A track slab auxiliary grouting seat

Abstract

This utility model relates to the field of railway track accessory technology, and in particular to an auxiliary grouting seat for track slabs. It includes a supporting skirt and a connecting pipe. A convex ring adapted to a grouting hole is provided at the center of the supporting skirt. The connecting pipe is fixed to the grouting hole via the supporting skirt, and the grouting pipe is connected to the connecting pipe. The thickness of the supporting skirt decreases from the convex ring outwards. A first reinforcing rib is provided at the bottom of the supporting skirt. The first reinforcing rib includes several annular ribs and strip ribs. The annular ribs are concentrically arranged at equal intervals, and the strip ribs are circumferentially distributed with the center of the convex ring as the center. This auxiliary grouting device for track slabs connects the grouting pipe to the grouting seat and vice versa. Disassembly is simple: just pull the convex ring of the grouting seat out of the grouting hole without damaging the grouting port structure, thus reducing the difficulty of disassembly.

Description

Technical Field

[0001] This utility model relates to the field of railway track accessory technology, and in particular to an auxiliary grouting seat for track slabs. Background Technology

[0002] In the construction of slab track, track slab grouting is a crucial process to ensure the stability of the track structure. Traditional grouting techniques typically involve pre-drilling grouting holes in the center of the track slab's top surface, placing a storage hopper directly above the grouting holes, and then injecting self-compacting concrete grout into the gap between the track slab and the foundation layer under gravity. For example, patent CN107190598A discloses a track slab grouting device that uses a support to erect a delivery pipe above the grouting holes, and then injects grout into the holes through a grouting hopper. Although the method is simple to operate, it has significant drawbacks in practical applications: (1) Difficulty in disassembling the hopper: After the slurry is cured, it is easy to form an adhesion with the inner wall of the hopper, making it difficult to separate the hopper from the grouting hole. Forced disassembly may damage the hopper or destroy the grouting port structure, increasing maintenance costs and construction risks; (2) Risk of grouting port contamination: After grouting is completed, the unsealed grouting hole is exposed to the external environment for a long time, which is easy to mix with dust, debris and other pollutants. These impurities may penetrate into the internal structure of the track slab, affecting the curing quality of the slurry, thereby reducing the long-term durability and load-bearing capacity of the track slab. Utility Model Content

[0003] To address the problem of existing grouting hoppers easily sticking to grouting holes and being difficult to remove, this utility model provides an auxiliary grouting seat for track slabs. By setting a grouting seat between the grouting pipe and the grouting hole, the grouting pipe is connected to the grouting seat, and the grouting seat is connected to the grouting hole. The bottom of the grouting seat is provided with a slightly protruding convex ring. During disassembly, it is only necessary to pull the convex ring of the grouting seat out of the grouting hole without damaging the grouting port structure. At the same time, it reduces the difficulty of disassembly, maintenance costs, and construction risks.

[0004] This utility model provides an auxiliary grouting seat for track slabs, including a supporting skirt and a connecting pipe. The bottom of the supporting skirt has a protruding ring that matches the grouting holes on the track slab. The connecting pipe is positioned on the grouting holes via the supporting skirt. The design of the auxiliary grouting seat makes the grouting process more flexible and safer. The supporting skirt stabilizes the grouting seat, fitting tightly to the track slab surface and effectively preventing shaking or displacement during grouting, ensuring accuracy. The protruding ring, matching the grouting holes, ensures good sealing, preventing grout leakage during grouting, and also facilitates disassembly.

[0005] Furthermore, the thickness of the supporting skirt decreases from the convex ring outwards, and a first reinforcing rib is provided at the bottom of the supporting skirt. The first reinforcing rib enhances the overall strength of the supporting skirt, enabling it to withstand greater pressure without easily deforming.

[0006] Furthermore, the first reinforcing rib includes several annular ribs and strip ribs. The annular ribs are arranged concentrically at equal intervals, and the strip ribs are distributed circumferentially with the center of the convex ring as the center. The first reinforcing ribs interweave to form a mesh structure, which can also disperse the impact force from the grout during the grouting process and avoid excessive local stress on the supporting skirt.

[0007] Furthermore, a grouting pipe is connected to the connecting pipe, and a reinforcing pipe is installed at the other end of the grouting pipe. An auxiliary material port extending from the reinforcing pipe is provided on the reinforcing pipe. The reinforcing pipe reinforces the top of the grouting pipe, enhancing the structural strength of the top of the grouting pipe, making it less prone to damage when subjected to greater pressure and frequent operation, and ensuring the durability of the grouting pipe.

[0008] Furthermore, the grouting pipe is composed of left and right halves joined together. The outer diameter of both ends of the half-pipe is smaller than the outer diameter of the middle section, resulting in step one at each end of the half-pipe being adapted to the connecting pipe and step two being adapted to the reinforcing pipe. The joined left and right halves are fixed by the top reinforcing pipe and the bottom connecting pipe. This joint structure makes the installation and disassembly of the grouting pipe more convenient.

[0009] Furthermore, a second reinforcing rib is provided on the outer surface of the grouting pipe. The second reinforcing rib includes several semi-circular ribs and vertical ribs. The semi-circular ribs are evenly spaced along the length of the half-pipe, and the vertical ribs are parallel to the length of the half-pipe and are used to connect the semi-circular ribs. The second reinforcing rib is evenly distributed along the axial direction of the grouting pipe, which can improve the bending resistance of the grouting pipe and prevent the grouting pipe from bending and deforming due to external forces during the grouting process, thereby ensuring the smooth progress of the grouting work.

[0010] Furthermore, a threaded section is provided on the outer periphery of the top of the connecting pipe to fit the sealing cover plate. After grouting is completed, the grouting pipe is removed, and the grouting port is sealed with the sealing cover plate to prevent external debris and moisture from entering the grouting pipe and the track slab, thus avoiding adverse effects on the grouting effect and the track slab structure.

[0011] Furthermore, the inner wall of the sealing cover is provided with internal threads that are compatible with the threaded section, and the sealing cover is threadedly connected to the connecting pipe. The threaded connection between the sealing cover and the threaded section at the top of the connecting pipe not only provides a good sealing effect, but also makes installation and disassembly convenient, facilitating subsequent inspection and maintenance of the grouting process.

[0012] The beneficial effects of this utility model are as follows: This utility model provides an auxiliary grouting seat for track slabs. By setting the grouting seat between the grouting pipe and the grouting hole, the supporting skirt plays a role in stabilizing the grouting seat, ensuring that the supporting skirt fits tightly against the surface of the track slab. This effectively prevents the grouting seat from shaking or shifting during the grouting process, ensuring the accuracy of grouting. The convex ring is adapted to the grouting hole, ensuring good sealing performance, preventing grout leakage during the grouting process, and facilitating disassembly. After grouting is completed, the sealing cover plate is directly screwed onto the connecting pipe of the grouting seat to seal the grouting port, preventing external debris and moisture from entering the grouting pipe and the interior of the track slab, thus avoiding adverse effects on the grouting effect and the structure of the track slab. Attached Figure Description

[0013] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the auxiliary grouting device from the first angle;

[0015] Figure 2 This is a second-angle schematic diagram of the auxiliary grouting device;

[0016] Figure 3 This is an exploded view of the auxiliary grouting device;

[0017] Figure 4 This is a plan view of the auxiliary grouting device;

[0018] Figure 5 yes Figure 4 Schematic diagram of surface AA in the diagram;

[0019] Figure 6 This is an assembly diagram of the sealing cover;

[0020] Figure 7 This is a disassembly diagram of the sealing cover plate; in the diagram: 1. Grouting pipe, 11. Step 1, 12. Step 2, 2. Grouting seat, 21. Support skirt, 22. Connecting pipe, 23. Convex ring, 24. Threaded section, 3. Sealing cover plate, 4. First reinforcing rib, 5. Reinforcing pipe, 51. Auxiliary material port, 6. Second reinforcing rib. Detailed Implementation

[0021] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0022] To facilitate the removal of grouting pipe 1, an auxiliary grouting seat for the track slab is designed, such as... Figure 1-3 As shown, it includes a support skirt 21 and a connecting pipe 22. The bottom of the support skirt 21 is provided with a protruding ring 23 that matches the grouting hole opened on the track plate. The connecting pipe 22 is set on the grouting hole through the support skirt 21.

[0023] The track slab typically has three grouting holes along its length. The central hole is used to install the grouting pipe 1 for grouting, while the holes on both sides are used for venting. The grouting method for the track slab is described in detail in patent publication CN117569122A, and will not be repeated here. The core of this technical solution lies in the addition of a grouting seat 2. In use, the protruding ring 23 at the bottom of the grouting seat 2 is inserted into the grouting hole in the middle of the track slab, ensuring close contact between the outer wall of the protruding ring 23 and the inner wall of the grouting hole. This ensures both sealing and stability of the grouting seat 2. The supporting skirt 21 and connecting pipe 22 of the grouting seat 2 are integrally molded. This integral design enhances the overall strength of the grouting seat 2, reduces gaps that may occur due to splicing, and prevents grout leakage during the grouting process.

[0024] A grouting pipe 1 is connected to the connecting pipe 22 of the grouting base 2. To further ensure the stability of the connection between the grouting pipe 1 and the grouting base 2, a sealing rubber ring 3 is installed at the joint between the grouting pipe 1 and the connecting pipe 22. The sealing rubber ring 3 can not only prevent grout leakage during the grouting process, but also buffer the pressure fluctuations generated during grouting, reducing the risk of damage to the joint due to pressure impact.

[0025] Before grouting begins, the grouting seat 2 and grouting pipe 1 must be inspected. Check that the surface of the convex ring 23 is smooth and free of cracks or protrusions to ensure a tight fit with the inner wall of the grouting hole. Also check that the sealing rubber ring 3 is intact; replace it immediately if damaged. After grouting is complete, to facilitate removal of the grouting pipe 1, first shut down the grouting equipment and stop the grout injection. Gently shake the two halves of the pipe along the axial direction of grouting pipe 1 to loosen the joint. As they gradually loosen, slowly pull them out of the connecting pipe 22. In practical applications, the dimensions and specifications of the grouting seat 2 and grouting pipe 1 can be adjusted according to the grouting requirements of different track slabs. For example, for grouting holes of different diameters, the convex ring 23 of the corresponding size can be replaced.

[0026] like Figure 4 and 5As shown, to ensure the stability of the grouting seat 2, the thickness of the supporting skirt 21 decreases from the convex ring 23 outwards, and a first reinforcing rib 4 is provided at the bottom of the supporting skirt 21. The first reinforcing rib 4 includes several annular ribs and strip ribs. The annular ribs are arranged concentrically at equal intervals, and the strip ribs are distributed circumferentially with the center of the convex ring 23 as the center. The first reinforcing rib 4 enhances the overall strength of the supporting skirt 21, enabling it to withstand greater pressure without easily deforming. The interlaced mesh structure also disperses the impact force from the grout during the grouting process, preventing excessive local stress on the supporting skirt 21 and enabling it to withstand greater pressure without easily deforming.

[0027] A reinforcing pipe 5 is provided at the top of the grouting pipe 1, and an auxiliary material port 51 extending out of the reinforcing pipe 5 is provided on the reinforcing pipe 5. The extended auxiliary material port 51 provides more flexibility to the grouting process, effectively prevents grout overflow, and improves the accuracy and efficiency of grouting.

[0028] Grouting pipe 1 is composed of left and right halves joined together. The outer diameter of both ends of the half-pipe is smaller than that of the middle section, resulting in step 11 at each end of the half-pipe being compatible with connecting pipe 22 and step 12 at the other end being compatible with reinforcing pipe 5. During installation, workers only need to align the left and right halves, using step 11 to mate with connecting pipe 22 and step 12 to mate with reinforcing pipe 5 to quickly complete assembly, greatly improving work efficiency. Moreover, when grouting pipe 1 is damaged or requires replacement, it can be easily disassembled, and the damaged half-pipe can be replaced individually, reducing maintenance costs. The design of Step 11 and Step 22 not only achieves compatibility with Connecting Pipe 22 and Reinforcing Pipe 5, but also plays a role in positioning and sealing. Step 11 fits tightly with Connecting Pipe 22 to prevent grout from leaking from the connection between Grouting Pipe 1 and Connecting Pipe 22, ensuring the sealing of grouting. Step 22 fits with Reinforcing Pipe 5, further enhancing the stability of the top of Grouting Pipe 1. Reinforcing Pipe 5 and Connecting Pipe 22 fix it from the upper and lower ends of the two half-pipes respectively to ensure that the two half-pipes fit tightly together.

[0029] To prevent deformation of the grouting pipe 1, a second reinforcing rib 6 is provided on the outer surface of the grouting pipe 1. The second reinforcing rib 6 includes several semi-circular ribs and vertical ribs. The semi-circular ribs are evenly spaced along the length of the semi-pipe, and the vertical ribs are parallel to the length of the semi-pipe and are used to connect the semi-circular ribs. The second reinforcing rib 6 is evenly distributed along the axial direction of the grouting pipe 1, which can improve the bending resistance of the grouting pipe 1 and prevent the grouting pipe 1 from bending and deforming due to external forces during the grouting process, thereby ensuring the smooth progress of the grouting work.

[0030] like Figure 6 and 7As shown, in order to seal the grouting port, the top periphery of the connecting pipe 22 is provided with a threaded section 24 for fitting with the sealing cover plate 3. After grouting is completed, the grouting pipe 1 is removed, and the sealing cover plate 3 is screwed on to seal the grouting port.

[0031] The inner wall of the sealing cover plate 3 is provided with an internal thread adapted to the threaded section 24, and the sealing cover plate 3 is threadedly connected to the connecting pipe 22. The length of the threaded section 24 is one-third of the height of the connecting pipe 22, which ensures sufficient threaded connection length between the sealing cover plate 3 and the connecting pipe 22 to ensure the connection is firm, without increasing processing costs and installation difficulty due to excessively long threaded section 24. The above description is illustrative only and not restrictive to this utility model. Those skilled in the art will understand that many modifications, variations, or equivalents can be made without departing from the spirit and scope defined by the appended claims, and all such modifications, variations, or equivalents will fall within the protection scope of this utility model.

Claims

1. A track slab auxiliary grouting seat, characterized in that: It includes a support skirt (21) and a connecting pipe (22). The bottom of the support skirt (21) is provided with a convex ring (23) that matches the grouting hole opened on the track plate. The connecting pipe (22) is set on the grouting hole through the support skirt (21).

2. The track slab auxiliary grouting seat according to claim 1, characterized in that: The thickness of the supporting skirt (21) decreases from the convex ring (23) to the outer periphery, and the bottom of the supporting skirt (21) is provided with a first reinforcing rib (4).

3. The track slab auxiliary grouting seat according to claim 2, characterized in that: The first reinforcing rib (4) includes several annular ribs and strip ribs. The several annular ribs are arranged concentrically at equal intervals, and the several strip ribs are distributed circumferentially with the center of the convex ring (23) as the center.

4. The track slab auxiliary grouting seat according to claim 1, characterized in that: A grouting pipe (1) is connected to the connecting pipe (22), and a reinforcing pipe (5) is provided at the other end of the grouting pipe (1). An auxiliary material port (51) extending out of the reinforcing pipe (5) is provided on the reinforcing pipe (5).

5. The track slab auxiliary grouting seat according to claim 4, characterized in that: The grouting pipe (1) is composed of left and right half pipes joined together. The outer diameter of the two ends of the half pipe is smaller than the outer diameter of the middle section of the half pipe, so that the two ends of the half pipe form a step one (11) that is compatible with the connecting pipe (22) and a step two (12) that is compatible with the reinforcing pipe (5).

6. The track slab auxiliary grouting seat according to claim 5, characterized in that: The outer surface of the grouting pipe (1) is provided with a second reinforcing rib (6). The second reinforcing rib (6) includes several semi-circular ribs and vertical ribs. Several semi-circular ribs are arranged at equal intervals along the length direction of the half-pipe, and several vertical ribs are parallel to the length direction of the half-pipe and are used to connect the semi-circular ribs.

7. The track slab auxiliary grouting seat according to claim 1, characterized in that: The connecting pipe (22) has a threaded section (24) on its top periphery for fitting with the sealing cover plate (3).

8. The track slab auxiliary grouting seat according to claim 7, characterized in that: The inner wall of the sealing cover (3) is provided with an internal thread that is compatible with the threaded section (24), and the sealing cover (3) is threadedly connected to the connecting pipe (22).

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