Deep foundation pit supporting pile drilling device and use method thereof

Abstract

The present application relates to the technical field of super-thick concrete members, and discloses a deep foundation pit supporting pile drilling device and a use method thereof, which comprises a drilling machine, a drill rod is installed on the drilling machine, a drill bit is installed on the drill rod, the drill bit comprises a drill cylinder, a drill disc is installed at the bottom of the drill cylinder, a connecting plate is installed at the top of the drill cylinder, a soil removal assembly is installed in the drill cylinder, the soil removal assembly comprises a soil scraping mechanism and a cutting mechanism, a supporting plate, a supporting assembly and a third transmission mechanism are installed at the top of the drill cylinder, and a first transmission mechanism is installed at the top of the supporting plate. Through the cooperation of the first transmission mechanism, the second transmission mechanism, the lifting mechanism and the cutting mechanism, the cutting plate can cut and push the soil blocks in the drill cylinder after the first movable plate contacts the tray on the drill rod, so that the soil blocks left in the drill cylinder due to the expansion force can be removed, thereby improving the soil removal efficiency of the equipment.

Description

Technical Field

[0001] This invention relates to the technical field of ultra-thick concrete components, and more specifically, to a drilling device for deep foundation pit support piles and its method of use. Background Technology

[0002] Currently, there are various support methods for large deep foundation pits, mainly including anchored retaining, braced retaining, ordinary cantilever retaining, double-row pile retaining, and diaphragm walls, etc., suitable for different soil conditions and construction environments. In many cities today, construction land is scarce, foundation pits are often deep, basements are close to the land boundary, and there are many important structures such as subway tunnels and existing building foundations around the foundation pit, placing higher demands on foundation pit support. How to ensure the safety of the foundation pit retaining structure while saving space and ensuring that the construction site meets the requirements within limited underground space is a major challenge in the construction of deep foundation pits in urban buildings. To solve the problem of land scarcity and meet the safety requirements of large deep foundation pit support structures, the prestressed concrete cantilever retaining pile technology adopted in the Xi'an North Railway Station parking garage project has become an excellent choice. However, before using this technology, it is usually necessary to use a rotary drilling rig to drill holes in the ground.

[0003] Modern rotary drilling rigs select different drill bits for different soil layers. When rotary drilling through sandy soil layers, the conditions are varied. Sandy soil layers may have high sand content, low soil density, and good flowability, or high soil content, low sand density, and poor flowability. For this situation, we often choose fully enclosed drill bits. These drill bits have a drill barrel with an opening at the bottom. A drill disc is installed at this opening, and the drill disc has openings with drill teeth on one side. A rotating plate is installed at the opening of the rotary disc to close the opening. The top of the barrel has a connection structure for connecting to the drill rod on the drilling rig.

[0004] The drilling process generally involves the following steps: After the drill bit descends to the predetermined depth, it is rotated and pressurized. The rotating plate opens the opening, squeezing the swirling sand into the drill barrel. Once the drill barrel is full, the drill bit is reversed, the rotating plate rotates back to close the bottom of the drill bit, and it is pulled out of the hole. The switch at the bottom of the drill bit is automatically activated, opening the drill disc and emptying the sand from the drill barrel. Currently, the emptying method generally involves swinging the drill barrel or manually striking it. If the sand has low viscosity, the excavation is relatively smooth. However, with highly viscous sand, the sand is squeezed inside the drill barrel, sticking to each other and adhering to the inner wall of the drill barrel. This makes it difficult to expel the sand from the upper part of the drill barrel during excavation, resulting in the problem of sand adhering to the upper part of the drill barrel. Summary of the Invention

[0005] This invention provides a drilling device for deep foundation pit support piles and its usage method, solving the technical problem in related technologies where soil clods remain inside the drill cylinder due to the effects of expansion and adhesion forces.

[0006] This invention provides a drilling device for deep foundation pit support piles and its method of use, including a drilling rig, a drill rod installed on the drilling rig, a drill bit installed on the drill rod, the drill bit including a drill cylinder, a drill disc installed at the bottom of the drill cylinder, and a connecting plate installed at the top of the drill cylinder;

[0007] The drill barrel is equipped with a soil removal assembly, which includes a scraping mechanism and a cutting mechanism. A support plate, a support assembly, and a third transmission mechanism are installed on the top of the drill barrel. A first transmission mechanism is installed on the top of the support plate, and a second transmission mechanism is installed on one side of the support plate. A sliding groove is formed on one side of the connecting plate, and a lifting mechanism is installed at the sliding groove. An upper partition plate is fixedly connected to the inner wall of the connecting plate. The first transmission mechanism includes a first spring fixedly connected to the support plate. A first movable plate is fixedly connected to the top of the first spring, and a first rack and a second rack are fixedly connected to the bottom of the first movable plate. The length direction of the first and second racks is consistent with the length direction of the drill barrel. The first spring is sleeved on the second rack and is used to maintain the extended position of the first and second racks. The second rack is connected to the scraping mechanism and the cutting mechanism through the second transmission mechanism, the support assembly, the third transmission mechanism and the lifting mechanism. The second transmission mechanism, the support assembly, the third transmission mechanism and the lifting mechanism are used to drive the scraping mechanism and the cutting mechanism to run sequentially. The scraping mechanism is used to scrape off the soil clods adhering to the inner wall of the drill barrel. The cutting mechanism is used to cut and push the soil clods adhering to the drill barrel. The first movable plate and the upper tray of the drill rod are arranged accordingly.

[0008] Preferably, the second transmission mechanism includes a first rotating rod rotatably connected to the support plate, and a first gear and a first bevel gear are fixedly connected to the surface of the first rotating rod, with the surface of the first gear meshing with one side of the second rack.

[0009] Preferably, the support assembly includes a support column fixedly connected to the drill barrel, and a third gear is rotatably connected to the top of the support column, the top of the third gear having a ratchet groove.

[0010] Preferably, the third transmission mechanism includes a second rotating rod rotatably connected to the drill barrel, a second bevel gear and a rotating plate are fixedly connected to the surface of the second rotating rod, the surface of the second bevel gear meshes with the surface of the first bevel gear, and the bottom of the rotating plate contacts the top of the ratchet groove.

[0011] Preferably, the lifting mechanism includes a sliding plate slidably connected to a sliding groove, a third rack is fixedly connected to the bottom of one side of the sliding plate, one side of the third rack meshes with the surface of the first gear, and an indirect plate is fixedly connected to the bottom of the other side of the sliding plate.

[0012] Preferably, the indirect plate has a transmission groove inside, and a first stop groove and a second stop groove are respectively opened on both sides of the indirect plate. A second spring is fixedly connected to one side of the first stop groove, and an upper protrusion is fixedly connected to one end of the second spring. A lower protrusion is slidably connected to the bottom of the second stop groove. A rotating component is rotatably installed on the side wall of the transmission groove. First connecting rods are rotatably installed at both ends of the rotating component. The ends of the two first connecting rods away from the rotating component are respectively connected to the upper protrusion and the lower protrusion.

[0013] Preferably, the soil scraping mechanism includes a rotating disk rotatably connected to the inner wall of the connecting plate, a second gear fixedly connected to the top of the rotating disk, the surface of the second gear meshing with the surface of the third gear, and a soil scraping plate fixedly connected to the side wall of the rotating disk, the soil scraping plate contacting the inner wall of the drill barrel.

[0014] Preferably, the cutting mechanism includes a third spring connected to the top of the rotating disk, a second movable plate fixedly connected to the top of the third spring, a ring plate fixedly connected to the top of the second movable plate, a lower partition plate fixedly connected to the inner wall of the ring plate, the top of the lower partition plate being arc-shaped, second connecting rods rotatably mounted on the four sides of the second movable plate, a rotating groove opened on the side wall of the rotating disk, a cutting plate rotatably connected to the side wall of the rotating groove, and the side of the cutting plate near the center of the rotating disk being connected to the second connecting rod.

[0015] Preferably, a locking groove is provided on one side of the drill barrel, and a fixing plate assembly is installed inside the locking groove. The fixing plate assembly includes a gear set rotatably connected to the side wall of the locking groove and a slide rail fixedly connected to the bottom of the locking groove. A sliding tooth plate is slidably connected to the top of the slide rail.

[0016] The above-mentioned method of using a drilling device for deep foundation pit support piles includes the following steps:

[0017] Step 1: Level the land at the construction site, then move the drilling rig to the construction site, and then install the drill bit onto the drill rod;

[0018] Step 2: Operate the lateral movement device in the drilling rig to move the drill bit laterally, thereby moving the drill bit to the construction point. Then, operate the longitudinal movement device in the drilling rig to move the drill bit downward, so that the drill bit can drill a hole at the construction point.

[0019] Step 3: Reverse the longitudinal movement device in the drilling rig to move the drill bit upward, and then move the drill bit to the outside of the borehole. Then, run the lateral movement device in the drilling rig to move the drill bit laterally to the soil discharge position.

[0020] Step 4: Operate the lifting device in the drill pipe so that the drill barrel can move upward independently, allowing the first movable plate to contact the tray at the drill pipe. This causes the first and second racks to move downward. The downward movement of the first rack removes the sliding tooth plate from fixing the drill plate, allowing the soil inside the drill barrel to be discharged. The downward movement of the second rack causes the cutting plate to move in an inward arc, cutting and pushing the soil inside the drill barrel.

[0021] Step 5: Reverse the operation of the lifting device in the drill pipe, allowing the drill barrel to move downwards independently. Then, through the reaction force of the first spring, the first and second racks move upwards. The upward movement of the first rack allows the sliding tooth plate to fix the drill plate after the drill plate is reset, while the upward movement of the second rack allows the rotary disk to rotate, which in turn allows the third spring to scrape away the soil inside the drill barrel.

[0022] The beneficial effects of this invention are as follows:

[0023] 1. The deep foundation pit support pile drilling device and its usage method, through the coordinated use of the first transmission mechanism, the second transmission mechanism, the lifting mechanism and the cutting mechanism, can enable the cutting plate to cut and push the soil blocks inside the drill barrel after the first movable plate contacts the tray on the drill rod, thereby removing the soil blocks left inside the drill barrel due to the expansion force, thus improving the soil removal efficiency of the equipment.

[0024] 2. The drilling device for deep foundation pit support piles and its usage method, through the coordinated use of the first transmission mechanism, the second transmission mechanism, the support component, the third transmission mechanism and the scraping mechanism, can automatically reset the first movable plate after it stops contacting the tray on the drill rod. This allows the second gear to rotate the rotating disk, thereby enabling the scraping plate to remove the soil clods left inside the drill barrel due to adhesion, further improving the equipment's soil removal efficiency.

[0025] 3. The drilling device for deep foundation pit support piles and its usage method, through the coordinated use of the upper protrusion, lower protrusion, rotating part, first connecting rod, upper partition plate, and lower partition plate included in the lifting mechanism, can separate the indirect plate from the lower partition plate on the ring plate when the indirect plate moves to the highest position. Then, the third spring can automatically reset the second movable plate, and the cutting plate can automatically reset. Thus, when the scraper plate scrapes the soil on the drill cylinder, the cutting plate can be prevented from affecting the rotation of the scraper plate, thereby ensuring the operating efficiency of the equipment. Attached Figure Description

[0026] Figure 1 This is a diagram of the main structure of the present invention;

[0027] Figure 2 This is a front sectional view of the structure of the present invention;

[0028] Figure 3 yes Figure 2 Enlarged view of point A;

[0029] Figure 4 yes Figure 2 Enlarged view of point B;

[0030] Figure 5 This is a top sectional view of the structure of the present invention up to the center of the sliding plate;

[0031] Figure 6 This is a top sectional view of the structure of the present invention up to the center of the scraper blade;

[0032] Figure 7 This is a top sectional view of the structure of the present invention up to the center of the pawl;

[0033] Figure 8 yes Figure 7 Enlarged view of point C.

[0034] In the diagram: 1. Drill barrel; 2. Support plate; 3. First transmission mechanism; 4. Second transmission mechanism; 5. Support assembly; 6. Third transmission mechanism; 7. Connecting plate; 8. Lifting mechanism; 9. Soil discharge assembly; 10. Scraping mechanism; 11. Cutting mechanism; 12. Fixed plate assembly; 13. Upper partition plate; 14. First spring; 15. First movable plate; 16. First rack; 17. Second rack; 18. First rotating rod; 19. First gear; 20. First bevel gear; 21. Sliding plate; 22. Third rack; 23. Indirect 24. Plate; 25. Second spring; 26. Upper protrusion; 27. Lower protrusion; 28. Rotating component; 29. ​​First connecting rod; 30. Rotating disk; 31. Second gear; 32. Scraper; 33. Third spring; 34. Second movable plate; 35. Ring plate; 36. Lower partition plate; 37. Second connecting rod; 38. Cutting plate; 39. Support column; 40. Third gear; 41. Second rotating rod; 42. Second bevel gear; 43. Rotating plate; 44. Pawl; 45. Hollow pawl component; 46. Gear set; 47. Slide rail; 48. Sliding tooth plate. Detailed Implementation

[0035] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, features described in some examples may be combined in other examples.

[0036] like Figures 1-8 As shown, a drilling device for deep foundation pit support piles and its method of use include a drilling rig, a drill rod installed on the drilling rig, a drill bit installed on the drill rod, the drill bit including a drill cylinder 1, a locking groove opened on one side of the drill cylinder 1, a fixing plate assembly 12 installed inside the locking groove, the fixing plate assembly 12 including a gear set 45 rotatably connected to the side wall of the locking groove and a slide rail 46 fixedly connected to the bottom of the locking groove, a sliding tooth plate 47 slidably connected to the top of the slide rail 46, a drill disc installed at the bottom of the drill cylinder 1, and a connecting plate 7 installed at the top of the drill cylinder 1;

[0037] In this embodiment, the forward and reverse rotation of the gear set 45 will cause the sliding tooth plate 47 to move laterally at the slide rail 46. When the sliding tooth plate 47 moves laterally outward, it will release the drill plate, allowing the soil inside the drill barrel 1 to be removed. When the sliding tooth plate 47 moves laterally inward, it will fix the drill plate.

[0038] The drill barrel 1 is equipped with a soil removal assembly 9. The soil removal assembly 9 includes a soil scraping mechanism 10 and a cutting mechanism 11. The soil scraping mechanism 10 includes a rotating disk 29 that is rotatably connected to the inner wall of the connecting plate 7. A second gear 30 is fixedly connected to the top of the rotating disk 29. The surface of the second gear 30 meshes with the surface of the third gear 39. A soil scraping plate 31 is fixedly connected to the side wall of the rotating disk 29. The soil scraping plate 31 is in contact with the inner wall of the drill barrel 1.

[0039] In this embodiment, the rotation of the second gear 30 will cause the rotating disk 29 to rotate, which in turn causes the scraper 31 to rotate, so that the scraper 31 can scrape off the soil clods adhering to the inner wall of the drill barrel 1.

[0040] The cutting mechanism 11 includes a third spring 32 connected to the top of the rotating disk 29. A second movable plate 33 is fixedly connected to the top of the third spring 32. A ring plate 34 is fixedly connected to the top of the second movable plate 33. A lower partition plate 35 is fixedly connected to the inner wall of the ring plate 34. The top of the lower partition plate 35 is arc-shaped. Second connecting rods 36 are rotatably installed on the four sides of the second movable plate 33. A rotating groove is opened on the side wall of the rotating disk 29. A cutting plate 37 is rotatably connected to the side wall of the rotating groove. The side of the cutting plate 37 near the center of the rotating disk 29 is connected to the second connecting rod 36.

[0041] In this embodiment, the upward movement of the second movable plate 33 causes the second connecting rod 36 to apply an upward force to the cutting plate 37, which in turn causes the cutting plate 37 to rotate downward on the side close to the inner wall of the drill barrel 1, thereby allowing the cutting plate 37 to cut and push the soil blocks on the inner wall of the drill barrel 1.

[0042] The top of the drill barrel 1 is equipped with a support plate 2, a support assembly 5, and a third transmission mechanism 6. The support assembly 5 includes a support column 38 fixedly connected to the drill barrel 1. A third gear 39 is rotatably connected to the top of the support column 38. A ratchet groove is provided on the top of the third gear 39. The third transmission mechanism 6 includes a second rotating rod 40 rotatably connected to the drill barrel 1. A second bevel gear 41 and a rotating plate 42 are fixedly connected to the surface of the second rotating rod 40. The surface of the second bevel gear 41 meshes with the surface of the first bevel gear 20. The bottom of the rotating plate 42 contacts the top of the ratchet groove.

[0043] In this embodiment, the rotation of the second bevel gear 41 causes the second rotating rod 40 to rotate along with the rotating plate 42. When the rotating plate 42 rotates in the forward direction, the pawl 43 does not apply a rotational force to the third gear 39 because the slot of the third gear 39 is reversed. However, when the rotating plate 42 rotates in the reverse direction, the pawl 43 applies a rotational force to the third gear 39, causing the third gear 39 to rotate. Because the surface of the third gear 39 meshes with the surface of the second gear 30, the third gear 39 causes the second gear 30 to rotate.

[0044] A first transmission mechanism 3 is installed on the top of the support plate 2, and a second transmission mechanism 4 is installed on one side of the support plate 2. The second transmission mechanism 4 includes a first rotating rod 18 rotatably connected to the support plate 2. A first gear 19 and a first bevel gear 20 are fixedly connected to the surface of the first rotating rod 18. The surface of the first gear 19 meshes with one side of the second rack 17.

[0045] In this embodiment, the rotation of the first gear 19 will cause the first rotating rod 18 to rotate along with the first bevel gear 20. Because the first bevel gear 20 meshes with the second bevel gear 41, the rotation of the first bevel gear 20 will drive the second bevel gear 41 to rotate.

[0046] An upper partition plate 13 is fixedly connected to the inner wall of the connecting plate 7. A sliding groove is provided on one side of the connecting plate 7. A lifting mechanism 8 is installed at the sliding groove. The lifting mechanism 8 includes a sliding plate 21 that is slidably connected to the sliding groove. A third rack 22 is fixedly connected to the bottom of one side of the sliding plate 21. One side of the third rack 22 meshes with the surface of the first gear 19. An indirect plate 23 is fixedly connected to the bottom of the other side of the sliding plate 21. A transmission groove is provided inside the indirect plate 23. A first stop groove and a second stop groove are provided on both sides of the indirect plate 23. A second spring 24 is fixedly connected to one side of the first stop groove. An upper protrusion 25 is fixedly connected to one end of the second spring 24. A lower protrusion 26 is slidably connected to the bottom of the second stop groove. A rotating component 27 is rotatably installed on the side wall of the transmission groove. A first connecting rod 28 is rotatably installed at both ends of the rotating component 27. The ends of the two first connecting rods 28 away from the rotating component 27 are respectively connected to the upper protrusion 25 and the lower protrusion 26.

[0047] In this embodiment, when the first gear 19 rotates, the third rack 22 drives the sliding plate 21 and the indirect plate 23 to move upward, which in turn causes the lower protrusion 26 to apply an upward force to the lower partition 35, thereby allowing the lower protrusion 26 to move upward along with the second movable plate 33. When the indirect plate 23 is about to reach the highest point, it will contact the upper partition 13, which will then cause the indirect plate 23 to move inward. The inward movement of the indirect plate 23 will cause the upper first connecting rod 28 to drive the rotating member 27 to rotate, which will then cause the lower first connecting rod 28 to drive the lower protrusion 26 to move inward, thereby allowing the lower protrusion 26 to separate from the lower partition 35.

[0048] The first transmission mechanism 3 includes a first spring 14 fixedly connected to the support plate 2. A first movable plate 15 is fixedly connected to the top of the first spring 14. A first rack 16 and a second rack 17 are fixedly connected to the bottom of the first movable plate 15. The length direction of the first rack 16 and the second rack 17 is consistent with the length direction of the drill barrel 1. The first spring 14 is sleeved on the second rack 17. The first spring 14 is used to maintain the extended position of the first rack 16 and the second rack 17. The second rack 17 is connected to the soil scraping mechanism 10 and the cutting mechanism 11 through the second transmission mechanism 4, the support assembly 5, the third transmission mechanism 6 and the lifting mechanism 8. The second transmission mechanism 4, the support assembly 5, the third transmission mechanism 6 and the lifting mechanism 8 are used to drive the soil scraping mechanism 10 and the cutting mechanism 11 to run sequentially. The soil scraping mechanism 10 is used to scrape away the soil clods adhering to the inner wall of the drill barrel 1. The cutting mechanism 11 is used to cut and push the soil clods adhering to the drill barrel. The first movable plate 15 and the upper tray of the drill rod are arranged accordingly.

[0049] In this embodiment, when the drill barrel 1 moves upward through the lifting device inside the drill rod, the first movable plate 15 will come into contact with the tray on the drill rod, which will then cause the second rack 17 and the first rack 16 to move downward. The downward movement of the first rack 16 will drive the gear set 45 to rotate, and the downward movement of the second rack 17 will drive the first rotating rod 18 to rotate.

[0050] The above-mentioned method of using a drilling device for deep foundation pit support piles includes the following steps:

[0051] Step 1: Level the land at the construction site, then move the drilling rig to the construction site, and then install the drill bit onto the drill rod.

[0052] Step 2: Operate the lateral movement device in the drilling rig to move the drill bit laterally, thereby moving the drill bit to the construction point. Then, operate the longitudinal movement device in the drilling rig to move the drill bit downward, so that the drill bit can drill a hole at the construction point.

[0053] Step 3: Reverse the longitudinal movement device in the drilling rig to move the drill bit upward, and then move the drill bit to the outside of the borehole. Then, run the lateral movement device in the drilling rig to move the drill bit laterally to the soil discharge position.

[0054] Step 4: Operate the lifting device in the drill pipe so that the drill barrel 1 can move upward independently, allowing the first movable plate 15 to contact the tray at the drill pipe, and then causing the first rack 16 and the second rack 17 to move downward. The downward movement of the first rack 16 causes the sliding tooth plate 47 to no longer fix the drill plate, thereby expelling the soil inside the drill barrel 1. The downward movement of the second rack 17 causes the cutting plate 37 to move in an inward arc shape, thereby cutting and pushing the soil inside the drill barrel 1.

[0055] Step 5: Reverse the operation of the lifting device in the drill pipe, so that the drill barrel 1 can move downwards independently. Then, through the reaction force of the first spring 14, the first rack 16 and the second rack 17 can move upwards. The upward movement of the first rack 16 can fix the drill plate 47 after the drill plate is reset, while the upward movement of the second rack 17 can make the rotating disk 29 rotate, which in turn allows the third spring 32 to scrape away the soil inside the drill barrel 1.

[0056] Working principle: During the soil removal process in the drill barrel, the first movable plate 15 first contacts the tray via the lifting device inside the drill rod. This causes the first movable plate 15 to be subjected to a downward force, which in turn causes the first movable plate 15 to move downward along with the first rack 16 and the second rack 17. The first rack 16 drives the gear set 45 to rotate, which in turn drives the sliding plate 47 to move outward, thus automatically opening the drill plate and allowing some of the soil inside the drill barrel 1 to be discharged. The downward movement of the second rack 17 causes the first rotating rod 18 to rotate, which in turn drives the third rack 22 to move upward along with the indirect plate 23 and the first bevel gear 20. The upward movement of the indirect plate 23 drives the second movable plate 17 to rotate. The movable plate 33 moves upward, which in turn drives the cutting plate 37 to move in an arc shape via the second connecting rod 36. This allows the cutting plate 37 to push and cut the soil that has not been discharged from the drill barrel downward, thereby reducing the volume of soil in the drill barrel. When the indirect plate 23 is about to move to its highest point, it will cause the upper partition plate 13 to contact the upper protrusion 25, which will then move the upper protrusion 25 inward. The inward movement of the upper protrusion 25 will cause the first connecting rod 28 to drive the rotating component 27 to rotate, which will then cause the lower protrusion 26 to move inward, thereby separating the lower protrusion 26 from the lower partition plate 35. Then, the reaction force of the third spring 32 will drive the second movable plate 33 to return to its original position. The return movement of the second movable plate 33 will cause... The cutting plate 37 moves to its reset position, and the rotation of the first bevel gear 20 drives the second bevel gear 41 to rotate, which in turn causes the rotating plate 42 to rotate in the forward direction. Because the groove of the third gear 39 is reversed, the pawl 43 cannot exert force on the third gear 39, thus preventing the third gear 39 from rotating. Then, the drill barrel 1 moves downward, thereby freeing the upper degree of freedom of the first movable plate 15. Then, through the reaction force of the first spring 14, the first movable plate 15, along with the first rack 16 and the second rack 17, moves upward. The upward movement of the first rack 16 causes the sliding plate 47 to move to its reset position, and the upward movement of the second rack 17 drives the third rack 22, along with the indirect plate 23, to move upward. The indirect plate 23 moves downwards, and the first bevel gear 20 rotates. During this downward movement, the upper protrusion 25 first contacts the upper partition 13, causing both the upper and lower protrusions 25 and 26 to move inwards. Then, due to the reset of the second spring 24, the indirect plate 23 continues to move downwards, causing the lower protrusion 26 to contact the lower partition 35. This causes both the lower and upper protrusions 26 and 25 to move inwards. When the indirect plate 23 reaches its lowest position, the lower protrusion 26 no longer contacts the lower partition 35. Then, due to the reset of the second spring 24, the lower partition 35 restricts the upper part of the lower protrusion 26, allowing the indirect plate 23 to reconnect with the ring plate 34. Meanwhile, the first bevel gear 20 rotates...This will drive the second bevel gear 41 to rotate, which in turn causes the rotating plate 42 to rotate in the opposite direction. The reverse rotation of the rotating plate 42 will cause the pawl 43 to exert a rotational force on the third gear 39, which in turn causes the third gear 39 to drive the second gear 30 to rotate. This allows the scraper plate 31 to scrape away the soil on the inner wall of the drill barrel 1, thereby eliminating the soil's adhesion and completely removing it.

[0057] The embodiments of this example have been described above. However, this example is not limited to the specific implementation methods described above. The specific implementation methods described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms based on the guidance of this example, and all of them are within the protection scope of this example.

Claims

1. A drilling device for deep foundation pit support piles, characterized in that, The equipment includes a drilling rig, on which a drill rod is installed, and on which a drill bit is installed. The drill bit includes a drill cylinder (1), a drill disc is installed at the bottom of the drill cylinder (1), and a connecting plate (7) is installed at the top of the drill cylinder (1). The drill barrel (1) is equipped with a soil removal assembly (9), which includes a soil scraping mechanism (10) and a cutting mechanism (11). The top of the drill barrel (1) is equipped with a support plate (2), a support assembly (5), and a third transmission mechanism (6). The top of the support plate (2) is equipped with a first transmission mechanism (3), and a second transmission mechanism (4) is installed on one side of the support plate (2). A sliding groove is provided on one side of the connecting plate (7), and a lifting mechanism (8) is installed at the sliding groove. An upper partition plate (13) is fixedly connected to the inner wall of the connecting plate (7). The first transmission mechanism (3) includes a first spring (14) fixedly connected to the support plate (2). The top of the first spring (14) is fixedly connected to a first movable plate (15), and the bottom of the first movable plate (15) is fixedly connected to a first rack (16) and a second rack (17). (16) and the length direction of the second rack (17) are consistent with the length direction of the drill barrel (1). The first spring (14) is sleeved on the second rack (17). The first spring (14) is used to maintain the extended position of the first rack (16) and the second rack (17). The second rack (17) is connected to the scraping mechanism (10) and the cutting mechanism (11) through the second transmission mechanism (4), the support assembly (5), the third transmission mechanism (6) and the lifting mechanism (8). The second transmission mechanism (4), the support assembly (5), the third transmission mechanism (6) and the lifting mechanism (8) are used to drive the scraping mechanism (10) and the cutting mechanism (11) to run in sequence. The scraping mechanism (10) is used to scrape away the soil clods stuck to the inner wall of the drill barrel (1). The cutting mechanism (11) is used to cut and push the soil clods stuck to the drill barrel. The first movable plate (15) and the upper tray of the drill rod are arranged accordingly. The second transmission mechanism (4) includes a first rotating rod (18) rotatably connected to the support plate (2). A first gear (19) and a first bevel gear (20) are fixedly connected to the surface of the first rotating rod (18). The surface of the first gear (19) meshes with one side of the second rack (17). The support assembly (5) includes a support column (38) fixedly connected to the drill barrel (1), and a third gear (39) is rotatably connected to the top of the support column (38). A ratchet groove is provided on the top of the third gear (39). The third transmission mechanism (6) includes a second rotating rod (40) rotatably connected to the drill barrel (1). A second bevel gear (41) and a rotating plate (42) are fixedly connected to the surface of the second rotating rod (40). The surface of the second bevel gear (41) meshes with the surface of the first bevel gear (20). The bottom of the rotating plate (42) contacts the top of the ratchet groove. The lifting mechanism (8) includes a sliding plate (21) that is slidably connected to the sliding groove. A third rack (22) is fixedly connected to the bottom of one side of the sliding plate (21). One side of the third rack (22) meshes with the surface of the first gear (19). An indirect plate (23) is fixedly connected to the bottom of the other side of the sliding plate (21). The indirect plate (23) has a transmission groove inside. The indirect plate (23) has a first stop groove and a second stop groove on both sides. A second spring (24) is fixedly connected to one side of the first stop groove. An upper protrusion (25) is fixedly connected to one end of the second spring (24). A lower protrusion (26) is slidably connected to the bottom of the second stop groove. A rotating component (27) is rotatably installed on the side wall of the transmission groove. A first connecting rod (28) is rotatably installed at both ends of the rotating component (27). The ends of the two first connecting rods (28) away from the rotating component (27) are respectively connected to the upper protrusion (25) and the lower protrusion (26).

2. The drilling device for deep foundation pit support piles according to claim 1, characterized in that, The soil scraping mechanism (10) includes a rotating disk (29) rotatably connected to the inner wall of the connecting plate (7). A second gear (30) is fixedly connected to the top of the rotating disk (29). The surface of the second gear (30) meshes with the surface of the third gear (39). A soil scraping plate (31) is fixedly connected to the side wall of the rotating disk (29). The soil scraping plate (31) contacts the inner wall of the drill barrel (1).

3. The drilling device for deep foundation pit support piles according to claim 2, characterized in that, The cutting mechanism (11) includes a third spring (32) connected to the top of the rotating disk (29). The top of the third spring (32) is fixedly connected to a second movable plate (33). The top of the second movable plate (33) is fixedly connected to a ring plate (34). The inner wall of the ring plate (34) is fixedly connected to a lower partition plate (35). The top of the lower partition plate (35) is arc-shaped. The four sides of the second movable plate (33) are rotatably mounted with second connecting rods (36). The side wall of the rotating disk (29) is provided with a rotating groove. The side wall of the rotating groove is rotatably connected to a cutting plate (37). The side of the cutting plate (37) near the center of the rotating disk (29) is connected to the second connecting rod (36).

4. The drilling device for deep foundation pit support piles according to claim 3, characterized in that, A locking groove is provided on one side of the drill barrel (1), and a fixing plate assembly (12) is installed inside the locking groove. The fixing plate assembly (12) includes a gear set (45) rotatably connected to the side wall of the locking groove and a slide rail (46) fixedly connected to the bottom of the locking groove. A sliding tooth plate (47) is slidably connected to the top of the slide rail (46).

5. The method of using the drilling device for deep foundation pit support piles according to claim 4, characterized in that, Includes the following steps: Step 1: Level the land at the construction site, then move the drilling rig to the construction site, and then install the drill bit onto the drill rod; Step 2: Operate the lateral movement device in the drilling rig to move the drill bit laterally, thereby moving the drill bit to the construction point. Then, operate the longitudinal movement device in the drilling rig to move the drill bit downward, so that the drill bit can drill a hole at the construction point. Step 3: Reverse the longitudinal movement device in the drilling rig to move the drill bit upward, and then move the drill bit to the outside of the borehole. Then, run the lateral movement device in the drilling rig to move the drill bit laterally to the soil discharge position. Step 4: Operate the lifting device in the drill rod so that the drill barrel (1) can move upward independently, and then the first movable plate (15) can contact the tray at the drill rod, and then the first rack (16) and the second rack (17) can move downward. The downward movement of the first rack (16) causes the sliding tooth plate (47) to no longer fix the drill plate, and then the soil inside the drill barrel (1) can be discharged. The downward movement of the second rack (17) causes the cutting plate (37) to move inward in an arc shape, and then the soil inside the drill barrel (1) can be cut and pushed. Step 5: Reverse the operation of the lifting device in the drill pipe so that the drill barrel (1) can move downwards independently. Then, through the reaction force of the first spring (14), the first rack (16) and the second rack (17) can move upwards. The upward movement of the first rack (16) can fix the drill plate (47) after the drill plate is reset. The upward movement of the second rack (17) can make the rotating disk (29) rotate, and then the third spring (32) can scrape away the soil inside the drill barrel (1).

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