CN212421728U

CN212421728U - Split type embedded sleeve for shield tunnel segment

Info

Publication number: CN212421728U
Application number: CN202020595559.4U
Authority: CN
Inventors: 戴跃斌
Original assignee: Worthy Rail Transit Technology Zhenjiang Co ltd
Current assignee: Worthy Rail Transit Technology Zhenjiang Co ltd
Priority date: 2020-04-21
Filing date: 2020-04-21
Publication date: 2021-01-29
Anticipated expiration: 2030-04-21

Abstract

The utility model discloses a split type pre-buried sleeve for shield tunnel segment, including sleeve main part and sheath, the sleeve main part be cylindric, the sleeve main part inside and outside wall is equipped with the linkage segment of sleeve internal thread and sleeve external screw thread respectively, the top of sleeve main part is equipped with the location section of outer hexagonal angle shape, the outer wall of sheath is hexagonal prism shape, the upper portion of sheath inner wall is equipped with the sheath internal thread, the lower part of sheath inner wall is equipped with the cylinder hole of cavity area tang; the sleeve external thread of the sleeve main body is matched with the sheath internal thread of the sheath. The sleeve top and the regular hexagonal appearance of sheath provide the axial spacing, prevent to rotate the skew, positional deviation can not appear, and positioning accuracy is high, ensures joint strength and durability, has improved engineering construction quality and efficiency, has alleviateed weight simultaneously, practices thrift raw and other materials, the cost is reduced.

Description

Split type embedded sleeve for shield tunnel segment

Technical Field

The utility model relates to a tunnel building engineering technical field, concretely relates to split type pre-buried sleeve for shield tunnel section of jurisdiction.

Background

The construction method is characterized in that a duct piece structure support is usually adopted in construction of the urban subway shield tunnel construction engineering, the duct piece is generally formed by concrete pouring and forming, and an embedded sleeve is arranged when concrete is poured, so that the rear anchoring workload on the interval tunnel lining duct piece during later-stage installation equipment is reduced, the damage and damage to the lining duct piece are reduced, the construction efficiency is improved, the operation environment in the tunnel is improved, and the strength and the durability of the duct piece are ensured.

In the conventional art, generally adopt the pre-buried sleeve of integral type, positional deviation easily appears in the prefabricated in-process of pouring of section of jurisdiction, later stage drawing of patterns difficulty, follow-up equipment fixing position precision is not high, influences engineering construction quality, and raw and other materials consume much, and weight is big, and is with high costs.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects of the prior art, the split pre-buried sleeve for the shield tunnel segment comprises a sleeve main body and a sheath, wherein the sleeve main body is cylindrical, the inner wall and the outer wall of the sleeve main body are respectively provided with a connecting section of a sleeve internal thread and a sleeve external thread, the top of the sleeve main body is provided with an external hexagonal positioning section, the outer wall of the sheath is hexagonal prism-shaped, the upper part of the inner wall of the sheath is provided with a sheath internal thread, and the lower part of the inner wall of the sheath is provided with a cylindrical hole with a spigot in the hollow cavity; the sleeve external thread of the sleeve main body is matched with the sheath internal thread of the sheath.

Furthermore, the sleeve main body is made of metal.

Furthermore, the sheath is made of non-metal materials.

Furthermore, the diameter of the hollow cylindrical hole of the sheath is smaller than that of the internal thread of the sheath, and a sheath chamfer is arranged at the transition position of the hollow cylindrical hole of the sheath and the internal thread of the sheath.

Furthermore, a sleeve chamfer matched with the sheath chamfer is arranged at the lower end of the sleeve external thread of the sleeve main body.

Still further, the outer diameter of the sheath is greater than the outer diameter of the positioning section of the sleeve body.

Furthermore, the embedded sleeve is of an integral structure formed by connecting the sleeve main body and the sheath through threads.

Furthermore, when the device is installed, the bolt to be connected passes through the hollow connecting hole of the sheath and is connected with the inner thread of the sleeve to realize installation.

Has the advantages that: the utility model discloses in, adopt split type pre-buried sleeve structure, sleeve main part passes through sleeve external screw thread and sheath internal thread connection, and the hexagonal prism appearance through the hexagon positioning section at sleeve top and sheath outer wall provides the axial spacing, has reached following technological effect:

(1) the positioning precision is high: the rotation deviation is prevented through the axial limiting of the embedded sleeve, so that the position deviation of the embedded sleeve in the segment prefabricating process can be avoided, and the installation quality is ensured;

(2) the installation efficiency is high: the post-anchoring operation after the shield segment is finished is reduced, and the construction efficiency is greatly improved;

(3) the damage to the structure of the tube sheet is reduced, and the structural strength and durability of the tube sheet are ensured;

(4) the utility model discloses in, structural design optimizes by a wide margin, under the unchangeable prerequisite of proof intensity, has saved a large amount of materials, uses the material only for about 40% of the pre-buried sleeve weight among the prior art.

Drawings

Fig. 1 is a schematic perspective view of a split type pre-buried sleeve for shield tunnel segments;

FIG. 2 is a schematic cross-sectional view of FIG. 1;

FIG. 3 is a perspective view of the sleeve body;

FIG. 4 is a schematic cross-sectional view of FIG. 3;

FIG. 5 is a perspective view of the sheath;

FIG. 6 is a schematic cross-sectional view of FIG. 5;

in the figure: 1. the sleeve comprises a sleeve body, 11, a sleeve internal thread, 12, a sleeve external thread, 13, a positioning section, 14, a sleeve chamfer, 2, a sheath, 21, a sheath internal thread, 22, a cylindrical hole, 23 and a sheath chamfer.

Detailed Description

In order to deepen the understanding of the present invention, the present invention will be further described in detail with reference to the following embodiments and the attached drawings, and the embodiments are only used for explaining the present invention, and do not constitute the limitation to the protection scope of the present invention.

As shown in fig. 1-6, a split type pre-buried sleeve for a shield tunnel segment comprises a sleeve main body 1 and a sheath 2, wherein the sleeve main body 1 is cylindrical, the inner wall and the outer wall of the sleeve main body 1 are respectively provided with a connecting section of a sleeve internal thread 11 and a sleeve external thread 12, the top of the sleeve main body is provided with an external hexagonal positioning section 13, the outer wall of the sheath 2 is hexagonal prism-shaped, the upper part of the inner wall of the sheath 2 is provided with a sheath internal thread 21, and the lower part of the inner wall of the sheath is provided with a hollow cylindrical hole 22 with a spigot; the sleeve external thread 12 of the sleeve body is matched with the sheath internal thread 21 of the sheath.

In this embodiment, the sleeve body 1 is made of metal; the sheath 2 is made of non-metal materials.

In this embodiment, the diameter of the hollow cylindrical hole 22 of the sheath is smaller than the diameter 21 of the sheath internal thread, and a sheath chamfer 23 is arranged at the transition between the hollow cylindrical hole 22 of the sheath and the sheath internal thread 21; the lower end of the external sleeve thread 12 of the sleeve main body 1 is provided with a sleeve chamfer 14 matched with the sheath chamfer 23.

In this embodiment, the outer diameter of the sheath 2 is larger than the outer diameter of the positioning section of the sleeve body 1.

In this embodiment, the embedded sleeve is an integral structure formed by connecting the sleeve body and the sheath through threads.

In the embodiment, when the device is installed, the bolt to be connected passes through the hollow connecting hole 22 of the sheath 2 and is connected with the sleeve internal thread 11 to realize installation.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A split type pre-buried sleeve for shield tunnel segments is characterized by comprising a sleeve main body and a sheath, wherein the sleeve main body is cylindrical, the inner wall and the outer wall of the sleeve main body are respectively provided with a connecting section of a sleeve internal thread and a sleeve external thread, the top of the sleeve main body is provided with an external hexagonal positioning section, the outer wall of the sheath is hexagonal prism-shaped, the upper part of the inner wall of the sheath is provided with a sheath internal thread, and the lower part of the inner wall of the sheath is provided with a hollow cylindrical hole with a spigot; the sleeve external thread of the sleeve main body is matched with the sheath internal thread of the sheath.

2. The split type embedded sleeve for the shield tunnel segment as claimed in claim 1, wherein the sleeve body is made of metal.

3. The split type embedded sleeve for the shield tunnel segment as claimed in claim 1, wherein the sheath is made of non-metal material.

4. The split type embedded sleeve for the shield tunnel segment as claimed in claim 1, wherein the diameter of the hollow cylindrical hole of the sheath is smaller than the diameter of the internal thread of the sheath, and a sheath chamfer is arranged at the transition between the hollow cylindrical hole of the sheath and the internal thread of the sheath.

5. The split type embedded sleeve for the shield tunnel segment as claimed in claim 4, wherein a sleeve chamfer matched with the sheath chamfer is arranged at the lower end of the sleeve external thread of the sleeve main body.

6. The split type embedded sleeve for the shield tunnel segment as claimed in claim 1, wherein the outer diameter of the sheath is larger than the outer diameter of the positioning section of the sleeve main body.

7. The split type embedded sleeve for the shield tunnel segment as claimed in claim 1, wherein the embedded sleeve is an integral structure formed by connecting the sleeve main body and the sheath through threads.

8. The split type embedded sleeve for the shield tunnel segment as claimed in claim 1, wherein when the device is installed, the bolts to be connected pass through the hollow connecting holes of the sheath and are connected with the inner threads of the sleeve to realize installation.