Pipeline fixing support and shield tunneling machine

By designing pipeline fixing brackets and using spherical bearings or flexible hinge connection structures, the stress concentration problem caused by the shield machine pipeline fixing method not being suitable for movement is solved, flexible support of the pipeline is achieved, wear and failure are reduced, and construction efficiency is improved.

CN223374415UActive Publication Date: 2025-09-23CHINA RAILWAY CONSTR HEAVY IND
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Patent Information

Application Number
CN202423066024.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-12
Publication Date
2025-09-23
Estimated Expiration
2034-12-12

AI Technical Summary

Technical Problem

The existing pipeline fixing method is difficult to adapt to the movement of the active hinged part of the shield machine, resulting in stress concentration, increased wear or even damage to the pipeline.

Method used

A pipeline fixing bracket is designed, including a fixing plate, a movable connection structure and a pipe clamp. The movable connection between the pipe clamp and the fixing plate is achieved through a spherical bearing or a flexible hinge, allowing the pipeline to have multi-directional freedom and reducing stress concentration.

Benefits of technology

It effectively reduces the dynamic load and displacement of the pipeline during the uphill and downhill and turning processes of the shield machine, reduces the failure rate, and improves the progress and efficiency of the project.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of mud pipeline supporting, in particular to a pipeline fixing support and a shield tunneling machine, the pipeline fixing support comprises a fixing plate, a movable connecting structure and a pipe clamp, and the fixing plate is arranged on the shield tunneling machine; the two ends of the pipe clamp are movably connected with the fixing plate through the movable connecting structures respectively, and an installation space for arranging a pipeline is formed between the pipe clamp and the fixing plate. According to the utility model, the slurry pipeline is arranged in the mounting space, the pipeline is supported by the pipe clamp, and the pipe clamp is movably connected with the fixed plate through the movable connecting structure so as to allow the multidirectional degree of freedom of the pipeline, so that the stress concentration caused by rigid fixation is reduced; the device can adapt to various dynamic loads and displacements generated by the shield tunneling machine on the pipeline in the uphill and downhill and turning processes, construction interruption caused by pipeline faults is reduced, and the overall project progress and efficiency can be improved.
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Description

Technical Field

[0001] The utility model relates to the technical field of mud pipeline supports, in particular to a pipeline fixing bracket and a shield machine. Background Art

[0002] Slurry shield machines are a common piece of equipment used in tunneling projects. During tunneling, this machine requires a slurry circulation system to maintain the stability of the excavation face and transport the excavated soil and sand. The shield machine performs maneuvers such as turning and ascending and descending slopes, depending on the construction process. Due to the complex geological environment of the excavated soil layer, the earth pressure on various parts of the shield body is unevenly distributed, causing the shield machine's forward direction to deviate from the original tunnel design centerline. To reduce this deviation, improve project quality, and ensure the shield machine advances along the correct route, the shield machine's posture needs to be adjusted. Therefore, an articulated mechanism is installed on the shield body to assist the shield equipment in achieving underground posture changes. Traditional pipe fixing methods often struggle to adapt to the movement of the active articulated parts, leading to stress concentration, increased wear, or even damage to the pipes.

[0003] Therefore, it is necessary to provide a new pipeline fixing bracket and shield machine to solve the above technical problems. Utility Model Content

[0004] The main purpose of the utility model is to provide a pipeline fixing bracket and a shield machine, aiming to solve the problem that the existing pipeline fixing method is difficult to adapt to the operation of the active hinged part, resulting in pipeline stress concentration, increased wear or even damage.

[0005] To achieve the above-mentioned purpose, the pipeline fixing bracket proposed in the utility model includes a fixing plate, a movable connecting structure and a pipe clamp. The fixing plate is used to fix the entire pipeline fixing bracket in the installation position; the two ends of the pipe clamp are respectively movably connected to the fixing plate through the movable connecting structure, and an installation space for pipeline installation is formed between the pipe clamp and the fixing plate.

[0006] Optionally, the movable connection structure is a spherical bearing, and both ends of the pipe clamp are movably connected to the fixing plate through the spherical bearings.

[0007] Optionally, the movable connection structure is a flexible hinge, and both ends of the flexible hinge are movably connected to the fixing plate and the pipe clamp respectively.

[0008] Optionally, the pipe clamp includes a supporting portion and two connecting portions arranged at both ends of the supporting portion, and the installation space is formed between the supporting portion and the fixed plate; two first connecting rings are provided on the connecting portion and are spaced apart; two second connecting rings corresponding to the first connecting rings are provided on the fixed plate; and the two ends of the movable connecting structure are movably connected to the first connecting ring and the second connecting ring respectively.

[0009] Optionally, an inner wall of the supporting portion facing the installation space is a U-shaped wall.

[0010] Optionally, a protective pad is provided on a side of the supporting portion facing the installation space.

[0011] Optionally, the pipe clamp further includes two reinforcing plates, and the two reinforcing plates are respectively connected between the two connecting parts and the supporting part.

[0012] Optionally, the pipeline fixing bracket further includes an extension frame, the fixing plate is detachably arranged at the installation position through the extension frame, and the fixing plate is welded to an end of the extension frame away from the shield machine.

[0013] In addition, the utility model also provides a shield machine, which includes a shield machine body, a front shield, a middle shield, a mud pipe and the pipeline fixing bracket as described above, wherein the front shield is arranged on the shield machine body; the middle shield is connected to the front shield through an articulated oil cylinder; and the mud pipe is arranged on the middle shield through the pipeline fixing bracket.

[0014] Optionally, there are multiple pipeline fixing brackets, and the multiple pipeline fixing brackets are arranged at intervals along the length direction of the mud pipe.

[0015] In the technical solution of the present utility model, the mud pipeline is arranged in the installation space and supported by the pipe clamp. The pipe clamp is movably connected to the fixed plate through a movable connection structure to allow multi-directional freedom of the pipeline, thereby reducing the stress concentration caused by rigid fixation, and being able to adapt to various dynamic loads and displacements generated by the shield machine on the pipeline during uphill and downhill and turning processes, reducing construction interruptions caused by pipeline failures, and helping to improve the overall project progress and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0017] Figure 1 This is a schematic diagram of the installation of the pipeline fixing bracket in Example 1 of the present utility model;

[0018] Figure 2 This is a schematic structural diagram of the pipeline fixing bracket in Example 1 of the present utility model;

[0019] Figure 3 This is a front view of the pipeline fixing bracket in Example 1 of the present utility model;

[0020] Figure 4 This is a side view of the pipeline fixing bracket in Example 1 of the present utility model;

[0021] Figure 5 This is a force diagram of the pipeline fixing bracket in Example 1 of the present utility model;

[0022] Figure 6 This is a partial structural diagram of the shield machine in Example 3 of the present utility model when it is in a horizontal left and right turning working state;

[0023] Figure 7 This is a schematic diagram of the forces acting on the pipeline fixing bracket when the shield machine is in a horizontal left and right turning working state in Example 2 of the present utility model;

[0024] Figure 8 This is a partial structural diagram of the shield machine in Example 3 of the present utility model when it is in a vertical inclined shaft excavation working state;

[0025] Figure 9 This is a force diagram of the pipeline fixing bracket when the shield machine is in the vertical inclined shaft excavation working state in Example 2 of the present utility model.

[0026] Description of Figure Numbers:

[0027] 1. Shield machine body, 2. Front shield, 3. Middle shield, 4. Mud pipe, 5. Articulated cylinder, 6. Extension frame, 7. Pipe fixing bracket, 7.1. Fixing plate, 7.1.1. Second connecting ring, 7.2. Movable connecting structure, 7.3. Pipe clamp, 7.3.1. Supporting part, 7.3.2. Connecting part, 7.3.3. First connecting ring, 7.3.4. Reinforcement plate, 7.4. Installation space, 8. Pipeline gravity, 9. Eccentric load, 10. H frame, 11. Support beam.

[0028] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0029] The following describes the embodiments of the present invention in detail with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered by the claims.

[0030] The utility model provides a pipeline fixing bracket and a shield machine, aiming to solve the problem that the existing pipeline fixing method is difficult to adapt to the operation of the active hinged part, resulting in pipeline stress concentration, increased wear or even damage.

[0031] Example 1

[0032] like Figures 1 to 4 As shown, the pipeline fixing bracket 7 includes a fixing plate 7.1, a movable connection structure 7.2, and a pipe clamp 7.3. The fixing plate 7.1 is mounted on the shield machine. The ends of the pipe clamp 7.3 are movably connected to the fixing plate 7.1 via a movable connection structure 7.2. An installation space 7.4 for the pipeline is formed between the pipe clamp 7.3 and the fixing plate 7.1. In actual operation, the pipeline is installed in the installation space 7.4 and supported by the pipe clamp 7.3. The pipe clamp 7.3 is movably connected to the fixing plate 7.1 via the movable connection structure to achieve multi-directional freedom of the pipeline, thereby reducing stress concentration caused by rigid fixation and being able to adapt to the various dynamic loads and displacements imposed on the pipeline by the shield machine during uphill and downhill climbing and turning. This reduces construction interruptions caused by pipeline failures and helps improve overall project progress and efficiency.

[0033] The movable connection structure 7.2 is a flexible hinge, with both ends of the flexible hinge movably connected to the fixed plate 7.1 and the pipe clamp 7.3. The two ends of the pipe clamp 7.3 are connected to the fixed plate 7.1 via the flexible hinges, enabling the pipe clamp 7.3 to flexibly clamp the pipeline, ensuring a certain degree of freedom. The pipe clamp 7.3 deflects along the pipeline, reducing stress concentration in the mud pipe 4 and extending the service life of the pipeline.

[0034] Specifically, the pipe clamp 7.3 includes a supporting portion 7.3.1 and two connecting portions 7.3.2 disposed at either end of the supporting portion 7.3.1. An installation space 7.4 is formed between the supporting portion 7.3.1 and the fixed plate 7.1. The connecting portion 7.3.2 is provided with two first connecting rings 7.3.3 spaced apart from each other. The fixed plate 7.1 is provided with two second connecting rings 7.1.1 corresponding to the first connecting rings 7.3.3. The movable connecting structure 7.2 is movably connected to the first and second connecting rings 7.3.3 and 7.1.1 at both ends. The second connecting rings 7.1.1 and the first connecting rings 7.3.3 are provided on the connecting portion 7.3.2 of the fixed plate 7.1 and the pipe clamp 7.3, respectively, to facilitate connection of the pipe clamp 7.3 and the fixed plate 7.1 by the movable connecting structure 7.2. Preferably, the movable connection structure 7.2 is detachably connected to the first connection ring 7.3.3 and the second connection ring 7.1.1 respectively, so as to facilitate regular inspection and maintenance, contribute to the long-term stable operation of the system, and is an important embodiment of practicality.

[0035] Furthermore, the inner wall of the supporting portion 7.3.1 facing the installation space 7.4 is a U-shaped wall. The U-shaped wall facilitates better fit between the supporting portion 7.3.1 of the pipe clamp 7.3 and the pipeline, increases the contact area between the pipe clamp 7.3 and the pipeline, and achieves stable support and positioning of the pipeline.

[0036] Furthermore, a protective pad is provided on the side of the support portion 7.3.1 facing the installation space 7.4. The protective pad, located on the support portion 7.3.1 where the pipe clamp 7.3 contacts the mud pipe 4, reduces direct friction between the pipe and the clamp 7.3, thereby reducing wear and extending the service life of the pipe and the clamp 7.3. Preferably, the protective pad is made of a wear-resistant material such as polytetrafluoroethylene or nylon.

[0037] In this embodiment, the pipe clamp 7.3 further includes two reinforcing plates 7.3.4, which are respectively connected between the two connecting portions 7.3.2 and the supporting portion 7.3.1. The reinforcing plates 7.3.4 are fixed to the connection between the supporting portion and the supporting portion 7.3.1 of the pipe clamp 7.3 by welding, thereby enhancing the structural strength of the pipe clamp 7.3.

[0038] In addition, the pipe fixing bracket 7 also includes an extension bracket 6, which is detachably connected to the shield machine. A fixing plate 7.1 is welded to the end of the extension bracket 6 that is away from the shield machine. The extension bracket 6 has an L-shaped structure, and the fixing plate 7.1 is connected to the shield machine through the extension bracket 6 to ensure a clear distance between the pipe clamp 7.3 and the shield machine, preventing interference between the pipes installed on the pipe clamp 7.3 and the shield machine.

[0039] Example 2

[0040] The difference from Example 1 is that the movable connection structure 7.2 is a spherical bearing, and the two ends of the pipe clamp 7.3 are movably connected to the fixed plate 7.1 via the spherical bearings. The connection between the pipe clamp 7.3 and the fixed plate 7.1 via the spherical bearings also ensures the multi-directional freedom of the pipe on the pipe clamp 7.3.

[0041] Example 3

[0042] This embodiment provides a shield machine, which includes a shield machine body 1, a front shield 2, a middle shield 3, a mud pipe 4 and the above-mentioned pipeline fixing bracket 7. The front shield 2 is arranged on the shield machine body 1; the middle shield 3 is connected to the front shield 2 through an articulated cylinder 5; and the mud pipe 4 is arranged on the middle shield 3 through the pipeline fixing bracket 7.

[0043] See Figure 5 , the pipeline fixing bracket 7 is fixed to the shield machine through the extension frame 6; when the shield machine is excavating in a straight line, the mud pipe 4 is only affected by the gravity of the pipeline 8 and is fixed to the shield machine through the pipe clamp 7.3;

[0044] See Figure 6 and Figure 7 , the shield machine is in a vertical inclined shaft excavation working state. Assuming that the shield machine is excavating upward in the excavation direction, the articulated oil cylinder 5 located in the middle and lower side of the shield body along the excavation direction is in an extended state, so that the front shield 2 and the middle shield 3 will have a certain angle; the mud pipe 4 is connected to the front shield 2, and a downward eccentric load 9 is generated at this time. The traditional fixed pipe clamp 7.3 is a rigid connection and cannot adapt to the environment, resulting in stress concentration in the pipeline; when subjected to the downward eccentric load 9, the pipeline fixing bracket 7 can produce a certain offset with the mud pipe 4 through the movable connection structure, thereby reducing the stress concentration in the mud pipe 4 and extending the service life of the pipeline;

[0045] See Figure 8 and Figure 9 The shield machine is in a horizontal left-right turning working state. Assuming that the shield machine is excavating to the right along the excavation direction, the articulated cylinder 5 located on the left side of the shield body along the excavation direction is in an extended state, and the front shield 2 and the middle shield 3 will have a certain angle; the mud pipe 4 will deviate to the left, and the pipeline fixing bracket 7 will be subjected to a leftward eccentric load force 9. The pipe clamp 7.3 is flexibly fixed by a movable connection structure. The pipe clamp 7.3 will deviate to a certain extent with the mud pipe 4, reducing the stress concentration of the mud pipe 4 and extending the service life of the pipeline.

[0046] In this embodiment, there are multiple pipe fixing brackets 7, which are spaced apart along the length of the mud pipe 4. The equal spacing of the multiple pipe fixing brackets 7 along the length of the mud pipe 4 in the middle shield 3 area, along with the appropriate number and spacing of the pipe fixing brackets 7, ensures uniform support and balanced load distribution throughout the entire piping system.

[0047] In addition, the shield machine also includes an H frame and a joist. The H frame is connected and fixed to the middle shield, the joist is fixed on the H frame, and the pipeline fixing bracket 7 is fixed to the joist through the extension frame 6.

[0048] Since the shield machine includes the pipeline fixing bracket 7 as described above, the shield machine has all the beneficial effects of the pipeline fixing bracket 7 described above, which will not be described in detail here.

[0049] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the utility model concept, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A pipeline fixing bracket, characterized in that: The invention comprises a fixing plate (7.1), a movable connection structure (7.2) and a pipe clamp (7.3); the fixing plate (7.1) is used to fix the entire pipeline fixing bracket (7) at the installation position; both ends of the pipe clamp (7.3) are movably connected to the fixing plate (7.1) via the movable connection structure (7.2), and an installation space (7.4) for setting the pipeline is formed between the pipe clamp (7.3) and the fixing plate (7.1).

2. The pipeline fixing bracket according to claim 1, characterized in that: The movable connection structure (7.2) is a spherical bearing, and both ends of the pipe clamp (7.3) are movably connected to the fixed plate (7.1) via the spherical bearings.

3. The pipeline fixing bracket according to claim 1, characterized in that: The movable connection structure (7.2) is a flexible hinge, and both ends of the flexible hinge are movably connected to the fixed plate (7.1) and the pipe clamp (7.3) respectively.

4. The pipeline fixing bracket according to claim 2, characterized in that: The pipe clamp (7.3) comprises a supporting portion (7.3.1) and two connecting portions (7.3.2) arranged at both ends of the supporting portion (7.3.1); the mounting space (7.4) is formed between the supporting portion (7.3.1) and the fixing plate (7.1); two first connecting rings (7.3.3) arranged at intervals are provided on the connecting portion (7.3.2); two second connecting rings (7.1.1) corresponding to the first connecting rings (7.3.3) are provided on the fixing plate (7.1); and the two ends of the movable connecting structure (7.2) are movably connected to the first connecting ring (7.3.3) and the second connecting ring (7.1.1), respectively.

5. The pipeline fixing bracket according to claim 4, characterized in that: The inner wall of the supporting portion (7.3.1) facing the installation space (7.4) is a U-shaped wall.

6. The pipeline fixing bracket according to claim 5, characterized in that: A protective pad is provided on the side of the supporting portion (7.3.1) facing the installation space (7.4).

7. The pipeline fixing bracket according to claim 6, characterized in that: The pipe clamp (7.3) further comprises two reinforcing plates (7.3.4), and the two reinforcing plates (7.3.4) are respectively connected between the two connecting parts (7.3.2) and the supporting part (7.3.1).

8. The pipeline fixing bracket according to any one of claims 1 to 7, characterized in that: The pipeline fixing bracket (7) further comprises an extension frame (6), the fixing plate (7.1) is detachably arranged at an installation position via the extension frame (6), and the fixing plate (7.1) is welded to an end of the extension frame (6) away from the shield machine.

9. A shield machine, characterized in that: The shield machine comprises a shield machine body (1), a front shield (2), a middle shield (3), a mud pipe (4) and a pipeline fixing bracket according to any one of claims 1 to 8, wherein the front shield (2) is arranged on the shield machine body (1); the middle shield (3) is connected to the front shield (2) through an articulated oil cylinder (5); and the mud pipe (4) is arranged on the middle shield (3) through the pipeline fixing bracket (7).

10. The shield machine according to claim 9, characterized in that: There are multiple pipeline fixing brackets (7), and the multiple pipeline fixing brackets (7) are arranged at intervals along the length direction of the mud pipe (4).