Pressing and limiting device for ballastless track

Abstract

The utility model discloses a pressing and limiting device for a ballastless track. Comprising a top surface steel sheet, side surface steel sheets, a lateral limiting frame which is fixed on a base and is used for limiting adjacent side surface steel sheets in adjacent unit track plates, and a web plate which is positioned in a gap between the adjacent unit track plates, the top plates are fixed to the tops of the web plates and make contact with the adjacent top face steel sheets in the adjacent unit track plates, and the connecting assemblies are arranged between the web plates and the lateral limiting frames. The connecting assembly comprises a first connecting rod hinged to the web plate, a second connecting rod hinged to the lateral limiting frame and a connecting sleeve in threaded connection with the first connecting rod and the second connecting rod, and the thread directions of the first connecting rod and the second connecting rod are opposite. By designing the connecting assembly, the requirement for installation accuracy of parts can be lowered, the installation difficulty is lowered, disassembly is convenient, the device can be repeatedly used, the steel rail fasteners do not need to be loosened in the disassembly process, and the original states of the parts such as the unit track plates do not need to be changed.

Description

Technical Field

[0001] This utility model relates to the field of railway engineering technology, and in particular to a clamping and limiting device for ballastless track. 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 plate type ballastless track temperature force release device (authorization announcement number CN217104507U), which eliminates the risk of instability of the track unit plate due to excessive longitudinal temperature force by limiting the lateral and vertical directions of the track unit plate. In the above technical solution, the web plate and the slot are connected by multiple bolts. This design requires high installation accuracy of the steel beam and the slot, otherwise it is difficult to connect; at the same time, it is not conducive to disassembly because the steel beam is under stress. Summary of the Invention

[0004] This invention provides a clamping and limiting device for ballastless tracks. By designing a connecting component, the web plate and the lateral limiting frame are connected, reducing the installation accuracy requirements. The device is simple to install, easy to disassemble, and can be reused.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a clamping and limiting device for ballastless track, which is set between two adjacent unit track plates. The key features are: a top steel plate fixed to the top surface of the end of the unit track plate, a side steel plate fixed to the side surface of the end of the unit track plate, a lateral limiting frame fixed to the base and used to limit the adjacent side steel plates in the adjacent unit track plates, a web plate located in the gap between the adjacent unit track plates, a top plate fixed to the top of the web plate and in contact with the adjacent top steel plate in the adjacent unit track plate, and a connecting assembly set between the web plate and the lateral limiting frame. The connecting assembly includes a first connecting rod hinged to the web plate, a second connecting rod hinged to the lateral limiting frame, and a connecting sleeve threadedly connected to the first connecting rod and the second connecting rod respectively. The thread directions of the first connecting rod and the second connecting rod are opposite.

[0006] Furthermore, a groove-shaped connecting block is provided at the top of the first connecting rod, and the end of the web is located in the groove of the connecting block and is hinged to the connecting block by means of a first hinge shaft passing through the connecting block and the web.

[0007] Furthermore, a hinge seat is provided on the lateral limiting frame, and a limiting ring is provided at the bottom of the second connecting rod, which is limited in the limiting groove of the hinge seat. The limiting ring is hinged to the hinge seat by means of a second hinge shaft passing through the hinge seat and the limiting ring.

[0008] Furthermore, the diameter of the hinge hole in the limiting ring is larger than the diameter of the hinge portion in the second hinge shaft.

[0009] Furthermore, a locking nut is provided on the first connecting rod or the second connecting rod to cooperate with the connecting sleeve to form an anti-loosening structure.

[0010] Furthermore, anchoring holes are provided in the middle of the unit track plate.

[0011] Furthermore, elastic pads are provided on both sides of the web.

[0012] Furthermore, the lateral limiting frame is provided with a vertical plate for limiting the side steel sheet.

[0013] The beneficial effects of this utility model are: by designing the connecting components, the installation accuracy requirements of the components can be reduced, the installation difficulty can be reduced, the disassembly is convenient, the device can be reused, and the steel rail fasteners do not need to be loosened during the disassembly process, and the original state of the unit track plate and other components does not need to be changed. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the clamping and limiting device for ballastless track according to this utility model;

[0015] Figure 2 yes Figure 1 A schematic diagram of the structure of the connecting component;

[0016] Figure 3 This is a schematic diagram of the structure of the clamping and limiting device for ballastless track of this utility model during implementation.

[0017] In the attached diagram, 1 is the unit track plate, 1-1 is the anchor hole, 2 is the base, 3 is the top steel plate, 4 is the side steel plate, 5 is the lateral limiting frame, 6 is the top plate, 7 is the web plate, 8 is the first connecting rod, 9 is the second connecting rod, 10 is the connecting sleeve, 11 is the hinge seat, 11-1 is the limiting groove, 12 is the connecting block, 12-1 is the groove, 13 is the limiting ring, 14 is the first hinge shaft, 15 is the second hinge shaft, 16 is the locking nut, 17 is the elastic pad, and 18 is the vertical plate. Detailed Implementation

[0018] See appendix Figure 1-3 This utility model provides a clamping and limiting device for ballastless tracks, which is installed between two adjacent unit track plates 1. It includes a top steel plate 3 fixed to the top surface of the end of the unit track plate 1, side steel plates 4 fixed to the side surface of the end of the unit track plate 1, a lateral limiting frame 5 fixed to the base 2 and used to limit the adjacent side steel plates 4 in the adjacent unit track plates 1, a web plate 7 located in the gap between the adjacent unit track plates 1, a top plate 6 fixed to the top of the web plate 7 and in contact with the adjacent top steel plate 3 in the adjacent unit track plate 1, and a connecting assembly disposed between the web plate 7 and the lateral limiting frame 5. The top steel plate 3 is strip-shaped and arranged parallel to the top plate 6. The lateral limiting frame 5 is provided with a vertical plate 18 for limiting the side steel plates 4. The lateral limiting frame 5 and the top plate 6 can restrict the lateral and vertical displacement of the unit track plate 1, but allow the unit track plate 1 to undergo directional expansion and contraction in the longitudinal direction. This prevents the unit track plate 1 from shifting laterally and arching vertically, and releases the longitudinal temperature force generated by temperature changes, reducing the risk of instability due to excessive temperature force. Strip grooves can also be provided on the inner sides of the top plate 6 and the clamping plate 18 to reduce the resistance during directional expansion and contraction of the unit track plate 1. Lubricating oil can also be applied to the grooves to further reduce the resistance during expansion and contraction.

[0019] See appendix Figure 1 and 2The aforementioned connecting components include a first connecting rod 8 hinged to the web 7, a groove-shaped connecting block 12 fixed to the top of the first connecting rod 8, a connecting sleeve 10 threaded to the first connecting rod 8, a second connecting rod 9 threaded to the connecting sleeve 10, a limiting ring 13 fixed to the bottom of the second connecting rod 9, and a hinge seat 11 fixed to the lateral limiting frame 5. The end of the web 7 is located within the groove 12-1 of the connecting block 12 and is hinged to the connecting block 12 by means of a first hinge shaft 14 passing through the connecting block 12 and the web 7. The width of the groove 12-1 in the connecting block 12 is greater than the thickness of the web 7, and the hinge hole in the web 7 that mates with the first hinge shaft 14 is also larger than the diameter of the hinge hole in the connecting hole 12, so as to facilitate the passage of the first hinge shaft 14, reduce the installation accuracy requirements, and facilitate installation and disassembly. The limiting ring 13 is positioned within the limiting groove 11-1 of the hinge seat 11. The width of the limiting groove 11-1 is greater than the width of the limiting ring 13 to reduce the installation accuracy requirements of the lateral limiting frame 5 and the base 2, facilitating the installation of the limiting ring 13. The limiting ring 13 is hinged to the hinge seat 11 via a second hinge shaft 15 passing through the hinge seat 11 and the limiting ring 13. The threads of the first connecting rod 8 and the second connecting rod 9 are opposite in direction, and the connecting sleeve 10 has an internal thread that matches the threads of the two connecting rods. The distance between the two connecting rods can be quickly adjusted by rotating the connecting sleeve 10. By designing the connecting assembly, the installation and disassembly between the web plate 7 and the lateral limiting frame 5 can be easily achieved, reducing the installation accuracy requirements of the components and enabling the device to be reused.

[0020] Furthermore, the diameter of the hinge hole in the limiting ring 13 is larger than the diameter of the hinge portion in the second hinge shaft 15. This design facilitates insertion of the second hinge shaft 15, avoids repeated adjustments to the threaded connection distance between the connecting rod and the connecting sleeve 10, and increases installation convenience. A locking nut 16 is provided on the first connecting rod 8 or the second connecting rod 9 to cooperate with the connecting sleeve 10 to form an anti-loosening structure. In this embodiment, the locking nut 16 is provided on the first connecting rod 8. Holes for installing cotter pins are provided on both the first and second hinge shafts to prevent the hinge shaft from dislodging from the component.

[0021] See appendix Figure 3 An anchoring hole 1-1 is provided in the middle of the unit track plate 1, and the unit track plate 1 can be connected to the base 2 by matching anchoring bolts.

[0022] See appendix Figure 1 Elastic pads 17 are provided on both sides of the web plate 7. The elastic pads 17 can be fixed to the web plate 7 by means of adhesive bonding or other methods, or they can be placed directly on both sides of the web plate 7 during device installation. Alternatively, the elastic pads 17 may not be provided on both sides of the web plate 7.

[0023] When installing the device of this utility model:

[0024] a. Prefabricate the unit track plate 1 and assemble the connecting components. The unit track plate 1 is pre-installed with the top steel plate 3 and the side steel plates 4. When assembling the connecting components, first install the locking nut 16 on the first connecting rod 8 or the second connecting rod 9, and then thread both the first connecting rod 8 and the second connecting rod 9 to the connecting sleeve 10 at the preset thread connection distance.

[0025] b. Place the unit track plate 1 at the preset position on the base 2 and fix it to the base 2 by means of anchor bolts passing through the anchor holes 1-1. There is a gap between adjacent unit track plates 1.

[0026] c. Place the top plate 6 above the top steel sheet 3, with the web plate 7 below the top plate 6 located in the gap between two adjacent unit track plates 1.

[0027] d. The lateral limiting frame 5 is fixed to the base 2 by means of anchoring to achieve the limiting of the unit track plate 1.

[0028] e. The connecting block 12 is hinged to the web plate 7 via the first hinge shaft 14, and the limiting ring 13 is hinged to the hinge seat 11 via the second hinge shaft 15. The connecting sleeve 10 is rotated to make the connecting assembly tightened, thereby making the top plate 6 press against the unit track plate 1. Finally, the locking nut 16 is tightened.

[0029] f. Install rails and fasteners.

[0030] When disassembling, simply loosen the locking nut 16 and rotate the connecting sleeve 10 to remove the cotter pin and quickly remove the hinge shaft, connecting assembly and other parts.

[0031] The embodiments described above are only used to illustrate the technical ideas and features of the present invention. Their purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly. The patent scope of the present invention should not be limited by these embodiments. That is, any equivalent changes or modifications made in accordance with the spirit disclosed in the present invention still fall within the patent scope of the present invention.

Claims

1. A clamping and limiting device for ballastless tracks, disposed between two adjacent unit track plates (1), characterized in that: The system includes a top steel plate (3) fixed to the top surface of the end of the unit track plate (1), a side steel plate (4) fixed to the side surface of the end of the unit track plate (1), a lateral limiting frame (5) fixed to the base (2) and used to limit the adjacent side steel plates (4) in the adjacent unit track plate (1), a web plate (7) located in the gap between the adjacent unit track plates (1), a top plate (6) fixed to the top of the web plate (7) and in contact with the adjacent top steel plate (3) in the adjacent unit track plate (1), and a connecting assembly disposed between the web plate (7) and the lateral limiting frame (5). The connecting assembly includes a first connecting rod (8) hinged to the web plate (7), a second connecting rod (9) hinged to the lateral limiting frame (5), and a connecting sleeve (10) threadedly connected to the first connecting rod (8) and the second connecting rod (9) respectively. The threads of the first connecting rod (8) and the second connecting rod (9) are opposite in direction.

2. The clamping and limiting device for ballastless track according to claim 1, characterized in that: A groove-shaped connecting block (12) is provided at the top of the first connecting rod (8). The end of the web plate (7) is located in the groove of the connecting block (12) and is hinged to the connecting block (12) by means of a first hinge shaft (14) passing through the connecting block (12) and the web plate (7).

3. The clamping and limiting device for ballastless track according to claim 1, characterized in that: A hinge seat (11) is provided on the lateral limiting frame (5), and a limiting ring (13) is provided at the bottom of the second connecting rod (9) in the limiting groove (11-1) of the hinge seat (11). The limiting ring (13) is hinged to the hinge seat (11) by means of a second hinge shaft (15) passing through the hinge seat (11) and the limiting ring (13).

4. The clamping and limiting device for ballastless track according to claim 3, characterized in that: The diameter of the hinge hole in the limiting ring (13) is greater than the diameter of the hinge part in the second hinge shaft (15).

5. The clamping and limiting device for ballastless track according to claim 1, characterized in that: A locking nut (16) is provided on the first connecting rod (8) or the second connecting rod (9) to cooperate with the connecting sleeve (10) to form an anti-loosening structure.

6. The clamping and limiting device for ballastless track according to claim 1, characterized in that: An anchoring hole (1-1) is provided in the middle of the unit track plate (1).

7. The clamping and limiting device for ballastless track according to claim 1, characterized in that: Elastic pads (17) are provided on both sides of the web (7).

8. The clamping and limiting device for ballastless track according to any one of claims 1-7, characterized in that: The lateral limiting frame (5) is provided with a vertical plate (18) for limiting the side steel plate (4).

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