Embedded channel fixing structure for shield segment steel mold

Abstract

The utility model discloses an embedded channel fixing structure for a shield segment steel mould, and relates to the technical field of shield construction. The steel die comprises a steel die main body, a pre-buried channel main body is attached to the lower portion of the steel die main body, a butt joint assembly is arranged between the steel die main body and the pre-buried channel main body, a leakage-proof assembly is arranged on the inner wall of the pre-buried channel main body, an anti-loosening assembly is arranged on the surface of the butt joint assembly, the butt joint assembly comprises a containing hole, and the containing hole is communicated with the pre-buried channel main body. A containing hole is formed in the top of the inner wall of the pre-buried channel body, the bottom face of the steel die body is fixedly connected with an inner threaded pipe, the inner threaded pipe penetrates through the interior of the containing hole, and the inner wall of the inner threaded pipe is in threaded connection with a fastening bolt. And in addition, the self-adaption to the error of the punching position can be realized, so that the construction is more convenient.

Description

Technical Field

[0001] This utility model relates to the field of shield tunneling technology, specifically to a pre-embedded channel fixing structure for shield tunnel segment steel molds. Background Technology

[0002] With the development of modern cities, surface space is becoming increasingly scarce. Subways, as a transportation solution, play a vital role in alleviating traffic congestion due to their advantages of speed, stability, and lack of surface noise. Subways are typically constructed using shield tunneling technology, serving not only as an efficient transportation system but also as integrated utility tunnels capable of supplying urban water, electricity, and gas. During the precast casting of tunnel segments, pre-embedded channel structures are usually installed to facilitate later equipment installation, reduce post-anchoring work, and minimize damage to the lining segments.

[0003] However, due to the inaccurate drilling positions of conventional positioning bolts, the positioning holes on the back of the embedded channel and the positioning bolts often fail to fit tightly against the steel formwork surface, sometimes even leading to grout leakage. These problems not only increase later repair costs but also significantly reduce construction efficiency and project safety, necessitating urgent improvement and optimization solutions.

[0004] To address this, a pre-embedded channel fixing structure for shield tunnel segment steel formwork is proposed. Summary of the Invention

[0005] The purpose of this utility model is to provide a pre-embedded channel fixing structure for shield tunnel segment steel mold in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0007] A pre-embedded channel fixing structure for shield tunnel segment steel formwork includes a steel formwork body, an pre-embedded channel body attached to the lower part of the steel formwork body, a docking assembly between the steel formwork body and the pre-embedded channel body, a leak-proof assembly on the inner wall of the pre-embedded channel body, and an anti-loosening assembly on the surface of the docking assembly. The docking assembly includes a receiving hole located at the top of the inner wall of the pre-embedded channel body. An internally threaded pipe is fixedly connected to the bottom surface of the steel formwork body and passes through the inside of the receiving hole. A fastening bolt is threaded to the inner wall of the internally threaded pipe. The leak-proof assembly includes a slide rail fixedly connected to the top of the inner wall of the pre-embedded channel body. A baffle is slidably connected to the inner wall of the slide rail and slidably connected to the bottom of the receiving hole.

[0008] Furthermore, the anti-loosening component includes a mounting groove, which is formed on the surface of the fastening bolt. A spring is fixedly connected to the inner wall of the mounting groove, and a plug is fixedly connected to the telescopic end of the spring. The surface of the plug is slidably connected to the inner wall of the mounting groove. A stop bar is fixedly connected to the bottom end of the slide rail, and the top surface of the stop bar is in contact with the bottom surface of the plug.

[0009] Furthermore, the end of the insert has an inclined structure that is narrower at the top and wider at the bottom, and there are four inserts arranged in a circular array.

[0010] Furthermore, the size of the receiving hole is larger than that of the internally threaded pipe, and the size of the baffle is larger than that of the receiving hole.

[0011] The beneficial effects of this utility model are as follows:

[0012] After the main body of the embedded channel and the main body of the steel mold are attached, the steel mold and the main body of the embedded channel are locked together using the docking components. The connection position of the docking components can be adjusted by the anti-leakage components to eliminate design errors and seal the connection. The anti-loosening components can self-lock the docking components to prevent loosening. In use, this achieves the effect of facilitating stable installation of the embedded channel, preventing loosening after installation, and can adapt to the error of the drilling position, making construction more convenient. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0014] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0015] Figure 3 This is a front view of the leak-proof component structure of this utility model;

[0016] Figure 4 This is a front sectional view of the fastening bolt structure of this utility model;

[0017] Reference numerals in the attached drawings: 1. Steel mold body; 2. Embedded channel body; 3. Connecting assembly; 301. Receiving hole; 302. Internally threaded pipe; 303. Fastening bolt; 4. Leak-proof assembly; 401. Slide rail; 402. Baffle; 5. Anti-loosening assembly; 501. Mounting groove; 502. Spring; 503. Insert block; 504. Stop bar. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0020] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0021] In the description of the embodiments of this utility model, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] like Figures 1 to 4 As shown, a pre-embedded channel fixing structure for shield tunnel segment steel formwork includes a steel formwork body 1, a pre-embedded channel body 2 attached to the lower part of the steel formwork body 1, a docking assembly 3 between the steel formwork body 1 and the pre-embedded channel body 2, a leak-proof assembly 4 on the inner wall of the pre-embedded channel body 2, and an anti-loosening assembly 5 on the surface of the docking assembly 3. More specifically, after the pre-embedded channel body 2 and the steel formwork body 1 are attached, the docking assembly 3 is used to lock the steel formwork body 1 and the pre-embedded channel body 2. The leak-proof assembly 4 can adjust the connection position of the docking assembly 3 to eliminate design errors and seal the connection. The anti-loosening assembly 5 can self-lock the docking assembly 3 to prevent loosening.

[0023] The docking assembly 3 includes a receiving hole 301, which is located on the top of the inner wall of the pre-embedded channel body 2. An internally threaded pipe 302 is fixedly connected to the bottom surface of the steel mold body 1, and the internally threaded pipe 302 passes through the inside of the receiving hole 301. A fastening bolt 303 is threadedly connected to the inner wall of the internally threaded pipe 302. It should be noted that by rotating the fastening bolt 303 to tighten it and the internally threaded pipe 302, the pre-embedded channel body 2 can be stably installed and fixed.

[0024] The leak-proof component 4 includes a slide rail 401, which is fixedly connected to the top of the inner wall of the pre-embedded channel body 2. A baffle 402 is slidably connected to the inner wall of the slide rail 401, and the baffle 402 is slidably connected to the bottom of the receiving hole 301. More specifically, before connection, due to design errors, the holes on the surface of the baffle 402 cannot be directly aligned with the internally threaded pipe 302. Therefore, by sliding the baffle 402 along the inner wall of the slide rail 401, the position of the threaded hole on the surface of the baffle 402 can be adjusted until it is correctly aligned with the internally threaded pipe 302, thereby eliminating the error.

[0025] The anti-loosening component 5 includes a mounting groove 501, which is formed on the surface of the fastening bolt 303. A spring 502 is fixedly connected to the inner wall of the mounting groove 501, and a plug 503 is fixedly connected to the telescopic end of the spring 502. The surface of the plug 503 is slidably connected to the inner wall of the mounting groove 501. A stop bar 504 is fixedly connected to the bottom end of the slide rail 401, and the top surface of the stop bar 504 is in contact with the bottom surface of the plug 503. It should be noted that when the fastening bolt 303 and the internally threaded tube 302 are tightened, the plug 503 will be moved to the top of the stop bar 504. Under the elastic force of the spring 502, the plug 503 can remain stable, preventing the fastening bolt 303 from moving downwards. This ensures the stability of the connection between the fastening bolt 303 and the internally threaded tube 302 and prevents loosening.

[0026] The end of the insert 503 is an inclined structure that is narrower at the top and wider at the bottom. There are four inserts 503, and the four inserts 503 are arranged in a circular array. More specifically, when the fastening bolt 303 moves upward, it will drive the insert 503 upward. The end of the insert 503 will first contact the bottom of the stop bar 504. By setting the insert 503 to an inclined structure, the stop bar 504 will squeeze the insert 503, so that the insert 503 can be retracted into the mounting groove 501. By setting four inserts 503, it is convenient that when the fastening bolt 303 rotates to any angle, there is an insert 503 that can cooperate with the stop bar 504 to limit the movement.

[0027] The size of the receiving hole 301 is larger than that of the internally threaded tube 302, and the size of the baffle 402 is larger than that of the receiving hole 301. It should be noted that the larger size of the receiving hole 301 allows the internally threaded tube 302 to be positioned anywhere inside the receiving hole 301 during installation, making the installation more flexible. Due to the larger size of the baffle 402, it is ensured that the baffle 402 can completely cover the receiving hole 301 during the process of moving the baffle 402 and aligning it with the internally threaded tube 302.

[0028] In summary: After the pre-embedded channel body 2 and the steel mold body 1 are attached together, the steel mold body 1 and the pre-embedded channel body 2 are locked together using the docking component 3. The connection position of the docking component 3 can be adjusted by the anti-leakage component 4 to eliminate design errors and seal the connection. The anti-loosening component 5 can self-lock the docking component 3 to prevent loosening. In use, this achieves the effect of facilitating stable installation of the pre-embedded channel, preventing loosening after installation, and can adapt to the error of the drilling position, making construction more convenient.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A pre-embedded channel fixing structure for a shield segment steel form, characterized by, The utility model provides a steel mould body (1) is lower with the embedded channel body (2) of sticking, the embedded channel body (2) between steel mould body (1) and embedded channel body (2) is provided with butt joint subassembly (3), the inner wall of embedded channel body (2) is provided with leak protection subassembly (4), the surface of butt joint subassembly (3) is provided with anti -loosening subassembly (5), butt joint subassembly (3) includes accommodating hole (301), and accommodating hole (301) is set up in the inner wall top of embedded channel body (2), the bottom surface of steel mould body (1) is fixedly connected with internal thread pipe (302), and internal thread pipe (302) passes from the inside of accommodating hole (301), the inner wall of internal thread pipe (302) is screw threaded with fastening bolt (303), leak protection subassembly (4) includes slide rail (401), and slide rail (401) is fixedly connected with the inner wall top of embedded channel body (2), the inner wall sliding connection of slide rail (401) has baffle (402), and baffle (402) is slidably connected with the bottom of accommodating hole (301).

2. The pre-embedded channel fixing structure for a steel form of a shield segment according to claim 1, characterized in that, The anti-loosening subassembly (5) includes an installation groove (501) that is formed on the surface of the fastening bolt (303), the inner wall of the installation groove (501) is fixedly connected with a spring (502), the telescopic end of the spring (502) is fixedly connected with an insertion block (503), the surface of the insertion block (503) is slidably connected with the inner wall of the installation groove (501), the bottom end of the slide rail (401) is fixedly connected with a blocking strip (504), and the top surface of the blocking strip (504) is attached to the bottom surface of the insertion block (503).

3. The pre-embedded channel fixing structure for a steel form of a shield segment according to claim 2, characterized in that, The end of the insertion block (503) is an inclined structure that is narrow at the top and wide at the bottom, the number of the insertion block (503) is four, and the four insertion blocks (503) are arranged in a ring array.

4. The pre-embedded channel fixing structure for a steel form of a shield segment according to claim 1, characterized in that, The size of the accommodating hole (301) is larger than that of the internal thread pipe (302), and the size of the baffle (402) is larger than that of the accommodating hole (301).

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