An air bag plugging device for anchor cable construction

Abstract

The utility model discloses an air bag plugging device for anchor cable construction, including air bag and rubber stick, the air bag is hollow structure of cylindrical shape after filling, and the rubber stick perforation is set up on the air bag, and the rubber stick perforation penetrates the top surface and the bottom surface of air bag, and the rubber stick is set in the rubber stick perforation, the rubber stick is set up anchor cable jack and process pipeline jack, and the anchor cable jack and process pipeline jack all penetrate the top surface and the bottom surface of rubber stick. In the technical scheme, the conventional method of opening hole on the air bag is cancelled, and the anchor cable jack and process pipeline jack are all set up on the rubber stick, so that the air bag structure is simplified, and the reliability of the air bag is improved, and the problem that the air bag is easy to break in application is avoided.

Description

Technical Field

[0001] This utility model relates to the field of foundation pit engineering technology, specifically to an airbag sealing device for anchor cable construction. Background Technology

[0002] During anchor cable construction, it is necessary to ensure the anchoring force of the anchoring section. To ensure construction quality, existing technology employs a combination of normal pressure grouting and pressurized grouting. First, conventional grouting is used to grout the bottom of the anchor cable hole, maintaining the grout surface at a predetermined distance from the hole opening. Then, pressurized grouting is performed on the portion near the hole opening. During pressurized grouting, a predetermined pressure must be maintained. Therefore, the hole opening needs to be properly sealed to allow it to withstand a certain pressure. Existing sealing devices often use an inflatable airbag. When the airbag is inserted into the hole opening, it inflates into a cylindrical shape, thus adhering tightly to the inner wall of the anchor cable hole. A detachable rubber rod is located in the center of the airbag, with anchor cable insertion holes for the anchor cable to pass through. The airbag also has multiple through-holes for process pipelines (including grouting pipes and splitting pipes). Then, pressurized grouting can be performed on the portion between the bottom of the airbag and the normal pressure grout surface.

[0003] In the process of realizing this utility model, the inventors discovered that the prior art has at least the following problems:

[0004] The airbag has insertion holes, and each insertion hole requires a sidewall to prevent air leakage. Therefore, in addition to the inner and outer sidewalls (the inner sidewall is used to insert the rubber rod), the entire airbag has multiple insertion hole sidewalls between the inner and outer sidewalls, and the insertion holes are elongated holes. This "hole within a bag" composite structure greatly increases the manufacturing difficulty, resulting in low airbag reliability and frequent accidental ruptures during practical applications. Therefore, simplifying the airbag structure to improve the reliability of the sealing device is a problem that needs to be solved. Utility Model Content

[0005] This utility model provides an airbag sealing device for anchor cable construction, which simplifies the airbag structure, thereby improving the reliability of the airbag and avoiding the problem of airbag rupture during application.

[0006] To achieve the above objectives, this utility model provides an airbag sealing device for anchor cable construction, comprising an airbag and a rubber rod; the airbag, when inflated, has a cylindrical hollow structure, and a rubber rod perforation is provided in the middle of the airbag, with the perforation penetrating the top and bottom surfaces of the airbag, and the rubber rod is fitted inside the rubber rod perforation; the rubber rod has anchor cable insertion holes and process pipeline insertion holes, both of which penetrate the top and bottom surfaces of the rubber rod.

[0007] Furthermore, the airbag sealing device for anchor cable construction also includes an inflation connector, which is connected to the top surface of the airbag and is in communication with the interior of the airbag.

[0008] Furthermore, there are multiple anchor cable insertion holes and multiple process pipeline insertion holes.

[0009] Furthermore, the airbag sealing device for anchor cable construction also includes a first pipe plug and a second pipe plug. The top end of the anchor cable insertion hole is provided with a first internal thread, the first pipe plug is provided with a first external thread that matches the first internal thread, the top end of the process pipeline insertion hole is provided with a second internal thread, and the second pipe plug is provided with a second external thread that matches the second internal thread.

[0010] Furthermore, the airbag sealing device for anchor cable construction also includes a handle, which is detachably connected to the top surface of the rubber rod.

[0011] Furthermore, the airbag includes a cap, a bottom cap, an inner cylinder, and an outer cylinder. The cap and bottom cap are parallel to each other, the inner cylinder and the outer cylinder are coaxially arranged, the top of the inner cylinder and the top of the outer cylinder are connected to the cap, and the bottom of the inner cylinder and the bottom of the outer cylinder are connected to the bottom cap.

[0012] The above technical solution has the following beneficial effects:

[0013] In this technical solution, all anchor cable insertion holes and process pipeline insertion holes are made on the rubber rod, eliminating the need for long, thin insertion holes between the inner and outer walls of the airbag. Compared to the conventional approach of opening holes on the airbag, this significantly simplifies the airbag structure, eliminating the "holes within the airbag" composite structure inside. This makes the airbag easier to manufacture, and the simplified airbag experiences more uniform stress when under pressure, thereby improving the airbag's reliability and preventing airbag rupture during application. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of an airbag sealing device for anchor cable construction according to an embodiment of this utility model;

[0016] Figure 2 This is a schematic diagram of the airbag structure in an embodiment of this utility model;

[0017] Reference numerals: 10. Airbag; 11. Cap; 12. Bottom cap; 13. Inner cylinder; 14. Outer cylinder; 15. Rubber rod perforation; 16. Outer cylinder limiting groove; 17. Inner cylinder limiting groove; 18. Outer cylinder reinforcing ring; 19. Rubber ring; 20. Rubber rod; 21. Anchor cable insertion hole; 22. Process pipeline insertion hole; 30. Handle; 40. Inflation connector; 41. Cap vent hole; 50. Isolation rubber pad. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] like Figure 1 As shown, this utility model embodiment provides an airbag sealing device for anchor cable construction. Its main structure includes an airbag 10 and a rubber rod 20. After being inflated, the airbag 10 has a cylindrical hollow structure. A rubber rod through-hole 15 is opened in the middle of the airbag 10, and the rubber rod through-hole 15 penetrates the top surface (the surface facing the outside of the anchor cable hole during operation) and the bottom surface of the airbag 10. The rubber rod 20 is sleeved in the rubber rod through-hole 15. An anchor cable insertion hole 21 and a process pipeline insertion hole 22 are opened on the rubber rod 20. The direction of the anchor cable insertion hole 21 and the process pipeline insertion hole 22 is parallel to the rubber rod through-hole 15, that is, the anchor cable insertion hole 21 and the process pipeline insertion hole 22 both penetrate the top surface and the bottom surface of the rubber rod 20.

[0020] When performing pressurized grouting of anchor cable holes, first insert the airbag 10 into the reserved position in the anchor cable hole, pass the anchor cable through the anchor cable insertion hole 21, pass the process pipeline through the process pipeline insertion hole 22, and then insert the rubber rod 20 into the rubber rod through hole 15. After that, inflate the airbag 10 until it is fully inflated. The outer wall of the airbag 10 can then be squeezed tightly against the hole wall of the anchor cable hole. At the same time, the inner wall of the airbag 10 can squeeze the rubber rod 20 inside. At this point, the preparation work is completed, and pressurized grouting can be carried out.

[0021] In this technical solution, the process pipeline insertion hole 22, originally located on the airbag 10, is transferred to the rubber rod 20. This eliminates the need for insertion holes on the airbag 10, greatly simplifying its structure. The airbag 10 only requires two end faces, and an inner and outer sidewall connecting the end faces. Unlike existing technologies, it does not require a continuous insertion hole between the inner and outer sidewalls. This makes the airbag 10 easier to manufacture, indirectly improving its quality and ensuring it does not leak or break during use. Furthermore, since the rubber rod 20 is a solid cylindrical structure, inserting insertion holes into it after its fabrication does not negatively impact its strength or processing difficulty, nor does it affect the sealing effect between the rubber rod and the perforation 15.

[0022] Furthermore, the airbag sealing device for anchor cable construction also includes an inflation connector 40, which is detachably connected to the top surface of the airbag 10 (e.g., by screw connection), and the inflation connector 40 is in communication with the interior of the airbag 10. The inflation connector 40 is preferably a quick-connect connector, so that it can be quickly connected to an external air source or deflation device to inflate or deflate the airbag 10 during use.

[0023] Furthermore, since multiple anchor cables are used during anchor cable construction, the anchor cable insertion holes 21 need to be set to multiple locations (e.g., 3 or 4) according to actual needs. Simultaneously, the process piping includes grouting pipes and grout splitting pipes, so multiple process piping insertion holes 22 are also required. It should be noted that in existing technologies, two process piping insertion holes 22 are provided (for grouting pipes and grout splitting pipes), while this technical solution, to expand its application range, can set three or four process piping insertion holes 22 to leave enough spare holes. For example, when the anchor cable hole is below the water level, a drainage pipe also needs to be installed, which can be routed through one process piping insertion hole 22.

[0024] Furthermore, the number of anchor cables and process pipelines may vary depending on the actual conditions at different sites. Therefore, sufficient anchor cable insertion holes 21 and process pipeline insertion holes 22 should be reserved to avoid insufficient insertion holes during operation. When the number of insertion holes exceeds the actual needs, the excess insertion holes should be sealed. Otherwise, these excess insertion holes will become leakage points, causing the airbag sealing device for anchor cable construction to fail to seal the anchor cable holes, making it impossible for the anchor cable holes to withstand pressure and preventing pressurized grouting. To seal the excess insertion holes, a first pipe plug (for sealing anchor cable insertion holes 21) and a second pipe plug (for sealing process pipeline insertion holes 22) can be installed. The pipe plugs and the corresponding insertion holes are all provided with matching threads to facilitate installation and disassembly.

[0025] Furthermore, the airbag sealing device for anchor cable construction also includes a handle 30 for easy operation, which is detachably connected (e.g., by screwing) to the top surface of the rubber rod 20.

[0026] Furthermore, the simplest structure of the airbag 10 is an integrally formed structure of the front and rear ends and the inner and outer side walls, i.e., it is formed from a single flexible membrane. However, although this method seems simple, it is very difficult to manufacture and has limited pressure-bearing capacity. Therefore, in practical applications, the most preferred method is to manufacture the front end, rear end, inner side wall, and outer side wall separately, and then assemble the parts. A specific embodiment using this assembly method is shown below. Figure 2 As shown in this specific embodiment:

[0027] The airbag 10 includes a cover 11 (equivalent to the front end), a bottom cover 12 (equivalent to the rear end), an inner cylinder 13 (equivalent to the inner side wall), and an outer cylinder 14 (equivalent to the outer side wall). The cover 11 and the bottom cover 12 can be made of materials such as rubber or nylon, and the cover 11 and the bottom cover 12 are parallel to each other. A through hole (i.e., a rubber rod through hole 15) is opened in the middle of the cover 11 and the bottom cover 12. A vent hole 41 is opened on the cover 11 corresponding to the installation position of the inflation connector 40. The inner cylinder 13 (made of PVC) and the outer cylinder 14 (made of rubber) are coaxially arranged. At the same time, an inwardly recessed outer cylinder limiting groove 16 is opened on the outer side of the cover 11 and the outer side of the bottom cover 12. The two ends of the outer cylinder 14 are respectively provided with corresponding recessed sections, which are inserted into the outer cylinder. The cylinder limiting groove 16 achieves positioning and connection. At the same time, the outer cylinder reinforcing ring 18 is used to clamp the recessed sections at both ends of the outer cylinder 14 into the outer cylinder limiting groove 16, so that the outer cylinder 14 can be connected to the cap 11 and the bottom cap 12 respectively, and no axial movement will occur. The bottom surface of the cap 11 and the top surface of the bottom cap 12 are respectively provided with inner cylinder limiting grooves 17. The two ends of the inner cylinder 13 can be inserted into the corresponding inner cylinder limiting grooves 17. In order to maintain the seal, a sealing gasket can be placed between the bottom of the inner cylinder limiting groove 17 and the end face of the inner cylinder 13. In addition, in order to avoid damage to the inner cylinder 13 during the insertion and removal of the rubber rod 20, multiple rubber rings 19 are provided on the inner side of the inner cylinder 13. After the airbag 10 is inflated, the rubber rings 19 are tightly fitted with the rubber rod 20 to fix the rubber rod 20.

[0028] Meanwhile, as shown in the figure, multiple recessed sections are provided on the outer cylinder 14, and an outer cylinder reinforcing ring 18 is attached to the outside of each recessed section. This design divides the entire outer cylinder 14 into multiple sections from top to bottom, so that the outer cylinder 14 can expand in sections when inflated, thereby avoiding the problem of cracking between the outer cylinder 14 and the cap 11, and solving the problem of inconsistent deformation between the top and bottom of the outer cylinder 14.

[0029] In addition, an isolation rubber pad 50 is also attached to the bottom of the sealing bottom 12. After the pressurized grouting is completed, the isolation rubber pad 50 can isolate the grout in the anchor cable hole from the airbag sealing device for anchor cable construction, thereby ensuring that after the gas in the airbag 10 is discharged, the airbag sealing device for anchor cable construction can be easily removed for recycling.

[0030] In the above detailed description, various features are combined together in a single embodiment to simplify this disclosure. This approach to disclosure should not be construed as reflecting an intention that embodiments of the claimed subject matter require more features than are explicitly stated in each claim. Rather, as reflected in the appended claims, the invention is presented with fewer features than all of the features in a single disclosed embodiment. Therefore, the appended claims are hereby explicitly incorporated into the detailed description, with each claim representing a separate preferred embodiment of the invention.

[0031] The disclosed embodiments have been described above to enable any person skilled in the art to implement or use this invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be applied to other embodiments without departing from the spirit and scope of this disclosure. Therefore, this disclosure is not limited to the embodiments given herein, but is consistent with the widest scope of the principles and novel features disclosed in this application.

[0032] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. An airbag sealing device for anchor cable construction, characterized in that, Includes an airbag (10) and a rubber rod (20); The airbag (10) is a cylindrical hollow structure after being inflated. A rubber rod perforation (15) is provided in the middle of the airbag (10), and the rubber rod perforation (15) penetrates the top and bottom surfaces of the airbag (10). The rubber rod (20) is sleeved in the rubber rod perforation (15). The rubber rod (20) has an anchor cable insertion hole (21) and a process pipeline insertion hole (22), both of which penetrate the top and bottom surfaces of the rubber rod (20).

2. The airbag sealing device for anchor cable construction as described in claim 1, characterized in that, It also includes an inflation connector (40), which is connected to the top surface of the airbag (10) and communicates with the interior of the airbag (10).

3. The airbag sealing device for anchor cable construction as described in claim 1, characterized in that, There are multiple anchor cable insertion holes (21) and multiple process pipeline insertion holes (22).

4. The airbag sealing device for anchor cable construction as described in claim 3, characterized in that, It also includes a first pipe plug and a second pipe plug. The top end of the anchor cable insertion hole (21) is provided with a first internal thread, the first pipe plug is provided with a first external thread that matches the first internal thread, the top end of the process pipeline insertion hole (22) is provided with a second internal thread, and the second pipe plug is provided with a second external thread that matches the second internal thread.

5. The airbag sealing device for anchor cable construction as described in claim 2, characterized in that, It also includes a handle (30) which is detachably connected to the top surface of the rubber rod (20).

6. The airbag sealing device for anchor cable construction as described in claim 1, characterized in that, The airbag (10) includes a cap (11), a bottom cap (12), an inner cylinder (13), and an outer cylinder (14). The cap (11) and the bottom cap (12) are parallel to each other. The inner cylinder (13) and the outer cylinder (14) are coaxially arranged. The top end of the inner cylinder (13) and the top end of the outer cylinder (14) are both connected to the cap (11). The bottom end of the inner cylinder (13) and the bottom end of the outer cylinder (14) are both connected to the bottom cap (12).

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