Embedded sliding groove for shield segment

Abstract

The utility model discloses an embedded chute for a shield segment, which comprises an embedded chute body, embedded chute rivets, a shear-type cap and a double-end fixing screw, a plurality of embedded chute rivets are uniformly distributed on the embedded chute body, a reserved hole is arranged on the embedded chute body between two adjacent embedded chute rivets, the shear-type cap is arranged in the reserved hole, and the shear-type cap is arranged on the shear-type cap. The double-end fixing screw is installed in the preformed hole, the lower end of the double-end fixing screw is locked with the steel film, and the upper end of the double-end fixing screw is locked with the embedded sliding groove body through the shear type cap and the gasket. Through reasonable structural layout and optimized material selection, the pre-buried sliding groove slurry leakage cleaning operation process after the duct piece is demolded is omitted, then the cost expenditure of repairing personnel is reduced, the installation efficiency and stability of the shield duct piece are remarkably improved, the service life of the shield duct piece is remarkably prolonged, and a safer and more reliable solution is provided for shield tunnel construction.

Description

Technical Field

[0001] The utility model belongs to the technical field of tunnel shields, and in particular relates to a pre-buried chute for shield segments. Background Art

[0002] Shield segments are the primary assembly components of subway tunnel construction and the innermost barrier of the tunnel, responsible for resisting soil pressure, groundwater pressure, and some special loads. Pre-embedded chutes are pre-buried components embedded in the concrete of the shield segments. Their primary function is to support the subsequent installation of mechanical and electrical pipeline supports in the shield tunnel, acting as a load-bearing device. Therefore, the quality of the pre-embedded chutes used to secure the shield segments is crucial to the mechanical and electrical construction of the shield tunnel. Summary of the Invention

[0003] The purpose of the utility model is to provide a pre-buried chute for shield segments to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pre-embedded chute for shield segments, comprising a pre-embedded chute body, pre-embedded chute rivets, a shear-type cap and a double-headed fixing screw, wherein a plurality of pre-embedded chute rivets are evenly distributed on the pre-embedded chute body, and a reserved hole is opened on the pre-embedded chute body between two adjacent pre-embedded chute rivets, and the double-headed fixing screw is installed in the reserved hole, the lower end of the double-headed fixing screw is locked with the steel film, and the upper end of the double-headed fixing screw is locked with the pre-embedded chute body through the shear-type cap and the gasket, and the shear-type cap can automatically fall off after being subjected to force, so that the component can be demolded normally.

[0005] Preferably, the shear-type cap is provided with at least nine threads.

[0006] Preferably, the outer diameter of the gasket is 30-32 mm.

[0007] Preferably, the embedded slide groove rivet is I-shaped.

[0008] Preferably, the embedded chute body and the embedded chute rivet are integrally formed.

[0009] Preferably, the gasket is a rubber pad with a thickness of 3 mm.

[0010] Preferably, the middle portion of the double-headed fixing screw is elliptical.

[0011] Technical effects and advantages of this utility model:

[0012] 1. The integrated design of the embedded chute body and the embedded chute rivets greatly enhances the integrity and stability of the structure. This design reduces the safety risks caused by loose or falling components, while improving the installation accuracy and durability of the embedded chute of the shield segment.

[0013] 2. The use of double-headed fixing screws allows the embedded chute to be flexibly locked at the upper and lower ends according to actual needs during the installation process. This design not only simplifies the installation steps, but also improves the installation efficiency and ensures the tight connection between the embedded chute and the steel membrane and other structures.

[0014] 3. The at least nine threads set on the shear-type cap not only provide sufficient fastening force and vibration resistance, but also ensure that it can automatically fall off after being stressed, effectively reducing the impact of the shield segment on the embedded chute during the pouring and vibration process, thereby protecting the stability and safety of the shield segment.

[0015] 4. Using a gasket with an outer diameter of 30-32mm and a 3mm thick rubber pad as a gasket not only ensures sufficient pressure-bearing area, but also further reduces the impact of vibration and impact on the embedded chute body through the elastic properties of rubber, thereby extending its service life.

[0016] 5. The embedded chute rivets adopt an I-shaped design. This structure not only increases the mechanical strength of the rivets, but also improves their stability and anti-pullout ability in the embedded chute body, ensuring the reliability and safety of the embedded chute in long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2 It is a partial enlarged view of the present utility model.

[0019] Figure 3 This is a partial enlarged view of the utility model

[0020] In the figure: embedded chute body-1, embedded chute rivet-2, double-headed fixing screw-3, reserved hole-4, shear type cap-5, gasket-6, steel membrane-7, shield segment-8, and middle part of the fixing screw-9. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] like Figure 1-Figure 3The utility model shows a specific embodiment of a pre-embedded chute for a shield segment, comprising a pre-embedded chute body 1, a pre-embedded chute rivet 2 and a double-headed fixing screw 3. A plurality of pre-embedded chute rivets 2 are evenly distributed on the pre-embedded chute body 1. The pre-embedded chute body 1 and the pre-embedded chute rivets 2 are integrally formed, which greatly enhances the integrity and stability of the structure. A reserved hole 4 is opened on the pre-embedded chute body 1 between two adjacent pre-embedded chute rivets 2. The double-headed fixing screw 3 is installed in the reserved hole 4. The lower end of the double-headed fixing screw 3 is locked with the steel film 7, and the upper end of the double-headed fixing screw 2 is locked with the pre-embedded chute body 1 through a shear-type cap 5 and a gasket 6.

[0023] Among them, the double-headed fixing screw 3 is provided with at least nine threads, which can press down the embedded chute with greater force and better fastening, and the embedded chute is in closer contact with the bottom form, so that concrete slurry cannot penetrate, reducing the problem of slurry leakage on the surface of the embedded chute rubber strip;

[0024] The gasket 6 is a rubber gasket with an outer diameter of 31 mm and a thickness of 3 mm. When the electric wrench is tightened and subjected to force, it can effectively cover the reserved hole position of the embedded chute, effectively preventing the concrete slurry from penetrating into the gap between the gasket and the reserved hole position of the embedded chute;

[0025] The embedded chute rivet 2 is in an I-shape, which not only increases the mechanical strength of the rivet, but also improves its stability and anti-pullout ability in the embedded chute body, ensuring the reliability and safety of the embedded chute in long-term use.

[0026] The top of the embedded chute is provided with a reserved installation hole. Use an electric wrench to fix the shear cap (including gasket) on the double-headed fixing screw of the steel mold, so that the embedded chute fits tightly with the steel mold.

[0027] First, tighten the double-headed fixing screw to the steel mold, then place the embedded slide groove on the corresponding double-headed fixing screw according to the reserved hole position, and then hand-screw the nine threaded shear caps and outer diameter rubber pads on the top threads of the screw. Finally, use an electric wrench to install the plastic shear caps and gaskets in place.

[0028] The design of the embedded chute for the shield segments eliminates the need for cleaning leaks from the embedded chute after the segments are demoulded through a reasonable structural layout and optimized material selection, thereby reducing repair personnel expenses and significantly improving the installation efficiency, stability and service life of the shield segments, providing a safer and more reliable solution for shield tunnel construction.

[0029] The applicant further states that while the above-described embodiments illustrate the implementation methods and device structures of the present invention, the present invention is not limited to the above-described embodiments, nor does it imply that the present invention must rely on the above-described methods and structures in order to be implemented. Persons skilled in the art should understand that any improvements to the present invention, equivalent replacements for the implementation methods selected for the present invention, additions to steps, and selections of specific methods, etc., fall within the scope of protection and disclosure of the present invention.

[0030] The present invention is not limited to the above-mentioned embodiments. All methods that use structures and methods similar to those of the present invention to achieve the purpose of the present invention are within the protection scope of the present invention.

Claims

1. A pre-buried chute for shield segments, characterized by: The invention comprises a pre-embedded chute body (1), a pre-embedded chute rivet (2) and a double-headed fixing screw (3), wherein a plurality of pre-embedded chute rivets (2) are evenly distributed on the pre-embedded chute body (1), a reserved hole (4) is opened on the pre-embedded chute body (1) between two adjacent pre-embedded chute rivets (2), and the double-headed fixing screw (3) is installed in the reserved hole (4), the lower end of the double-headed fixing screw (3) is locked with the steel film, and the upper end of the double-headed fixing screw (2) is locked with the pre-embedded chute body (1) through a shear-type cap (5) and a gasket (6).

2. The embedded chute for shield segments according to claim 1, characterized in that: The shear line cap (5) is provided with at least nine threads.

3. The embedded chute for shield segments according to claim 1, characterized in that: The outer diameter of the gasket (6) is 30-32 mm.

4. The embedded chute for shield segments according to claim 1, characterized in that: The embedded slide rivet (2) is in an I-shape.

5. The embedded chute for shield segments according to claim 1, characterized in that: The embedded chute body (1) and the embedded chute rivet (2) are integrally formed.

6. The embedded chute for shield segments according to claim 1, characterized in that: The gasket (6) is a rubber pad with a thickness of 3 mm.

7. The embedded chute for shield segments according to claim 1, characterized in that: The middle portion of the double-headed fixing screw (2) is elliptical.

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