A temporary waterproofing device for tunnel portal of a tunnel boring machine

Abstract

This utility model provides a temporary waterproofing device for tunnel boring machine (TBM) portals, relating to the field of TBMs. The device includes a steel ring plate, a sealing plate on one side of the ring plate, an airbag fixedly connected to the inner side of the sealing plate, a fixing ring on one side of the ring plate, multiple support plates on the side of the fixing ring, and fixing plates on the side of the support plates. First fixing cylinders are fixedly connected to both sides of the end of the fixing plate furthest from the support plates, and a second fixing cylinder is located between two of the first fixing cylinders. This utility model increases the cross-sectional area with the TBM during use and provides a secondary dynamic seal, solving the problem that when a water-stopping device is in contact with the TBM, it only relies on the movement of the plates to compress the fabric, lacking a multi-structure collaborative dynamic sealing solution, making it difficult to meet the waterproofing requirements under complex working conditions.

Description

Technical Field

[0001] This utility model relates to the field of tunnel boring machines, specifically a temporary waterproofing device for tunnel portals of tunnel boring machines. Background Technology

[0002] With the continuous development and expansion of urban underground railways, shield tunneling has become the mainstream technology for urban subway construction. At the same time, the high risk and difficulty of shield tunneling have become a focus of the industry and a subject that many industry elites are constantly researching. During shield tunnel construction, the initial launch of the shield carries extremely high risks, and waterproofing the tunnel portal plays a crucial role in controlling ground settlement, portal collapse, and water and sand leakage at the portal.

[0003] A search revealed an existing patent (publication number: 202323550225.8) that discloses a waterproofing device for tunnel boring machines (TBMs). This device includes a pre-set box with embedded anchor bars. Externally, the pre-set box is fixedly connected to a fabric rubber sheet, a circular ring plate, and a fixing plate. While this patented technology achieves a tight seal between the waterproofing device and the TBM, eliminating the risk of sand or water inrush at the tunnel entrance, it relies solely on the movement of the plates to compress the fabric when the device is in contact with the TBM. This lack of a multi-structure collaborative dynamic sealing solution makes it difficult to meet the waterproofing requirements under complex working conditions.

[0004] Therefore, those skilled in the art have provided a temporary waterproofing device for the tunnel portal of a tunnel boring machine to solve the problems mentioned in the background art. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this application provides a temporary waterproofing device for tunnel portals of tunnel boring machines. This device solves the problem that when the water-stopping device is attached to the tunnel boring machine, it only relies on the flipping of the plate to squeeze the curtain, lacking a dynamic sealing solution with multi-structure coordination, which makes it difficult to meet the waterproofing requirements under complex working conditions.

[0007] 2. Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A temporary waterproofing device for a tunnel boring machine portal includes a steel ring plate. A sealing plate is provided on one side of the steel ring plate, and an airbag is fixedly connected to the inner side of the sealing plate. A fixing ring is provided on one side of the steel ring plate, and multiple support plates are provided on the side of the fixing ring. A fixing plate is provided on the side of the support plate. A first fixing cylinder is fixedly connected to both sides of the end of the fixing plate away from the support plate. A second fixing cylinder is provided between the two first fixing cylinders. A flap is fixedly connected to the side of the second fixing cylinder away from the fixing plate. A positioning pin is provided inside the first fixing cylinder and the inside of the second fixing cylinder.

[0010] The above technical solution increases the cross-sectional area of ​​the shield machine during use and provides a secondary dynamic seal for the shield machine. This solves the problem that when the water-stopping device is in contact with the shield machine, it only relies on the flipping of the plate to squeeze the curtain, lacking a multi-structure collaborative dynamic sealing solution, which makes it difficult to meet the waterproofing requirements under complex working conditions.

[0011] Furthermore, the interior of the steel ring plate includes multiple arc-shaped plates, which are assembled together to form the steel ring plate;

[0012] The above technical solution allows for the assembly of the entire device during installation, which reduces both the difficulty of installation and transportation, and also facilitates the disassembly and replacement of individual parts if problems arise later.

[0013] Furthermore, positioning grooves are provided at both ends of one side of the arc plate, and positioning plates are provided inside the two adjacent positioning grooves. Threaded holes are provided inside the positioning plates and inside the arc plate, and positioning bolts are threadedly connected to them.

[0014] Through the above technical solution, the positioning plate and positioning groove can limit the arc plate, increase the connection between the arc plates, and limit their movement.

[0015] Furthermore, the sealing plate has a wavy cross-section and is made of cross-threaded cord fabric and nitrile rubber composite material pressed into sections;

[0016] The above technical solution increases the sealing contact area through waveform design, thereby enhancing the waterproof effect of the device.

[0017] Furthermore, the airbag is equipped with an external inflation tube inside, and a pressure sensor is also installed inside the airbag.

[0018] Through the above technical solutions, the airbag dynamically compensates for gaps, adapts to the outer shell of the tunnel boring machine, and the air pressure sensor allows staff to adjust the air pressure inside the airbag in a timely manner.

[0019] Furthermore, the fixed ring is L-shaped, the sealing plate is located inside the fixed ring, and threaded holes are provided inside the fixed ring, inside the sealing plate, and inside the steel ring plate, and fixed bolts are threadedly connected to them. The fixed ring is fixedly connected to the steel ring plate and the sealing plate through the fixed bolts and threaded holes.

[0020] Through the above technical solution, the fixing ring can perform secondary fixing and limiting of the arc plate, and increase the connection and fixation between the sealing plate and the steel ring plate.

[0021] Furthermore, the support plate is arc-shaped, and there are several fixing plates, which are evenly arranged on the side of the support plate.

[0022] The above technical solution facilitates the disassembly of the fixing plate. When not in use, only the support plate needs to be removed, eliminating the need to spend a lot of time disassembling multiple fixing plates one by one.

[0023] Furthermore, both the interior of the support plate and the interior of the fixing ring are provided with threaded holes and threaded with first bolts. The support plate is fixedly connected to the fixing ring through the threaded holes and the first bolts. Both the interior of the fixing plate and the interior of the support plate are provided with threaded holes and threaded with second bolts. The fixing plate is fixedly connected to the support plate through the second bolts and the threaded holes.

[0024] Through the above technical solution, the flap can squeeze the sealing plate, making the sealing plate fit tightly against the tunnel boring machine.

[0025] 3. Beneficial effects

[0026] This utility model provides a temporary waterproofing device for the tunnel portal of a tunnel boring machine. It has the following beneficial effects:

[0027] 1. This utility model provides a temporary waterproofing device for tunnel portals of shield machines. By setting up a sealing plate, airbag, fixing plate, first fixing cylinder, second fixing cylinder, flip plate and positioning pin, the device can increase the cross-sectional area with the shield machine during use and perform secondary dynamic sealing on the shield machine. This solves the problem that when the water-stopping device is in contact with the shield machine, it only squeezes the curtain by flipping the plate, lacks a multi-structure collaborative dynamic sealing solution, and is difficult to adapt to the waterproofing requirements under complex working conditions.

[0028] 2. This utility model provides a temporary waterproofing device for tunnel portals of shield machines. By setting up an arc-shaped plate, positioning groove, positioning plate, fixing ring and support plate, the device can make the sealing plate and steel ring plate fit tightly during use. The entire device can be spliced ​​and installed during installation, which reduces the difficulty of installation and transportation, and also facilitates the disassembly and replacement of individual parts if problems occur in a certain part later. Attached Figure Description

[0029] Figure 1 This is an axial view schematic diagram of the present invention;

[0030] Figure 2 This is a front view schematic diagram of the present utility model;

[0031] Figure 3 For the present utility model Figure 1 A magnified view of point A;

[0032] Figure 4 This is a schematic axial sectional view of the present invention;

[0033] Figure 5 This is a side-axis view of the present invention.

[0034] In the picture:

[0035] 1. Steel ring plate; 2. Arc plate; 3. Positioning groove; 4. Positioning plate; 5. Positioning bolt; 6. Sealing plate; 7. Airbag; 8. Fixing ring; 9. Fixing bolt; 10. Support plate; 11. First bolt; 12. Fixing plate; 13. Second bolt; 14. First fixing cylinder; 15. Second fixing cylinder; 16. Flip plate; 17. Positioning pin. Detailed Implementation

[0036] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments. Obviously, the described specific embodiments are only a part of the specific embodiments of the present invention, and not all of them. Based on the specific embodiments of the present invention, all other specific embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Specific implementation method 1:

[0038] Please see Figure 1 , Figure 2 , Figure 3This embodiment of a temporary waterproofing device for a tunnel boring machine portal includes a steel ring plate 1. A sealing plate 6 is provided on one side of the steel ring plate 1, and an airbag 7 is fixedly connected to the inner side of the sealing plate 6. A fixing ring 8 is provided on one side of the steel ring plate 1, and multiple support plates 10 are provided on the side of the fixing ring 8. A fixing plate 12 is provided on the side of the support plate 10. First fixing cylinders 14 are fixedly connected to both sides of the end of the fixing plate 12 away from the support plate 10. A second fixing cylinder 15 is provided between the two first fixing cylinders 14. A flap 16 is fixedly connected to the side of the second fixing cylinder 15 away from the fixing plate 12. The interiors of the first fixing cylinders 14 and the second fixing cylinder 15 are also connected. A common positioning pin 17 is provided. The sealing plate 6 has a wavy cross section. The sealing plate 6 is made of cross-threaded cord fabric and nitrile rubber composite material in sections. An external inflation pipe is provided inside the airbag 7. A pressure sensor is provided inside the airbag 7. Threaded holes are opened inside the support plate 10 and the fixing ring 8 and threadedly connected to the first bolt 11. The support plate 10 is fixedly connected to the fixing ring 8 through the threaded holes and the first bolt 11. Threaded holes are opened inside the fixing plate 12 and the support plate 10 and threadedly connected to the second bolt 13. The fixing plate 12 is fixedly connected to the support plate 10 through the second bolt 13 and the threaded holes. Specific implementation method 2:

[0040] Please see Figure 4 , Figure 5 In this embodiment, a temporary waterproofing device for a tunnel boring machine portal is provided. The steel ring plate 1 contains multiple arc-shaped plates 2, which are assembled together to form the steel ring plate 1. Positioning grooves 3 are provided at both ends of one side of the arc-shaped plates 2. Positioning plates 4 are provided inside two adjacent positioning grooves 3. Threaded holes are provided inside the positioning plates 4 and the arc-shaped plates 2, and positioning bolts 5 are threadedly connected to them. The fixed ring 8 is L-shaped. The sealing plate 6 is located inside the fixed ring 8. Threaded holes are provided inside the fixed ring 8, the sealing plate 6, and the steel ring plate 1, and fixing bolts 9 are threadedly connected to them. The fixed ring 8 is fixedly connected to the steel ring plate 1 and the sealing plate 6 through the fixing bolts 9 and the threaded holes. The support plate 10 is arc-shaped. There are several fixing plates 12, which are evenly arrayed on the side of the support plate 10.

[0041] This embodiment describes a temporary waterproofing device for a tunnel boring machine (TBM) portal. It should be noted that the arrangement of the sealing plate 6, airbag 7, fixing plate 12, first fixing cylinder 14, second fixing cylinder 15, flip plate 16, and positioning pin 17 increases the cross-sectional area with the TBM during use, providing a secondary dynamic seal. This solves the problem that when a water-stopping device is attached to the TBM, it only relies on the flipping of the plate to compress the curtain, lacking a multi-structure collaborative dynamic sealing solution, making it difficult to meet the waterproofing requirements under complex working conditions. The arrangement of the arc-shaped plate 2, positioning groove 3, positioning plate 4, fixing ring 8, and support plate 10 ensures that the sealing plate 6 and steel ring plate 1 are tightly fitted during use. The entire device can be spliced ​​together during installation, reducing installation and transportation difficulties and facilitating the disassembly and replacement of individual parts if problems arise later.

[0042] The working principle of the above embodiment is as follows: In use, two arc-shaped plates 2 are spliced ​​together. After splicing, the positioning plate 4 is placed inside the internal positioning groove 3 of the two arc-shaped plates 2 to initially limit the two arc-shaped plates 2. After limiting, the positioning plate 4 is fixedly connected to the arc-shaped plates 2 by the positioning bolt 5, thereby completing the initial fixation of the two arc-shaped plates 2. The four arc-shaped plates 2 are spliced ​​together to form a steel ring plate 1. Then, the steel ring plate 1 is installed. After installation, the sealing plate 6 is attached to the steel ring plate 1, and then the fixing ring 8 is installed so that the sealing plate 6 enters the interior of the fixing ring 8. The fixing ring 8 compresses the sealing plate 6. Then, the fixing ring 8 is fixed to the steel ring plate 1 by the fixing bolt 9. After fixing, the fixing bolt 9 also connects and fixes the fixing ring 8 to the sealing plate 6. At this time, the fixing ring 8 performs a secondary connection and fixation of the arc-shaped plates 2. Then, the support plate 10 is placed on the side of the fixing ring 8. The support plate 10 is fixed to the fixing ring 8 by the first bolt 11. At this time, the fixing plate 12 is located on the side of the support plate 10 and is rotatably connected to the flap 16 by the positioning pin 17, the first fixing cylinder 14 and the second fixing cylinder 15. Then, only one support plate 10 needs to be fixed to fix multiple flaps 16. When a problem occurs in a certain part, the support plate 10 or the fixing plate 12 can be removed individually. When the device is in use, the tunnel boring machine contacts the flap 16, and the flap 16 rotates to push the sealing plate 6. Since the sealing plate 6 is wave-shaped, it begins to fit tightly under the pressure of the flap 16. At this time, the airbag 7 begins to inflate by the external air pump. After inflation, the airbag 7 expands and begins to dynamically seal the tunnel boring machine. During sealing, the air pressure sensor inside the airbag 7 constantly detects the air pressure inside the airbag 7, thereby controlling the air pressure inside the airbag 7 by the external air pump to enhance the sealing effect of the airbag 7.

[0043] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0044] Although specific embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these specific embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A shield machine portal temporary waterproofing device, comprising a steel ring plate (1), characterized in that: A sealing plate (6) is provided on one side of the steel ring plate (1), and an airbag (7) is fixedly connected to the inner side of the sealing plate (6). A fixing ring (8) is provided on one side of the steel ring plate (1), and multiple support plates (10) are provided on the side of the fixing ring (8). A fixing plate (12) is provided on the side of the support plate (10). A first fixing cylinder (14) is fixedly connected to both sides of the end of the fixing plate (12) away from the support plate (10). A second fixing cylinder (15) is provided between the two first fixing cylinders (14). A flap (16) is fixedly connected to the side of the second fixing cylinder (15) away from the fixing plate (12). A positioning pin (17) is provided inside the first fixing cylinder (14) and the second fixing cylinder (15). The sealing plate (6) has a wavy cross section and is made of cross-thread cord fabric and nitrile rubber composite material pressed into sections. The fixed ring (8) is L-shaped and the sealing plate (6) is located inside the fixed ring (8). The inside of the fixed ring (8), the inside of the sealing plate (6) and the inside of the steel ring plate (1) are all provided with threaded holes and threaded bolts (9). The fixed ring (8) is fixedly connected to the steel ring plate (1) and the sealing plate (6) through the fixing bolts (9) and the threaded holes.

2. The temporary waterproofing device for a tunnel portal of a tunneling machine according to claim 1, characterized in that: The steel ring plate (1) includes multiple arc-shaped plates (2) inside, and the multiple arc-shaped plates (2) are combined with each other to form the steel ring plate (1).

3. The temporary waterproofing device for a tunnel portal of a tunneling machine according to claim 2, characterized in that: The arc plate (2) has positioning grooves (3) at both ends on one side. The two adjacent positioning grooves (3) are provided with positioning plates (4). The positioning plates (4) and the arc plate (2) are provided with threaded holes and are threaded with positioning bolts (5).

4. The temporary waterproofing device for a tunnel portal of a tunneling machine according to claim 1, characterized in that: The airbag (7) is equipped with an external inflation pipe inside, and the airbag (7) is equipped with an air pressure sensor inside.

5. A temporary waterproofing device for a tunnel boring machine portal according to claim 1, characterized in that: The support plate (10) is arc-shaped, and there are several fixing plates (12), which are evenly arranged on the side of the support plate (10).

6. The temporary waterproofing device for a tunnel portal of a tunneling machine according to claim 1, characterized in that: The support plate (10) and the fixing ring (8) are both provided with threaded holes and threaded with first bolts (11). The support plate (10) is fixedly connected to the fixing ring (8) through the threaded holes and the first bolts (11). The fixing plate (12) and the support plate (10) are both provided with threaded holes and threaded with second bolts (13). The fixing plate (12) is fixedly connected to the support plate (10) through the second bolts (13) and the threaded holes.

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