Prefabricated concrete component with positioning structure
By introducing pre-embedded steel bars, positioning sleeves, and a combination of T-slots and T-bolts into precast concrete components, the problem of positional deviation during hoisting and positioning of precast concrete components was solved, achieving efficient and accurate installation and connection, improving construction quality and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGXI XUSEN NEW MATERIAL TECHNOLOGY CO LTD
- Filing Date
- 2025-06-10
- Publication Date
- 2026-04-17
AI Technical Summary
During the hoisting and placement of precast concrete components, horizontal or vertical positional deviations are prone to occur, requiring construction workers to invest extra effort in correction work.
The precast concrete components with positioning structures are adopted, including a combination design of embedded steel bars, positioning sleeves, T-slots and T-bolts. Through the nesting and cooperation of the steel bar positioning holes and the embedded steel bars, the circumferential engagement of the positioning block and the positioning sleeve, combined with the 360° adjustable connection of the T-slot and the T-bolt, the accurate positioning of the pipe fittings is ensured.
This method enables accurate alignment of precast concrete pipe components during installation, reduces positional deviations, improves construction efficiency, ensures project quality, and reduces potential quality risks and cost increases caused by positional deviations.
Smart Images

Figure CN224135360U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of precast concrete components, specifically a precast concrete component with a positioning structure. Background Technology
[0002] Precast concrete components are concrete structural parts that are prefabricated in a factory or specialized prefabrication site and then transported to the construction site for installation and assembly. They are an important part of modern industrialized construction production methods, aiming to improve construction efficiency, ensure project quality, reduce construction costs, and minimize the environmental impact of on-site wet work.
[0003] For example, an existing Chinese patent (CN220228153U) discloses a high-density precast concrete pipe, comprising: an inner pipe, an outer pipe, and several connecting steel bars. The outer pipe is sleeved on the outer surface of the inner pipe's side wall, and the several connecting steel bars are evenly distributed on the outer surface of the inner pipe's side wall and connected to the inner surface of the outer pipe's side wall. This invention's high-density precast concrete pipe effectively increases the wall thickness of the precast concrete pipe by setting up interlocking inner and outer pipes, thereby effectively improving the density of the precast concrete pipe. Furthermore, the inner and outer pipes can be poured in stages, greatly reducing the production difficulty of the high-density precast concrete pipe and thus improving the product yield. The several connecting steel bars tightly connect the inner and outer pipes, effectively improving the connection tightness between the inner and outer pipes, thereby further enhancing the density of the precast concrete pipe.
[0004] In the actual application of precast concrete pipe components, some components have the problem of missing self-positioning structure, which can easily cause horizontal or vertical positional deviations during hoisting and positioning, forcing construction personnel to devote extra effort to correction work. Utility Model Content
[0005] The purpose of this invention is to provide a precast concrete component with a positioning structure to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a precast concrete component with a positioning structure, comprising a precast concrete pipe and embedded reinforcing bars. The precast concrete pipe has embedded reinforcing bars inside, which protrude from both ends of the precast concrete pipe. One end of the precast concrete pipe has a connecting pipe. The connecting pipe has a reinforcing bar positioning hole located outside the embedded reinforcing bars inside. The outer wall of the connecting pipe has a connecting flange. One side of the connecting flange has a T-slot. A T-bolt is installed in the T-slot. A positioning sleeve is installed outside the T-bolt. The outer wall of the precast concrete pipe has a positioning block, and the outer wall of the positioning block matches the inner wall of the positioning sleeve.
[0007] Furthermore, the outer wall of the precast concrete pipe is provided with a positioning flange, and the positioning flange has an installation hole.
[0008] Furthermore, the T-slot is annular, and one side of the T-slot has an opening for the T-bolt to enter and exit.
[0009] Furthermore, a connecting seat is provided on the outside of the T-bolt, one end of which is fixedly connected to the positioning sleeve, and a clamping nut is provided on the outside of the T-bolt, one end of which abuts against the connecting seat.
[0010] Furthermore, a through hole is provided inside the connector on the outside of the T-bolt's screw.
[0011] Furthermore, there are multiple positioning blocks, which are evenly arranged circumferentially on the outer wall of the precast concrete pipe, and multiple T-bolts are also provided.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] This invention, through the design of precast concrete pipe fittings, embedded reinforcing bars, and positioning sleeves, achieves axial alignment of the pipe fittings during installation. The nested fit between the positioning holes and embedded reinforcing bars ensures proper alignment; the circumferential engagement of the positioning block and positioning sleeve eliminates rotational deviation around the pipe fitting's axis; and the 360° adjustable connection between the T-slot and T-bolt allows for flexible fine-tuning and locking on-site, avoiding the limitations of traditional single-point bolt positioning. These positioning structures work together to ensure accurate alignment of the precast concrete pipe fittings during installation, reducing horizontal or vertical positional deviations and eliminating the need for extra effort from construction workers to correct misalignment. This not only improves construction efficiency but also ensures project quality and reduces potential quality issues and cost increases caused by positional deviations.
[0014] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description
[0015] Figure 1 This is a perspective view of a precast concrete component with a positioning structure according to the present invention.
[0016] Figure 2 for Figure 1 Enlarged structural diagram at point A in the middle;
[0017] Figure 3 This is a front sectional view of a precast concrete component with a positioning structure according to the present invention.
[0018] Figure 4This is a perspective view of a precast concrete component with a positioning structure according to this utility model.
[0019] In the diagram: 1. Precast concrete pipe fitting; 2. Embedded steel bar; 3. Positioning flange; 4. Mounting hole; 5. Connecting pipe; 6. Connecting flange; 7. T-bolt; 8. Connecting seat; 9. Positioning sleeve; 10. Positioning block; 11. Compression nut; 12. T-slot; 13. Steel bar positioning hole. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0021] Please see Figures 1-4 This utility model provides a technical solution: a precast concrete component with a positioning structure, including a precast concrete pipe 1 and embedded reinforcing bars 2. The precast concrete pipe 1 has embedded reinforcing bars 2 inside, and serves as a basic component, bearing the main functions of the pipeline system. The design of the embedded reinforcing bars 2 enhances the structural strength and provides stable support for subsequent connections. The embedded reinforcing bars 2 protrude from both ends of the precast concrete pipe 1, facilitating connection with other components. The protruding design of the embedded reinforcing bars 2 allows for more accurate positioning during connection and enhances the strength of the connection.
[0022] One end of the precast concrete pipe fitting 1 is equipped with a connecting pipe 5. Inside the connecting pipe 5, outside the embedded reinforcing steel bar 2, there is a steel bar positioning hole 13. As a connecting component between precast concrete pipe fittings 1, the steel bar positioning hole 13 ensures accurate alignment of the embedded reinforcing steel bar 2 during connection, reducing positional deviation. The outer wall of the connecting pipe 5 is equipped with a connecting flange 6. One side of the connecting flange 6 has a T-slot 12, within which a T-bolt 7 is installed. Outside the T-bolt 7, there is a positioning sleeve 9. The outer wall of the precast concrete pipe fitting 1 is equipped with a positioning block 10, whose outer wall fits into the inner wall of the positioning sleeve 9. The positioning sleeve 9 and the positioning block 10 on the outer wall of the precast concrete pipe fitting 1 cooperate to achieve circumferential positioning between the pipe fittings, preventing rotation or misalignment during connection.
[0023] The precast concrete pipe fitting 1 has a positioning flange 3 on its outer wall, and an installation hole 4 is provided inside the positioning flange 3. The positioning flange 3 provides an additional positioning and fixing point for the precast concrete pipe fitting 1, while the installation hole 4 facilitates the connection of the pipe fitting to other structures or equipment by means of fasteners such as bolts, thereby enhancing the stability of the overall structure.
[0024] The T-slot 12 is annular, with an opening on one side for the T-bolt 7 to enter and exit. The annular shape of the T-slot 12 facilitates the insertion and fixing of the T-bolt 7 at any angle, providing a flexible installation method. The T-bolt 7 connects to the connecting flange 6 via the T-slot 12, providing stable support for the positioning sleeve 9. The opening design facilitates the installation and removal of the T-bolt 7, improving construction efficiency and simplifying subsequent maintenance and repair.
[0025] A connecting seat 8 is provided on the outside of the T-bolt 7. One end of the connecting seat 8 is fixedly connected to the positioning sleeve 9. This fixed connection ensures the stability of the positioning sleeve 9 during installation and avoids positioning deviations caused by loosening or displacement. A clamping nut 11 is provided on the outside of the T-bolt 7. One end of the clamping nut 11 abuts against the connecting seat 8. The connecting seat 8 fixes the T-bolt 7 and the positioning sleeve 9, ensuring the stability of their relative positions and facilitating precise control of the installation position of the precast concrete pipe fitting 1. The clamping nut 11, through tightening action, presses the connecting seat 8 and the positioning sleeve 9 onto the connecting flange 6, enhancing the tightness and sealing of the connection.
[0026] The connecting seat 8 has a through hole located on the outside of the T-bolt 7. The through hole design allows the T-bolt 7 to pass through the connecting seat 8 and engage with the clamping nut 11, thus achieving the bolt's tightening function.
[0027] Multiple positioning blocks 10 are arranged circumferentially and evenly on the outer wall of the precast concrete pipe fitting 1, and multiple T-bolts 7 are also provided. The circumferential arrangement of the positioning blocks 10 provides multiple positioning points for the positioning sleeve 9, enhancing the accuracy and stability of positioning. The combined action of the multiple T-bolts 7 ensures the stability and reliability of the positioning sleeve 9 in all directions, further improving installation accuracy.
[0028] By incorporating precast concrete pipe fittings, embedded reinforcing bars, and positioning sleeves, the system ensures axial alignment of the pipe fittings during installation. This is achieved through the nesting fit between the positioning holes 13 and the embedded reinforcing bars 2. The circumferential engagement of the positioning block 10 and the positioning sleeve 9 eliminates rotational deviations around the pipe fitting's axis. The 360° adjustable connection between the T-slot 12 and the T-bolt 7 allows for flexible fine-tuning and locking on-site, avoiding the limitations of traditional single-point bolt positioning. These positioning structures work together to ensure accurate alignment of the precast concrete pipe fittings 1 during installation, reducing horizontal or vertical positional deviations and eliminating the need for additional effort from construction workers to correct deviations. This not only improves construction efficiency but also ensures project quality and reduces potential quality issues and cost increases caused by positional deviations.
[0029] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
Claims
1. A concrete precast element with positioning structure, comprising a concrete precast pipe (1) and embedded reinforcement (2), characterized in that: The precast concrete pipe fitting (1) is provided with embedded steel bars (2) inside. The embedded steel bars (2) protrude from both ends of the precast concrete pipe fitting (1). One end of the precast concrete pipe fitting (1) is provided with a connecting pipe (5). The connecting pipe (5) is provided with a steel bar positioning hole (13) located outside the embedded steel bars (2). The outer wall of the connecting pipe (5) is provided with a connecting flange (6). One side of the connecting flange (6) is provided with a T-groove (12). The T-groove (12) is provided with a T-bolt (7). The outer side of the T-bolt (7) is provided with a positioning sleeve (9). The outer wall of the precast concrete pipe fitting (1) is provided with a positioning block (10). The outer wall of the positioning block (10) matches the inner wall of the positioning sleeve (9).
2. A precast concrete element with positioning structure according to claim 1, characterized in that: The precast concrete pipe fitting (1) has a positioning flange (3) on its outer wall, and an installation hole (4) is provided inside the positioning flange (3).
3. A precast concrete member with positioning structure according to claim 1, characterized in that: The T-slot (12) is annular, and one side of the T-slot (12) has an opening for the T-bolt (7) to enter and exit.
4. A precast concrete member with positioning structure according to claim 1, characterized in that: The T-bolt (7) is provided with a connecting seat (8) on the outside. One end of the connecting seat (8) is fixedly connected to the positioning sleeve (9). The T-bolt (7) is provided with a clamping nut (11) on the outside. One end of the clamping nut (11) abuts against the connecting seat (8).
5. A concrete precast element with positioning structure according to claim 4, characterized in that: The connecting seat (8) has a through hole located on the outside of the screw of the T-bolt (7).
6. A precast concrete member with positioning structure according to claim 1, characterized in that: There are multiple positioning blocks (10), and the multiple positioning blocks (10) are evenly arranged circumferentially on the outer wall of the precast concrete pipe (1). There are also multiple T-bolts (7).
Citation Information
Patent Citations
High-compactness precast concrete pipe
CN220228153U