Cast-in-place pile construction mechanism based on super-thick backfill soil layer

Abstract

The invention relates to the technical field of cast-in-place pile construction mechanisms, in particular to a cast-in-place pile construction mechanism based on an ultra-thick backfill soil stratum.The cast-in-place pile construction mechanism based on the ultra-thick backfill soil stratum.The cast-in-place pile construction mechanism comprises an outer sleeve, an inner sleeve, a connecting pipe and a corrugated hose, and the inner sleeve is arranged on the inner side of the outer sleeve. The concrete can be injected into the cast-in-place pile through the funnel-shaped inner side of the connecting pipe and the inner sleeve, at the moment, the corrugated hose is slightly pulled upwards, then the air cylinder can be started, an output shaft of the air cylinder can push the support, the support can drive the sliding sleeve to move downwards, and the concrete can be injected into the cast-in-place pile through the sliding sleeve. The sliding sleeve drives the tamping block fixedly connected with the bottom to tamp and extrude concrete injected into the cast-in-place pile, so that the concrete is filled in a non-natural flowing mode and is extruded and compacted by the tamping block, it is guaranteed that the concrete is injected into the cast-in-place pile and is compacted, and potential safety hazards caused by gaps reserved between the concrete are avoided.

Description

Technical Field

[0001] The invention relates to the technical field of bored pile construction mechanisms, in particular to a bored pile construction mechanism based on an ultra-thick backfill soil layer. Background Art

[0002] Bored piles are a common foundation treatment technology, widely used in construction, bridges and other projects. Bored piles are pile foundations formed by drilling holes in the foundation and pouring concrete. They are used to enhance the bearing capacity and stability of the foundation. The main steps are roughly as follows: first drill holes, then place steel cages, and finally pour concrete. Bored pile technology is indispensable in modern engineering. Through scientific management and technological innovation, it can effectively improve project quality and safety.

[0003] When the existing cast-in-place piles are subsequently injected with concrete, most of them place the conduit into the already placed steel cage, then place a funnel through the top of the conduit, and then inject the concrete mixed by the mixer truck into the conduit, and then inject it into the steel cage from the conduit. However, the concrete injected into the cast-in-place pile will fill the cast-in-place pile under its own natural flow. If the concrete is relatively viscous, not only will the flow and filling speed in the cast-in-place pile be slow, but gaps may also be generated, and the filling is not stable enough and there will be certain hidden dangers. In view of this, we propose a cast-in-place pile construction mechanism based on ultra-thick backfill soil layer. Summary of the invention

[0004] The purpose of the present invention is to provide a bored pile construction mechanism based on an ultra-thick backfill soil layer, which solves the problem that bored piles have low efficiency and certain hidden dangers when filling concrete.

[0005] To achieve the above object, the present invention provides the following technical solutions: A construction mechanism for cast-in-place piles based on ultra-thick backfill soil layers, comprising an outer sleeve, an inner sleeve, a connecting pipe and a corrugated hose, wherein the inner sleeve is arranged on the inner side of the outer sleeve, and the top of the outer sleeve is fixedly connected to the bottom surface of the connecting pipe; It also includes a control unit for compacting the concrete in the bored pile to ensure that the concrete is compacted to avoid leaving gaps in the bored pile; The linkage part is used to quantitatively inject concrete into the cast-in-place pile and cooperate with the control part to gradually compact the concrete; The connection part is used to dismantle and inspect the control part and linkage part to ensure the stability of concrete injection; The control part includes a fixing plate, a side of the fixing plate close to the outer sleeve is fixedly connected to the surface of the outer sleeve, the bottom surface of the fixing plate is fixedly connected to a cylinder, the output shaft of the cylinder is fixedly connected to a bracket, the end of the bracket away from the cylinder is fixedly connected to a sliding sleeve, the bottom of the inner sleeve passes through and is fixedly connected to a fixing column, an active cavity is opened on the inner side of the fixing column, an anti-slip plate passes through and is slidably connected to the inner side of the active cavity, the bottom surface of the anti-slip plate is fixedly connected to a connecting ring, and the bottom of the connecting ring is fixedly connected to a tamping block.

[0006] Preferably, a protective sleeve is fixedly connected to the top surface of the tamping block, the protective sleeve is penetrated by a fixed column and slidably connected, the inner sleeve is penetrated by a rotating column and rotatably connected, and an arc-shaped sliding groove is provided on the surface of the rotating column.

[0007] Preferably, a resistance block is fixedly connected to the inner side of the sliding sleeve, and the resistance block is inserted into an arc-shaped sliding groove provided on the surface of the rotating column. A rotating cover is passed through and fixedly connected to the top surface of the rotating column, and a trapezoidal block is fixedly connected to the inner side of the rotating cover.

[0008] Preferably, the linkage portion comprises a connecting disk, the bottom surface of which is fixedly connected to the top surface of the inner sleeve, the top surface of which is fixedly connected to a fixing disk, and the top surface of which is fixedly connected to the bottom surface of the connecting tube.

[0009] Preferably, a turntable is passed through and rotatably connected to the inner side of the connecting disk, a hexagonal groove is provided on the top surface of the turntable, and a toggle block is fixedly connected to the side surface of the turntable.

[0010] Preferably, a movable groove is opened on the side of the connecting disk, an arc-shaped guide rod is fixedly connected to the inner side of the movable groove, the arc-shaped guide rod passes through the toggle block, and an arc-shaped spring is fixedly connected between the toggle block and the inner side of the movable groove.

[0011] Preferably, a short slide groove is provided on the surface of the fixed plate, a slide rod 1 penetrates the inner side of the hexagonal groove, and a slide rod 2 penetrates the inner side of the short slide groove.

[0012] Preferably, the bottom end of the second slide bar penetrates and is rotatably connected with a sealing block, and the bottom end of the sealing block is penetrated and slidably connected by the top end of the first slide bar.

[0013] Preferably, the number of the sealing blocks is six groups, and the six groups of sealing blocks are respectively arranged in a circular array with the center line of the connecting disk as the axis.

[0014] Preferably, the connecting part includes an internal threaded sleeve, which is penetrated by a corrugated hose, a clamping ring is fixedly connected to the bottom surface of the corrugated hose, a sealing ring and an external threaded column are penetrated and fixedly connected to the top surface of the connecting pipe, and the external threaded column is penetrated by the internal threaded sleeve and threadedly connected.

[0015] By means of the above technical solution, the present invention provides a bored pile construction mechanism based on ultra-thick backfill soil layer. It has at least the following beneficial effects: (1) When the tamping block is placed at the bottom of the bored pile, the mixer truck can be turned on to inject concrete through the corrugated hose. The concrete will pass through the funnel-shaped part inside the connecting pipe and be injected into the bored pile through the inner sleeve. At this time, the corrugated hose is slightly pulled upward, and then the cylinder can be started. The output shaft of the cylinder will push the bracket, and the bracket will drive the sliding sleeve to move downward, so that the sliding sleeve drives the tamping block fixedly connected at the bottom to tamp and squeeze the concrete injected into the bored pile, so that the concrete is not naturally filled by flowing, but is squeezed and compacted by the tamping block, thereby ensuring that the concrete injected into the bored pile is compacted, and avoiding gaps between the concrete and the existence of safety hazards.

[0016] (2) According to the present invention, after the second slide bar slides a certain distance, it contacts the short slide groove, and the hexagonal groove continues to contact the first slide bar, so that the sealing block is forced to rotate to a certain extent with the second slide bar as the axis, so that the six groups of sealing blocks gradually close and seal the inner sleeve. After the cylinder drives the sliding sleeve to rise through the bracket, the compressed arc spring pushes the toggle block to reset, so that the sealing block opens again. Through repeated activation of the cylinder, firstly, the tamping block can repeatedly compact the injected concrete, and also the sealing block in the linkage part can be controlled to close and open repeatedly to achieve the effect of quantitative concrete injection, so that the concrete does not directly flow into the cast-in-place pile, but is injected partially, then compacted by the tamping block, and then injected and compacted again, thereby improving the compaction effect of the tamping block and improving the filling and sealing effect of the concrete in the cast-in-place pile; (3) The present invention can dismantle the control part and the linkage part for maintenance by rotating the internal threaded sleeve to dismantle the connecting pipe after each concrete injection into the bored pile, and by dismantling the bolts and flange between the connecting pipe and the outer sleeve. Since concrete is a relatively viscous substance, it is convenient to clean and maintain the control part and the linkage part, avoiding the occurrence of concrete blockage due to long-term use, thereby ensuring the stability of grouting in the bored pile. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the expanded structure of the connecting part in the present invention; Figure 3 It is a schematic diagram of the top view of the outer sleeve structure in the present invention; Figure 4 It is a schematic diagram of the cross-sectional structure of the fixed column in the present invention; Figure 5It is a schematic diagram of the cross-sectional structure of the rotating column in the present invention; Figure 6 It is a schematic diagram of the unfolded structure of the rotating column and the inner sleeve in the present invention; Figure 7 It is a schematic diagram of the linkage structure of the present invention; Figure 8 It is a schematic diagram of the unfolded structure of the linkage part in the present invention.

[0018] In the figure: 1, outer sleeve; 2, control part; 21, fixed plate; 22, cylinder; 23, bracket; 24, sliding sleeve; 25, fixed column; 26, anti-slip plate; 27, connecting ring; 28, tamping block; 29, protective cover; 210, rotating column; 211, arc-shaped slide groove; 212, resistance block; 213, rotating cover; 214, trapezoidal block; 215, movable cavity; 3, linkage part; 31, connecting plate ; 32. Turntable; 33. Hexagonal groove; 34. Toggle block; 35. Movable groove; 36. Arc guide rod; 37. Arc spring; 38. Fixed plate; 39. Short slide groove; 310. Slide rod one; 311. Sealing block; 312. Slide rod two; 4. Connecting part; 41. Internal threaded sleeve; 42. Snap ring; 43. External threaded column; 44. Sealing ring; 5. Connecting pipe; 7. Corrugated hose; 8. Inner sleeve. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] A construction mechanism for bored piles based on ultra-thick backfill soil layers, such as Figure 1-Figure 8As shown, it includes an outer sleeve 1, an inner sleeve 8, a connecting pipe 5 and a corrugated hose 7, wherein the inner sleeve 8 is arranged on the inner side of the outer sleeve 1, and the top of the outer sleeve 1 is fixedly connected to the bottom surface of the connecting pipe 5; it also includes a control part 2, which is used to compact the concrete in the cast-in-place pile to ensure that the concrete is compacted to avoid leaving gaps in the cast-in-place pile; a linkage part 3, which is used to quantitatively inject concrete into the cast-in-place pile and cooperate with the control part 2 to gradually compact the concrete; a connecting part 4, which is used to disassemble and inspect the control part 2 and the linkage part 3 to ensure the stability of concrete injection; the control part 2 includes a fixing plate 21, a side of the fixing plate 21 close to the outer sleeve 1 is fixedly connected to the surface of the outer sleeve 1, and the bottom surface of the fixing plate 21 is fixedly connected to a cylinder 2 2. The output shaft of the cylinder 22 is fixedly connected with a bracket 23, and one end of the bracket 23 away from the cylinder 22 is fixedly connected with a sliding sleeve 24. The bottom of the inner sleeve 8 passes through and is fixedly connected with a fixing column 25. The inner side of the fixing column 25 is provided with an active cavity 215. The inner side of the active cavity 215 passes through and is slidably connected with an anti-slip plate 26. The bottom surface of the anti-slip plate 26 is fixedly connected with a connecting ring 27, and the bottom of the connecting ring 27 is fixedly connected with a tamping block 28. When the cylinder 22 is started, the output shaft of the cylinder 22 will push the bracket 23, and the bracket 23 will drive the sliding sleeve 24 to move downward, so that the sliding sleeve 24 drives the tamping block 28 fixedly connected at the bottom to tamp and squeeze the concrete injected into the cast-in-place pile.

[0021] It is worth noting that a protective sleeve 29 is fixedly connected to the top surface of the tamping block 28, the protective sleeve 29 is penetrated by the fixed column 25 and is slidably connected, and the inner sleeve 8 is penetrated by and rotatably connected to the rotating column 210. When the cylinder 22 pushes the bracket 23 to move the sliding sleeve 24 downward, the resistance block 212 on the inner side of the sliding sleeve 24 will resist the inclined surface of the arc-shaped slide groove 211, and the rotating column 210 is forced to rotate under the resistance of the resistance block 212. An arc-shaped slide groove 211 is provided on the surface of the rotating column 210. The inner side of the sliding sleeve 24 is fixedly connected with a resistance block 212, and the resistance block 212 is inserted into the arc-shaped sliding groove 211 provided on the surface of the rotating column 210. The top surface of the rotating column 210 is penetrated and fixedly connected with a rotating cover 213, and the inner side of the rotating cover 213 is fixedly connected with a trapezoidal block 214. When the rotating column 210 rotates, it will drive the rotating cover 213 on the top of the rotating column 210 to rotate together, and further make the trapezoidal block 214 on the inner side of the rotating cover 213 gradually push the toggle block 34, so that the toggle block 34 slides along the arc-shaped guide rod 36, and the toggle block 34 will compress the arc spring 37.

[0022] The linkage part 3 includes a connecting plate 31 , the bottom surface of the connecting plate 31 is fixedly connected to the top surface of the inner sleeve 8 , the top surface of the connecting plate 31 is fixedly connected to a fixing plate 38 , and the top surface of the fixing plate 38 is fixedly connected to the bottom surface of the connecting pipe 5 .

[0023] In addition, a turntable 32 is penetrated and rotatably connected to the inner side of the connecting disk 31, a hexagonal groove 33 is provided on the top surface of the turntable 32, and a toggle block 34 is fixedly connected to the side of the turntable 32. When the rotating column 210 rotates, the rotating cover 213 on the top of the rotating column 210 will be driven to rotate together, and further the trapezoidal block 214 on the inner side of the rotating cover 213 will gradually push the toggle block 34, so that the toggle block 34 slides along the arc guide rod 36, and the toggle block 34 will compress the arc spring 37.

[0024] In addition, a movable groove 35 is provided on the side of the connecting plate 31, and an arc guide rod 36 is fixedly connected to the inner side of the movable groove 35, and the arc guide rod 36 passes through the toggle block 34. An arc spring 37 is fixedly connected between the toggle block 34 and the inner side of the movable groove 35. After the cylinder 22 drives the sliding sleeve 24 to rise through the bracket 23, the compressed arc spring 37 will push the toggle block 34 to reset, so that the sealing block 311 opens again. A short slide groove 39 is provided on the surface of the fixed plate 38, and a slide rod 1 310 passes through the inner side of the hexagonal groove 33, and a slide rod 2 312 passes through the inner side of the short slide groove 39. The bottom end of the second slide bar 312 passes through and is rotatably connected with a sealing block 311. When the toggle block 34 is resisted by the rotating trapezoidal block 214, the turntable 32 is driven to rotate in the connecting disk 31. When the turntable 32 rotates, the hexagonal groove 33 opened on its surface will resist the first slide bar 310, so that the first slide bar 310 slides in the hexagonal groove 33, and the first slide bar 310 will drive the sealing block 311 to move together. At the same time, when the sealing block 311 slides, it will drive the second slide bar 312 in the short slide groove 39 to slide. When the second slide bar 312 slides a certain distance, it will resist the short slide groove 39, and the hexagonal groove 33 will continue to resist the sliding of the first slide bar 310, so that the sealing block 311 is forced to rotate to a certain extent with the second slide bar 312 as the axis, so that the six groups of sealing blocks 311 gradually close and seal the inner sleeve 8. The bottom end of the sealing block 311 is penetrated and slidably connected by the top end of the first slide bar 310. The number of the sealing blocks 311 is six, and the six groups of sealing blocks 311 are arranged in a circular array with the center line of the connecting disk 31 as the axis.

[0025] The connecting part 4 includes an internal threaded sleeve 41, which is penetrated by the corrugated hose 7. The bottom surface of the corrugated hose 7 is fixedly connected with a clamping ring 42. The top surface of the connecting pipe 5 is penetrated and fixedly connected with a sealing ring 44 and an external threaded column 43. The external threaded column 43 is penetrated by the internal threaded sleeve 41 and threadedly connected.

[0026] When the bored pile construction mechanism based on the ultra-thick backfill soil layer of the present invention is in use, after the bored pile is drilled and the steel cage is installed, concrete needs to be injected into the steel cage. First, the corrugated hose 7 is connected to the discharge pipe of the concrete mixer truck, and then the clamping ring 42 at the bottom of the corrugated hose 7 is inserted above the connecting pipe 5, and is tightened with the external threaded column 43 through the internal threaded sleeve 41 to ensure that the corrugated hose 7 is connected to the outer sleeve 1 through the connecting pipe 5, so that subsequent concrete can be injected into the steel cage through the connecting pipe 5 and the inner sleeve 8 inside the outer sleeve 1. At this time, the six groups of sealing blocks 311 are in an open state, and then the outer sleeve 1 is gradually placed in the steel cage through the corrugated hose 7. When the ramming When the solid block 28 is placed at the bottom of the bored pile, the mixer truck can be turned on to inject concrete through the corrugated hose 7. The concrete will pass through the funnel-shaped structure on the inner side of the connecting pipe 5 and be injected into the bored pile through the inner sleeve 8. At this time, the corrugated hose 7 is slightly pulled upward, and then the cylinder 22 can be started. The output shaft of the cylinder 22 will push the bracket 23, and the bracket 23 will drive the sliding sleeve 24 to move downward, so that the sliding sleeve 24 drives the tamping block 28 fixedly connected at the bottom to tamp and squeeze the concrete injected into the bored pile, so that the concrete is not naturally filled by flowing, but is squeezed and compacted by the tamping block 28, so as to ensure that the concrete injected into the bored pile is compacted, and avoid gaps between the concrete and potential safety hazards.

[0027] At the same time, when the cylinder 22 pushes the bracket 23 to make the sliding sleeve 24 move downward, the abutment block 212 inside the sliding sleeve 24 abuts against the inclined surface of the arc-shaped slide groove 211, and the rotating column 210 is forced to rotate under the abutment of the abutment block 212. When the rotating column 210 rotates, the rotating cover 213 on the top of the rotating column 210 is driven to rotate together, and further the trapezoidal block 214 inside the rotating cover 213 gradually pushes the toggle block 34, so that the toggle block 34 moves along the arc-shaped guide groove 211. The rod 36 slides, and the toggle block 34 compresses the arc spring 37. When the toggle block 34 is resisted by the rotating trapezoidal block 214, the turntable 32 is driven to rotate in the connecting disk 31. When the turntable 32 rotates, the hexagonal groove 33 on the surface thereof resists the slide bar 1 310, so that the slide bar 1 310 slides in the hexagonal groove 33. The slide bar 1 310 drives the sealing block 311 to move together. At the same time, when the sealing block 311 slides, the slide bar 2 310 drives After the first cam 310 is in the state of being pressed down, the cam 311 of the second cam 312 is pressed down, and the cam 311 of the second cam 312 is pressed down, so that ...

[0028] After each concrete injection into the bored pile, the connecting pipe 5 is disassembled by rotating the internal threaded sleeve 41, and the control part 2 and the linkage part 3 can be disassembled and maintained separately by disassembling the bolts and flanges between the connecting pipe 5 and the outer sleeve 1. Since concrete is a relatively viscous substance, it is convenient to clean and maintain the control part 2 and the linkage part 3, avoiding the occurrence of concrete blockage due to long-term use, thereby ensuring the stability of grouting in the bored pile.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bored pile construction mechanism based on an ultra-thick backfill soil layer, comprising an outer casing (1), an inner casing (8), a connecting pipe (5) and a corrugated hose (7), characterized in that: The inner sleeve (8) is arranged on the inner side of the outer sleeve (1), and the top of the outer sleeve (1) is fixedly connected to the bottom surface of the connecting pipe (5); It also includes a control unit (2) for compacting the concrete in the bored pile to ensure that the concrete is compacted and avoid leaving gaps in the bored pile; The linkage part (3) is used to quantitatively inject concrete into the cast-in-place pile and cooperate with the control part (2) to gradually compact the concrete; The connecting part (4) is used to disassemble and inspect the control part (2) and the linkage part (3) to ensure the stability of concrete injection; The control part (2) comprises a fixing plate (21), a side of the fixing plate (21) close to the outer sleeve (1) is fixedly connected to the surface of the outer sleeve (1), a bottom surface of the fixing plate (21) is fixedly connected to a cylinder (22), an output shaft of the cylinder (22) is fixedly connected to a bracket (23), an end of the bracket (23) away from the cylinder (22) is fixedly connected to a sliding sleeve (24), a fixing column (25) is passed through and fixedly connected to the bottom of the inner sleeve (8), a movable cavity (215) is provided on the inner side of the fixing column (25), an anti-slip plate (26) is passed through and slidably connected to the inner side of the movable cavity (215), a connecting ring (27) is fixedly connected to the bottom surface of the anti-slip plate (26), and a tamping block (28) is fixedly connected to the bottom of the connecting ring (27).

2. The bored pile construction mechanism based on super-thick backfill soil layer according to claim 1 is characterized by: A protective sleeve (29) is fixedly connected to the top surface of the tamping block (28), the protective sleeve (29) is penetrated by the fixed column (25) and is slidably connected thereto, the inner sleeve (8) is penetrated by and rotatably connected to a rotating column (210), and an arc-shaped sliding groove (211) is provided on the surface of the rotating column (210).

3. The bored pile construction mechanism based on super-thick backfill soil layer according to claim 2 is characterized by: The inner side of the sliding sleeve (24) is fixedly connected to a resistance block (212), and the resistance block (212) is inserted into an arc-shaped sliding groove (211) provided on the surface of the rotating column (210). The top surface of the rotating column (210) is penetrated by and fixedly connected to a rotating cover (213), and the inner side of the rotating cover (213) is fixedly connected to a trapezoidal block (214).

4. The bored pile construction mechanism based on super-thick backfill soil layer according to claim 1 is characterized in that: The linkage portion (3) comprises a connecting disk (31), the bottom surface of the connecting disk (31) being fixedly connected to the top surface of the inner sleeve (8), the top surface of the connecting disk (31) being fixedly connected to a fixing disk (38), and the top surface of the fixing disk (38) being fixedly connected to the bottom surface of the connecting tube (5).

5. The bored pile construction mechanism based on super-thick backfill soil layer according to claim 4 is characterized in that: A rotating disk (32) penetrates the inner side of the connecting disk (31) and is rotatably connected thereto. A hexagonal groove (33) is provided on the top surface of the rotating disk (32). A toggle block (34) is fixedly connected to the side surface of the rotating disk (32).

6. The bored pile construction mechanism based on super-thick backfill soil layer according to claim 5 is characterized by: A movable groove (35) is formed on the side of the connecting plate (31), an arc-shaped guide rod (36) is fixedly connected to the inner side of the movable groove (35), the arc-shaped guide rod (36) passes through the toggle block (34), and an arc-shaped spring (37) is fixedly connected between the toggle block (34) and the inner side of the movable groove (35).

7. The bored pile construction mechanism based on super-thick backfill soil layer according to claim 4 is characterized by: A short slide groove (39) is provided on the surface of the fixed plate (38), a first slide rod (310) passes through the inner side of the hexagonal groove (33), and a second slide rod (312) passes through the inner side of the short slide groove (39).

8. The bored pile construction mechanism based on super-thick backfill soil layer according to claim 7 is characterized by: The bottom end of the second sliding rod (312) penetrates and is rotatably connected to a sealing block (311), and the bottom end of the sealing block (311) is penetrated and slidably connected to the top end of the first sliding rod (310).

9. The bored pile construction mechanism based on super-thick backfill soil layer according to claim 8, characterized in that: The number of the sealing blocks (311) is six groups, and the six groups of sealing blocks (311) are arranged in a circular array with the center line of the connecting disk (31) as the axis.

10. The bored pile construction mechanism based on super-thick backfill soil layer according to claim 1, characterized in that: The connecting portion (4) comprises an internal threaded sleeve (41), the internal threaded sleeve (41) being penetrated by a corrugated hose (7), a clamping ring (42) being fixedly connected to the bottom surface of the corrugated hose (7), a sealing ring (44) and an external threaded column (43) being penetrated and fixedly connected to the top surface of the connecting pipe (5), the external threaded column (43) being penetrated by the internal threaded sleeve (41) and being threadedly connected.

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