Self-locking shield tunnel segment

By introducing limiting structures and reinforcing bars into the shield tunnel segments, the problems of inconvenient splicing and misalignment were solved, achieving efficient fixing and enhanced splicing effect for tunnel segments.

CN223661839UActive Publication Date: 2025-12-12GUANGDONG NEW BENDA BUILDING MATERIALS IND CO LTD
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Patent Information

Application Number
CN202520341110.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-02-28
Publication Date
2025-12-12
Estimated Expiration
2035-02-28

AI Technical Summary

Technical Problem

Existing shield tunnel segments are not easy to limit and fix during splicing, and are prone to accidental displacement, which affects splicing efficiency.

Method used

A self-locking shield tunnel segment was designed, which adopts a limiting structure including an installation groove, an installation block, a limiting plate, a limiting groove, a limiting spring, a limiting sleeve, and a limiting rod. The segment is locked by the elastic embedding of the limiting plate into the limiting groove. Reinforcing steel bars and anti-fouling layers are set inside the segment to increase strength and stability.

Benefits of technology

It facilitates the fixing and positioning of tunnel segments, improves splicing efficiency, enhances the strength and sealing of the segments, and prevents displacement and water seepage.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of tunnel segments, and discloses a self-locking shield tunnel segment which comprises a first segment, a second segment is arranged on the left side of the first segment, and a limiting structure facilitating splicing of the first segment and the second segment is arranged between the first segment and the second segment. According to the self-locking type shield tunnel segment, through the arrangement of the mounting groove, the limiting sleeve rod and the spring groove, a limiting plate extrudes a limiting spring, then a mounting block is placed in the mounting groove, the mounting block is pushed after the mounting block is placed, and the mounting block drives the limiting plate and the limiting spring to move in the mounting groove; after a limiting plate moves to a proper position, a limiting spring enables the limiting plate to be embedded in a limiting groove through the elasticity of the limiting spring, so that the first segment and the second segment can be locked, and the problems that the tunnel segment is inconvenient to limit and fix, the tunnel segment is prone to accidental deviation, and the service life of the tunnel segment is affected are solved. And therefore, the splicing efficiency of the tunnel segments is easily influenced.
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Description

Technical Field

[0001] This utility model relates to the field of tunnel segment technology, specifically a self-locking shield tunnel segment. Background Technology

[0002] Tunnel boring machine (TBM) segments are the main assembly components in TBM construction. They form the innermost barrier of the tunnel and bear the responsibility of resisting soil pressure, groundwater pressure, and some special loads. TBM segments are usually produced using high-strength impermeable concrete to ensure reliable load-bearing capacity and waterproof performance. The quality of TBM segments directly affects the overall quality and safety of the tunnel.

[0003] Common shield tunnel segments also have some problems. For example, multiple sets of tunnel segments need to be spliced ​​together during use, but it is inconvenient to limit and fix the tunnel segments during splicing. The tunnel segments are prone to accidental displacement, which can easily affect the efficiency of tunnel segment splicing.

[0004] Therefore, we propose a self-locking shield tunnel segment to improve the above-mentioned problems. Utility Model Content

[0005] The purpose of this invention is to provide a self-locking shield tunnel segment to solve the problems mentioned in the background art, such as the inconvenience of limiting and fixing the tunnel segment, the easy accidental displacement of the tunnel segment, and the easy impact on the tunnel segment splicing efficiency.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a self-locking shield tunnel segment, comprising a first segment, characterized in that: a second segment is provided on the left side of the first segment, and a limiting structure is provided between the first segment and the second segment to facilitate splicing of the first segment and the second segment;

[0007] The limiting structure includes a mounting groove, a mounting block, and a limiting plate. The mounting block is fixedly connected to the left side of the first tube and the second tube respectively. The right side of the inside of the first tube and the second tube is provided with a mounting groove. Limiting grooves are provided at the upper and lower ends of the mounting groove. Spring grooves are provided at the upper and lower ends of the mounting block. A limiting spring is installed inside the spring groove. A limiting sleeve is provided on the side of the limiting spring near the middle. A limiting rod is provided inside the limiting sleeve. A limiting plate is fixedly connected to the side of the limiting spring near the outside.

[0008] As a further technical solution of this utility model, the mounting block on one side of the first tube segment is embedded in the mounting groove inside the second tube segment, the limiting plate is embedded inside the limiting groove, and the inner sidewall of the mounting groove is provided with a second sealing gasket.

[0009] As a further technical scheme of the utility model, the limiting sleeve and the limiting sleeve rod are installed between the limiting plate and the mounting block.

[0010] As a further technical scheme of the utility model, the first reinforcing steel bar and the second reinforcing steel bar are arranged between the concrete, the second reinforcing steel bar is arranged in multiple groups, and the second reinforcing steel bars are arranged in a staggered manner.

[0011] As a further technical scheme of the utility model, the first reinforcing steel bar and the second reinforcing steel bar are arranged between the concrete, the second reinforcing steel bar is arranged in multiple groups, and the second reinforcing steel bars are arranged in a staggered manner.

[0012] As a further technical scheme of the utility model, the first reinforcing steel bar and the second reinforcing steel bar are arranged between the concrete, the second reinforcing steel bar is arranged in multiple groups, and the second reinforcing steel bars are arranged in a staggered manner.

[0013] As a further technical scheme of the utility model, the first reinforcing steel bar and the second reinforcing steel bar are arranged between the concrete, the second reinforcing steel bar is arranged in multiple groups, and the second reinforcing steel bars are arranged in a staggered manner.

[0014] As a further technical scheme of the utility model, the first reinforcing steel bar and the second reinforcing steel bar are arranged between the concrete, the second reinforcing steel bar is arranged in multiple groups, and the second reinforcing steel bars are arranged in a staggered manner.

[0015] Compared with the prior art, the self-locking shield tunnel segment has the advantages that the self-locking shield tunnel segment can conveniently splice and fix the tunnel segment, increase the strength of the tunnel segment, and conveniently position the tunnel segment.

[0016] When the first segment and the second segment need to be spliced together, the limiting plate is pressed, the limiting plate extrudes the limiting spring, and then the mounting block is placed in the mounting groove; after being placed, the mounting block is pushed, the mounting block drives the limiting plate and the limiting spring to move in the mounting groove; when the limiting plate moves to the appropriate position, the limiting plate is embedded in the limiting groove by the elasticity of the limiting spring, thereby the first segment and the second segment can be locked, the first segment and the second segment are prevented from being separated accidentally, and the limiting sleeve and the limiting sleeve rod in the limiting spring can improve the stability of the limiting spring.

[0017] Through setting the first reinforcing steel bar, the second reinforcing steel bar, the reserved groove and the anti-fouling layer, the anti-fouling layer coated outside the first pipe piece and the second pipe piece is a Teflon coating, the Teflon coating has moisture resistance, the surface of the Teflon coating is not water and oil, a small amount of dirt can be removed by simple wiping, and the Teflon coating has certain wear resistance, the first reinforcing steel bar and the second reinforcing steel bar inside the first pipe piece and the second pipe piece can increase the strength of the first pipe piece and the second pipe piece, and prevent the first pipe piece and the second pipe piece from being bent or damaged during use, thereby increasing the service life of the first pipe piece and the second pipe piece.

[0018] Through setting the groove, the first sealing gasket, the positioning hole, the sealing sleeve, the positioning block and the clamping block, when the rear end of the first pipe piece needs to be spliced, the clamping block of another group of first pipe pieces is placed in the groove, and the positioning block is embedded in the positioning hole during placement, so that the other group of first pipe pieces can be positioned conveniently, and the first pipe pieces are prevented from deviating during splicing, and the first sealing gasket and the sealing sleeve can increase the sealing performance of the connection, and prevent water from entering the connection. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a front view cross-sectional structure schematic view of the utility model;

[0020] Figure 2 It is a first pipe piece top view cross-sectional structure schematic view of the utility model;

[0021] Figure 3 It is a first pipe piece top view cross-sectional structure schematic view of the utility model; Figure 1 It is a first pipe piece top view cross-sectional structure schematic view of the utility model;

[0022] Figure 4 It is a first pipe piece top view cross-sectional structure schematic view of the utility model.

[0023] In the drawing: 1, first pipe piece; 2, second pipe piece; 3, groove; 4, first sealing gasket; 5, mounting groove; 6, second sealing gasket; 7, positioning hole; 8, sealing sleeve; 9, mounting block; 10, limiting plate; 11, positioning block; 12, clamping block; 13, limiting groove; 14, first reinforcing steel bar; 15, second reinforcing steel bar; 16, concrete; 17, limiting spring; 18, limiting sleeve; 19, limiting sleeve rod; 20, spring groove; 21, reserved groove; 22, anti-fouling layer. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0025] Referring to Figures 1-4 The utility model provides an embodiment, a self -locking formula shield tunnel segment, including first segment 1, first segment 1 left side is provided with second segment 2, first segment 1 and second segment 2 between being provided with the limiting structure convenient for to first segment 1 and second segment 2 splicing,

[0026] Limiting structure includes installation groove 5, mounting block 9 and limiting plate 10, first segment 1 and second segment 2 left side are fixedly connected with mounting block 9 respectively, and the right side in first segment 1 and second segment 2 is seted up with installation groove 5 respectively, the upper and lower ends in installation groove 5 are seted up with limiting slot 13, and the upper and lower ends in mounting block 9 are seted up with spring groove 20, and the inside of spring groove 20 is installed with limiting spring 17, and the side close to the middle in limiting spring 17 is provided with limiting sleeve 18, and the inside of limiting sleeve 18 is provided with limiting sleeve rod 19, and the side close to the outside of limiting spring 17 is fixedly connected with limiting plate 10;

[0027] The mounting block 9 of first segment 1 side is embedded in the installation groove 5 in the second segment 2, the limiting plate 10 is embedded in the inside of limiting slot 13, the inner side wall of installation groove 5 is provided with second sealing gasket 6, limiting sleeve rod 19 slides in the inside of limiting sleeve 18, and limiting sleeve 18 and limiting sleeve rod 19 are installed between limiting plate 10 and mounting block 9;

[0028] Specifically, as Figure 1 , figure, Figure 3 And Figure 4 Indicated, need when first segment 1 and second segment 2 splice together press limiting plate 10, make limiting plate 10 extrude limiting spring 17 and then put mounting block 9 to the inside of installation groove 5, push mounting block 9 after putting, and mounting block 9 drives limiting plate 10 and limiting spring 17 to move in the inside of installation groove 5, when limiting plate 10 moves to the appropriate position, limiting spring 17 will make limiting plate 10 embedded in the inside of limiting slot 13 through the elasticity of itself, so that first segment 1 and second segment 2 can be locked, prevent first segment 1 and second segment 2 accidental separation, and the limiting sleeve 18 and limiting sleeve rod 19 in the inside of limiting spring 17 can improve the stability of limiting spring 17.

[0029] The inner part of the first pipe piece 1 and the second pipe piece 2 is respectively provided with a first reinforcing steel bar 14, the first reinforcing steel bar 14 is provided with a second reinforcing steel bar 15 between, the outer part of the first pipe piece 1 and the second pipe piece 2 is coated with an anti-fouling layer 22, the top end of the first pipe piece 1 and the second pipe piece 2 is provided with a reserved groove 21, the inner part of the first pipe piece 1 and the second pipe piece 2 is respectively filled with concrete 16, the first reinforcing steel bar 14 and the second reinforcing steel bar 15 are arranged between the concrete 16, the second reinforcing steel bar 15 is provided in multiple groups, the second reinforcing steel bar 15 is staggered, the front end of the inner part of the first pipe piece 1 and the second pipe piece 2 is provided with a groove 3, the inner side wall of the groove 3 is filled with a first sealing gasket 4, and the rear end of the first pipe piece 1 and the second pipe piece 2 is respectively fixedly connected with a clamping block 12.

[0030] Specifically, as shown in Figure 2 and Figure 4 , the anti-fouling layer 22 coated on the outer part of the first pipe piece 1 and the second pipe piece 2 is a Teflon coating, the Teflon coating has moisture resistance, the surface of the Teflon coating is not wet and oily, such as a small amount of dirt, which can be easily removed by simple wiping, and also has certain wear resistance, the first reinforcing steel bar 14 and the second reinforcing steel bar 15 inside the first pipe piece 1 and the second pipe piece 2 can increase the strength of the first pipe piece 1 and the second pipe piece 2, prevent the first pipe piece 1 and the second pipe piece 2 from bending or breaking during use, thereby increasing the service life of the first pipe piece 1 and the second pipe piece 2.

[0031] The left and right sides of the groove 3 are provided with positioning holes 7, the inner side wall of the positioning hole 7 is provided with a sealing sleeve 8, the left and right sides of the rear end of the clamping block 12 are fixedly connected with a positioning block 11, the positioning hole 7 is arranged on the left and right sides of the first pipe piece 1, the positioning block 11 is embedded in the inner part of the positioning hole 7, the clamping block 12 is embedded in the inner part of the groove 3, and the sealing sleeve 8 is arranged between the clamping block 12 and the groove 3;

[0032] Specifically, as shown in Figure 1 , Figure 2 and Figure 4 , when the rear end of the first pipe piece 1 needs to be spliced, the clamping block 12 of another group of first pipe pieces 1 is placed into the groove 3, and the positioning block 11 is embedded in the inner part of the positioning hole 7 during placement, so that the other group of first pipe pieces 1 can be positioned conveniently, the first pipe piece 1 is prevented from deviating during splicing, the first sealing gasket 4 and the sealing sleeve 8 can increase the sealing performance of the connection part and prevent water from entering the connection part.

[0033] Working principle: the utility model discloses when using the first pipe piece 1 and the second pipe piece 2 outside coating's antifouling layer 22 is Teflon coating, Teflon coating has the wet resistance, the surface of Teflon coating does not stick water and oil quality, if sticking a little dirt, simple wiping can remove, still has certain wear resistance, the first reinforcing steel bar 14 and the second reinforcing steel bar 15 in the first pipe piece 1 and the second pipe piece 2 inside can increase the strength of the first pipe piece 1 and the second pipe piece 2, prevent the first pipe piece 1 and the second pipe piece 2 from bending or breakage when using, can increase the service life of the first pipe piece 1 and the second pipe piece 2, need to make the first pipe piece 1 and the second pipe piece 2 splice together when pressing the limit board 10, make the limit board 10 extrude the limit spring 17 and then put the mounting block 9 to the inside of the installation groove 5, put after pushing the mounting block 9, the mounting block 9 drives the limit board 10 and the limit spring 17 move in the inside of the installation groove 5, when the limit board 10 moves to the appropriate position, the limit spring 17 will make the limit board 10 embed in the inside of the limit slot 13 through the elasticity of itself, thereby can lock the first pipe piece 1 and the second pipe piece 2, prevent the first pipe piece 1 and the second pipe piece 2 accidental separation, the limit sleeve 18 and the limit sleeve rod 19 in the limit spring 17 can improve the stability of the limit spring 17, need to splice the rear end of the first pipe piece 1 when putting another group of the first pipe piece 1's clamping block 12 to the inside of the recess 3, when placing make the positioning block 11 embed in the inside of the positioning hole 7, thereby can conveniently position another group of the first pipe piece 1, prevent the first pipe piece 1 from deviating when splicing, the first sealing gasket 4 and the sealing sleeve 8 can increase the sealing property of the connecting place, prevent the connecting place from entering water.

[0034] It is obvious to a person skilled in the art that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or essential characteristics of the utility model. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the utility model is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A self-locking shield tunnel segment comprising a first segment (1), characterized in that: The left side of the first pipe piece (1) is provided with a second pipe piece (2), and a limiting structure for facilitating splicing of the first pipe piece (1) and the second pipe piece (2) is arranged between the first pipe piece (1) and the second pipe piece (2). The limiting structure comprises a mounting groove (5), a mounting block (9) and a limiting plate (10), the left side of the first pipe piece (1) and the second pipe piece (2) is respectively fixedly connected with the mounting block (9), the right side of the inside of the first pipe piece (1) and the second pipe piece (2) is respectively provided with the mounting groove (5), the upper and lower ends of the inside of the mounting groove (5) is provided with a limiting groove (13), the upper and lower ends of the inside of the mounting block (9) is provided with a spring groove (20), the inside of the spring groove (20) is mounted with a limiting spring (17), the side close to the middle of the inside of the limiting spring (17) is provided with a limiting sleeve (18), the inside of the limiting sleeve (18) is provided with a limiting sleeve rod (19), and the side close to the outside of the limiting spring (17) is fixedly connected with the limiting plate (10).

2. The self-locking shield tunnel segment according to claim 1, wherein: The mounting block (9) on one side of the first pipe piece (1) is embedded in the mounting groove (5) in the inside of the second pipe piece (2), the limiting plate (10) is embedded in the inside of the limiting groove (13), and the inner side wall of the mounting groove (5) is provided with a second sealing gasket (6).

3. The self-locking shield tunnel segment according to claim 1, wherein: The limiting sleeve rod (19) slides in the inside of the limiting sleeve (18), and the limiting sleeve (18) and the limiting sleeve rod (19) are mounted between the limiting plate (10) and the mounting block (9).

4. The self-locking shield tunnel segment according to claim 1, wherein: The inside of the first pipe piece (1) and the second pipe piece (2) is respectively provided with a first reinforcing steel bar (14), the first reinforcing steel bars (14) are provided with a second reinforcing steel bar (15), the outside of the first pipe piece (1) and the second pipe piece (2) is coated with an anti-fouling layer (22), the top end of the first pipe piece (1) and the second pipe piece (2) is provided with a reserved groove (21), and the inside of the first pipe piece (1) and the second pipe piece (2) is respectively filled with concrete (16).

5. The self-locking shield tunnel segment according to claim 4, wherein: The first reinforcing steel bars (14) and the second reinforcing steel bars (15) are arranged between the concrete (16), the second reinforcing steel bars (15) are provided in multiple groups, and the second reinforcing steel bars (15) are arranged in a staggered manner.

6. The self-locking shield tunnel segment of claim 1, wherein: The front end of the inside of the first pipe piece (1) and the second pipe piece (2) is provided with a groove (3), the inner side wall of the groove (3) is filled with a first sealing gasket (4), and the rear end of the first pipe piece (1) and the second pipe piece (2) is respectively fixedly connected with a clamping block (12).

7. The self-locking shield tunnel segment according to claim 6, wherein: The left and right sides of the inside of the groove (3) is provided with a positioning hole (7), the inner side wall of the positioning hole (7) is provided with a sealing sleeve (8), the rear end of the clamping block (12) is fixedly connected with a positioning block (11), the positioning holes (7) are arranged on the left and right sides of the inside of the first pipe piece (1), and the positioning block (11) is embedded in the inside of the positioning hole (7).

8. The self-locking shield tunnel segment according to claim 7, wherein: The clamping block (12) is embedded in the inside of the groove (3), and the sealing sleeve (8) is arranged between the clamping block (12) and the groove (3).