the present utility model;

[0026] Figure 4 This is a cross-sectional view of the special-shaped rail according to an embodiment of the present utility model;

[0027] Figure 5 This is a front view of the rack track according to an embodiment of the present utility model;

[0028] Figure 6 This is a cross-sectional view of the connection between two rack rails according to an embodiment of the present invention;

[0029] Figure 7 This is a schematic structural diagram of the transition assembly according to an embodiment of the present utility model;

[0030] Description of reference numerals:

[0031] 1. Special-shaped rails;

[0032] 101, top; 1011, widened portion; 1012, thickened portion; 102, waist; 103, bottom;

[0033] 2. Rack and rack;

[0034] 201, second reinforcing rib; 202, reinforcing plate;

[0035] 3. Sleepers; 3a. First connecting sleeper; 3b. Second connecting sleeper;

[0036] 301, pad; 302, channel steel; 303, support part; 304, anchoring part; 305, ground anchor hole;

[0037] 4. Connecting flange;

[0038] 401, mounting through hole; 402, crimping portion; 403, insulating sleeve; 404, connecting piece;

[0039] 5. The first reinforcement rib;

[0040] 6. The third reinforcement rib;

[0041] 7. Insulation plywood;

[0042] 8. Transition rail;

[0043] 9. Pads;

[0044] 10. Ordinary steel rails. DETAILED DESCRIPTION

[0045] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0046] In the following description, specific details such as specific system structures and techniques are provided for purposes of illustration rather than limitation to facilitate a thorough understanding of the embodiments of the present application. However, it will be apparent to those skilled in the art that the present application may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid obscuring the description of the present application with unnecessary detail.

[0047] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," and "outer" appear to indicate orientation or positional relationships, these are based on the orientation or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, if terms such as "first" and "second" appear, they are used solely for descriptive purposes and should not be construed as indicating or implying relative importance.

[0048] Furthermore, in the description of this utility model, unless otherwise explicitly defined, the terms "mounted," "connected," "connection," and "connector" should be interpreted broadly. For example, they can refer to fixed, removable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0049] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0050] This embodiment relates to a rack track, the overall structure of which is as follows: Figure 1 As shown, it comprises two parallel arranged profile rails 1 , a rack rail 2 and a plurality of sleepers 3 .

[0051] The rack and pinion 2 is positioned between two profiled rails 1. Multiple sleepers 3 are spaced along the length of the rack track and located at the bottom 103 of the profiled rail 1. Connecting flanges 4 are provided at each end of the rack track, and sleepers 3 are located at each end of the rack track. The connecting flange 4 is located between the two profiled rails 1 and has multiple mounting holes 401 for connecting members 404.

[0052] As described above, by arranging connecting flanges 4 at both ends of the rack track, two adjacent rack tracks can be connected through the connecting flanges 4. Compared with the prior art method of placing sleepers 3 on the roadbed and then fixing the track with pressure plate fasteners, the rack track of this embodiment is easy to construct and install, easy to assemble and connect, and ensures the stability and safety of the rack track connection.

[0053] Based on the above overall introduction, specifically, the rack track of this embodiment includes at least a straight rail (such as Figure 1 As shown), horizontal curved rail (as Figure 2 as shown) and vertical curved rails (as Figure 3 (as shown) to accommodate the curved and inclined terrain of underground coal mine tunnels. The two profiled rails 1 of the horizontal curved track are curved in the transverse direction, while the two profiled rails 1 and rack 2 of the vertical curved track are curved in the height direction. In specific implementation, the lengths of the straight rails, horizontal curved rails, and vertical curved rails, as well as the bending angles of the horizontal and vertical curved rails, should be determined based on the actual construction environment of the underground coal mine tunnel.

[0054] Since the rack rail of this embodiment is used to carry the rail car, in order to improve the stability of the rail car, Figure 4 As shown, the special-shaped rail 1 of this embodiment has an I-shaped cross-section and includes a top portion 101, a waist portion 102, and a bottom portion 103 that overlaps the sleeper 3. The top portion 101 of the special-shaped rail 1 is composed of a widened portion 1011 and a thickened portion 1012. The widened portion 1011 is formed by the lateral extension of the top end of the waist portion 102, and the widened portion 1011 is wider in the lateral direction than the thickened portion 1012. The thickened portion 1012 is located on the side closer to the rack 2 and is thicker in the height direction than the widened portion 1011.

[0055] It is understood that the running wheels on the rail car are in direct contact with the top 101 of the profiled rail, and to ensure that the driving wheels of the rail car are always engaged with the rack and pinion 2 and to improve the passability of the rail car, the rail car is generally also provided with guide wheels and limit wheels. The guide wheels and limit wheels are located on the outside of the profiled rail 1 and are in contact with the waist 102 and widened portion 1011 of the profiled rail 1, respectively. Therefore, through the provision of the widened portion 1011, the widened portion 1011 can have sufficient width to constrain the guide wheels and limit wheels, preventing them from dislodging from the profiled rail 1, thereby preventing the rail car from overturning to a certain extent and improving the stability of the rail car. At the same time, the provision of the thickened portion 1012 can support the running wheels of the rail car. The thickened portion 1012 has a large thickness, which can ensure the structural strength of the top 101 of the profiled rail, thereby improving the load-bearing capacity of the rack track for the rail car.

[0056] In order to improve the structural strength of the rack track, such as Figure 5As shown, the connecting flange 4 of this embodiment has crimping portions 402 formed at both ends. The bottom end of the crimping portion 402 is crimped onto the bottom portion 103, and the side of the crimping portion 402 is connected to the waist portion 102. It is understood that the profiled rail 1 tends to tilt toward the outside of the rack track due to the heavy pressure of the railcar. By providing the crimping portion 402 to press against the bottom portion 103 of the profiled rail 1, the bottom portion 103 of the profiled rail 1 is constrained in the height direction. At the same time, the side of the crimping portion 402 is connected to the waist portion 102, allowing the connecting flange 4 to secure the profiled rail 1 through the crimping portion 402, preventing the profiled rail 1 from tilting, thereby improving the structural strength of the rack track. In a specific implementation, the crimping portion 402 of this embodiment is welded to the waist portion 102 of the profiled rail 1. The crimping portion 402 can be welded to the bottom portion 103 of the profiled rail 1 or crimped onto the bottom portion 103 of the profiled rail 1, so as to constrain the bottom portion 103.

[0057] Furthermore, the bottom end of the connecting flange 4 of this embodiment is welded to the corresponding rail sleeper 3, which improves the connection strength of the connecting flange 4 at the end of the rack track and ensures the reliability of the connection between the two adjacent rack tracks. In addition, a first reinforcing rib 5 is provided between the connecting flange 4 and the corresponding rail sleeper 3 of this embodiment, which increases the connection point between the connecting flange 4 and the rail sleeper 3, prevents the middle portion of the connecting flange 4 from bending, and ensures the connection strength between the two adjacent rack tracks.

[0058] In addition, in this embodiment, a second reinforcing rib 201 is provided between the rack 2 and the sleeper 3, and a third reinforcing rib 6 is provided between the sleeper 3 and the special-shaped rail 1. The second reinforcing rib 201 and the third reinforcing rib 6 can prevent the rack 2 and the special-shaped rail 1 from tilting, and improve the connection strength between the two and the sleeper 3.

[0059] At the same time, in this embodiment, reinforcement plates 202 can also be provided on both sides of the rack and rack 2. The reinforcement plates 202 are provided on the top 101 of the sleeper 3 and connected between the rack and rack 2 and the profiled rail 1. The reinforcement plates 202 can directly connect the rack and rack 2, the sleeper 3 and the profiled rail 1 together, thereby improving the integrity of the rack and rack 2.

[0060] As a specific implementation, the two sleepers 3 at each end of the rack track in this embodiment are configured as a first connecting sleeper 3a and a first connecting sleeper 3b, respectively. Both the first connecting sleeper 3a and the sleeper 3 include a base plate 301 and an n-shaped channel steel 302 positioned on the top 101 of the base plate 301. The base plate 301 of the first connecting sleeper 3a is formed with a support portion 303 extending outward along the length of the rack track. The first connecting sleeper 3b consists solely of the channel steel 302 and can overlap the support portion 303 of the first connecting sleeper 3a of another rack track.

[0061] The sleeper 3, composed of a channel steel 302 and a pad 301, has good structural strength, can effectively support the profiled rail 1, and improve the load-bearing capacity of the rack track. Furthermore, when the first connecting sleeper 3b is overlapped on the support portion 303 of the first connecting sleeper 3a, the first connecting sleeper 3b is composed only of the channel steel 302, so that the connecting flange 4 at the first connecting sleeper 3b can be aligned with the connecting flange 4 at the first connecting sleeper 3a, facilitating the connection between the rack tracks. Furthermore, the first connecting sleeper 3b is overlapped on the support portion 303 of the first connecting sleeper 3a, so that the support portion 303 can provide support for the first connecting sleeper 3b. This can, to a certain extent, ensure the smoothness of the joint between the profiled rails 1 between the two rack tracks, preventing roadbed settlement from causing a height difference between the two rack tracks.

[0062] In specific implementation, the first connecting rail sleepers 3a and 3b can be respectively provided at both ends of the straight rail, horizontal curved rail and vertical curved rail of the rack track of this embodiment. The above-mentioned pads 301 can be configured as a split structure and provided at both ends of the channel steel 302 in the longitudinal direction.

[0063] To enhance the stability of the rack track installation on the roadbed, at least some of the backing plates 301 in this embodiment are formed with anchoring portions 304 extending along the length of the rack track, and ground anchor holes 305 are provided in the anchoring portions 304. Through the provision of the anchoring portions 304 and the ground anchor holes 305 therein, the ground anchors can secure the sleepers 3 to the roadbed via the anchoring portions 304, thereby enhancing the stability of the rack track on the roadbed. In practice, considering the production cost of the cogging track, only some of the backing plates 301 need to be provided with anchoring portions 304 to ensure the stability of the rack track installation on the roadbed.

[0064] In addition, if Figure 6 As shown, the rack track of this embodiment also includes an insulating component, which includes an insulating splint 7 and an insulating sleeve 403. The insulating splint 7 is installed between the two connecting flanges 4 of two adjacent rack tracks. The insulating sleeve 403 can be inserted into the mounting through-hole 401, and the connector 404 for connecting the two adjacent rack tracks is inserted into the insulating sleeve 403. By setting up the insulating component, different sections or components of the rack track are electrically isolated, which can ensure that there is no current interference between adjacent rack tracks. At the same time, the setting of the insulating sleeve 403 can block the connector 404 from the connecting flange 4, preventing the connector 404 from conducting between the two connecting flanges 4, thereby ensuring the insulation performance between adjacent rack tracks. In specific implementation, the connector 404 of this embodiment can be made of bolts and nuts, and the insulating sleeve 403 can prevent the bolts and nuts from contacting the connecting flange 4. In addition, the insulating splint 7 and the insulating sleeve 403 of this embodiment can be made of insulating materials well known to those skilled in the art, such as epoxy resin, nylon, etc.

[0065] Finally, if Figure 7 As shown, the rack track of this embodiment also includes a transition assembly, which includes two parallel transition rails 8, two sleepers 3 spaced apart along the extension direction of the transition rails 8, and a connecting flange 4 at one end of the transition assembly. Each transition rail 8 is provided with a pad 9 at the end away from the flange, and each pad 9 is provided on the top 101 of a sleeper 3, and the top 101 of each pad 9 can overlap the ordinary rail 10. Through the provision of the transition assembly, the rack track can be connected to the ordinary rail 10, so that the rail car can switch between the ordinary rail 10 and the rack track. It can be understood that the rail car travels in the coal mine tunnel via the rack track. When it exits the tunnel, it can travel to other places via the ordinary rail 10 without changing the train or the frame, thereby improving the travel efficiency of the rail car.

[0066] Specifically, the transition rail 8 of this embodiment is based on the special-shaped rail 1. At the end near the ordinary rail 10, the width of the widened portion 1011 of the transition rail 8 gradually decreases, so that the width of the top 101 of the transition rail 8 is the same as the top 101 of the ordinary rail 10, achieving a transition effect. Furthermore, due to the different heights of the ordinary rail 10 and the transition rail 8, the spacer 9 ensures that the top 101 of the ordinary rail 10 is flush with the top 101 of the transition rail 8.

[0067] In a specific implementation, the ordinary rail 10 and the transition rail 8 can be connected through a rail clamp (fish plate), and the sleeper 3 close to the connecting flange 4 is the first connecting sleeper 3b.

[0068] In summary, the rack track of this embodiment provides connecting flanges 4 at both ends of the rack track so that two adjacent rack tracks can be connected through the connecting flanges 4, thereby facilitating the construction and installation of the rack track, facilitating assembly and connection, and ensuring the stability and safety of the rack track connection.

[0069] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A rack track, characterized in that: It comprises two parallel arranged special-shaped rails (1), a rack and toothed rack (2) arranged between the two special-shaped rails (1), and a plurality of sleepers (3) arranged at intervals along the length direction of the rack and toothed rails; Connecting flanges (4) are respectively provided at both ends of the rack track, and sleepers (3) are provided at both ends of the rack track; The connecting flange (4) is located between the two special-shaped rails (1), and the connecting flange (4) is provided with a plurality of mounting through holes (401) for passing connecting pieces (404).

2. The rack track according to claim 1, characterized in that: The special-shaped rail (1) has an I-shaped cross-section and comprises a top (101), a waist (102) and a bottom (103) overlapped on the rail sleeper (3), and the top (101) of the special-shaped rail (1) consists of a widened portion (1011) and a thickened portion (1012); The widened portion (1011) is formed by extending laterally from the top end of the waist portion (102), and the width of the widened portion (1011) in the transverse direction is greater than that of the thickened portion (1012); The thickened portion (1012) is located on a side close to the rack rail (2), and the thickness of the thickened portion (1012) in the height direction is greater than that of the widened portion (1011).

3. The rack track according to claim 2, characterized in that: Both ends of the connecting flange (4) are formed with a crimping portion (402), the bottom end of the crimping portion (402) is crimped onto the bottom (103), and the side surface of the crimping portion (402) is connected to the waist (102).

4. The rack track according to claim 1, characterized in that: The bottom end of the connecting flange (4) is welded to the corresponding rail sleeper (3).

5. The rack track according to claim 1, characterized in that: A first reinforcing rib (5) is provided between the connecting flange (4) and the corresponding rail sleeper (3).

6. The rack track according to claim 1, characterized in that: A second reinforcing rib (201) is provided between the rack rail (2) and the sleeper (3), and a third reinforcing rib (6) is provided between the sleeper (3) and the special-shaped rail (1); And / or, reinforcement plates (202) are provided on both sides of the rack and rack (2), the reinforcement plates (202) are provided on the top (101) of the sleeper (3), and the reinforcement plates (202) are connected between the rack and rack (2) and the special-shaped rail (1).

7. The rack track according to claim 1, characterized in that: The two sleepers (3) at both ends of the rack track are respectively configured as a first connecting sleeper (3a) and a second connecting sleeper (3b); The first connecting rail sleeper (3a) and the rail sleeper (3) both comprise a pad (301) and an n-shaped channel steel (302) provided on the top (101) of the pad (301); A support portion (303) extending outwardly along the length direction of the rack track is formed on the pad (301) of the first connecting rail sleeper (3a); The second connecting rail sleeper (3b) is composed only of the channel steel (302), and the second connecting rail sleeper (3b) can be overlapped on the supporting portion (303) of the first connecting rail sleeper (3a) of another rack track.

8. The rack track according to claim 7, characterized in that: At least a portion of the pad (301) is formed with an anchoring portion (304) extending along the length direction of the rack track, and a ground anchor hole (305) is provided on the anchoring portion (304).

9. The rack track according to any one of claims 1 to 8, characterized in that: It also includes an insulating assembly, which includes an insulating clamping plate (7) and an insulating sleeve (403); The insulating clamping plate (7) is mounted between two connecting flanges (4) of two adjacent rack rails. The insulating sleeve (403) can be inserted into the mounting through hole (401), and a connecting piece (404) for connecting two adjacent rack rails is inserted into the insulating sleeve (403).

10. The rack track according to any one of claims 1 to 8, characterized in that: It also includes a transition assembly, the transition assembly including two parallel transition rails (8), two sleepers (3) spaced apart along the extension direction of the transition rails (8), and one end of the transition assembly is provided with the connecting flange (4); A pad (9) is provided at one end of each transition rail (8) away from the flange. Each pad (9) is arranged on the top (101) of a sleeper (3), and the top (101) of each pad (9) can overlap the ordinary rail (10).

Images