Geotechnical sampling drilling device for geotechnical engineering and sampling method thereof

Abstract

This invention relates to the field of soil and rock sampling technology, specifically to a soil and rock sampling drilling device and method for geotechnical engineering. The device includes a C-shaped support, with a telescopic cylinder fixedly connected to the top of the C-shaped support. The bottom end of the telescopic cylinder's telescopic rod passes through the bottom of the cross plate of the C-shaped support, and a C-shaped plate is fixedly connected to the bottom end of the telescopic cylinder's telescopic rod. When drilling is required, the C-shaped support is first moved to the target position, the drilling cone is aligned with the area to be drilled, and the telescopic cylinder is activated to push its telescopic rod downwards. The limiting groove constrains the moving plate, causing the C-shaped plate, two L-shaped plates, and the moving plate as a whole to move downwards. Simultaneously, a motor drives the drilling cone to rotate for drilling. The motor's rotating shaft drives two long frames to rotate, and the slider slides outwards under centrifugal force, pushing the moving rod and counterweight to unfold, effectively increasing the drilling cone's inertial torque, suppressing speed reduction, ensuring continuous high-speed drilling, and reducing the risk of jamming.

Description

Technical Field

[0001] This invention relates to the field of soil and rock sampling technology, specifically to a soil and rock sampling borehole device and sampling method for soil and rock engineering. Background Technology

[0002] The purpose of geotechnical investigation is to investigate, study, and analyze a construction site using testing methods and techniques, to study the geological conditions for constructing various engineering buildings and the impact of construction on the natural geological environment, to study measures to ensure the strength and stability of the foundation and prevent unacceptable deformation when the foundation, substructure, and superstructure work together, to propose the bearing capacity of the foundation, and to provide the engineering geological and geotechnical engineering data required for foundation design and construction, as well as foundation reinforcement when necessary. In order to reveal and delineate the stratum, identify and describe the properties and composition of the soil and rock, and ascertain the geological structure, it is usually necessary to drill holes in the soil and rock to take rock samples from the holes for analysis and experimentation.

[0003] When existing drilling equipment is used for drilling operations in rock and soil, the complex and variable structure of the rock and soil layers often includes complex geological areas such as hard rock masses, gravel interlayers, uneven cementation, or alternating layers of hard and soft materials. When the drilling cone acts on such complex sections, the contact area and interaction force between its cutting edge and the surrounding rock and soil mass increase significantly, which can easily generate great frictional resistance. This causes the drive motor to face additional rotational loads, which not only increases power consumption but also easily leads to insufficient output torque, fluctuations in speed, or even a sharp drop. In severe cases, it can even induce drill bit jamming, thereby reducing the stability and continuous operation capability of the equipment and resulting in low drilling efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a geotechnical engineering sampling drilling device and sampling method to solve the problem mentioned in the background art, where when the drilling cone operates in complex sections such as hard rock masses and gravel interlayers, the contact area and interaction force between its cutting edge and the surrounding soil and rock mass increase significantly, which easily generates great frictional resistance. This causes the drive motor to face additional rotational load, which not only increases power consumption but also easily leads to insufficient output torque, fluctuations in speed, or even a sharp drop. In severe cases, it can even induce drill bit jamming, thereby reducing the stability and continuous operation capability of the equipment and resulting in low drilling efficiency.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a geotechnical engineering soil and rock sampling drilling device, comprising a C-shaped support, a telescopic cylinder fixedly connected to the top of the C-shaped support, the bottom end of the telescopic cylinder's telescopic rod penetrating the bottom of the horizontal plate of the C-shaped support, a C-shaped plate fixedly connected to the bottom of the telescopic cylinder's telescopic rod, two L-shaped plates fixedly connected to the bottom of the two vertical plates of the C-shaped plate, a drilling mechanism for drilling soil and rock fixedly provided on the opposite side of the two horizontal plates of the two L-shaped plates, a limiting groove provided on the opposite side of the two vertical supports of the C-shaped support, a moving plate slidably connected inside the two limiting grooves, two cylinders fixedly connected to the bottom of the moving plate, and a sampling mechanism for collecting soil and rock slidably provided inside the two cylinders.

[0006] Preferably, the drilling mechanism includes a motor, which is fixedly connected to the opposite sides of the two horizontal plates of the two L-shaped plates. The bottom end of the motor's rotating shaft passes through the lower side of the moving plate and is fixedly connected to a drilling cone. The tops of the two vertical plates of the L-shaped plates are fixedly connected to the top of the moving plate. Two long frames are fixedly connected to the side of the motor's rotating shaft. A slider is slidably arranged inside the long frame. A moving rod is fixedly connected to the side of the slider. One end of the moving rod passes through the outer side of the long frame. The drilling cone is directly driven by the motor to rotate and drill holes. The transmission path is short, the energy loss is small, and the power utilization efficiency is improved. At the same time, the stable connection between the two L-shaped plates and the moving plate significantly enhances the overall rigidity and stability of the drilling mechanism during high-speed drilling, effectively suppressing vibration and sway during operation and extending the service life of the equipment.

[0007] Preferably, a first compression spring is fixedly sleeved on the side of the moving rod. One end of the first compression spring is fixedly connected to the side of the inner wall of the long frame, and the other end of the first compression spring is fixedly connected to the side of the slider. A hexagonal bolt is threaded to the end of the moving rod away from the slider. A washer is fixedly connected to the side of the hexagonal bolt. A counterweight is movably sleeved on the side of the moving rod. The first compression spring provides elastic restoring force to the slider, allowing it to quickly retract in a non-centrifugal state. The counterweight can move outward under centrifugal force, greatly increasing the rotational inertia of the drilling cone during rotation. This allows it to maintain a stable rotational speed even when encountering sudden changes in load from hard rock and soil, effectively preventing the risk of stuck drill bit. The combination of the hexagonal bolt and the washer facilitates the installation and replacement of the counterweight, improving maintenance convenience.

[0008] Preferably, the sampling mechanism includes a connecting rod slidably disposed inside the cylinder. A connecting plate is fixedly connected to the top of the connecting rod, and the side of the connecting plate slides in cooperation with the side of the cylinder. A second compression spring is fixedly connected to the top of the connecting plate, and the top of the second compression spring is fixedly connected to the upper side of the inner wall of the cylinder. A guide groove is provided on the side of the connecting rod, and a limit strip is fixedly connected to the side of the inner wall of the cylinder. One side of the limit strip is rounded and slides in cooperation with the inside of the guide groove. The second compression spring buffers the impact force when the storage tray touches the ground, protecting the mechanism from rigid collision damage. The precise sliding cooperation between the guide groove and the limit strip ensures that the connecting rod can only move and rotate along a preset trajectory inside the cylinder, thereby accurately controlling the sampling action of the storage tray and preventing sampling failure or sample mixing caused by skewness.

[0009] Preferably, a storage tray is fixedly connected to the bottom end of the connecting rod, a through groove is provided on the side of the connecting rod, a long plate is slidably connected to the bottom of the inner wall of the through groove, a third compression spring is fixedly connected to the top of the long plate, the top end of the third compression spring is fixedly connected to the upper side of the inner wall of the through groove, a long rod is fixedly connected to the bottom end of the long plate, the long rod passes through the bottom end of the connecting rod and extends to the lower side of the storage tray, the long rod can sense the ground contact signal, and realize power transmission by compressing the third compression spring through the long plate, triggering the subsequent sealing opening and rotation sampling action, realizing the automation of the sampling process, the third compression spring provides reliable reset force, ensuring that after sampling is completed, the sealing plate can drive the locking strip to seal the storage tray and the locking groove.

[0010] Preferably, a sealing plate is fixedly sleeved on the side of the long plate, and a locking strip is fixedly connected to the lower side of the sealing plate. The side of the storage tray is provided with a slot that cooperates with the locking strip. Through the tight fit between the locking strip and the slot, the storage tray can be effectively sealed after sampling, isolating it from external air and pollutants, preventing sample moisture evaporation, property changes or cross-contamination, ensuring the authenticity and integrity of the sample, and meeting the sample preservation requirements of high-standard geological exploration.

[0011] Preferably, the number of the card strips and the number of card slots are both several. Several card strips are fixedly connected to the lower side of the sealing plate in a ring at equal intervals, and several card slots are opened in a ring at equal intervals on the side of the storage tray. Multiple sets of ring-distributed card strips and card slots constitute a circumferentially uniformly distributed sealing system, which greatly enhances the reliability and consistency of the seal. At the same time, when the card slots and card strips are de-contacted, it is convenient for the soil and rock samples to move into the interior of the storage tray through multiple card slots.

[0012] A sampling method for a geotechnical engineering geospatial sampling borehole device includes the following steps:

[0013] S1. When drilling is required in soil and rock, first move the C-shaped support to the target position, align the drilling cone with the area to be drilled, and then activate the telescopic cylinder. Its telescopic rod pushes downward, and through the constraint of the limiting groove on the moving plate, the telescopic rod of the telescopic cylinder drives the C-shaped plate, the two L-shaped plates, and the moving plate to move downward as a whole. At the same time, the rotating shaft of the motor drives the drilling cone to rotate, and the drilling operation in the soil and rock begins. During the operation of the motor, the rotating shaft on its side drives the two long frames to rotate. The sliders in the long frames slide outward under the action of centrifugal force, thereby pushing the moving rod and the counterweight to unfold outward. By adding the counterweight, the inertial torque of the drilling cone during rotation is effectively increased, the speed drop caused by friction with soil and rock is suppressed, the continuous high-speed rotation of the drilling cone is ensured, the drilling efficiency is significantly improved, and the possibility of drill bit jamming is reduced.

[0014] S2. During the downward movement of the moving plate, the two cylinders connected to it move downward synchronously, pushing the connecting rod, the storage tray, and the sealing plate at the bottom to move downward. When the storage tray contacts the ground, it is pushed upward by the reaction force. The long rod drives the sealing plate to move upward through the long plate, compressing the third compression spring, causing the locking strip at the bottom of the sealing plate to disengage from the slot, releasing the sealing state, and causing the connecting rod to continue to be pressed upward, causing the guide groove on its side to slide upward along the limiting strip, driving the storage tray, the slot, and the sealing plate to rotate. The rotating slot causes the soil in the drilling process of the drilling cone to shake, collecting the soil generated during the drilling process into the inside of the storage tray, ensuring the integrity and accuracy of the soil during the sampling process, and avoiding sample mixing or omission.

[0015] S3. After the soil drilling and sampling are completed, the telescopic cylinder retracts its telescopic rod, causing the moving plate to move upward. At the same time, the drilling cone and the two cylinders move upward. When the cylinders rise, the collection tray detaches from the ground, so that the long rod is no longer under pressure. At this time, the third compression spring rebounds and pushes the long plate and sealing plate to reset, so that the locking strip is re-embedded into the slot and the sampled soil is sealed in the collection tray. This enables automatic sealing and collection of soil and rock sampling, making soil sampling operations more convenient and efficient, and ensuring the integrity of the sample and preventing contamination.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] In this invention, when drilling is required in soil and rock, the C-shaped support is first moved to the target position, the drilling cone is aligned with the area to be drilled, and the telescopic cylinder is activated to push its telescopic rod downwards. The limiting groove constrains the moving plate, causing the C-shaped plate, two L-shaped plates, and the moving plate as a whole to move downwards. Simultaneously, the motor drives the drilling cone to rotate for drilling. The motor's rotating shaft drives the two long frames to rotate, and the slider slides outwards under centrifugal force, pushing the moving rod and counterweight to unfold. This effectively increases the inertial torque of the drilling cone, suppresses the decrease in rotational speed, ensures continuous high-speed drilling, and reduces the risk of jamming.

[0018] In this invention, as the moving plate moves downward, the two cylinders move downward simultaneously, pushing the connecting rod, the collecting tray, and the sealing plate downward. After the collecting tray contacts the ground, it pushes the long rod upward, causing the sealing plate to compress the third spring, disengaging the locking strip from the slot and releasing the seal. The connecting rod continues to move upward, its guide groove sliding along the limiting strip, causing the collecting tray and the slot to rotate, collecting the soil generated by the drilling into the interior, ensuring complete and accurate sampling, and avoiding sample mixing.

[0019] In this invention, after soil drilling and sampling are completed, the telescopic rod of the telescopic cylinder retracts, causing the moving plate, drilling cone, and cylinder to move upwards. The collection tray detaches from the ground, the long rod is no longer under pressure, and the third compression spring rebounds, pushing the long plate and sealing plate back to their original positions, allowing the locking strip to re-embed into the slot, sealing the soil inside the collection tray. This achieves automatic sealing and collection during the sampling process, making the operation convenient and efficient, and ensuring the integrity and uncontaminated nature of the samples. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a partial three-dimensional structural diagram of the C-shaped bracket of the present invention;

[0022] Figure 3 This is a three-dimensional structural diagram of the punching mechanism of the present invention;

[0023] Figure 4 This is a partial three-dimensional structural unfolded view of the punching mechanism of the present invention;

[0024] Figure 5 This is a three-dimensional structural diagram of the elongated frame of the present invention;

[0025] Figure 6 This is a partial three-dimensional cross-sectional view of the elongated frame of the present invention;

[0026] Figure 7 This is a partial three-dimensional structural unfolded view of the long frame of the present invention;

[0027] Figure 8 This is a partial three-dimensional structural unfolded view of the sampling mechanism of the present invention;

[0028] Figure 9 This is a partial three-dimensional cross-sectional view of the sampling mechanism of the present invention;

[0029] Figure 10 This is a partial three-dimensional cross-sectional view of the cylinder of the present invention.

[0030] In the diagram: 1. C-shaped bracket; 2. Telescopic cylinder; 3. C-shaped plate; 4. L-shaped plate; 5. Drilling mechanism; 501. Motor; 502. Drilling cone; 503. Long frame; 504. Slider; 505. Moving rod; 506. First compression spring; 507. Counterweight; 508. Hex bolt; 509. Washer; 6. Limiting groove; 7. Moving plate; 8. Cylinder; 9. Sampling mechanism; 901. Connecting rod; 902. Connecting plate; 903. Second compression spring; 904. Guide groove; 905. Limiting strip; 906. Storage tray; 907. Through groove; 908. Long plate; 909. Third compression spring; 9010. Long rod; 9011. Sealing plate; 9012. Locking strip; 9013. Locking groove. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Please see Figures 1 to 10 This invention provides a technical solution: a geotechnical engineering geotechnical sampling and drilling device, comprising a C-shaped support 1, a telescopic cylinder 2 fixedly connected to the top of the C-shaped support 1, the bottom end of the telescopic rod of the telescopic cylinder 2 penetrating the bottom of the horizontal plate of the C-shaped support 1, a C-shaped plate 3 fixedly connected to the bottom of the two vertical plates of the C-shaped plate 3, two L-shaped plates 4 fixedly connected to the bottom of the two vertical plates of the two L-shaped plates 4, a drilling mechanism 5 for drilling geotechnical soil is fixedly provided on the opposite side of the two horizontal plates of the two L-shaped plates 4, a limiting groove 6 is provided on the opposite side of the two vertical plates of the C-shaped support 1, a moving plate 7 is slidably connected inside the two limiting grooves 6, two cylinders 8 are fixedly connected to the bottom of the moving plate 7, and a sampling mechanism 9 for collecting geotechnical soil is slidably provided inside the two cylinders 8.

[0033] Example 1

[0034] Please see Figures 1 to 10 This embodiment provides a technical solution:

[0035] The drilling mechanism 5 includes a motor 501, which is fixedly connected to the opposite side of the two horizontal plates of the two L-shaped plates 4 respectively. The bottom end of the rotating shaft of the motor 501 passes through the lower side of the moving plate 7 and is fixedly connected to a drilling cone 502. The tops of the two vertical plates of the L-shaped plates 4 are fixedly connected to the top of the moving plate 7. Two long frames 503 are fixedly connected to the side of the rotating shaft of the motor 501. A slider 504 is slidably arranged inside the long frame 503. A moving rod 505 is fixedly connected to the side of the slider 504. One end of the moving rod 505 passes through to the outside of the long frame 503.

[0036] A first compression spring 506 is fixedly sleeved on the side of the moving rod 505. One end of the first compression spring 506 is fixedly connected to the side of the inner wall of the long frame 503, and the other end of the first compression spring 506 is fixedly connected to the side of the slider 504. A hexagonal bolt 508 is threadedly connected to the end of the moving rod 505 away from the slider 504. A washer 509 is fixedly connected to the side of the hexagonal bolt 508. A counterweight 507 is movably sleeved on the side of the moving rod 505.

[0037] In this embodiment, the drilling cone 502 is directly driven by the motor 501 to perform rotary drilling. The transmission path is short, the energy loss is small, and the power utilization efficiency is improved. At the same time, the stable connection between the two L-shaped plates 4 and the moving plate 7 significantly enhances the overall rigidity and stability of the drilling mechanism 5 during high-speed drilling, effectively suppressing vibration and sway during operation and extending the service life of the equipment. The first compression spring 506 provides elastic restoring force to the slider 504, allowing the slider 504 to retract quickly in a non-centrifugal state. The counterweight 507 can move outward under the action of centrifugal force, which greatly increases the rotational inertia of the drilling cone 502 when it rotates, so that it can maintain a stable rotational speed when encountering sudden changes in hard rock and soil load, effectively preventing the risk of stuck drill. The combination of hexagonal bolts 508 and washers 509 facilitates the installation and replacement of the counterweight 507, improving the convenience of maintenance.

[0038] Example 2

[0039] Please see Figures 1 to 10 This embodiment provides a technical solution:

[0040] The sampling mechanism 9 includes a connecting rod 901, which is slidably disposed inside the cylinder 8. A connecting plate 902 is fixedly connected to the top of the connecting rod 901. The side of the connecting plate 902 is slidably engaged with the side of the cylinder 8. A second compression spring 903 is fixedly connected to the top of the connecting plate 902. The top of the second compression spring 903 is fixedly connected to the upper side of the inner wall of the cylinder 8. A guide groove 904 is provided on the side of the connecting rod 901. A limit strip 905 is fixedly connected to the side of the inner wall of the cylinder 8. One side of the limit strip 905 is rounded and slidably engaged with the inside of the guide groove 904.

[0041] A storage tray 906 is fixedly connected to the bottom end of the connecting rod 901. A through groove 907 is opened on the side of the connecting rod 901. A long plate 908 is slidably connected to the bottom of the inner wall of the through groove 907. A third compression spring 909 is fixedly connected to the top of the long plate 908. The top of the third compression spring 909 is fixedly connected to the upper side of the inner wall of the through groove 907. A long rod 9010 is fixedly connected to the bottom end of the long plate 908. The long rod 9010 passes through the bottom end of the connecting rod 901 and extends to the lower side of the storage tray 906.

[0042] In this embodiment, the second compression spring 903 buffers the impact force when the storage tray 906 touches the ground, protecting the mechanism from rigid collision damage. The precise sliding fit between the guide groove 904 and the limiting strip 905 ensures that the connecting rod 901 can only move and rotate along a preset trajectory within the cylinder 8, thereby accurately controlling the sampling action of the storage tray 906 and preventing sampling failure or sample mixing due to skewness. The long rod 9010 can sense the ground contact signal and transmit power by compressing the third compression spring 909 through the long plate 908, triggering the subsequent sealing opening and rotation sampling action, realizing the automation of the sampling process. The third compression spring 909 provides a reliable restoring force, ensuring that after sampling, the sealing plate 9011 can drive the locking strip 9012 to seal the storage tray 906 and the locking groove 9013.

[0043] Example 3

[0044] Please see Figures 1 to 10 This embodiment provides a technical solution:

[0045] A sealing plate 9011 is fixedly sleeved on the side of the long plate 908, and a locking strip 9012 is fixedly connected to the lower side of the sealing plate 9011. A slot 9013 that mates with the locking strip 9012 is opened on the side of the storage tray 906.

[0046] The number of card strips 9012 and the number of card slots 9013 are both several. Several card strips 9012 are fixedly connected to the lower side of the sealing plate 9011 in a ring at equal intervals, and several card slots 9013 are opened in a ring at equal intervals on the side of the storage tray 906.

[0047] In this embodiment, the tight fit between the clip 9012 and the slot 9013 effectively seals the storage tray 906 after sampling, isolating it from external air and contaminants, preventing sample moisture evaporation, property changes, or cross-contamination, ensuring the authenticity and integrity of the sample, and meeting the sample preservation requirements of high-standard geological exploration. Furthermore, the multiple sets of annularly distributed clips 9012 and slots 9013 form a circumferentially uniformly distributed sealing system, greatly enhancing the reliability and consistency of the seal. At the same time, when the slots 9013 and clips 9012 are released from contact, it is convenient for the soil and rock sample to move into the interior of the storage tray 906 through multiple slots 9013.

[0048] A sampling method for a geotechnical engineering geospatial sampling borehole device includes the following steps:

[0049] S1. When drilling is required in the soil and rock, first move the C-shaped support 1 to the target position, align the drilling cone 502 with the area to be drilled, and then start the telescopic cylinder 2. Its telescopic rod pushes downward. Through the constraint of the limiting groove 6 on the moving plate 7, the telescopic rod of the telescopic cylinder 2 drives the C-shaped plate 3, the two L-shaped plates 4 and the moving plate 7 to move downward as a whole. At the same time, the rotating shaft of the motor 501 drives the drilling cone 502 to rotate and start drilling in the soil and rock. During the operation of the motor 501, the rotating shaft on its side drives the two long frames 503 to rotate. The slider 504 in the long frame 503 slides outward under the action of centrifugal force, thereby pushing the moving rod 505 and the counterweight 507 to unfold outward. By adding the counterweight 507, the inertial torque of the drilling cone 502 during rotation is effectively increased, the speed drop caused by friction with the soil and rock is suppressed, the continuous high-speed rotation of the drilling cone 502 is ensured, the drilling efficiency is significantly improved and the possibility of drill jamming is reduced.

[0050] S2. During the downward movement of the movable plate 7, the two connected cylinders 8 move downward simultaneously, pushing the bottom connecting rod 901, the storage tray 906, and the sealing plate 9011 downward. When the storage tray 906 contacts the ground, it is subjected to a reaction force that pushes the long rod 9010 upward. The long rod 9010 drives the sealing plate 9011 upward through the long plate 908, compressing the third compression spring 909, causing the retaining strip 9012 at the bottom of the sealing plate 9011 to disengage from the retaining groove 9013, thus releasing the seal. The connecting rod 901 is continuously pressed upward, causing the guide groove 904 on its side to slide upward along the limiting strip 905, which drives the storage tray 906, the slot 9013 and the sealing plate 9011 to rotate. The rotating slot 9013 causes the soil generated during the drilling process of the drilling cone 502 to shake, and collects the soil generated during the drilling process of the drilling cone 502 into the inside of the storage tray 906, ensuring the integrity and accuracy of the soil during the sampling process and avoiding sample mixing or omission.

[0051] S3. After the soil drilling and sampling are completed, the telescopic rod of the telescopic cylinder 2 retracts, driving the moving plate 7 to move upward. At the same time, the drilling cone 502 and the two cylinders 8 move upward. When the cylinders 8 rise, the storage tray 906 is lifted off the ground, so that the long rod 9010 is no longer under pressure. At this time, the third compression spring 909 rebounds and pushes the long plate 908 and the sealing plate 9011 to reset, so that the locking strip 9012 is re-embedded into the slot 9013 and the sampled soil is sealed in the storage tray 906. This enables automatic sealing and storage of the soil and rock sampling process, making the soil sampling operation more convenient and efficient, and ensuring the integrity of the sample and preventing contamination.

[0052] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A geotechnical sampling drilling device for geotechnical engineering, comprising a C-shaped support (1), a telescopic cylinder (2) is fixedly connected to the top of the C-shaped support (1), and the bottom end of the telescopic rod of the telescopic cylinder (2) penetrates through the bottom of the horizontal plate of the C-shaped support (1), characterized in that: The telescopic cylinder (2) has a C-shaped plate (3) fixedly connected to the bottom of its telescopic rod. The bottom of the two vertical plates of the C-shaped plate (3) is fixedly connected to two L-shaped plates (4). The two horizontal plates of the two L-shaped plates (4) are fixedly provided with a drilling mechanism (5) for drilling the soil and rock on one side opposite to each other. The two vertical frames of the C-shaped bracket (1) are provided with limit grooves (6) on one side opposite to each other. The two limit grooves (6) are slidably connected to a moving plate (7). The bottom of the moving plate (7) is fixedly connected to two cylinders (8). The two cylinders (8) are slidably provided with a sampling mechanism (9) for collecting the soil and rock inside each other. The sampling mechanism (9) includes a connecting rod (901), which is slidably disposed inside the cylinder (8). A connecting plate (902) is fixedly connected to the top of the connecting rod (901). The side of the connecting plate (902) is slidably engaged with the side of the cylinder (8). A second compression spring (903) is fixedly connected to the top of the connecting plate (902). The top of the second compression spring (903) is fixedly connected to the upper side of the inner wall of the cylinder (8). A guide groove (904) is provided on the side of the connecting rod (901). A limit strip (905) is fixedly connected to the side of the inner wall of the cylinder (8). One side of the limit strip (905) is rounded and slidably engaged with the inside of the guide groove (904). The bottom end of the connecting rod (901) is fixedly connected to a storage tray (906). A through groove (907) is provided on the side of the connecting rod (901). A long plate (908) is slidably connected to the bottom of the inner wall of the through groove (907). A third compression spring (909) is fixedly connected to the top of the long plate (908). The top end of the third compression spring (909) is fixedly connected to the upper side of the inner wall of the through groove (907). A long rod (9010) is fixedly connected to the bottom end of the long plate (908). The long rod (9010) passes through the bottom end of the connecting rod (901) and extends to the lower side of the storage tray (906). A sealing plate (9011) is fixedly sleeved on the side of the long plate (908), and a locking strip (9012) is fixedly connected to the lower side of the sealing plate (9011). A slot (9013) that cooperates with the locking strip (9012) is opened on the side of the storage tray (906). The number of card strips (9012) and the number of card slots (9013) are both several. Several card strips (9012) are fixedly connected to the lower side of the sealing plate (9011) in a ring at equal distances, and several card slots (9013) are opened in a ring at equal distances on the side of the storage tray (906).

2. The geotechnical engineering soil and rock sampling borehole device according to claim 1, characterized in that: The drilling mechanism (5) includes a motor (501), which is fixedly connected to the opposite side of the two horizontal plates of the two L-shaped plates (4). The bottom end of the rotating shaft of the motor (501) passes through the lower side of the moving plate (7) and is fixedly connected to a drilling cone (502). The tops of the two vertical plates of the L-shaped plate (4) are fixedly connected to the top of the moving plate (7). Two long frames (503) are fixedly connected to the side of the rotating shaft of the motor (501). A slider (504) is slidably arranged inside the long frame (503). A moving rod (505) is fixedly connected to the side of the slider (504). One end of the moving rod (505) passes through to the outside of the long frame (503).

3. A geotechnical engineering soil and rock sampling borehole device according to claim 2, characterized in that: A first compression spring (506) is fixedly sleeved on the side of the moving rod (505). One end of the first compression spring (506) is fixedly connected to the side of the inner wall of the long frame (503), and the other end of the first compression spring (506) is fixedly connected to the side of the slider (504). A hexagonal bolt (508) is threadedly connected to the end of the moving rod (505) away from the slider (504). A washer (509) is fixedly connected to the side of the hexagonal bolt (508), and a counterweight (507) is movably sleeved on the side of the moving rod (505).

4. A sampling method for a geotechnical engineering geospatial sampling borehole device, using the geotechnical engineering geospatial sampling borehole device as described in claim 3, characterized in that, Includes the following steps: S1. When drilling is required in the soil and rock, first move the C-shaped support (1) to the target position, align the drilling cone (502) with the area to be drilled, and then start the telescopic cylinder (2). Its telescopic rod pushes downward, and through the constraint of the limiting groove (6) on the moving plate (7), the telescopic rod of the telescopic cylinder (2) drives the C-shaped plate (3), the two L-shaped plates (4) and the moving plate (7) to move downward as a whole. At the same time, the rotating shaft of the motor (501) drives the drilling cone (502) to rotate, and the drilling operation in the soil and rock begins. During operation, the rotating shaft on its side simultaneously drives the two long frames (503) to rotate. The slider (504) inside the long frame (503) slides outward under the action of centrifugal force, thereby pushing the moving rod (505) and the counterweight (507) to unfold outward. By adding the counterweight (507), the inertial torque of the drilling cone (502) during rotation is effectively increased, the speed drop caused by friction with the rock and soil is suppressed, the continuous high-speed rotation of the drilling cone (502) is ensured, the drilling efficiency is significantly improved, and the possibility of drill bit jamming is reduced. S2. During the downward movement of the moving plate (7), the two cylinders (8) connected to it move downward simultaneously, pushing the bottom connecting rod (901), the storage tray (906), and the sealing plate (9011) downward. When the storage tray (906) contacts the ground, it is subjected to a reaction force that pushes the long rod (9010) upward. The long rod (9010) drives the sealing plate (9011) upward through the long plate (908), compressing the third compression spring (909), causing the retaining strip (9012) at the bottom of the sealing plate (9011) to disengage from the retaining groove (9013), thus releasing the seal. In addition to the sealed state, the connecting rod (901) is continuously pressed upward, causing the guide groove (904) on its side to slide upward along the limiting strip (905), which drives the storage tray (906), the slot (9013) and the sealing plate (9011) to rotate. The rotating slot (9013) causes the soil in the drilling process of the drilling cone (502) to shake, and the soil generated during the drilling process of the drilling cone (502) is collected into the inside of the storage tray (906), ensuring the integrity and accuracy of the soil during the sampling process and avoiding sample mixing or omission. S3. After the soil drilling and sampling is completed, the telescopic rod of the telescopic cylinder (2) is retracted, which drives the moving plate (7) to move upward. At the same time, the drilling cone (502) and the two cylinders (8) move upward. When the cylinder (8) rises, the storage tray (906) is lifted off the ground, so that the long rod (9010) is no longer under pressure. At this time, the third compression spring (909) rebounds and pushes the long plate (908) and the sealing plate (9011) to reset, so that the card strip (9012) is re-embedded into the inside of the card slot (9013) and the sampled soil is sealed in the storage tray (906). Thus, the soil sampling process can be automatically sealed and stored, making the soil sampling operation more convenient and efficient, and ensuring the integrity of the sample and preventing contamination.

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