Sealing structure for shield segment

Abstract

The utility model provides a sealing structure for a shield segment, and relates to the technical field of shield segments. The structure is characterized in that a structural joint is formed by a first shield segment and a second shield segment, a T-shaped groove is formed in the bottom of the structural joint, bayonet structures are arranged at the bottom of the structural joint and the top of the T-shaped groove, and the bayonet structures are used for sealing the structural joint; the waterproof structure is arranged in the middle of the structural joint, the two ends of the waterproof structure are connected with the side wall of the first shield segment and the side wall of the second shield segment correspondingly, a plurality of sealing structures are arranged at the bottom of the waterproof structure, and the sections of the sealing structures are in a barb shape. The side walls of the multiple sealing structures are connected with the side walls of the first shield segment and the second shield segment. The structure solves the problem of leakage in a shield segment interval caused by failure of a waterproof function in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of shield segments, and more specifically, to a sealing structure for shield segments. Background Art

[0002] In the current technical field of shield segments, the sealing method of shield segments generally uses rubber strips for sealing, and at the same time, sealant is used to seal small gaps between the water stop belt and the base material on the inner side of the shield segment end. However, in the actual application process, due to the deviation of the segment installation accuracy, the displacement of the rubber strip during installation, and the increase of the rubber material modulus over time, gaps often occur between the rubber strip and the segment. These gaps are prone to become channels for water leakage at the water-facing side, resulting in the failure of the waterproof function and the leakage problem in the shield segment section. Therefore, there is an urgent need for a sealing structure for shield segments to solve the leakage problem in the shield segment section caused by the failure of the waterproof function in the prior art. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a sealing structure for shield segments to improve the above problems. To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0004] A sealing structure for shield segments, comprising: the shield structure includes a first shield segment and a second shield segment, a structural joint is formed between the first shield segment and the second shield segment, a T-shaped groove is provided at the bottom of the structural joint, a bayonet structure is provided between the bottom of the structural joint and the top of the T-shaped groove, and the bayonet structure is used to seal the structural joint; the waterproof structure is arranged in the middle of the structural joint, both ends of the waterproof structure are respectively connected to the side walls of the first shield segment and the second shield segment, a plurality of sealing structures are provided at the bottom of the waterproof structure, the cross-sections of the plurality of sealing structures are all in an "inverted thorn" shape, and the side walls of the plurality of sealing structures are connected to the side walls of the first shield segment and the second shield segment.

[0005] Preferably, the waterproof structure includes a first clamping groove and a second clamping groove, the cross-sections of the first clamping groove and the second clamping groove are both wedge-shaped, one end of the first clamping groove is arranged on the side wall of the first shield segment, one end of the second clamping groove is arranged on the side wall of the second shield segment, and the bottom surface of the first clamping groove is connected to the top surface of the second clamping groove.

[0006] Preferably, the bayonet structure includes an elastic card and a buckle, one end of the elastic card is arranged on the bottom of the first shield segment, one end of the buckle is arranged on the bottom of the second shield segment, and the bottom surface of the elastic card contacts the top surface of the buckle.

[0007] Preferably, the elastic card is wedge-shaped, and the short side of the elastic card contacts the buckle.

[0008] Preferably, the structural joint includes a vertical joint and a reserved groove. The top end of the reserved groove is connected to the bottom end of the vertical joint, and the bottom end of the reserved groove is connected to the top end of the T-shaped groove.

[0009] Preferably, the multiple sealing structures include a first shear key and a second shear key. The first shear key is arranged at the bottom of the vertical joint, the second shear key is arranged in the middle of the reserved groove, and the end parts of the first shear key and the second shear key are respectively connected to the side walls of the first shield segment and the second shield segment.

[0010] Preferably, the reserved groove is elliptical.

[0011] Preferably, a sealing rod is arranged in the reserved groove, and the sealing rod is used to fill the structural joint.

[0012] Preferably, a sealing gasket is arranged in the T-shaped groove, and fixing layers are arranged in the T-shaped groove, the vertical joint and the reserved groove. The fixing layers are used to fix the sealing gasket and the sealing rod.

[0013] Preferably, the diameter of the sealing rod is larger than the diameter of the reserved groove.

[0014] The beneficial effects of this structure are:

[0015] The utility model introduces a bayonet structure, a waterproof structure and a sealing structure. The bayonet structure is arranged at the connection of the T-shaped groove and the structural joint, and the bayonet structure is used to prevent the waterproof filler from leaking out. The waterproof structure is arranged in the middle of the structural joint, and the waterproof structure increases the bonding area and the structural force, and is used to protect the structural joint secondly. The sealing structure is arranged between the bayonet structure and the waterproof structure, and the sealing structure is used to increase the contact area between the sealing rod and the shield segment, so that the sealing effect of the structural joint is better. The common setting of the bayonet structure, the waterproof structure and the sealing structure solves the problem of leakage in the shield segment interval caused by the failure of the waterproof function in the prior art.

[0016] Other features and advantages of the utility model will be described in the subsequent specification, and some of them will be obvious from the specification, or can be understood by implementing the embodiments of the utility model. The objectives and other advantages of the utility model can be realized and obtained by the structures specifically pointed out in the written specification, claims and drawings. Description of the Drawings

[0017] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the accompanying drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following accompanying drawings only show certain embodiments of the present utility model and should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other relevant accompanying drawings can also be obtained based on these drawings.

[0018] Figure 1 is the overall structural schematic diagram of the present utility model;

[0019] Figure 2 is based on Figure 1 the enlarged structural schematic diagram of area A;

[0020] Markings in the figure:

[0021] 1, the first shield segment; 2, the second shield segment; 3, the structural joint; 4, the T-shaped groove; 5, the bayonet structure; 6, the waterproof structure; 7, the sealing structure; 8, the sealing rod; 31, the vertical joint; 32, the reserved groove; 51, the elastic card; 52, the buckle; 61, the first card slot; 62, the second card slot; 71, the first shear tenon; 72, the second shear tenon. Specific embodiments

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Generally, the components of the embodiments of the present utility model described and shown in the accompanying drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents the selected embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0023] It should be noted that: similar reference numerals and letters indicate similar items in the following accompanying drawings. Therefore, once an item is defined in one accompanying drawing, it does not need to be further defined and explained in subsequent accompanying drawings. At the same time, in the description of the present utility model, terms such as "first" and "second" are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0024] Such as Figure 1 and Figure 2As shown in the figure, a sealing structure for shield segments includes: The shield structure includes a first shield segment 1 and a second shield segment 2. A structural joint 3 is formed between the first shield segment 1 and the second shield segment 2. A T-shaped groove 4 is provided at the bottom of the structural joint 3. A bayonet structure 5 is provided at the bottom of the structural joint 3 and the top of the T-shaped groove 4. The bayonet structure 5 is used to seal the structural joint 3. The waterproof structure 6 is provided in the middle of the structural joint 3. The two ends of the waterproof structure 6 are respectively connected to the side walls of the first shield segment 1 and the second shield segment 2. A plurality of sealing structures 7 are provided at the bottom of the waterproof structure 6. The cross-sections of the plurality of sealing structures 7 are all in the shape of "barbs". The side walls of the plurality of sealing structures 7 are connected to the side walls of the first shield segment 1 and the second shield segment 2. The technical effects of this structure are as follows: The T-shaped groove 4 and the bayonet structure 5 form a bayonet that only allows entry but not exit. The bayonet structure 5 is used to prevent the leakage of waterproof filler. The waterproof structure 6 improves the waterproof safety of the structural joint 3 from two aspects: bonding area and structural stress. When the waterproof filler in the structural joint 3 is damaged, the waterproof structure 6 provides secondary protection for the structural joint 3. The plurality of sealing structures 7 are used to increase the contact area between the sealing rod 8 and the first shield segment 1 and the second shield segment 2, improving the sealing effect of the structural joint 3. The bayonet structure 5, the waterproof structure 6 and the plurality of sealing structures 7 are all used to ensure that the sealing rod 8 is filled densely. This structure solves the problem of leakage in the shield segment section caused by the failure of the waterproof function in the prior art.

[0025] In this structure, the waterproof structure 6 includes a first slot 61 and a second slot 62. The cross-sections of the first slot 61 and the second slot 62 are both wedge-shaped. One end of the first slot 61 is provided on the side wall of the first shield segment 1. One end of the second slot 62 is provided on the side wall of the second shield segment 2. The bottom surface of the first slot 61 is connected to the top surface of the second slot 62. The first slot 61 and the second slot 62 both improve the waterproof safety of the structural joint 3 from two aspects: bonding area and structural stress. The first slot 61 and the second slot 62 are jointly provided to ensure that the waterproof filler above the structural joint 3 does not flow out and the sealing rod 8 is filled densely.

[0026] To clarify the mating structure of the bayonet structure 5, the bayonet structure 5 includes an elastic card 51 and a buckle 52. One end of the elastic card 51 is arranged on the bottom of the first shield segment 1, and one end of the buckle 52 is arranged on the bottom of the second shield segment 2. The bottom surface of the elastic card 51 contacts the top surface of the buckle 52. The elastic card 51 and the buckle 52 are spliced and assembled to form a bayonet that only allows entry but not exit. The elastic card 51 and the buckle 52 are jointly arranged to ensure that the waterproof filler above the structural joint 3 does not flow out and the sealing rod 8 is filled tightly. Preferably, the elastic card 51 is made of a polymer flexible sealing material.

[0027] Further, the elastic card 51 is wedge-shaped, and the short side of the elastic card 51 contacts the buckle 52.

[0028] To clarify the structure of the structural joint 3, the structural joint 3 includes a vertical joint 31 and a reserved groove 32. The top end of the reserved groove 32 is connected to the bottom end of the vertical joint 31, and the bottom end of the reserved groove 32 is connected to the top end of the T-shaped groove 4.

[0029] In the present utility model, a plurality of the sealing structures 7 include a first shear key 71 and a second shear key 72. The first shear key 71 is arranged at the bottom of the vertical joint 31, and the second shear key 72 is arranged in the middle of the reserved groove 32. The end parts of the first shear key 71 and the second shear key 72 are respectively connected to the side walls of the first shield segment 1 and the second shield segment 2. One end of each of the first shear key 71 and the second shear key 72 extends towards the inside of the first shield segment 1 and the second shield segment 2. By increasing the contact area between the sealing rod 8 and the first shield segment 1 and the second shield segment 2, the sealing effect of the reserved groove 32 is improved.

[0030] To clarify the specific structure of the reserved groove 32, the reserved groove 32 is elliptical. Further, the reserved groove 32 is arc-shaped.

[0031] In the present utility model, a sealing rod 8 is arranged in the reserved groove 32, and the sealing rod 8 is used to fill the structural joint 3. The sealing rod 8 is extruded and deformed to form an outward elastic force and is filled into the reserved groove 32 through a pressure-sensitive bonding technique. Preferably, the sealing rod 8 is made of an extruded high-flexibility sealing material.

[0032] A gasket is provided inside the T-shaped groove 4. Fixing layers are provided inside the T-shaped groove 4, the vertical seam 31, and the reserved groove 32. The fixing layers are used to fix the gasket and the sealing rod 8. In this structure, the width of the gasket is greater than the width of the T-shaped groove 4, so that it can be fixed more effectively. The gasket has stronger stretching ability and settlement ability, and can effectively resist water pressure. Preferably, the gasket is made of a high molecular flexible sealing material, and the fixing layer is an adhesive interface agent.

[0033] Furthermore, the diameter of the sealing rod 8 is greater than the diameter of the reserved groove 32.

[0034] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, various modifications and changes can be made to the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

[0035] As described above, this is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or replacements, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A sealing structure for a shield segment, characterized in that Comprising: A shield structure, the shield structure includes a first shield segment (1) and a second shield segment (2), a structural joint (3) is formed between the first shield segment (1) and the second shield segment (2), a T-shaped groove (4) is provided at the bottom of the structural joint (3), a bayonet structure (5) is provided between the bottom of the structural joint (3) and the top of the T-shaped groove (4), and the bayonet structure (5) is used to seal the structural joint (3); A waterproof structure (6), the waterproof structure (6) is arranged in the middle of the structural joint (3), both ends of the waterproof structure (6) are respectively connected to the side walls of the first shield segment (1) and the second shield segment (2), a plurality of sealing structures (7) are provided at the bottom of the waterproof structure (6), the cross-sections of the plurality of sealing structures (7) are all in an "inverted thorn" shape, and the side walls of the plurality of sealing structures (7) are connected to the side walls of the first shield segment (1) and the second shield segment (2).

2. The sealing structure for a shield segment according to claim 1, characterized in that The waterproof structure (6) includes a first clamping groove (61) and a second clamping groove (62), the cross-sections of the first clamping groove (61) and the second clamping groove (62) are both wedge-shaped, one end of the first clamping groove (61) is arranged on the side wall of the first shield segment (1), one end of the second clamping groove (62) is arranged on the side wall of the second shield segment (2), and the bottom surface of the first clamping groove (61) is connected to the top surface of the second clamping groove (62).

3. The sealing structure for shield segments according to claim 1, characterized in that, The bayonet structure (5) includes an elastic card (51) and a buckle (52), one end of the elastic card (51) is arranged on the bottom of the first shield segment (1), one end of the buckle (52) is arranged on the bottom of the second shield segment (2), and the bottom surface of the elastic card (51) contacts the top surface of the buckle (52).

4. The sealing structure for a shield segment according to claim 3, characterized in that, The elastic card (51) is wedge-shaped, and the short side of the elastic card (51) contacts the buckle (52).

5. The sealing structure for a shield segment according to claim 1, wherein The structural joint (3) includes a vertical joint (31) and a reserved groove (32), the top end of the reserved groove (32) is connected to the bottom end of the vertical joint (31), and the bottom end of the reserved groove (32) is connected to the top end of the T-shaped groove (4).

6. The sealing structure for a shield segment according to claim 5, characterized in that, The plurality of sealing structures (7) includes a first shear key (71) and a second shear key (72), the first shear key (71) is arranged at the bottom of the vertical joint (31), the second shear key (72) is arranged in the middle of the reserved groove (32), and the end parts of the first shear key (71) and the second shear key (72) are respectively connected to the side walls of the first shield segment (1) and the second shield segment (2).

7. The sealing structure for a shield segment according to claim 5, characterized in that, The reserved groove (32) is elliptical.

8. The sealing structure for a shield segment according to claim 5, wherein A sealing rod (8) is arranged in the reserved groove (32), and the sealing rod (8) is used to fill the structural joint (3).

9. The sealing structure for shield segments according to claim 8, wherein, A sealing gasket is arranged in the T-shaped groove (4), and fixing layers are arranged in the T-shaped groove (4), the vertical joint (31) and the reserved groove (32), and the fixing layers are used to fix the sealing gasket and the sealing rod (8).

10. The sealing structure for a shield segment according to claim 8, characterized in that, The diameter of the sealing rod (8) is greater than the diameter of the reserved groove (32).

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