Flange-connected concrete pole
By using positioning rods and pre-embedded components in the flange connection design, the problem of flange misalignment was solved, achieving efficient and stable concrete pole connection, and improving connection efficiency and pole service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGSHA JINXIANG CEMENT PROD CO LTD
- Filing Date
- 2025-06-06
- Publication Date
- 2026-05-15
AI Technical Summary
When connecting concrete poles via flanges, it is impossible to precisely align the two flanges, which may lead to misalignment after pre-connection, resulting in bolt holes not being aligned and affecting connection efficiency.
A positioning rod is installed on the lower connecting flange and inserted into the positioning hole of the upper connecting flange. The rod is guided by rounded corners and guide rods to ensure precise docking. Combined with pre-embedded components and buffer layers, the connection stability and convenience are improved.
This technology enables rapid bolt fixing after connection, preventing misalignment, improving the efficiency and stability of concrete pole connections, and extending the service life of the poles.
Smart Images

Figure CN224244535U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of concrete pole manufacturing and connection technology, specifically a flange-connected concrete pole. Background Technology
[0002] Concrete poles are widely used in power and telecommunications sectors due to their durability and wind pressure resistance. Traditional poles are mostly constructed using monolithic casting or segmented welding. Monolithic casting presents transportation difficulties, while segmented welding suffers from complex construction and the connection strength depends on welding quality. In recent years, flange connection technology has been increasingly applied to the pole industry, allowing for the convenient connection of two or more sections of concrete poles.
[0003] Currently, when connecting concrete poles using flanges, it is impossible to accurately position the two flanges. After pre-connection, the two flanges may shift or misalign due to wind force and the instability of hoisting tools, resulting in misalignment of bolt holes. Consequently, when using fixing bolts to fix the two flanges, it is necessary to constantly adjust the position between the two flanges, which affects the work efficiency of connecting concrete poles using flanges. Utility Model Content
[0004] To address the shortcomings of existing technologies, this application provides a flange-connected concrete pole that allows for precise positioning of the upper and lower flanges during connection, preventing misalignment of bolt holes due to flange displacement after pre-connection. It also facilitates quick and easy fixing with bolts after flange connection, improving the efficiency of connecting concrete poles using flanges. This solution addresses the current limitations of flange-connected concrete poles, such as the inability to accurately position the flanges, potential misalignment of bolt holes due to wind and unstable lifting equipment after pre-connection, and the need for constant adjustment of flange positions during bolt fixing, all of which negatively impact efficiency.
[0005] To achieve the aforementioned goal of positioning the upper and lower flanges during the connection process, preventing misalignment of bolt holes due to flange displacement after pre-connection, and facilitating quick and easy fixing with bolts after flange connection, thereby improving the efficiency of connecting concrete poles using flanges, this application provides the following technical solution: A flange-connected concrete pole, comprising a pole with a reinforcing cage inside, an upper pole body and a lower pole body, both ends of which have embedded components. Both the upper and lower pole bodies are connected to connecting flanges via these embedded components. Each connecting flange includes a second connecting plate. Multiple positioning rods are arranged in a circular array on the top of the lower connecting plate. Multiple positioning holes corresponding to the positions of the positioning rods are opened on the upper connecting plate of the connecting flange. The positioning rods are inserted into the positioning holes. The second connecting plate of the upper connecting flange and the second connecting plate of the lower connecting flange are fixedly connected by bolts.
[0006] The above solution allows for the positioning of the two flanges by inserting a positioning rod located on the lower flange into a positioning hole on the upper flange. This fixes the position of the two flanges during the connection process, preventing misalignment of bolt holes due to flange misalignment after pre-connection. It also facilitates quick and easy fixing with bolts after flange connection, improving the efficiency of connecting concrete poles using flanges.
[0007] Furthermore, the bottom edge of the inner wall of the positioning hole is rounded.
[0008] The above solution allows the rounded corners to guide the positioning rod as it is inserted into the positioning hole, making the insertion smoother and improving the accuracy and convenience of connecting the two flanges.
[0009] Furthermore, the pre-embedded component includes a positioning ring, and the ends of the longitudinal bars of the reinforcing cage are provided with threaded rods. The threaded rods are inserted into the mounting holes of the positioning ring, and the positioning ring is fixedly installed at the end of the reinforcing cage by means of a nut and the threaded rods.
[0010] The above scheme ensures that the positioning ring is securely connected to the longitudinal reinforcement of the steel cage via a threaded rod and nut, thus guaranteeing a strong connection between the positioning ring and the steel cage. This allows the pre-embedded components to be stably embedded at the ends of the upper and lower rods, providing a solid foundation for the subsequent installation of the connecting flange.
[0011] Furthermore, the end face of the positioning ring away from the reinforcing cage is provided with a reinforcing ring by multiple fixing rods, and the end face of the reinforcing ring away from the fixing rods is provided with a connecting ring. The outer and inner surfaces of the reinforcing ring are provided with anti-slip textures.
[0012] The above solution can increase the friction between the reinforcing ring and the surrounding concrete, thereby improving the strength of the connection between the embedded components and the pole.
[0013] Furthermore, multiple fixing rods are arranged in a ring array on the end face of the positioning ring, and adjacent fixing rods are spaced apart by threaded rods.
[0014] With the above scheme, multiple fixing rods are arranged in a ring array, which can make the force on the reinforcing ring evenly distributed and improve the stability of the pre-embedded components. Adjacent fixing rods are separated by threaded rods, which provides good operating space when fixing the positioning ring and the threaded rods with nuts.
[0015] Furthermore, the edge of the connecting ring is fixedly connected to the first connecting plate of the connecting flange by fixing bolts, and the outer surface of the first connecting plate is fixedly connected to the inner wall of the second connecting plate by an extension ring, the extension ring extending away from the corresponding pre-embedded component.
[0016] Through the above scheme, the first connecting plate of the connecting ring and the connecting flange are connected by fixing bolts, which realizes the reliable fixation of the pre-embedded component and the connecting flange, so that the connecting flange can be firmly installed at the end of the pole. The extension ring avoids the influence of the fixing bolts at the joint of the first connecting plate and the connecting ring when the upper and lower connecting flanges are connected, so that the two connecting flanges can still be smoothly fitted and connected to each other after being installed on the pre-embedded component by fixing bolts.
[0017] Furthermore, a guide rod is provided at the top of the positioning rod, the outer surface of the middle part of the guide rod is a tapered outer surface with a diameter that gradually increases from top to bottom, and the top of the guide rod is hemispherical.
[0018] The above design, with its tapered outer surface and hemispherical top, provides better guidance when the positioning rod is inserted into the positioning hole, reducing collisions and friction between the positioning rod and the positioning hole, making the positioning process smoother, and further improving the accuracy and convenience of connecting the two flanges.
[0019] Furthermore, a buffer layer is provided between the upper and lower connecting flanges, the buffer layer is located between the upper and lower second connecting discs, and the buffer layer is made of rubber.
[0020] Through the above scheme, the buffer layer can play a role in buffering and shock absorption. When the concrete pole is subjected to external force, the buffer layer can absorb some of the energy, reduce the impact force between the upper and lower connecting flanges, reduce the risk of damage to the connecting flanges due to excessive force, and extend the service life of the concrete pole.
[0021] Compared with the prior art, the technical solution of this application has the following beneficial effects:
[0022] This type of flange-connected concrete pole uses a positioning rod on the lower flange that is inserted into a positioning hole on the upper flange to fix the position between the two flanges. This allows for precise positioning of the two flanges during connection, preventing misalignment of bolt holes due to flange misalignment after pre-connection. It also facilitates quick and easy fixing with bolts after flange connection, improving the efficiency of connecting concrete poles using flanges. Attached Figure Description
[0023] Figure 1 This is a three-dimensional structural diagram of this application;
[0024] Figure 2 This is an exploded structural diagram of the upper and lower connecting flanges of this application;
[0025] Figure 3 This is a schematic diagram of the end section structure of the upper rod in this application;
[0026] Figure 4 This is a schematic diagram showing the location of the fillet in this application;
[0027] Figure 5 This is a cross-sectional schematic diagram of a partial structure of this application.
[0028] In the picture:
[0029] 1. Pole; 101. Upper pole body; 102. Lower pole body; 2. Embedded components; 201. Positioning ring; 202. Fixing rod; 203. Reinforcing ring; 204. Connecting ring; 3. Connecting flange; 301. First connecting plate; 302. Extension ring; 303. Second connecting plate; 4. Positioning rod; 5. Positioning hole; 6. Rounded corner; 7. Reinforcing cage; 8. Threaded rod; 9. Anti-slip texture; 10. Buffer layer; 11. Guide rod. Detailed Implementation
[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0031] Please see Figure 1 , Figure 2 and Figure 5 This embodiment of a flange-connected concrete pole includes a pole 1 with a reinforcing cage 7 inside. The pole 1 includes an upper pole body 101 and a lower pole body 102. Pre-embedded components 2 are embedded at the ends of both the upper pole body 101 and the lower pole body 102. Both the upper pole body 101 and the lower pole body 102 are connected to a connecting flange 3 through the pre-embedded components 2. The connecting flange 3 includes a second connecting plate 303. Multiple positioning rods 4 are provided on the top of the second connecting plate 303 of the lower connecting flange 3. The multiple positioning rods 4 are arranged in a circular array on the top of the second connecting plate 303 of the lower connecting flange 3. Multiple positioning holes 5 corresponding to the positions of the positioning rods 4 are opened on the second connecting plate 303 of the upper connecting flange 3. The positioning rods 4 are inserted into the positioning holes 5. The second connecting plate 303 of the upper connecting flange 3 and the second connecting plate 303 of the lower connecting flange 3 are fixedly connected by fixing bolts.
[0032] Please see Figure 4 and Figure 5 The bottom edge of the inner wall of the positioning hole 5 is provided with a rounded corner 6. The rounded corner 6 can guide the positioning rod 4 when it is inserted into the positioning hole 5, so that the positioning rod 4 can be inserted more smoothly, improving the accuracy and convenience of the two connecting flanges 3 when they are connected.
[0033] Please see Figure 1 , Figure 3 and Figure 5 The pre-embedded component 2 includes a positioning ring 201. The ends of the longitudinal bars of the reinforcing cage 7 are provided with threaded rods 8, which are inserted into the mounting holes of the positioning ring 201. The positioning ring 201 is fixedly set at the end of the reinforcing cage 7 by a nut and the threaded rod 8. The positioning ring 201 is fixedly connected to the longitudinal bars of the reinforcing cage 7 by the threaded rod 8 and the nut, which can ensure that the connection between the positioning ring 201 and the reinforcing cage 7 is firm, so that the pre-embedded component 2 can be stably pre-embedded at the ends of the upper rod body 101 and the lower rod body 102, providing a solid foundation for the subsequent installation of the connecting flange 3.
[0034] Please see Figure 3 and Figure 5The end face of the positioning ring 201 away from the steel cage 7 is provided with a reinforcing ring 203 through multiple fixing rods 202. The end face of the reinforcing ring 203 away from the fixing rods 202 is provided with a connecting ring 204. Anti-slip textures 9 are provided on the outer and inner surfaces of the reinforcing ring 203. The anti-slip textures 9 can increase the friction between the reinforcing ring 203 and the surrounding concrete, and improve the strength of the connection between the embedded component 2 and the pole 1.
[0035] Please see Figure 3 and Figure 5 Multiple fixing rods 202 are arranged in a ring array on the end face of the positioning ring 201. Adjacent fixing rods 202 are separated by threaded rods 8. The ring array of multiple fixing rods 202 can make the force on the reinforcing ring 203 evenly distributed and improve the stability of the pre-embedded component 2. The separation of adjacent fixing rods 202 by threaded rods 8 provides good operating space when fixing the positioning ring 201 and the threaded rods 8 with nuts.
[0036] Please see Figure 1 , Figure 2 and Figure 5 The edge of the connecting ring 204 is fixedly connected to the first connecting plate 301 of the connecting flange 3 by fixing bolts. The outer surface of the first connecting plate 301 is fixedly connected to the inner wall of the second connecting plate 303 by the extension ring 302. The extension ring 302 extends away from the corresponding pre-embedded component 2. The connecting ring 204 and the first connecting plate 301 of the connecting flange 3 are connected by fixing bolts, which realizes the reliable fixing of the pre-embedded component 2 and the connecting flange 3, so that the connecting flange 3 can be stably installed at the end of the pole 1. The setting of the extension ring 302 avoids the influence of the fixing bolts at the joint of the first connecting plate 301 and the connecting ring 204 when the two connecting flanges 3 are connected, so that the two connecting flanges 3 can still be smoothly fitted and connected after being installed on the pre-embedded component 2 by fixing bolts.
[0037] Please see Figure 1 , Figure 2 and Figure 5 The top of the positioning rod 4 is provided with a guide rod 11. The outer surface of the middle part of the guide rod 11 is a tapered outer surface with a diameter that gradually increases from top to bottom. The top of the guide rod 11 is hemispherical. The tapered outer surface and hemispherical top design of the guide rod 11 can play a better guiding role when the positioning rod 4 is inserted into the positioning hole 5, reduce the collision and friction between the positioning rod 4 and the positioning hole 5, make the positioning process smoother, and further improve the accuracy and convenience of the docking of the two connecting flanges 3.
[0038] Please see Figure 1 and Figure 5A buffer layer 10 is provided between the upper and lower connecting flanges 3. The buffer layer 10 is located between the upper and lower second connecting discs 303. The buffer layer 10 is made of rubber. The buffer layer 10 can play a role in buffering and shock absorption. When the concrete pole is subjected to external force, the buffer layer 10 can absorb some energy, reduce the impact force between the upper and lower connecting flanges 3, reduce the risk of damage to the connecting flanges 3 due to excessive force, and extend the service life of the concrete pole.
[0039] In this embodiment, a flange-connected concrete pole uses a positioning rod 4 on the lower connecting flange 3, which is inserted into a positioning hole 5 on the upper connecting flange 3. This fixes the position between the two connecting flanges 3, allowing for positioning of the two flanges during connection. This avoids misalignment of the bolt holes due to displacement of the two flanges after pre-connection, and facilitates quick and easy fixing with bolts after the two flanges are connected. This improves the efficiency of connecting concrete poles using flanges.
[0040] The working principle of the above embodiment is as follows: The positioning ring 201 is fixed to the threaded rod 8 using a nut to secure the reinforcing cage 7 and the embedded component 2; the pole 1 is poured to complete the pre-embedding of the embedded component 2; the first connecting plates 301 of the two connecting flanges 3 are respectively fixedly connected to the connecting rings 204 of the embedded component 2 on the upper pole body 101 and the lower pole body 102 using fixing bolts to secure the connecting flanges 3 and the embedded component 2; the upper pole body 101 is hoisted, and the lower pole body 102 is placed on the upper pole body 101. Below, the positioning hole 5 on the connecting flange 3 of the upper pole body 101 is gradually fitted onto the outer surface of the positioning rod 4 located on the lower connecting flange 3. The positioning rod 4 and the positioning hole 5 are precisely aligned by the rounded corner 6 and the guide rod 11. The two second connecting discs 303 of the upper and lower connecting flanges 3 are fixedly connected by fixing bolts, thereby fixing the upper and lower connecting flanges 3 together, and fixing the upper pole body 101 and the lower pole body 102 together, thus completing the assembly of the pole 1.
[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0042] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A flange-connected concrete pole, comprising a pole (1), characterized in that: The pole (1) is equipped with a steel cage (7) inside. The pole (1) includes an upper pole body (101) and a lower pole body (102). Pre-embedded components (2) are embedded at the ends of both the upper pole body (101) and the lower pole body (102). Both the upper pole body (101) and the lower pole body (102) are connected to a connecting flange (3) through the pre-embedded components (2). The connecting flange (3) includes a second connecting plate (303). The top of the second connecting plate (303) of the lower connecting flange (3) is provided with multiple A number of positioning rods (4) are arranged in a ring array on the top of the second connecting plate (303) located below. The second connecting plate (303) of the connecting flange (3) located above has a number of positioning holes (5) corresponding to the positions of the positioning rods (4). The positioning rods (4) are inserted into the positioning holes (5). The second connecting plate (303) of the connecting flange (3) located above and the second connecting plate (303) of the connecting flange (3) located below are fixedly connected by fixing bolts.
2. A flange-connected concrete pole according to claim 1, characterized in that: The bottom edge of the inner wall of the positioning hole (5) is provided with a rounded corner (6).
3. A concrete pole with flange connection according to claim 1, characterized in that: The pre-embedded component (2) includes a positioning ring (201). The ends of the longitudinal bars of the steel cage (7) are provided with threaded rods (8). The threaded rods (8) are inserted into the mounting holes of the positioning ring (201). The positioning ring (201) is fixedly installed at the end of the steel cage (7) by means of a nut and the threaded rods (8).
4. A flange-connected concrete pole according to claim 3, characterized in that: The end face of the positioning ring (201) away from the steel cage (7) is provided with a reinforcing ring (203) by multiple fixing rods (202). The end face of the reinforcing ring (203) away from the fixing rods (202) is provided with a connecting ring (204). Anti-slip textures (9) are provided on the outer and inner surfaces of the reinforcing ring (203).
5. A concrete pole with flange connection according to claim 4, characterized in that: Multiple fixing rods (202) are arranged in a ring array on the end face of the positioning ring (201), and adjacent fixing rods (202) are separated by threaded rods (8).
6. A flange-connected concrete pole according to claim 4, characterized in that: The edge of the connecting ring (204) is fixedly connected to the first connecting plate (301) of the connecting flange (3) by fixing bolts. The outer surface of the first connecting plate (301) is fixedly connected to the inner wall of the second connecting plate (303) by an extension ring (302). The extension ring (302) extends away from the corresponding pre-embedded component (2).
7. A flange-connected concrete pole according to claim 1, characterized in that: The top of the positioning rod (4) is provided with a guide rod (11), the outer surface of the middle part of the guide rod (11) is a tapered outer surface with a diameter that gradually increases from top to bottom, and the top of the guide rod (11) is hemispherical.
8. A flange-connected concrete pole according to claim 1, characterized in that: A buffer layer (10) is provided between the upper and lower connecting flanges (3). The buffer layer (10) is located between the upper and lower second connecting discs (303). The buffer layer (10) is made of rubber.