Track plate limiting device

Abstract

The utility model relates to the technical field of track traffic and railway construction, in particular to a track plate limiting device which comprises a limiting main body plate, a bottom ballast bed is arranged at the bottom of the limiting main body plate, a track plate is arranged at the upper end of the bottom ballast bed, the limiting main body plate is arranged on two sides of the surface of the track plate, and long bolts are screwed on the surface of the limiting main body plate. A plurality of anchoring protrusions are arranged on the surface of the limiting body plate, fastening screws are arranged on the two sides of the surface of the limiting body plate, side wing plates are rotationally connected to the surfaces of the fastening screws, and plate body longitudinal ribs penetrate through the surfaces of the side wing plates. The rapid connection structure has the beneficial effects that the long bolts penetrate through the limiting devices and the embedded sleeves, rapid connection of the track plate and the bottom ballast bed is achieved, and therefore the track plate can be replaced and maintained conveniently, and angle adjustment can be conducted between the limiting main body plate and the side face wing plates through the fastening screws; therefore, the angle of the wing plate can be flexibly adjusted according to different track line directions and curve radiuses, and the adaptability and stability of the limiting device are improved.

Description

Technical Field

[0001] This utility model relates to the field of rail transit and railway construction technology, specifically a track slab limiting device. Background Technology

[0002] Compared to cast-in-place track slabs, precast track slabs offer higher track laying precision, faster construction speed, and reduced pollution and carbon emissions from the construction site.

[0003] In existing technologies, the limiting of prefabricated track slabs is mainly achieved by connecting the portal steel bars under the slab with the self-compacting concrete layer. To enhance the overall integrity, concrete blocks are then set in the middle or at the ends of the slab for further limiting.

[0004] However, replacing damaged track slabs is very troublesome or even impossible. At the same time, the limiters set at the ends of the precast slabs hinder the longitudinal connection of wet joints at the ends of the precast track slabs in order to improve the overall integrity of the track in high-speed railways. Utility Model Content

[0005] The purpose of this invention is to provide a track slab limiting device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a track slab limiting device, comprising a limiting main plate, a bottom track bed being provided at the bottom of the limiting main plate, a track slab being provided at the upper end of the bottom track bed, the limiting main plate being provided on both sides of the surface of the track slab, long bolts being screwed onto the surface of the limiting main plate, multiple anchoring protrusions being provided on the surface of the limiting main plate, fastening screws being provided on both sides of the surface of the limiting main plate, side wing plates being rotatably connected to the surface of the fastening screws, and longitudinal ribs of the plate penetrating through the surface of the side wing plates.

[0007] Preferably, self-compacting concrete is poured between the surface of the bottom track bed and the track slab, and a pre-embedded sleeve is provided on the surface of the bottom track bed.

[0008] Preferably, the limiting main plate has a geometric polygonal plate structure, and bolt holes are opened on the surface of the limiting main plate. Long bolts are connected to the bolt holes and the pre-embedded sleeves by thread.

[0009] Preferably, the limiting main plate has rotating grooves on both sides of its surface. The rotating grooves are arc-shaped, and fastening screws are fixedly connected to the surface of the rotating grooves. Metal gaskets are fitted on the surface of the fastening screws.

[0010] Preferably, the two ends of the side wing plate are provided with connecting blocks, the surface of the connecting blocks is provided with connecting holes, the fastening screw is rotatably connected to the surface of the connecting hole, the surface of the connecting hole is connected to a nut by a thread, and a metal washer is clamped between the connecting block and the nut.

[0011] Preferably, the surface of the side wing plate is provided with two sets of through holes. The through holes are conical holes, with the diameter of the through holes being slightly larger on the side closer to the limiting main plate and slightly smaller on the side farther from the limiting main plate.

[0012] Preferably, the longitudinal ribs of the plate pass through the surface of the rib-through holes and extend into the track plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. The track slab limiting device proposed in this utility model has anchoring protrusions and bolt holes on the surface of the limiting main plate. By passing a long bolt through the limiting device and the pre-embedded sleeve, the track slab can be quickly connected to the bottom track bed, thereby facilitating the replacement and maintenance of the track slab.

[0015] 2. The angle between the limiting main plate and the side wing plate can be adjusted by fastening screws, thereby flexibly adjusting the wing plate angle according to different track routes and curve radii, improving the adaptability and stability of the limiting device. Attached Figure Description

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

[0017] Figure 2 This is a schematic diagram of the limiting mechanism of this utility model;

[0018] Figure 3 This is a half-sectional schematic diagram of the limiting structure of this utility model;

[0019] Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point A in the middle;

[0020] Figure 5 This is an exploded schematic diagram of the limiting mechanism of this utility model.

[0021] In the diagram: 1. Limiting main plate; 2. Track plate; 3. Self-compacting concrete; 4. Bottom track bed; 5. Long bolt; 6. Longitudinal reinforcement of the plate; 7. Anchoring protrusion; 8. Side wing plate; 9. Embedded sleeve; 10. Bolt hole; 11. Connecting hole; 12. Fastening screw; 13. Nut; 14. Rotating groove; 15. Connecting block; 16. Metal gasket; 17. Through-reinforcement hole. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] Example 1

[0024] Please see Figures 1 to 2 The present invention provides a technical solution: a track slab limiting device, including a limiting main plate 1, a bottom track bed 4 is provided at the bottom of the limiting main plate 1, a track slab 2 is provided at the upper end of the bottom track bed 4, the limiting main plate 1 is provided on both sides of the surface of the track slab 2, and long bolts 5 are screwed onto the surface of the limiting main plate 1.

[0025] The surface of the limiting main plate 1 is provided with multiple anchoring protrusions 7. The number of anchoring protrusions 7 depends on the thickness of the track plate 2. When pre-embedded, the anchoring protrusions 7 protrude from the side of the track plate 2 and can be embedded into the track bed material around the track plate 2. Fastening screws 12 are provided on both sides of the surface of the limiting main plate 1. Side wing plates 8 are rotatably connected to the surface of the fastening screws 12. The longitudinal ribs 6 of the plate body are penetrating the surface of the side wing plates 8.

[0026] Anchoring protrusions 7 and bolt holes 10 are provided on the surface of the limiting main plate 1. Long bolts 5 pass through the limiting device and the pre-embedded sleeve 9 to achieve quick connection between the track slab 2 and the bottom track bed 4, thereby facilitating the replacement and maintenance of the track slab 2. The angle between the limiting main plate 1 and the side wing plate 8 can be adjusted by fastening screws 12, so that the wing plate angle can be flexibly adjusted according to different track line directions and curve radii, thereby improving the adaptability and stability of the limiting device.

[0027] Example 2

[0028] Please see Figures 1 to 4Based on Example 1, in order to achieve rapid replacement and positioning of track slab 2, self-compacting concrete 3 is poured between the bottom track bed 4 and the surface of track slab 2. Self-compacting concrete 3 has strong fluidity and filling properties, and automatically fills various complex gaps between the bottom track bed 4 and the surface of track slab 2 without external vibration. The surface of the bottom track bed 4 is provided with a pre-embedded sleeve 9, which is pre-set at a specific position on the surface of the bottom track bed 4. Its inner diameter matches the outer diameter of the long bolt 5, providing an accurate installation channel for the long bolt 5. During the installation of the track slab 2 positioning device, the construction personnel only need to pass the long bolt 5 through the bolt hole 10 of the positioning main plate 1 and the pre-embedded sleeve 9. The pre-embedded sleeve 9 can reduce the impact of the installation of the long bolt 5 on the structure of the bottom track bed 4, and ensure the accuracy of the verticality and axial position of the long bolt 5.

[0029] The limiting main plate 1 has a geometric polygonal plate structure. The geometric polygonal shape design gives the limiting main plate 1 good mechanical properties in different directions, effectively dispersing the stress generated by the train load. Bolt holes 10 are opened on the surface of the limiting main plate 1. Long bolts 5 are threadedly connected to the bolt holes 10 and the pre-embedded sleeves 9. Rotation grooves 14 are opened on both sides of the surface of the limiting main plate 1. The rotation grooves 14 are arc-shaped grooves. The arc-shaped groove design of the rotation grooves 14 provides space and trajectory for the rotation of the connecting block 15, so that its side wing plate 8 can be flexibly adjusted relative to the limiting main plate 1.

[0030] A fastening screw 12 is fixedly connected to the surface of the rotating groove 14. A metal washer 16 is sleeved on the surface of the fastening screw 12. The metal washer 16 is placed between the connecting block 15 and the nut 13 to buffer, distribute the force evenly and prevent loosening, thereby further improving the reliability and durability of the connection.

[0031] Example 3

[0032] Please see Figures 1 to 5 Based on Embodiment 2, in order to achieve rotation of the angle between the side wing plate 8 and the limiting main plate 1, connecting blocks 15 are provided on both ends of the side wing plate 8. The end of the side wing plate 8 near the limiting main plate 1 is set as an arc surface. Once the connecting block 15 is arc-shaped, it can rotate on the surface of the rotating groove 14. A connecting hole 11 is opened on the surface of the connecting block 15. The fastening screw 12 is rotatably connected to the surface of the connecting hole 11. A nut 13 is threadedly connected to the surface of the connecting hole 11. By tightening the nut 13, the side wing plate 8 can be firmly locked in the required angle position. The metal washer 16 is clamped between the connecting block 15 and the nut 13.

[0033] Two sets of through holes 17 are provided on the surface of the side wing plate 8. The through holes 17 are conical holes. The diameter of the through holes 17 is slightly larger at the end closer to the limiting main plate 1 and slightly smaller at the end further away from the limiting main plate 1. The longitudinal ribs 6 of the plate pass through the surface of the through holes 17 and extend into the track plate 2. The conical design of the through holes 17 with a slightly larger diameter at the end closer to the limiting main plate 1 greatly facilitates the insertion of the longitudinal ribs 6. During the prefabrication or on-site installation of the track plate 2, the longitudinal ribs 6 can automatically center during insertion. The longitudinal ribs 6 can better adjust their position in the hole because the taper can guide the longitudinal ribs 6 to move closer to the side with the smaller diameter, making the contact between the longitudinal ribs 6 and the through holes 17 tighter and more stable.

[0034] In actual use, when installing the track slab 2 limiting device, firstly rotate the side wing plate 8 on the surface of the limiting main plate 1 through the fastening screw 12. Depending on the different positions on the track line, the direction and magnitude of the lateral force on the track slab 2 are different. Adjust the angle between the side wing plate 8 and the limiting main plate 1 so that it is in the best position to adapt to the lateral force generated when the train is running. Then, place the metal shim 16 on the upper end of the connecting block 15, and then fix the relative position between the side wing plate 8 and the limiting main plate 1 through the nut 13.

[0035] The limiting main plate 1 is placed on both sides of the track plate 2. The anchoring protrusion 7 on the limiting main plate 1 contacts and partially embeds into the side of the track plate 2 to achieve initial positioning and connection. At this time, the anchoring protrusion 7 plays a role in enhancing the connection stability between the limiting main plate 1 and the track plate 2. The longitudinal reinforcement 6 of the plate passes through the reinforcement hole 17 of the side wing plate 8 and extends into the track plate 2. The pre-embedded sleeve 9 is pre-embedded in the bottom track bed 4. Then, the self-compacting concrete 3 is poured between the bottom track bed 4 and the surface of the track plate 2 to fill the gap between them.

[0036] Finally, the long bolt 5 is passed through the bolt hole 10 of the limiting main plate 1 and screwed into the pre-embedded sleeve 9 on the surface of the bottom track bed 4. By tightening the long bolt 5, the limiting main plate 1 is tightly placed on the bottom track bed 4. When it is necessary to replace the damaged track slab 2, the connection between the track slab 2 and the bottom track bed 4 can be disconnected simply by unscrewing the long bolt 5, which facilitates the replacement and maintenance of the track slab 2.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A track slab limiting device, comprising a limiting main plate (1), characterized in that: The bottom of the limiting main plate (1) is provided with a bottom track bed (4), and the upper end of the bottom track bed (4) is provided with a track plate (2). The limiting main plate (1) is provided on both sides of the surface of the track plate (2). Long bolts (5) are screwed onto the surface of the limiting main plate (1). Multiple anchoring protrusions (7) are provided on the surface of the limiting main plate (1). Fastening screws (12) are provided on both sides of the surface of the limiting main plate (1). Side wing plates (8) are rotatably connected to the surface of the fastening screws (12). The longitudinal ribs (6) of the plate body penetrate the surface of the side wing plates (8).

2. The track slab limiting device according to claim 1, characterized in that: Self-compacting concrete (3) is poured between the surfaces of the bottom track bed (4) and the track slab (2), and a pre-embedded sleeve (9) is provided on the surface of the bottom track bed (4).

3. The track slab limiting device according to claim 2, characterized in that: The limiting main plate (1) has a geometric polygonal plate structure. Bolt holes (10) are opened on the surface of the limiting main plate (1). Long bolts (5) are connected to the bolt holes (10) and the pre-embedded sleeves (9) by thread.

4. The track slab limiting device according to claim 1, characterized in that: The limiting main plate (1) has rotating grooves (14) on both sides of its surface. The rotating grooves (14) are arc-shaped. A fastening screw (12) is fixedly connected to the surface of the rotating groove (14). A metal gasket (16) is sleeved on the surface of the fastening screw (12).

5. A track slab limiting device according to claim 4, characterized in that: Connecting blocks (15) are provided on both ends of the side wing plate (8). Connecting holes (11) are provided on the surface of the connecting blocks (15). Fastening screws (12) are rotatably connected to the surface of the connecting holes (11). Nuts (13) are threadedly connected to the surface of the connecting holes (11). Metal washers (16) are clamped between the connecting blocks (15) and the nuts (13).

6. The track slab limiting device according to claim 1, characterized in that: The surface of the side wing plate (8) is provided with two sets of through holes (17). The through holes (17) are conical holes. The diameter of the through holes (17) is slightly larger on the side closer to the limiting main plate (1) and slightly smaller on the side farther away from the limiting main plate (1).

7. A track slab limiting device according to claim 6, characterized in that: The longitudinal ribs (6) of the plate pass through the surface of the through-rib holes (17) and extend into the track plate (2).

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