A geotechnical engineering drilling apparatus

By adopting a combination structure of reinforcing piles and reinforcing blocks in the geotechnical drilling equipment, the soil contact area is increased, and the drilling and dust suppression of the drill rod are realized by using a gear transmission system. This solves the problems of drill rod deviation and dust suppression, and improves the stability of drilling and the safety of the working environment.

CN224282525UActive Publication Date: 2026-05-26CHINA NORTH SURVEY DESIGN & RES INST OF ORDNANCE IND CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHINA NORTH SURVEY DESIGN & RES INST OF ORDNANCE IND CO LTD
Filing Date
2025-02-25
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing geotechnical drilling equipment has poor fixation when encountering hard objects, the drill rod is prone to displacement, and there is a lack of effective dust control measures.

Method used

A geotechnical engineering drilling device was designed. The soil contact area is increased by combining reinforced piles and reinforced blocks. The drilling and water spraying dust suppression are achieved by using a gear transmission system.

Benefits of technology

It improved the fixation of the drill pipe, prevented deviation, ensured the stability of the drilling process, and improved the working environment by spraying water to reduce dust.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present disclosure relates to the technical field of geotechnical engineering. An embodiment of the present disclosure provides a geotechnical engineering drilling device, including a base platform. A support is fixedly installed on the top of the base platform. A moving plate is movably installed inside the support. A first motor is fixedly installed on the top of the moving plate. A drill pipe is rotatably installed at the bottom of the moving plate. In the present utility model, through the rotation of the rotating plate, the reinforcement pile is drilled into the soil. Then, through the rotation of the rotating rod, the casing is displaced downward. The downward displacement of the casing will squeeze the reinforcement block into the soil through the slope surface of the reinforcement block, completing secondary reinforcement. Compared with traditional devices, this device can fix the base platform through the reinforcement pile and can also increase the contact area between the reinforcement pile and the soil through four groups of reinforcement blocks. Through the above technical solution, the technical problems of poor fixing effect and easy deviation of the drill pipe in the prior art are solved.
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Description

Technical Field

[0001] The embodiments disclosed herein relate to the field of geotechnical engineering technology, and more specifically, to a geotechnical engineering drilling apparatus. Background Technology

[0002] Geotechnical engineering is an important branch of civil engineering. It mainly studies the mechanical properties and stability of rock and soil masses and their interaction with engineering structures. It involves multiple fields such as foundation treatment, slope stability, tunnel excavation, and underground engineering. Its aim is to ensure the safety and durability of engineering structures. The core task of geotechnical engineering is to solve geological problems encountered in engineering construction through the investigation, analysis and design of rock and soil masses, and to provide reliable foundation and support solutions for engineering projects.

[0003] In the prior art, in order to accurately obtain the physical and mechanical parameters of soil and rock, a drilling device for geotechnical engineering is needed. Current drilling devices, such as the Chinese Patent Publication No. CN215369693U "A Drilling Device for Geotechnical Engineering", involve rotating handles on both sides of a fixed frame. The rotating handles drive the fourth bevel gear fixed to them to rotate, which in turn drives the third bevel gear meshing with it to rotate. The third bevel gear drives the rotating rod fixed to it to rotate, which in turn drives the second threaded rod connected to it to move downward. At the same time, the second threaded rod drives the roller fixed to the bottom to move downward through the support plate until the roller contacts the ground, which then lifts the drilling device to stop, thus achieving a convenient mobility function.

[0004] However, in actual use, when the drill rod extends into the ground and there are hard objects such as rocks in the path of the drill rod, the drill rod will be subject to greater resistance, which will further cause the drill rod and the support at the top of the drill rod to shift. In order to avoid this problem, workers usually use fixing piles to reinforce it. However, at present, the contact area between the pile and the soil is small during reinforcement, and the fixing effect is poor when the upper soil is loose. Therefore, it needs to be improved and optimized. Utility Model Content

[0005] To overcome the above-mentioned defects, the embodiments of this disclosure provide a geotechnical engineering drilling device, which solves the technical problem of poor fixation effect in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a geotechnical engineering drilling device, comprising a base, a support fixedly installed on the top of the base, a movable plate movably installed inside the support, a first motor fixedly installed on the top of the movable plate, and a drill rod rotatably installed on the bottom of the movable plate, wherein the output shaft of the first motor is fixedly connected to the drill rod.

[0007] The base has threaded reinforcing piles on both sides. The outer wall of each reinforcing pile has a spiral groove. A rotating plate is fixedly installed on the top of each reinforcing pile. A rotating rod is rotatably installed on the top of the rotating plate. A sleeve is movably installed inside the reinforcing pile. A limiting groove is opened inside the reinforcing pile. Limiting blocks are movably installed inside the limiting groove on both sides of the sleeve. Four sets of guide grooves are opened at the bottom of the reinforcing pile. Guide blocks are movably installed inside each of the four sets of guide grooves. Reinforcing blocks are fixedly installed on the top of each of the four sets of guide blocks. The four sets of reinforcing blocks are circumferentially arranged outside the threaded rod. One end of each reinforcing block extends through to the outside of the reinforcing pile.

[0008] As a preferred embodiment of this utility model, a spray head is fixedly installed on the top front side of the bracket, and a water tank is fixedly installed on the top of the bracket.

[0009] The water tank has a second lead screw rotatably mounted inside, and a push plate movably mounted inside. The push plate and the second lead screw are threaded together. A water pipe is fixedly mounted on the top of the water tank. One end of the water pipe is connected to the water tank, and the other end of the water pipe is connected to the spray head.

[0010] As a preferred embodiment of this utility model, the side of the reinforcing block facing the inner side of the reinforcing pile has a sloping surface, and the side of the reinforcing block facing the outer side of the reinforcing pile has a cut edge.

[0011] In a preferred embodiment of this utility model, the reinforcing block, the guide block, and the inner wall of the guide groove are elastically connected by a spring, and the sloped surface of the reinforcing block and the threaded rod abut against each other.

[0012] As a preferred embodiment of this utility model, two sets of baffles are fixedly installed on the inner wall of the water tank. The baffles are used to limit the push plate, and the push plate is in close contact with the inner wall of the water tank.

[0013] As a preferred embodiment of this utility model, a second motor is fixedly installed on the top of the bracket, and two sets of gears are rotatably installed on the front and rear sides of the top of the bracket, with the two sets of gears meshing with each other.

[0014] As a preferred embodiment of this utility model, the output shaft of the second motor is fixedly connected to the rear gear, and a first lead screw is fixedly installed at the bottom of the front gear, and the first lead screw is threadedly connected to the moving plate.

[0015] As a preferred embodiment of this utility model, a first bevel gear is rotatably mounted on the right side wall of the water tank, and one end of the first bevel gear is fixedly connected to a second lead screw.

[0016] As a preferred embodiment of this utility model, a second bevel gear is fixedly installed on the top of the front gear, and the second bevel gear and the first bevel gear mesh with each other.

[0017] As a preferred embodiment of this utility model, a water inlet is provided on the left side wall of the water tank for replenishing water used for dust suppression.

[0018] The beneficial effects of the embodiments disclosed herein are as follows:

[0019] 1. In this disclosure, the rotation of the rotating plate causes the reinforcing pile to be drilled into the soil, completing the initial reinforcement. Then, the rotation of the rotating rod causes the casing to move downward. The downward movement of the casing will squeeze the reinforcing block into the soil through the slope surface of the reinforcing block, completing the secondary reinforcement. Compared with traditional devices, this device can fix the base with the reinforcing pile and can also increase the contact area between the reinforcing pile and the soil through four sets of reinforcing blocks, improve the friction, ensure the reinforcement effect, and avoid the displacement and misalignment of the drill rod.

[0020] 2. In this disclosure, the rotation of the gears, through the transmission of the first bevel gear and the second bevel gear, causes the first lead screw and the second lead screw to rotate simultaneously. The rotation of the first lead screw drives the drill rod downward to drill the bit, while the rotation of the second lead screw causes the push plate to displace inside the water tank, squeezing water into the water pipe and spraying it out through the spray head. Compared with traditional devices, this device can simultaneously spray water and reduce dust through the spray head while driving the drill rod downward to drill, preventing workers from inhaling dust and ensuring the working environment for drilling operations. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0022] Figure 1 This is a schematic diagram of the base structure in one embodiment of the present disclosure;

[0023] Figure 2 for Figure 1 A schematic diagram of the rotating plate in the embodiment;

[0024] Figure 3 This is a schematic diagram of the disassembled structure of the reinforcing pile and the foundation in yet another embodiment of this disclosure;

[0025] Figure 4 for Figure 3 A schematic diagram of the cross-sectional structure of the reinforced pile in the embodiment;

[0026] Figure 5 for Figure 3 A schematic diagram of the reinforcing block in the embodiment;

[0027] Figure 6 for Figure 1 A schematic diagram of the water tank in the embodiment;

[0028] Figure 7 for Figure 1 The embodiment is shown in the structural diagram of the water pipe.

[0029] In the diagram: 1. Base; 2. Support; 3. Moving plate; 4. First motor; 5. Drill rod; 6. Reinforcing pile; 7. Spiral groove; 8. Rotating plate; 9. Rotating rod; 10. Threaded rod; 11. Sleeve; 12. Limiting groove; 13. Limiting block; 14. Guide groove; 15. Spring; 16. Reinforcing block; 17. Guide block; 18. Water inlet; 19. Sloping surface; 20. Cut edge; 21. Second motor; 22. First lead screw; 23. Gear; 24. Spray head; 25. First bevel gear; 26. Water tank; 27. Second bevel gear; 28. Second lead screw; 29. ​​Push plate; 30. Baffle; 31. Water pipe. Detailed Implementation

[0030] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0031] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0032] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0033] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0035] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0036] like Figures 1-7 As shown, it illustrates a geotechnical drilling device according to an embodiment of the present disclosure, including a base 1, a support 2 fixedly installed on the top of the base 1, a movable plate 3 movably installed inside the support 2, a first motor 4 fixedly installed on the top of the movable plate 3, and a drill rod 5 rotatably installed on the bottom of the movable plate 3. The output shaft of the first motor 4 and the drill rod 5 are fixedly connected.

[0037] The base 1 has reinforcing piles 6 threadedly connected to both sides. The outer wall of the reinforcing pile 6 has a spiral groove 7. The top of the reinforcing pile 6 is fixedly installed with a rotating plate 8. The top of the rotating plate 8 is rotatably installed with a rotating rod 9. The inside of the reinforcing pile 6 is movably installed with a sleeve 11. The inside of the reinforcing pile 6 has a limiting groove 12. The left and right sides of the sleeve 11 are fixedly installed with limiting blocks 13 that are movably installed inside the limiting groove 12. The bottom of the reinforcing pile 6 has four sets of guide grooves 14. The inside of each of the four sets of guide grooves 14 is movably installed with a guide block 17. The top of each of the four sets of guide blocks 17 is fixedly installed with a reinforcing block 16. The four sets of reinforcing blocks 16 are circumferentially arranged on the outside of the threaded rod 10. One end of the reinforcing block 16 extends through to the outside of the reinforcing pile 6.

[0038] For example, such as Figure 1As shown, when drilling is required, the workers first move the base 1 to a suitable position, then rotate the two sets of rotating plates 8 clockwise. As the rotating plates 8 rotate, the reinforcing pile 6, which is threadedly connected to the base 1, will descend into the soil. After the rotating plates 8 have rotated to their maximum value, the workers stop rotating the rotating plates 8 and begin rotating the rotating rod 9 clockwise. At this time, because the rotating plates 8 have been rotated to their maximum value, the rotation of the rotating rod 9 will not interfere with the fixation of the reinforcing pile 6. Through the rotation of the rotating rod 9, the threaded rod 10 begins to rotate, and the thread... Rod 10 drives the sleeve 11, which is threadedly connected to it, to move downward along the limiting groove 12. Further downward movement of the sleeve 11 compresses the slope surface 19 of the reinforcing block 16, causing the reinforcing block 16 to experience an outward thrust. At this time, the four sets of reinforcing blocks 16 move outward synchronously along the guide groove 14. Furthermore, the four sets of reinforcing blocks 16, through the setting of the tangent edge 20, are inserted into the soil. The setting of the four sets of reinforcing blocks 16 and the spiral groove 7 on the outer wall of the reinforcing pile 6 increases the contact area between the reinforcing pile 6 and the soil, resulting in a better reinforcement effect. The workers first fill the water tank 26 with sufficient water through the water inlet 18, then close the water inlet 18. Next, the workers sequentially start the first motor 4 and the second motor 21. The operation of the first motor 4 causes the drill rod 5 to rotate, while the operation of the second motor 21 drives the rear gear 23 to rotate. The two sets of gears 23 mesh with each other, causing them to operate simultaneously. The rotation of the gears 23 drives the first lead screw 22 to rotate, which in turn drives the moving plate 3, which is threaded onto it, to move... The downward displacement causes the drill rod 5 to drill downwards. At the same time, the rotation of gear 23 also drives the second bevel gear 27 to rotate. The second bevel gear 27 and the first bevel gear 25 mesh with each other, causing the second lead screw 28 to rotate. The rotation of the second lead screw 28 drives the push plate 29, which is threadedly connected to it, to move. As the push plate 29 moves, the water inside the water tank 26 will be injected into the spray head 24 through the water pipe 31 to achieve water spraying and dust suppression. It is worth noting that when the push plate 29 moves to the baffle 30, the first motor 4 also moves to the bottom, at which point the water spraying operation stops.

[0039] By rotating the rotating plate 8, the reinforcing pile 6 is drilled into the soil to complete the initial reinforcement. Then, by rotating the rotating rod 9, the casing 11 is moved downward. The downward movement of the casing 11 will squeeze the reinforcing block 16 into the soil through the slope surface 19 of the reinforcing block 16 to complete the secondary reinforcement. Compared with the traditional device, this device can fix the base 1 with the reinforcing pile 6 and can also increase the contact area between the reinforcing pile 6 and the soil through four sets of reinforcing blocks 16, improve the friction, ensure the reinforcement effect, and avoid the displacement of the drill rod 5.

[0040] In some examples, a spray head 24 is fixedly installed on the top front side of the bracket 2, and a water tank 26 is fixedly installed on the top of the bracket 2.

[0041] The water tank 26 has a second lead screw 28 rotatably installed inside, and a push plate 29 is movably installed inside. The push plate 29 and the second lead screw 28 are threadedly connected. A water pipe 31 is fixedly installed on the top of the water tank 26. One end of the water pipe 31 is connected to the water tank 26, and the other end of the water pipe 31 is connected to the spray head 24.

[0042] For example, such as Figure 6 As shown, the workers first fill the water tank 26 with sufficient water through the water inlet 18, and then close the water inlet 18. Next, the workers sequentially start the first motor 4 and the second motor 21. The operation of the first motor 4 causes the drill rod 5 to rotate, while the operation of the second motor 21 drives the rear gear 23 to rotate. The two sets of gears 23 mesh with each other, causing them to operate simultaneously. The rotation of the gears 23 drives the first lead screw 22 to rotate. Furthermore, the first lead screw 22 causes the moving plate 3, which is threadedly connected to it, to move downwards, allowing the drill rod 5 to drill downwards. Simultaneously, the rotation of the gears 23 also drives the second bevel gear 27 to rotate. The second bevel gear 27 meshes with the first bevel gear 25, causing the second lead screw 28 to rotate. The rotation of the second lead screw 28 causes the push plate 29, which is threadedly connected to it, to move. As the push plate 29 moves, the water inside the water tank 26 is injected into the spray head 24 through the water pipe 31, achieving water spraying for dust suppression.

[0043] The rotation of gear 23, through the transmission of the first bevel gear 25 and the second bevel gear 27, causes the first lead screw 22 and the second lead screw 28 to rotate simultaneously. The rotation of the first lead screw 22 drives the drill rod 5 downward to drill, while the rotation of the second lead screw 28 causes the push plate 29 to shift inside the water tank 26, squeezing water into the water pipe 31 and spraying it out through the spray head 24. Compared with traditional devices, this device can simultaneously spray water through the spray head 24 to reduce dust while driving the drill rod 5 downward to drill, preventing workers from inhaling dust and ensuring a good working environment for drilling operations.

[0044] In some examples, the side of the reinforcing block 16 facing the inner side of the reinforcing pile 6 has a sloping surface 19, and the side of the reinforcing block 16 facing the outer side of the reinforcing pile 6 has a tangent edge 20.

[0045] The slope surface 19 is designed so that when the sleeve 11 moves downward, the reinforcing block 16 is squeezed outward, and the tangent edge 20 is set so that the reinforcing block 16 can be inserted into the soil when it is displaced outward.

[0046] In some examples, the reinforcing block 16, the guide block 17 and the inner wall of the guide groove 14 are elastically connected by a spring 15, and the sloped surface 19 of the reinforcing block 16 and the threaded rod 10 abut against each other.

[0047] For example, such as Figure 4As shown, by setting the spring 15, when the sleeve 11 is reset, the reinforcing block 16 will be reset by the elastic potential energy of the spring 15.

[0048] In some examples, two sets of baffles 30 are fixedly installed on the inner wall of the water tank 26. The baffles 30 are used to limit the push plate 29, and the push plate 29 and the inner wall of the water tank 26 are in close contact.

[0049] When the push plate 29 moves to the baffle 30, the first motor 4 also moves to the bottom, at which point the water spraying operation stops.

[0050] In some examples, a second motor 21 is fixedly mounted on the top of the bracket 2, and two sets of gears 23 are rotatably mounted on the front and rear sides of the top of the bracket 2, with the two sets of gears 23 meshing with each other.

[0051] In some examples, the output shaft of the second motor 21 is fixedly connected to the rear gear 23, and the bottom of the front gear 23 is fixedly mounted with a first lead screw 22, which is threadedly connected to the moving plate 3.

[0052] The rotation of gear 23 will drive the first lead screw 22 to rotate, and the first lead screw 22 will further drive the moving plate 3, which is threadedly connected to it, to move downward, so that the drill rod 5 drills downward.

[0053] In some examples, a first bevel gear 25 is rotatably mounted on the right side wall of the water tank 26, and one end of the first bevel gear 25 is fixedly connected to the second lead screw 28.

[0054] In some examples, a second bevel gear 27 is fixedly mounted on the top of the front gear 23, and the second bevel gear 27 meshes with the first bevel gear 25.

[0055] For example, such as Figure 6 As shown, the second bevel gear 27 and the first bevel gear 25 mesh with each other, causing the rotation of gear 23 to drive the first lead screw 22 and the second lead screw 28 to rotate simultaneously.

[0056] In some examples, the left side wall of the water tank 26 has a water inlet 18 for replenishing the water used for dust suppression.

[0057] Working principle and usage process of this utility model:

[0058] When drilling is required, the workers first move the base platform 1 to a suitable position, then rotate the two sets of rotating plates 8 clockwise. As the rotating plates 8 rotate, the reinforcing pile 6, which is threadedly connected to the base platform 1, will descend into the soil. After the rotating plates 8 have rotated to their maximum value, the workers stop rotating the rotating plates 8 and begin rotating the rotating rod 9 clockwise. At this time, because the rotating plates 8 have been rotated to their maximum value, the rotation of the rotating rod 9 will not interfere with the fixation of the reinforcing pile 6. Through the rotation of the rotating rod 9, the threaded rod 10 begins to rotate, and the threaded rod 1... The sleeve 11, which is threadedly connected to the pile 6, moves downward along the limiting groove 12. As the sleeve 11 moves downward, it presses against the slope surface 19 of the reinforcing block 16, causing the reinforcing block 16 to experience an outward thrust. At this time, the four sets of reinforcing blocks 16 move outward synchronously along the guide groove 14. Furthermore, the four sets of reinforcing blocks 16, through the setting of the tangent edge 20, are inserted into the soil. The setting of the four sets of reinforcing blocks 16 and the spiral groove 7 on the outer wall of the reinforcing pile 6 increases the contact area between the reinforcing pile 6 and the soil, resulting in a better reinforcement effect. Subsequent work... The operator first fills the water tank 26 with sufficient water through the water inlet 18, then closes the water inlet 18. Next, the operator sequentially starts the first motor 4 and the second motor 21. The operation of the first motor 4 causes the drill rod 5 to rotate, while the operation of the second motor 21 drives the rear gear 23 to rotate. The two sets of gears 23 mesh with each other, causing them to operate simultaneously. The rotation of the gears 23 drives the first lead screw 22 to rotate, which in turn drives the moving plate 3, which is threaded onto it, downwards. The displacement causes the drill rod 5 to drill downwards, and at the same time, the rotation of gear 23 also drives the second bevel gear 27 to rotate. The second bevel gear 27 and the first bevel gear 25 mesh with each other, causing the second lead screw 28 to rotate. The rotation of the second lead screw 28 drives the push plate 29, which is threadedly connected to it, to move. As the push plate 29 moves, the water inside the water tank 26 will be injected into the spray head 24 through the water pipe 31 to achieve water spraying and dust suppression. It is worth noting that when the push plate 29 moves to the baffle 30, the first motor 4 also moves to the bottom, at which point the water spraying operation stops.

[0059] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A geotechnical drilling apparatus comprising a base (1), characterised in that: A bracket (2) is fixedly installed on the top of the base (1), and a movable plate (3) is movably installed inside the bracket (2). A first motor (4) is fixedly installed on the top of the movable plate (3), and a drill rod (5) is rotatably installed on the bottom of the movable plate (3). The output shaft of the first motor (4) and the drill rod (5) are fixedly connected. The base (1) is threaded with reinforcing piles (6) on both the left and right sides. The outer wall of the reinforcing pile (6) is provided with a spiral groove (7). The top of the reinforcing pile (6) is fixedly installed with a rotating plate (8). The top of the rotating plate (8) is rotatably installed with a rotating rod (9). The inside of the reinforcing pile (6) is movably installed with a sleeve (11). The inside of the reinforcing pile (6) is provided with a limiting groove (12). The left and right sides of the sleeve (11) are fixedly installed with limiting blocks (13) movably installed inside the limiting groove (12). The bottom of the reinforcing pile (6) is provided with four sets of guide grooves (14). The inside of each of the four sets of guide grooves (14) is movably installed with a guide block (17). The top of each of the four sets of guide blocks (17) is fixedly installed with a reinforcing block (16). The four sets of reinforcing blocks (16) are circumferentially arranged on the outside of the threaded rod (10). One end of the reinforcing block (16) extends through to the outside of the reinforcing pile (6).

2. A geotechnical drilling apparatus as claimed in claim 1, wherein: A spray head (24) is fixedly installed on the top front side of the bracket (2), and a water tank (26) is fixedly installed on the top of the bracket (2). The water tank (26) is rotatably installed with a second lead screw (28) inside, and a push plate (29) is movably installed inside the water tank (26). The push plate (29) and the second lead screw (28) are threaded together. A water pipe (31) is fixedly installed on the top of the water tank (26). One end of the water pipe (31) is connected to the water tank (26), and the other end of the water pipe (31) is connected to the spray head (24).

3. The geotechnical drilling device according to claim 1, characterized in that: The reinforcing block (16) has a sloping surface (19) on the side facing the inner side of the reinforcing pile (6), and a tangent edge (20) on the side facing the outer side of the reinforcing pile (6).

4. The geotechnical drilling device according to claim 1, characterized in that: The reinforcing block (16), the guide block (17) and the inner wall of the guide groove (14) are elastically connected by a spring (15), and the slope surface (19) of the reinforcing block (16) and the threaded rod (10) abut against each other.

5. A geotechnical drilling device according to claim 2, characterized in that: The inner wall of the water tank (26) is fixedly equipped with two sets of baffles (30). The baffles (30) are used to limit the push plate (29). The push plate (29) and the inner wall of the water tank (26) are tightly fitted.

6. The geotechnical drilling device according to claim 1, characterized in that: A second motor (21) is fixedly installed on the top of the bracket (2), and two sets of gears (23) are rotatably installed on the front and rear sides of the top of the bracket (2), and the two sets of gears (23) mesh with each other.

7. A geotechnical drilling device according to claim 6, characterized in that: The output shaft of the second motor (21) is fixedly connected to the rear gear (23), and the bottom of the front gear (23) is fixedly installed with a first lead screw (22), which is threadedly connected to the moving plate (3).

8. A geotechnical drilling device according to claim 2, characterized in that: The right side wall of the water tank (26) is rotatably mounted with a first bevel gear (25), and one end of the first bevel gear (25) is fixedly connected to the second lead screw (28).

9. A geotechnical drilling device according to claim 6, characterized in that: A second bevel gear (27) is fixedly mounted on the top of the gear (23) on the front side, and the second bevel gear (27) and the first bevel gear (25) mesh with each other.

10. A geotechnical drilling device according to claim 2, characterized in that: The water tank (26) has a water inlet (18) on its left side wall for replenishing water for dust suppression.