Self-bonding air bag sealing device

A technology of airbag sealing and inner airbag, which is applied in shaft equipment, wellbore lining, tunnel lining, etc., can solve the problems of water leakage, mud leakage, on-site handling difficulties, and easy engineering accidents in the working well, so as to reduce the initial and The effect of reaching the risk, preventing water leakage, and enhancing the sealing effect

Inactive Publication Date: 2012-02-08
SHANGHAI TUNNEL ENGINEERING CO. LTD.
5 Cites 7 Cited by

AI-Extracted Technical Summary

Problems solved by technology

[0003] The disadvantages of this kind of air bag sealing device for working well hole ring in practical engineering application are: it is difficult to ensure the flatness and smoothness of the shell surface of tunnel boring equipment, and the rubber air bag is very easy to be scratched and damaged...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Method used

[0028] The present invention adopts a prefabricated structure, which is convenient for on-site installation and is not easily damaged duri...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Abstract

The invention provides a self-bonding air bag sealing device. The self-bonding air bag sealing device comprises a steel casing ring, an internal pressure air bag and a guard plate, wherein, the steel casing ring is provided with an annular bottom plate, a sleeve is arranged on the periphery of the annular bottom plate, and the diameter of an inner ring surface of the sleeve is greater than that of peripheral surfaces of tunneling equipment and a tunnel segment structure; the internal pressure air bag is an annular air bag and is arranged in the inner ring surface of the sleeve; and the guard plate is an annular plate, is provided with an outer ring surface and an inner ring surface and is fixedly arranged on the inner ring surface of the sleeve, the section of the guard plate is in a U shape, the internal pressure air bag is clamped between the outer ring surface of the guard plate and the inner ring surface of the sleeve, and the diameter of the inner ring surface of the guard plate is smaller than that of the peripheral surfaces. The self-bonding air bag sealing device has the beneficial effects that during the traversing and removing process of the tunneling equipment, the guard plate tightly presses the shell of the tunneling equipment with the help of the internal pressure air bag so as to produce the sealing effect between the shell and tunnel segments, thus preventing the phenomena such as water leakage and mud leakage in holes.

Application Domain

Technology Topic

Image

  • Self-bonding air bag sealing device
  • Self-bonding air bag sealing device
  • Self-bonding air bag sealing device

Examples

  • Experimental program(1)

Example Embodiment

[0022] See figure 1 , figure 2 As shown, the self-wrapped airbag sealing device 1 of the present invention is a ring-shaped device, which is arranged on the inner shaft wall of the tunnel working shaft close to the tunnel starting or reaching the portal, and its axis coincides with the axis of the portal , Which mainly includes a steel collar 10, a U-shaped composite cord rubber guard plate 20, and a rubber pressure inner airbag 30, which is sandwiched between the steel collar 10 and the U-shaped composite cord rubber guard plate 20 between.
[0023] Cooperate image 3 , Figure 4 As shown, the rubber pressure inner airbag 30 is an annular rubber airbag with a plurality of inlet/exhaust holes 31 provided.
[0024] Cooperate figure 2 , Figure 5 As shown, the steel collar 10 includes an annular bottom plate 11, which is fixed on the inner side wall of the tunnel working shaft close to the beginning of the tunnel or the side of the tunnel door. The outer edge of the annular bottom plate 11 is provided with a sleeve 13 A number of reserved grouting holes 12 are provided on the pipe 13. To ensure the smooth passage of the shield machine, the diameter of the inner ring surface of the annular bottom plate 11 and the casing 13 is larger than the diameter of the outer circumferential surface of the tunnel boring equipment.
[0025] Cooperate Image 6 As shown, the U-shaped composite cord rubber guard 20 is an annular rubber plate with an outer ring surface 212 and an inner ring surface 211, including two sections of reinforced rubber 21 at the ends of the cross section and an elastic rubber 22 in the middle of the cross section. . The diameter of the inner ring surface 211 of the U-shaped composite cord rubber guard plate 20 is smaller than the diameter of the outer peripheral surface of the tunnel boring equipment and the tunnel segment structure.
[0026] The implementation process of the novel airbag sealing device 1 of the present invention:
[0027] See Figure 5 As shown, before the tunnel boring equipment 40 reaches the self-wrapped airbag sealing device 1, the axis should be retested to ensure that the eccentricity of the tunnel boring equipment 40 is within the design range. After the re-measurement of the axis of the tunnel boring equipment 40 is completed, the new airbag sealing device 1 of the present invention is installed on the inner side wall of the tunnel working shaft near the side of the starting or reaching the portal. After the installation is completed, the tunnel boring equipment 40 performs initial or arrival boring construction. Further cooperation Image 6 As shown, since the diameter of the outer peripheral surface 411 of the casing of the tunnel boring equipment 40 is greater than the diameter of the inner ring surface 211 of the U-shaped composite cord rubber guard 20, during the tunneling process, the outer peripheral surface 411 of the casing squeezes the U-shaped composite cord rubber guard 20 , The reinforced rubber 21 of the U-shaped composite cord rubber shield 20 resists the friction drag force of the tunnel boring equipment 40 and keeps the self-grip airbag sealing device 1 safe to use, while the elastic rubber 22 of the U-shaped composite cord rubber shield 20 is affected by the tunnel The squeezing of the tunnel boring equipment 40 causes it to expand, and the elastic rubber 22 tightly grips and wraps the outer peripheral surface 411 of the casing of the tunnel boring equipment 40 to prevent water and mud leakage in the tunnel. If the elastic rubber 22 has insufficient grip on the outer peripheral surface 411 of the casing of the tunnel boring equipment 40, the emergency system can be activated to inflate the rubber pressure inner airbag 30 through the inflating/venting hole 31 of the rubber pressure inner airbag 30 to increase the air pressure and increase the elasticity. The gripping force of the rubber 22 on the outer peripheral surface 411 of the casing of the tunnel boring equipment 40. If the tunnel boring equipment 40 receives too much friction from the elastic rubber 22 when passing through the self-wrapped airbag sealing device 1, it is possible to inject grease and other materials through the reserved grouting hole 12 of the steel collar 10 to reduce the passage of the tunnel boring equipment 40 Friction at the time. Further cooperation Figure 7 As shown, after the tunnel boring equipment 40 comes out of the self-wrapped airbag sealing device 1, for the same reason, since the diameter of the outer circumferential surface 511 of the tunnel segment 50 is larger than the diameter of the inner ring surface 211 of the U-shaped composite cord rubber guard plate 20, the U-shaped composite cord The elastic rubber 22 of the rubber protective plate 20 is still supported by the tube piece 50, and the elastic rubber 22 tightly grips and wraps the outer peripheral surface 511 of the tunnel tube piece 50 to prevent water and mud leakage in the tunnel ring. For the use of the filling/venting holes 31 of the rubber pressure inner airbag 30 and the reserved grouting holes 12 of the steel collar 10, refer to the passage of the tunnel boring equipment 40. When the tunnel boring equipment 40 is completely released from the self-grip airbag sealing device 1 of the present invention, the elastic rubber 22 of the U-shaped composite cord rubber guard plate 20 tightly presses the tube sheet 50, and a grouting hole is reserved through the steel collar 10 12 Inject grouting inward to form a grouting curtain 60, which fills the gap between the starting and arriving tunnel circle and the segment 50 of the working well, thereby blocking the tunnel door. After the slurry solidifies and blocks the muddy water outside the tunnel circle, the present invention is removed. The airbag sealing device 1 is wrapped, and the entire tunnel working shaft starts or arrives at the end of construction.
[0028] The invention adopts a prefabricated structure, is convenient to install on site, is not easy to be damaged during the construction process, is suitable for starting and arriving construction of the tunnel working shaft, and can be recycled and reused.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

no PUM

Description & Claims & Application Information

We can also present the details of the Description, Claims and Application information to help users get a comprehensive understanding of the technical details of the patent, such as background art, summary of invention, brief description of drawings, description of embodiments, and other original content. On the other hand, users can also determine the specific scope of protection of the technology through the list of claims; as well as understand the changes in the life cycle of the technology with the presentation of the patent timeline. Login to view more.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Similar technology patents

Classification and recommendation of technical efficacy words

Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products