Drilling and sampling device for rock and soil exploration

Abstract

The invention discloses a drilling and sampling device for rock and soil exploration, and relates to the technical field of drilling and sampling for rock and soil exploration, the drilling and sampling device comprises a machine body, a plurality of connecting columns are fixedly connected to the inner side of the machine body, one end of each connecting column is fixedly connected with a mounting box, and a drilling hole is formed in the center of the upper surface of the mounting box; buffer springs are arranged on the edges of the two sides of the drilling hole correspondingly, and one side of each buffer spring is rotationally connected with an adjusting ring. According to the drilling and sampling device for rock and soil exploration, the position of a connector at the bottom of the main motor is changed, the main motor rotates in any direction, the main motor is started to drive a drilling pipe to drill downwards, in the drilling pipe rotating process, drilling threads continuously drive the drilling pipe to drill downwards, a lifting motor drives a moving frame and the main motor to continuously descend, and drilling is completed. The first handle is manually rotated, so that the main motor and the connector are kept connected, and the effect of flexibly changing the exploration direction when rock-soil exploration is carried out near the building is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of drilling and sampling for geotechnical exploration, and particularly to a drilling and sampling device for geotechnical exploration. Background Art

[0002] The drilling and sampling technology for geotechnical exploration plays an important role in engineering construction, environmental assessment and geological research. With the progress of science and technology, drilling and sampling equipment has gradually developed towards high efficiency and intelligence. Modern drilling technology adopts advanced drill bit materials and designs, improving the accuracy and efficiency of drilling. The introduction of non-destructive sampling and real-time monitoring technologies makes the acquisition of geotechnical samples more reliable and can better reflect the true situation of underground soil layers. The development of mobile drilling equipment also provides convenience for geotechnical exploration in complex terrains.

[0003] When general drilling and sampling equipment for geotechnical exploration drills near the foundation of a building, the foundation holes of the building may hinder the normal operation of the drilling equipment, resulting in frequent adjustment of the position during the drilling process. This not only increases the time required for drilling but also significantly reduces the construction efficiency. Frequent movement of the equipment may lead to poor contact between the drill bit and the formation, increasing the risk of drill bit damage and further driving up the costs of maintenance and replacement, failing to meet the actual requirements. Summary of the Invention

[0004] The present invention discloses a drilling and sampling device for geotechnical exploration, aiming to solve the technical problems that when general drilling and sampling equipment for geotechnical exploration drills near the foundation of a building, the foundation holes of the building may hinder the normal operation of the drilling equipment, resulting in frequent adjustment of the position during the drilling process, which not only increases the time required for drilling but also significantly reduces the construction efficiency, and frequent movement of the equipment may lead to poor contact between the drill bit and the formation, increasing the risk of drill bit damage.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A drilling and sampling device for geotechnical exploration, including a fuselage. A plurality of connecting blocks are fixedly connected to the inner side of the fuselage. One end of each connecting block is fixedly connected to an installation box. A drilling hole is provided at the center of the upper surface of the installation box. Buffer springs are respectively arranged on both side edges of the drilling hole. One side of each buffer spring is rotatably connected to an adjusting ring. A connecting column is fixedly connected to the inner side of the adjusting ring. One end of the connecting column is rotatably connected to a spherical shell. A buffer layer is arranged inside the spherical shell. A fixing seat is arranged inside the buffer layer. A rotating shell is rotatably connected to a corner of the installation box;

[0007] An adjusting mechanism is installed on the top of the rotating shell. A main motor is arranged inside the adjusting mechanism, and the adjusting mechanism is used to change the position of the main motor;

[0008] A sampling mechanism is arranged inside the fixed seat, and the sampling mechanism cooperates with the adjusting mechanism to drill underground rock and soil samples;

[0009] An interval mechanism is installed inside the installation box, and the interval mechanism is used to prevent water and soil from entering the inside of the installation box when drilling underground rock and soil samples;

[0010] Stabilizing mechanisms are installed around the fuselage, and the stabilizing mechanisms keep the adjusting mechanism and the sampling mechanism stable during operation.

[0011] The adjusting mechanism includes a lifting motor fixedly connected to the top of the rotating shell. One end of the output shaft of the lifting motor is fixedly connected to a vertical threaded rod. One end of the vertical threaded rod is threadedly connected to a lifting block. A guide rod is fixedly connected inside the rotating shell near the vertical threaded rod. The guide rod is slidably connected to the lifting block. The top of the lifting block is fixedly connected to a lifting shell. An insertion rod is fixedly connected inside the lifting shell. One end of the insertion rod is slidably connected to a moving frame. A transverse threaded rod is threadedly connected through one side of the moving frame.

[0012] One end of the transverse threaded rod is fixedly connected to a first handle. One end of the moving frame is fixedly connected to a mounting frame. One end of the mounting frame is rotatably connected to a rotating ring. The inner side of the rotating ring is rotatably connected to a fixed ring. The main motor and the fixed ring are fixedly connected. The top of the fixed ring is fixedly connected to a second handle. One end of the output shaft of the main motor is fixedly connected to a connecting head.

[0013] The sampling mechanism includes a common pipe arranged inside the fixed seat. A drilling pipe is arranged at the bottom end of the common pipe. Internal threads are respectively arranged at the tops of the common pipe and the drilling pipe. External threads are respectively arranged at the bottom of the connecting head and the bottom end of the common pipe. A drilling thread is arranged at the bottom end of the drilling pipe.

[0014] A plurality of cutting heads are welded to the bottom edge of the drilling pipe. The material of the cutting heads is high-strength alloy steel. Two connecting columns are respectively arranged on the outer walls on both sides of the common pipe and the drilling pipe. First recovery holes are arranged on the outer walls on both sides of the common pipe and the drilling pipe near the connecting columns. The external thread at the bottom of the connecting head is connected to the internal thread at the top of the common pipe.

[0015] The interval mechanism includes a retaining disc arranged on the inner surface of the installation box. A plurality of fixed seats are respectively arranged at the edge of the retaining disc. A buffer spring is inserted into the inside of each fixed seat. A through hole is arranged at the center of the retaining disc. One end of the drilling pipe passes through the through hole at the center of the retaining disc.

[0016] In a preferred solution, a rubber sleeve is provided at the edge of the through hole. The material of the rubber sleeve is rubber. The rubber sleeve can protect the outer wall of the drilling pipe and the ordinary pipe from being squeezed and damaged by the baffle.

[0017] An anti-skid plate is fixedly connected to the upper surface of the installation box, and a plurality of friction holes are arranged on the upper surface of the anti-skid plate. The friction holes can increase the friction between the sole and the surface of the anti-skid plate to prevent people from slipping on the anti-skid plate. An armrest is fixedly connected to the upper surface of the anti-skid plate to provide a fulcrum for people to prevent people from falling due to unstable center of gravity.

[0018] The stabilizing mechanism comprises a hydraulic cylinder fixedly connected to the four corners of the fuselage, a telescopic rod is slidably connected to the bottom of the hydraulic cylinder, and a supporting plate is fixedly connected to the bottom end of the telescopic rod.

[0019] The bottoms of both sides of the fuselage are rotatably connected with fixed frames respectively, the bottom of the fixed frame is fixedly connected with a rotating frame, and one side of the rotating frame is rotatably connected with a wheel.

[0020] From the above, it can be seen that the drilling sampling device for rock and soil exploration provided by the present invention has the following technical effects.

[0021] First: by changing the position of the bottom connector of the main motor, the rotating ring and the fixed ring can also rotate, and the rotating axes of the rotating ring and the fixed ring are perpendicular to each other, so that the main motor can rotate in any direction, the drilling pipe is first connected to the connector, and the main motor is started to drive the drilling pipe to drill downward. During the rotation of the drilling pipe, the drilling thread continuously drives the drilling pipe to drill downward, and the lifting motor drives the mobile frame and the main motor to continuously descend. By manually turning the first handle, the main motor and the connector are kept connected. When the drilling pipe is drilled to a certain depth, the connector is removed, and the ordinary pipe is connected to the top of the drilling pipe, which plays an effect of flexibly changing the exploration direction in geotechnical exploration near buildings.

[0022] Second: by pulling the fuselage to the position where drilling and sampling are required, the mounting frame and wheels at the bottom of the fixed frame play a role of steering and movement, which facilitates the transportation and movement of the fuselage. After the position of the fuselage is set, the hydraulic cylinder is started, and the hydraulic cylinder drives the telescopic rod to move downward, so that the support plate contacts the ground. It can adapt to various uneven grounds. Through four hydraulic cylinders and the support plate, the position of the fuselage is kept level and stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a front view structural schematic diagram of the present invention.

[0024] Figure 2 It is a rear view structural schematic diagram proposed by the present invention.

[0025] Figure 3 This is a schematic cross-sectional view of the structure of the present invention.

[0026] Figure 4 Schematic diagram of the partial sectional view proposed by the present invention.

[0027] Figure 5 Schematic diagram of the structure of the fixing ring proposed by the present invention.

[0028] Figure 6 Schematic diagram of the structure of the rubber sleeve proposed by the present invention.

[0029] Figure 7 Schematic diagram of the structure of the drilling pipe proposed by the present invention.

[0030] Figure 8 Schematic diagram of the structure of the spherical shell proposed by the present invention.

[0031] Figure 9 Schematic diagram of the structure of the cutting tool head proposed by the present invention.

[0032] In the figure: 1, fuselage; 2, support disc; 3, hydraulic cylinder; 4, anti-slip plate; 5, handrail; 6, rotating shell; 7, connecting block; 8, installation box; 9, drilling hole; 10, fixing frame; 11, wheel; 12, lifting motor; 13, main motor; 14, retaining disc; 15, guide rod; 16, first handle; 17, lifting shell; 18, horizontal threaded rod; 19, moving frame; 20, insertion rod; 21, lifting block; 22, vertical threaded rod; 23, mounting rack; 24, second handle; 25, fixing ring; 26, connecting head; 27, rotating ring; 28, ordinary pipe; 29, rubber sleeve; 30, drilling pipe; 31, first recovery hole; 32, second recovery hole; 33, fixing seat; 34, buffer spring; 35, connecting column; 36, adjusting ring; 37, buffer layer; 38, spherical shell; 39, cutting tool head; 40, drilling thread. Detailed implementation manners

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0034] A drilling and sampling device for geotechnical exploration disclosed by the present invention is mainly applied to the scenario where when a general drilling and sampling device for geotechnical exploration drills near the foundation of a building, the foundation hole of the building may hinder the normal operation of the drilling equipment, resulting in frequent adjustment of the position during the drilling process, which not only increases the time required for drilling, but also significantly reduces the construction efficiency. Frequent movement of the equipment may cause poor contact between the drill bit and the formation, thereby increasing the risk of drill bit damage.

[0035] Refer to Figure 1 — Figure 9, A borehole sampling device for geotechnical exploration, including a fuselage 1. Inside the fuselage 1, a plurality of connecting blocks 7 are fixedly connected. One end of the connecting block 7 is fixedly connected with an installation box 8. At the center of the upper surface of the installation box 8, a drilling hole 9 is provided. On both sides of the drilling hole 9, buffer springs 34 are respectively arranged. One side of the buffer spring 34 is rotatably connected with an adjusting ring 36. Inside the adjusting ring 36, a connecting column 35 is fixedly connected. One end of the connecting column 35 is rotatably connected with a spherical shell 38. Inside the spherical shell 38, a buffer layer 37 is provided. Inside the buffer layer 37, a fixing seat 33 is provided. One corner of the installation box 8 is rotatably connected with a rotating shell 6;

[0036] On the top of the rotating shell 6, an adjusting mechanism is installed. Inside the adjusting mechanism, a main motor 13 is provided. The adjusting mechanism is used to change the position of the main motor 13;

[0037] Inside the fixing seat 33, a sampling mechanism is provided. The sampling mechanism cooperates with the adjusting mechanism to drill underground geotechnical samples;

[0038] Inside the installation box 8, a spacing mechanism is installed. The spacing mechanism is used to prevent water and soil from entering the installation box 8 when drilling underground geotechnical samples;

[0039] Around the fuselage 1, a stabilizing mechanism is installed. The stabilizing mechanism keeps the adjusting mechanism and the sampling mechanism stable during operation.

[0040] The adjusting mechanism includes a lifting motor 12 fixedly connected to the top of the rotating shell 6. One end of the output shaft of the lifting motor 12 is fixedly connected with a vertical threaded rod 22. One end of the vertical threaded rod 22 is threadedly connected with a lifting block 21. Inside the rotating shell 6, near the position of the vertical threaded rod 22, a guide rod 15 is fixedly connected. The guide rod 15 is slidably connected with the lifting block 21. The top of the lifting block 21 is fixedly connected with a lifting shell 17. Inside the lifting shell 17, a plug rod 20 is fixedly connected. One end of the plug rod 20 is slidably connected with a moving frame 19. One side of the moving frame 19 is threadedly connected with a horizontal threaded rod 18 through it.

[0041] One end of the horizontal threaded rod 18 is fixedly connected with a first handle 16. One end of the moving frame 19 is fixedly connected with an installation frame 23. One end of the installation frame 23 is rotatably connected with a rotating ring 27. Inside the rotating ring 27, a fixed ring 25 is rotatably connected. The main motor 13 and the fixed ring 25 are fixedly connected. The top of the fixed ring 25 is fixedly connected with a second handle 24. One end of the output shaft of the main motor 13 is fixedly connected with a connecting head 26.

[0042] The sampling mechanism includes a common tube 28 arranged inside the fixing seat 33. At the bottom end of the common tube 28, a drilling tube 30 is provided. At the tops of the common tube 28 and the drilling tube 30, internal threads are respectively provided. At the bottom of the connecting head 26 and the bottom end of the common tube 28, external threads are respectively provided. At the bottom end of the drilling tube 30, a drilling thread 40 is provided.

[0043] A plurality of cutting tips 39 are welded to the bottom edge of the drill pipe 30. The material of the cutting tips 39 is high-strength alloy steel. Two connecting columns 35 are respectively arranged on the outer walls on both sides of the ordinary pipe 28 and the drill pipe 30. First recovery holes 31 are arranged at positions close to the connecting columns 35 on the outer walls on both sides of the ordinary pipe 28 and the drill pipe 30. The external thread at the bottom of the connector 26 is connected to the internal thread at the top of the ordinary pipe 28.

[0044] The spacing mechanism includes a retaining disc 14 arranged on the inner surface of the installation box 8. A plurality of fixing seats 33 are respectively arranged on the edge of the retaining disc 14. A buffer spring 34 is inserted into the fixing seat 33. A through hole is arranged at the center of the retaining disc 14. One end of the drill pipe 30 passes through the through hole at the center of the retaining disc 14.

[0045] A rubber sleeve 29 is arranged at the edge of the through hole. The material of the rubber sleeve 29 is rubber. The rubber sleeve 29 can prevent the outer walls of the protected drill pipe 30 and the ordinary pipe 28 from being damaged by extrusion of the retaining disc 14.

[0046] In this embodiment, since there are various steel bars in the foundation of the building, during the process of geotechnical sampling underground near the building, the steel bar structure in the building foundation will block the sampling, and the sampling direction needs to be adjusted. By rotating the spherical shell 38, the drill pipe 30 can be adjusted in different directions. Since both the adjusting ring 36 and the spherical shell 38 can rotate, and the rotation axes of the adjusting ring 36 and the spherical shell 38 are perpendicular to each other, to rotate the spherical shell 38 in any direction, the drill pipe 30 needs to be first connected to the connector 26. Since the position of the drill pipe 30 changes, the position of the main motor 13 needs to be adjusted to connect the drill pipe 30 to the connector 26. Start the lifting motor 12 to change the height of the main motor 13. By rotating the rotating shell 6 on the upper surface of the installation box 8 and rotating the first handle 16 to drive the transverse threaded rod 18 to linearly move the moving frame 19 and the main motor 13, the main motor 13 can reach any position above the space of the drill pipe 30. After reaching the appropriate position.

[0047] Furthermore, by changing the position of the connector 26 at the bottom of the main motor 13, the rotating ring 27 and the fixed ring 25 can both rotate, and the rotating axes of the rotating ring 27 and the fixed ring 25 are perpendicular to each other, so that the main motor 13 can rotate in any direction, and the drilling pipe 30 is first connected to the connector 26, and the main motor 13 is started to drive the drilling pipe 30 to drill downward. During the rotation of the drilling pipe 30, the drilling thread 40 continuously drives the drilling pipe 30 to drill downward, and the lifting motor 12 drives the movable frame 19 and the main motor 13 to continuously descend. By manually rotating the first handle 16, the main motor 13 and the connector 26 are kept connected. When the drilling pipe 30 is drilled to a certain depth, the connector 26 is removed, and the ordinary pipe 28 is connected to the top of the drilling pipe 30. Similarly, the connector 26 is connected to the top of the ordinary pipe 28, and the drilling process is repeated, which has the effect of flexibly changing the exploration direction in geotechnical exploration near buildings. There are multiple ordinary pipes 28, which can be connected end to end to increase the exploration depth.

[0048] What needs to be explained further is that the spherical shell 38 can maintain the direction stability of the ordinary pipe 28 and the drilling pipe 30. At the same time, the setting of the fixing seat 33 and the buffer layer 37 reduces the vibration of the ordinary pipe 28 and the drilling pipe 30. After the drilling is completed, the ordinary pipe 28 and the drilling pipe 30 are pulled out from the underground by using a steel cable to pass through the first recovery hole 31 and the second recovery hole 32.

[0049] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 In a preferred embodiment, the upper surface of the mounting box 8 is fixedly connected with an anti-skid plate 4, and the upper surface of the anti-skid plate 4 is provided with a plurality of friction holes, which can increase the friction between the sole and the surface of the anti-skid plate 4 to prevent people from slipping on the anti-skid plate 4, and the upper surface of the anti-skid plate 4 is fixedly connected with an armrest 5, which provides a fulcrum for people to prevent people from falling due to unstable center of gravity.

[0050] The stabilizing mechanism comprises a hydraulic cylinder 3 fixedly connected to the four corners of the fuselage 1, a telescopic rod is slidably connected to the bottom of the hydraulic cylinder 3, and a support plate 2 is fixedly connected to the bottom end of the telescopic rod.

[0051] The bottoms of both sides of the fuselage 1 are rotatably connected to fixed frames 10 , the bottom of the fixed frames 10 is fixedly connected to a rotating frame, and one side of the rotating frame is rotatably connected to a wheel 11 .

[0052] In this embodiment, the fuselage 1 is pulled to the position where drilling and sampling are required, and the mounting frame 23 and the wheels 11 at the bottom of the fixing frame 10 play the role of steering and movement, which facilitates the transportation and movement of the fuselage 1. The position of the fuselage 1 is set by starting the hydraulic cylinder 3, and the hydraulic cylinder 3 drives the telescopic rod to move downward, so that the support plate 2 contacts the ground, which can adapt to various uneven grounds. Through the four hydraulic cylinders 3 and the support plate 2, the position of the fuselage 1 is kept horizontal and stable.

[0053] Working principle: When in use, pull the fuselage 1 to the position where drilling and sampling are required. The mounting bracket 23 and the wheels 11 at the bottom of the fixing bracket 10 play a role in steering and movement, facilitating the transportation and movement of the fuselage 1. Set the position of the fuselage 1 and start the hydraulic cylinder 3. The hydraulic cylinder 3 drives the telescopic rod to move downward, making the support disc 2 contact the ground, which can adapt to various uneven ground surfaces. Through the four hydraulic cylinders 3 and the support disc 2, the position of the fuselage 1 is kept horizontal and stable. Since there are various steel bars in the foundation of the building, during the process of geotechnical sampling underground near the building, the steel bar structure in the building foundation will block the sampling, and the sampling direction needs to be adjusted. By rotating the spherical shell 38, the drilling pipe 30 can be adjusted in different directions. Since both the adjusting ring 36 and the spherical shell 38 can rotate, and the rotation axes of the adjusting ring 36 and the spherical shell 38 are perpendicular to each other, the spherical shell 38 can rotate in any direction. First, the drilling pipe 30 needs to be connected to the connecting head 26. Since the position of the drilling pipe 30 changes, the position of the main motor 13 needs to be adjusted to connect the drilling pipe 30 to the connecting head 26. Start the lifting motor 12 to change the height of the main motor 13. By rotating the rotating shell 6 on the upper surface of the installation box 8 and rotating the first handle 16 to drive the transverse threaded rod 18, the moving frame 19 and the main motor 13 move linearly, so that the main motor 13 can reach any position above the space of the drilling pipe 30. After reaching the appropriate position, by changing the position of the connecting head 26 at the bottom of the main motor 13, similarly, both the rotating ring 27 and the fixed ring 25 can rotate, and the rotation axes of the rotating ring 27 and the fixed ring 25 are perpendicular to each other, so that the main motor 13 can rotate in any direction. First, connect the drilling pipe 30 to the connecting head 26, start the main motor 13 to drive the drilling pipe 30 to drill downward. During the rotation of the drilling pipe 30, the drilling thread 40 continuously drives the drilling pipe 30 to drill downward, and the lifting motor 12 drives the moving frame 19 and the main motor 13 to continuously descend. By manually rotating the first handle 16, the main motor 13 and the connecting head 26 are kept connected. When the drilling pipe 30 drills to a certain depth, remove the connecting head 26 and connect the ordinary pipe 28 to the top end of the drilling pipe 30. Similarly, connect the connecting head 26 to the top end of the ordinary pipe 28 and repeat the drilling process, achieving the effect of flexibly changing the exploration direction during geotechnical exploration near the building. There are multiple ordinary pipes 28, which can be connected end to end to increase the exploration depth. The spherical shell 38 can keep the directions of the ordinary pipe 28 and the drilling pipe 30 stable. At the same time, the setting of the fixed seat 33 and the buffer layer 37 reduces the vibration of the ordinary pipe 28 and the drilling pipe 30. After drilling is completed, pass the steel cable through the first recovery hole 31 and the second recovery hole 32 to pull out the ordinary pipe 28 and the drilling pipe 30 from the ground.

[0054] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, shall be covered by the protection scope of the present invention.

Claims

1. A borehole sampling device for geotechnical exploration, comprising a fuselage (1), characterized in that, A plurality of connecting blocks (7) are fixedly connected to the inner side of the fuselage (1). One end of the connecting block (7) is fixedly connected to an installation box (8). A drilling hole (9) is arranged at the center of the upper surface of the installation box (8). Buffer springs (34) are respectively arranged on both side edges of the drilling hole (9). One side of the buffer spring (34) is rotatably connected to an adjusting ring (36). A connecting column (35) is fixedly connected to the inner side of the adjusting ring (36). One end of the connecting column (35) is rotatably connected to a spherical shell (38). A buffer layer (37) is arranged inside the spherical shell (38). A fixing seat (33) is arranged inside the buffer layer (37). One corner of the installation box (8) is rotatably connected to a rotating shell (6); An adjusting mechanism is installed on the top of the rotating shell (6). A main motor (13) is arranged inside the adjusting mechanism, and the adjusting mechanism is used to change the position of the main motor (13); A sampling mechanism is arranged inside the fixing seat (33), and the sampling mechanism cooperates with the adjusting mechanism to drill underground rock and soil samples; An interval mechanism is installed inside the installation box (8), and the interval mechanism is used to prevent water and soil from entering the inside of the installation box (8) when drilling underground rock and soil samples; Stabilizing mechanisms are installed around the fuselage (1), and the stabilizing mechanisms keep the adjusting mechanism and the sampling mechanism stable during operation.

2. The borehole sampling device for geotechnical exploration according to claim 1, characterized in that, The adjusting mechanism includes a lifting motor (12) fixedly connected to the top of the rotating shell (6). One end of the output shaft of the lifting motor (12) is fixedly connected to a vertical threaded rod (22). One end of the vertical threaded rod (22) is threadedly connected to a lifting block (21). A guide rod (15) is fixedly connected to the inside of the rotating shell (6) near the vertical threaded rod (22). The guide rod (15) is slidably connected to the lifting block (21). The top of the lifting block (21) is fixedly connected to a lifting shell (17). A plug rod (20) is fixedly connected to the inside of the lifting shell (17). One end of the plug rod (20) is slidably connected to a moving frame (19). A horizontal threaded rod (18) is threadedly connected through one side of the moving frame (19).

3. A borehole sampling device for geotechnical exploration according to claim 2, characterized in that, One end of the horizontal threaded rod (18) is fixedly connected to a first handle (16). One end of the moving frame (19) is fixedly connected to a mounting frame (23). One end of the mounting frame (23) is rotatably connected to a rotating ring (27). The inside of the rotating ring (27) is rotatably connected to a fixed ring (25). The main motor (13) and the fixed ring (25) are fixedly connected. A second handle (24) is fixedly connected to the top of the fixed ring (25). One end of the output shaft of the main motor (13) is fixedly connected to a connecting head (26).

4. A borehole sampling device for geotechnical exploration according to claim 3, characterized in that, The sampling mechanism includes a common pipe (28) arranged inside the fixing seat (33). A drilling pipe (30) is arranged at the bottom end of the common pipe (28). Internal threads are respectively arranged at the tops of the common pipe (28) and the drilling pipe (30). External threads are respectively arranged at the bottom of the connecting head (26) and the bottom end of the common pipe (28). A drilling thread (40) is arranged at the bottom end of the drilling pipe (30).

5. The borehole sampling device for geotechnical exploration according to claim 4, wherein, A plurality of cutting bits (39) are welded to the bottom edge of the drilling pipe (30), and the material of the cutting bits (39) is high-strength alloy steel. Two connecting columns (35) are respectively arranged on the outer walls of both sides of the common pipe (28) and the drilling pipe (30). A first recovery hole (31) is arranged on the outer walls of both sides of the common pipe (28) and the drilling pipe (30) near the connecting columns (35), and the external thread at the bottom of the connector (26) is connected to the internal thread at the top of the common pipe (28).

6. The borehole sampling device for geotechnical exploration according to claim 5, wherein, The spacing mechanism comprises a baffle (14) arranged on the inner surface of the installation box (8), a plurality of fixing seats (33) are respectively arranged on the edges of the baffle (14), a buffer spring (34) is inserted into the interior of the fixing seat (33), a through hole is arranged at the center of the baffle (14), and one end of the drilling pipe (30) passes through the through hole at the center of the baffle (14).

7. A borehole sampling device for geotechnical exploration according to claim 6, characterized in that, The edge of the through hole is provided with a rubber sleeve (29), the material of the rubber sleeve (29) is rubber, and the rubber sleeve (29) can protect the outer wall of the drilling pipe (30) and the common pipe (28) from being squeezed and damaged by the baffle (14).

8. The borehole sampling device for geotechnical exploration according to claim 7, wherein The upper surface of the installation box (8) is fixedly connected to an anti-skid plate (4), and the upper surface of the anti-skid plate (4) is provided with a plurality of friction holes, which can increase the friction between the sole and the surface of the anti-skid plate (4) to prevent people from slipping on the anti-skid plate (4). The upper surface of the anti-skid plate (4) is fixedly connected to an armrest (5), and the armrest (5) provides a point of support for people to prevent people from falling due to unstable center of gravity.

9. The borehole sampling device for geotechnical exploration according to claim 8, characterized in that, The stabilizing mechanism comprises a hydraulic cylinder (3) fixedly connected to the four corners of the fuselage (1); a telescopic rod is slidably connected to the bottom of the hydraulic cylinder (3); and a support plate (2) is fixedly connected to the bottom end of the telescopic rod.

10. A borehole sampling device for geotechnical exploration according to claim 9, characterized in that, The bottoms of both sides of the fuselage (1) are rotatably connected to fixed frames (10), the bottom of the fixed frame (10) is fixedly connected to a rotating frame, and one side of the rotating frame is rotatably connected to a wheel (11).

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