Prestressed corrugated pipe for bridge construction

Abstract

The utility model relates to the technical field of structural engineering, and discloses a prestressed corrugated pipe for bridge construction, which comprises a first corrugated pipe and a second corrugated pipe, the upper end of the outer end face of the first corrugated pipe is provided with external threads, and the inner end face of the lower part of the second corrugated pipe is provided with internal threads corresponding to the external threads; the first corrugated pipe is connected with the second corrugated pipe in a screwed mode through the external threads and the internal threads. An annular limiting inserting plate is welded to the outer wall face of the first corrugated pipe, and a buckle device corresponding to the annular limiting inserting plate is fixedly connected to the outer wall face of the second corrugated pipe. According to the device, the corrugated pipe can be quickly connected, and the construction efficiency is remarkably improved; in practical application, a constructor only needs to screw the external thread of the first corrugated pipe with the internal thread of the second corrugated pipe to finish connection, and tedious screw screwing operation is not needed, so that the construction efficiency of a project is improved.

Description

Technical Field

[0001] This utility model relates to the field of structural engineering technology, specifically to a prestressed corrugated pipe used in bridge construction. Background Technology

[0002] Prestressed corrugated pipes are a type of tubing used in bridge construction for threading prestressing tendons. They are typically made of plastic or metal and have a corrugated outer surface. The main function of prestressed corrugated pipes is to protect the prestressing tendons during concrete pouring, preventing concrete from entering the tendon ducts and ensuring the tendons can be freely tensioned after the concrete hardens. The prestressing tendons generate prestress within the concrete through the corrugated pipe, thereby improving the load-bearing capacity and durability of the bridge structure. However, existing prestressed corrugated pipes still have certain drawbacks, such as:

[0003] Application No. 202322903815.8, entitled "A Prestressed Corrugated Pipe," includes a corrugated pipe body. This prestressed corrugated pipe is further provided with a connecting mechanism, including a connecting frame, a moving frame, two fixing rings, and four fixing blocks. The two fixing rings are located at the left and right ends of the corrugated pipe body, and both ends of the corrugated pipe body are fixedly connected to the two fixing rings facing the corrugated pipe body. In actual use, this type of prestressed corrugated pipe requires construction workers to tighten the screws at both ends separately, resulting in reduced construction efficiency and failing to meet the usage requirements. In view of this, a prestressed corrugated pipe for bridge construction is proposed to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide a prestressed corrugated pipe for bridge construction, so as to solve the problem mentioned in the background art that the installation of existing prestressed corrugated pipes for bridge construction is cumbersome, resulting in low construction progress.

[0005] To achieve the above objectives, this utility model provides the following technical solution: It includes a first corrugated pipe and a second corrugated pipe. The upper end of the outer end face of the first corrugated pipe is provided with an external thread, and the lower inner end face of the second corrugated pipe is provided with an internal thread corresponding to the external thread. The first corrugated pipe is screwed into the second corrugated pipe via the external and internal threads. An annular limiting plug-in plate is welded to the outer wall of the first corrugated pipe, and a snap-fit ​​device corresponding to the annular limiting plug-in plate is fixedly connected to the outer wall of the second corrugated pipe.

[0006] The above technical solution facilitates the rapid connection of prestressed corrugated pipes, thereby improving construction efficiency and accelerating project progress.

[0007] As a preferred technical solution of this utility model, the buckling device consists of an annular limiting shell, a torsion spring assembly, and a limiting block.

[0008] The above technical solution facilitates the rapid positioning and fixing of prestressed corrugated pipes, ensuring the stability and reliability of the corrugated pipe connection. The annular limiting shell can fit tightly with the annular limiting plug plate, while the torsion spring assembly provides the necessary elasticity, so that the limiting block can be firmly locked in the corresponding position after insertion, thereby ensuring that the corrugated pipe will not shift when subjected to prestress. In addition, the buckling device has a simple structure and is easy to operate, greatly improving the convenience and efficiency of construction.

[0009] As a preferred embodiment of this utility model, the upper end face of the torsion spring assembly is fixedly connected to the inner end face of the annular limiting shell.

[0010] The above technical solution facilitates rapid locking of the buckle device, thereby further simplifying the construction process and improving the convenience and safety of the operation. In addition, the limiting block can closely cooperate with the annular limiting plug plate to ensure the stability of the corrugated pipe after connection and prevent displacement or detachment during construction, thus ensuring construction quality. Through this structural design, the prestressed corrugated pipe of this utility model can more efficiently and safely complete the application of prestress in bridge construction, significantly improving the overall efficiency and quality of bridge construction.

[0011] As a preferred embodiment of this utility model, the torsion spring assembly is circumferentially arranged about the center of the annular limiting shell.

[0012] By adopting the above technical solution, it is possible to ensure that the buckling device remains stable during the screwing process and prevent connection instability caused by the offset of the torsion spring assembly. Through this structural design, not only is the reliability of the bellows connection improved, but the convenience of construction operation is also further optimized.

[0013] As a preferred embodiment of this invention, the tail end of the torsion spring assembly is fixedly connected to the limiting block.

[0014] The above technical solution facilitates a quick and stable connection. The torsion spring assembly ensures that the buckle device has a certain elasticity and self-locking capability during connection, while the limiting block is used to fix and lock the relative position of the corrugated pipe to prevent it from loosening during construction. Through this structural design, the connection operation of the prestressed corrugated pipe becomes simple and quick, greatly improving construction efficiency while ensuring the reliability of the connection.

[0015] As a preferred embodiment of this utility model, the outer end face of the annular limiting plug plate is provided with a limiting groove corresponding to the limiting block.

[0016] The above technical solution facilitates the precise positioning of the annular limiting shell and the limiting block, thereby ensuring the stability and accuracy of the corrugated pipe during installation.

[0017] Compared with the prior art, the beneficial effects of this utility model are: the device can realize the rapid connection of corrugated pipes, which significantly improves construction efficiency; in practical applications, construction personnel only need to screw the external thread of the No. 1 corrugated pipe into the internal thread of the No. 2 corrugated pipe to complete the connection, without the need for cumbersome screw tightening operations; in addition, the combined use of the annular limiting plug plate and the buckle device ensures the stability and sealing of the corrugated pipe connection, effectively prevents concrete from seeping into the prestressing tendon duct, ensures the free tensioning of the prestressing tendons, and thus improves the load-bearing capacity and durability of the bridge structure.

[0018] 1. When workers are carrying out construction and installation, they connect the No. 1 corrugated pipe and the No. 2 corrugated pipe by screwing them together with external and internal threads. During the process of screwing the No. 1 corrugated pipe forward, the No. 1 corrugated pipe drives the annular limiting plug plate into the annular limiting shell.

[0019] 2. When the annular limiting plug plate is inserted into the annular limiting shell, the annular limiting plug plate will push the limiting block to move backward; then, under the action of the torsion spring assembly, the limiting block will reset, and the tail end of the limiting block will be locked into the limiting groove on the outer end face of the annular limiting plug plate, thereby ensuring the locking state of the bellows. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the connection structure between the No. 1 corrugated pipe and the No. 2 corrugated pipe of this utility model;

[0021] Figure 2 This is a schematic diagram of the connection structure between the No. 1 corrugated pipe and the external thread of this utility model;

[0022] Figure 3 This is a schematic diagram of the connection structure between the No. 2 corrugated pipe and the internal thread of this utility model;

[0023] Figure 4 This is a schematic diagram of the connection structure between the limiting block and the annular limiting plug plate of this utility model;

[0024] Figure 5 This is a schematic diagram of the connection structure between the No. 1 corrugated pipe and the annular limiting plug plate of this utility model.

[0025] In the diagram: 1. No. 1 bellows; 2. No. 2 bellows; 3. External thread; 4. Internal thread; 5. Annular limiting plug plate; 6. Buckling device; 601. Annular limiting shell; 602. Torsion spring assembly; 603. Limiting block. Detailed Implementation

[0026] 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.

[0027] Please see Figures 1-5 The present invention provides a prestressed corrugated pipe for bridge construction, comprising a first corrugated pipe 1 and a second corrugated pipe 2. The first corrugated pipe 1 has an external thread 3 on its upper outer end face, and the second corrugated pipe 2 has an internal thread 4 corresponding to the external thread 3 on its lower inner end face. The first corrugated pipe 1 is screwed into the second corrugated pipe 2 via the external thread 3 and the internal thread 4. An annular limiting plug-in plate 5 is welded to the outer wall of the first corrugated pipe 1, and a snap-fit ​​device 6 corresponding to the annular limiting plug-in plate 5 is fixedly connected to the outer wall of the second corrugated pipe 2. This facilitates rapid connection of the prestressed corrugated pipe, thereby improving construction efficiency and accelerating project progress.

[0028] The snap-fit ​​device 6 consists of an annular limiting shell 601, a torsion spring assembly 602, and a limiting block 603. It facilitates the rapid positioning and fixing of the prestressed corrugated pipe, ensuring the stability and reliability of the corrugated pipe connection. The annular limiting shell 601 can fit tightly with the annular limiting insertion plate 5, while the torsion spring assembly 602 provides the necessary elasticity, so that the limiting block 603 can be firmly locked in the corresponding position after insertion, thereby ensuring that the corrugated pipe will not shift when subjected to prestress. In addition, the snap-fit ​​device 6 has a simple structure and is easy to operate, which greatly improves the convenience and efficiency of construction.

[0029] The upper end face of the torsion spring assembly 602 is fixedly connected to the inner end face of the annular limiting shell 601, which facilitates the quick locking of the buckle device 6, thereby further simplifying the construction process and improving the convenience and safety of the operation. In addition, the limiting block 603 can fit tightly with the annular limiting plug plate 5 to ensure the stability of the corrugated pipe after connection and prevent displacement or detachment during construction, thereby ensuring the construction quality. Through this structural design, the prestressed corrugated pipe of this utility model can complete the application of prestress more efficiently and safely in bridge construction, significantly improving the overall efficiency and quality of bridge construction.

[0030] The torsion spring assembly 602 is circumferentially positioned about the center of the annular limiting shell 601, which ensures that the snap-fit ​​device 6 remains stable during the engagement process and prevents connection instability caused by the offset of the torsion spring assembly 602. This structural design not only improves the reliability of the bellows connection, but also further optimizes the convenience of construction operations.

[0031] The tail end of the torsion spring assembly 602 is fixedly connected to the limiting block 603, which facilitates a quick and stable connection. The torsion spring assembly 602 ensures that the buckle device 6 has a certain elasticity and self-locking ability when connected, while the limiting block 603 is used to fix and lock the relative position of the corrugated pipe to prevent it from loosening during construction. Through this structural design, the connection operation of the prestressed corrugated pipe becomes simple and quick, greatly improving construction efficiency, while ensuring the reliability of the connection.

[0032] The outer end face of the annular limiting plug plate 5 is provided with a limiting groove corresponding to the limiting block 603, which facilitates the precise positioning of the annular limiting shell 601 and the limiting block 603, thereby ensuring the stability and accuracy of the corrugated pipe during installation.

[0033] Working principle: When workers are carrying out construction and installation, the No. 1 corrugated pipe 1 and the No. 2 corrugated pipe 2 are screwed together through the external thread 3 and the internal thread 4. During the screwing and advancing process of the No. 1 corrugated pipe 1, the No. 1 corrugated pipe 1 drives the annular limiting plug plate 5 into the annular limiting shell 601.

[0034] When the annular limiting plug plate 5 is inserted into the annular limiting shell 601, the annular limiting plug plate 5 will push the limiting block 603 to move backward; then, under the action of the torsion spring assembly 602, the limiting block 603 will reset, and the tail end of the limiting block 603 will be locked into the limiting groove on the outer end face of the annular limiting plug plate 5, thereby ensuring the locking state of the bellows.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A prestressed corrugated pipe for bridge construction, comprising a first corrugated pipe (1) and a second corrugated pipe (2), characterized in that: The first corrugated pipe (1) has an external thread (3) on its upper end face, and the second corrugated pipe (2) has an internal thread (4) on its lower inner end face that corresponds to the external thread (3); the first corrugated pipe (1) is screwed into the second corrugated pipe (2) through the external thread (3) and the internal thread (4); the first corrugated pipe (1) has an annular limiting plug plate (5) welded to its outer wall, and the second corrugated pipe (2) has a snap-fit ​​device (6) fixedly connected to its outer wall that corresponds to the annular limiting plug plate (5).

2. The prestressed corrugated pipe for bridge construction according to claim 1, characterized in that: The buckling device (6) consists of an annular limiting shell (601), a torsion spring assembly (602), and a limiting block (603).

3. A prestressed corrugated pipe for bridge construction according to claim 2, characterized in that: The upper end face of the torsion spring assembly (602) is fixedly connected to the inner end face of the annular limiting shell (601).

4. A prestressed corrugated pipe for bridge construction according to claim 3, characterized in that: The torsion spring assembly (602) is circumferentially arranged about the center of the annular limiting shell (601).

5. A prestressed corrugated pipe for bridge construction according to claim 4, characterized in that: The tail end of the torsion spring assembly (602) is fixedly connected to the limiting block (603).

6. A prestressed corrugated pipe for bridge construction according to claim 5, characterized in that: The outer end face of the annular limiting plug plate (5) is provided with a limiting groove corresponding to the limiting block (603).

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