Foundation fixing device of communication tower

Abstract

The application relates to the technical field of communication towers, in particular to a foundation fixing device for a communication tower, which comprises a tower foundation, a bottom pile and a plurality of screw rods circumferentially distributed on the tower foundation, a connecting flange is fixedly connected to the bottom end of the outer wall of the bottom pile, a lower nut is threadedly connected to each of the screw rods, when being connected and fixed, the holes on the connecting flange are hoisted and inserted on the screw rods, then the upper nut is screwed on the screw rods, so that the connecting flange is locked on the screw rods, a cylinder is arranged on the outer wall of the bottom pile, a shielding structure for shielding the upper nut is arranged on the cylinder, an internal thread groove is arranged at the bottom end of the inner side of the cylinder, a circular cavity is arranged in the connecting flange, and a circular ring is rotatably connected to the inner side of the circular cavity. Through the arrangement of the above structure, the tower foundation and the connecting flange can play the role of a pouring mold during secondary pouring, materials need not be cut, time and labor are saved, and the normal installation of the bottom pile is not affected.

Description

Technical Field

[0001] This invention relates to the field of communication tower technology, and in particular to a foundation fixing device for communication towers. Background Technology

[0002] A communication tower is a tower assembled from steel structures that can effectively increase the height of communication antennas. It consists of steel components such as the tower body, platform, lightning rod, ladder, and antenna support, and is treated with hot-dip galvanizing for corrosion protection. It is mainly used for the transmission and transmission of microwave, ultra-short wave, and wireless network signals, so communication towers are very important in communication network systems.

[0003] The prior art discloses a steel pipe pile foundation structure for a steel tower frame. By setting up an automatic spreading mechanism, the spreading rod can be automatically driven to open outward during the laying of the pipe, thereby contacting the side wall of the foundation pit and forming a supporting effect on the steel pipe pile. This makes it less likely for the steel pipe pile to tilt after placement, ensuring that the steel pipe pile is erected evenly, which is conducive to the subsequent construction of the steel tower. Furthermore, by setting up reinforcement components, the problems of low bearing capacity and poor stability of existing steel pipe pile foundations can be solved.

[0004] Although it can improve the support effect of communication towers, there are still some defects in actual use. After the communication tower foundation fixing device is leveled, the gap between the fixing device and the foundation is filled with concrete. Its main purpose is to prevent the lower nut from loosening and the bolt from corroding, and at the same time to make the tower foundation and tower body a tightly connected whole, so that the force transmission is clearer and closer to the theoretical design, and to reduce the pull-out force on the upper locking nut. However, during the secondary pouring, it is necessary to cut the mold and fix it on the foundation fixing device before pouring can be carried out. This is not only time-consuming and labor-intensive, but also greatly reduces the construction efficiency of the device.

[0005] Therefore, a foundation fixing device for communication towers is proposed to solve the above problems. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of the prior art by proposing a foundation fixing device for communication towers.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a foundation fixing device for a communication tower, comprising a tower foundation and a bottom pile, and a plurality of screw rods distributed circumferentially on the tower foundation. A connecting flange is fixedly connected to the bottom end of the outer wall of the bottom pile, and a lower nut is threadedly connected to each of the screw rods. When connecting and fixing, the hole on the connecting flange is hoisted and inserted into the screw rod, and then the upper nut is screwed into the screw rod, thereby locking the connecting flange onto the screw rod.

[0008] The outer wall of the bottom pile is provided with a cylinder, and the cylinder is provided with a covering structure for covering the upper nut. The bottom inner side of the cylinder is provided with an internal thread groove. The connecting flange is provided with a circular cavity. A circular ring is rotatably connected to the inner side of the circular cavity. The outer wall of the connecting flange is provided with four expansion grooves at equal intervals. An external thread block is slidably connected to the inner side of each of the four expansion grooves. A fixing seat is fixedly connected to the side of the external thread block that is close to each other. The side wall of the fixing seat is provided through the inner side of the circular cavity. A roller is rotatably connected to the inner side of the fixing seat. The outer wall of the roller contacts the outer wall of the circular ring. A pair of upper springs are fixedly connected between the side of the external thread block that is close to each other and the inner side of the expansion groove. The outer wall of the circular ring and the side next to the roller are provided with recessed grooves. The side of the grooves close to the roller is inclined.

[0009] The bottom pile is provided with a casting cylinder on its inner side. The ring is provided with a fixing mechanism for fixing the position of the casting cylinder. The top of the connecting flange is provided with an arc groove. The top of the ring and located inside the arc groove are fixedly connected to a top plate. The top plate is provided with a limiting mechanism for fixing the position of the ring.

[0010] In the above technical solution, the fixing mechanism further includes four fixing rods located inside the bottom pile, and the side walls of the four fixing rods are slidably connected to the circular cavity. A round rod is fixedly connected to the top of each fixing rod. An adjustment groove is opened at the bottom of the ring and at the position corresponding to the round rod. The round rod is inserted into the inner side of the adjustment groove, and the radius distance between the two ends of the adjustment groove gradually increases. The casting cylinder is located above the fixing rods.

[0011] In the above technical solution, the limiting mechanism further includes a bolt, which is threaded through and connected to the side wall of the top plate. The outer wall of the bottom pile and above both ends of the arc groove are provided with a fixing thread groove, and the end of the bolt is threadedly connected to the inside of one of the fixing thread grooves.

[0012] In the above technical solution, a plastic film is further bonded to the inner side of the cylinder to cover the internal thread groove, and several push plates are fixedly connected at equal intervals to the outer wall of the cylinder.

[0013] In the above technical solution, the top of the connecting flange is provided with a pouring port, and an upper sealing block is threadedly connected to the inner side of the pouring port.

[0014] In the above technical solution, both the outer walls of the cylinder and the casting cylinder are provided with drainage pipe inlets, and a lower sealing block is threadedly connected to the inner side of the drainage pipe inlet on the cylinder.

[0015] In the above technical solution, the shielding structure further includes a top ring, which is sleeved on the outer wall of the bottom pile. A limiting ring for limiting the position of the top ring is fixedly connected to the top of the inner side of the cylinder. Three retaining rings for limiting the position of the top of the top ring are rotatably connected to the top of the cylinder, and the three retaining rings are interference-fitted with the top ring. Three drainage outlets are opened at the top of the cylinder. A positioning mechanism for limiting the position of the top ring is provided on the bottom pile.

[0016] In the above technical solution, further, a number of reinforcing ribs are fixedly connected at equal intervals between the top of the connecting flange and the bottom pile, and a limiting rod is fixedly connected to the top of four of the reinforcing ribs.

[0017] In the above technical solution, the positioning mechanism further includes right-angle blocks, and positioning grooves are provided on both sides of the outer wall of the bottom pile. A pair of right-angle blocks are provided, and the right-angle blocks are slidably connected to the inside of the positioning grooves. A lower spring is fixedly connected between the side of the right-angle blocks that is close to each other and the positioning groove.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention, through the setting of structures such as ring, fixing mechanism, pouring cylinder and cylinder, can act as a pouring mold between the iron tower foundation and the connecting flange during secondary pouring, without the need to find other materials for cutting, saving time and effort, and will not affect the normal installation of the bottom pile. At the same time, it facilitates the installation of drainage pipe at the pouring position, without the need for workers to cut at the insertion position of the drainage pipe.

[0020] 2. The present invention, through the setting of structures such as cylinder, shielding structure and limiting rod, can shield the iron tower fixing device after the secondary pouring, avoid the upper nut and screw from long-term rainwater corrosion, and further improve the convenience of the device. Attached Figure Description

[0021] Figure 1 This is a frontal perspective view of the foundation fixing device of the present invention;

[0022] Figure 2 This is a bottom-view perspective view of the connecting flange structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the partial external structure of the bottom pile of the present invention;

[0024] Figure 4 Appendix of the present invention Figure 1 A magnified view of the structure at point A in the middle;

[0025] Figure 5 This is a three-dimensional cross-sectional view of the front of the bottom pile of the present invention;

[0026] Figure 6 Appendix of the present invention Figure 5 A magnified schematic diagram of the structure at point B in the middle;

[0027] Figure 7 This is a schematic diagram of the full cross-sectional three-dimensional structure of the cylindrical side of the present invention;

[0028] Figure 8 This is a bottom-view full-section three-dimensional structural diagram of the connecting flange of the present invention;

[0029] Figure 9 This is a schematic diagram of the overall appearance structure of the annulus and external threaded block of the present invention.

[0030] In the diagram: 1. Tower foundation; 2. Screw rod; 3. Bottom pile; 4. Connecting flange; 5. Lower nut; 6. Upper nut; 7. Cylinder; 8. Circular cavity; 9. Ring; 10. Expansion groove; 11. External threaded block; 12. Fixing seat; 13. Roller; 14. Casting cylinder; 15. Groove; 16. Arc groove; 17. Top plate; 18. Fixing rod; 19. Round rod; 20. Adjusting groove; 21. Bolt; 22. Fixing threaded groove; 23. Plastic film; 24. Push plate; 25. Casting port; 26. Upper sealing block; 27. Drainage pipe inlet; 28. Lower sealing block; 29. ​​Top ring; 30. Limiting ring; 31. Clamping ring; 32. Reinforcing rib; 33. Limiting rod; 34. Drainage outlet; 35. Internal threaded groove; 36. Upper spring; 37. Positioning groove; 38. Right-angle block; 39. Lower spring. Detailed Implementation

[0031] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the invention is not limited to the specific embodiments disclosed below.

[0033] like Figure 1-9 The foundation fixing device of a communication tower shown includes a tower foundation 1 and a bottom pile 3, and a number of screw rods 2 distributed in a circle on the tower foundation 1. A connecting flange 4 is fixedly connected to the bottom end of the outer wall of the bottom pile 3. A lower nut 5 is threadedly connected to each of the screw rods 2. When connecting and fixing, the hole on the connecting flange 4 is hoisted and inserted into the screw rod 2, and then the upper nut 6 is screwed into the screw rod 2, thereby locking the connecting flange 4 onto the screw rod 2.

[0034] The outer wall of the bottom pile 3 is provided with a cylinder 7, and the cylinder 7 is provided with a shielding structure for shielding the upper nut 6. The bottom inner side of the cylinder 7 is provided with an internal thread groove 35. The connecting flange 4 is provided with a circular cavity 8, and a ring 9 is rotatably connected to the inner side of the circular cavity 8. The outer wall of the connecting flange 4 is provided with four expansion grooves 10 at equal intervals. The inner side of each of the four expansion grooves 10 is slidably connected with an external thread block 11. The side of the external thread block 11 that is close to each other is fixedly connected with a fixing seat 12, and the side wall of the fixing seat 12 is set through the inner side of the circular cavity 8. Rollers 13 are rotatably connected to the inner side of each fixing seat 12. The roller 13 improves the smoothness of the device during operation and avoids direct contact between the fixed seat 12 and the outer wall of the ring 9. The outer wall of the roller 13 contacts the outer wall of the ring 9. A pair of upper springs 36 are fixedly connected between the side of the external threaded block 11 close to the inner side of the telescopic groove 10. The upper springs 36 facilitate pulling the external threaded block 11 to slide inward. The outer wall of the ring 9 and the side next to the roller 13 are provided with recessed grooves 15. The side of the grooves 15 close to the roller 13 is inclined. The inclined setting makes it easier for the roller 13 to slide into and out of the grooves 15.

[0035] The bottom pile 3 is provided with a casting cylinder 14 inside. The ring 9 is provided with a fixing mechanism for fixing the position of the casting cylinder 14. The top of the connecting flange 4 is provided with an arc groove 16. The arc groove 16 facilitates the movement of the top plate 17 and realizes the quick adjustment of the position of the ring 9. The top of the ring 9 and located inside the arc groove 16 are fixedly connected to the top plate 17. The top plate 17 is provided with a limiting mechanism for fixing the position of the ring 9. The limiting mechanism includes a bolt 21. The bolt 21 is threaded through and connected to the side wall of the top plate 17. The outer wall of the bottom pile 3 and above both ends of the arc groove 16 are provided with fixing thread grooves 22. The end of the bolt 21 is threadedly connected to the inside of one of the fixing thread grooves 22.

[0036] The fixing mechanism includes four fixing rods 18, which are located inside the bottom pile 3. The side walls of the four fixing rods 18 are slidably connected to the circular cavity 8. The top of each fixing rod 18 is fixedly connected to a round rod 19. The bottom of the ring 9 and the corresponding position of the round rod 19 are provided with adjustment grooves 20. The round rod 19 is inserted into the inner side of the adjustment groove 20, and the radius distance between the two ends of the adjustment groove 20 gradually increases. The casting cylinder 14 is located above the fixing rods 18.

[0037] When installing a communication tower, a crane is used to hoist the bottom pile 3 onto the tower foundation 1. The hole on the connecting flange 4 is passed through the screw 2 and placed on the lower nut 5. Then, the upper nut 6 is screwed in and tightened. The position of the lower nut 5 is adjusted to adjust the level of the tower foundation 1. When a second pour is needed to seal the gap between the bottom pile 3 and the tower foundation 1, the bolt 21 is first turned out of the fixed thread groove 22 to release the position restriction on the top plate 17. Then, the top plate 17 can be pushed to drive the ring 9 to rotate, thereby rotating the groove 15 to the side of the roller 13, thereby releasing the pressure on the roller 13. Then, under the elastic force of the upper spring 36, the external thread block 11 is pulled into the inner side of the expansion groove 10, and at the same time, the roller 13 is driven into the groove 15, thereby releasing the restriction on the bottom of the cylinder 7.

[0038] As the ring 9 rotates, due to the different radii at both ends of the adjusting groove 20 (gradually increasing in size), and because the fixed rod 18 can only slide left and right, the adjusting groove 20 will press the round rod 19 to move, thereby causing the fixed rod 18 to slide to the opposite side, releasing the restriction on the position below the pouring cylinder 14. Subsequently, the pouring cylinder 14 falls down under its own weight (it should be noted that the position of the pouring cylinder 14 after falling is below the fixed rod 18 to avoid obstructing the subsequent reset of the fixed rod 18).

[0039] Finally, rotate the retaining ring 31 to disconnect the cylinder 7 from the top ring 29. Then, lower the cylinder 7 through the connecting flange 4 and place it between the tower foundation 1 and the connecting flange 4. Next, open the lower sealing block 28, pass the drain pipe through the two drain pipe inlets 27, and pass it through the inside of the cylinder 7. Then, open the upper sealing block 26 and pour concrete between the connecting flange 4 and the tower foundation 1. After the concrete has solidified, repeat the above operation in reverse to remove the cylinder 7.

[0040] To improve the convenience of the casting process, a plastic film 23 is adhered to the inner side of the cylinder 7 and covers the inner thread groove 35. The plastic film 23 prevents the concrete from directly contacting the inner side of the cylinder 7, thereby improving the convenience of the subsequent demolding process. Several push plates 24 are fixedly connected at equal intervals on the outer wall of the cylinder 7. The push plates 24 facilitate the rotation of the cylinder 7 on the outer thread block 11, improving the convenience of the device.

[0041] To facilitate the pouring of concrete, a pouring port 25 is provided on the top of the connecting flange 4. The pouring port 25 facilitates the pouring of concrete between the cylinder 7 and the pouring cylinder 14, thus improving the ease of pouring. An upper sealing block 26 is threadedly connected to the inside of the pouring port 25, which can be used to seal the pouring port 25.

[0042] To further improve the ease of casting, both the outer walls of the cylinder 7 and the casting cylinder 14 are provided with drainage pipe inlets 27. The drainage pipe inlets 27 facilitate the installation of drainage pipes at the casting location. It should be noted that when installing the drainage pipe, it is necessary to pass through the inside of the cylinder 7 to avoid obstruction during demolding. There is no need for workers to cut the drainage pipe at the insertion location. The drainage pipe inlets 27 on the cylinder 7 are threaded with a lower sealing block 28. The lower sealing block 28 facilitates the sealing of the drainage pipe inlets 27 on the cylinder 7 after casting, so as to avoid affecting the shielding effect on the tower fixing device.

[0043] In order to provide a shielding effect for the tower fixing device after the secondary pouring, the shielding structure includes a top ring 29, which is fitted on the outer wall of the bottom pile 3. A limiting ring 30 is fixedly connected to the top of the inner side of the cylinder 7 to limit the position of the top ring 29. The limiting ring 30 can limit the downward sliding position of the top ring 29 on the cylinder 7. Three retaining rings 31 are rotatably connected to the top of the cylinder 7 to limit the position of the top of the top ring 29. The retaining rings 31 can limit the position of the top of the top ring 29, and the three retaining rings 31 are interference fit with the top ring 29 to make it easy for the retaining rings 31 to be tightly locked on the top ring 29. Three drainage holes 34 are opened at the top of the cylinder 7 to facilitate the drainage of rainwater falling into the top ring 29 and the cylinder 7. The bottom pile 3 is provided with a positioning mechanism to limit the position of the top ring 29.

[0044] Several reinforcing ribs 32 are fixedly connected at equal intervals between the top of the connecting flange 4 and the bottom pile 3. The reinforcing ribs 32 can enhance the connection strength between the connecting flange 4 and the bottom pile 3. Among them, four reinforcing ribs 32 are fixedly connected to the top of the limiting rods 33. The limiting rods 33 can restrict the bottom position of the top ring 29.

[0045] After the secondary pouring of the communication tower is completed, first demold the cylinder 7 from the solidified concrete, then move the cylinder 7 upwards to above the connecting flange 4. Next, release the restraints of the fixing mechanism, push the top plate 17 to slide inside the arc-shaped groove 16, rotate the top plate 17 to the other side, and then fix the top plate 17 using the fixing mechanism. At this point, the external threaded block 11 will extend out. Then, push the right-angle block 38 towards the center to slide inside the positioning groove 37, compressing the lower spring 39, thereby releasing the positional restriction on the top ring 29. Subsequently, the top ring 29 falls onto the cylinder 7 under its own weight. Then, the rotating retaining ring 31 engages with the top ring 29, restricting the top position of the top ring 29. Then, the push plate 24 can be pushed to connect the cylinder 7 to the external threaded block 11 through the internal threaded groove 35. Then, the bottom of the top ring 29 will be resisted by the limiting rod 33, thereby locking the cylinder 7 and the top ring 29 onto the screw rod 2 and the upper nut 6, which can play a role in shielding the iron tower fixing device, preventing the upper nut 6 and the screw rod 2 from being corroded by rainwater for a long time, and further improving the convenience of the device.

[0046] In order to fix the position of the cylinder 7 and the top ring 29 when they are not in use, the positioning mechanism includes right-angle blocks 38, positioning grooves 37 are provided on both sides of the outer wall of the bottom pile 3, a pair of right-angle blocks 38 are provided, and the right-angle blocks 38 are slidably connected to the inside of the positioning grooves 37. A lower spring 39 is fixedly connected between the side of the right-angle blocks 38 that is close to the positioning groove 37.

[0047] By setting up a positioning mechanism, before installing the bottom pile 3, the cylinder 7 can be pushed upward to move the top ring 29 upward. When the top ring 29 passes the right-angle block 38, the inner side of the top ring 29 will press the inclined surface of the right-angle block 38, thereby pressing the two right-angle blocks 38 towards the middle to slide into the positioning groove 37 and press the lower spring 39. Then, when the top ring 29 slides out from the right-angle block 38, it will release the pressure on the right-angle block 38. Then, under the elastic force of the lower spring 39, the right-angle block 38 will be pushed out and stuck under the top ring 29. This can restrict the position of the top ring 29 and the cylinder 7, so as to avoid affecting the normal installation of the upper nut 6 on the bottom pile 3.

[0048] The foregoing has shown and described the basic principles, main features, and advantages of the present invention.

[0049] Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of the present invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed.

Claims

1. A foundation fixing device for a communication tower, comprising a tower foundation (1) and a bottom pile (3), and a plurality of screws (2) distributed circumferentially on the tower foundation (1), characterized in that: The bottom of the outer wall of the bottom pile (3) is fixedly connected to a connecting flange (4), and a number of screws (2) are threaded with a lower nut (5). When connecting and fixing, the hole on the connecting flange (4) is hoisted and inserted into the screw (2), and then the upper nut (6) is screwed into the screw (2) to lock the connecting flange (4) onto the screw (2). The outer wall of the bottom pile (3) is provided with a cylinder (7), and the cylinder (7) is provided with a shielding structure for shielding the upper nut (6). The bottom inner side of the cylinder (7) is provided with an internal thread groove (35). The connecting flange (4) is provided with a circular cavity (8). A ring (9) is rotatably connected to the inner side of the circular cavity (8). The outer wall of the connecting flange (4) is provided with four expansion grooves (10) at equal intervals. An external thread block (11) is slidably connected to the inner side of each of the four expansion grooves (10). The external thread blocks (11) are fixedly connected to each other on the side closest to each other. A fixed seat (12) is provided, and the side wall of the fixed seat (12) is provided through the inner side of the circular cavity (8). Rollers (13) are rotatably connected to the inner side of the fixed seat (12). The outer wall of the roller (13) is in contact with the outer wall of the ring (9). A pair of upper springs (36) are fixedly connected between the side of the external thread block (11) close to the inner side of the telescopic groove (10). The outer wall of the ring (9) and the side next to the roller (13) are provided with recessed grooves (15), and the side of the groove (15) close to the roller (13) is inclined. The bottom pile (3) is provided with a casting cylinder (14) inside. The ring (9) is provided with a fixing mechanism for fixing the position of the casting cylinder (14). The top of the connecting flange (4) is provided with an arc groove (16). The top of the ring (9) and located inside the arc groove (16) are fixedly connected with a top plate (17). The top plate (17) is provided with a limiting mechanism for fixing the position of the ring (9). The fixing mechanism includes four fixing rods (18) and is located inside the bottom pile (3). The side walls of the four fixing rods (18) are slidably connected to the circular cavity (8). The top of each fixing rod (18) is fixedly connected to a round rod (19). The bottom of the ring (9) and the position corresponding to the round rod (19) are provided with adjustment grooves (20). The round rod (19) is inserted into the inner side of the adjustment groove (20). The radius distance between the two ends of the adjustment groove (20) gradually increases. The casting cylinder (14) is located above the fixing rods (18).

2. The foundation fixing device for a communication tower according to claim 1, characterized in that: The limiting mechanism includes a bolt (21), which is threaded through and connected to the side wall of the top plate (17). The bottom pile (3) has a fixed threaded groove (22) on its outer wall and above both ends of the arc groove (16). The end of the bolt (21) is threadedly connected to the inside of one of the fixed threaded grooves (22).

3. The foundation fixing device for a communication tower according to claim 1, characterized in that: The inner side of the cylinder (7) is bonded with a plastic film (23) and the inner thread groove (35) is covered. Several push plates (24) are fixedly connected at equal intervals on the outer wall of the cylinder (7).

4. The foundation fixing device for a communication tower according to claim 1, characterized in that: The top of the connecting flange (4) is provided with a pouring port (25), and the inner side of the pouring port (25) is threaded with an upper sealing block (26).

5. The foundation fixing device for a communication tower according to claim 1, characterized in that: Both the outer walls of the cylinder (7) and the casting cylinder (14) are provided with drainage pipe inlets (27), and a lower sealing block (28) is threadedly connected to the inner side of the drainage pipe inlet (27) on the cylinder (7).

6. The foundation fixing device for a communication tower according to claim 1, characterized in that: The shielding structure includes a top ring (29), which is fitted on the outer wall of the bottom pile (3). A limiting ring (30) for limiting the position of the top ring (29) is fixedly connected to the top of the inner side of the cylinder (7). Three retaining rings (31) for limiting the position of the top of the top ring (29) are rotatably connected to the top of the cylinder (7). The three retaining rings (31) are interference-fitted with the top ring (29). Three drainage outlets (34) are opened on the top of the cylinder (7). A positioning mechanism for limiting the position of the top ring (29) is provided on the bottom pile (3).

7. The foundation fixing device for a communication tower according to claim 1, characterized in that: The top of the connecting flange (4) is fixedly connected to the bottom pile (3) at equal intervals by a number of reinforcing ribs (32), and the top of four of the reinforcing ribs (32) is fixedly connected to a limiting rod (33).

8. The foundation fixing device for a communication tower according to claim 6, characterized in that: The positioning mechanism includes right-angle blocks (38), and positioning grooves (37) are provided on both sides of the outer wall of the bottom pile (3). A pair of right-angle blocks (38) are provided, and the right-angle blocks (38) are slidably connected to the inside of the positioning grooves (37). A lower spring (39) is fixedly connected between the side of the right-angle blocks (38) that is close to the positioning groove (37).

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