A soil sampler for geological exploration and a method of using the same

Abstract

The application relates to the technical field of soil samplers, and particularly discloses a soil sampler for geological survey and a use method thereof, which comprises a spline rod, a connecting column I fixedly connected to the spline rod, a supporting plate I fixedly connected to the lower end of the connecting column I, symmetrically-distributed connecting blocks slidingly connected to the supporting plate I, and semicylindrical shells fixedly connected to the connecting blocks on the two sides; a sliding sleeve slidingly connected to the connecting column I, a hinge piece I hingedly connected between the sliding sleeve and the semicylindrical shells, two supports fixedly connected to the supporting plate I, a connecting column II slidingly connected to the supports, and the connecting column II fixedly connected to the sliding sleeve. The two semicylindrical shells can be reversibly separated, after sampling is completed, only the handle needs to be downwardly rotated to separate the two semicylindrical shells from each other, the soil sample is separated from the cylinder wall, disturbance and structural damage of the soil sample caused by forcibly pushing or knocking the traditional integral cylinder out of the mold are avoided, and the undisturbed nature of the soil sample and the reliability of the test data are improved.

Description

Technical Field

[0001] This invention relates to the field of soil sampling technology, and more specifically, to a soil sampling tool for geological exploration and its method of use. Background Technology

[0002] In geological exploration, geotechnical engineering, and environmental soil monitoring, soil samplers are crucial tools for obtaining undisturbed soil samples. The design of the soil sampler directly affects the representativeness of the soil sample and the accuracy of subsequent test data. Currently, common soil samplers mainly include open-type, piston-type, and rotary-type soil samplers. However, existing soil samplers still have the following shortcomings in practical use: Most soil samplers employ a monolithic cylindrical or split-cylinder structure. For monolithic cylinders, after sampling, the contact area between the soil sample and the cylinder wall is large, resulting in strong frictional resistance. Furthermore, the soil sample is tightly adhered within the cylinder, often requiring external force to forcefully push or knock it out. During this process, the friction between the cylinder wall and the soil sample increases the axial tensile stress and shear deformation of the soil sample, easily causing disturbance, compression, or even damage to the internal layering structure. This alters the original state information of the soil sample, such as density, water content, and mechanical parameters, making it difficult to obtain a truly undisturbed soil sample. This disturbance is particularly pronounced in sensitive media such as cohesive or soft soils, significantly reducing the sampling success rate.

[0003] In view of this, a soil sampler for geological exploration and its usage method are proposed. Summary of the Invention

[0004] In view of the problems existing in the prior art, the present invention provides a soil sampler for geological exploration and its usage method to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a soil sampler for geological exploration, comprising: a spline rod, a connecting column fixedly connected to the spline rod, a support plate fixedly connected to the lower end of the connecting column, a symmetrically distributed connecting block slidably connected to the support plate, and semi-cylindrical shells fixedly connected to the connecting blocks on both sides respectively. A sliding sleeve is slidably connected to the first connecting column. A hinge is hinged between the sliding sleeve and the semi-cylindrical shell. Two supports are fixedly connected to the first support plate. The supports are slidably connected to the second connecting column, which is fixedly connected to the sliding sleeve. There are two rotating handles, each rotatably connected to the bracket, and a connecting member is hinged between the rotating handle and the second connecting column.

[0006] Furthermore, the first support plate is fixedly connected to two second support plates, and the second support plate is fixedly connected to a guide rod. Both guide rods are perpendicular to the first support plate. The guide rods are slidably connected to a sliding plate, and the sliding plate is fixedly connected to two limiting shells. Both semi-cylindrical shells are fixedly connected to a locking block.

[0007] Furthermore, both sliding plates are jointly fixed with an annular blade, which is located below the semi-cylindrical shell.

[0008] Furthermore, the sliding plate is fixedly connected to two fixed posts, which penetrate the support plate and are slidably connected. Each fixed post is fitted with a spring, and the two ends of the spring are fixedly connected to the support plate and the sliding plate, respectively.

[0009] Furthermore, the spline rod is fixedly connected to a vertical rod, the vertical rod is slidably connected to an impact grip, and the upper end of the vertical rod limits the impact grip.

[0010] Furthermore, the spline rod is splined to a spline sleeve, the connecting post pair limits the spline sleeve, the spline sleeve is fixedly connected to a circumferentially spaced support frame, the support frame is rotatably connected to two friction wheels, a gear is fixedly connected between the two friction wheels, and the support frame is slidably connected to a toothed post, the toothed post meshing with the gear.

[0011] Furthermore, the support frame is fixedly connected to two fixed shafts, and the fixed shafts are rotatably connected to two lever-type pawls. The lever-type pawls abut against adjacent friction wheels, and two springs are fixedly connected between the upper and lower adjacent lever-type pawls.

[0012] Furthermore, the support frame is slidably connected to a sliding column, the sliding column is fixedly connected to a connecting rod, the connecting rod is hinged to the lever-type pawl on the same side by a second hinge, and the sliding column is fixedly connected to a fixing column.

[0013] Furthermore, the spline sleeve is rotatably connected to a turntable, the turntable having circumferentially spaced inclined through slots, the second fixed post sliding within the inclined through slots of the turntable, the turntable being fixedly connected to multiple second guide rods, the multiple second guide rods being slidably connected to a connecting ring, the connecting ring being fixedly connected to a circumferentially spaced limiting frame, the toothed post being fixedly connected to a fixing plate, the fixing plate limiting the limiting frame.

[0014] Furthermore, a method for using a soil sampler for geological exploration is described, with the specific steps as follows: Step 1: Push the rotating handle upward to drive the sliding sleeve to move upward, so that the two semi-cylindrical shells on both sides slide towards each other and combine to form a circular soil-collecting shell; at the same time, the ring blade moves upward relative to the ground after touching the ground, driving the limiting shell to lock the locking block; Step 2: On the slope, rotate the connecting ring to release the friction wheel with the lever-type pawl. The toothed column automatically falls to contact the slope surface. Then, the lever-type pawl resets to achieve stepless bidirectional locking, keeping the semi-cylindrical shell basically vertical. Then, the impact handle reciprocates along the upright to impact the spline rod, causing the ring cutter and the semi-cylindrical shell to penetrate the soil vertically to complete the soil extraction. Step 3: After the semi-cylindrical shell is removed from the soil, the compressed spring pushes the annular blade and the sliding plate downwards to reset, the limiting shell disengages from the locking block, and the locking of the lower part of the semi-cylindrical shell is released; Step 4: Pull the rotating handle downwards to drive the sliding sleeve to move down, causing the two semi-cylindrical shells to slide and separate in opposite directions, thereby removing the soil sample inside without disturbance.

[0015] Compared with the prior art, the present invention provides a soil sampler for geological exploration and its method of use, which has the following beneficial effects: 1. By setting two reversible semi-cylindrical shells, and coordinating the linkage mechanism of rotating handle, sliding sleeve and hinge, after sampling, simply rotate the handle downwards to separate the two semi-cylindrical shells from each other, and the soil sample is separated from the cylinder wall. This avoids the disturbance and structural damage to the soil sample caused by the traditional integral cylinder forcibly pushing or knocking to demold, and improves the original state of the soil sample and the reliability of the test data.

[0016] 2. When sampling on uneven ground such as slopes, the lever-type pawl disengages from the friction wheel by rotating the connecting ring. The toothed column automatically falls to contact the slope surface under gravity. The lever-type pawl then resets, achieving stepless bidirectional locking, ensuring the lower ends of the four toothed columns are stably supported on the ground, keeping the semi-cylindrical shell essentially vertical. Simultaneously, the spline connection structure between the spline rod and spline sleeve provides vertical guidance during impact penetration, preventing sampling deviation due to terrain inclination and improving the accuracy and reliability of soil sample stratigraphic information.

[0017] 3. When the two semi-cylindrical shells close to form a complete soil extraction shell, the ring cutter touches the ground and is driven by the ground reaction force to move the limiting shell upward, locking the contacting blocks inside the limiting shell, effectively preventing the shell joints from opening or misaligning during the penetration process. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a soil sampler for geological exploration and its usage method according to the present invention; Figure 2This is a schematic diagram of the spline rod and the semi-cylindrical shell in this invention; Figure 3 This is a schematic diagram of the sliding plate and the ring blade in this invention; Figure 4 This is a schematic diagram of the structure of support plate one and support plate two in this invention; Figure 5 This is a schematic diagram of the semi-cylindrical shell and the locking block in this invention; Figure 6 This is a schematic diagram of the structure of the sliding sleeve and hinge component 1 in this invention; Figure 7 This is a schematic diagram of the sliding plate and the limiting shell in this invention; Figure 8 This is a schematic diagram of the structure of the guide rod 2 and the connecting ring in this invention; Figure 9 This is a schematic diagram of the structure of the gear and tooth post in this invention; Figure 10 This is a schematic diagram of the friction wheel and lever-type ratchet in this invention; Figure 11 This is a schematic diagram of the structure of the second hinge and the lever-type ratchet in this invention. Figure 12 This is a schematic diagram of the connecting ring and the limiting frame in this invention.

[0019] In the diagram: 1. Spline rod; 2. Connecting post one; 3. Support plate one; 4. Connecting block; 5. Semi-cylindrical shell; 6. Sliding sleeve; 7. Hinge one; 8. Bracket; 9. Connecting post two; 10. Rotating handle; 11. Connecting piece; 12. Support plate two; 13. Guide rod one; 14. Sliding plate; 15. Limiting shell; 16. Locking block; 17. Ring cutter; 18. Fixed post one; 19. Spring one; 191. Vertical rod; 192. Impact handle; 20. Spline sleeve; 21. Support frame; 22. Friction wheel; 23. Gear; 24. Toothed post; 25. Fixed shaft; 26. Lever-type pawl; 27. Spring two; 28. Sliding post; 29. ​​Connecting rod; 30. Hinge two; 31. Fixed post two; 32. Turntable; 33. Guide rod two; 34. Connecting ring; 35. Limiting frame; 36. Fixed plate. Detailed Implementation

[0020] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0022] In this invention, unless otherwise stated, the directional terms such as "up" and "down" generally refer to the directions shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" generally refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this invention.

[0023] This invention provides a soil sampler for geological exploration and its method of use, such as... Figures 1-6 As shown, it includes: spline rod 1, connecting column 1 2, support plate 1 3, connecting block 4, semi-cylindrical shell 5, sliding sleeve 6, hinge 1 7, bracket 8, connecting column 2 9, rotating handle 10, and connecting piece 11. Spline rod 1 is fixedly connected to connecting post 1 2. The lower end of connecting post 1 2 is fixedly connected to support plate 1 3. Support plate 1 3 is slidably connected to symmetrically distributed connecting blocks 4. Semi-cylindrical shells 5 are fixedly connected to the connecting blocks 4 on both sides respectively. Sliding sleeve 6 is slidably connected to connecting post 1 2. Hinge 1 7 is hinged between sliding sleeve 6 and semi-cylindrical shell 5. Support plate 1 3 is fixedly connected to two brackets 8. Support brackets 8 are slidably connected to connecting post 2 9. Connecting post 2 9 is fixedly connected to sliding sleeve 6. Two rotating handles 10 are provided. The two rotating handles 10 are rotatably connected to brackets 8 respectively. Connecting piece 11 is hinged between rotating handle 10 and connecting post 2 9.

[0024] When in use, push the rotating handle 10 upwards. The rotating handle 10 rotates along the bracket 8. The rotating handle 10 drives the connecting column 2 9 to slide upwards along the bracket 8 through the connecting piece 11. The connecting column drives the sliding sleeve 6 to slide upwards along the connecting column 1 2. The sliding sleeve 6 drives the semi-cylindrical shell 5 to move through the hinge 1 7. The semi-cylindrical shell 5 slides along the lower side of the support plate 1 3 through the connecting block 4. The two semi-cylindrical shells 5 contact each other and combine to form a circular soil sampling shell.

[0025] like Figure 5 ,and Figure 7 As shown, it includes: support plate 2 12, guide rod 13, sliding plate 14, limiting shell 15, locking block 16, ring blade 17, fixing column 18, spring 19, upright rod 191 and impact grip 192. Support plate 1 is fixedly connected to two support plates 12. Support plate 12 is fixedly connected to guide rod 13. Both guide rods 13 are perpendicular to support plate 13. Guide rod 13 is slidably connected to sliding plate 14. Sliding plate 14 is fixedly connected to two limiting shells 15. Both semi-cylindrical shells 5 are fixedly connected to locking blocks 16. Both sliding plates 14 are fixedly connected to a ring blade 17, which is located below the semi-cylindrical shell 5. Sliding plate 14 is fixedly connected to two fixing posts 18. Fixing posts 18 penetrate support plate 12 and are slidably connected to it. Fixing posts 18 are fitted with springs 19. The two ends of springs 19 are fixedly connected to support plate 12 and sliding plate 14, respectively. Spline rod 1 is fixedly connected to a vertical rod 191. The vertical rod 191 is slidably connected to an impact grip 192. The upper end of the vertical rod 191 limits the impact grip 192.

[0026] When the two semi-cylindrical shells 5 are combined to form a cylindrical soil-collecting shell, the two adjacent locking blocks 16 come into contact with each other. The device is placed at the soil-collecting point, and the ring cutter 17 is placed on the ground. Under the gravity of the semi-cylindrical shells 5, the ring cutter 17 and the semi-cylindrical shells 5 undergo relative displacement. The ring cutter 17 drives the sliding plate 14 to slide upward along the guide rod 13. The sliding plate 14 drives the limiting shell 15 to slide upward. The locking block 16 enters the limiting shell 15. The limiting shell 15 limits the locking block 16 inside. By limiting the locking block 16 through the limiting shell 15, the connection strength of the lower part of the two semi-cylindrical shells 5 is improved.

[0027] The sliding plate 14 drives the fixed column 18 to slide upward along the support plate 12, the spring 19 is compressed, and then the impact handle 192 moves back and forth along the upright 191. The impact handle 192 impacts the upper end of the spline rod 1, the ring cutter 17 and the semi-cylindrical shell 5 are inserted into the soil, and the soil removal operation is completed after the semi-cylindrical shell 5 is inserted into the soil.

[0028] Then, after the semi-cylindrical shell 5 is removed from the soil, under the elastic force of spring 19 and the gravity of the ring cutter 17, the ring cutter 17 and the sliding plate 14 slide down and reset along the guide rod 13. The limiting shell 15 no longer limits the locking block 16. Then, the two rotating handles 10 are rotated downwards. The rotating handles 10 drive the connecting column 9 to slide down along the bracket 8 through the connecting piece 11. The connecting column 9 drives the sliding sleeve 6 to move downwards. The sliding sleeve 6 drives the semi-cylindrical shell 5 to slide along the support plate 3 through the hinge 7, so that the two semi-cylindrical shells 5 are separated from each other. Then, the obtained soil sample is completely removed from the two semi-cylindrical shells 5, thereby reducing the interference with the soil sample.

[0029] like Figures 8-12As shown, it includes: spline sleeve 20, support frame 21, friction wheel 22, gear 23, toothed column 24, fixed shaft 25, lever-type ratchet pawl 26, spring 27, sliding column 28, connecting rod 29, hinge 30, fixed column 31, turntable 32, guide rod 33, connecting ring 34, limit frame 35 and fixing plate 36; Spline rod 1 is splinedly connected to a spline sleeve 20. Connecting post 2 limits the spline sleeve 20. The spline sleeve 20 is fixedly connected to a circumferentially spaced support frame 21. The support frame 21 is rotatably connected to two friction wheels 22. A gear 23 is fixedly connected between the two friction wheels 22. The support frame 21 is slidably connected to a toothed post 24, which meshes with the gear 23. The support frame 21 is fixedly connected to two fixed shafts 25. The fixed shafts 25 are rotatably connected to two lever-type pawls 26. The lever-type pawls 26 abut against adjacent friction wheels 22. A spring 27 is fixedly connected between adjacent lever-type pawls 26. The support frame 21 is slidably connected to a sliding... The movable column 28 and the sliding column 28 are fixedly connected to the connecting rod 29. The connecting rod 29 and the lever-type pawl 26 on the same side are hinged to the second hinge 30. The sliding column 28 is fixedly connected to the second fixed column 31. The spline sleeve 20 is rotatably connected to the turntable 32. The turntable 32 has inclined through slots distributed circumferentially. The second fixed column 31 slides in the inclined through slots of the turntable 32. The turntable 32 is fixedly connected to multiple guide rods 33. The multiple guide rods 33 are slidably connected to the connecting ring 34. The connecting ring 34 is fixedly connected to the circumferentially spaced limiting frame 35. The toothed column 24 is fixedly connected to the fixing plate 36. The fixing plate 36 limits the limiting frame 35.

[0030] When sampling the soil, the annular blade 17 is placed on the soil, and then the two semi-cylindrical shells 5 are aligned so that they are parallel to the direction of gravity. Then, the connecting ring 34 is rotated, and the connecting ring 34 drives the turntable 32 to rotate through the guide rod 33. The turntable 32 drives the fixed column 31 to move through the inclined through groove. The four fixed columns 31 move closer to each other, and the fixed columns 31 drive the sliding column 28 to slide along the support frame 21. The sliding column 28 drives the lever pawl 26 to rotate along the fixed shaft 25 through the connecting rod 29 and the hinge 30. The adjacent lever pawl 26 rotates and compresses the spring 27, and the lever pawl 26 loses contact with the outer ring surface of the friction wheel 22. Then, under the gravity of the toothed column 24, the toothed column 24 slides downward along the support frame 21. The toothed column 24 drives the gear 23 and the friction wheel 22 to rotate. Until the lower end of the toothed column 24 contacts the ground, and all four toothed columns 24 are in contact with the ground, the connecting ring 34 is released. Under the elastic force of the second spring 27, the lever pawl 26 rotates and resets along the fixed shaft 25. Under the elastic force of the second spring 27, the lever pawl 26 is pressed against the outer ring surface of the friction wheel 22 again. Through the reverse blocking action of the two adjacent lever pawls 26, the friction wheel 22 can be locked in both directions at any angle, thereby achieving stepless positioning and maintaining a stable position. After the friction wheel 22 is positioned, the gear 23 limits the toothed column 24 through its teeth, so that the lower end of the toothed column 24 is always in contact with the ground. The four toothed columns 24 provide support for the semi-cylindrical shell 5, so that even when sampling on an inclined slope, the semi-cylindrical shell 5 can be kept basically vertical.

[0031] During the process of inserting the semi-cylindrical shell 5 into the soil by impacting the handle 192, the spline rod 1 moves downward along the spline sleeve 20. The spline sleeve 20 guides the spline rod 1 to improve the verticality of the semi-cylindrical shell 5 into the soil, thereby preventing soil sample distortion.

[0032] After sampling, the connecting ring 34 is rotated, and the connecting ring 34 drives the turntable 32 to rotate through the guide rod 33, so that the lever pawl 26 loses contact with the friction wheel 22. Then, the connecting ring 34 is pulled up, so that it slides upward along the guide rod 33, and drives the limit frame 35 to move upward together. When the limit frame 35 contacts the fixed plate 36, the limit frame 35 drives the toothed column 24 to move upward along the support frame 21 to reset through the fixed plate 36. Then, the connecting ring 34 is rotated in the opposite direction, and the lever pawl 26 is reset under the elastic force of the spring 27.

[0033] Working principle of the invention: In use, the handle 10 is manually rotated, driving the hinged connector 11, which in turn causes the connecting column 2 9 to slide along the support 8. The sliding of the connecting column 2 9 causes the sliding sleeve 6 to move up and down along the connecting column 1 2. When the handle 10 is pushed upward, the sliding sleeve 6 moves upward, pulling the symmetrically distributed semi-cylindrical shells 5 on both sides through the hinge 1 7. This causes them to slide towards each other on the underside of the support plate 1 3 via the connecting block 4 and eventually come into contact with each other, forming a complete circular soil sampling shell to hold the soil sample. Conversely, when the handle 10 is pulled downward, the sliding sleeve 6 moves downward, causing the two semi-cylindrical shells 5 to slide in opposite directions and separate through the hinge 1 7, facilitating the complete and undisturbed extraction of the internal soil sample. After the two semi-cylindrical shells 5 close to form a complete soil-collecting shell, the locking blocks 16 at their bottoms come into contact with each other. The device is placed at the soil-collecting point so that the annular cutter 17 contacts the ground. Under the weight of the semi-cylindrical shells 5, they undergo relative displacement with the annular cutter 17. The annular cutter 17 is subjected to the reaction force of the ground and slides upward along the guide rod 13 via the sliding plate 14, simultaneously causing the limiting shell 15 to move upward. At this time, the locking blocks 16 that are in contact with each other enter the limiting shell 15 and are limited by it, thereby enhancing the connection strength of the lower parts of the two semi-cylindrical shells 5 and preventing the shells from separating during subsequent penetration. When the sliding plate 14 moves upward, it simultaneously drives the fixing column 18 to compress the spring 19, storing energy for subsequent reset.

[0034] The operator moves the impact handle 192 back and forth along the upright 191 and impacts the upper end of the spline rod 1, transmitting the impact force to the ring cutter 17 and the closed semi-cylindrical shell 5, causing it to be inserted vertically into the soil.

[0035] When sampling on uneven ground such as slopes, rotating the connecting ring 34 drives the turntable 32 to rotate via the guide rod 33. The inclined through groove on the turntable 32 forces the fixed column 31 to drive the sliding column 28 to slide radially along the support frame 21. The sliding column 28 drives the lever pawl 26 to rotate around the fixed shaft 25 via the connecting rod 29 and the hinge 30, compressing the spring 27 and disengaging the lever pawl 26 from the friction wheel 22. At this time, the toothed column 24 slides downward along the support frame 21 under the action of gravity, meshing and driving the gear 23 and the friction wheel 22 to rotate until the lower ends of all four toothed columns 24 are in stable contact with the slope surface. After releasing the connecting ring 34, the spring 27 rebounds, causing the lever pawl 26 to re-tighten against the outer ring surface of the friction wheel 22. The adjacent lever-type pawls 26 utilize the principle of reverse blocking to achieve stepless bidirectional locking of the friction wheel 22 and toothed column 24 at any angle, thereby providing a horizontal reference and stable support for the semi-cylindrical shell 5 on the inclined slope, keeping the semi-cylindrical shell 5 basically vertical. During this process, the spline connection structure between the spline rod 1 and the spline sleeve 20 provides vertical guidance, ensuring that the penetration direction is always perpendicular to the ground, preventing soil sample distortion due to inclined penetration.

[0036] After sampling, the device is pulled out of the soil. Under the combined action of the compressed spring 19 and the weight of the annular cutter 17, the annular cutter 17 and the sliding plate 14 slide downwards along the guide rod 13 to reset. The limiting shell 15 then descends and disengages from the locking block 16, releasing the lock on the lower part of the two semi-cylindrical shells 5. Subsequently, by turning the rotating handle 10 downwards according to the aforementioned mechanism, the two semi-cylindrical shells 5 are separated, and the soil sample can be completely removed from the open semi-cylindrical shells 5.

[0037] After sampling, rotate the connecting ring 34 again to disengage the lever-type pawl 26 from the friction wheel 22, and pull the connecting ring 34 upward. The connecting ring 34 slides upward along the guide rod 33 and drives the limiting frame 35. The limiting frame 35, through contact with the fixing plate 36, pulls the toothed post 24 upward to reset. Finally, rotate the connecting ring 34 in the opposite direction to relock the lever-type pawl 26 under the action of the spring 27, completing the reset and facilitating future use or storage.

[0038] A method for using a soil sampler for geological exploration, the specific steps of which are as follows: Step 1: Push the rotating handle 10 upward to drive the sliding sleeve 6 to move upward, so that the two semi-cylindrical shells 5 on both sides slide towards each other and combine to form a circular soil-collecting shell; at the same time, the ring cutter 17 moves upward relative to each other after touching the ground, driving the limiting shell 15 to lock the locking block 16. Step 2: On the slope, rotate the connecting ring 34 to release the friction wheel 22 by rotating the lever pawl 26. The toothed column 24 will automatically fall to contact the slope surface. Then the lever pawl 26 will reset to achieve stepless bidirectional locking, so that the semi-cylindrical shell 5 is basically kept vertical. Then, the impact handle 192 will reciprocate along the upright 191 to impact the spline rod 1, so that the ring cutter 17 and the semi-cylindrical shell 5 will penetrate the soil vertically to complete the soil extraction. Step 3: After the semi-cylindrical shell 5 is removed from the soil, the compressed spring 19 pushes the ring cutter 17 and the sliding plate 14 to return to their original position downwards, and the limiting shell 15 disengages from the locking block 16, thus releasing the lock on the lower part of the semi-cylindrical shell 5. Step 4: Pull the rotating handle 10 downwards to drive the sliding sleeve 6 to move downwards, causing the two semi-cylindrical shells 5 to slide and separate in opposite directions, thereby removing the soil sample inside without disturbance.

[0039] In all the solutions mentioned above, for connections between two components, welding, bolt and nut connection, bolt or screw connection, or other known connection methods can be selected according to the actual situation. These will not be elaborated here. For all fixed connections mentioned above, welding is preferred. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A soil sampler for geological exploration, characterized in that, include: Spline rod (1), the spline rod (1) is fixedly connected to a connecting column (2), the lower end of the connecting column (2) is fixedly connected to a support plate (3), the support plate (3) is slidably connected to a symmetrically distributed connecting block (4), and the connecting blocks (4) on both sides are respectively fixedly connected to a semi-cylindrical shell (5). The sliding sleeve (6) is slidably connected to the connecting column one (2). The sliding sleeve (6) and the semi-cylindrical shell (5) are hinged together by a hinge member one (7). The support plate one (3) is fixedly connected to two brackets (8). The brackets (8) are slidably connected to a connecting column two (9). The connecting column two (9) is fixedly connected to the sliding sleeve (6). There are two rotating handles (10), and the two rotating handles (10) are respectively rotatably connected to the bracket (8). A connecting piece (11) is hinged between the rotating handle (10) and the connecting column (9).

2. The soil sampler for geological exploration according to claim 1, characterized in that, The first support plate (3) is fixedly connected to two second support plates (12), and the second support plate (12) is fixedly connected to a guide rod (13). Both guide rods (13) are perpendicular to the first support plate (3). The guide rods (13) are slidably connected to a sliding plate (14). The sliding plate (14) is fixedly connected to two limiting shells (15), and both semi-cylindrical shells (5) are fixedly connected to a locking block (16).

3. A soil sampler for geological exploration according to claim 2, characterized in that, The two sliding plates (14) are jointly fixed with an annular blade (17), which is located below the semi-cylindrical shell (5).

4. A soil sampler for geological exploration according to claim 3, characterized in that, The sliding plate (14) is fixedly connected to two fixed posts (18), which pass through the support plate (12) and are slidably connected. The fixed post (18) is fitted with a spring (19), and the two ends of the spring (19) are fixedly connected to the support plate (12) and the sliding plate (14) respectively.

5. A soil sampler for geological exploration according to claim 4, characterized in that, The spline rod (1) is fixedly connected to a vertical rod (191), and the vertical rod (191) is slidably connected to an impact grip (192). The upper end of the vertical rod (191) limits the impact grip (192).

6. A soil sampler for geological exploration according to claim 5, characterized in that, The spline rod (1) is splinedly connected to a spline sleeve (20). The connecting post (2) limits the spline sleeve (20). The spline sleeve (20) is fixedly connected to a support frame (21) with circumferentially spaced intervals. The support frame (21) is rotatably connected to two friction wheels (22). A gear (23) is fixedly connected between the two friction wheels (22). The support frame (21) is slidably connected to a toothed post (24). The toothed post (24) meshes with the gear (23).

7. A soil sampler for geological exploration according to claim 6, characterized in that, The support frame (21) is fixedly connected to two fixed shafts (25), and the fixed shafts (25) are rotatably connected to two lever-type pawls (26). The lever-type pawls (26) abut against the adjacent friction wheel (22), and springs (27) are fixedly connected between the upper and lower adjacent lever-type pawls (26).

8. A soil sampler for geological exploration according to claim 7, characterized in that, The support frame (21) is slidably connected to a sliding column (28), the sliding column (28) is fixedly connected to a connecting rod (29), the connecting rod (29) is hinged to the lever-type pawl (26) on the same side with a second hinge (30), and the sliding column (28) is fixedly connected to a second fixing column (31).

9. A soil sampler for geological exploration according to claim 8, characterized in that, The spline sleeve (20) is rotatably connected to a turntable (32). The turntable (32) has inclined through slots spaced out in the circumferential direction. The fixed post (31) slides in the inclined through slots of the turntable (32). The turntable (32) is fixedly connected to multiple guide rods (33). A connecting ring (34) is slidably connected between the multiple guide rods (33). The connecting ring (34) is fixedly connected to a limiting frame (35) with circumferential intervals. The toothed post (24) is fixedly connected to a fixing plate (36). The fixing plate (36) limits the limiting frame (35).

10. A method of using a soil sampler for geological exploration, as described in claim 9, characterized in that... The specific steps for using a soil sampler are as follows: Step 1: Push the rotating handle (10) upward, the driving sleeve (6) moves upward, so that the two semi-cylindrical shells (5) on both sides slide towards each other and combine into a circular soil-collecting shell; at the same time, the ring blade (17) moves upward relative to each other after touching the ground, driving the limiting shell (15) to lock the locking block (16); Step 2: On the slope, rotate the connecting ring (34) to release the friction wheel (22) with the lever pawl (26), and the toothed column (24) will automatically fall to contact the slope surface. Then the lever pawl (26) will reset to achieve stepless bidirectional locking, so that the semi-cylindrical shell (5) remains basically vertical. Then, the impact handle (192) will reciprocate along the upright (191) to impact the spline rod (1), so that the ring cutter (17) and the semi-cylindrical shell (5) will penetrate the soil vertically to complete the soil extraction. Step 3: After the semi-cylindrical shell (5) is removed from the soil, the compressed spring (19) pushes the ring blade (17) and the sliding plate (14) to return to their original position downwards, and the limiting shell (15) disengages from the locking block (16), thus releasing the lock on the lower part of the semi-cylindrical shell (5). Step 4: Pull the rotating handle (10) downwards, and the driving sleeve (6) moves down, causing the two semi-cylindrical shells (5) to slide and separate in opposite directions, thereby removing the soil sample inside without disturbance.

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