Drill bit device for construction of rectangular anti-slide pile by rotary drilling rig

Abstract

The utility model discloses a rotary drilling rig construction rectangular anti-slide pile drill bit device which comprises a box body, two reduction gearboxes are arranged in the box body, motors are arranged at the tops of the two reduction gearboxes, transmission shafts are symmetrically arranged on the two sides of the reduction gearboxes, and rotating shafts are arranged on the two sides of the outer portion of the box body and aligned with the transmission shafts. The rotating shaft is connected with a rotary digging wheel, a plurality of mounting seats are arranged on the rotary digging wheel, and drill bits are arranged on the mounting seats; a cover plate is installed at an opening in the top end of the box body and detachably connected with the box body. The pair of reduction gearboxes are arranged in the box body, the two pairs of rotary digging wheels are driven by the reduction gearboxes, the plurality of drill bits are arranged on the rotary digging wheels, and the drill bits are driven by the rotation of the rotary digging wheels to break soil, so that irregular holes can be trimmed into rectangular holes. The drill bit can be efficiently matched with a rotary drilling machine to quickly repair irregular holes into rectangular holes, and construction of rectangular anti-slide piles is greatly facilitated.

Description

Technical Field

[0001] This utility model relates to the field of drill bit technology, specifically to a drill bit device for constructing rectangular anti-slide piles using a rotary drilling rig. Background Technology

[0002] Anti-slide piles are divided into circular piles and rectangular piles. In recent years, rectangular anti-slide piles have been increasingly used in practical engineering. Construction of rectangular anti-slide piles typically requires drilling rectangular holes first. While there are various drilling devices on the market, these typically only produce circular holes; rectangular holes are difficult to form in a single drill bit. Therefore, construction companies often use rotary drilling rigs with circular drill bits to drill multiple circular holes side-by-side, and then refine the holes to create rectangular holes (e.g., rectangular holes). Figure 1 (As shown). However, there is currently a lack of drill bits on the market that can shape irregular holes into rectangular holes, which is not conducive to the rapid construction of rectangular anti-slide piles. Utility Model Content

[0003] The purpose of this utility model is to provide a rotary drilling rig for constructing rectangular anti-slide piles, which aims to solve the problem that there is currently a lack of drill bits on the market that can shape irregular holes into rectangular holes, which is not conducive to the rapid construction of rectangular anti-slide piles.

[0004] This utility model is implemented as follows:

[0005] A rotary drilling rig for constructing rectangular anti-slide piles includes a housing. Inside the housing are two reduction gearboxes, each with a motor on its top. A drive shaft is symmetrically positioned on both sides of each reduction gearbox. Rotary shafts are located on both sides of the housing, aligned with the drive shafts. Each rotary shaft is connected to a rotary drilling wheel, which has multiple mounting seats, each with a drill bit. A cover plate is installed at the top opening of the housing, and the cover plate is detachably connected to the housing.

[0006] Preferably, the top of the housing is provided with a connecting edge, and the connecting edge is provided with multiple connecting holes; the outer side of the rotating shaft is provided with a plug shaft in the middle, the end of the plug shaft is provided with multiple studs, and the studs are provided with nuts.

[0007] Preferably, the rotary drilling wheel has a slot in the middle of the side facing the housing, and the side of the rotary drilling wheel facing the outer side has multiple countersunk holes aligned with the slot, the countersunk holes being aligned with studs.

[0008] Preferably, a connector is provided at the center of the top of the cover plate, and multiple reinforcing plates are provided between the connector and the cover plate. A flange is provided at the top of the connector, and multiple flange holes are evenly provided on the flange. Multiple bolt holes are provided on the edge of the cover plate, and the bolt holes are aligned with the connector holes.

[0009] Preferably, it also includes guide tubes and buffer rods. Four guide tubes are provided, and the four guide tubes are respectively installed at the corner positions near the cover plate. The openings of the guide tubes are set outwards, and the buffer rods are inserted into the guide tubes and connected to the guide tubes.

[0010] Preferably, the guide tube has a through hole at the end without an opening, and a fixing foot at the bottom of the end of the guide tube with the through hole. The fixing foot has multiple fixing holes, and multiple corner plates are provided between the guide tube and the fixing foot.

[0011] Preferably, the buffer rod has a guide plate at one end facing the opening of the conduit, a buffer spring in the middle of the guide plate, an insert rod in the middle of the buffer spring, one end of the insert rod passing through a through hole, and a pressure cap at the end of the insert rod passing through the through hole, the pressure cap pressing against the guide tube.

[0012] Preferably, it also includes an arc-shaped buffer joint, wherein the outer end of the buffer rod is provided with a mounting joint, the mounting joint is provided with a threaded groove in the middle, the end of the arc-shaped buffer joint facing the threaded groove is provided with a mounting platform, the middle of the mounting platform is provided with a mounting post, and the mounting post is threadedly connected to the threaded groove.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model features a pair of reduction gearboxes inside the housing, which drive two pairs of rotary drilling wheels. Each rotary drilling wheel has multiple drill bits. The rotation of the wheels drives the drill bits to break the soil, allowing irregular holes to be transformed into rectangular holes. Using these drill bits, an efficient rotary drilling machine can quickly and efficiently transform irregular holes into rectangular ones, greatly facilitating the construction of rectangular anti-slide piles.

[0015] 2. This utility model features a guide tube with a buffer rod inserted inside. The buffer rod can cushion the drill bit when it shakes, preventing it from sticking too close to the hole wall and causing the hole to deviate.

[0016] 3. By setting an arc-shaped buffer joint, this utility model can increase the contact area between the buffer rod and the hole wall, and can also accommodate more buffer angles. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the existing technology for excavating rectangular holes;

[0018] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 3 This is a structural schematic diagram of the box body of this utility model;

[0020] Figure 4 This is a structural schematic diagram of the rotary drilling wheel of this utility model from a front-end oblique downward view.

[0021] Figure 5 This is a structural schematic diagram of the rotary drilling wheel of this utility model from a rear-end oblique downward view;

[0022] Figure 6 This is a schematic diagram of the structure of the cover plate of this utility model;

[0023] Figure 7 This is a schematic diagram of the structure of the guide tube of this utility model;

[0024] Figure 8 This is a schematic diagram of the structure of the buffer rod of this utility model;

[0025] Figure 9 This is a schematic diagram of the structure of the arc-shaped buffer joint of this utility model.

[0026] In the diagram: 1. Housing; 11. Gearbox; 12. Drive shaft; 13. Motor; 14. Rotary shaft; 15. Insert shaft; 16. Stud; 17. Nut; 18. Connecting edge; 19. Connecting hole; 2. Rotary drilling wheel; 21. Countersunk hole; 22. Mounting base; 23. Drill bit; 24. Slot; 3. Cover plate; 31. Connector; 32. Reinforcing plate; 33. Flange; 34. Flange hole; 35. Bolt hole; 4. Guide tube; 41. Through hole; 42. Fixing foot; 43. Fixing hole; 44. Angle plate; 5. Buffer rod; 51. Mounting joint; 52. Threaded groove; 53. Guide plate; 54. Buffer spring; 55. Insert rod; 56. Pressure cap; 6. Arc-shaped buffer joint; 61. Mounting platform; 62. Mounting column. Detailed Implementation

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] The following description, in conjunction with the accompanying drawings and specific embodiments, provides further details:

[0029] Example 1

[0030] like Figure 2 , Figure 3 and Figure 4As shown, a rotary drilling rig for constructing rectangular anti-slide piles includes a housing 1, which facilitates the installation of various components. Inside the housing 1 are two reduction gearboxes 11, each with a motor 13 on its top. Drive shafts 12 are symmetrically arranged on both sides of each reduction gearbox 11. Rotary shafts 14 are located on both sides of the housing 1, aligned with the drive shafts 12, and connected to rotary drilling wheels 2. This structure allows the motor 13 to drive the internal mechanism of the reduction gearboxes 11 to rotate, which in turn drives the drive shafts 12 and rotary shafts 14, thus rotating the rotary drilling wheels 2. The rotary drilling wheels 2 have multiple mounting seats 22, each with a drill bit 23 for easy and efficient breaking through the soil. A cover plate 3 is installed at the top opening of the housing 1, detachably connected to the housing 1. The cover plate 3 facilitates sealing the top opening of the housing 1 and also allows for easy access to other equipment.

[0031] like Figure 3 As shown, the top of the housing 1 has a connecting edge 18, and the connecting edge 18 has multiple connecting holes 19; the connecting edge 18 and the connecting holes 19 facilitate the connection between the housing 1 and the cover plate 3. The outer side of the rotating shaft 14 has a insertion shaft 15 in the center, which is conveniently inserted into the slot 24 for stable connection between the rotating shaft 14 and the housing 1. The end of the insertion shaft 15 has multiple studs 16, and each stud 16 has a nut 17; the engagement of the studs 16 and the nut 17 facilitates the fixing of the rotary drilling wheel 2.

[0032] like Figure 4 and Figure 5 As shown, the rotary drilling wheel 2 has a slot 24 in the center of the side facing the housing 1. The slot 24 facilitates the connection between the rotary drilling wheel 2 and the shaft 15. The side of the rotary drilling wheel 2 facing outwards has multiple countersunk holes 21 aligned with the slot 24. The countersunk holes 21 are aligned with the studs 16. The countersunk holes 21 facilitate the mating of the studs 16 and the nuts 17, thereby facilitating the fixing and use of the rotary drilling wheel 2.

[0033] like Figure 6 As shown, a connector 31 is located at the center of the top of the cover plate 3. Multiple reinforcing plates 32 are positioned between the connector 31 and the cover plate 3. The fit between the connector 31 and the reinforcing plates 32 facilitates a stable connection between the connector 31 and the cover plate 3. A flange 33 is located at the top of the connector 31. Multiple flange holes 34 are evenly distributed on the flange 33. The fit between the flange 33 and the flange holes 34 facilitates the connection between the cover plate 3 and the drill rod of the rotary drilling rig. Multiple bolt holes 35 are located along the edge of the cover plate 3, aligned with the connecting holes 19. This structure facilitates the connection between the cover plate 3 and the housing 1.

[0034] Example 2

[0035] like Figure 2 , Figure 3 and Figure 4As shown, a rotary drilling rig for constructing rectangular anti-slide piles includes a housing 1, which facilitates the installation of various components. Inside the housing 1 are two reduction gearboxes 11, each with a motor 13 on its top. Drive shafts 12 are symmetrically arranged on both sides of each reduction gearbox 11. Rotary shafts 14 are located on both sides of the housing 1, aligned with the drive shafts 12, and connected to rotary drilling wheels 2. This structure allows the motor 13 to drive the internal mechanism of the reduction gearboxes 11 to rotate, which in turn drives the drive shafts 12 and rotary shafts 14, thus rotating the rotary drilling wheels 2. The rotary drilling wheels 2 have multiple mounting seats 22, each with a drill bit 23 for easy and efficient breaking through the soil. A cover plate 3 is installed at the top opening of the housing 1, detachably connected to the housing 1. The cover plate 3 facilitates sealing the top opening of the housing 1 and also allows for easy access to other equipment.

[0036] like Figure 3 As shown, the top of the housing 1 has a connecting edge 18, and the connecting edge 18 has multiple connecting holes 19; the connecting edge 18 and the connecting holes 19 facilitate the connection between the housing 1 and the cover plate 3. The outer side of the rotating shaft 14 has a insertion shaft 15 in the center, which is conveniently inserted into the slot 24 for stable connection between the rotating shaft 14 and the housing 1. The end of the insertion shaft 15 has multiple studs 16, and each stud 16 has a nut 17; the engagement of the studs 16 and the nut 17 facilitates the fixing of the rotary drilling wheel 2.

[0037] like Figure 4 and Figure 5 As shown, the rotary drilling wheel 2 has a slot 24 in the center of the side facing the housing 1. The slot 24 facilitates the connection between the rotary drilling wheel 2 and the shaft 15. The side of the rotary drilling wheel 2 facing outwards has multiple countersunk holes 21 aligned with the slot 24. The countersunk holes 21 are aligned with the studs 16. The countersunk holes 21 facilitate the mating of the studs 16 and the nuts 17, thereby facilitating the fixing and use of the rotary drilling wheel 2.

[0038] like Figure 6 As shown, a connector 31 is located at the center of the top of the cover plate 3. Multiple reinforcing plates 32 are positioned between the connector 31 and the cover plate 3. The fit between the connector 31 and the reinforcing plates 32 facilitates a stable connection between the connector 31 and the cover plate 3. A flange 33 is located at the top of the connector 31. Multiple flange holes 34 are evenly distributed on the flange 33. The fit between the flange 33 and the flange holes 34 facilitates the connection between the cover plate 3 and the drill rod of the rotary drilling rig. Multiple bolt holes 35 are located along the edge of the cover plate 3, aligned with the connecting holes 19. This structure facilitates the connection between the cover plate 3 and the housing 1.

[0039] like Figure 2As shown, it also includes a guide tube 4 and a buffer rod 5. There are four guide tubes 4, which are installed near the corner of the cover plate 3. The opening of the guide tube 4 is set outward, and the buffer rod 5 is inserted into the guide tube 4 and connected to the guide tube 4. This structure is to prevent the drill bit 23 from sticking to the hole wall under the action of the buffer rod 5 when it moves inside the hole, thus avoiding the deviation of the hole.

[0040] like Figure 7 As shown, the end of the guide tube 4 without an opening has a through hole 41, which facilitates a stable connection between the buffer rod 5 and the guide tube 4. The bottom of the end of the guide tube 4 with the through hole 41 has a fixing foot 42, which has multiple fixing holes 43. The fit between the fixing holes 43 and the fixing foot 42 allows for easy fixing of the guide tube 4 with bolts. Multiple angle plates 44 are provided between the guide tube 4 and the fixing foot 42 to ensure sufficient stability between the fixing foot 42 and the guide tube 4.

[0041] like Figure 8 As shown, a guide plate 53 is provided at the end of the buffer rod 5 facing the opening of the guide tube 4. The guide plate 53 facilitates insertion into the guide tube 4 and ensures stable extension and contraction of the buffer rod 5. A buffer spring 54 is provided in the middle of the guide plate 53. The buffer spring 54 provides a restoring force to the buffer rod 5 when it is compressed. An insertion rod 55 is provided in the middle of the buffer spring 54. One end of the insertion rod 55 passes through the through hole 41, and a pressure cap 56 is provided at the end of the insertion rod 55 passing through the through hole 41. The pressure cap 56 presses tightly against the guide tube 4. This structure facilitates a stable connection between the buffer rod 5 and the guide tube 4.

[0042] Example 3

[0043] like Figure 2 , Figure 3 and Figure 4 As shown, a rotary drilling rig for constructing rectangular anti-slide piles includes a housing 1, which facilitates the installation of various components. Inside the housing 1 are two reduction gearboxes 11, each with a motor 13 on its top. Drive shafts 12 are symmetrically arranged on both sides of each reduction gearbox 11. Rotary shafts 14 are located on both sides of the housing 1, aligned with the drive shafts 12, and connected to rotary drilling wheels 2. This structure allows the motor 13 to drive the internal mechanism of the reduction gearboxes 11 to rotate, which in turn drives the drive shafts 12 and rotary shafts 14, thus rotating the rotary drilling wheels 2. The rotary drilling wheels 2 have multiple mounting seats 22, each with a drill bit 23 for easy and efficient breaking through the soil. A cover plate 3 is installed at the top opening of the housing 1, detachably connected to the housing 1. The cover plate 3 facilitates sealing the top opening of the housing 1 and also allows for easy access to other equipment.

[0044] like Figure 3As shown, the top of the housing 1 has a connecting edge 18, and the connecting edge 18 has multiple connecting holes 19; the connecting edge 18 and the connecting holes 19 facilitate the connection between the housing 1 and the cover plate 3. The outer side of the rotating shaft 14 has a insertion shaft 15 in the center, which is conveniently inserted into the slot 24 for stable connection between the rotating shaft 14 and the housing 1. The end of the insertion shaft 15 has multiple studs 16, and each stud 16 has a nut 17; the engagement of the studs 16 and the nut 17 facilitates the fixing of the rotary drilling wheel 2.

[0045] like Figure 4 and Figure 5 As shown, the rotary drilling wheel 2 has a slot 24 in the center of the side facing the housing 1. The slot 24 facilitates the connection between the rotary drilling wheel 2 and the shaft 15. The side of the rotary drilling wheel 2 facing outwards has multiple countersunk holes 21 aligned with the slot 24. The countersunk holes 21 are aligned with the studs 16. The countersunk holes 21 facilitate the mating of the studs 16 and the nuts 17, thereby facilitating the fixing and use of the rotary drilling wheel 2.

[0046] like Figure 6 As shown, a connector 31 is located at the center of the top of the cover plate 3. Multiple reinforcing plates 32 are positioned between the connector 31 and the cover plate 3. The fit between the connector 31 and the reinforcing plates 32 facilitates a stable connection between the connector 31 and the cover plate 3. A flange 33 is located at the top of the connector 31. Multiple flange holes 34 are evenly distributed on the flange 33. The fit between the flange 33 and the flange holes 34 facilitates the connection between the cover plate 3 and the drill rod of the rotary drilling rig. Multiple bolt holes 35 are located along the edge of the cover plate 3, aligned with the connecting holes 19. This structure facilitates the connection between the cover plate 3 and the housing 1.

[0047] like Figure 2 As shown, it also includes a guide tube 4 and a buffer rod 5. There are four guide tubes 4, which are installed near the corner of the cover plate 3. The opening of the guide tube 4 is set outward, and the buffer rod 5 is inserted into the guide tube 4 and connected to the guide tube 4. This structure is to prevent the drill bit 23 from sticking to the hole wall under the action of the buffer rod 5 when it moves inside the hole, thus avoiding the deviation of the hole.

[0048] like Figure 7 As shown, the end of the guide tube 4 without an opening has a through hole 41, which facilitates a stable connection between the buffer rod 5 and the guide tube 4. The bottom of the end of the guide tube 4 with the through hole 41 has a fixing foot 42, which has multiple fixing holes 43. The fit between the fixing holes 43 and the fixing foot 42 allows for easy fixing of the guide tube 4 with bolts. Multiple angle plates 44 are provided between the guide tube 4 and the fixing foot 42 to ensure sufficient stability between the fixing foot 42 and the guide tube 4.

[0049] like Figure 8As shown, a guide plate 53 is provided at the end of the buffer rod 5 facing the opening of the guide tube 4. The guide plate 53 facilitates insertion into the guide tube 4 and ensures stable extension and contraction of the buffer rod 5. A buffer spring 54 is provided in the middle of the guide plate 53. The buffer spring 54 provides a restoring force to the buffer rod 5 when it is compressed. An insertion rod 55 is provided in the middle of the buffer spring 54. One end of the insertion rod 55 passes through the through hole 41, and a pressure cap 56 is provided at the end of the insertion rod 55 passing through the through hole 41. The pressure cap 56 presses tightly against the guide tube 4. This structure facilitates a stable connection between the buffer rod 5 and the guide tube 4.

[0050] like Figure 2 and Figure 9 As shown, it also includes an arc-shaped buffer joint 6. The outer end of the buffer rod 5 is provided with a mounting joint 51, and the mounting joint 51 has a threaded groove 52 in the middle. The fit between the mounting joint 51 and the threaded groove 52 facilitates connection with the arc-shaped buffer joint 6. The end of the arc-shaped buffer joint 6 facing the threaded groove 52 has a mounting platform 61, and the middle of the mounting platform 61 has a mounting post 62. The mounting post 62 is threadedly connected to the threaded groove 52. This structure facilitates the connection between the arc-shaped buffer joint 6 and the mounting joint 51, and facilitates the disassembly, assembly, and replacement of the arc-shaped buffer joint 6.

[0051] Working principle: In use, assemble all components of the housing 1, connect the motor 13 to the power supply, and let the motor 13's wires pass through the cover plate 3. Then connect the rotary drilling rig's drill rod to the connector 31, and connect the motor 13's wires to the power supply line. By energizing the motor 13, it drives the rotary drilling wheel 2 to rotate. Driven by the rotary drilling rig's drill rod, the rotary drilling wheel 2 slowly moves down along the irregular hole, thus shaping the irregular hole into a rectangular hole. The soil generated during hole shaping will fall to the bottom of the hole. When too much soil accumulates at the bottom of the hole, a circular drill bit 23 can be used to dredge the soil inside the hole. Then, continue shaping the hole until the entire hole is shaped into a rectangular hole from top to bottom.

[0052] In summary, compared with the prior art, this application, by incorporating a pair of reduction gearboxes 11 inside the housing 1, drives two pairs of rotary drilling wheels 2. Each rotary drilling wheel 2 is equipped with multiple drill bits 23. The rotation of the rotary drilling wheels 2 drives the drill bits 23 to break the soil, allowing irregular holes to be transformed into rectangular holes. Utilizing these drill bits 23 allows for efficient and rapid transformation of irregular holes into rectangular holes in conjunction with the rotary drilling rig, greatly facilitating the construction of rectangular anti-slide piles.

[0053] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A rotary drilling rig for constructing rectangular anti-slide piles, comprising a housing (1), characterized in that, The housing (1) is equipped with two gearboxes (11) inside. The two gearboxes (11) are equipped with motors (13) on the top. The gearboxes (11) are symmetrically equipped with drive shafts (12) on both sides. The housing (1) is equipped with rotating shafts (14) on both sides of the outside, aligned with the drive shafts (12). The rotating shafts (14) are connected to rotary digging wheels (2). The rotary digging wheels (2) are equipped with multiple mounting seats (22). Each mounting seat (22) is equipped with a drill bit (23). A cover plate (3) is installed at the top opening of the housing (1). The cover plate (3) is detachably connected to the housing (1).

2. The rotary drilling rig drilling bit device for constructing rectangular anti-slide piles according to claim 1, characterized in that, The top of the housing (1) is provided with a connecting edge (18), and the connecting edge (18) is provided with multiple connecting holes (19); the rotating shaft (14) is provided with a plug shaft (15) in the middle of the side facing outward, and the end of the plug shaft (15) is provided with multiple studs (16), and the studs (16) are provided with nuts (17).

3. The rotary drilling rig drilling bit device for constructing rectangular anti-slide piles according to claim 2, characterized in that, The rotary drilling wheel (2) has a slot (24) in the middle of the side facing the housing (1), and the side of the rotary drilling wheel (2) facing the outer side has a plurality of countersunk holes (21) aligned with the slot (24), and the countersunk holes (21) are aligned with the studs (16).

4. A rotary drilling rig drilling bit device for constructing rectangular anti-slide piles according to claim 2, characterized in that, The top center of the cover plate (3) is provided with a connector (31), and multiple reinforcing plates (32) are provided between the connector (31) and the cover plate (3). The top of the connector (31) is provided with a flange (33), and multiple flange holes (34) are evenly provided on the flange (33). Multiple bolt holes (35) are provided on the edge of the cover plate (3), and the bolt holes (35) are aligned with the connecting holes (19).

5. A rotary drilling rig drilling bit device for constructing rectangular anti-slide piles according to any one of claims 1-4, characterized in that, It also includes a guide tube (4) and a buffer rod (5). There are four guide tubes (4), which are respectively installed near the corner of the cover plate (3). The guide tubes (4) are set with their openings facing outwards, and the buffer rod (5) is inserted into the guide tube (4) and connected to the guide tube (4).

6. A rotary drilling rig drilling bit device for constructing rectangular anti-slide piles according to claim 5, characterized in that, The guide tube (4) without an opening has a through hole (41) at one end, and the bottom of the end of the guide tube (4) with the through hole (41) has a fixing foot (42). The fixing foot (42) has multiple fixing holes (43), and multiple corner plates (44) are provided between the guide tube (4) and the fixing foot (42).

7. A rotary drilling rig drilling bit device for constructing rectangular anti-slide piles according to claim 6, characterized in that, The buffer rod (5) has a guide plate (53) at one end facing the opening of the conduit. The guide plate (53) has a buffer spring (54) in the middle. The buffer spring (54) has an insert rod (55) in the middle. One end of the insert rod (55) passes through the through hole (41), and the end of the insert rod (55) that passes through the through hole (41) has a pressure cap (56). The pressure cap (56) is pressed against the guide tube (4).

8. A rotary drilling rig drilling bit device for constructing rectangular anti-slide piles according to claim 7, characterized in that, It also includes an arc-shaped buffer joint (6), and the buffer rod (5) has an installation joint (51) at one end facing outward. The installation joint (51) has a threaded groove (52) in the middle. The arc-shaped buffer joint (6) has a mounting platform (61) at one end facing the threaded groove (52). The mounting platform (61) has a mounting post (62) in the middle. The mounting post (62) is threadedly connected to the threaded groove (52).

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