Safety maintenance device for railway overline approach bridge foundation pile

Abstract

The invention discloses a safety maintenance device for a railway overline approach bridge foundation pile, which comprises a first half cylinder, a second half cylinder, an outer connecting piece, an outer cylinder body, a third half cylinder, a fourth half cylinder, an inner connecting piece, an inner cylinder body, a rotary driving mechanism, a lifting mechanism, an outer controller, an extension seat, a supporting seat, an auger blade, a rib plate, a collecting tank and a discharge port, the first half cylinder and the second half cylinder can be combined into a complete outer cylinder body through an outer connecting piece, and the third half cylinder and the fourth half cylinder can be combined into a complete inner cylinder body through an inner connecting piece. The outer controller controls the lifting mechanism to act, so that the bottom end of the auger blade is attached to the ground, then the rotary driving mechanism is controlled to act, the inner barrel is driven to rotate, soil around a foundation pile can be excavated through the auger blade, rotary excavation is achieved, and soil generated in the excavation process is not prone to falling off. And finally, the material overflows and falls into the collecting tank, and then the material is discharged through the discharging opening.

Description

Technical Field

[0001] This invention relates to the field of foundation pile maintenance technology, and in particular to a safety maintenance device for foundation piles of railway overpass approach bridges. Background Technology

[0002] The shape selection of approach bridge foundation piles mainly takes into account the load characteristics of the approach bridge (relatively smaller than the main bridge, but with a wide distribution range), geological conditions, construction space, and cost. The most common form is cylindrical.

[0003] The maintenance and upkeep of foundation piles requires tailored measures based on the type of damage, environmental conditions, and structural characteristics. These measures primarily include: regular inspection and assessment, corrosion prevention, damage repair, load-bearing capacity reinforcement, and environmental protection. Regarding corrosion prevention, if the concrete protective layer is severely carbonized, the damaged portion must be removed, a new rust inhibitor applied, and the protective layer repaired. Since most foundation piles are underground and covered by soil, appropriate excavation to expose them facilitates further observation, inspection, and maintenance.

[0004] The maintenance of foundation piles for railway overpass approach bridges differs significantly from that of ordinary bridge foundation piles due to the characteristics of the approach bridges bearing train loads (mainly dynamic loads), their proximity to existing lines (potentially adjacent to the main railway line), and the fact that the piles are mostly located in roadbed fill or slope environments. The core considerations are structural safety, railway operational safety, and construction efficiency. First, when excavating soil, the depth and width of the excavation should be minimized, as well as vibration. Furthermore, due to limited space, large and medium-sized excavating equipment cannot easily access the site, so manual excavation is often used. To ensure construction efficiency, multiple workers need to rotate shifts, which is time-consuming and labor-intensive. Second, when peeling off the severely carbonized concrete protective layer for anti-corrosion treatment, vibration should also be minimized. Therefore, low-vibration tools such as hydraulic shears and electric cutting machines are often used for peeling, or high-pressure water jets are used. However, these often require workers to handle the work by hand, which generates a large amount of debris or water splashes, potentially causing injury. Furthermore, it is difficult to collect the wastewater, especially with high-pressure water jets; if the wastewater cannot be discharged promptly and seeps into the foundation, it can affect the stability of the piles. Finally, because workers handle the work by hand, not only is the process inefficient, but it also leads to incomplete and uneven treatment of the pile foundation, resulting in omissions. This highlights the shortcomings of existing technologies. Summary of the Invention

[0005] The purpose of this invention is to provide a safety maintenance device for railway overpass approach bridge foundation piles, so as to solve the technical problems of low efficiency, easy injury to the human body, difficulty in collecting waste, uneven and incomplete treatment in the existing technology during foundation pile maintenance.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A safety maintenance device for railway overpass approach bridge foundation piles includes a first half-cylinder, a second half-cylinder, an outer connector, an outer cylinder, a third half-cylinder, a fourth half-cylinder, an inner connector, an inner cylinder, a rotary drive mechanism, a lifting mechanism, an external controller, an extension seat, a support seat, auger blades, ribs, a collection trough, and a discharge port. The first and second half-cylinders can be combined to form a complete outer cylinder via the outer connector, and the third and fourth half-cylinders can be combined to form a complete inner cylinder via the inner connector. The outer connector can be completely detached from the first and second half-cylinders, allowing them to be completely separated. The inner connector can also be completely detached from the third and fourth half-cylinders, allowing them to be completely separated. The inner cylinder is coaxially and interlocked with the outer cylinder. The rotary drive mechanism can drive the inner cylinder to rotate and can controllably separate from the inner cylinder. The outer cylinder and the inner cylinder are jointly equipped with a lifting mechanism. The rotary drive mechanism and the lifting mechanism are driven by electric power. The lifting mechanism is used to drive the inner cylinder to move up and down and can be controllably separated from the inner cylinder. The first half-cylinder or the second half-cylinder is fixed with an external controller. The external controller is detachably electrically connected to the rotary drive mechanism and the lifting mechanism. The external controller is connected to an external power source. The bottom ends of the third half-cylinder and the fourth half-cylinder are respectively fixed with vertical extension seats. The two extension seats are detachably fastened with support seats by bolts. The two support seats are respectively fixed with auger blades. The two auger blades are centrally symmetrical with respect to the virtual axis of the inner cylinder, and the bottom ends are respectively fixed with vertical ribs. The bottom of the outer cylinder is thin and the middle and upper parts are thick. The bottom and the middle and upper parts are tapered to form a collection groove. The first half-cylinder and the second half-cylinder each have two discharge ports horizontally penetrating through them.

[0007] Based on the above technical solution, the lifting mechanism includes an upper support arm, a first electric push rod, a transmission arm, a guide rod, a transmission rod, a guide seat, an upper insert rod, a support half-circle, a support ring, and a first fastening bolt. A horizontal upper support arm is fixed to the outer wall of the first half-cylinder, and two horizontal upper support arms are fixed to the outer wall of the second half-cylinder. Each upper support arm is set at an equal angle relative to the outer cylinder. A vertical first electric push rod is fixed to each upper support arm. A horizontal transmission arm is fixed to the top of each first electric push rod. Each transmission arm is fixed with a vertical guide rod and a transmission rod. Each guide rod is slidably connected to the upper support arm. A water-cooled... A flat guide seat is provided. Upper insert rods are fixed to the front and rear sections of the third and fourth semi-cylinders, respectively. Each upper insert rod is horizontally arranged in a front-to-back direction. Horizontal support semi-circles are inserted into the third and fourth semi-cylinders via the upper insert rods. After the third and fourth semi-cylinders are assembled into an inner cylinder, the two support semi-circles can be combined to form a complete support ring. The support ring is coaxial with the inner cylinder, and the assembly positions of the support ring and the inner cylinder are staggered. A first-order fastening bolt is inserted through each of the two support semi-circles. The two first-order fastening bolts are threadedly connected to the third and fourth semi-cylinders respectively. The guide seat is horizontally slidably connected to the support ring and can horizontally detach from it.

[0008] Based on the above technical solution, the rotary drive mechanism includes an upper gear ring, an upper gear ring, balls, a reduction motor, and an upper gear. The tops of the two supporting half-rings are respectively fixed with upper gear rings. The two supporting half-rings can be assembled into a complete support ring. After the two supporting half-rings are assembled into a complete support ring, the two upper gear rings are assembled into a complete upper gear ring. Multiple balls are rotatably connected to the upper and lower spherical surfaces of the guide seat. Each ball is arranged circumferentially relative to the virtual axis of the inner cylinder. The balls on the upper part of the guide seat roll and rub against the top of the upper gear ring, and the balls at the bottom of the guide seat roll and rub against the bottom of the support ring. A vertical reduction motor is fixed to one of the guide seats. The shaft of the reduction motor is rotatably connected to the guide seat. An upper gear is coaxially fixed to the shaft of the reduction motor. The upper gear ring meshes with the upper gear. The reduction motor is detachably electrically connected to an external controller. When the reduction motor rotates, the inner cylinder rotates through the meshing of the upper gear ring.

[0009] Based on the above technical solution, the safety maintenance device further includes a spraying mechanism. The spraying mechanism includes a lower insert rod, a half-water tank, a water tank, a second fastening bolt, a cover, a half-cover, an input pipe, an internal controller, a support column, a second electric push rod, a support frame, an upper spray pipe, a lower spray pipe, a nozzle, a sealing plate, and a discharge cylinder. Lower insert rods are fixed to the front and rear ends of the third half-cylinder and the front and rear ends of the fourth half-cylinder. Each lower insert rod is horizontally arranged in a front-rear direction. The third and fourth half-cylinders are respectively connected to horizontal half-water tanks via the lower insert rods. After the two semi-cylinders are assembled into an inner cylinder, they can be combined to form a complete annular water tank. The joining parts of the water tanks and the joining parts of the inner cylinder are staggered. The water tanks and the inner cylinder are coaxially arranged. Each of the two semi-cylinders is connected by a No. 2 fastening bolt, which is threadedly connected to the No. 3 and No. 4 semi-cylinders respectively. The upper part of the water tank is horizontally sealed and rotatably connected to an annular cover, which is composed of two semi-annular covers joined together. The top of each of the two semi-covers is fixedly connected to an input pipe. The bottom of each of the two semi-cylinders is fixedly fitted with an internal controller. The internal controller has a built-in control circuit, battery, and radio transceiver module that are electrically connected to each other. The external controller also has a built-in radio transceiver module that is electrically connected to each other. The external controller and the internal controller transmit radio signals through their respective radio transceiver modules. Vertical support columns are fixed to the bottom of each of the two semi-tanks. Vertical second electric push rods are fixed to each of the two support columns. The two second electric push rods are set at equal angles to the inner cylinder, and horizontal support frames are fixed to the bottom of each push rod. Vertical upper spray pipes are fixed to each of the two support columns. The upper spray pipe is slidably connected to the vertical lower spray pipe, which is connected to the inner cavity of the two half-water tanks. The bottom of the two lower spray pipes is inclined downwards towards the virtual axis of the inner cylinder, and each is threaded with a detachable nozzle. The two second electric push rods are electrically connected to the control circuit of the inner controller. The first and second half-cylinders are each inserted with two sealing plates, which can completely seal and block each discharge port. The first and second half-cylinders are fixedly connected to the discharge cylinders, which are adjacent to the bottom of the collection tank.

[0010] Based on the above technical solution, waterproof electric heaters are fixed at the bottom of the two semi-water tanks respectively, and the two electric heaters are electrically connected to the control circuits of the two internal controllers respectively.

[0011] Based on the above technical solution, the safety maintenance device further includes a suction mechanism. The suction mechanism includes a support cylinder, a No. 3 fastening bolt, a suction cylinder, a discharge cylinder, an auger, a lower gear, a guide rail, a sliding half-cylinder, a sliding cylinder, a No. 4 fastening bolt, a No. 4 fastening nut, a lower half-gear ring, an upper half-baffle, a lower gear ring, an upper baffle, a lower half-baffle, and a lower baffle. Vertical and penetrating support cylinders are fixed to the upper parts of the two auger blades. The outer wall of the support cylinder is also fixed to a rib plate. A horizontal No. 3 fastening bolt is inserted through the support cylinder. Two bolts are used to fasten the suction cylinders, each with a vertical suction cylinder inserted through it. A horizontal discharge cylinder is fixedly connected to the upper part of each suction cylinder, and the top of the discharge cylinder is closed. Each suction cylinder is not lower than the bottom of the auger blades. The outlets of the two discharge cylinders are located directly above the collection tank. Each suction cylinder is rotatably connected to a vertical auger. A lower gear is coaxially fixed to the upper part of the auger shaft. Two bolts are threaded through to the two suction cylinders. Vertical guide rails are fixed to the inner walls of the first and second half-cylinders. The rails are slidably connected to sliding half-cylinders, one above the other. When the first and second half-cylinders are assembled into an outer cylinder, the two sliding half-cylinders can be assembled into a complete sliding cylinder. The two sliding half-cylinders are fastened together using No. 4 fastening bolts and No. 4 fastening nuts. Horizontal lower gear rings are fixed to the bottom of each of the two sliding half-cylinders, and horizontal upper baffles are fixed to their upper parts. When the two sliding half-cylinders are assembled into a sliding cylinder, the two lower gear rings can be assembled into a complete annular lower gear ring. When the cylinder is assembled into a sliding cylinder, the two upper half baffles can be assembled into a complete annular upper baffle. The lower gear ring and the upper baffle are respectively coaxially arranged with the inner cylinder. The lower gear ring meshes with two lower gears. The upper baffle is in contact with the outer circumferential wall of the water tank. The upper and lower ends of the two lower gear rings are respectively fixed with horizontal lower half baffles. The lower half baffles at the upper and lower ends of the two lower gear rings can be assembled into two complete annular lower baffles. The two lower gears can be interlocked in the gap between the two lower baffles to maintain meshing with the lower gear ring.

[0012] Based on the above technical solution, three horizontal lower support arms are fixed at equal angles around the bottom outer wall of the outer cylinder. Each lower support arm is fixed with a vertical lower electric push rod. Each lower electric push rod is fixed with a horizontal support plate. Each support plate has a vertical ground plug at its bottom end. Each lower electric push rod is detachably electrically connected to the external controller.

[0013] Based on the above technical solution, the external connector includes an external insertion rod, an external protrusion, and an external insertion hole. The two external insertion rods are vertically inserted into the first and second half-cylinders simultaneously. The top ends of the two external insertion rods are respectively fixed with external protrusions, and the two external protrusions are horizontally inserted through the external insertion holes. The internal connector includes an internal insertion rod, an internal protrusion, and an internal insertion hole. The two internal insertion rods are vertically inserted into the third and fourth half-cylinders simultaneously. The top ends of the two internal insertion rods are respectively fixed with internal protrusions, and the two internal protrusions are horizontally inserted through the internal insertion holes.

[0014] Based on the above technical solution, vertical insert plates are fixed at the bottom of the two extension seats respectively, and the two insert plates are respectively inserted into the two support seats vertically.

[0015] Compared with the prior art, the present invention has the following advantages: The present invention controls the lifting mechanism to make the bottom of the auger blades fit with the ground by using an external controller. Then, it controls the rotation drive mechanism to drive the inner cylinder to rotate, so that the auger blades can be used to dig the soil around the foundation pile, that is, to realize rotary digging. The soil generated during the digging process can move upward along the auger blades and eventually overflow into the collection trough, and then be discharged through the discharge port. This digging mode generates less vibration and is more time-saving, labor-saving and efficient than manual digging. The inner cylinder is driven to rotate by a rotary drive mechanism, and high-pressure water is injected into the input pipe. The high-pressure water then sprays out through the water tank, upper spray pipe, lower spray pipe, and nozzles to spray the surface of the foundation pile, thereby peeling off the protective layer of severely carbonized concrete. As the inner cylinder rotates, the spray position changes circumferentially. By controlling the extension and retraction of the second electric push rod, the lower spray pipe can move up and down relative to the upper spray pipe, thus changing the height of the nozzle relative to the inner cylinder. This allows for spraying at different heights on the foundation pile, resulting in a comprehensive and uniform treatment of the foundation pile surface. The height of the nozzle relative to the foundation pile can also be changed by controlling the lifting mechanism. As the inner cylinder rotates, the auger blades transport the generated wastewater and peeled waste upwards, eventually entering the collection tank and being discharged from the discharge pipe. This ensures timely collection of wastewater and waste while preventing further splashing that could cause harm to personnel. By activating the electric heater and continuously injecting compressed air into the input pipe, hot air can be blown onto the pile to dry the surface of the pile, which facilitates the subsequent spraying of anti-corrosion agent and improves work efficiency. The rotating inner cylinder allows the suction cylinder and discharge cylinder to move circumferentially. By engaging the lower gear ring and the lower gear, the auger rotates inside the suction cylinder, thereby sucking up the sewage between the outer and inner cylinders and discharging it into the collection tank through the discharge cylinder. This accelerates the collection of sewage, reduces sewage infiltration, and minimizes negative impacts on the foundation. By installing an upper baffle, it can further prevent sewage from overflowing from above or waste from splashing upwards, improving the protection for personnel. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the isometric structure of the present invention.

[0017] Figure 2 This is a schematic diagram of the isometric structure after separating the second half-cylinder according to the present invention.

[0018] Figure 3 This is a schematic diagram of the left side structure after the first half-cylinder of the present invention has been separated.

[0019] Figure 4 This is a partially enlarged structural diagram of point A in the present invention.

[0020] Figure 5 This is an exploded view of the support ring, water tank, and sliding half-cylinder of the present invention.

[0021] Figure 6 This is a schematic diagram showing the cooperation between the support base and the insert plate of the present invention.

[0022] Figure 7 This is a front cross-sectional view of the sliding cylinder of the present invention.

[0023] In the diagram: 1. No. 1 half-cylinder, 2. No. 2 half-cylinder, 4. Outer cylinder, 5. No. 3 half-cylinder, 6. No. 4 half-cylinder, 8. Inner cylinder, 11. External controller, 12. Extension seat, 13. Support seat, 14. Screwdriver blade, 15. Rib plate, 16. Collection trough, 17. Discharge port, 18. Upper support arm, 19. No. 1 electric push rod, 20. Transmission arm, 21. Guide rod, 22. Transmission rod, 23. 24. Guide seat, upper insert rod, 25. Support half-circle, 26. Support ring, 27. No. 1 fastening bolt, 28. Upper half gear ring, 29. Upper gear ring, 30. Ball bearing, 31. Gear motor, 32. Upper gear, 34. Lower insert rod, 35. Half water tank, 36. Water tank, 37. No. 2 fastening bolt, 38. Cover, 39. Half cover, 40. Input pipe, 41. Internal controller, 42. Support Column, 43. No. 2 electric push rod, 44. Support frame, 45. Upper water spray pipe, 46. Lower water spray pipe, 47. Nozzle, 48. Sealing plate, 49. Discharge cylinder, 50. Electric heater, 51. Support cylinder, 52. No. 3 fastening bolt, 53. Suction cylinder, 54. Discharge cylinder, 55. Screw conveyor, 56. Lower gear, 57. Guide rail, 58. Sliding half cylinder, 59. Sliding cylinder, 60. No. 4 fastening bolt 61. Bolt, No. 4 fastening nut, 62. Lower half gear ring, 63. Upper half baffle, 64. Lower gear ring, 65. Upper baffle, 66. Lower half baffle, 67. Lower baffle, 68. Lower support arm, 69. Lower electric push rod, 70. Support plate, 71. Ground plug, 72. Outer plug rod, 73. Outer protrusion, 74. Outer insertion hole, 75. Inner plug rod, 76. Inner protrusion, 77. Inner insertion hole, 78. Insert plate. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0025] like Figures 1-7As shown, a safety maintenance device for railway overpass approach bridge foundation piles includes a first half-cylinder 1, a second half-cylinder 2, an outer connector, an outer cylinder 4, a third half-cylinder 5, a fourth half-cylinder 6, an inner connector, an inner cylinder 8, a rotary drive mechanism, a lifting mechanism, an outer controller 11, an extension seat 12, a support seat 13, an auger blade 14, a rib plate 15, a collection trough 16, and a discharge port 17. The first half-cylinder 1 and the second half-cylinder 2 can be combined into a complete outer cylinder 4 via the outer connector. The third half-cylinder... The inner cylinder 8 can be assembled from the No. 5 and No. 4 half-cylinders 6 via an internal connector. The external connector can be completely detached from the No. 1 and No. 2 half-cylinders 1 and 2, allowing them to be completely separated. Similarly, the internal connector can be completely detached from the No. 3, No. 5, and No. 4 half-cylinders 6, allowing them to be completely separated. The inner cylinder 8 is coaxially and interlocked with the outer cylinder 4. The rotary drive mechanism can drive the inner cylinder 8 to rotate and can controllably interact with the inner cylinder 8. The outer cylinder 4 and the inner cylinder 8 are both equipped with a lifting mechanism. The rotary drive mechanism and the lifting mechanism are driven by electrical energy. The lifting mechanism is used to drive the inner cylinder 8 to move up and down and can controllably separate from the inner cylinder 8. The first half-cylinder 1 or the second half-cylinder 2 is fixed with an external controller 11. The external controller 11 is detachably electrically connected to the rotary drive mechanism and the lifting mechanism. The external controller 11 is connected to an external power supply. The bottom ends of the third half-cylinder 5 and the fourth half-cylinder 6 are respectively A vertical extension seat 12 is fixed, and the two extension seats 12 are detachably fastened to a support seat 13 by bolts. The two support seats 13 are respectively fixed with auger blades 14. The two auger blades 14 are centrally symmetrical about the virtual axis of the inner cylinder 8, and vertical ribs 15 are respectively fixed at their bottom ends. The outer cylinder 4 is thin at the bottom and thick in the middle and upper part, and the bottom and middle and upper parts are tapered to form a collection groove 16. The first half cylinder 1 and the second half cylinder 2 are respectively horizontally penetrating two discharge ports 17.

[0026] In use, the inner cylinder 8 and outer cylinder 4 are first disassembled by removing the outer and inner connectors, separating the first half-cylinder 1, the second half-cylinder 2, the third half-cylinder 5, and the fourth half-cylinder 6. The rotary drive mechanism and the lifting mechanism are then separated. The third half-cylinder 5 and the fourth half-cylinder 6 are then positioned around the foundation pile, with the two auger blades 14 surrounding the pile. The third half-cylinder 5 and the fourth half-cylinder 6 are connected and assembled using the inner connectors to form the complete inner cylinder 8. Then, the first half-cylinder 1 and the second half-cylinder 2 are connected and assembled using the outer connectors to form the complete outer cylinder 4. The bottom of the outer cylinder 4 is then flush with the ground, and the rotary drive mechanism and the lifting mechanism are respectively connected to the inner cylinder. The inner cylinder 8 is fitted together, and then the lifting mechanism is controlled by the external controller 11 to make the bottom of the auger blade 14 fit with the ground. Then, the rotation drive mechanism is controlled to drive the inner cylinder 8 to rotate, so that the auger blade 14 can be used to dig the soil around the foundation pile, that is, to realize rotary digging. The soil generated during the digging process can move upward along the auger blade 14 and eventually overflow into the collection trough 16, and then be discharged through the discharge port 17. This digging mode generates less vibration and is more time-saving, labor-saving and efficient than manual digging. After the digging is completed, the lifting mechanism is controlled to lift the inner cylinder 8 upward and separate it from the pit. Then the inner cylinder 8 and the outer cylinder 4 can be separated.

[0027] The lifting mechanism includes an upper support arm 18, a first electric push rod 19, a transmission arm 20, a guide rod 21, a transmission rod 22, a guide seat 23, an upper insert rod 24, a support half-circle 25, a support ring 26, and a first fastening bolt 27. A horizontal upper support arm 18 is fixed to the outer wall of the first half-cylinder 1, and two horizontal upper support arms 18 are fixed to the outer wall of the second half-cylinder 2. Each upper support arm 18 is circumferentially angled relative to the outer cylinder 4. A vertical first electric push rod 19 is fixed to each upper support arm 18. A horizontal transmission arm 20 is fixed to the top of each first electric push rod 19. Each transmission arm 20 is fixed with a vertical guide rod 21 and a transmission rod 22. Each guide rod 21 is slidably connected to the upper support arm 18. A horizontal guide rod 22 is fixed to the bottom of each transmission rod 22. The guide seat 23 has upper insert rods 24 fixed to the front and rear parts of the third half-cylinder 5 and the fourth half-cylinder 6, respectively. Each upper insert rod 24 is horizontally arranged in the front-rear direction. The third half-cylinder 5 and the fourth half-cylinder 6 are respectively connected to horizontal support half-rings 25 through the upper insert rods 24. After the third half-cylinder 5 and the fourth half-cylinder 6 are assembled into the inner cylinder 8, the two support half-rings 25 can be assembled into a complete support ring 26. The support ring 26 is coaxially arranged with the inner cylinder 8. The assembly position of the support ring 26 is staggered with the assembly position of the inner cylinder 8. The two support half-rings 25 are respectively inserted through and fastened with first-number bolts 27. The two first-number fastening bolts 27 are respectively threaded through and connected to the third half-cylinder 5 and the fourth half-cylinder 6. The guide seat 23 is horizontally slidably connected to the support ring 26 and can be horizontally disengaged from the support ring 26.

[0028] Furthermore, when disassembling the inner cylinder 8 and the outer cylinder 4, the outer cylinder 4 is disassembled first, and then the guide seat 23 is horizontally separated from the support ring 26. Then, the first fastening bolt 27 is removed, and the support half-ring 25 is manually disengaged from the upper insertion rod 24. The inner cylinder 8 can then be disassembled. Assembly is performed by following the reverse steps. Because the splicing positions of the support ring 26 and the inner cylinder 8 are staggered, they provide support for the splicing of the inner cylinder 8, making the splicing of the inner cylinder 8 more stable. The external controller 11 controls each of the first electric push rods 19 to... The telescoping mechanism allows each guide seat 23 to move up and down synchronously, thereby enabling the support ring 26, inner cylinder 8, and auger blades 14 to move up and down, ensuring downward rotary drilling operations. The sliding connection between the guide seat 23 and the support ring 26 ensures the stability of the inner cylinder 8's rotation. To further improve the synchronicity of the telescoping of the first electric push rod 19, a distance sensor can be used to measure the degree of telescoping and then perform dynamic compensation; alternatively, an electric push rod with a built-in encoder can be selected to maintain the accuracy of telescoping. These are known conventional techniques and will not be described in detail.

[0029] The rotary drive mechanism includes an upper gear ring 28, an upper gear ring 29, ball bearings 30, a reduction motor 31, and an upper gear 32. The top ends of the two supporting semi-rings 25 are respectively fixed with upper gear rings 28. The two supporting semi-rings 25 can be assembled into a complete supporting ring 26. After the two supporting semi-rings 25 are assembled into a complete supporting ring 26, the two upper gear rings 28 are assembled into a complete upper gear ring 29. Multiple ball bearings 30 are rotatably connected to the upper and lower spherical surfaces of the guide seat 23. Each ball bearing 30 is arranged circumferentially relative to the virtual axis of the inner cylinder 8. The ball bearings 30 on the upper part of the guide seat 23... The ball bearing 30 at the bottom of the guide seat 23 rolls and rubs against the top of the upper gear ring 29, and the ball bearing 30 at the bottom of the guide seat 23 rolls and rubs against the bottom of the support ring 26. A vertical reduction motor 31 is fixed to the guide seat 23. The shaft of the reduction motor 31 is rotatably connected to the guide seat 23. An upper gear 32 is coaxially fixed to the shaft of the reduction motor 31. The upper gear ring 29 meshes with the upper gear 32. The reduction motor 31 is detachably electrically connected to the external controller 11. When the reduction motor 31 rotates, the inner cylinder 8 can rotate through the meshing of the upper gear 32 and the upper gear ring 29.

[0030] Furthermore, by utilizing the rolling friction between the ball bearing 30 and the support ring 26 and the upper gear ring 29, the support ring 26 experiences less wear compared to the guide seat 23 when sliding. When the guide seat 23 and the support ring 26 are horizontally inserted, the upper gear ring 29 can mesh with the upper gear 32. Similarly, when the guide seat 23 disengages from the support ring 26, the upper gear ring 29 also disengages from the upper gear 32. By controlling the reduction motor 31 to rotate through the external controller 11, the inner cylinder 8 can be rotated by utilizing the meshing of the upper gear 32 and the upper gear ring 29.

[0031] The safety maintenance device also includes a spraying mechanism, which includes a lower insert rod 34, a half-water tank 35, a water tank 36, a second fastening bolt 37, a cover 38, a half-cover 39, an input pipe 40, an internal controller 41, a support column 42, a second electric push rod 43, a support frame 44, an upper spray pipe 45, a lower spray pipe 46, a nozzle 47, a sealing plate 48, and a discharge cylinder 49. The front and rear ends of the third half-cylinder 5 and the front and rear ends of the fourth half-cylinder 6 are each fixed with a lower insert rod 34. Each lower insert rod 34 is horizontally arranged in the front-rear direction. The third half-cylinder 5 and the fourth half-cylinder 6 are respectively connected to horizontal half-water tanks 35 via the lower insert rods 34. After the four semi-cylinders 6 are assembled into the inner cylinder 8, the two semi-water tanks 35 can be assembled into a complete annular water tank 36. The assembly parts of the water tank 36 and the assembly parts of the inner cylinder 8 are staggered. The water tank 36 and the inner cylinder 8 are coaxially arranged. Two fastening bolts 37 are inserted through each of the two semi-water tanks 35. The two fastening bolts 37 are threaded through and connected to the three semi-cylinders 5 and the four semi-cylinders 6, respectively. The upper part of the water tank 36 is horizontally sealed and rotatably connected to an annular cover 38. The cover 38 is composed of two semi-annular covers 39. The tops of the two semi-covers 39 are respectively fixedly connected to an inlet pipe 40. The bottoms of the two semi-water tanks 35 are respectively fixed with an internal control. The controller 41 has an internal controller 41 with a built-in control circuit, a battery, and a radio transceiver module that are electrically connected to each other. The external controller 11 also has a built-in radio transceiver module that is electrically connected to each other. The external controller 11 and the internal controller 41 transmit radio signals through their respective radio transceiver modules. The bottom ends of the two semi-water tanks 35 are respectively fixed with vertical support columns 42. The two support columns 42 are respectively fixed with vertical second electric push rods 43. The two second electric push rods 43 are set at equal angles to the inner cylinder 8, and the bottom ends of their push rods are respectively fixed with horizontal support frames 44. The two support columns 42 are respectively fixed with vertical upper water spray pipes 45. The upper spray pipe 45 is slidably connected to the vertical lower spray pipe 46, which is connected to the inner cavity of the two half-water tanks 35. The bottom of the two lower spray pipes 46 are inclined downwards towards the virtual axis of the inner cylinder 8, and are threadedly connected to the detachable nozzles 47. The two second electric push rods 43 are electrically connected to the control circuit of the inner controller 41. The first half-cylinder 1 and the second half-cylinder 2 are respectively inserted with two sealing plates 48, which can completely seal and block each discharge port 17. The first half-cylinder 1 and the second half-cylinder 2 are respectively fixedly connected to the output discharge cylinders 49, which are adjacent to the bottom of the collection tank 16.

[0032] Furthermore, before disassembling the inner cylinder 8, in addition to disassembling the support ring 26, the water tank 36 also needs to be disassembled. First, move the cover 38 so that the joint of the two half-covers 39 is aligned with the joint of the two half-water tanks 35. Then, remove the second fastening bolt 37, and then manually pull the half-water tank 35 to detach it from the lower insertion rod 34. After disassembly, the half-covers 39 can also be manually pushed to detach them from the half-water tank 35, making it easier to clean the inside of the half-water tank 35. When assembling the water tank 36, first assemble the inner cylinder 8, and then fully assemble the half-water tank 35 with the cover 38. To facilitate this, the water tank 36 and the lower insertion rod 34 are inserted together, and then the second fastening bolt 37 is reinstalled. Once the required rotary drilling depth is reached, the lifting mechanism is stopped. The input pipe 40 is then connected to a pressurized water source (e.g., a water pump) via a pipeline. The discharge port 17 is sealed using the sealing plate 48. The sewage pipe is then connected to the discharge port 17. The inner cylinder 8 is then rotated using the rotary drive mechanism, and high-pressure water is injected into the input pipe 40. This allows the high-pressure water to be sprayed through the water tank 36, the upper spray pipe 45, the lower spray pipe 46, and the nozzle 47, thus achieving surface treatment of the foundation piles. The spraying process involves spraying onto the surface of the pile to remove the protective layer from severely carbonized concrete. As the inner cylinder 8 rotates, the spraying position changes circumferentially. By controlling the extension and retraction of the second electric push rod 43 (controlled via radio signal transmission between the external controller 11 and the internal controller 41), the lower spray pipe 46 can move up and down relative to the upper spray pipe 45, thereby changing the height of the nozzle 47 relative to the inner cylinder 8. This allows for spraying at different heights on the pile, resulting in a comprehensive and uniform treatment of the pile surface. Furthermore, by controlling the lifting mechanism, the position of the nozzle 47 relative to the pile can also be adjusted. The height; while the inner cylinder 8 rotates, the auger blades 14 can transport the generated sewage and stripped waste upwards, and finally enter the collection tank 16 and be discharged from the discharge cylinder 49, which can realize the timely collection of sewage and waste, and at the same time avoid the harm to the human body caused by further splashing; by changing different types of nozzles 47, the water jet state can be adjusted, and when only the excavated soil is discharged, the sealing plate 48 can be pulled upwards to open the discharge port 17. In order to further improve the sealing effect and reduce water leakage, when assembling the water tank 36, a sealing agent can be applied to the joint.

[0033] Waterproof electric heaters 50 are fixed to the bottom of the two semi-water tanks 35 respectively, and the two electric heaters 50 are electrically connected to the control circuits of the two internal controllers 41 respectively.

[0034] Furthermore, after stripping the severely carbonized concrete protective layer from the pile surface, the input pipe 40 is changed to connect to an external compressed air source (such as the output end of an air compressor). Then, by starting the electric heater 50 (controlled by the transmission of radio signals between the external controller 11 and the internal controller 41) and continuously injecting compressed air into the input pipe 40, hot air is blown onto the pile to dry its surface, facilitating subsequent spraying of anti-corrosion agents and improving work efficiency. By changing the circumferential position and height of the nozzle 47 according to the high-pressure water jet spray method, the spray position of the hot air onto the pile can be changed, thus making the drying more uniform and comprehensive.

[0035] The safety maintenance device also includes a suction mechanism, which includes a support cylinder 51, a No. 3 fastening bolt 52, a suction cylinder 53, a discharge cylinder 54, an auger 55, a lower gear 56, a guide rail 57, a sliding half-cylinder 58, a sliding cylinder 59, a No. 4 fastening bolt 60, a No. 4 fastening nut 61, a lower half-gear ring 62, an upper half-baffle 63, a lower gear ring 64, an upper baffle 65, a lower half-baffle 66, and a lower baffle 67. Vertical and penetrating support cylinders 51 are fixed to the upper parts of the two auger blades 14 respectively. The outer wall of the support cylinder 51 is also fixed to the rib plate 15. A horizontal No. 3 fastening bolt is inserted through the support cylinder 51. Two bolts 52 are used to fasten vertical suction cylinders 53, each with a horizontal discharge cylinder 54 fixedly connected to its upper part and a closed top. The suction cylinders 53 are not lower than the bottom of the auger blades 14. The outlets of the two discharge cylinders 54 are located directly above the collection tank 16. Each suction cylinder 53 is rotatably connected to a vertical auger 55. A lower gear 56 is coaxially fixed to the upper part of the auger 55's shaft. Two bolts 52 are threadedly connected to the two suction cylinders 53. Vertical guide rails 57 are fixed to the inner walls of the first and second half-cylinders 1 and 2, respectively. 7. Sliding half-cylinders 58 are connected vertically and vertically respectively. When the first half-cylinder 1 and the second half-cylinder 2 are assembled into the outer cylinder 4, the two sliding half-cylinders 58 can be assembled into a complete sliding cylinder 59. When the two sliding half-cylinders 58 are assembled into the sliding half-cylinder 58, they are fastened together by a fourth-grade fastening bolt 60 and a fourth-grade fastening nut 61. Horizontal lower half-tooth rings 62 are fixed to the bottom of each of the two sliding half-cylinders 58, and horizontal upper half-baffles 63 are fixed to the upper part of each. When the two sliding half-cylinders 58 are assembled into the sliding cylinder 59, the two lower half-tooth rings 62 can be assembled into a complete annular lower tooth ring 64. When assembled into a sliding cylinder 59, the two upper half baffles 63 can be assembled into a complete annular upper baffle 65. The lower gear ring 64 and the upper baffle 65 are respectively coaxially arranged with the inner cylinder 8. The lower gear ring 64 meshes with two lower gears 56. The upper baffle 65 is in contact with the outer circumferential wall of the water tank 36. The upper and lower ends of the two lower gear rings 62 are respectively fixed with horizontal lower half baffles 66. The lower half baffles 66 at the upper and lower ends of the two lower gear rings 62 can be assembled into two complete annular lower baffles 67. The two lower gears 56 can be interlocked in the gap between the two lower baffles 67 to maintain meshing with the lower gear ring 64.

[0036] Furthermore, before assembling the outer cylinder 4, the sliding half-cylinder 58 is assembled using the No. 4 fastening bolt 60 and the No. 4 fastening nut 61; correspondingly, if the outer cylinder 4 needs to be disassembled, the No. 4 fastening bolt 60 and the No. 4 fastening nut 61 should be removed first, allowing the sliding cylinder 59 to be disassembled; by utilizing the horizontal movement of the lower gear ring 64 relative to the lower gear 56, the lower gear ring 64 and the lower gear 56 can be meshed when assembling the sliding cylinder 59, and separated when disassembling the sliding cylinder 59; due to the high fluidity of sewage, when using high-pressure water flow to peel off the protective layer, sewage easily fills the space between the inner cylinder 8 and the outer cylinder 4. While using the auger blades 14 to drain the water, the rotating inner cylinder 8 can also cause the suction cylinder 53 and the discharge cylinder 54 to move circumferentially, thereby By utilizing the meshing of the lower gear ring 64 and the lower gear 56, the auger 55 rotates within the suction cylinder 53, thereby sucking up the sewage between the outer cylinder 4 and the inner cylinder 8 and discharging it through the discharge cylinder 54 into the collection tank 16. This accelerates the collection of sewage, reduces sewage infiltration, and minimizes the negative impact on the foundation. By setting the lower baffle 67, the lower gear 56 is stably positioned between the upper and lower baffles 67. This allows the sliding cylinder 59 to move up and down relative to the outer cylinder 4, ensuring the meshing of the lower gear ring 64 and the lower gear 56. When the sliding cylinder 59 is disassembled, the lower gear ring 64 disengages from the lower gear 56. The upper baffle 65 further prevents sewage from overflowing from above or waste from splashing upwards, improving the protection for the human body.

[0037] The outer cylinder 4 has three horizontal lower support arms 68 fixed at equal angles around its bottom outer wall. Each lower support arm 68 is fixed with a vertical lower electric push rod 69. Each lower electric push rod 69 is fixed with a horizontal support plate 70. Each support plate 70 has a vertical ground plug 71 fixed at its bottom end. Each lower electric push rod 69 is detachably electrically connected to the external controller 11.

[0038] Furthermore, since the ground around the piles may not be level or may not be perpendicular to the axial direction of the piles, after the outer cylinder 4 is assembled, the angle of the outer cylinder 4 can be adjusted by controlling the extension and retraction of the lower electric push rod 69 to make the support plate 70 contact the ground. This allows the outer cylinder 4 to be as close to the ground as possible, or the gaps can be filled with soil. The position of the outer cylinder 4 can be limited by inserting the ground plug 71 into the foundation, preventing it from rotating. This makes maintenance work more convenient and reliable, and improves work efficiency.

[0039] The external connector includes an external insertion rod 72, an external protrusion 73, and an external insertion hole 74. The two external insertion rods 72 are vertically inserted into the first half-cylinder 1 and the second half-cylinder 2, respectively. The top ends of the two external insertion rods 72 are respectively fixed with external protrusions 73, and the two external protrusions 73 are respectively horizontally inserted through the external insertion hole 74. The internal connector includes an internal insertion rod 75, an internal protrusion 76, and an internal insertion hole 77. The two internal insertion rods 75 are vertically inserted into the third half-cylinder 5 and the fourth half-cylinder 6, respectively. The top ends of the two internal insertion rods 75 are respectively fixed with internal protrusions 76, and the two internal protrusions 76 are respectively horizontally inserted through the internal insertion hole 77.

[0040] By setting the inner insertion hole 77 and the outer insertion hole 74, it is convenient to use a traction object (such as a hook or rope) to pull the outer protrusion 73 and the inner protrusion 76 upward, so as to achieve the separation from the first half-cylinder 1, the second half-cylinder 2, the third half-cylinder 5 and the fourth half-cylinder 6. By setting the outer protrusion 73 and the inner protrusion 76, it is possible to prevent the outer insertion rod 72 and the inner insertion rod 75 from accidentally separating from the first half-cylinder 1, the second half-cylinder 2, the third half-cylinder 5 and the fourth half-cylinder 6 from top to bottom, thus ensuring the stability of the splicing of the outer cylinder 4 and the inner cylinder 8.

[0041] The bottom ends of the two extension seats 12 are respectively fixed with vertical insert plates 78, and the two insert plates 78 are respectively inserted into the two support seats 13 vertically.

[0042] Furthermore, by setting the insert plate 78, the support effect on the support seat 13 can be improved, thereby improving the positional stability of the auger blade 14 relative to the extension seat 12, making the auger blade 14 more stable when digging. The extension seat 12 and the support seat 13 are detachably fastened with bolts, which facilitates the replacement of the auger blade 14, the support seat 13 and the rib plate 15 as a whole, thereby adapting to foundation piles of different thicknesses and improving adaptability.

[0043] The external controller 11 and internal controller 41 mentioned above are known prior art, such as microcontrollers, and the detachable electrical connection with the external controller 11 and internal controller 41 is also known prior art, such as using plug and socket to achieve electrical connection.

[0044] The above description represents a preferred embodiment of the present invention. For those skilled in the art, any changes, modifications, substitutions, and variations made to the implementation methods without departing from the principles and spirit of the present invention, based on the teachings of the present invention, still fall within the protection scope of the present invention.

Claims

1. A safety maintenance device for railway overpass approach bridge foundation piles, comprising a first half-cylinder (1), a second half-cylinder (2), an outer connector, an outer cylinder (4), a third half-cylinder (5), a fourth half-cylinder (6), an inner connector, an inner cylinder (8), a rotary drive mechanism, a lifting mechanism, an outer controller (11), an extension seat (12), a support seat (13), an auger blade (14), a rib plate (15), a collection trough (16), and a discharge port (17), characterized in that: The first half-cylinder (1) and the second half-cylinder (2) can be combined into a complete outer cylinder (4) through an external connector. The third half-cylinder (5) and the fourth half-cylinder (6) can be combined into a complete inner cylinder (8) through an internal connector. The external connector can be completely detached from the first half-cylinder (1) and the second half-cylinder (2), allowing the first half-cylinder (1) and the second half-cylinder (2) to be completely separated. The internal connector can be completely detached from the third half-cylinder (5) and the fourth half-cylinder (6), allowing the third half-cylinder (5) and the fourth half-cylinder (6) to be completely separated. The inner cylinder (8) and the outer cylinder (4) are coaxially and interlocked. The rotary drive mechanism can drive the inner cylinder (8) to rotate and can be controllably separated from the inner cylinder (8). The outer cylinder (4) and the inner cylinder (8) are jointly equipped with a lifting mechanism. The rotary drive mechanism and the lifting mechanism are driven by electric power. The lifting mechanism is used to drive the inner cylinder (8) up and down. The cylinder is movable and controllably separable from the inner cylinder (8). The first half-cylinder (1) or the second half-cylinder (2) is fixed with an external controller (11). The external controller (11) is detachably electrically connected to the rotary drive mechanism and the lifting mechanism. The external controller (11) is connected to an external power supply. The bottom ends of the third half-cylinder (5) and the fourth half-cylinder (6) are respectively fixed with vertical extension seats (12). The two extension seats (12) are detachably fastened with bolts for support. The two support seats (13) are respectively fixed with auger blades (14). The two auger blades (14) are centrally symmetrical about the virtual axis of the inner cylinder (8), and vertical ribs (15) are fixed at the bottom. The outer cylinder (4) is thin at the bottom and thick in the middle and upper part, and the bottom and the middle and upper part are tapered to form a collection groove (16). The first half cylinder (1) and the second half cylinder (2) are respectively horizontally penetrating two discharge ports (17).

2. The safety maintenance device for railway overpass approach bridge foundation piles according to claim 1, characterized in that: The lifting mechanism includes an upper support arm (18), a first electric push rod (19), a transmission arm (20), a guide rod (21), a transmission rod (22), a guide seat (23), an upper insert rod (24), a support half-circle (25), a support ring (26), and a first fastening bolt (27). A horizontal upper support arm (18) is fixed to the outer wall of the first half-cylinder (1), and two horizontal upper support arms (18) are fixed to the outer wall of the second half-cylinder (2). Each of the upper support arms (18)... Compared to the outer cylinder (4) which is arranged at equal angles around its circumference, each of the upper support arms (18) is fixed with a vertical first electric push rod (19). The top of each first electric push rod (19) is fixed with a horizontal transmission arm (20). Each transmission arm (20) is fixed with a vertical guide rod (21) and a transmission rod (22). Each guide rod (21) is slidably connected to the upper support arm (18) and the bottom of each transmission rod (22) is fixed with a horizontal... The guide seat (23) has upper insert rods (24) fixed to the front and rear parts of the third half cylinder (5) and the front and rear parts of the fourth half cylinder (6). Each of the upper insert rods (24) is horizontally arranged in the front and rear direction. The third half cylinder (5) and the fourth half cylinder (6) are respectively connected to horizontal support half rings (25) through the upper insert rods (24). After the third half cylinder (5) and the fourth half cylinder (6) are assembled into the inner cylinder body (8), the two support half rings (25) can be assembled into a complete support ring (2). 6) The support ring (26) is coaxially arranged with the inner cylinder (8). The splicing position of the support ring (26) and the splicing position of the inner cylinder (8) are staggered. The two support half rings (25) are respectively inserted with a first fastening bolt (27). The two first fastening bolts (27) are respectively threadedly connected to the third half cylinder (5) and the fourth half cylinder (6). The guide seat (23) is horizontally slidably connected to the support ring (26) and can be horizontally disengaged from the support ring (26).

3. The safety maintenance device for railway overpass approach bridge foundation piles according to claim 2, characterized in that: The rotary drive mechanism includes an upper gear ring (28), an upper gear ring (29), balls (30), a reduction motor (31), and an upper gear (32). The top ends of the two supporting half rings (25) are respectively fixed with upper gear rings (28). The two supporting half rings (25) can be assembled into a complete supporting ring (26). After the two supporting half rings (25) are assembled into a complete supporting ring (26), the two upper gear rings (28) are assembled into a complete upper gear ring (29). The upper and lower parts of the guide seat (23) are rotatably connected to multiple balls (30). Each ball (30) is arranged in a circle relative to the virtual axis of the inner cylinder (8). The balls (30) on the upper part of the guide seat (23) are rotatably connected to multiple balls (30). 0) The ball (30) at the bottom of the guide seat (23) rolls and rubs against the top of the upper gear ring (29). The ball (30) at the bottom of the guide seat (23) rolls and rubs against the bottom of the support ring (26). The guide seat (23) is fixed with a vertical speed reduction motor (31). The shaft of the speed reduction motor (31) is rotatably connected to the guide seat (23). The shaft of the speed reduction motor (31) is coaxially fixed with an upper gear (32). The upper gear ring (29) meshes with the upper gear (32). The speed reduction motor (31) is detachably electrically connected to the external controller (11). When the speed reduction motor (31) rotates, the inner cylinder (8) can rotate through the meshing of the upper gear (32) and the upper gear ring (29).

4. The safety maintenance device for railway overpass approach bridge foundation piles according to claim 1, characterized in that: The safety maintenance device also includes a spraying mechanism, which includes a lower insert rod (34), a half-water tank (35), a water tank (36), a second fastening bolt (37), a cover (38), a half-cover (39), an input pipe (40), an internal controller (41), a support column (42), a second electric push rod (43), a support frame (44), an upper spray pipe (45), a lower spray pipe (46), a nozzle (47), a sealing plate (48), and a discharge cylinder (49). The front and rear parts of the third half-cylinder (5) and the front and rear parts of the fourth half-cylinder (6) are each fixed with a lower insert rod (34). Each of the lower insert rods (34) is horizontally arranged in the front and rear direction. The third half-cylinder (5) and the fourth half-cylinder (6) are connected by the lower insert rods (34). A horizontal semi-water trough (35) is inserted at the front and back. The third semi-cylinder (5) and the fourth semi-cylinder (6) are assembled into an inner cylinder (8). The two semi-water troughs (35) can be assembled into a complete ring-shaped water trough (36). The assembly part of the water trough (36) and the assembly part of the inner cylinder (8) are staggered. The water trough (36) and the inner cylinder (8) are coaxially arranged. The two semi-water troughs (35) are respectively inserted with second-order fastening bolts (37). The two second-order fastening bolts (37) are respectively threaded to the third semi-cylinder (5) and the fourth semi-cylinder (6). The upper part of the water trough (36) is horizontally sealed and rotatably connected with a ring-shaped cover (38). The cover (38) is composed of two semi-ring-shaped half-covers (39). The top of the cover (39) is fixedly connected to the input pipe (40). The bottom of the two half-tanks (35) is fixedly connected to the inner controller (41). The inner controller (41) has a built-in control circuit, a battery and a radio transceiver module that are electrically connected to each other. The outer controller (11) also has a built-in radio transceiver module that is electrically connected to each other. The outer controller (11) and the inner controller (41) transmit radio signals through their respective radio transceiver modules. The bottom of the two half-tanks (35) is fixedly connected to the vertical support column (42). The two support columns (42) are fixedly connected to the vertical second electric push rod (43). The two second electric push rods (43) are set at equal angles to the inner cylinder (8) and their bottom ends are... A horizontal support frame (44) is fixed to each of the two support columns (42), and a vertical upper water spray pipe (45) is fixed to each of the two upper water spray pipes (45). The two upper water spray pipes (45) are respectively connected to a vertical lower water spray pipe (46) with a sealing sliding connection at the top and bottom, and are respectively connected to the inner cavity of the two half-water tanks (35). The bottom of the two lower water spray pipes (46) is inclined downwards towards the virtual axis of the inner cylinder (8), and is respectively threaded with a detachable nozzle (47). The two second electric push rods (43) are respectively electrically connected to the control circuit of the inner controller (41). The first half-cylinder (1) and the second half-cylinder (2) are respectively inserted with two sealing plates (48) at the top and bottom. Each sealing plate (48) can completely seal and block each discharge port (17).The first half-cylinder (1) and the second half-cylinder (2) are respectively fixedly connected to the discharge cylinders (49) with outputs, and the two discharge cylinders (49) are adjacent to the bottom of the collection tank (16).

5. A safety maintenance device for railway overpass approach bridge foundation piles according to claim 4, characterized in that: Waterproof electric heaters (50) are fixed to the bottom of the two semi-water tanks (35), and the two electric heaters (50) are electrically connected to the control circuits of the two internal controllers (41).

6. A safety maintenance device for railway overpass approach bridge foundation piles according to claim 4, characterized in that: The safety maintenance device also includes a suction mechanism, which includes a support cylinder (51), a No. 3 fastening bolt (52), a suction cylinder (53), a discharge cylinder (54), an auger (55), a lower gear (56), a guide rail (57), a sliding half-cylinder (58), a sliding cylinder (59), a No. 4 fastening bolt (60), a No. 4 fastening nut (61), a lower half-gear ring (62), an upper half-baffle (63), a lower gear ring (64), an upper baffle (65), a lower half-baffle (66), and a lower baffle (67). Vertical and penetrating support cylinders (51) are fixed to the upper parts of the two auger blades (14). The outer wall of the support cylinder (51) is also fixed to the rib plate (15). The support cylinder (51) is inserted through a... A horizontal No. 3 fastening bolt (52) is used to fasten vertical suction cylinders (53) through and through. The upper part of the suction cylinder (53) is fixedly connected to a horizontal discharge cylinder (54), and the top of the discharge cylinder (54) is closed. The suction cylinder (53) is not lower than the bottom of the auger blade (14). The outlet positions of the two discharge cylinders (54) are located directly above the collection tank (16). The two suction cylinders (53) are rotatably connected to vertical augers (55). The upper part of the shaft of the auger (55) is coaxially fixed with a lower gear (56). The two No. 3 fastening bolts (52) are respectively threaded through and connected to the two suction cylinders (53). The inner walls of the No. 1 half cylinder (1) and the No. 2 half cylinder (2) are respectively fixed with vertical guide rails (57). The rail (57) is slidably connected to the sliding half-cylinder (58) on the upper and lower sides respectively. When the first half-cylinder (1) and the second half-cylinder (2) are assembled into the outer cylinder (4), the two sliding half-cylinders (58) can be assembled into a complete sliding cylinder (59). When the two sliding half-cylinders (58) are assembled into a sliding half-cylinder (58), they are fastened by the fourth fastening bolt (60) and the fourth fastening nut (61). The bottom of the two sliding half-cylinders (58) is fixed with a horizontal lower half-tooth ring (62), and the upper part is fixed with a horizontal upper half-baffle (63). When the two sliding half-cylinders (58) are assembled into a sliding cylinder (59), the two lower half-tooth rings (62) can be assembled into a complete ring-shaped lower tooth ring (64). The two sliding half-cylinders (58) are slidably connected to the upper and lower sides respectively. 8) When assembled into a sliding cylinder (59), the two upper half baffles (63) can be assembled into a complete ring-shaped upper baffle (65). The lower gear ring (64) and the upper baffle (65) are respectively coaxially arranged with the inner cylinder (8). The lower gear ring (64) meshes with two lower gears (56). The upper baffle (65) is in contact with the outer circumferential wall of the water tank (36). The upper and lower ends of the two lower gear rings (62) are respectively fixed with horizontal lower half baffles (66). The lower half baffles (66) at the upper and lower ends of the two lower gear rings (62) can be assembled into two complete ring-shaped lower baffles (67). The two lower gears (56) can be interlocked in the gap between the two lower baffles (67) to maintain meshing with the lower gear ring (64).

7. A safety maintenance device for railway overpass approach bridge foundation piles according to any one of claims 1-6, characterized in that: The outer cylinder (4) has three horizontal lower support arms (68) fixed at equal angles around its bottom outer wall. Each lower support arm (68) is fixed with a vertical lower electric push rod (69). Each lower electric push rod (69) is fixed with a horizontal support plate (70). Each support plate (70) has a vertical ground plug (71) fixed at its bottom end. Each lower electric push rod (69) is detachably electrically connected to the external controller (11).

8. A safety maintenance device for railway overpass approach bridge foundation piles according to any one of claims 1-6, characterized in that: The external connector includes an external rod (72), an external protrusion (73), and an external insertion hole (74). The two external rods (72) are vertically inserted into the first half-cylinder (1) and the second half-cylinder (2) respectively. The top ends of the two external rods (72) are respectively fixed with external protrusions (73), and the two external protrusions (73) are respectively horizontally inserted into the external insertion hole (74). The internal connector includes an internal rod (75), an internal protrusion (76), and an internal insertion hole (77). The two internal rods (75) are vertically inserted into the third half-cylinder (5) and the fourth half-cylinder (6) respectively. The top ends of the two internal rods (75) are respectively fixed with internal protrusions (76), and the two internal protrusions (76) are respectively horizontally inserted into the internal insertion hole (77).

9. A safety maintenance device for railway overpass approach bridge foundation piles according to any one of claims 1-6, characterized in that: The bottom ends of the two extension seats (12) are respectively fixed with vertical insert plates (78), and the two insert plates (78) are respectively inserted into the two support seats (13) vertically.

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