Plate type track structure

Abstract

The utility model discloses a plate type track structure which comprises a base plate, unit track plates located on the base plate, a track bearing table arranged on the unit track plates and a steel rail installed on the track bearing table, and is characterized in that a pressing and limiting assembly for limiting the adjacent unit track plates is arranged on the base plate; the pressing and limiting assembly comprises a portal frame, two connecting bases fixed to the two ends of the portal frame correspondingly, a vertical limiting plate limited to the portal frame, and a top face pressing and limiting bolt which is in threaded connection with the portal frame and presses the vertical limiting plate to the top faces of the ends of the two adjacent unit track plates. The side surface limiting plate is horizontally limited on the portal frame in a sliding manner; and the side surface pressing limiting bolt is in threaded connection with the portal frame and presses the side surface limiting plate on the side surfaces of the end parts of the two adjacent unit track plates. The limiting position of the limiting plate can be adjusted through the corresponding pressing limiting bolts, and the manufacturing error of the unit track plate and the installation error between the unit track plate and the base plate cannot affect the limiting effect.

Description

Technical Field

[0001] This utility model relates to the field of railway engineering technology, and in particular to a slab track structure. Background Technology

[0002] Currently, slab track has advantages such as high laying accuracy and good track smoothness, and is widely used in high-speed railways. Based on the longitudinal connection type, slab track is divided into two categories: longitudinal unit type and longitudinal continuous (longitudinal connected) type. Longitudinal connected slab track has good overall integrity, but because its longitudinal displacement is constrained, when there is a large difference between the actual temperature and the locking temperature of the slab track, huge longitudinal thermal forces will be generated within the slab track. This can cause significant temperature deformation in weak points of the track structure, such as wide-narrow joints, leading to defects such as slab end arching. Under extreme high-temperature conditions in summer, slab track may even experience vertical instability, seriously endangering train operation safety.

[0003] The inventors previously applied for a longitudinally connected slab type ballastless track temperature force release device (authorization announcement number CN217104507U), which eliminates the risk of instability of the track unit plates due to excessive longitudinal temperature force by limiting the lateral and vertical directions of the track unit plates. In the above technical solution, the steel beam is fixed to the lateral limiting frame by bolts to achieve vertical limiting, and the lateral limiting frame achieves longitudinal limiting. Due to errors in the manufacturing and installation of the track unit plates, the steel beam cannot uniformly limit the track unit plates, and the lateral limiting frame cannot be installed. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a plate track structure that achieves stable positioning of the unit track plate by designing the vertical limiting plate and the side limiting plate as adjustable.

[0005] This utility model is achieved through the following technical solution: To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a plate track structure, including a base plate, a unit track plate located on the base plate, a rail support platform set on the unit track plate, and a rail installed on the rail support platform. The key is that: a clamping and limiting assembly for limiting adjacent unit track plates is provided on the base plate. The clamping and limiting assembly includes a gantry frame, two connecting seats respectively fixed at both ends of the gantry frame and connected to the base plate, a vertical limiting plate that slides vertically on the gantry frame, a top surface clamping and limiting bolt that is threaded to the gantry frame and presses the vertical limiting plate against the top surface of the ends of two adjacent unit track plates, a side limiting plate that slides horizontally on the gantry frame, and a side clamping and limiting bolt that is threaded to the gantry frame and presses the side limiting plate against the side surface of the ends of two adjacent unit track plates.

[0006] Furthermore, the gantry frame includes a top plate located in the limiting groove of the unit track plate and two side plates respectively fixed on both sides of the top plate, and the connecting seat is connected to the side plates.

[0007] Furthermore, a reinforcing rib is provided between the connecting seat and the side plate.

[0008] Furthermore, a vertically arranged elongated groove is provided on the side plate, and the vertical limiting plate is vertically slidably limited on the gantry frame by means of a sliding connecting bolt that passes through the elongated groove and is threadedly connected to the vertical limiting plate.

[0009] Furthermore, the top surface clamping and limiting bolts are threadedly connected to the top plate and are provided in multiple forms along the length of the top plate.

[0010] Furthermore, the side clamping limit bolts are threadedly connected to the side plate and multiple bolts are provided on the end side of each unit track plate.

[0011] Furthermore, a screw is provided on the side limiting plate, the screw passing through the side plate and connected to the connecting nut.

[0012] Furthermore, a web plate is provided at the bottom of the vertical limiting plate, located in the gap between adjacent unit track plates, and elastic pads are provided on both sides of the web plate.

[0013] Furthermore, the unit track plate is provided with a top steel sheet that contacts the vertical limiting plate.

[0014] Furthermore, the unit track plate is provided with side steel plates that contact the side limiting plate.

[0015] The beneficial effects of this utility model are: 1. The limiting position of the limiting plate can be adjusted by the corresponding clamping limiting bolts, and the manufacturing error of the unit track plate and the installation error between it and the base plate will not affect the limiting effect; 2. The clamping limiting component adopts a modular design, which can realize factory prefabrication and assembly, and quick on-site installation, thus improving installation efficiency; 3. The limiting component is easy to install and disassemble and can be reused. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the plate track structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the clamping and limiting component in the plate track structure of this utility model;

[0018] Figure 3 This is a schematic diagram showing the connection between the web plate and the vertical limiting plate in the plate track structure of this utility model.

[0019] In the attached diagram, 1. Base plate, 2. Unit track plate, 2-1. Limiting groove, 3. Rail support platform, 4. Gantry frame, 41. Top plate, 42. Side plate, 42-1. Long groove, 5. Connecting seat, 6. Vertical limiting plate, 7. Sliding connecting bolt, 8. Top surface clamping limiting bolt, 9. Side limiting plate, 10. Side clamping limiting bolt, 11. Reinforcing rib plate, 12. Screw, 13. Connecting nut, 14. Web plate, 15. Elastic pad, 16. Top surface steel plate, 17. Side steel plate, 18. Locking nut. Detailed Implementation

[0020] See appendix Figure 1-3 This utility model provides a plate track structure, including a base plate 1, unit track plates 2 located on the base plate 1, a rail support platform 3 set on the unit track plates 2, and steel rails installed on the rail support platform 3. The key feature is that the base plate 1 is provided with a clamping and limiting assembly to limit the movement of adjacent unit track plates 2, so as to achieve synchronous vertical and lateral limiting of the ends of two adjacent unit track plates 2. The clamping and limiting assembly includes a gantry frame 4, two connecting seats 5 respectively fixed at both ends of the gantry frame 4 and connected to the base plate 1, a vertical limiting plate 6 that slides vertically on the gantry frame 4, a top surface clamping and limiting bolt 8 that is threaded to the gantry frame 4 and presses the vertical limiting plate 6 against the top surface of the ends of the two adjacent unit track plates 2, a side limiting plate 9 that slides horizontally on the gantry frame 4, and a side clamping and limiting bolt 10 that is threaded to the gantry frame 4 and presses the side limiting plate 9 against the side surface of the ends of the two adjacent unit track plates 2. The combined action of the vertical limiting plate 6 and the two side limiting plates 9 can restrict the vertical and lateral displacement of the end of the unit track plate 2, but allow it to expand and contract longitudinally to prevent the unit track plate 2 from shifting laterally and arching vertically, and release the longitudinal temperature force generated by the temperature change of the unit track plate 2, reducing the risk of the unit track plate 2 becoming unstable due to excessive temperature force.

[0021] See appendix Figure 2 The aforementioned gantry 4 includes a top plate 41 located within the limiting groove 2-1 of the unit track plate 2 and two side plates 42 respectively fixed on both sides of the top plate 41. A connecting seat 5 is connected to the side plates 42. By providing the limiting groove 2-1 at the end of the unit track plate 2, the top plate 41 can be positioned within the groove, thus reducing the overall height of the gantry 4 and preventing interference with the installation of other components such as rails. A certain distance exists between the top plate 41 and the side wall of the limiting groove 2-1 to allow for directional expansion and contraction of the unit track plate 2. The length of the top plate 41 is greater than the width of the unit track plate 2, ensuring a certain distance between the side limiting plate 9 and the side of the unit track plate 2. This design facilitates both the installation of the gantry 4 and the adjustment of the distance between the side limiting plate 9 and the side plates 42.

[0022] To ensure the connection strength between the connecting seat 5 and the side plate 42, a reinforcing rib plate 11 is provided between the connecting seat 5 and the side plate 42.

[0023] Each side plate 42 is provided with a vertically arranged elongated groove 42-1. The vertical limiting plate 6 is vertically slidably limited on the gantry frame 4 by means of a sliding connecting bolt 7 that passes through the elongated groove 42-1 and is threadedly connected to the vertical limiting plate 6. There are two elongated grooves 42-1 arranged side by side on the side plate 42. There is a certain gap between the tightening part of the sliding connecting bolt 7 and the side plate 42, which facilitates the sliding limitation of the vertical limiting plate 6 on the elongated groove 42-1. Even if the pressing surface of the unit track plate 2 has a certain angle, the vertical limiting plate 6 can still be in contact with the pressing surface and pressed against the unit track plate 2 by the top pressing limiting bolt 8.

[0024] The top surface clamping limit bolts 8 are threadedly connected to the top plate 41 and are arranged in multiple ways along the length of the top plate 41. Preferably, multiple limit bolts are provided above the end of each unit track plate 2. In this embodiment, five limit bolts are provided on the top surface of each unit track plate 2 to ensure the strength and stability of the clamping.

[0025] Side clamping limit bolts 10 are threadedly connected to side plates 42, and multiple bolts are provided on the end side of each unit track plate 2. In this embodiment, two limit bolts are provided on the side of each unit track plate 2.

[0026] In addition, locking nuts 18 are provided for both the top surface clamping limit bolt 8 and the side clamping limit bolt 10 to prevent the limit bolts from loosening.

[0027] A screw 12 is provided on the side limiting plate 9. The screw 12 passes through the side plate 42 and is connected to the connecting nut 13. The diameter of the through hole on the side plate 42 that matches the screw 12 is larger than the diameter of the screw 12, so that the side limiting plate 9 can rotate within a certain range to better fit the side of the unit track plate 2.

[0028] See appendix Figure 3 A web plate 14 is provided at the bottom of the vertical limiting plate 6, located in the gap between adjacent unit track plates 2. Elastic pads 15 are provided on both sides of the web plate 14. The elastic pads 15 can be connected to the web plate 14 by means of adhesive bonding or other methods.

[0029] A top steel plate 16 is provided on the unit track plate 2, which contacts the vertical limiting plate 6. A side steel plate 17 is provided on the unit track plate 2, which contacts the side limiting plate 9. The steel plates facilitate relative sliding between the unit track plate 2 and the vertical limiting plate 6 and the side limiting plate 9.

[0030] During installation, the plate track structure of this utility model is as follows:

[0031] Step a: Place the unit track plate 2 at a preset position on the base plate 1 and fix it to the base plate 1 using anchor bolts passing through the anchor holes in the middle of the unit track plate 2. There is a gap between adjacent unit track plates 2 to facilitate the installation of the clamping and limiting components.

[0032] Step b: Install the clamping and limiting assembly. The limiting assembly can be prefabricated in the factory and assembled into a modular component for quick on-site installation. During installation: 1. Place the connecting seat 5 in the preset connection position, ensuring the web plate 14 is positioned between two adjacent unit track plates 2. Then, fix the connecting seat 5 to the base plate 1 using anchor bolts. 2. Loosen the connecting nut 13 so that the side limiting plate 9 can fit against the side of the unit track plate 2. By adjusting the threaded connection distance of the top clamping and limiting bolt 8 and the side clamping and limiting bolt 10 respectively, the vertical limiting plate 6 clamps the top of the two unit track plates 2, and the two side plates 42 respectively clamp the sides of the two unit track plates 2, thus forming vertical and lateral limiting. 3. Tighten the matching locking nut 18 to prevent the corresponding limiting bolts from loosening.

[0033] Step c: Install the rails and fasteners.

[0034] Finally, it is necessary to note that the above content is only used to help understand the technical solution of the present invention and should not be construed as a limitation on the scope of protection of the present invention; any non-essential improvements and adjustments made by those skilled in the art based on the above content of the present invention are all within the scope of protection claimed by the present invention.

Claims

1. A slab track structure comprising a base slab (1), a unit track slab (2) located on the base slab (1), a rail bearing platform (3) provided on the unit track slab (2), and a steel rail installed on the rail bearing platform (3), characterized in that: The base plate (1) is provided with a pressing limiting assembly for limiting the adjacent unit track plates (2), the pressing limiting assembly comprises a portal frame (4), two connecting seats (5) fixed at the two ends of the portal frame (4) and connected with the base plate (1), a vertical limiting plate (6) vertically slidingly limited on the portal frame (4), a top surface pressing limiting bolt (8) threadedly connected with the portal frame (4) and pressing the vertical limiting plate (6) on the top surface of the end of the two adjacent unit track plates (2), a side limiting plate (9) horizontally slidingly limited on the portal frame (4), and a side pressing limiting bolt (10) threadedly connected with the portal frame (4) and pressing the side limiting plate (9) on the side of the end of the two adjacent unit track plates (2).

2. Slab track structure according to claim 1, characterized in that The portal frame (4) comprises a top plate (41) located in the limiting groove (2-1) of the unit track plate (2) and two side plates (42) fixed at the two sides of the top plate (41), and the connecting seat (5) is connected with the side plate (42).

3. Slab track structure according to claim 2, characterized in that A reinforcing rib plate (11) is arranged between the connecting seat (5) and the side plate (42).

4. Slab track structure according to claim 2, characterized in that: A vertical long groove (42-1) is arranged on the side plate (42), and the vertical limiting plate (6) is vertically slidingly limited on the portal frame (4) by means of a sliding connection bolt (7) penetrating through the long groove (42-1) and threadedly connected with the vertical limiting plate (6).

5. Slab track structure according to claim 4, characterized in that: The top surface pressing limiting bolt (8) is threadedly connected with the top plate (41) and arranged in the length direction of the top plate (41).

6. Slab track structure according to claim 2, characterized in that: The side pressing limiting bolt (10) is threadedly connected with the side plate (42) and arranged on the side of the end of each unit track plate (2).

7. Slab track structure according to claim 2, characterized in that A screw rod (12) is arranged on the side limiting plate (9), the screw rod (12) penetrates through the side plate (42) and is connected with a connecting nut (13).

8. Slab track structure according to any one of claims 1-7, characterized in that: An abdominal plate (14) is arranged at the bottom of the vertical limiting plate (6) and located in the gap between the adjacent unit track plates (2), and elastic pads (15) are arranged on the two sides of the abdominal plate (14).

9. Slab track structure according to any one of claims 1-7, characterized in that: A top surface steel sheet (16) is arranged on the unit track plate (2) and in contact with the vertical limiting plate (6).

10. Slab track structure according to any one of claims 1-7, characterized in that: A side surface steel sheet (17) is arranged on the unit track plate (2) and in contact with the side limiting plate (9).

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