A geological content sampling device for geological mapping

Abstract

The application discloses a geological content sampling device for geological surveying and mapping, and relates to the technical field of sampling devices.The device support is fixedly installed with a servo motor, the driving end of the servo motor is fixedly installed with an electric telescopic rod, the telescopic end of the electric telescopic rod is fixedly installed with a connecting piece, the connecting piece is fixedly installed with a drill rod, the lower end of the drill rod is fixedly installed with a limiting rod, the limiting rod is provided with limiting grooves which are evenly distributed in a ring shape, and the limiting grooves are slidably installed with sliding blocks.The device can automatically switch the sampling mode according to the change of the stratum resistance during the sampling process, so that the original layering and particle arrangement of the soil body can be maintained to the maximum extent, the problems of layer misplacement, mixed sampling and structure disturbance in the traditional sampling mode can be avoided, the accuracy of the sampling of the device and the representativeness of the sample can be improved, and the reliability of the subsequent sample detection data can be improved.

Description

Technical Field

[0001] This invention relates to the field of sampling device technology, and in particular to a geological content sampling device for geological mapping. Background Technology

[0002] Geological surveying is an important task for land and resources exploration, engineering geological investigation and geological environment monitoring. Only by accurately collecting original stratigraphic samples can the underground geological content and distribution characteristics be truly reflected. Therefore, relevant professional and technical personnel usually use existing geological surveying and mapping sampling devices to collect stratigraphic samples according to actual work needs, and conduct systematic research and analysis on the obtained samples. However, existing geological mapping sampling devices often employ fixed penetration or cutting methods to collect stratigraphic samples. This method is prone to incompatibility with the physical characteristics of different strata, resulting in poor sampling results. For example, when sampling soft soil or shallow loose layers, the sampling head or cutting edge of the device can easily cause in-situ invasive damage by directly squeezing or cutting the soil, destroying the in-situ structure of the soil and leading to sample distortion that fails to accurately reflect the original state of the strata. In hard soil, gravel, or permafrost strata, the device is prone to difficulty in effectively penetrating the strata due to its single static pressure / penetration mode, resulting in low sampling efficiency. Therefore, we propose a geological content sampling device for geological mapping to solve the above problems. Summary of the Invention

[0003] The purpose of this invention is to solve the problems mentioned in the background art by providing a geological content sampling device for geological mapping.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A geological content sampling device for geological mapping includes an equipment support, a servo motor fixedly mounted on the equipment support, an electric telescopic rod fixedly mounted on the drive end of the servo motor, a connector fixedly mounted on the telescopic end of the electric telescopic rod, and a drill rod fixedly mounted on the connector. A limiting rod is fixedly installed at the lower end of the drill rod. The limiting rod has a ring-shaped and evenly distributed limiting groove. A slider is slidably installed on each limiting groove. A guide head is fixedly installed between the sliders. The guide head is slidably and sealed on the inner wall of the drill rod. A drive mechanism is installed on the guide head. The drill rod has guide holes evenly distributed in a ring, and a sliding groove 1 evenly distributed in a ring, all of which are connected to the corresponding guide holes. Two sliding blocks are slidably installed on each sliding groove 1, and a cutting blade is fixedly installed between the two sliding blocks. An extrusion component is installed on the drill rod.

[0005] In the geological content sampling device for geological mapping described above, the driving mechanism includes a driving plate that is uniformly and annularly fixedly installed on the guide head. The driving plate is provided with guide holes. A controller is fixedly installed on the inner wall of the drill rod. A button is fixedly installed at the lower end of the controller. A reset component is installed on the drill rod.

[0006] In the geological content sampling device for geological mapping described above, the reset component includes a counterweight ring fixedly installed on the guide head, and two reset springs are fixedly installed between the guide head and the drill pipe.

[0007] In the geological content sampling device for geological mapping described above, the extrusion component includes multiple movable slots opened on the drill rod, and fastening plates are slidably installed between each pair of movable slots.

[0008] In the geological content sampling device for geological mapping described above, the drill rod is provided with a ring-shaped and uniformly distributed placement groove, and each placement groove is connected to two corresponding movable grooves, and the fastening plates are all sealed and slidably installed on the corresponding placement grooves.

[0009] In the geological content sampling device for geological mapping described above, the drill rod is provided with a sliding groove 2 that is evenly distributed in a ring, and the sliding groove 2 is connected to the corresponding placement groove and sliding groove 1. The fastening plate is fixedly installed with a plate body, and the plate body is slidably installed on the corresponding sliding groove 2.

[0010] In the geological content sampling device for geological mapping described above, a fixing plate is fixedly installed between each of the two corresponding sliding blocks, and a push plate that cooperates with the corresponding plate body is fixedly installed on each fixing plate.

[0011] In the geological content sampling device for geological mapping described above, a round rod is fixedly installed on each of the fixed plates.

[0012] Compared with existing technologies, the advantages of this invention are: 1. When sampling soft soil and shallow loose layers, the present invention ensures that multiple blades and fastening plates remain in an initial retracted state. During this stage, the soil, under its own pressure and the downward thrust of the drill rod and guide head, will rely entirely on its own stress and flow characteristics to enter the drill rod, completing the micro-disturbance sampling of the equipment. This method helps to preserve the original stratification and particle arrangement of the soil to the greatest extent, avoiding the problems of layer misalignment, sample mixing and structural disturbance commonly found in traditional sampling methods, thereby helping to improve the accuracy of subsequent sample testing data.

[0013] 2. When sampling hard soil, this invention uses a servo motor in conjunction with the drill rod to drive multiple blades to extend and rotate, cutting the hard soil and allowing it to smoothly enter the drill rod. This enables the device to smoothly sample hard soil. Simultaneously, the synchronous extension of multiple fastening plates physically separates the undisturbed soil within the borehole sampling area from debris, loose soil, and foreign matter that has detached from the borehole wall. This ensures the purity of the samples collected by the device and improves the accuracy and representativeness of the samples. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the geological content sampling device for geological mapping proposed in this invention; Figure 2 for Figure 1 A schematic diagram of the structure of the components on the servo motor; Figure 3 for Figure 2 A partial structural diagram after the cross-section of the drill pipe; Figure 4 for Figure 3 A schematic diagram of the structure of the guide head assembly; Figure 5 for Figure 2 Schematic diagram of the drill pipe structure; Figure 6 for Figure 2 Top view of the drill pipe after cross-section; Figure 7 for Figure 6 A schematic diagram of the structure of part A; Figure 8 for Figure 6 A three-dimensional structural diagram of the central fastening plate; Figure 9 for Figure 7 Exploded view of the connection assembly between the blade and the push plate; Figure 10 for Figure 7 A schematic diagram of the structure of a partial component on the blade.

[0015] In the diagram: 1. Equipment bracket; 2. Servo motor; 3. Electric telescopic rod; 4. Connector; 5. Drill rod; 6. Limiting rod; 7. Limiting groove; 8. Slider; 9. Guide head; 10. Counterweight ring; 11. Drive plate; 12. Guide hole; 13. Return spring; 14. Controller; 15. Button; 16. Guide hole; 17. Placement groove; 18. Moving groove; 19. Fastening plate; 20. Sliding groove one; 21. Sliding groove two; 22. Sliding block; 23. Blade; 24. Plate; 25. Fixing plate; 26. Push plate; 27. Round rod. Detailed Implementation

[0016] 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.

[0017] Reference Figures 1-10 A geological content sampling device for geological mapping includes an equipment support 1, a servo motor 2 fixedly mounted on the equipment support 1, an electric telescopic rod 3 fixedly mounted on the drive end of the servo motor 2, a connector 4 fixedly mounted on the telescopic end of the electric telescopic rod 3, and a drill rod 5 fixedly mounted on the connector 4.

[0018] The connector 4 and the drill rod 5 are connected in a detachable fixed manner. The upper end of the drill rod 5 is provided with a threaded groove, and the connector 4 is provided with a threaded opening that matches the upper end of the drill rod 5. When the drill rod 5 needs to be replaced, or when the equipment sampling is completed and the sample collected from the drill rod 5 needs to be collected, the nut at the upper end of the drill rod 5 can be unscrewed first, and then the drill rod 5 can be rotated to separate it from the connector 4, so that the drill rod 5 can be replaced or the sample collected from the inside of the drill rod 5 can be collected.

[0019] Reference Figures 2-7 A limit rod 6 is fixedly installed at the lower end of the drill rod 5. The limit rod 6 has a ring-shaped and evenly distributed limit groove 7. A slider 8 is slidably installed on each limit groove 7. A guide head 9 is fixedly installed between the sliders 8. The guide head 9 is sealed and slidably installed on the inner wall of the drill rod 5. A drive mechanism is installed on the guide head 9.

[0020] The drill rod 5 has guide holes 16 evenly distributed in a ring, and sliding grooves 20 evenly distributed in a ring. The sliding grooves 20 are all connected to the corresponding guide holes 16. Two sliding blocks 22 are slidably installed on each sliding groove 20. A blade 23 is fixedly installed between the two sliding blocks 22. An extrusion component is installed on the drill rod 5.

[0021] The drive mechanism includes a drive plate 11 that is uniformly fixed in a ring on the guide head 9. Each drive plate 11 has a guide hole 12. A controller 14 is fixedly installed on the inner wall of the drill rod 5. A button 15 is fixedly installed at the lower end of the controller 14. A reset component is installed on the drill rod 5.

[0022] The reset component includes a counterweight ring 10 fixedly installed on the guide head 9, and two reset springs 13 are fixedly installed between the guide head 9 and the drill rod 5.

[0023] When it is necessary to use this equipment to sample the soil, first fix the equipment bracket 1 directly above the soil to be sampled, then start the electric telescopic rod 3. At this time, the operation of the electric telescopic rod 3 will drive the drill rod 5 and the guide head 9 to move down through the connecting piece 4 (e.g., Figure 3 (As shown in the direction), when the guide head 9 moves down and contacts the soil, if the soil hardness (i.e., the upward resistance of the soil) is less than the sum of the weight of the guide head 9 and the counterweight ring 10 and the sum of the initial elastic forces of the two return springs 13, the guide head 9 and the drill rod 5 will remain relatively stationary, and the multiple blades 23 and the fastening plate 19 will also remain in a retracted state (in conjunction with...). Figure 6 It can be seen that, in the initial state, multiple blades 23 and multiple fastening plates 19 are retracted into the drill pipe 5.

[0024] When the soil resistance to the downward movement of the guide head 9 is small, the drill rod 5 drives the guide head 9 to continue moving downwards (along... Figure 5 As shown in the direction, the flat end face at the lower end of the guide head 9 will first apply vertical pressure to the shallow soil. Since the shear strength and bearing capacity of this soil layer are low, the soil layer will undergo vertical compression deformation under the action of vertical pressure. The pores between soil particles are compressed, and the particle arrangement gradually becomes tighter. This compression deformation will form a three-dimensional stress field inside the soil. In addition to the compressive stress in the vertical direction, this stress field will also generate significant lateral pressure in the horizontal direction (i.e., lateral stress inside the soil). As the drill rod 5 continues to move downward under force, and the guide hole 16 opened on the drill rod 5 gradually faces the compressed soil, the lateral pressure inside the compressed soil is much higher than the internal pressure of the drill rod 5. Therefore, a significant pressure difference will be formed between the two. Driven by the pressure difference, the plastic and fluid soil particles will slowly flow along the path of least resistance, i.e., towards the guide hole 16, and eventually enter the drill rod 5 through the guide hole 16 to achieve sampling. During this process, the thrust generated by the continuous downward movement of the guide head 9 will further push the soil towards the guide hole 16. Throughout the process, the multiple blades 23 and multiple fastening plates 19 remain in a retracted state without any cutting or forced penetration. The soil enters the drill rod 5 entirely by its own stress and flow characteristics, which helps to maintain the original stratification and particle arrangement of the soil to the greatest extent, avoiding problems such as layer misalignment and sample mixing in traditional sampling. This helps to improve the authenticity and representativeness of the samples collected by the equipment and improve the accuracy of subsequent test results.

[0025] Reference Figures 2-10 The extrusion component includes multiple movable slots 18 formed on the drill rod 5, and fastening plates 19 are slidably installed between each pair of movable slots 18.

[0026] The drill rod 5 has a ring-shaped, evenly distributed placement groove 17, and each placement groove 17 is connected to two corresponding moving grooves 18. The fastening plates 19 are all slidably and sealed on the corresponding placement grooves 17.

[0027] The drill rod 5 has a sliding groove 21 that is evenly distributed in a ring. The sliding groove 21 is connected to the corresponding placement groove 17 and sliding groove 20. The fastening plate 19 is fixedly installed with a plate body 24, and the plate body 24 is slidably installed on the corresponding sliding groove 21.

[0028] A fixing plate 25 is fixedly installed between each of the two corresponding sliding blocks 22. A push plate 26 that cooperates with the corresponding plate 24 is fixedly installed on each fixing plate 25. A round rod 27 is fixedly installed on each fixing plate 25.

[0029] If the guide head 9 is subjected to force and moves downward to contact the soil, or if the drill rod 5 drives the guide head 9 to continuously move downward to sample, and the soil hardness is high, the upward resistance it generates on the guide head 9 will be greater than the sum of the weight of the guide head 9 and the counterweight ring 10 and the sum of the initial elastic forces of the two return springs 13. In this case, the upward resistance of the soil will limit the further downward movement of the guide head 9 and its multiple drive plates 11. At this time, as the drill rod 5 drives the multiple blades 23 and the round rod 27 to continuously move downward (in conjunction with...), Figure 4 and Figure 10 (As shown in the direction), the guide hole 12 on the stationary drive plate 11 applies a moving guide force to the corresponding round rod 27, which will drive the round rod 27 to move the corresponding fixed plate 25, sliding block 22, and blade 23 outward (as shown in the direction). Figure 6 direction shown).

[0030] As drill rod 5 moves controller 14 and button 15 downwards (e.g.) Figure 3 (As shown in the direction) When the stationary counterweight ring 10 contacts the button 15 and presses it completely, the controller 14 will be triggered and started. The operation of the controller 14 will send a signal to the servo motor 2, thereby starting the servo motor 2. At this time, the servo motor 2 and the electric telescopic rod 3 work together to drive the drill rod 5 and its multiple blades 23 and fastening plate 19 to start rotating synchronously during the continuous downward movement.

[0031] When multiple blades 23 are forced outward, unfold, and begin to rotate, they continuously cut the hard soil in front. The cut soil, under the thrust of the rotating blades 23, enters the drill rod 5 through the guide hole 16, thus completing the sampling operation of the hard soil layer. Compared with traditional forced penetration sampling, this rotary cutting sampling method can significantly reduce the penetration resistance of hard soil layers, avoid problems such as soil fragmentation, layer displacement, and sample mixing caused by forced compression, and preserve the integrity and original bedding structure of the original soil to the greatest extent. This device effectively improves the accuracy and authenticity of sampling, enhancing the accuracy of subsequent sample testing results. Furthermore, it can adaptively switch sampling modes based on the magnitude of geological resistance. In soft soil layers, it employs micro-disturbance non-cutting sampling, while in hard soil layers, it automatically switches to rotary cutting sampling. This ensures that the original structure of the soil is not damaged during soft soil sampling, while achieving efficient sampling operations in hard soil layers. This significantly improves the device's adaptability to geological scenarios and overall sampling reliability, while also avoiding common problems in traditional sampling such as layer misalignment, sample mixing, and structural disturbance.

[0032] Simultaneously, when the round rod 27 is pushed by force to move the push plate 26 and the blade 23, the pushing force applied by the push plate 26 to the corresponding plate 24, and the moving guiding force generated by the two corresponding moving slots 18 on the corresponding fastening plates 19, will cause the multiple fastening plates 19 and the multiple blades 23 to unfold outward synchronously (e.g., Figure 6 direction shown).

[0033] When multiple fastening plates 19 move outward and unfold, the drill rod 5 is forced to move the multiple fastening plates 19 downward and rotate to collect samples. The multiple fastening plates 19 will adhere tightly to the borehole wall, forming a continuous and closed annular isolation barrier. This isolation structure can physically separate the undisturbed soil in the sampling area from the debris, loose soil and foreign matter that has fallen off the borehole wall. It spatially blocks the entry of borehole wall debris into the drill rod 5. This annular isolation design can not only effectively prevent borehole wall debris from mixing into the sample and ensure the purity of the collected sample, but also provide support and stability to the borehole wall, preventing the borehole wall from collapsing under cutting disturbance and blocking the sampling channel. At the same time, the stable isolation environment can be combined with the rotating cutting structure to preserve the original bedding and structural integrity of the undisturbed soil to the greatest extent, making the sampling results more consistent with the actual strata and greatly improving the reliability of subsequent sample testing results.

[0034] Furthermore, as the drill rod 5 and guide head 9 continue to move downwards for sampling, the soil hardness decreases. When the sum of the weight of the guide head 9 and counterweight ring 10, and the sum of the initial elastic force of the return spring 13, is much greater than the upward resistance of the soil, the guide head 9 and counterweight ring 10 will actively squeeze the soil downwards under their own weight and the elastic potential energy released by the two return springs 13, moving downwards relative to the drill rod 5 and releasing button 15 to stop the operation of controller 14 and servo motor 2. At the same time, during the process of the guide head 9 driving multiple drive plates 11 to move downwards relative to the drill rod 5 (in conjunction with...), Figure 3 and Figure 10 (As shown in the direction), the driving force applied to the corresponding round rod 27 by the guide hole 12 on the drive plate 11 will drive multiple blades 23 and multiple fastening plates 19 to move and reset through the cooperation of the round rod 27 with the corresponding fixed plate 25, push plate 26 and plate body 24, so that the equipment can automatically switch from the rotational cutting sampling mode of hard soil layer to the micro-disturbance non-cutting sampling mode of soft soil layer, so that the equipment can adaptively switch the sampling mode according to the change of stratum resistance.

[0035] To further clarify, the aforementioned fixed connection should be interpreted broadly unless otherwise explicitly specified and limited. For example, it may be welding, gluing, or integral molding, or other conventional methods well known to those skilled in the art.

[0036] In this invention, when sampling is required using this device, the device support 1 is first fixed directly above the soil to be sampled. Then, the electric telescopic rod 3 is activated. The operation of the electric telescopic rod 3 will drive the drill rod 5 and guide head 9 to move downward through the connector 4. When the guide head 9 moves downward and contacts the soil, if the upward resistance of the soil is less than the sum of the weight of the guide head 9 and the counterweight ring 10 and the sum of the initial elastic forces of the two return springs 13, the drill rod 5 will maintain the retracted state of its multiple blades 23 and multiple fastening plates 19 and continue to move downward to sample. During this stage, the soil can enter the interior of the drill rod 5 along the guide hole 16 by relying on its own stress and flow characteristics, thus completing the micro-disturbance sampling of the device. Throughout the process, the multiple blades 23 and multiple fastening plates 19 always remain in the retracted state without any cutting or forced penetration action, which helps to maintain the original stratification and particle arrangement of the soil to the greatest extent and avoids problems such as layer misalignment and sample mixing in traditional sampling, thereby helping to improve the accuracy of subsequent sample testing data.

[0037] If drill pipe 5 moves guide head 9 downward (e.g.) Figure 3When the upward resistance of the soil is greater than the sum of the weight of the guide head 9 and the counterweight ring 10 and the sum of the initial elastic forces of the two return springs 13 (as shown in the direction), the soil will restrict the guide head 9 and its multiple drive plates 11 from moving further downward. At this time, through the cooperation of the controller 14, the servo motor 2, the drive plate 11, and the round rod 27, the blade 23 will be driven to move and unfold, and rotate to cut the hard soil. The cut soil will enter the drill rod 5 through the guide hole 16 under the action of the rotating thrust of the blade 23, thereby completing the sampling operation of the hard soil layer. At the same time, the fastening plate 19 will also be driven to move and unfold, and rotate with the drill rod 5 to physically separate the original soil in the drilling sampling area from the debris, loose soil and foreign matter that have fallen off the borehole wall, ensuring the purity of the collected samples. This will help to further improve the sampling accuracy and representativeness of the samples, and improve the reliability of the subsequent sample test results.

[0038] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A geological content sampling device for geological mapping, comprising an equipment support (1), characterized in that, A servo motor (2) is fixedly installed on the equipment bracket (1). An electric telescopic rod (3) is fixedly installed on the drive end of the servo motor (2). A connector (4) is fixedly installed on the telescopic end of the electric telescopic rod (3). A drill rod (5) is fixedly installed on the connector (4). A limiting rod (6) is fixedly installed at the lower end of the drill rod (5). A limiting groove (7) with a ring-shaped and uniform distribution is provided on the limiting rod (6). A slider (8) is slidably installed on each of the limiting grooves (7). A guide head (9) is fixedly installed between the sliders (8). The guide head (9) is sealed and slidably installed on the inner wall of the drill rod (5). A driving mechanism is installed on the guide head (9). The drill rod (5) is provided with guide holes (16) evenly distributed in a ring. The drill rod (5) is provided with sliding grooves (20) evenly distributed in a ring. The sliding grooves (20) are all connected to the corresponding guide holes (16). Two sliding blocks (22) are slidably installed on each sliding groove (20). A blade (23) is fixedly installed between the two sliding blocks (22). An extrusion component is installed on the drill rod (5).

2. The geological content sampling device for geological mapping according to claim 1, characterized in that, The drive mechanism includes a drive plate (11) that is uniformly fixed in a ring on the guide head (9). The drive plate (11) is provided with guide holes (12). A controller (14) is fixedly installed on the inner wall of the drill rod (5). A button (15) is fixedly installed at the lower end of the controller (14). A reset component is installed on the drill rod (5).

3. A geological content sampling device for geological mapping according to claim 2, characterized in that, The reset component includes a counterweight ring (10) fixedly installed on the guide head (9), and two reset springs (13) are fixedly installed between the guide head (9) and the drill rod (5).

4. A geological content sampling device for geological mapping according to claim 1, characterized in that, The extrusion component includes multiple movable slots (18) formed on the drill rod (5), and fastening plates (19) are slidably installed between each pair of movable slots (18).

5. A geological content sampling device for geological mapping according to claim 4, characterized in that, The drill rod (5) has a ring-shaped uniformly distributed placement groove (17), and each placement groove (17) is connected to two corresponding moving grooves (18), and the fastening plate (19) is sealed and slidably installed on the corresponding placement groove (17).

6. A geological content sampling device for geological mapping according to claim 5, characterized in that, The drill rod (5) is provided with a sliding groove two (21) evenly distributed in a ring, and the sliding groove two (21) is connected to the corresponding placement groove (17) and sliding groove one (20). The fastening plate (19) is fixedly installed with a plate body (24), and the plate body (24) is slidably installed on the corresponding sliding groove two (21).

7. A geological content sampling device for geological mapping according to claim 6, characterized in that, A fixing plate (25) is fixedly installed between each of the two sliding blocks (22), and a push plate (26) that cooperates with the corresponding plate (24) is fixedly installed on each fixing plate (25).

8. A geological content sampling device for geological mapping according to claim 7, characterized in that, A round rod (27) is fixedly installed on each of the fixed plates (25).

Images