Power tower foundation structure

Abstract

The utility model relates to the technical field of tower foundations, and discloses an electric tower foundation structure which comprises a foundation body and a circular truncated cone fixedly connected to the upper surface of the foundation body, a plurality of bolts are evenly embedded and fixedly connected to the upper surface of the circular truncated cone, and nuts are connected to the outer portions of the bolts in a threaded mode. The upper end of the nut is located outside the bolt and is fixedly connected with a ratchet wheel, and a positioning mechanism is arranged in front of the bolt; through a matching mechanism of the ratchet wheel and the pawl, the nut is effectively prevented from rotating anticlockwise, and the problem of looseness caused by vibration or external force after fastening is solved; a limiting rod in the positioning mechanism is automatically embedded into a pawl under the action of a second spring to form double locking, so that stable meshing of the pawl and a ratchet wheel is further ensured, and accidental dislocation is avoided; the anti-settling capacity of the foundation structure is remarkably improved through the tip design of the reinforcing rod; the design enhances the stability and safety of the whole structure, and has the advantages of high practicability and high reliability.

Description

A power tower foundation structure Technical Field

[0001] This utility model relates to the field of tower foundation technology, specifically a power tower foundation structure. Background Technology

[0002] As a core component of the power grid backbone, the reliability of the foundation structure of power towers is directly related to the safe operation of transmission lines. The tower foundation is mainly used to support power towers and ensure their stability and durability under complex geological conditions (such as soft soil, frozen soil, rock strata, etc.) and extreme environments (such as strong winds, earthquakes, freeze-thaw cycles).

[0003] Chinese patent CN105178349B discloses a tower foundation that solves the technical problems of poor corrosion resistance of existing tower foundations and easy corrosion of tower materials. The tower foundation provided by the present invention includes ground piles set on the ground, a tower base plate at the bottom of the tower, and the tower base plate is fixedly connected to the ground piles by fasteners. The invention is characterized by further including a corrosion-resistant protective cap, which is cast into the ground piles, and the tower base plate and fasteners are located inside the corrosion-resistant protective cap.

[0004] In the aforementioned patents, the tower is installed and fixed only by embedding bolts inside the base plate, resulting in poor structural stability. The method of fixing the foundation by burying local piles underground is more common.

[0005] A Chinese patent discloses a fixed foundation for a communication tower (authorization announcement number CN220335946U). The patented technology includes:

[0006] By setting up a stabilizing component and controlling the rotation of the screw, the inner groove limits the transmission plate under the meshing connection between the screw and the transmission plate. The transmission plate can then drive the reinforcing plate to move in a limited position. Since the thread directions on the two ends of the screw are opposite, the two transmission plates can drive the reinforcing plates to move towards each other. The reinforcing plates are moved out of the ground pile and then inserted into the soil, which can make the ground pile more stable and the foundation more solid.

[0007] The communication tower is secured to the anchor bolts via a base plate and then tightened with nuts. By installing a support assembly, the mounting plate is inserted into the limiting groove and pushed to bring the connecting plate against the surface of the communication tower. Locking bolts are then used to secure the connecting plate and the mounting plate. The support column provides support, making the communication tower structure more stable. The limiting groove limits the mounting plate and the base block, improving the support effect of the support column.

[0008] However, it has certain drawbacks: long-term exposure to environmental vibrations, wind loads, and geological settlement can cause the nuts on the anchor bolts to loosen or even fall off, leading to a decrease in the stability of the connection between the tower base plate and the ground piles, which poses a safety hazard. Summary of the Invention

[0009] The purpose of this utility model is to provide a power tower foundation structure to solve the problems mentioned in the background art.

[0010] To achieve the above objectives, this utility model provides the following technical solution:

[0011] A power tower foundation structure includes a foundation body and a frustum fixed to the upper surface of the foundation body. A plurality of bolts are uniformly embedded and fixed to the upper surface of the frustum, and nuts are connected to the external threads of the bolts.

[0012] The upper end of the nut is fixed to a ratchet outside the bolt. A positioning mechanism is provided in front of the bolt. The positioning mechanism includes a spring, a pawl is fixed to the rear end of the spring, a positioning rod is rotatably connected to the right end of the pawl, and an L-shaped plate is fixed to the front end of the spring. A limit mechanism is provided on the upper surface of the horizontal section of the L-shaped plate.

[0013] As a further embodiment of this utility model: the limiting mechanism includes a limiting cylinder, a slider is slidably connected inside the limiting cylinder, a spring is fixedly connected to the lower surface of the slider, and a sliding rod is fixedly connected to the upper surface of the slider. A screw block is rotatably connected to the upper end of the sliding rod, and a limiting rod is fixedly connected to the upper end of the screw block.

[0014] As a further embodiment of this utility model: a plurality of reinforcing mechanisms are uniformly arranged on the lower surface of the base body, and the reinforcing mechanism includes a reinforcing sleeve, and a reinforcing rod is threadedly connected to the inside of the reinforcing sleeve.

[0015] As a further improvement of this utility model, the pawl is movably engaged with the ratchet.

[0016] As a further embodiment of this utility model: the lower end of the limiting cylinder is fixed to the upper surface of the horizontal section of the L-shaped plate, the lower end of the second spring is fixed to the lower inner surface of the limiting cylinder, the sliding rod moves through the upper surface of the limiting cylinder, the upper surface of the limiting cylinder is provided with a thread that matches the screw block, the sliding rod and the limiting rod have the same diameter, and the upper end of the limiting rod is movably embedded in the lower surface of the pawl.

[0017] As a further embodiment of this utility model: the reinforcing sleeve is embedded and fixed inside the lower surface of the base body, and the lower surface of the reinforcing sleeve is flush with the lower surface of the base body.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] This utility model effectively prevents the nut from rotating counterclockwise through the ratchet and pawl engagement mechanism, thus preventing loosening due to vibration or external force after tightening. In the positioning mechanism, the limiting rod automatically engages with the pawl under the action of spring two, forming a double lock, further ensuring the stable engagement of the pawl and ratchet and avoiding accidental dislocation. The tip design of the reinforcing rod significantly improves the anti-settlement capability of the foundation structure. This design enhances the stability and safety of the overall structure, and has the advantages of strong practicality and high reliability. Attached Figure Description

[0020] Figure 1 is a structural schematic diagram of a power tower foundation structure;

[0021] Figure 2 is an enlarged view of A in Figure 1;

[0022] Figure 3 is a schematic diagram of the positioning mechanism in a power tower foundation structure;

[0023] Figure 4 is a schematic diagram of a limiting mechanism in a power tower foundation structure;

[0024] Figure 5 is a cross-sectional view of a limiting mechanism in a power tower foundation structure;

[0025] Figure 6 is a schematic diagram of a reinforcement mechanism in a power tower foundation structure.

[0026] In the diagram: 1. Main body of the foundation; 2. Frustum; 3. Bolt; 4. Nut; 5. Ratchet; 6. Positioning mechanism; 7. Spring 1; 8. Pawl; 9. Positioning rod; 10. L-shaped plate; 11. Limiting mechanism; 12. Limiting cylinder; 13. Slider; 14. Spring 2; 15. Sliding rod; 16. Screw block; 17. Limiting rod; 18. Reinforcing mechanism; 19. Reinforcing sleeve; 20. Reinforcing rod; 21. Power tower. Detailed Implementation

[0027] Please refer to Figures 1 and 2. In this embodiment of the utility model, a power tower foundation structure includes a foundation body 1 and a frustum 2 fixed to the upper surface of the foundation body 1. A plurality of bolts 3 are uniformly embedded and fixed on the upper surface of the frustum 2, and nuts 4 are connected to the external threads of the bolts 3.

[0028] Both the main foundation 1 and the truncated cone 2 are concrete structures filled with reinforced steel bars.

[0029] Bolt 3 moves through the bottom flange of power tower 21; nut 4 is turned clockwise to lower it to fit against the upper surface of the bottom flange of power tower 21, thereby fixing power tower 21.

[0030] In Figures 1-5: A ratchet 5 is fixed to the upper end of the nut 4 outside the bolt 3. A positioning mechanism 6 is provided in front of the bolt 3. The positioning mechanism 6 includes a spring 7. A pawl 8 is fixed to the rear end of the spring 7. The pawl 8 is movably attached to the ratchet 5. A positioning rod 9 is rotatably connected to the right end of the pawl 8. An L-shaped plate 10 is fixed to the front end of the spring 7. A limit mechanism 11 is provided on the upper surface of the horizontal section of the L-shaped plate 10. The limit mechanism 11 includes a limit cylinder 12. The lower end of the limit cylinder 12 is fixed to the upper surface of the horizontal section of the L-shaped plate 10. The inner end of the limit cylinder 12... A slider 13 is slidably connected to the upper part of the limiting cylinder 12. A spring 14 is fixedly connected to the lower surface of the slider 13. The lower end of the spring 14 is fixedly connected to the lower inner surface of the limiting cylinder 12. A sliding rod 15 is fixedly connected to the upper surface of the slider 13. The sliding rod 15 moves through the upper surface of the limiting cylinder 12. A screw block 16 is rotatably connected to the upper end of the sliding rod 15. A thread matching the screw block 16 is opened inside the upper surface of the limiting cylinder 12. A limiting rod 17 is fixedly connected to the upper end of the screw block 16. The sliding rod 15 and the limiting rod 17 have the same diameter. The upper end of the limiting rod 17 is movably embedded in the lower surface of the pawl 8.

[0031] The lower end of the positioning rod 9 and the lower surface of the horizontal section of the L-shaped plate 10 are both welded to the upper surface of the bottom flange of the power tower 21;

[0032] Pawl 8 engages with ratchet 5, allowing ratchet 5 and nut 4 to rotate clockwise normally, but not counterclockwise. Pulling pawl 8 away from ratchet 5 allows ratchet 5 and nut 4 to rotate counterclockwise.

[0033] The pawl 8 engages with the ratchet 5, preventing the nut 4 from rotating unnecessarily after it is secured, thus preventing it from loosening.

[0034] The spring force of spring 7 is large enough to ensure that pawl 8 can always be in contact with ratchet 5 and will not move away from ratchet 5 due to external factors such as vibration.

[0035] The limit rod 17 is inserted into the pawl 8, so that the pawl 8 always fits against the ratchet 5.

[0036] In Figures 1 and 6: Multiple reinforcing mechanisms 18 are evenly arranged on the lower surface of the base body 1. Each reinforcing mechanism 18 includes a reinforcing sleeve 19. The reinforcing sleeve 19 is embedded and fixed inside the lower surface of the base body 1, and the lower surface of the reinforcing sleeve 19 is flush with the lower surface of the base body 1. A reinforcing rod 20 is threadedly connected inside the reinforcing sleeve 19.

[0037] The lower end of the reinforcing rod 20 is pointed, which makes it easier for the reinforcing rod 20 to be inserted into the ground, further improving the stability of the foundation body 1.

[0038] The working principle of this utility model is as follows: During installation, the reinforcing rod 20 is first screwed into the reinforcing sleeve 19 to enhance the stability of the foundation body 1. After the overall structure is hoisted into the foundation pit, the soil is backfilled. When the power tower 21 is hoisted, its bottom flange passes through the bolt 3. The operator presses down the limiting rod 17 and rotates the screw block 16 so that its threaded section is screwed into the threaded hole of the limiting cylinder 12 (at this time, the spring 14 is compressed). After pulling the pawl 8 to disengage from the ratchet 5, the nut 4 is screwed into the bolt 3. When the ratchet pawl 8 disengages from the ratchet 5, the nut 4 is screwed into the bolt 3. When pawl 8 is aligned with ratchet 5, pawl 8 is released. Under the action of spring 7, pawl 8 automatically engages with ratchet 5. Continue to rotate nut 4 clockwise until it is tightened. Finally, rotate limit rod 17 in the opposite direction to disengage screw block 16 from limit cylinder 12. Spring 14 rebounds and pushes the upper end of limit rod 17 into the positioning hole on the lower surface of pawl 8, forming a double lock. During this process, the ratchet 5-pawl 8 mechanism prevents nut 4 from loosening counterclockwise. The insertion of limit rod 17 into pawl 8 can prevent vibration from causing pawl 8 to dislodge.

[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

[0040] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A power tower foundation structure, comprising a foundation body (1) and a frustum (2) fixed to the upper surface of the foundation body (1), wherein a plurality of bolts (3) are uniformly embedded and fixed to the upper surface of the frustum (2), and nuts (4) are threaded onto the external threads of the bolts (3); characterized in that, The upper end of the nut (4) is fixed to the outside of the bolt (3) with a ratchet (5). A positioning mechanism (6) is provided in front of the bolt (3). The positioning mechanism (6) includes a spring (7). A pawl (8) is fixed to the rear end of the spring (7). A positioning rod (9) is rotatably connected to the right end of the pawl (8). An L-shaped plate (10) is fixed to the front end of the spring (7). A limit mechanism (11) is provided on the upper surface of the horizontal section of the L-shaped plate (10).

2. The power tower foundation structure according to claim 1, characterized in that, The limiting mechanism (11) includes a limiting cylinder (12), a slider (13) is slidably connected inside the limiting cylinder (12), a spring (14) is fixedly connected to the lower surface of the slider (13), and a sliding rod (15) is fixedly connected to the upper surface of the slider (13). A screw block (16) is rotatably connected to the upper end of the sliding rod (15), and a limiting rod (17) is fixedly connected to the upper end of the screw block (16).

3. The power tower foundation structure according to claim 1, characterized in that, The lower surface of the base body (1) is uniformly provided with a plurality of reinforcing mechanisms (18), each reinforcing mechanism (18) including a reinforcing sleeve (19), and a reinforcing rod (20) is threadedly connected inside the reinforcing sleeve (19).

4. The power tower foundation structure according to claim 1, characterized in that, The pawl (8) is movably attached to the ratchet (5).

5. A power tower foundation structure according to claim 2, characterized in that, The lower end of the limiting cylinder (12) is fixed to the upper surface of the horizontal section of the L-shaped plate (10), the lower end of the second spring (14) is fixed to the lower inner surface of the limiting cylinder (12), the sliding rod (15) moves through the upper surface of the limiting cylinder (12), the upper surface of the limiting cylinder (12) is provided with a thread that matches the screw block (16), the sliding rod (15) and the limiting rod (17) have the same diameter, and the upper end of the limiting rod (17) is movably embedded in the lower surface of the pawl (8).

6. A power tower foundation structure according to claim 3, characterized in that, The reinforcing sleeve (19) is embedded and fixed inside the lower surface of the base body (1), and the lower surface of the reinforcing sleeve (19) is flush with the lower surface of the base body (1).

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