Novel high-toughness shield rubber sealing gasket

Abstract

The utility model relates to the field of rubber sealing gaskets, and discloses a novel high-toughness shield rubber sealing gasket which comprises a high-toughness sealing gasket body, arc-shaped protrusions are fixedly installed on the top face and the bottom face of the high-toughness sealing gasket body correspondingly, and a connecting water baffle is fixedly installed on the rear side of the high-toughness sealing gasket body. A round water blocking head is fixedly installed at the end, away from the high-toughness sealing gasket, of the connecting water blocking plate, and through the arrangement of the connecting water blocking plate, the round water blocking head and the water swelling coating, the sealing effect of the connecting position of the high-toughness sealing gasket and the pipe piece is conveniently improved so that soil or water or other substances can be prevented from entering a tunnel; the high-toughness sealing gaskets are made of chloroprene rubber, limestone, fibers and the like in a combined mode, so that the waterproof effect is further improved, the high-toughness sealing gaskets are made of chloroprene rubber, limestone, fibers and the like, the high-toughness sealing gaskets have high abrasion resistance and tear resistance, and the waterproof sealing effect can be effectively achieved through the arranged water swelling coatings.

Description

Technical Field

[0001] This application belongs to the technical field of rubber gaskets, and specifically relates to a new type of high-toughness shield rubber gasket. Background Art

[0002] The shield rubber gasket is an important component used in the shield construction process. It is usually used for sealing between the front shield shell of the shield machine and the segment to prevent soil, water or other substances from entering the tunnel. The shield rubber gasket is usually formed by fitting two gaskets. The two gaskets are respectively installed at the interface positions of adjacent precast concrete segments, and then connected by fitting. When the shield machine advances and installs segments, a gasket is installed at the joint of each segment, and then the adjacent two gaskets are fitted to ensure the sealing performance of the segment joint and thus ensure the sealing and stability of the tunnel structure.

[0003] For example, the utility model patent with the publication number CN212803269U discloses a water-proof elastic gasket for the joint of a drainage shield tunnel segment. The elastic gasket body is symmetric along the center line. Its outer contour consists of a straight upper end face, a lower end face parallel to the upper end face, and left and right side faces respectively connecting the two ends of the upper and lower end faces. A regular arch-shaped through hole and two symmetrically arranged inverted arch-shaped through holes are respectively opened in the upper part of the elastic gasket body. A first type of inverted U-shaped groove and two symmetrically arranged second type of inverted U-shaped grooves are respectively opened in the lower part of the elastic gasket body. Two support feet are formed between the second type of inverted U-shaped groove and the regular arch-shaped through hole respectively, and two end parts are formed between the second type of inverted U-shaped groove and the left and right side contour faces respectively. Compared with the prior art, the utility model has the advantages of optimized structure, good durability, small assembly force, high waterproof performance, and convenient manufacturing.

[0004] However, it is found in the actual use process that: the triangular end parts provided on the side of the gasket body of the device ensure the stability and waterproof performance of the gasket, but the triangular end parts cannot well improve the waterproof effect at the joint between the side of the gasket body and the segment. Therefore, a new type of high-toughness shield rubber gasket is provided. Summary of the Utility Model

[0005] The purpose of this application is to provide a new type of high-toughness shield rubber gasket to solve the above-mentioned problems.

[0006] The technical solution adopted in this application is as follows: A new type of high-toughness shield rubber gasket, including a high-toughness gasket, arc-shaped protrusions are fixedly installed on the top surface and the bottom surface of the high-toughness gasket respectively, a connecting water baffle is fixedly installed at the rear side of the high-toughness gasket, a circular water baffle head is fixedly installed at one end of the connecting water baffle away from the high-toughness gasket, a water-swellable coating is fixedly installed on the top surface of the arc-shaped protrusion, and a sealing assembly is arranged at the front end of the high-toughness gasket.

[0007] In a preferred embodiment, the sealing assembly includes a rubber plate and a convex block. The rubber plate is fixedly installed at the front end of the high-toughness gasket, and the convex block is fixedly installed near the side at the front end of the rubber plate.

[0008] In a preferred embodiment, four circular pressure relief holes I are opened inside the high-toughness gasket.

[0009] In a preferred embodiment, three arch through holes are opened inside the high-toughness gasket.

[0010] In a preferred embodiment, six circular pressure relief holes II are opened at the side of the circular pressure relief hole I inside the high-toughness gasket, and the inner diameters of the six circular pressure relief holes II are all smaller than that of the circular pressure relief hole I.

[0011] In a preferred embodiment, rubber strips are fixedly installed on the top surface and the bottom surface of the rubber plate. In summary, due to the adoption of the above technical solution, the beneficial effects of this application are as follows:

[0012] 1. In this application, due to the adoption of the above solution, by setting the connecting water baffle, circular water baffle head and water-swellable coating, it is convenient to improve the sealing effect at the connection between the high-toughness gasket and the segment, so as to prevent soil, water or other substances from entering the tunnel. By setting the rubber plate and convex block, it is convenient for two high-toughness gaskets to be in close contact when they are fitted, thereby further improving the waterproof effect. The high-toughness gasket of this device is made of a combination of neoprene, limestone and fibers, etc., making it have high wear resistance and tear resistance, and through the set water-swellable coating, it can effectively achieve the effect of waterproof sealing. Brief Description of the Drawings

[0013] Figure 1 It is a schematic diagram of the overall structure of this application;

[0014] Figure 2 It is a schematic diagram of the structure of the connecting water baffle of this application;

[0015] Figure 3 It is a schematic diagram of the structure without the rubber plate installed in this application.

[0016] Markings in the figure: 1. High-toughness gasket; 2. Arc-shaped protrusion; 3. Connecting water baffle; 4. Circular water stop head; 5. Water-swellable coating; 6. Sealing assembly; 7. Rubber plate; 8. Bump; 9. Circular decompression hole 1; 10. Arch through-hole; 11. Circular decompression hole 2; 12. Rubber strip. Detailed implementation mode

[0017] To make the objectives, technical solutions and advantages of the embodiments of this application clearer, the following will, in combination with the embodiments of this application, clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, rather than all of them. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0018] Reference Figure 1 、 Figure 2 And Figure 3 Referring to

[0019] Reference Figure 1 、 Figure 2 A novel high-toughness shield rubber gasket, including a high-toughness gasket 1, with arc-shaped protrusions 2 fixedly installed on the top and bottom surfaces of the high-toughness gasket 1 respectively; the high-toughness gasket 1 is made by combining chloroprene rubber (CR), limestone and fibers, etc. Chloroprene rubber (CR) has good elasticity and anti-aging performance, and can withstand high strain and deformation, while fillers such as limestone and fibers can increase the strength and hardness of the rubber, improving its wear resistance and tear resistance.

[0020] Reference Figure 1 、 Figure 2 And Figure 3, the sealing assembly 6 includes a rubber plate 7 and bumps 8. The front end of the high-toughness gasket 1 is fixedly installed with a rubber plate 7. Rubber strip 12 is fixedly installed on the top and bottom surfaces of the rubber plate 7 respectively. The bumps 8 are fixedly installed near the side of the front end of the rubber plate 7. By providing the rubber plate 7 and the bumps 8, it is convenient for the two high-toughness gaskets 1 to be in close contact when they are attached, thereby further improving the waterproof effect. The two bumps 8 are installed in a staggered manner. By providing the strip 12, it can play a certain blocking effect on soil or water.

[0021] Reference Figure 1 , four circular decompression holes 9 are provided inside the high-toughness gasket 1, three arch through holes 10 are provided inside the high-toughness gasket 1, and six circular decompression holes 11 are provided on the side of the circular decompression hole 9 inside the high-toughness gasket 1, and the inner diameters of the six circular decompression holes 11 are all smaller than those of the circular decompression hole 9. By providing the circular decompression hole 9, the arch through hole 10 and the circular decompression hole 11, it is convenient to provide better deformation ability and adaptability during shield construction. When the shield machine advances and excavates the tunnel, the pressure of the underground soil and the pushing force of the shield machine will cause the deformation and stress concentration of the tunnel. By providing holes in the high-toughness gasket 1, the stress borne by the gasket can be reduced, and the effects of relieving stress concentration, providing deformation space and improving sealing performance can be achieved.

[0022] The implementation principle of the embodiment of the new high-toughness shield rubber gasket of this application is: by providing the connecting water baffle 3, the circular water head 4 and the water-swellable coating 5, it is convenient to improve the sealing effect at the connection between the high-toughness gasket 1 and the segment to prevent soil, water or other substances from entering the tunnel. The water-swellable coating 5 is composed of a base material, a water-swellable agent and a binder. When it contacts water, it can expand, thereby improving the sealing and waterproof effect on the side of the gasket 1. By providing the rubber plate 7 and the bumps 8, it is convenient for the two high-toughness gaskets 1 to be in close contact when they are attached, thereby further improving the waterproof effect. The device has a simple structure and is easy to operate. The high-toughness gasket 1 is made of a combination of chloroprene rubber, limestone and fibers, making it have high wear resistance and tear resistance. By providing the water-swellable coating 5, it can effectively achieve the effect of waterproof sealing.

[0023] The above embodiments are only used to illustrate the technical solutions of this application, rather than to limit them; although the technical solutions of this application have been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A novel high-toughness shield rubber sealing pad, comprising a high-toughness sealing pad (1), characterized in that: The top and bottom surfaces of the high-toughness sealing pad (1) are respectively fixedly mounted with arc-shaped protrusions (2); a connecting water baffle (3) is fixedly mounted on the rear side of the high-toughness sealing pad (1); a circular water baffle (4) is fixedly mounted on one end of the connecting water baffle (3) away from the high-toughness sealing pad (1); a water-swellable coating (5) is fixedly mounted on the top surface of the arc-shaped protrusion (2); and a sealing assembly (6) is provided at the front end of the high-toughness sealing pad (1).

2. A novel high-toughness shield rubber sealing pad as claimed in claim 1, characterized in that: The sealing assembly (6) comprises a rubber plate (7) and a protrusion (8); the rubber plate (7) is fixedly mounted on the front end of the high-toughness sealing pad (1); and the protrusion (8) is fixedly mounted on the front end of the rubber plate (7) near the side.

3. A novel high-toughness shield rubber sealing pad as claimed in claim 1, characterized in that: Four circular pressure reducing holes (9) are provided inside the high-toughness sealing pad (1).

4. A novel high-toughness shield rubber sealing pad as claimed in claim 1, characterized in that: Three arch through holes (10) are provided inside the high-toughness sealing pad (1).

5. A novel high-toughness shield rubber sealing pad as claimed in claim 1, characterized in that: The high-toughness sealing gasket (1) is provided with six circular pressure-reducing holes (11) on the sides of the circular pressure-reducing hole (9), and the inner diameters of the six circular pressure-reducing holes (11) are all smaller than the circular pressure-reducing hole (9).

6. A novel high-toughness shield rubber sealing pad as claimed in claim 2, characterized in that: Rubber stop strips (12) are fixedly mounted on the top surface and the bottom surface of the rubber plate (7).

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