Complex geological foundation open caisson structure and construction method thereof

Abstract

The invention discloses a complex geological foundation open caisson structure and a construction method thereof, and relates to the technical field of open caisson construction.The open caisson structure comprises an open caisson device, a lifting device and a slurry pump, and the open caisson device is an auxiliary construction device; the soil pressing structure and the soil cutting structure of the open caisson device can treat the land around the inner wall of the open caisson wall during construction, during construction, the lifting device places the open caisson device into the poured open caisson wall, the open caisson device can flatten the land around the blade foot of the open caisson wall, and the open caisson wall can be well poured into the open caisson wall. Loads borne by all parts of the blade foot are the same, deviation of the open caisson wall during descending is avoided, the land around the blade foot can be evenly excavated, underground muddy water can be pumped out through the mud pump, underground construction is prevented from being affected, and after the open caisson wall descends to the preset elevation, the lifting device takes the open caisson structure out of the open caisson wall, and the open caisson wall is lifted to the preset elevation. And then the open caisson wall is subjected to bottom sealing.

Description

Technical Field

[0001] The invention relates to the technical field of caisson construction, in particular to a caisson structure with a complex geological foundation and a construction method thereof. Background Art

[0002] Caisson structure is a structural form used for building foundations underwater or in areas with high water levels. It is usually used in the foundation construction of projects such as ports, docks, bridges, and power pipeline corridors. The caisson is a large box structure made of reinforced concrete. It gradually sinks into the soil or the bottom of the water through its own weight and external pressure until it reaches the required design depth. Then concrete or other reinforcement treatments are poured inside to eventually form a stable foundation. When the existing caisson wall sinks, the land around the blade foot is uneven, resulting in inconsistent loads from the surrounding soil on the blade foot, which can easily cause the caisson wall to shift, affecting the stability and safety of the overall structure, and may even cause surrounding ground settlement. When excavating the land around the blade foot of the caisson wall, under complex geological conditions, the high-voltage lines on the upper part of the surrounding environment are relatively close, affecting the on-site construction efficiency. The hardness of the surrounding land is inconsistent, making it difficult to excavate evenly with an excavator, and the force on the caisson wall cannot be guaranteed to be uniform. At the same time, for some difficult-to-excavate land, the efficiency of the caisson wall sinking will be affected, reducing the construction efficiency. Summary of the invention

[0003] The purpose of the present invention is to provide a caisson structure with a complex geological foundation and a construction method thereof, so as to solve the problems raised in the prior art.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a caisson structure with a complex geological foundation, the caisson structure comprising a caisson device, a lifting device and a mud pump, the caisson device comprising an outer shell, a top plate is installed at one end of the outer shell, a groove is arranged on the top plate, one end of the lifting device is installed on one side of the top plate, a driving structure is rotatably connected in the groove of the top plate, the driving structure is connected to the mud pump through a pipeline, the interior of the outer shell is installed with a transmission structure, an upper conversion structure, a lower conversion structure and a sealing plate from top to bottom, the sealing plate rotates at one end of the outer shell, a through groove is arranged on the sealing plate, the transmission structure is installed below the top plate, a soil compacting structure is installed at one end of the upper conversion structure, a soil digging structure is installed at one end of the lower conversion structure, and the lifting device and the mud pump are connected to a control system.

[0005] The driving structure includes a motor, which is installed above the top plate, a worm is installed on the output shaft of the motor, a driving shaft is rotatably installed in the groove of the top plate, the driving shaft is connected to the mud pump through a pipeline, a worm wheel is installed at one end of the driving shaft, the worm wheel is meshed with the worm, an external thread is provided on the outer surface of the driving shaft, and the motor is connected to the control system. The manual control system controls the motor to start, the output shaft of the motor drives the worm to rotate, the worm drives the worm wheel to rotate, and the worm wheel drives the driving shaft to rotate.

[0006] The transmission structure includes a support ring, which is installed inside the shell. The support ring is provided with a rotating groove, in which a ratchet is rotatably connected, and a first pawl and a second pawl are rotatably connected to the groove wall of the rotating groove. A first electric spring is installed on one side of the first pawl, and one end of the first electric spring is installed on the groove wall of the rotating groove. A second electric spring is installed on one side of the second pawl, and one end of the second electric spring is installed on the groove wall of the rotating groove. A sliding groove is provided on the ratchet, and an upper conversion structure is slidably connected in the sliding groove. The first electric spring and the second electric spring are connected to the control system.

[0007] The upper conversion structure includes a first large gear and a sleeve, one end of the sleeve is connected to a square cylinder, the square cylinder slides in a sliding groove, an internal thread is provided inside the sleeve, the drive shaft is installed in the sleeve, the external thread is adapted to the internal thread, the outer surface of the sleeve is sequentially installed with a first external gear, a second external gear, a first limit block and a support plate from top to bottom, the support plate rotates on the outer surface of the sleeve, the first large gear is rotationally connected to one side of the lower conversion structure, an internal gear is installed on the inner wall of the first large gear, the internal gear is meshed with the first external gear and the second external gear, a first external gear ring is installed inside the outer shell, a soil pressing structure is installed at one end of the support plate, a first planetary gear is installed at one end of the soil pressing structure, the first external gear ring is meshed with the first planetary gear, and the first planetary gear is meshed with the first large gear.

[0008] The lower conversion structure includes an outer cylinder, which rotates in the through groove, and a second large gear is installed at one end of the outer cylinder, and the first large gear rotates on one side of the second large gear. A mounting groove is provided on the outer surface of the outer cylinder, and the mounting groove is adapted to the first limit block. A second outer gear ring is installed on the inner wall of the outer shell, and a support block is installed on one side of the support plate. The soil pressing structure rotates at one end of the support block, and the other end of the support block is slidably connected to the digging structure. A connecting pipe is connected to one side of the support block, and one end of the connecting pipe is rotatably connected to the second planetary gear. A limiting groove is provided on the second planetary gear, and the second planetary gear is meshed with the second outer gear ring, and the second outer gear ring is meshed with the second large gear.

[0009] The soil pressing structure includes a first rotating shaft, which rotates at one end of a supporting plate, and a sealing shell is rotatably connected to the outer surface of the first rotating shaft, a first bevel gear is installed on the outer surface of the first rotating shaft, and a column is rotatably connected to the inner wall of the sealing shell, a second bevel gear and a first connecting rod are installed on the column, the first bevel gear and the second bevel gear are meshed, one end of the first connecting rod is rotatably connected to the second connecting rod, one end of the second connecting rod is rotatably connected to a sliding column, the sliding column slides on the first rotating shaft, and one end of the sliding column is connected to the soil pressing plate.

[0010] The digging structure includes a second rotating shaft and a rotating disk. The rotating disk rotates on one side of the support ring, and the second rotating shaft rotates on one side of the rotating disk. The outer surface of the second rotating shaft is connected with a second limit block, and the second limit block is adapted to the limit groove. An excavator is installed at one end of the second rotating shaft, and the outer surface of the excavator is installed with a mud removal knife, a soil drilling knife and a soil breaking knife in sequence from top to bottom.

[0011] A construction method of a caisson structure with a complex geological foundation, using a caisson structure with a complex geological foundation, the method comprising the following steps:

[0012] S1. Casting caisson wall;

[0013] S2, placing the caisson device;

[0014] S3, compacting the land;

[0015] S4, digging the land;

[0016] S5. Take out the caisson device;

[0017] S6, back cover.

[0018] The S1 comprises the following steps:

[0019] S101, manually pouring the caisson wall, making the blade foot, and digging the middle land of the prefabricated caisson position by an excavator;

[0020] The S2 comprises the following steps:

[0021] S201, controlling the lifting device to place the caisson structure into the caisson wall;

[0022] S202, controlling the mud pump to start, and pumping underground mud and water out of the driving shaft;

[0023] The S3 comprises the following steps:

[0024] S301, control the motor to start, control the second energized spring to energize and contract, the second energized spring drives the second pawl to rotate into the rotating groove, the output shaft of the motor drives the worm to rotate forward, the worm drives the worm wheel to rotate forward, the worm wheel drives the drive shaft to rotate forward, the drive shaft drives the sleeve to rotate forward, the sleeve drives the square tube to rotate forward, and because the first pawl abuts against the ratchet wheel, the square tube slides in the sliding groove in a direction away from the motor;

[0025] S302, the sleeve drives the support plate to slide, the support plate drives the first rotating shaft and the support block to slide, the first rotating shaft drives the first planetary gear to slide to a position meshing with the first large gear and the first outer gear ring, the support block drives the connecting pipe to slide, the connecting pipe drives the second planetary gear to slide, the second planetary gear is disengaged from the second outer gear ring and the second large gear, and the soil compacting structure slides to the bottom of the soil excavating structure;

[0026] S303, control the motor to reverse, the output shaft of the motor drives the worm to reverse, the worm drives the worm wheel to reverse, the worm wheel drives the drive shaft to reverse, the drive shaft drives the sleeve to reverse, the sleeve drives the square tube to reverse, and because the ratchet slides on the first pawl, the square tube drives the ratchet to rotate;

[0027] S304, the sleeve drives the first outer gear to rotate, the first outer gear drives the inner gear to rotate, the inner gear drives the first large gear to rotate, the first large gear drives the first planetary gear to rotate, the first planetary gear rotates while revolving around the first large gear, the first planetary gear drives the first rotating shaft to rotate while revolving around the first large gear, the first rotating shaft drives the sealing plate to rotate, the support plate drives the support block to revolve around the first large gear, and the support block drives the second rotating shaft to revolve around the first large gear;

[0028] S305, the first rotating shaft drives the first bevel gear to rotate, the first bevel gear drives the second bevel gear to rotate, the second bevel gear drives the column to rotate, the column drives the first connecting rod to rotate, the first connecting rod drives the second connecting rod to rotate, the second connecting rod drives the sliding column to slide back and forth on the first rotating shaft, and the sliding column drives the soil pressing plate to move up and down to compact the soil around the blade foot;

[0029] The S4 comprises the following steps:

[0030] S401, control the first energized spring to be energized and contracted, control the second energized spring to be de-energized and extend, the first energized spring drives the first pawl to rotate into the rotating groove, the second energized spring drives the second pawl to rotate to the initial position, control the motor to reverse, the output shaft of the motor drives the worm to reverse, the worm drives the worm wheel to reverse, the worm wheel drives the driving shaft to reverse, the driving shaft drives the sleeve to reverse, the sleeve drives the square tube to reverse, because the second pawl presses against the ratchet wheel, the square tube slides in the sliding groove toward the direction close to the motor;

[0031] S402, the first limit block slides into the installation groove, the sleeve drives the support plate to slide, the support plate drives the first rotating shaft to slide, the first rotating shaft drives the first planetary gear to slide, the first planetary gear is disengaged from the first outer gear ring and the first large gear, the first outer gear is disengaged from the inner gear, the second outer gear is meshed with the inner gear, the support plate drives the support block to slide, the support block drives the connecting pipe to slide, the connecting pipe drives the second planetary gear to slide, the second planetary gear is meshed with the second outer gear ring and the second large gear, the second limit block slides into the limit groove, and the soil compacting structure slides to the top of the soil excavation structure;

[0032] S403, control the motor to rotate forward, the output shaft of the motor drives the worm to rotate forward, the worm drives the worm wheel to rotate forward, the worm wheel drives the drive shaft to rotate forward, the drive shaft drives the sleeve to rotate forward, the sleeve drives the square tube to rotate forward, and because the ratchet slides on the first pawl, the square tube drives the ratchet to rotate;

[0033] S403, the sleeve drives the first limit block and the second outer gear to rotate, the second outer gear drives the inner gear to rotate, the inner gear drives the first large gear to rotate, so as to prevent the inner gear and the first outer gear from being unable to mesh, the first limit block drives the outer cylinder to rotate, the outer cylinder drives the second large gear to rotate, the second large gear drives the second planetary gear to rotate around the second large gear while rotating, the second planetary gear drives the second limit block to rotate, the second limit block drives the second rotating shaft to rotate around the second large gear while rotating;

[0034] S405, the second rotating shaft drives the excavator to rotate, and the excavator drives the mud-discharging knife, the soil-drilling knife and the soil-breaking knife to rotate, the soil-breaking knife initially breaks the hard soil, the soil-drilling knife drills into the soil to further cut and dig the soil layer, the mud-discharging knife quickly discharges the excavated mud to the ground, and the excavated mud is removed by the mud pump;

[0035] The S5 comprises the following steps:

[0036] S501, when the caisson wall drops to a predetermined elevation, the motor is controlled to stop working, and the lifting device is controlled to drive the top plate to rise, and the caisson structure is taken out;

[0037] The S6 comprises the following steps:

[0038] S601. Seal the bottom of the caisson wall.

[0039] Compared with the prior art, the present invention has the following beneficial effects:

[0040] 1. With the cooperation of the driving structure and the transmission structure of the present invention, it is possible to use one motor to simultaneously meet the lifting and rotating functions of the earth-pressing structure and the earth-digging structure. The power can be switched and distributed between different devices. Multiple complex operations can be completed without adding additional motors, which reduces the manufacturing and maintenance costs and improves the reliability and operating efficiency of the equipment.

[0041] 2. The soil pressing structure of the present invention can press the soil around the blade foot while rotating, which can not only compact the soil around the blade foot, but also effectively improve the uniformity of the foundation, compact the soil layer by layer, and ensure that the load distribution on the blade foot is more uniform, thereby effectively reducing the inclination or instability of the blade foot caused by local uneven force, reducing the risk of the caisson wall shifting, and avoiding the potential impact of uneven settlement on the construction quality and ground structure;

[0042] 3. The excavation structure of the present invention has the function of rotary excavation. The rotation action makes the ground around the blade foot more evenly stressed, thereby avoiding over-excavation or under-excavation of local soil and ensuring the accuracy and stability of construction. The excavation structure has three cutting tools: a soil-breaking knife, a soil-drilling knife and a mud-discharging knife. The soil-breaking knife is responsible for the preliminary crushing of hard or dense soil, the soil-drilling knife further cuts and excavates the soil layer, and the mud-discharging knife quickly discharges the excavated mud, which not only greatly improves the work efficiency, but also enables it to cope with a variety of complex geological conditions, reduces the foundation disturbance problem that may be caused by traditional excavation methods, and improves the project quality and construction safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 A schematic diagram of the construction state of the caisson structure of the present invention;

[0044] Figure 2 It is a three-dimensional diagram of the caisson structure of the present invention;

[0045] Figure 3 It is an internal schematic diagram of the caisson structure of the present invention;

[0046] Figure 4 is a three-dimensional diagram of the driving structure of the present invention;

[0047] Figure 5 is a three-dimensional diagram of the transmission structure of the present invention;

[0048] Figure 6 The three-dimensional structure of the up-conversion structure and the down-conversion structure of the present invention Figure 1 ;

[0049] Figure 7 The three-dimensional structure of the up-conversion structure and the down-conversion structure of the present invention Figure 2 ;

[0050] Figure 8 is a three-dimensional diagram of a second planetary gear of the present invention;

[0051] Fig. 9 is an internal schematic diagram of the compacted earth structure of the present invention;

[0052] Fig.10 It is a three-dimensional diagram of the earth-digging structure of the present invention.

[0053] In the figure: 1. housing; 2. driving structure; 21. motor; 22. worm; 23. worm wheel; 24. driving shaft; 25. external thread; 3. top plate; 4. transmission structure; 41. support ring; 42. ratchet; 43. first ratchet; 44. second ratchet; 5. upper conversion structure; 51. first large gear; 52. first outer gear ring; 53. support plate; 54. first planetary gear; 55. square cylinder; 56. sleeve; 57. first limit block; 58. first outer gear; 59. second outer gear; 6. lower conversion structure; 61. second large gear; 62. Second outer gear ring; 63. Outer cylinder; 64. Support block; 65. Connecting pipe; 66. Second planetary gear; 67. Limiting groove; 7. Earth pressing structure; 71. First rotating shaft; 72. Sealing shell; 73. First bevel gear; 74. Second bevel gear; 75. First connecting rod; 76. Second connecting rod; 77. Sliding column; 78. Earth pressing plate; 8. Earth digging structure; 81. Second rotating shaft; 82. Excavator; 83. Mud removal knife; 84. Drilling knife; 85. Earth breaking knife; 86. Second limiting block; 9. Sealing plate; 10. Caisson wall; 11. Lifting device. DETAILED DESCRIPTION

[0054] 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.

[0055] Example: Figure 1-Figure 10As shown, the present invention provides a technical solution, the caisson structure includes a caisson device, a lifting device 11 and a mud pump, the caisson device includes an outer shell 1, a top plate 3 is installed at one end of the outer shell 1, a groove is arranged on the top plate 3, one end of the lifting device 11 is installed on one side of the top plate 3, a driving structure 2 is rotatably connected in the groove of the top plate 3, the driving structure 2 is connected to the mud pump through a pipeline, the inner part of the outer shell 1 is installed with a transmission structure 4, an upper conversion structure 5, a lower conversion structure 6 and a sealing plate 9 from top to bottom, the sealing plate 9 rotates at one end of the outer shell 1, a through groove is arranged on the sealing plate 9, the transmission structure 4 is installed below the top plate 3, a soil compacting structure 7 is installed at one end of the upper conversion structure 5, a soil digging structure 8 is installed at one end of the lower conversion structure 6, the lifting device 11 and the mud pump are connected to the control system.

[0056] The driving structure 2 includes a motor 21, which is installed above the top plate 3. A worm 22 is installed on the output shaft of the motor 21. A driving shaft 24 is rotatably installed in the groove of the top plate 3. The driving shaft 24 is connected to the mud pump through a pipeline. A worm gear 23 is installed at one end of the driving shaft 24. The worm gear 23 is meshed with the worm 22. An external thread 25 is provided on the outer surface of the driving shaft 24. The motor 21 is connected to the control system.

[0057] The transmission structure 4 includes a support ring 41, which is installed inside the shell 1. A rotating groove is provided on the support ring 41, in which a ratchet 42 is rotatably connected, and a first pawl 43 and a second pawl 44 are rotatably connected to the groove wall of the rotating groove. A first electric spring is installed on one side of the first pawl 43, and one end of the first electric spring is installed on the groove wall of the rotating groove. A second electric spring is installed on one side of the second pawl 44, and one end of the second electric spring is installed on the groove wall of the rotating groove. A sliding groove is provided on the ratchet 42, in which an upper conversion structure 5 is slidably connected, and the first electric spring and the second electric spring are connected to the control system.

[0058] The upper conversion structure 5 includes a first large gear 51 and a sleeve 56. One end of the sleeve 56 is connected to a square cylinder 55, which slides in the sliding groove. An internal thread is provided inside the sleeve 56. The drive shaft 24 is installed in the sleeve 56. The external thread 25 is adapted to the internal thread. The outer surface of the sleeve 56 is sequentially installed with a first external gear 58, a second external gear 59, a first limit block 57 and a support plate 53 from top to bottom. The support plate 53 rotates on the outer surface of the sleeve 56. The first large gear 51 is rotatably connected to one side of the lower conversion structure 6. An internal gear is installed on the inner wall of the first large gear 51, and the internal gear is meshed with the first external gear 58 and the second external gear 59. A first external gear ring 52 is installed inside the housing 1. A soil pressing structure 7 is installed at one end of the support plate 53. A first planetary gear 54 is installed at one end of the soil pressing structure 7. The first external gear ring 52 is meshed with the first planetary gear 54, and the first planetary gear 54 is meshed with the first large gear 51.

[0059] The lower conversion structure 6 includes an outer cylinder 63, which rotates in the through groove. A second large gear 61 is installed at one end of the outer cylinder 63, and the first large gear 51 rotates on one side of the second large gear 61. A mounting groove is provided on the outer surface of the outer cylinder 63, and the mounting groove is adapted to the first limit block 57. A second outer gear ring 62 is installed on the inner wall of the outer shell 1, and a support block 64 is installed on one side of the support plate 53. The soil pressing structure 7 rotates at one end of the support block 64, and the other end of the support block 64 is slidably connected to the digging structure 8. A connecting pipe 65 is connected to one side of the support block 64, and one end of the connecting pipe 65 is rotatably connected to the second planetary gear 66. A limiting groove 67 is provided on the second planetary gear 66. The second planetary gear 66 is meshed with the second outer gear ring 62, and the second outer gear ring 62 is meshed with the second large gear 61.

[0060] The soil pressing structure 7 includes a first rotating shaft 71, which rotates at one end of the support plate 53. The outer surface of the first rotating shaft 71 is rotatably connected to a sealing shell 72. A first bevel gear 73 is installed on the outer surface of the first rotating shaft 71. A column is rotatably connected to the inner wall of the sealing shell 72. A second bevel gear 74 and a first connecting rod 75 are installed on the column. The first bevel gear 73 and the second bevel gear 74 are meshed. One end of the first connecting rod 75 is rotatably connected to the second connecting rod 76. One end of the second connecting rod 76 is rotatably connected to a sliding column 77. The sliding column 77 slides on the first rotating shaft 71, and one end of the sliding column 77 is connected to a soil pressing plate 78.

[0061] The excavation structure 8 includes a second rotating shaft 81 and a rotating disk. The rotating disk rotates on one side of the support ring 41, and the second rotating shaft 81 rotates on one side of the rotating disk. The outer surface of the second rotating shaft 81 is connected to a second limit block 86, and the second limit block 86 is adapted to the limit groove 67. An excavator 82 is installed at one end of the second rotating shaft 81, and the outer surface of the excavator 82 is installed with a mud removal knife 83, a soil drilling knife 84 and a soil breaking knife 85 from top to bottom.

[0062] A construction method of a caisson structure with a complex geological foundation, using a caisson structure with a complex geological foundation, the method comprising the following steps:

[0063] S1. Casting caisson wall;

[0064] S2, placing the caisson device;

[0065] S3, compacting the land;

[0066] S4, digging the land;

[0067] S5. Take out the caisson device;

[0068] S6, back cover.

[0069] The S1 comprises the following steps:

[0070] S101, manually pouring the caisson wall 10, making the blade foot, and digging the middle land of the prefabricated caisson position by an excavator;

[0071] The S2 comprises the following steps:

[0072] S201, controlling the lifting device 11 to place the caisson structure into the caisson wall 10;

[0073] S202, controlling the mud pump to start, and pumping underground muddy water out of the drive shaft 24;

[0074] The S3 comprises the following steps:

[0075] S301, control the motor 21 to start, control the second energized spring to energize and contract, the second energized spring drives the second pawl 44 to rotate into the rotating groove, the output shaft of the motor 21 drives the worm 22 to rotate forward, the worm 22 drives the worm wheel 23 to rotate forward, the worm wheel 23 drives the drive shaft 24 to rotate forward, the drive shaft 24 drives the sleeve 56 to rotate forward, the sleeve 56 drives the square tube 55 to rotate forward, because the first pawl 43 abuts against the ratchet wheel 42, the square tube 55 slides in the sliding groove in the direction away from the motor 21;

[0076] S302, the sleeve 56 drives the support plate 53 to slide, the support plate 53 drives the first rotating shaft 71 and the support block 64 to slide, the first rotating shaft 71 drives the first planetary gear 54 to slide to a position meshing with the first large gear 51 and the first outer gear ring 52, the support block 64 drives the connecting pipe 65 to slide, the connecting pipe 65 drives the second planetary gear 66 to slide, the second planetary gear 66 is disengaged from the second outer gear ring 62 and the second large gear 61, and the compacting structure 7 slides to the bottom of the digging structure 8;

[0077] S303, control the motor 21 to reverse, the output shaft of the motor 21 drives the worm 22 to reverse, the worm 22 drives the worm wheel 23 to reverse, the worm wheel 23 drives the drive shaft 24 to reverse, the drive shaft 24 drives the sleeve 56 to reverse, the sleeve 56 drives the square tube 55 to reverse, and because the ratchet 42 slides on the first pawl 43, the square tube 55 drives the ratchet 42 to rotate;

[0078] S304, the sleeve 56 drives the first outer gear 58 to rotate, the first outer gear 58 drives the inner gear to rotate, the inner gear drives the first large gear 51 to rotate, the first large gear 51 drives the first planetary gear 54 to rotate, the first planetary gear 54 rotates while revolving around the first large gear 51, the first planetary gear 54 drives the first rotating shaft 71 to rotate while revolving around the first large gear 51, the first rotating shaft 71 drives the sealing plate 9 to rotate, the support plate 53 drives the support block 64 to revolve around the first large gear 51, and the support block 64 drives the second rotating shaft 81 to revolve around the first large gear 51;

[0079] S305, the first rotating shaft 71 drives the first bevel gear 73 to rotate, the first bevel gear 73 drives the second bevel gear 74 to rotate, the second bevel gear 74 drives the column to rotate, the column drives the first connecting rod 75 to rotate, the first connecting rod 75 drives the second connecting rod 76 to rotate, the second connecting rod 76 drives the sliding column 77 to slide back and forth on the first rotating shaft 71, the sliding column 77 drives the soil pressing plate 78 to move up and down to compact the soil around the blade foot;

[0080] The S4 comprises the following steps:

[0081] S401, control the first energized spring to be energized and contracted, control the second energized spring to be de-energized and stretch, the first energized spring drives the first pawl 43 to rotate into the rotating groove, the second energized spring drives the second pawl 44 to rotate to the initial position, control the motor 21 to reverse, the output shaft of the motor 21 drives the worm 22 to reverse, the worm 22 drives the worm wheel 23 to reverse, the worm wheel 23 drives the drive shaft 24 to reverse, the drive shaft 24 drives the sleeve 56 to reverse, the sleeve 56 drives the square tube 55 to reverse, because the second pawl 44 is against the ratchet wheel 42, the square tube 55 slides in the sliding groove toward the direction close to the motor 21;

[0082] S402, the first limiting block 57 slides into the installation groove, the sleeve 56 drives the support plate 53 to slide, the support plate 53 drives the first rotating shaft 71 to slide, the first rotating shaft 71 drives the first planetary gear 54 to slide, the first planetary gear 54 is disengaged from the first outer gear ring 52 and the first large gear 51, the first outer gear 58 is disengaged from the inner gear, the second outer gear 59 is engaged with the inner gear, the support plate 53 drives the support block 64 to slide, the support block 64 drives the connecting pipe 65 to slide, the connecting pipe 65 drives the second planetary gear 66 to slide, the second planetary gear 66 is engaged with the second outer gear ring 62 and the second large gear 61, the second limiting block 86 slides into the limiting groove 67, and the compacting structure 7 slides to the top of the excavating structure 8;

[0083] S403, control the motor 21 to rotate forward, the output shaft of the motor 21 drives the worm 22 to rotate forward, the worm 22 drives the worm wheel 23 to rotate forward, the worm wheel 23 drives the drive shaft 24 to rotate forward, the drive shaft 24 drives the sleeve 56 to rotate forward, the sleeve 56 drives the square tube 55 to rotate forward, and because the ratchet 42 slides on the first pawl 43, the square tube 55 drives the ratchet 42 to rotate;

[0084] S404, the sleeve 56 drives the first limit block 57 and the second outer gear 59 to rotate, the second outer gear 59 drives the inner gear to rotate, the inner gear drives the first large gear 51 to rotate, the first limit block 57 drives the outer cylinder 63 to rotate, the outer cylinder 63 drives the second large gear 61 to rotate, the second large gear 61 drives the second planetary gear 66 to rotate around the second large gear 61 while rotating, the second planetary gear 66 drives the second limit block 86 to rotate, the second limit block 86 drives the second rotating shaft 81 to rotate around the second large gear 61 while rotating;

[0085] S405, the second rotating shaft 81 drives the excavator 82 to rotate, and the excavator 82 drives the mud-discharging knife 83, the soil-drilling knife 84 and the soil-breaking knife 85 to rotate, the soil-breaking knife 85 initially crushes the hard soil, the soil-drilling knife 84 drills into the soil to further cut and dig the soil layer, the mud-discharging knife 83 discharges the excavated soil to the ground, and the excavated mud is removed by the mud pump;

[0086] The S5 comprises the following steps:

[0087] S501, when the caisson wall 10 drops to a predetermined elevation, the motor 21 is controlled to stop working, and the lifting device 11 is controlled to drive the top plate 3 to rise, and the caisson structure is taken out;

[0088] The S6 comprises the following steps:

[0089] S601, sealing the bottom of the caisson wall 10.

[0090] Working principle of the present invention:

[0091] During operation, the caisson wall 10 is cast manually, and then the middle land of the prefabricated caisson position is dug up by an excavator. The manual control system controls the lifting device 11 to place the caisson structure into the caisson wall 10, and the lifting device 11 drives the top plate 3 to descend to a predetermined position, and the control motor 21 is started, and the second energized spring is controlled to be energized and contracted, and the second energized spring drives the second pawl 44 to rotate into the rotating groove, and the output shaft of the motor 21 drives the worm 22 to rotate forward, the worm 22 drives the worm wheel 23 to rotate forward, the worm wheel 23 drives the drive shaft 24 to rotate forward, the drive shaft 24 drives the sleeve 56 to rotate forward, and the sleeve 56 drives the square cylinder 5 5 rotates forward, because the first pawl 43 abuts against the ratchet wheel 42, the square cylinder 55 slides in the sliding groove in the direction away from the motor 21, the sleeve 56 drives the support plate 53 to slide, the support plate 53 drives the first rotating shaft 71 and the supporting block 64 to slide, the first rotating shaft 71 drives the first planetary gear 54 to slide to a position meshed with the first large gear 51 and the first outer gear ring 52, the supporting block 64 drives the connecting pipe 65 to slide, the connecting pipe 65 drives the second planetary gear 66 to slide, the second planetary gear 66 is disengaged from the second outer gear ring 62 and the second large gear 61, and at this time the compacting structure 7 is below the digging structure 8.

[0092] When the compacting structure 7 slides to a predetermined position, the motor 21 is controlled to reverse, the output shaft of the motor 21 drives the worm 22 to reverse, the worm 22 drives the worm wheel 23 to reverse, the worm wheel 23 drives the drive shaft 24 to reverse, the drive shaft 24 drives the sleeve 56 to reverse, the sleeve 56 drives the square tube 55 to reverse, because the ratchet 42 slides on the first pawl 43, the square tube 55 drives the ratchet 42 to rotate, the sleeve 56 drives the first outer gear 58 to rotate, the first outer gear 58 drives the inner gear to rotate, the inner gear drives the first large gear 51 to rotate, the first large gear 51 drives the first planetary gear 54 to rotate, the first planetary gear 54 rotates around the first large gear 51 while rotating, and the first planetary gear 54 drives the first rotating shaft 71 revolves around the first large gear 51 while rotating, the first rotating shaft 71 drives the sealing plate 9 to rotate, the support plate 53 drives the support block 64 to revolve around the first large gear 51, the support block 64 drives the second rotating shaft 81 to revolve around the first large gear 51, the first rotating shaft 71 drives the first bevel gear 73 to rotate, the first bevel gear 73 drives the second bevel gear 74 to rotate, the second bevel gear 74 drives the column to rotate, the column drives the first connecting rod 75 to rotate, the first connecting rod 75 drives the second connecting rod 76 to rotate, the second connecting rod 76 drives the sliding column 77 to slide back and forth on the first rotating shaft 71, the sliding column 77 drives the soil pressing plate 78 to move up and down, compacting the land around the blade foot and ensuring that the load distribution on the blade foot is more even.

[0093] After the compacting structure 7 rotates one circle around the first large gear 51, the control motor 21 stops working, the control first energized spring is energized to contract, the control second energized spring is de-energized to stretch, the first energized spring drives the first pawl 43 to rotate into the rotating groove, the second energized spring drives the second pawl 44 to rotate to the initial position, the control motor 21 is reversed, the output shaft of the motor 21 drives the worm 22 to reverse, the worm 22 drives the worm wheel 23 to reverse, the worm wheel 23 drives the drive shaft 24 to reverse, the drive shaft 24 drives the sleeve 56 to reverse, the sleeve 56 drives the square tube 55 to reverse, because the second pawl 44 is against the ratchet 42, the square tube 55 slides in the sliding groove toward the direction close to the motor 21, and the first limit block 57 slides into the installation groove, the sleeve 56 drives the support plate 53 to slide, the support plate 53 drives the first rotating shaft 71 to slide, the first rotating shaft 71 drives the first planetary gear 54 to slide, the first planetary gear 54 is disengaged from the first outer gear ring 52 and the first large gear 51, the first outer gear 58 is disengaged from the inner gear, the second outer gear 59 is engaged with the inner gear, the support plate 53 drives the support block 64 to slide, the support block 64 drives the connecting pipe 65 to slide, the connecting pipe 65 drives the second planetary gear 66 to slide, the second planetary gear 66 is engaged with the second outer gear ring 62 and the second large gear 61, the second limit block 86 slides into the limit groove 67, at this time the compacting structure 7 is above the excavating structure 8.

[0094] When the compacting structure 7 slides to the initial position, the motor 21 is controlled to rotate forward, the output shaft of the motor 21 drives the worm 22 to rotate forward, the worm 22 drives the worm wheel 23 to rotate forward, the worm wheel 23 drives the drive shaft 24 to rotate forward, the drive shaft 24 drives the sleeve 56 to rotate forward, the sleeve 56 drives the square tube 55 to rotate forward, because the ratchet 42 slides on the first pawl 43, the square tube 55 drives the ratchet 42 to rotate, the sleeve 56 drives the first limit block 57 and the second outer gear 59 to rotate, the second outer gear 59 drives the inner gear to rotate, the inner gear drives the first large gear 51 to rotate, to prevent the inner gear from being unable to mesh with the first outer gear 58, the first limit block 57 drives the outer tube 63 to rotate The outer cylinder 63 drives the second large gear 61 to rotate, the second large gear 61 drives the second planetary gear 66 to revolve around the second large gear 61 while rotating, the second planetary gear 66 drives the second limit block 86 to rotate, the second limit block 86 drives the second rotating shaft 81 to revolve around the second large gear 61 while rotating, the second rotating shaft 81 drives the excavator 82 to rotate, the excavator 82 drives the mud discharger 83, the soil drilling knife 84 and the soil breaking knife 85 to rotate, the soil breaking knife 85 initially breaks the hard soil, the soil drilling knife 84 drills into the soil to further cut and excavate the soil layer, the mud discharger 83 discharges the excavated mud to the ground, and the discharged mud is removed by the mud pump.

[0095] During the construction process, the mud pump is started manually to pump out the underground mud and water from the drive shaft 24 to prevent it from affecting the underground construction. When the caisson wall 10 drops to a predetermined elevation, the motor 21 is controlled to stop working, and the lifting device 11 is controlled to drive the top plate 3 to rise, so that the caisson structure can be taken out, and finally the bottom of the caisson wall 10 is sealed.

[0096] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A caisson structure with complex geological foundation, characterized by: The caisson structure comprises a caisson device, a lifting device (11) and a mud pump. The caisson device comprises a shell (1). A top plate (3) is installed at one end of the shell (1). A groove is provided on the top plate (3). One end of the lifting device (11) is installed on one side of the top plate (3). A driving structure (2) is rotatably connected in the groove of the top plate (3). The driving structure (2) is connected to the mud pump through a pipeline. A transmission structure (4), an upper conversion structure (5), a lower conversion structure (6) and a sealing plate (9) are installed in sequence from top to bottom inside the shell (1). The sealing plate (9) rotates at one end of the shell (1). A through groove is provided on the sealing plate (9). The transmission structure (4) is installed below the top plate (3). A soil pressing structure (7) is installed at one end of the upper conversion structure (5). A soil digging structure (8) is installed at one end of the lower conversion structure (6). The lifting device (11) and the mud pump are connected to a control system.

2. A caisson structure for complex geological foundation according to claim 1, characterized in that: The driving structure (2) comprises a motor (21), wherein the motor (21) is mounted above the top plate (3), a worm (22) is mounted on the output shaft of the motor (21), a driving shaft (24) is rotatably mounted in a groove of the top plate (3), the driving shaft (24) is connected to the mud pump via a pipeline, a worm gear (23) is mounted on one end of the driving shaft (24), the worm gear (23) is meshed with the worm (22), an outer surface of the driving shaft (24) is provided with an external thread (25), and the motor (21) is connected to a control system.

3. A caisson structure for complex geological foundation according to claim 2, characterized in that: The transmission structure (4) comprises a support ring (41), wherein the support ring (41) is mounted inside the housing (1), and a rotating groove is provided on the support ring (41), a ratchet (42) is rotatably connected in the rotating groove, a first pawl (43) and a second pawl (44) are rotatably connected on the groove wall of the rotating groove, a first electric spring is mounted on one side of the first pawl (43), and one end of the first electric spring is mounted on the groove wall of the rotating groove, a second electric spring is mounted on one side of the second pawl (44), and one end of the second electric spring is mounted on the groove wall of the rotating groove, a sliding groove is provided on the ratchet (42), an upper conversion structure (5) is slidably connected in the sliding groove, and the first electric spring and the second electric spring are connected to a control system.

4. A caisson structure for complex geological foundation according to claim 3, characterized in that: The upper conversion structure (5) comprises a first large gear (51) and a sleeve (56). One end of the sleeve (56) is connected to a square tube (55). The square tube (55) slides in a sliding groove. An internal thread is provided inside the sleeve (56). The drive shaft (24) is installed in the sleeve (56). The external thread (25) is matched with the internal thread. The outer surface of the sleeve (56) is sequentially installed with a first external gear (58), a second external gear (59), a first limit block (57) and a support plate (53) from top to bottom. The support plate (53) is arranged on the outer surface of the sleeve (56). The first large gear (51) is rotatably connected to one side of the lower conversion structure (6); an inner gear is installed on the inner wall of the first large gear (51); the inner gear is meshed with the first outer gear (58) and the second outer gear (59); a first outer gear ring (52) is installed inside the housing (1); a soil pressing structure (7) is installed at one end of the support plate (53); a first planetary gear (54) is installed at one end of the soil pressing structure (7); the first outer gear ring (52) is meshed with the first planetary gear (54); and the first planetary gear (54) is meshed with the first large gear (51).

5. The complex geological foundation caisson structure according to claim 4, characterized in that: The lower conversion structure (6) comprises an outer cylinder (63), the outer cylinder (63) rotates in the through groove, a second large gear (61) is installed at one end of the outer cylinder (63), the first large gear (51) rotates on one side of the second large gear (61), an outer surface of the outer cylinder (63) is provided with a mounting groove, the mounting groove is adapted to the first limit block (57), a second outer gear ring (62) is installed on the inner wall of the outer shell (1), a support block (64) is installed on one side of the support plate (53), and the The soil compacting structure (7) rotates at one end of the support block (64), and the other end of the support block (64) is slidably connected to the soil digging structure (8). One side of the support block (64) is connected to a connecting pipe (65), and one end of the connecting pipe (65) is rotatably connected to a second planetary gear (66). A limiting groove (67) is provided on the second planetary gear (66), and the second planetary gear (66) is meshed with a second outer gear ring (62), and the second outer gear ring (62) is meshed with a second large gear (61).

6. The complex geological foundation caisson structure according to claim 5, characterized in that: The soil pressing structure (7) comprises a first rotating shaft (71), which rotates at one end of a supporting plate (53); the outer surface of the first rotating shaft (71) is rotatably connected to a sealing shell (72); a first bevel gear (73) is installed on the outer surface of the first rotating shaft (71); a column is rotatably connected to the inner wall of the sealing shell (72); a second bevel gear (74) and a first connecting rod (75) are installed on the column; the first bevel gear (73) and the second bevel gear (74) are meshed; one end of the first connecting rod (75) is rotatably connected to a second connecting rod (76); one end of the second connecting rod (76) is rotatably connected to a sliding column (77); the sliding column (77 slides on the first rotating shaft (71); one end of the sliding column (77) is connected to a soil pressing plate (78).

7. The complex geological foundation caisson structure according to claim 6, characterized in that: The excavation structure (8) comprises a second rotating shaft (81) and a rotating disk. The rotating disk rotates on one side of the support ring (41). The second rotating shaft (81) rotates on one side of the rotating disk. The outer surface of the second rotating shaft (81) is connected with a second limit block (86). The second limit block (86) is matched with the limit groove (67). An excavator (82) is installed at one end of the second rotating shaft (81). The outer surface of the excavator (82) is installed with a mud removal knife (83), a soil drilling knife (84) and a soil breaking knife (85) in sequence from top to bottom.

8. A construction method for a caisson structure with a complex geological foundation, characterized by: Using a complex geological foundation caisson structure as described in any one of claims 1 to 7, the method comprises the following steps: S1. Casting caisson wall; S2, placing the caisson device; S3, compacting the land; S4, digging the land; S5. Take out the caisson device; S6, back cover.

9. The construction method of a caisson structure with a complex geological foundation according to claim 8, characterized in that: The S1 comprises the following steps: S101, manually pouring the caisson wall (10), making the blade foot, and digging the middle ground of the prefabricated caisson position by an excavator; The S2 comprises the following steps: S201, controlling the lifting device (11) to place the caisson structure into the caisson wall (10); S202, controlling the mud pump to start, and pumping underground muddy water out of the drive shaft (24); The S3 comprises the following steps: S301, the control motor (21) is started, the control second energized spring is energized and contracted, the second energized spring drives the second ratchet (44) to rotate into the rotating groove, the output shaft of the motor (21) drives the worm (22) to rotate forward, the worm (22) drives the worm wheel (23) to rotate forward, the worm wheel (23) drives the drive shaft (24) to rotate forward, the drive shaft (24) drives the sleeve (56) to rotate forward, the sleeve (56) drives the square tube (55) to rotate forward, and because the first ratchet (43) abuts against the ratchet wheel (42), the square tube (55) slides in the sliding groove in a direction away from the motor (21); S302, the sleeve (56) drives the support plate (53) to slide, the support plate (53) drives the first rotating shaft (71) and the support block (64) to slide, the first rotating shaft (71) drives the first planetary gear (54) to slide to a position meshing with the first large gear (51) and the first outer gear ring (52), the support block (64) drives the connecting pipe (65) to slide, the connecting pipe (65) drives the second planetary gear (66) to slide, the second planetary gear (66) is disengaged from the second outer gear ring (62) and the second large gear (61), and the soil compacting structure (7) slides to the bottom of the soil excavation structure (8); S303, controlling the motor (21) to rotate in reverse, the output shaft of the motor (21) drives the worm (22) to rotate in reverse, the worm (22) drives the worm wheel (23) to rotate in reverse, the worm wheel (23) drives the driving shaft (24) to rotate in reverse, the driving shaft (24) drives the sleeve (56) to rotate in reverse, the sleeve (56) drives the square tube (55) to rotate in reverse, and because the ratchet (42) slides on the first pawl (43), the square tube (55) drives the ratchet (42) to rotate; S304, the sleeve (56) drives the first outer gear (58) to rotate, the first outer gear (58) drives the inner gear to rotate, the inner gear drives the first large gear (51) to rotate, the first large gear (51) drives the first planetary gear (54) to rotate, the first planetary gear (54) rotates while revolving around the first large gear (51), the first planetary gear (54) drives the first rotating shaft (71) to rotate while revolving around the first large gear (51), the first rotating shaft (71) drives the sealing plate (9) to rotate, the support plate (53) drives the support block (64) to revolve around the first large gear (51), and the support block (64) drives the second rotating shaft (81) to revolve around the first large gear (51); S305, the first rotating shaft (71) drives the first bevel gear (73) to rotate, the first bevel gear (73) drives the second bevel gear (74) to rotate, the second bevel gear (74) drives the column to rotate, the column drives the first connecting rod (75) to rotate, the first connecting rod (75) drives the second connecting rod (76) to rotate, the second connecting rod (76) drives the sliding column (77) to slide back and forth on the first rotating shaft (71), and the sliding column (77) drives the soil pressing plate (78) to move up and down to compact the soil around the blade foot; The S4 comprises the following steps: S401, controlling the first energized spring to contract when energized, controlling the second energized spring to stretch when de-energized, the first energized spring drives the first pawl (43) to rotate into the rotating groove, the second energized spring drives the second pawl (44) to rotate to the initial position, controlling the motor (21) to reverse, the output shaft of the motor (21) drives the worm (22) to reverse, the worm (22) drives the worm wheel (23) to reverse, the worm wheel (23) drives the drive shaft (24) to reverse, the drive shaft (24) drives the sleeve (56) to reverse, the sleeve (56) drives the square tube (55) to reverse, because the second pawl (44) abuts against the ratchet wheel (42), the square tube (55) slides in the sliding groove in a direction close to the motor (21); S402, the first limiting block (57) slides into the installation groove, the sleeve (56) drives the support plate (53) to slide, the support plate (53) drives the first rotating shaft (71) to slide, the first rotating shaft (71) drives the first planetary gear (54) to slide, the first planetary gear (54) is disengaged from the first outer gear ring (52) and the first large gear (51), the first outer gear (58) is disengaged from the inner gear, the second outer gear (59) is engaged with the inner gear, the support plate (53) drives the supporting block (64) to slide, the supporting block (64) drives the connecting pipe (65) to slide, the connecting pipe (65) drives the second planetary gear (66) to slide, the second planetary gear (66) is engaged with the second outer gear ring (62) and the second large gear (61), the second limiting block (86) slides into the limiting groove (67), and the soil compacting structure (7) slides to the top of the soil excavation structure (8); S403, controlling the motor (21) to rotate forward, the output shaft of the motor (21) drives the worm (22) to rotate forward, the worm (22) drives the worm wheel (23) to rotate forward, the worm wheel (23) drives the drive shaft (24) to rotate forward, the drive shaft (24) drives the sleeve (56) to rotate forward, the sleeve (56) drives the square tube (55) to rotate forward, and because the ratchet (42) slides on the first pawl (43), the square tube (55) drives the ratchet (42) to rotate; S404, the sleeve (56) drives the first limit block (57) and the second outer gear (59) to rotate, the second outer gear (59) drives the inner gear to rotate, the inner gear drives the first large gear (51) to rotate, so as to prevent the inner gear from being unable to mesh with the first outer gear (58), the first limit block (57) drives the outer cylinder (63) to rotate, the outer cylinder (63) drives the second large gear (61) to rotate, the second large gear (61) drives the second planetary gear (66) to rotate around the second large gear (61) while rotating on its own, the second planetary gear (66) drives the second limit block (86) to rotate, the second limit block (86) drives the second rotating shaft (81) to rotate on its own while rotating around the second large gear (61); S405, the second rotating shaft (81) drives the excavator (82) to rotate, the excavator (82) drives the mud-discharging knife (83), the soil-drilling knife (84) and the soil-breaking knife (85) to rotate, the soil-breaking knife (85) preliminarily breaks the hard soil, the soil-drilling knife (84) drills into the soil to further cut and dig the soil layer, the mud-discharging knife (83) quickly discharges the excavated mud to the ground, and the excavated mud is removed by a mud pump; The S5 comprises the following steps: S501, when the caisson wall (10) drops to a predetermined elevation, the motor (21) is controlled to stop working, and the lifting device (11) is controlled to drive the top plate (3) to rise, so as to remove the caisson structure; The S6 comprises the following steps: S601, sealing the bottom of the caisson wall (10).

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