A shallow soil sampling device for geotechnical investigation

Abstract

The utility model relates to soil taking device technical field discloses a shallow soil taking device for geotechnical investigation, including positioning piece, its layout is in sampling point, it is connected with sampling piece, and sampling piece adopts straight -push formula sampling, the surveying rod with scale is laid out in the upper end of positioning piece, the observation ring is slidably sleeved in the one end of surveying rod away from positioning piece, the fixed subassembly is laid out in the one end of sampling piece away from positioning piece, the connecting rod, and the observation ring and fixed subassembly are connected through connecting rod, and cutting assembly is laid out in sampling piece, and it is used for dividing sample and soil layer, the utility model discloses can let staff in the soil taking process can directly judge the depth of soil taking device insertion soil.

Description

Technical Field

[0001] This utility model relates to the field of soil sampling device technology, and in particular to a shallow soil sampling device for rock and soil exploration. Background Technology

[0002] When conducting geotechnical engineering investigations, soil sampling is necessary to provide a valid basis for geotechnical structure analysis, thereby supporting subsequent geotechnical engineering construction operations. Geotechnical engineering investigation sampling equipment must be used during sampling operations.

[0003] Existing soil sampling devices lack graduated markings, forcing operators to rely on experience to determine the insertion depth. This subjective approach is prone to error, making it difficult to accurately determine the soil sample depth and impacting the accuracy of subsequent analyses. Furthermore, to determine the sampling depth, operators first remove the sampling device from the soil, then push out the soil sample before measuring its depth. However, during this process, the originally continuous sample may break, be damaged, or compressed, potentially leading to discrepancies between the measured depth and the actual sampling depth.

[0004] Therefore, how to enable workers to directly determine the depth of the soil sampling device inserted into the soil during the soil sampling process has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] The present invention aims to provide a shallow soil sampling device for geotechnical exploration to overcome the shortcomings mentioned above.

[0006] To achieve the above objectives, the technical solution of this utility model is: a shallow soil sampling device for geotechnical exploration, comprising:

[0007] A positioning element is placed at the sampling point and connected to a sampling element, wherein the sampling element adopts a direct-push sampling method;

[0008] A graduated measuring rod is positioned at the upper end of the positioning element;

[0009] An observation ring is slidably fitted onto the end of the measuring rod away from the positioning element;

[0010] A fixing component is disposed at the end of the sampling member that is away from the positioning member;

[0011] The observation ring and the fixing assembly are connected by a connecting rod; and

[0012] The cutting component is provided inside the sampling element and is used to separate the sample from the soil layer.

[0013] Furthermore, the positioning element includes a support plate and a positioning sleeve, the positioning sleeve being fixedly connected to the support plate in the vertical direction, and the positioning sleeve being slidably connected to the sampling element.

[0014] Furthermore, the sampling component is a sampling cylinder with openings at the top and bottom. The sampling cylinder and the positioning sleeve are slidably connected. A semi-circular base plate is fixedly connected to the lower end of the sampling cylinder. Two limiting grooves are vertically oppositely arranged inside the sampling cylinder. The two limiting grooves and the partition plate are slidably connected. The sampling cylinder and the partition plate are detachably connected by fasteners. The outermost end face of the fastener is located inside the outer wall of the sampling cylinder. The gap between the base plate and the partition plate is used for the cutting part of the cutting assembly to extend or retract.

[0015] Furthermore, the cutting assembly includes a vertical plate, a cutting plate, and a limiting plate. The vertical plate is arranged inside the sampling cylinder. The lower end of the vertical plate is fixedly connected to the cutting plate. The cutting plate abuts against the upper end of the bottom plate. The limiting plate is selectively inserted between the vertical plate and the sampling cylinder or between the vertical plate and the partition plate, thereby causing the cutting plate to extend or retract into the gap between the bottom plate and the partition plate.

[0016] Furthermore, a first groove is provided on one pair of opposite sidewalls of the limiting plate near the upper end, and a second groove is provided on the other pair of opposite sidewalls of the limiting plate near the upper end.

[0017] Furthermore, the longitudinal section of the lower end of the limiting plate is trapezoidal.

[0018] Furthermore, the sampling tube is provided with at least one handle on the side wall near the upper end.

[0019] Furthermore, the fixing component includes a fixing ring and a sliding ring. The two fixing rings are respectively fixed to the end of the sampling cylinder away from the positioning member. The sliding ring is slidably and rotatably connected to the sampling cylinder, and the sliding ring is located between the two fixing rings. The observation ring and the sliding ring are connected by a connecting rod.

[0020] Furthermore, the upper end of the support plate is provided with a mounting groove, and the measuring rod is inserted into the mounting groove.

[0021] Furthermore, the lower end of the measuring rod is fixedly connected to the fixing plate, the fixing plate is adapted to the mounting groove, the mounting groove is connected to a first magnet, and the lower end of the fixing plate is connected to a second magnet, the first magnet and the second magnet attract each other.

[0022] Compared with existing technologies, this invention has at least the following advantages: In use, the positioning component is first placed at the sampling point, and the sampling position is determined by connecting the positioning component to the sampling component. The sampling component uses a direct-push sampling method, pushing it into the soil layer. As the sampling component advances into the soil layer, the fixing component moves downwards synchronously, driving the observation ring to slide in the same direction along the measuring rod via the connecting rod. Workers can observe the scale position of the observation ring on the measuring rod and directly read the insertion depth of the sampling component, eliminating the need for experience-based judgment and avoiding subjective errors. After sampling, the cutting component inside the sampling component is activated to separate the sample from the soil layer. When removing the device, since the depth has been determined during the soil sampling process, there is no need to measure after removing the sample, avoiding depth deviations caused by sample breakage or compression, and ensuring the accuracy of subsequent analysis. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall structure of the shallow soil sampling device for rock and soil exploration according to this utility model.

[0025] Figure 2 This is a cross-sectional view of the shallow soil sampling device for rock and soil exploration according to this utility model;

[0026] Figure 3 This is a cross-sectional view of the sampling cylinder and cutting assembly of this utility model in one of their states;

[0027] Figure 4 This is a top view of the sampling cylinder and cutting assembly of this utility model in one of their states;

[0028] Figure 5 This is a cross-sectional view of the sampling cylinder and cutting assembly of this utility model in another state;

[0029] Figure 6 This is a top view of the sampling cylinder and cutting assembly of this utility model in another state;

[0030] Figure 7 This is a schematic diagram of the structure of the limiting plate of this utility model;

[0031] Figure 8 This utility model Figure 2 A magnified view of a portion of region A in the middle.

[0032] Reference numerals in the attached drawings: 1. Measuring rod; 2. Observation ring; 3. Connecting rod; 4. Sampling cylinder; 5. Base plate; 6. Limiting groove; 7. Divider plate; 8. Vertical plate; 9. Cutting plate; 10. Limiting plate; 11. First groove; 12. Second groove; 13. Dust cover; 14. Handle; 15. Fixing ring; 16. Sliding ring; 17. Support plate; 18. Positioning sleeve; 19. Fixing plate; 20. Mounting groove; 21. First magnet; 22. Second magnet. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] Reference Figure 1-2 This utility model provides a shallow soil sampling device for geotechnical exploration, including a positioning component as the device positioning structure, which is placed at the sampling point and connected to the sampling component.

[0036] The positioning component includes a support plate 17 and a positioning sleeve 18. The positioning sleeve 18 is fixedly connected to the support plate 17 in the vertical direction and is slidably connected to the sampling component. The positioning sleeve 18 provides guidance for the vertical movement of the sampling component. The longitudinal section of the support plate 17 is convex, and several reinforcing ribs are provided at the two L-shaped corners of the support plate 17.

[0037] A graduated measuring rod 1 is positioned on the upper end of the positioning component.

[0038] The upper end of the support plate 17 is provided with a mounting groove 20, and the measuring rod 1 is inserted into the mounting groove 20.

[0039] Reference Figure 2 and Figure 8 The lower end of the measuring rod 1 is fixedly connected to the fixing plate 19. The fixing plate 19 is adapted to the mounting groove 20. The mounting groove 20 is connected to the first magnet 21. The lower end of the fixing plate 19 is connected to the second magnet 22. The first magnet 21 and the second magnet 22 attract each other.

[0040] Reference Figure 1-2 The observation ring 2 is slidably sleeved on the end of the measuring rod 1 away from the positioning part.

[0041] The fixing component is positioned at the end of the sampling component that is furthest from the positioning component.

[0042] The observation ring 2 and the fixing component are connected by the connecting rod 3.

[0043] Soil samples were obtained using a direct-push sampling method.

[0044] The sampling component is a sampling cylinder 4 with openings at the top and bottom. The sampling cylinder 4 and the positioning sleeve 18 are slidably connected. During sampling, a dust cover 13 made of silicone material is placed on the upper end of the sampling cylinder 4. A pad is placed on the upper end of the dust cover 13. The worker uses a hammer to strike the pad, causing the sampling cylinder 4 to enter the soil layer. A semi-circular base plate 5 is fixedly connected to the lower end of the sampling cylinder 4. Two limiting grooves 6 are vertically oppositely arranged inside the sampling cylinder 4. The two limiting grooves 6 are slidably connected to the partition plate 7. The sampling cylinder 4 and the partition plate 7 are detachably connected by fasteners. The outermost end face of the fastener is located inside the outer wall of the sampling cylinder 4. The fastener is an internal hex bolt. The gap between the base plate 5 and the partition plate 7 is used for the cutting part of the cutting component to extend or retract. The pad and the hammer are not shown in the figure.

[0045] Workers use a hammer to strike the pad, and the impact force pushes the sampling cylinder 4 into the soil layer along the positioning sleeve 18. The dust cover 13 made of silicone can prevent soil from entering the upper opening of the sampling cylinder 4 during the striking process. At the same time, the silicone material itself has good elasticity, which can buffer the impact force generated when the pad is struck, thereby reducing the impact damage of the pad to the upper end of the sampling cylinder 4.

[0046] The sampling unit is equipped with a cutting component, which is used to separate the sample from the soil layer.

[0047] Reference Figure 3-6 The cutting assembly includes a vertical plate 8, a cutting plate 9, and a limiting plate 10. The vertical plate 8 is arranged inside the sampling cylinder 4. The lower end of the vertical plate 8 is fixedly connected to the cutting plate 9. The cutting plate 9 abuts against the upper end of the bottom plate 5. The limiting plate 10 is selectively inserted between the vertical plate 8 and the sampling cylinder 4 or between the vertical plate 8 and the partition plate 7, thereby causing the cutting plate 9 to extend or retract into the gap between the bottom plate 5 and the partition plate 7.

[0048] When it is necessary to replace the vertical plate 8 and the cutting plate 9, disconnect the fastener from the partition plate 7, and then remove the partition plate 7, the vertical plate 8, and the cutting plate 9 in sequence.

[0049] Reference Figure 7 The limiting plate 10 has a first groove 11 on one pair of opposite sidewalls near the upper end, and a second groove 12 on the other pair of opposite sidewalls near the upper end.

[0050] The transverse cross-section of the limiting plate 10 is rectangular, and the longitudinal cross-section of the lower end of the limiting plate 10 is trapezoidal.

[0051] The sampling cylinder 4 has at least one handle 14 on its side wall near the upper end, and the handle 14 is provided with a rubber sleeve.

[0052] Reference Figure 1 The fixing component includes a fixing ring 15 and a sliding ring 16. The two fixing rings 15 are respectively fixed at the end of the sampling cylinder 4 away from the positioning component. The sliding ring 16 is slidably and rotatably connected to the sampling cylinder 4, and the sliding ring 16 is located between the two fixing rings 15. The observation ring 2 can move synchronously with the sampling cylinder 4 without affecting the rotation of the sampling cylinder 4. The observation ring 2 and the sliding ring 16 are connected by a connecting rod 3. The staff can judge the soil penetration depth of the sampling component by observing the sliding position of the observation ring 2 on the measuring rod 1.

[0053] The working principle of this utility model is as follows: When in use, the staff first places the support plate 17 at the preset sampling point and steps on both sides of the support plate 17. Then, the fixing plate 19 at the lower end of the measuring rod 1 is inserted into the mounting groove 20 of the support plate 17. The measuring rod 1 and the support plate 17 are fixed by the attraction between the first magnet 21 and the second magnet 22.

[0054] Before sampling, the limiting plate 10 is inserted between the vertical plate 8 and the partition plate 7. The opposite sidewalls of the limiting plate 10 abut against the sidewalls of the vertical plate 8 and the partition plate 7, respectively. The lower end of the limiting plate 10 abuts against the upper end of the cutting plate 9. The two vertical edges on the left side of the vertical plate 8 abut against the inner wall of the sampling cylinder 4. The cutting plate 9 retracts into the gap between the bottom plate 5 and the partition plate 7. At this time, the long side of the limiting plate 10 is parallel to the partition plate 7.

[0055] The worker holds the handle 14 on the side wall of the sampling cylinder 4 with both hands, and simultaneously strikes the pad with a hammer. The impact force is transmitted to the sampling cylinder 4 through the pad, causing the sampling cylinder 4 to gradually enter the soil layer along the guide direction of the positioning sleeve 18. During this process, the sliding ring 16 moves downward synchronously with the sampling cylinder 4, and drives the observation ring 2 to slide downward on the measuring rod 1 through the connecting rod 3. The worker can determine the depth of the sampling cylinder 4 into the soil layer by observing the position of the observation ring 2 on the measuring rod 1.

[0056] When the sampling tube 4 has finished sampling and needs to be cut, the staff first removes the dust cover 13 at the top of the sampling tube 4 to expose the internal limiting plate 10.

[0057] Pinch the two first grooves 11 with your fingers to lift the limiting plate 10, rotate the removed limiting plate 10 clockwise by 90 degrees and insert it into the gap between the vertical plate 8 and the sampling cylinder 4.

[0058] During the insertion of the limiting plate 10, the side wall of the limiting plate 10 pushes the vertical plate 8 to the right. The movement of the vertical plate 8 will cause the cutting plate 9 to move to the right in sync, so that the cutting plate 9 gradually extends out of the gap between the bottom plate 5 and the partition plate 7.

[0059] When the limiting plate 10 is fully inserted, the left side wall of the limiting plate 10 abuts against the inner wall of the sampling cylinder 4, the right side wall of the limiting plate 10 abuts against the left side wall of the partition plate 7, the lower end of the limiting plate 10 abuts against the upper end of the bottom plate 5, and the long side of the limiting plate 10 is perpendicular to the partition plate 7. At this time, the cutting plate 9 has been fully extended.

[0060] The staff member holds the handle 14 with both hands and drives the sampling tube 4 to rotate around its axis. The cutting plate 9 rotates synchronously with the sampling tube 4 to cut the soil at the lower end of the sampling tube 4, so that the sample inside the sampling tube 4 is separated from the soil layer, thereby completing the sampling work.

[0061] When resetting the limiting plate 10, the operator pinches the two second grooves 12 with their fingers to lift the limiting plate 10. Since the vertical plate 8 is in contact with the partition plate 7 during the cutting process, it is necessary to use an iron sheet (not shown in the figure) to separate the vertical plate 8 and the partition plate 7 to create a gap. The removed limiting plate 10 is rotated 90 degrees counterclockwise and inserted between the vertical plate 8 and the partition plate 7. At this time, the limiting plate 10 pushes the vertical plate 8 to move to the left, so that the cutting plate 9 retracts into the gap between the bottom plate 5 and the partition plate 7, so that the device can perform the next sampling operation.

[0062] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0063] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A shallow soil sampling device for rock and soil exploration, characterized in that, include: A positioning element is placed at the sampling point and connected to a sampling element, wherein the sampling element adopts a direct-push sampling method; A graduated measuring rod (1) is positioned on the upper end of the positioning element; The observation ring (2) is slidably sleeved on the end of the measuring rod (1) away from the positioning member; A fixing component is disposed at the end of the sampling member that is away from the positioning member; The connecting rod (3) connects the observation ring (2) and the fixing assembly; and The cutting component is provided inside the sampling element and is used to separate the sample from the soil layer.

2. The shallow soil sampling device for rock and soil exploration according to claim 1, characterized in that, The positioning component includes a support plate (17) and a positioning sleeve (18). The positioning sleeve (18) is fixedly connected to the support plate (17) in the vertical direction, and the positioning sleeve (18) is slidably connected to the sampling component.

3. The shallow soil sampling device for geotechnical investigation according to claim 2, characterized in that, The sampling component is a sampling cylinder (4) with openings at the top and bottom. The sampling cylinder (4) and the positioning sleeve (18) are slidably connected. A semi-circular base plate (5) is fixedly connected to the lower end of the sampling cylinder (4). Two limiting grooves (6) are vertically oppositely arranged inside the sampling cylinder (4). The two limiting grooves (6) and the partition plate (7) are slidably connected. The sampling cylinder (4) and the partition plate (7) are detachably connected by fasteners. The outermost end face of the fastener is located inside the outer wall of the sampling cylinder (4). The gap between the base plate (5) and the partition plate (7) is used for the cutting part of the cutting assembly to extend or retract.

4. The shallow soil sampling device for geotechnical investigation according to claim 3, characterized in that, The cutting assembly includes a vertical plate (8), a cutting plate (9), and a limiting plate (10). The vertical plate (8) is arranged inside the sampling cylinder (4). The lower end of the vertical plate (8) is fixedly connected to the cutting plate (9). The cutting plate (9) abuts against the upper end of the bottom plate (5). The limiting plate (10) is selectively inserted between the vertical plate (8) and the sampling cylinder (4) or between the vertical plate (8) and the partition plate (7), thereby causing the cutting plate (9) to extend or retract into the gap between the bottom plate (5) and the partition plate (7).

5. The shallow soil sampling device for rock and soil exploration according to claim 4, characterized in that, The limiting plate (10) has a first groove (11) on one pair of opposite sidewalls near the upper end, and a second groove (12) on the other pair of opposite sidewalls near the upper end.

6. The shallow soil sampling device for geotechnical investigation according to claim 4, characterized in that, The longitudinal section of the lower end of the limiting plate (10) is trapezoidal.

7. The shallow soil sampling device for geotechnical investigation according to claim 4, characterized in that, The sampling tube (4) has at least one handle (14) on its side wall near the upper end.

8. The shallow soil sampling device for geotechnical investigation according to claim 3, characterized in that, The fixing component includes a fixing ring (15) and a sliding ring (16). The two fixing rings (15) are respectively fixed to the end of the sampling cylinder (4) away from the positioning member. The sliding ring (16) and the sampling cylinder (4) are slidably and rotatably connected, and the sliding ring (16) is located between the two fixing rings (15). The observation ring (2) and the sliding ring (16) are connected by a connecting rod (3).

9. The shallow soil sampling device for geotechnical investigation according to claim 8, characterized in that, The upper end of the support plate (17) is provided with a mounting groove (20), and the measuring rod (1) is inserted into the mounting groove (20).

10. The shallow soil sampling device for geotechnical investigation according to claim 9, characterized in that, The lower end of the measuring rod (1) is fixedly connected to the fixing plate (19). The fixing plate (19) is adapted to the mounting groove (20). The mounting groove (20) is connected to a first magnet (21). The lower end of the fixing plate (19) is connected to a second magnet (22). The first magnet (21) and the second magnet (22) attract each other.

Images