A concrete pile foundation for an overhead power line tower and a construction method thereof

Abstract

The present invention discloses a concrete pile foundation for an overhead power line tower and a construction method thereof, and relates to the technical field of power towers. The concrete pile foundation for an overhead power line tower comprises a pipe sleeve, and four anti-falling mechanisms are fixedly installed on the side of the pipe sleeve, and the four anti-falling mechanisms are evenly arranged in a circle, and a fixing plate is fixedly installed on the inner wall of the pipe sleeve. When the present invention is used, a hole is first dug, and the pipe sleeve is placed in the hole, and then a piece of wood is placed above the extrusion plate, and the wood is hit with a hammer, so that the extrusion plate moves downward, so that the four extrusion mechanisms first squeeze the four first anti-pullout mechanisms to insert them into the soil, and at the same time, the four first anti-pullout mechanisms drive the four second anti-pullout mechanisms to extend, and then the four extrusion mechanisms squeeze the four second anti-pullout mechanisms, so as to increase the length of the insertion into the soil, improve the anti-pullout property of the pipe sleeve, and fix the tower pile and increase the anti-pullout property of the tower pile through the anti-pullout mechanism.

Description

Technical Field

[0001] The invention relates to the technical field of power pole towers, and in particular to a concrete pile foundation of an overhead power line pole tower and a construction method thereof. Background Art

[0002] The pole tower is one of the basic equipment in the overhead power line. The power line pole tower can be divided into three types according to the material used: wooden pole, cement pole and metal pole. Cement pole has the advantages of long service life and low maintenance workload, and is widely used. The most commonly used cement pole is the tip pole. Under the influence of various factors such as typhoons, geological subsidence, mudslides, floods, vehicle collisions, etc. in complex natural environments, distribution line cement poles are prone to collapse. Some foundations are soft or not compacted, causing the cement poles to sink or tilt. In addition, long-term exposure to harsh environments may cause cracks or corrosion in the cement poles, reducing their stability. If the concrete pile foundation of the overhead power line tower is not designed reasonably, the burial depth is insufficient or the structural strength is insufficient, it is easy to cause collapse. Irregular installation, such as the concrete pile foundation is not buried according to the standard or is not firmly fixed, will also cause collapse. Therefore, the reasonable design of the concrete pile foundation of the pole tower can significantly reduce the incidence of collapse accidents and ensure the safe operation of the distribution line by increasing the pull-out resistance, preventing the cement pole from being pulled out under the action of external force, increasing the contact area with the soil, and improving the pull-out resistance.

[0003] In the prior art, announcement number CN216157302U discloses a wind-resistant reinforced power pole tower, which reinforces pipe piles, but it is not provided with an anti-pullout mechanism, and the reinforcement effect is poor. Even if some prior arts have designed some anti-pullout mechanisms, in actual use, due to the limited diameter of the hole inserted into the pile foundation, the designed anti-pullout mechanism is inserted into the soil to a limited distance, and the anti-pullout effect is poor. For this reason, this project discloses a concrete pile foundation of an overhead power line pole tower and a construction method thereof. Summary of the invention

[0004] The invention provides a concrete pile foundation for an overhead power line tower and a construction method thereof, in order to solve the problem in the background art that in actual use, due to the limited diameter of the hole inserted into the pile foundation, the designed anti-pullout mechanism has a limited insertion distance into the soil and a poor anti-pullout effect.

[0005] To achieve the above objectives, the present invention provides the following technical solutions: a concrete pile foundation for an overhead power line tower, comprising a pipe sleeve, four anti-falling mechanisms are fixedly installed on the side of the pipe sleeve, the four anti-falling mechanisms are evenly arranged in a circle, a fixed plate is fixedly installed on the inner wall of the pipe sleeve, an extrusion plate slidably installed on the inner wall of the pipe sleeve is arranged above the fixed plate, four extrusion mechanisms are installed at the bottom of the extrusion plate, four first anti-pullout mechanisms and four second anti-pullout mechanisms are arranged below the fixed plate, the four first anti-pullout mechanisms are respectively installed in cooperation with the four second anti-pullout mechanisms, the four first anti-pullout mechanisms are respectively installed in cooperation with the four extrusion mechanisms, and the four extrusion mechanisms are respectively installed in cooperation with the four second anti-pullout mechanisms; The first anti-pullout mechanism includes a plurality of outer transverse columns evenly arranged up and down, two outer transverse columns close to each other are fixedly connected by an inner connecting rod, both sides of the outer transverse column located in the middle are fixedly installed with internal pressure columns, and the two internal pressure columns are installed in cooperation with the extrusion mechanism, one side of the outer transverse column is provided with a removal hole opened on the inner wall of the sleeve, the side of the outer transverse column extends into the removal hole, the end of the outer transverse column away from the internal pressure column is triangularly arranged, and each of the two ends of the outer transverse column is provided with mounting holes.

[0006] As a preferred technical solution of the present invention, the anti-fall mechanism includes a mounting plate fixedly installed on the side of the pipe sleeve, two fixing blocks are provided on the top of the mounting plate, rectangular holes are provided on the sides of the two fixing blocks close to each other, clamping rods are slidably installed in the two rectangular holes, screws are fixedly installed on the sides of the two clamping rods close to each other, the external threads on the two screws are arranged oppositely, a rotating sleeve is provided between the two fixing blocks, two sections of internal threads arranged oppositely are provided on the rotating sleeve, the two internal threads are respectively matched with two external threads, a clamping groove opened on the side of the tower pile is provided on one side of the clamping rod, and the clamping rod is matched with the clamping groove.

[0007] As a preferred technical solution of the present invention, the anti-fall mechanism also includes a plug-in hole opened on the top of the mounting plate, a plug-in rod movably installed in the plug-in hole, the bottom end of the plug-in rod is conically set, and a plug-in plate is fixedly installed on the top of the plug-in rod, and an annular groove is opened on the annular side of the plug-in plate, and one end of the clamping rod away from the tower pile corresponds to the position of the annular groove.

[0008] As a preferred technical solution of the present invention, four threaded holes evenly arranged in a circumference are opened on the inner wall of the pipe sleeve, and bolts are threadedly installed in the four threaded holes.

[0009] As a preferred technical solution of the present invention, the second anti-pullout mechanism includes a plurality of middle cross columns evenly arranged up and down, one end of the plurality of middle cross columns are respectively slidably installed in the plurality of installation holes, the other ends of the plurality of middle cross columns are each provided with a rectangular groove, the plurality of rectangular grooves are each slidably installed with an inner cross column, one end of the plurality of inner cross columns respectively extends outside the plurality of rectangular grooves, two inner cross columns close to each other are fixedly connected by an external connecting rod, external pressure columns are fixedly installed on both sides of the inner cross column located in the middle, the two external pressure columns are installed in cooperation with the extrusion mechanism, and a limiting component is installed in the inner cross column located at the bottom.

[0010] As a preferred technical solution of the present invention, the limit assembly includes a moving groove opened in the side portion of the inner cross column, an entry hole is opened on one inner wall of the moving groove, an L-shaped fixing rod is slidably installed in the moving groove, one end of the L-shaped fixing rod extends outside the moving groove, and the other end of the L-shaped fixing rod passes through the entry hole, a limiting hole is opened on the inner wall of the rectangular groove, and the limiting hole corresponds to one end of the L-shaped fixing rod. A limiting block is fixedly installed on the side portion of the inner cross column, a circular hole is opened on the side portion of the limiting block, a limiting rod is slidably installed in the circular hole, one end of the limiting rod is fixedly connected to the side portion of the L-shaped fixing rod, a mounting rod is fixedly installed on the inner wall of the pipe sleeve, a limiting groove is opened on the side portion of the mounting rod, and the other end of the limiting rod extends into the limiting groove, a limiting spring is sleeved on the limiting rod, and two ends of the limiting spring are respectively fixedly installed on the sides of the L-shaped fixing rod and the limiting block close to each other.

[0011] As a preferred technical solution of the present invention, a friction groove is provided at the bottom of the outer cross column, a friction strip is fixedly installed in the friction groove, and the friction strip is in contact with the bottom inner wall of the removal hole.

[0012] As a preferred technical solution of the present invention, each of the outer horizontal columns is provided with two blocking grooves on the side away from the limiting rod, and the two blocking grooves are connected with the corresponding mounting holes. A triangular block is fixedly installed on the top and bottom of each of the middle horizontal columns, and the sides of the two triangular blocks away from each other are respectively located in the two blocking grooves.

[0013] As a preferred technical solution of the present invention, the extrusion mechanism includes two long pressure rods and two short pressure rods fixedly installed at the bottom of the extrusion plate, and four sliding holes are opened at the top of the fixed plate. The bottom ends of the two long pressure rods and the two short pressure rods respectively pass through the four sliding holes and are fixedly installed with inclined pressure columns. The bottom height of the inclined pressure column located above is greater than or equal to the top height of the inclined pressure column below, the bottoms of the two inclined pressure columns located below are respectively in contact with the sides of the two internal pressure columns, and the bottoms of the two inclined pressure columns located above correspond to the positions of the two external pressure columns respectively.

[0014] The present application also discloses a construction method for a concrete pile foundation of an overhead power line tower, the method comprising the following steps: Step 1: When using, first dig a hole, put the pipe sleeve into the hole, then put the wood on top of the extrusion plate, and hit the wood with a hammer to make the extrusion plate move downward, so that the short pressure rod and the extrusion plate move downward, and the movement of the short pressure rod and the extrusion plate drives the two upper and lower oblique pressure columns to move downward, and the lower oblique pressure column first contacts the inner pressure column, thereby squeezing the inner pressure column to move it, and the movement of the inner pressure column drives the outer horizontal column to insert into the soil on the inner wall of the hole, and the outer horizontal column moves through the two triangular blocks to drive the middle horizontal column to move, and the inner horizontal column is limited by the limit rod and the limit groove, so that the middle horizontal column and the inner horizontal column slide relative to each other; The L-shaped fixing rod is in a state of being inserted into the limiting hole, and the limiting spring is in a state of being deformed. Under the action of the limiting spring, one end of the L-shaped fixing rod is inserted into the limiting hole to be fixed. The L-shaped fixing rod moves to drive the limiting rod to move out of the limiting groove, thereby releasing the limit of the inner cross column. At this time, the inner pressure column contacts the vertical side of the long pressure column, and the inclined side of the upper oblique pressure column contacts the outer pressure column. The extrusion plate continues to be impacted and moves downward to contact the fixed plate. The inclined side of the oblique pressure column squeezes the inner cross column to make it move. At this time, the inner cross column is connected to the middle cross column, and the movement of the inner cross column drives the middle cross column to move, so that the middle cross column is moved out of the mounting hole in the outer cross column, so as to continue to be inserted into the soil. Step three, finally bury the gap between the outside of the pipe sleeve and the hole in the soil, put the tower pile in, the slot on the tower pile corresponds to the clamping rod, then pass the plug rod through the plug-in hole and nail it into the ground, the inner horizontal column corresponds to the other clamping rod, and the outer side of the rotating sleeve is provided with a wrench slot. By rotating the rotating sleeve, the two screw rods can be moved away from each other, so that one clamping rod is inserted into the slot and the other clamping rod is inserted into the inner horizontal column to form a fixation, and four bolts are screwed into the four threaded holes respectively to further limit the pipe sleeve, thereby completing the installation.

[0015] Compared with the prior art, the present invention provides a concrete pile foundation for an overhead power line tower, which has the following beneficial effects: When the present invention is used, a hole is first dug, and a pipe sleeve is placed in the hole. Then, wood is placed above the extrusion plate, and the wood is hit with a hammer, so that the extrusion plate moves downward, so that the four extrusion mechanisms first squeeze the four first anti-pullout mechanisms to insert them into the soil. At the same time, the four first anti-pullout mechanisms drive the four second anti-pullout mechanisms to extend, and then the four extrusion mechanisms squeeze the four second anti-pullout mechanisms, so as to increase the length of the insertion into the soil, improve the anti-pullout property of the pipe sleeve, and fix the tower pile through the anti-falling mechanism and increase the anti-falling property of the tower pile. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of a concrete pile foundation of an overhead power line tower of the present invention; Figure 2 It is a three-dimensional schematic diagram of the structure of a partial anti-collapse mechanism of a concrete pile foundation of an overhead power line tower of the present invention; Figure 3 It is a cutaway three-dimensional schematic diagram of a concrete pile foundation of an overhead power line tower of the present invention; Figure 4 A first perspective stereoscopic diagram of the connection between a portion of the sleeve, the first anti-pullout mechanism, the squeezing mechanism, and the second anti-pullout mechanism of the present invention; Figure 5 for Figure 4 Enlarged view of point A in the middle; Figure 6 A second perspective stereoscopic diagram of the connection between a portion of the sleeve, the first anti-pullout mechanism, the squeezing mechanism, and the second anti-pullout mechanism of the present invention; Figure 7 It is a schematic structural diagram of the connection of the outer horizontal column, the middle horizontal column, the inner horizontal column and the limit assembly of the present invention; Figure 8 It is a three-dimensional diagram of the connection of the outer horizontal column, the middle horizontal column and the triangular block of the present invention.

[0017] In the figure: 1. pipe sleeve; 2. tower pile; 3. clamping groove; 4. clamping rod; 5. mounting plate; 6. bolt; 7. plug rod; 8. rotating sleeve; 9. screw rod; 10. fixing block; 11. plug plate; 12. annular groove; 13. oblique pressure column; 14. long pressure rod; 15. short pressure rod; 16. extrusion plate; 17. fixing plate; 18. removal hole; 19. inner connecting rod; 20. outer cross column; 21. middle cross column; 22. inner cross column; 23. outer connecting rod; 24. mounting rod; 25. limiting rod; 26. limiting block; 27. limiting spring; 28. L-shaped fixing rod; 29. ​​round hole; 30. friction strip; 31. outer pressure column; 32. inner pressure column; 33. limiting groove; 34. moving groove; 35. limiting hole; 36. triangular block. DETAILED DESCRIPTION

[0018] The present invention is further described below in conjunction with specific embodiments. However, people familiar with the art should understand that the detailed description given here in conjunction with the drawings is for better explanation, and the structure of the present invention necessarily exceeds these limited embodiments. For some equivalent replacement schemes or common means, they are no longer described in detail herein, but still belong to the scope of protection of the present application.

[0019] Figure 1-Figure 8 The best embodiment of the present invention is shown below in conjunction with the attached Figure 1-Figure 8 The present invention is further described.

[0020] The present invention discloses a concrete pile foundation for an overhead power line tower, comprising a pipe sleeve 1, four anti-falling mechanisms are fixedly installed on the side of the pipe sleeve 1, the four anti-falling mechanisms are evenly arranged in a circle, a fixing plate 17 is fixedly installed on the inner wall of the pipe sleeve 1, an extrusion plate 16 slidably installed on the inner wall of the pipe sleeve 1 is arranged above the fixing plate 17, four extrusion mechanisms are installed at the bottom of the extrusion plate 16, four first anti-pullout mechanisms and four second anti-pullout mechanisms are arranged below the fixing plate 17, the four first anti-pullout mechanisms are respectively installed in cooperation with the four second anti-pullout mechanisms, the four first anti-pullout mechanisms are respectively installed in cooperation with the four extrusion mechanisms, and the four extrusion mechanisms are respectively installed in cooperation with the four second anti-pullout mechanisms.

[0021] By means of the above structure: when in use, first dig a hole, put the pipe sleeve 1 into the hole, then put the wood on top of the extrusion plate 16, and hit the wood with a hammer to make the extrusion plate 16 move downward, so that the four extrusion mechanisms first squeeze the four first anti-pullout mechanisms to insert them into the soil, and at the same time, the four first anti-pullout mechanisms drive the four second anti-pullout mechanisms to extend, and then the four extrusion mechanisms squeeze the four second anti-pullout mechanisms, thereby increasing the length of insertion into the soil, improving the anti-pullout property of the pipe sleeve 1, and the anti-falling mechanism can fix the tower pile 2 and increase the anti-falling property of the tower pile 2.

[0022] like Figure 4 , Figure 6As shown, the first anti-pullout mechanism includes a plurality of outer transverse columns 20 evenly arranged up and down, two outer transverse columns 20 close to each other are fixedly connected by an inner connecting rod 19, and both sides of the outer transverse column 20 located in the middle are fixedly installed with internal pressure columns 32, and the two internal pressure columns 32 are installed in cooperation with the extrusion mechanism. One side of the outer transverse column 20 is provided with a removal hole 18 opened on the inner wall of the sleeve 1, and the side of the outer transverse column 20 extends into the removal hole 18. The end of the outer transverse column 20 away from the internal pressure column 32 is triangularly arranged, and each of the two ends of the outer transverse column 20 is provided with a mounting hole. The movement of the extrusion plate 16 drives the upper and lower inclined pressure columns 13 to move downward. The lower inclined pressure column 13 first contacts the inner pressure column 32, thereby squeezing the inner pressure column 32 to make it move. The movement of the inner pressure column 32 drives the outer cross column 20 to insert into the soil on the inner wall of the hole. The outer cross column 20 moves through the two triangular blocks 36 to drive the middle cross column 21 to move. The inner cross column 22 is limited by the limit rod 25 and the limit groove 33, so that the middle cross column 21 and the inner cross column 22 slide relative to each other.

[0023] like Figure 1-2 As shown, the anti-fall mechanism includes a mounting plate 5 fixedly mounted on the side of the pipe sleeve 1, and two fixing blocks 10 are provided on the top of the mounting plate 5. The sides of the two fixing blocks 10 close to each other are provided with rectangular holes, and the two rectangular holes are slidably installed with clamping rods 4. The sides of the two clamping rods 4 close to each other are fixedly installed with screws 9, and the external threads on the two screws 9 are arranged oppositely. A rotating sleeve 8 is arranged between the two fixing blocks 10, and the rotating sleeve 8 is provided with two sections of internal threads arranged oppositely. The two internal threads are respectively matched with the two external threads for installation, and the clamping rod 4 is fixedly mounted on the sides of the two clamping rods 4 close to each other. One side is provided with a slot 3 opened on the side of the tower pile 2, and the clamping rod 4 is installed in cooperation with the slot 3; the anti-fall mechanism also includes a plug-in hole opened on the top of the mounting plate 5, in which a plug-in rod 7 is movably installed, the bottom end of the plug-in rod 7 is conically set, and a plug-in plate 11 is fixedly installed on the top of the plug-in rod 7, and an annular groove 12 is opened on the annular side of the plug-in plate 11, and one end of a clamping rod 4 away from the tower pile 2 corresponds to the position of the annular groove 12, and four threaded holes evenly arranged in a circle are opened on the inner wall of the pipe sleeve 1, and bolts 6 are threadedly installed in the four threaded holes. The gap between the outside of the pipe sleeve 1 and the hole is buried in the soil, and the tower pile 2 is put in. The slot 3 on the tower pile 2 corresponds to the clamping rod 4, and then the insertion rod 7 is passed through the insertion hole and nailed into the ground. The inner horizontal column 22 corresponds to the other clamping rod 4. The outer side of the rotating sleeve 8 is provided with a wrench groove. By rotating the rotating sleeve 8, the two screw rods 9 can be moved away from each other, so that one clamping rod 4 is inserted into the slot 3, and the other clamping rod 4 is inserted into the inner horizontal column 22 to form a fixation. Four bolts 6 are screwed into the four threaded holes respectively, so as to further limit the pipe sleeve 1 and complete the installation.

[0024] like Figure 5 , Figure 6 and Figure 7As shown, the second anti-pullout mechanism includes a plurality of middle cross columns 21 evenly arranged up and down, one end of the plurality of middle cross columns 21 is respectively slidably installed in the plurality of mounting holes, the other ends of the plurality of middle cross columns 21 are provided with rectangular grooves, the plurality of rectangular grooves are each slidably installed with inner cross columns 22, one ends of the plurality of inner cross columns 22 are respectively extended to the outside of the plurality of rectangular grooves, two inner cross columns 22 close to each other are fixedly connected by an outer connecting rod 23, both sides of the inner cross column 22 located in the middle are fixedly installed with outer pressure columns 31, the two outer pressure columns 31 are installed in cooperation with the extrusion mechanism, and a limiting component is installed in the inner cross column 22 located at the bottom; the limiting component includes a moving groove 34 opened on the side of the inner cross column 22, an entry hole is opened on the inner wall of one side of the moving groove 34, and an L-shaped fixing rod 2 is slidably installed in the moving groove 34 8. One end of the L-shaped fixing rod 28 extends to the outside of the movable groove 34, and the other end of the L-shaped fixing rod 28 passes through the entry hole. A limiting hole 35 is provided on the inner wall of the rectangular groove, and the limiting hole 35 corresponds to one end of the L-shaped fixing rod 28. A limiting block 26 is fixedly installed on the side of the inner cross column 22, and a circular hole 29 is provided on the side of the limiting block 26. The limiting rod 25 is slidably installed in the circular hole 29, and one end of the limiting rod 25 is fixedly connected to the side of the L-shaped fixing rod 28. A mounting rod 24 is fixedly installed on the inner wall of the pipe sleeve 1, and a limiting groove 33 is provided on the side of the mounting rod 24. The other end of the limiting rod 25 extends into the limiting groove 33. A limiting spring 27 is sleeved on the limiting rod 25, and both ends of the limiting spring 27 are respectively fixedly installed on the sides of the L-shaped fixing rod 28 and the limiting block 26 that are close to each other. When the outer cross column 20 is inserted, the L-shaped fixing rod 28 corresponds to the position of the limiting hole 35, and the limiting spring 27 is in a deformed state. Under the action of the limiting spring 27, one end of the L-shaped fixing rod 28 is inserted into the limiting hole 35 to form a fixation. The L-shaped fixing rod 28 moves to drive the limiting rod 25 to move out of the limiting groove 33, thereby releasing the limit of the inner cross column 22. At this time, the inner pressure column 32 contacts the vertical side of the long pressure rod 14, and the inclined side of the upper oblique pressure column 13 contacts the outer pressure column 31. The extrusion plate 16 continues to be impacted and moves downward to contact the fixing plate 17. The inclined side of the oblique pressure column 13 squeezes the inner cross column 22 to make it move. At this time, the inner cross column 22 is connected to the middle cross column 21. The movement of the inner cross column 22 drives the middle cross column 21 to move, so that the middle cross column 21 is moved out of the mounting hole in the outer cross column 20, and then continues to be inserted into the soil.

[0025] like Figure 5 As shown, a friction groove is provided at the bottom of the outer crossbar 20, and a friction strip 30 is fixedly installed in the friction groove, and the friction strip 30 contacts the inner wall of the bottom side of the removal hole 18. The advantage of this arrangement is that the outer crossbar 20 will not move under the weight of the squeeze plate 16, which is convenient for the early stage of the pipe sleeve 1 to be placed in the hole.

[0026] like Figure 8As shown, each outer cross column 20 has two blocking grooves on the side away from the limit rod 25, and the two blocking grooves are connected to the corresponding mounting holes. A triangular block 36 is fixedly installed on the top and bottom of each middle cross column 21, and the sides of the two triangular blocks 36 away from each other are respectively located in the two blocking grooves. The advantage of this arrangement is that when the outer cross column 20 moves, the triangular block 36 drives the middle cross column 21 to move, thereby completing the stretching of the middle cross column 21 and the inner cross column 22.

[0027] like Figure 3 and Figure 6 As shown, the squeezing mechanism includes two long pressure rods 14 and two short pressure rods 15 fixedly mounted at the bottom of the squeezing plate 16, and four sliding holes are opened at the top of the fixed plate 17. The bottom ends of the two long pressure rods 14 and the two short pressure rods 15 respectively penetrate the four sliding holes and are fixedly mounted with oblique pressure columns 13. The bottom height of the upper oblique pressure column 13 is greater than or equal to the top height of the lower oblique pressure column 13. The bottoms of the two lower oblique pressure columns 13 respectively contact the sides of the two inner pressure columns 32, and the bottoms of the two upper oblique pressure columns 13 respectively correspond to the positions of the two outer pressure columns 31. Put the wood on the top of the squeezing plate 16, and hit the wood with a hammer, so that the squeezing plate 16 moves downward, so that the short pressure rod 15 and the squeezing plate 16 move downward, and the movement of the short pressure rod 15 and the squeezing plate 16 drives the upper and lower oblique pressure columns 13 to move downward, thereby realizing the squeezing of the first anti-pullout mechanism and the second anti-pullout mechanism.

[0028] The present application also discloses a construction method for a concrete pile foundation of an overhead power line tower, the method comprising the following steps: Step 1: When in use, first dig a hole, put the pipe sleeve 1 into the hole, then put the wood on the top of the extrusion plate 16, and hit the wood with a hammer to make the extrusion plate 16 move downward, so that the short pressure rod 15 and the extrusion plate 16 move downward, and the movement of the short pressure rod 15 and the extrusion plate 16 drives the two upper and lower oblique pressure columns 13 to move downward, and the lower oblique pressure column 13 first contacts the inner pressure column 32, thereby squeezing the inner pressure column 32 to move it, and the movement of the inner pressure column 32 drives the outer cross column 20 to insert into the soil on the inner wall of the hole, and the outer cross column 20 moves through the two triangular blocks 36 to drive the middle cross column 21 to move, and the inner cross column 22 is limited by the limit rod 25 and the limit groove 33, so that the middle cross column 21 and the inner cross column 22 slide relative to each other; The second step is to release the inner cross column 22 from the inner pressure column 32 and the outer pressure column 31 from the inner pressure column 32. The inner cross column 22 is connected to the middle cross column 21, and the inner cross column 22 moves to drive the middle cross column 21 to move so that the middle cross column 21 is removed from the mounting hole in the outer cross column 20, thereby continuing to be inserted into the soil. Step three, finally bury the gap between the outside of the pipe sleeve 1 and the hole in the soil, put the tower pile 2 in, the slot 3 on the tower pile 2 corresponds to the clamping rod 4, then pass the insertion rod 7 through the plug-in hole and nail it into the ground, the inner cross column 22 corresponds to the other clamping rod 4, and the outer side of the rotating sleeve 8 is provided with a wrench groove. By rotating the rotating sleeve 8, the two screw rods 9 can be moved away from each other, so that one clamping rod 4 is inserted into the slot 3, and the other clamping rod 4 is inserted into the inner cross column 22 to form a fixation, and four bolts 6 are respectively screwed into the four threaded holes to further limit the pipe sleeve 1, thereby completing the installation.

[0029] The above are only preferred embodiments of the present invention, and are not intended to limit the present invention in other forms. Any person skilled in the art may use the above disclosed technical contents to change or modify them into equivalent embodiments with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A concrete pile foundation for an overhead power line tower, characterized in that: It comprises a pipe sleeve (1), the side of the pipe sleeve (1) is fixedly mounted with four anti-falling mechanisms, the four anti-falling mechanisms are evenly arranged in a circle, a fixing plate (17) is fixedly mounted on the inner wall of the pipe sleeve (1), an extrusion plate (16) slidably mounted on the inner wall of the pipe sleeve (1) is arranged above the fixing plate (17), four extrusion mechanisms are installed at the bottom of the extrusion plate (16), four first anti-pullout mechanisms and four second anti-pullout mechanisms are arranged below the fixing plate (17), the four first anti-pullout mechanisms are respectively mounted in cooperation with the four second anti-pullout mechanisms, the four first anti-pullout mechanisms are respectively mounted in cooperation with the four extrusion mechanisms, and the four extrusion mechanisms are respectively mounted in cooperation with the four second anti-pullout mechanisms; The first anti-pullout mechanism comprises a plurality of outer transverse columns (20) uniformly arranged in an upper and lower direction, two of the outer transverse columns (20) close to each other are fixedly connected by an inner connecting rod (19), and both sides of the outer transverse column (20) located in the middle are fixedly mounted with internal pressure columns (32), and the two internal pressure columns (32) are mounted in cooperation with the extrusion mechanism, and one side of the outer transverse column (20) is provided with a removal hole (18) opened on the inner wall of the sleeve (1), and the side of the outer transverse column (20) extends into the removal hole (18), and the end of the outer transverse column (20) away from the internal pressure column (32) is triangularly arranged, and each of the two ends of the outer transverse column (20) is provided with a mounting hole.

2. The overhead power line tower concrete pile foundation according to claim 1, characterized in that: The anti-fall mechanism comprises a mounting plate (5) fixedly mounted on the side of the pipe sleeve (1), two fixing blocks (10) are provided on the top of the mounting plate (5), rectangular holes are provided on the sides of the two fixing blocks (10) close to each other, clamping rods (4) are slidably mounted in the two rectangular holes, screw rods (9) are fixedly mounted on the sides of the two clamping rods (4) close to each other, the external threads on the two screw rods (9) are arranged oppositely, a rotating sleeve (8) is provided between the two fixing blocks (10), two sections of internal threads arranged oppositely are provided on the rotating sleeve (8), the two internal threads are respectively mounted in cooperation with the two external threads, a clamping groove (3) provided on one side of the clamping rod (4) and the clamping rod (4) is mounted in cooperation with the clamping groove (3).

3. The overhead power line tower concrete pile foundation according to claim 2, characterized in that: The anti-fall mechanism further comprises a plug hole formed at the top of the mounting plate (5), a plug rod (7) being movably mounted in the plug hole, the bottom end of the plug rod (7) being conical, a plug plate (11) being fixedly mounted at the top end of the plug rod (7), a ring groove (12) being formed at the annular side of the plug plate (11), and an end of the clamping rod (4) away from the tower pile (2) corresponding to the position of the annular groove (12).

4. The concrete pile foundation of an overhead power line tower according to claim 1, characterized in that: The inner wall of the pipe sleeve (1) is provided with four threaded holes evenly arranged in a circumference, and bolts (6) are threadedly installed in the four threaded holes.

5. The overhead power line tower concrete pile foundation according to claim 1, characterized in that: The second anti-pullout mechanism comprises a plurality of middle cross columns (21) uniformly arranged up and down, one end of each of the middle cross columns (21) is slidably mounted in each of the mounting holes, the other end of each of the middle cross columns (21) is provided with a rectangular groove, each of the inner cross columns (22) is slidably mounted in each of the rectangular grooves, one end of each of the inner cross columns (22) extends out of each of the rectangular grooves, two inner cross columns (22) close to each other are fixedly connected by an outer connecting rod (23), both sides of the inner cross column (22) located in the middle are fixedly mounted with external pressure columns (31), the two external pressure columns (31) are mounted in cooperation with the extrusion mechanism, and a limit position assembly is mounted in the inner cross column (22) located at the bottom.

6. The overhead power line tower concrete pile foundation according to claim 5, characterized in that: The limiting assembly comprises a moving groove (34) formed on the side of the inner transverse column (22); an entry hole is formed on the inner wall of one side of the moving groove (34); an L-shaped fixing rod (28) is slidably mounted in the moving groove (34); one end of the L-shaped fixing rod (28) extends outside the moving groove (34); the other end of the L-shaped fixing rod (28) passes through the entry hole; a limiting hole (35) is formed on the inner wall of the rectangular groove; the limiting hole (35) corresponds to one end of the L-shaped fixing rod (28); a limiting block (26) is fixedly mounted on the side of the inner transverse column (22); the limiting block (26) is A circular hole (29) is provided on the side, a limiting rod (25) is slidably installed in the circular hole (29), one end of the limiting rod (25) is fixedly connected to the side of the L-shaped fixing rod (28), a mounting rod (24) is fixedly installed on the inner wall of the pipe sleeve (1), a limiting groove (33) is provided on the side of the mounting rod (24), the other end of the limiting rod (25) extends into the limiting groove (33), a limiting spring (27) is sleeved on the limiting rod (25), and the two ends of the limiting spring (27) are respectively fixedly installed on the side portions of the L-shaped fixing rod (28) and the limiting block (26) close to each other.

7. The overhead power line tower concrete pile foundation according to claim 5, characterized in that: A friction groove is formed at the bottom of the outer cross column (20), a friction strip (30) is fixedly installed in the friction groove, and the friction strip (30) is in contact with the bottom inner wall of the removal hole (18).

8. The overhead power line tower concrete pile foundation according to claim 6, characterized in that: Two blocking grooves are provided on the side of each outer cross column (20) away from the limiting rod (25), and the two blocking grooves are connected to the corresponding mounting holes. A triangular block (36) is fixedly mounted on the top and bottom of each middle cross column (21), and the sides of the two triangular blocks (36) away from each other are respectively located in the two blocking grooves.

9. The overhead power line tower concrete pile foundation according to claim 5, characterized in that: The extrusion mechanism comprises two long pressure rods (14) and two short pressure rods (15) fixedly mounted on the bottom of the extrusion plate (16); four sliding holes are opened on the top of the fixed plate (17); the bottom ends of the two long pressure rods (14) and the two short pressure rods (15) respectively pass through the four sliding holes and are fixedly mounted with oblique pressure columns (13); the bottom height of the oblique pressure column (13) located at the top is greater than or equal to the top height of the oblique pressure column (13) located at the bottom; the bottoms of the two oblique pressure columns (13) located at the bottom are in contact with the sides of the two inner pressure columns (32) respectively; and the bottoms of the two oblique pressure columns (13) located at the top correspond to the positions of the two outer pressure columns (31) respectively.

10. A construction method for a concrete pile foundation of an overhead power line tower according to any one of claims 1 to 9, characterized in that: The method comprises the following steps: Step 1: When in use, first dig a hole, put the pipe sleeve (1) into the hole, then put the wood on the top of the extrusion plate (16), and hit the wood with a hammer, so that the extrusion plate (16) moves downward, thereby causing the short pressure rod (15) and the extrusion plate (16) to move downward, and the movement of the short pressure rod (15) and the extrusion plate (16) drives the two upper and lower oblique pressure columns (13) to move downward, and the lower oblique pressure column (13) first contacts the inner pressure column (32), thereby squeezing the inner pressure column (32) to move, and the movement of the inner pressure column (32) drives the outer cross column (20) to insert into the soil on the inner wall of the hole, and the outer cross column (20) moves through the two triangular blocks (36) to drive the middle cross column (21) to move, and the inner cross column (22) is limited by the limit rod (25) and the limit groove (33), so that the middle cross column (21) and the inner cross column (22) slide relative to each other; Step 2: When the outer cross column (20) is inserted, the L-shaped fixing rod (28) corresponds to the position of the limiting hole (35), and the limiting spring (27) is in a deformed state. Under the action of the limiting spring (27), one end of the L-shaped fixing rod (28) is inserted into the limiting hole (35) to form a fixed position. The L-shaped fixing rod (28) moves to drive the limiting rod (25) to move out of the limiting groove (33), thereby releasing the limit of the inner cross column (22). At this time, the vertical side of the inner pressure column (32) and the long pressure rod (14) are aligned. The inclined side of the upper oblique pressure column (13) contacts the outer pressure column (31), the extrusion plate (16) continues to be impacted and moves downward to contact the fixed plate (17), the inclined side of the oblique pressure column (13) squeezes the inner cross column (22) to make it move, at this time the inner cross column (22) is connected to the middle cross column (21), the movement of the inner cross column (22) drives the movement of the middle cross column (21), so that the middle cross column (21) moves out of the mounting hole in the outer cross column (20), and continues to be inserted into the soil; Step 3: Finally, bury the gap between the outside of the pipe sleeve (1) and the hole in the soil, put the tower pile (2) in, the slot (3) on the tower pile (2) corresponds to the clamping rod (4), then pass the insertion rod (7) through the insertion hole and nail it into the ground, the inner cross column (22) corresponds to the other clamping rod (4), and the outer side of the rotating sleeve (8) is provided with a wrench groove. By rotating the rotating sleeve (8), the two screw rods (9) can be moved away from each other, so that one clamping rod (4) is inserted into the slot (3) and the other clamping rod (4) is inserted into the inner cross column (22) to form a fixation, and four bolts (6) are screwed into the four threaded holes respectively, so as to further limit the position of the pipe sleeve (1), thereby completing the installation.

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