Railway roadbed treatment grouting tooling

By installing parallel steel pipe outlets and parallel grout stoppers at the ends of the grouting pipes, the problems of low construction efficiency and bursting of grouting pipes in railway subgrade renovation were solved, achieving efficient and safe construction results.

CN224468152UActive Publication Date: 2026-07-07CHINA RAILWAY 16TH BUREAU GRP RAIL TRANSPORT ENG CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHINA RAILWAY 16TH BUREAU GRP RAIL TRANSPORT ENG CO LTD
Filing Date
2025-07-30
Publication Date
2026-07-07

AI Technical Summary

Technical Problem

In existing technologies, the grouting pipes are far from the construction site during railway subgrade renovation, resulting in low construction efficiency and a high risk of bursting. Furthermore, the small outlet of the grout plug leads to increased pressure.

Method used

Design a tooling device for grouting in railway subgrade treatment. It adopts a parallel grouting method by setting a steel pipe at the end of the grouting pipe and connecting three discharge ports in parallel. Each discharge port is connected to an independent valve and a grout stop plug. Stable connection between components is achieved by using connecting pipe heads and auxiliary fixing components, thereby improving construction efficiency and safety.

Benefits of technology

It improved construction efficiency, avoided bursting caused by increased pressure in the grouting delivery pipe, enhanced the practicality and safety of construction, and simplified the component installation process.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224468152U_ABST
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Abstract

The utility model discloses a kind of railway roadbed remediation grouting's tooling equipment, including grouting pipe, the one end of grouting pipe is fixed with steel pipe, the one end of steel pipe outer wall is fixed with grouting total valve, the outer wall one side of steel pipe is connected and is provided with three discharge ports, the outer wall of three discharge ports is fixed with independent valve, the one end of three discharge ports is fixed with connecting pipe head, and is connected with stop grouting plug pipe by connecting pipe head connection.This utility model is provided with steel pipe by setting steel pipe at grouting pipe end head, and three discharge ports on steel pipe are connected with three stop grouting plugs by connecting pipe head connection, this kind of parallel grouting mode not only can improve construction efficiency, also avoid causing grouting delivery pipe pressure increase and occur burst condition, simultaneously, each steel pipe discharge port is provided with independent valve, so stop grouting plug alone can be realized arbitrary operation, improve practicality, secondly, the installation efficiency can be improved by connecting pipe head connection mode between parts.
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Description

Technical Field

[0001] This utility model relates to the field of railway subgrade improvement technology, specifically to a tooling and equipment for railway subgrade improvement grouting. Background Technology

[0002] Railway subgrade remediation refers to a systematic operation that uses engineering techniques to repair, reinforce, and prevent various diseases or structural defects in railway subgrades, in order to restore the subgrade's bearing capacity, stability, and track surface smoothness, and ensure the safe operation of trains. During railway subgrade remediation, specific grout is injected into the subgrade structure to achieve the purpose of filling cracks, reinforcing the soil, or repairing settlement.

[0003] In real life, due to the special nature of the railway environment, the distance between the grouting mixing plant and the grouting pump and the construction site is usually far. Large-diameter grouting delivery pipes are often used to transport the grouting liquid to the construction site. Since each grouting pipe is usually connected to a grout stop plug and the outlet of the grout stop plug is small, this not only reduces the construction efficiency, but also easily causes the grouting delivery pipe to burst due to increased pressure. Utility Model Content

[0004] The purpose of this utility model is to provide a tooling and equipment for grouting in railway subgrade improvement, so as to solve the problems mentioned in the background art. To solve the above technical problems, this utility model is achieved through the following technical solution:

[0005] This utility model relates to a tooling and equipment for grouting in railway subgrade treatment, comprising:

[0006] The grouting pipe has a steel pipe fixed at one end, a grouting main valve fixed at one end of the outer wall of the steel pipe, three discharge ports connected to one side of the outer wall of the steel pipe, an independent valve fixed at the outer wall of each of the three discharge ports, a connecting pipe head fixed at one end of each of the three discharge ports, and a grout stop plug pipe connected through the connecting pipe head, with a grout stop plug head fixed at one end of the grout stop plug pipe.

[0007] The connecting pipe head includes a first sleeve and a second sleeve. One end of the first sleeve has two slots, and one end of the inner wall of the first sleeve has two mounting grooves. The other end of the inner wall of the first sleeve is connected to a sealing tube. The outer wall of the sealing tube is slidably provided with a sealing seat. Four springs are fixedly provided on one side of the sealing seat. Both sides of the outer wall of the second sleeve are fixedly provided with fixing seats.

[0008] Furthermore, a pressure gauge is fixedly installed at the top of the outer wall of the grouting pipe.

[0009] Furthermore, a sealing groove is provided on the other side of the sealing seat, and two sliders are fixedly provided on the outer wall of the sealing seat. The outer walls of the two sliders are slidably connected to the upper and lower ends of the inner wall of the first sleeve, respectively.

[0010] Furthermore, a sealing ring is fixedly provided at one end of the second sleeve, and the size of the sealing ring is adapted to the sealing groove.

[0011] Furthermore, the two slots and the two mounting slots are arranged in a cross shape facing each other.

[0012] Furthermore, it also includes auxiliary fixing components, which include two T-shaped shafts. The outer walls of the two T-shaped shafts are slidably provided with connecting blocks, and the opposite sides of the two connecting blocks are engaged with elastic blocks. The opposite ends of the two elastic blocks are respectively fixedly disposed on both sides of the outer wall of the first sleeve.

[0013] Furthermore, each of the two connecting blocks has a through groove on one side, and the inner diameter of the through groove is adapted to the narrow end of the outer wall of the T-shaped shaft.

[0014] This utility model has the following beneficial effects:

[0015] This invention features a parallel grouting method that uses a steel pipe at the end of the grouting pipe, with three outlets on the steel pipe connected to three grout stop plugs via connecting pipe heads. This not only improves construction efficiency but also prevents the grouting pipe from bursting due to increased pressure. Furthermore, each steel pipe outlet is equipped with an independent valve, allowing individual operation of any grout stop plug and enhancing practicality. Additionally, the connection between components via connecting pipe heads improves installation efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the connection structure between the connecting pipe head and auxiliary components of this utility model;

[0019] Figure 3 This is a cross-sectional view of the internal connection structure of the first sleeve of this utility model;

[0020] Figure 4 This is a schematic diagram of the connection structure of the outer wall of the second sleeve of this utility model.

[0021] The attached diagram lists the components represented by each number as follows:

[0022] 11. Grouting pipe; 12. Steel pipe; 13. Pressure gauge; 14. Grout stop plug pipe; 15. Grout stop plug head; 16. Main grouting valve; 17. Independent valve; 21. First sleeve; 211. Slot; 212. Mounting groove; 213. Sealing pipe; 214. Sealing seat; 215. Spring; 216. Sealing groove; 217. Sliding block; 22. Second sleeve; 221. Fixed seat; 222. Sealing ring; 31. T-shaft; 32. Connecting block; 33. Elastic block; 34. Through groove. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0025] Please see Figure 1-4 As shown, this utility model is a tooling device for grouting in railway subgrade treatment, comprising:

[0026] Grouting pipe 11, one end of which is fixedly provided with steel pipe 12, one end of the outer wall of steel pipe 12 is fixedly provided with grouting main valve 16, three discharge ports are connected to one side of the outer wall of steel pipe 12, each of the three discharge ports is fixedly provided with an independent valve 17, one end of each of the three discharge ports is fixedly provided with a connecting pipe head, and a grout stop plug pipe 14 is connected through the connecting pipe head, one end of the grout stop plug pipe 14 is fixedly provided with a grout stop plug head 15.

[0027] Grouting pipe 11 is used to transport grouting fluid, and independent valve 17 is used to control the grouting of three grout stopper heads 15 respectively. Steel pipe 12 is connected to grouting pipe 11 and grout stopper pipe 14 is connected to grout stopper head 15 through connecting pipe heads.

[0028] The connecting pipe head includes a first sleeve 21 and a second sleeve 22. One end of the first sleeve 21 has two slots 211, and one end of the inner wall of the first sleeve 21 has two mounting grooves 212. The other end of the inner wall of the first sleeve 21 is connected to a sealing pipe 213. A sealing seat 214 is slidably provided on the outer wall of the sealing pipe 213. Four springs 215 are fixedly provided on one side of the sealing seat 214. Fixing seats 221 are fixedly provided on both sides of the outer wall of the second sleeve 22.

[0029] The other end of the first sleeve 21 is connected to the outlet of the steel pipe 12. The other ends of the four springs 215 are fixedly connected to the other end of the inner wall of the first sleeve 21. The distance between the fixing seat 221 and the inner wall of the second sleeve 22 is adapted to the wall thickness of the first sleeve 21. The inner diameter of the second sleeve 22 is adapted to the outer diameter of the sealing pipe 213.

[0030] A pressure gauge 13 is fixedly installed at the top of the outer wall of the grouting pipe 11;

[0031] Pressure gauge 13 is used to measure and display the internal pressure of steel pipe 12.

[0032] A sealing groove 216 is provided on the other side of the sealing seat 214. Two sliders 217 are fixedly provided on the outer wall of the sealing seat 214. The outer walls of the two sliders 217 are slidably connected to the upper and lower ends of the inner wall of the first sleeve 21, respectively.

[0033] The outer diameter of the sealing seat 214 is adapted to the inner diameter of the first sleeve 21. The slider 217 is used to assist and limit the movement of the sealing seat 214. The upper and lower ends of the inner wall of the first sleeve 21 are provided with sliding grooves adapted to the slider 217.

[0034] A sealing ring 222 is fixedly provided at one end of the second sleeve 22, and the size of the sealing ring 222 is adapted to the sealing groove 216;

[0035] The sealing ring 222 is used to increase the sealing between the second sleeve 22 and the sealing tube 213 and the sealing seat 214.

[0036] The two slots 211 and the two mounting slots 212 are arranged in a cross shape.

[0037] Working principle: During installation, align the second sleeve 22 at one end of the grout stopper tube 14 with and insert it into the first sleeve 21 at the outlet of the steel pipe 12. After the second sleeve 22 engages with the sealing tube 213 in the first sleeve 21, as the second sleeve 22 continues to move inward, it engages with the sealing seat 214 on the outer wall of the sealing tube 213. This movement causes the sealing seat 214 to move inward, compressing the spring 215 until the second sleeve 22 is in contact with the first sleeve 21. Then, rotate the second sleeve 22 90 degrees, aligning the fixing seat 221 on the outer wall of the second sleeve 22 with the mounting groove 212 on the inner wall of the first sleeve 21. At this point, under the elastic action of the spring 215, the sealing seat 214 drives the second sleeve 22 to move in the opposite direction, causing the fixing seat 221 to engage with the mounting groove 212, thereby stopping the grout plug. The grout plug pipe 14 and the steel pipe 12 are connected and fixed. Similarly, the steel pipe 12 and the grouting pipe 11, the grout stop plug pipe 14 and the grout stop plug head 15 are connected and fixed. Then, the main grouting valve 16 is closed and the independent valves 17 are opened respectively. At this time, the grouting liquid in the grouting pipe 11 is delivered to the steel pipe 12 and then sprayed out from the three grout stop plug heads 15 through the three grout stop plug pipes 14 respectively. By setting the steel pipe 12 at the end of the grouting pipe 11 and connecting the three grout stop plugs through the three outlets, the construction efficiency can be improved and the grouting delivery pipe pressure can be increased to avoid bursting. At the same time, each outlet of the steel pipe 12 is equipped with an independent valve 17, so that any grout stop plug can be operated independently, improving practicality. Secondly, this method is also convenient for connecting and fixing the components. The whole installation process is time-saving, labor-saving and easy to operate.

[0038] Please see Figure 1-4 As shown, this embodiment, based on the above embodiment, further includes:

[0039] The auxiliary fixing component includes two T-shaped shafts 31. The outer walls of the two T-shaped shafts 31 are slidably provided with connecting blocks 32. The opposite sides of the two connecting blocks 32 are respectively engaged with elastic blocks 33. The opposite ends of the two elastic blocks 33 are respectively fixed on both sides of the outer wall of the first sleeve 21.

[0040] One end of the T-shaped shaft 31 is fixedly mounted on the outer wall of the second sleeve 22, and a locking hole adapted to the elastic block 33 is provided on one side of the connecting block 32.

[0041] Each of the two connecting blocks 32 has a through groove 34 on one side, and the inner diameter of the through groove 34 is adapted to the narrow end of the outer wall of the T-shaped shaft 31.

[0042] Working principle: After the first sleeve 21 and the second sleeve 22 of each component are connected and fixed, the connecting block 32 on the second sleeve 22 is moved toward the first sleeve 21 until the connecting block 32 engages with the elastic block 33 on the outer wall of the first sleeve 21. In this way, the first sleeve 21 and the second sleeve 22 can be connected and fixed for a second time, thereby further increasing the firmness of the connection between each component.

[0043] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A tooling device for grouting in railway subgrade treatment, characterized in that, include: Grouting pipe (11), one end of which is fixedly provided with a steel pipe (12), one end of which is fixedly provided with a grouting main valve (16), three discharge ports are connected to one side of the outer wall of the steel pipe (12), each of the three discharge ports is fixedly provided with an independent valve (17), one end of each of the three discharge ports is fixedly provided with a connecting pipe head, and a grout stop plug pipe (14) is connected through the connecting pipe head, and one end of the grout stop plug pipe (14) is fixedly provided with a grout stop plug head (15). The connecting pipe head includes a first sleeve (21) and a second sleeve (22). One end of the first sleeve (21) has two slots (211), and one end of the inner wall of the first sleeve (21) has two mounting grooves (212). The other end of the inner wall of the first sleeve (21) is connected to a sealing pipe (213). The outer wall of the sealing pipe (213) is slidably provided with a sealing seat (214). Four springs (215) are fixedly provided on one side of the sealing seat (214). Fixing seats (221) are fixedly provided on both sides of the outer wall of the second sleeve (22).

2. The tooling equipment for grouting railway subgrade treatment according to claim 1, characterized in that: A pressure gauge (13) is fixedly installed at the top of the outer wall of the grouting pipe (11).

3. The tooling equipment for grouting railway subgrade treatment according to claim 1, characterized in that: A sealing groove (216) is provided on the other side of the sealing seat (214). Two sliders (217) are fixedly provided on the outer wall of the sealing seat (214). The outer walls of the two sliders (217) are slidably connected to the upper and lower ends of the inner wall of the first sleeve (21).

4. The tooling equipment for grouting railway subgrade treatment according to claim 3, characterized in that: A sealing ring (222) is fixedly provided at one end of the second sleeve (22), and the size of the sealing ring (222) is adapted to the sealing groove (216).

5. The tooling equipment for grouting railway subgrade treatment according to claim 1, characterized in that: The two slots (211) and the two mounting slots (212) are arranged in a cross shape.

6. The tooling equipment for grouting railway subgrade treatment according to claim 1, characterized in that: It also includes auxiliary fixing components, which include two T-shaped shafts (31), each of which has a connecting block (32) slidably mounted on its outer wall. Each of the two connecting blocks (32) has an elastic block (33) engaged on its opposite side. The opposite ends of the two elastic blocks (33) are respectively fixed on both sides of the outer wall of the first sleeve (21).

7. The tooling equipment for grouting railway subgrade treatment according to claim 6, characterized in that: Both connecting blocks (32) have through grooves (34) on one side, and the inner diameter of the through grooves (34) is adapted to the narrow end of the outer wall of the T-shaped shaft (31).