Cutting ring soil sample preparation device

Abstract

The utility model relates to the technical field of soil tests, in particular to a cutting ring soil sample preparation device. The cutting ring soil sample preparation device comprises an upper clamping structure and a lower clamping structure which are used for realizing opening and closing of the upper clamping structure and the lower clamping structure; an upper thrust structure and an upper permeable stone detachably connected with the upper thrust structure are coaxially arranged at one end of the upper clamping structure, and the upper thrust structure rotates around the axial direction of the upper thrust structure and the axial direction perpendicular to the upper thrust structure relative to the upper clamping structure at the same time. A lower thrust structure and a lower permeable stone detachably connected with the lower thrust structure are coaxially arranged at one end of the lower clamping structure, and the lower thrust structure simultaneously rotates around the axial direction of the lower thrust structure and the axial direction perpendicular to the lower thrust structure relative to the lower clamping structure; a to-be-cut soil sample is coaxially clamped between the upper water-permeable stone and the lower water-permeable stone, and the upper water-permeable stone, the to-be-cut soil sample, the lower water-permeable stone and the lower thrust structure are driven to coaxially rotate under the rotation action of the upper water-permeable stone, so that cylindrical cutting of the to-be-cut soil sample is realized.

Description

Technical Field

[0001] This utility model belongs to the field of geotechnical testing technology, specifically relating to a ring sample preparation device. Background Technology

[0002] In geotechnical testing, the ring sample is a commonly used soil sample form, with a diameter of 61.8 mm and a height of 20 mm. It is generally obtained using a ring sampler and is mainly used to determine the soil's shear strength, compressibility, and other physical and mechanical properties. The ring sample size must strictly meet the requirements; if it is too large, it will be impossible to fit the ring sampler and testing equipment; if it is too small, it will lead to experimental errors.

[0003] There are generally two methods for preparing ring samplers: the compression method and the cutting method. The compression method is generally used for remolded soil tests, while the cutting method is generally used for undisturbed soil or harder soil clods. This utility model mainly focuses on innovative preparation of the cutting method.

[0004] Traditional methods for preparing soil samples involve cutting them out piece by piece. For example, the "Specifications for Geotechnical Testing in Highway Engineering JTG 3430-2020" states, "Take out the soil sample, place it upright, and level both ends. Apply a thin layer of Vaseline to the inner wall of the cutting ring, place it on the soil sample with the cutting edge facing down, and press the ring vertically downwards while cutting until the soil sample extends beyond the top of the ring. Then, flatten both ends of the ring." Similarly, the "Standard for Geotechnical Testing Methods GB / T 50123-2019" states, "Apply a thin layer of Vaseline to the inner wall of the cutting ring used for testing, place it on the soil sample with the cutting edge facing down. Use a cutting tool to cut the soil sample into a soil column slightly larger than the diameter of the ring. Then press the ring vertically downwards while cutting until the soil sample extends beyond the ring. Cut the specimen; the specimen and the ring should fit tightly." However, such sample preparation methods are prone to significant errors in practice, are highly subjective, and lack strict dimensional constraints. Moreover, the workload is large and the time consumption is long, which puts a great test on the energy and physical strength of the experimental personnel.

[0005] Existing ring sampler preparation tools are primarily designed for compaction methods. This involves placing a certain mass of soil sample into a compaction container of a specific volume and then compacting it to form a ring sample. The advantages of this compaction method are that it can quickly produce ring samples that match the required diameter and allow for rapid control of the compacted sample density. However, its disadvantages include the inability to prepare ring samples of undisturbed soil or harder soils. Furthermore, existing commercially available samplers can only sample relatively tall specimens, typically between 80 and 100 mm in height, making them unsuitable for preparing ring samples. Moreover, the anti-slip mechanism of these samplers involves a needle disc piercing the soil and then rotating to cut the sample, resulting in significant disturbance to the soil sample. Utility Model Content

[0006] The purpose of this invention is to provide a ring cutter soil sample preparation device to solve the problems of inaccurate dimensions and time-consuming and labor-intensive process when preparing ring cutter samples of undisturbed or hard soil samples in the prior art.

[0007] To address the aforementioned problems, this utility model proposes a ring cutter soil sample preparation device, the technical solution of which is as follows:

[0008] A ring cutter soil sample preparation device includes an upper clamping structure and a lower clamping structure connected by an elastic rotating shaft for opening and closing. One end of the upper clamping structure is coaxially provided with an upper thrust structure and an upper permeable stone detachably connected thereto. The upper thrust structure rotates relative to the upper clamping structure both around its axial direction and perpendicular to its axial direction. One end of the lower clamping structure is coaxially provided with a lower thrust structure and a lower permeable stone detachably connected thereto. The lower thrust structure rotates relative to the lower clamping structure both around its axial direction and perpendicular to its axial direction. The upper and lower permeable stones coaxially clamp the soil sample to be cut, and the rotation of the upper permeable stone causes the upper permeable stone, the soil sample to be cut, the lower permeable stone, and the lower thrust structure to rotate coaxially, thereby achieving cylindrical cutting of the soil sample.

[0009] Furthermore, the upper clamping structure includes an upper clamping frame and an upper handle integrally connected thereto, and the lower clamping structure includes a lower clamping frame and a lower handle integrally connected thereto, wherein the end of the upper clamping frame away from the upper handle is connected to the upper thrust structure, and the end of the lower clamping frame away from the lower handle is connected to the lower thrust structure.

[0010] Furthermore, the upper thrust structure and the lower thrust structure are respectively an upper shell thrust bearing and a lower shell thrust bearing, and when the soil sample to be cut is clamped, the upper shell thrust bearing, the upper permeable stone, the lower shell thrust bearing and the lower permeable stone are coaxially arranged.

[0011] Furthermore, the upper casing thrust bearing is connected to the upper clamping frame via an upper rotating shaft, allowing the upper casing thrust bearing to rotate relative to the upper clamping frame in an axial direction perpendicular to the upper casing thrust bearing; the lower casing thrust bearing is connected to the lower clamping frame via a lower rotating shaft, allowing the lower casing thrust bearing to rotate relative to the lower clamping frame in an axial direction perpendicular to the lower casing thrust bearing.

[0012] Furthermore, the upper rotating shaft is mounted on the upper clamping frame at one end away from the upper handle along an axial direction perpendicular to the upper casing thrust bearing; the lower rotating shaft is mounted on the lower clamping frame at one end away from the lower handle along an axial direction perpendicular to the lower casing thrust bearing.

[0013] Furthermore, an upper tray is installed on the end of the upper rotating shaft away from the upper clamping frame, and a lower tray is installed on the end of the lower rotating shaft away from the lower clamping frame.

[0014] Furthermore, an upper iron plate is installed between the upper tray and the upper casing thrust bearing, and the upper casing thrust bearing and the upper iron plate are rotatably connected. A lower iron plate is installed between the lower tray and the lower casing thrust bearing, and the lower casing thrust bearing and the lower iron plate are rotatably connected.

[0015] Furthermore, the elastic shaft is a spring bearing.

[0016] Furthermore, both the upper and lower clamping frames are right-angled U-shaped structures.

[0017] Furthermore, the size of the upper permeable stone and the lower permeable stone can be adjusted according to the size of the soil sample to be cut.

[0018] Compared with the prior art, this application has the following beneficial effects:

[0019] This utility model is an improved utility model, providing a relatively simple ring cutter soil sample preparation device. It utilizes an upper clamping structure and a lower clamping structure to provide clamping force, effectively securing the entire soil sample to be cut. The upper thrusting structure rotates relative to the upper clamping structure both around its axial direction and perpendicular to it. Similarly, the lower thrusting structure rotates relative to the lower clamping structure both around its axial direction and perpendicular to it. This ensures that the upper and lower surfaces of the upper thrusting structure, the upper permeable stone, the soil sample to be cut, the lower permeable stone, and the lower thrusting structure are all on the same axis of rotation, guaranteeing the clamping of the soil sample. Simultaneously, the upper and lower permeable stones enclose the soil sample, allowing for precise control of the cutting size and enabling rotational cutting along the edge of the permeable stone. This achieves precise cylindrical cutting of the soil sample, solving the problems of inaccurate dimensions and time-consuming processes in existing ring cutter preparation techniques for undisturbed or hard soil samples.

[0020] In addition, the ring sampler soil sample preparation device of this application also has the following effects:

[0021] (1) The cost is low, the components are readily available, and large-scale production is possible;

[0022] (2) The ring cutter soil sample preparation device has a simple structure and can be quickly assembled according to the drawings, making it convenient for laboratory fabrication;

[0023] (3) The ring sampler preparation device speeds up the sample preparation process, reduces the workload of the experimenters, and is relatively easy to use;

[0024] (4) It improved the success rate of making ring cutter samples and reduced the cracking and edge damage of soil samples in the traditional production process;

[0025] (5) Since the upper and lower permeable stones are detachably connected, the device can produce ring cutter samples of various sizes. By adjusting the size of the upper and lower permeable stones, it is very convenient to prepare ring cutter samples of different diameters. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the ring cutter soil sample preparation device of this utility model when it is not in use;

[0027] Figure 2 This is a schematic diagram of the state of the ring cutter soil sample preparation device of this utility model when it is opened;

[0028] Figure 3 This is a schematic diagram of the state of the ring cutter soil sample preparation device of this utility model when clamping the soil sample to be cut;

[0029] Figure 4 This is a schematic diagram of the state of the soil sample after the ring cutter soil sample preparation device of this utility model has been cut;

[0030] In the diagram, 1. Upper clamping frame; 2. Lower clamping frame; 3. Upper handle; 4. Lower handle; 5. Upper permeable stone; 6. Lower permeable stone; 7. Upper casing thrust bearing; 8. Lower casing thrust bearing; 9. Upper rotating shaft; 10. Lower rotating shaft; 11. Upper tray; 12. Upper iron sheet; 13. Spring bearing; 14. Soil sample to be cut; 15. Cylindrical soil sample. Detailed Implementation

[0031] As cited in the background art, existing technologies for preparing ring cutter samples suffer from inaccurate dimensions and are time-consuming and labor-intensive for preparing undisturbed or hard soil samples. Therefore, this invention provides a ring cutter soil sample preparation device, comprising: an upper clamping structure and a lower clamping structure, providing the skeleton of the entire device and providing clamping force to securely clamp the entire soil sample to be cut. The two structures are connected by an elastic rotating shaft to allow for the opening and closing of the upper and lower clamping structures. One end of the upper clamping structure is coaxially provided with an upper thrust structure and an upper permeable stone detachably connected thereto. The upper thrust structure rotates relative to the upper clamping structure both around its axial direction and perpendicular to its axial direction. One end of the lower clamping structure is coaxially provided with a lower thrust structure and a lower permeable stone detachably connected thereto. The lower thrust structure rotates relative to the lower clamping structure both around its axial direction and perpendicular to its axial direction to allow for the opening and closing of the upper and lower clamping structures. The upper and lower surfaces of the thrust structure, the upper permeable stone, the soil sample to be cut, the lower permeable stone, and the lower thrust structure are all on the same rotation axis, ensuring the clamping state of the soil sample to be cut. The upper and lower permeable stones are used to coaxially clamp the soil sample to be cut. The rough surface of the permeable stone can prevent the soil sample from sliding. It should not move during the clamping and cutting process, thus improving the accuracy of sample preparation. Under the rotation of the upper permeable stone, the upper thrust structure, the soil sample to be cut, the lower permeable stone, and the lower thrust structure rotate coaxially. The upper and lower permeable stones wrap around the soil sample to be cut, which can strictly control the cutting size of the soil sample to be cut, so as to achieve a cylindrical cutting of the soil sample with precise dimensions. This solves the problems of inaccurate dimensions and time-consuming and labor-intensive processes when preparing ring cutter samples of undisturbed soil or hard soil samples in the existing technology.

[0032] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0033] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0034] Specific embodiment 1 of the ring cutter soil sample preparation device of this utility model:

[0035] In this embodiment, as Figure 1 , Figure 2 and Figure 3 As shown, the ring cutter soil sample preparation device includes an upper clamping structure and a lower clamping structure, which are connected by an elastic rotating shaft to realize the opening and closing of the upper and lower clamping structures. One end of the upper clamping structure is coaxially provided with an upper thrusting structure and an upper permeable stone 5 detachably connected to it. The upper thrusting structure rotates relative to the upper clamping structure both around the axial direction of the upper thrusting structure and perpendicular to the axial direction of the upper thrusting structure. One end of the lower clamping structure is coaxially provided with a lower thrusting structure and a lower permeable stone 6 detachably connected to it. The lower thrusting structure rotates relative to the lower clamping structure both around the axial direction of the lower thrusting structure and perpendicular to the axial direction of the lower thrusting structure. The upper permeable stone 5 and the lower permeable stone 6 are used to coaxially clamp the soil sample 14 to be cut. Under the rotation of the upper permeable stone 5, the upper thrusting structure, the soil sample 14 to be cut, the lower permeable stone 6, and the lower thrusting structure rotate coaxially to realize the cylindrical cutting of the soil sample 14 to be cut. Among them, the elastic shaft is a spring bearing 13, and the upper and lower clamping structures are opened and closed under the action of the spring bearing 13; the diameter of the upper permeable stone 5 and the lower permeable stone 6 can be adjusted according to the size of the soil sample 14 to be cut.

[0036] Specifically, permeable stones have a rough surface, which can stably hold the soil sample during rotation and cutting, preventing movement during cutting. Therefore, any circular disk with a rough surface and a fixed diameter should also be considered an equivalent substitute for this patent. For example, "rough steel or plastic disks," or "sandpaper applied to the surface of steel or plastic disks." This utility model uses permeable stones to determine the diameter mainly because permeable stones are inexpensive and widely used in geotechnical laboratories. Commonly used permeable stone sizes in geotechnical laboratories include 39.1mm, 61.8mm, 79.8mm, and 110mm.

[0037] In other embodiments, the sizes of the permeable stone and the lower permeable stone 6 may be non-adjustable.

[0038] Specific embodiment 2 of the ring cutter soil sample preparation device of this utility model:

[0039] Based on the above-described technical concept of this utility model, or based on the specific embodiments of this utility model described above, another embodiment is provided below.

[0040] In this embodiment, as Figure 1 and Figure 2As shown, the upper clamping structure includes an upper clamping frame 1 and an upper handle 3 integrally connected thereto. The lower clamping structure includes a lower clamping frame 2 and a lower handle 4 integrally connected thereto. The end of the upper clamping frame 1 away from the upper handle 3 is connected to the upper thrust structure, and the end of the lower clamping frame 2 away from the lower handle 4 is connected to the lower thrust structure. The upper thrust structure and the lower thrust structure are respectively an upper casing thrust bearing 7 and a lower casing thrust bearing 8. When the soil sample 14 to be cut is clamped, the upper casing thrust bearing 7, the upper permeable stone 5, the lower casing thrust bearing 8, and the lower permeable stone 6 are coaxially arranged. Both the upper clamping frame 1 and the lower clamping frame 2 are right-angled U-shaped structures.

[0041] Specifically, the upper casing thrust bearing 7 is connected to the upper clamping frame 1 via an upper rotating shaft 9, allowing the upper casing thrust bearing 7 to rotate relative to the upper clamping frame 1 about an axial direction perpendicular to the upper casing thrust bearing 7; the lower casing thrust bearing 8 is connected to the lower clamping frame 2 via a lower rotating shaft 10, allowing the lower casing thrust bearing 8 to rotate relative to the lower clamping frame 2 about an axial direction perpendicular to the lower casing thrust bearing 8, thus enabling the placement and clamping of the soil sample 14 to be cut. The upper rotating shaft 9 is mounted on the upper clamping frame 1 at the end away from the upper handle 3 along an axial direction perpendicular to the upper casing thrust bearing 7; the lower rotating shaft 10 is mounted on the lower clamping frame 2 at the end away from the lower handle 4 along an axial direction perpendicular to the lower casing thrust bearing 8.

[0042] The above structure is applied as follows: After clamping the soil sample 14 to be cut, gently rotate the upper permeable stone 5 by hand. If there is a large resistance to the rotation of the soil sample 14 to be cut, the upper and lower surfaces of the soil sample 14 to be cut do not share a common axis of rotation and cannot be cut into a cylindrical shape along the edge of the permeable stone. At this time, after slight adjustments, the upper shell thrust bearing 7 rotates slightly around the upper rotating shaft 9, and the lower shell thrust bearing 8 rotates slightly around the lower rotating shaft 10, so that the upper shell thrust bearing 7, the upper permeable stone 5, the upper and lower surfaces of the soil sample 14 to be cut, the lower permeable stone 6, and the lower shell thrust bearing 8 are on the same axis of rotation.

[0043] In this embodiment, an upper tray 11 is installed at the end of the upper rotating shaft 9 away from the upper clamping frame 1, and a lower tray is installed at the end of the lower rotating shaft 10 away from the lower clamping frame 2. An upper iron plate 12 is installed between the upper tray 11 and the upper casing thrust bearing 7, and the upper casing thrust bearing 7 and the upper iron plate 12 are rotatably connected. A lower iron plate is installed between the lower tray and the lower casing thrust bearing 8, and the lower casing thrust bearing 8 and the lower iron plate are rotatably connected. That is, when cutting the soil sample 14 to be cut, the rotation of the upper permeable stone 5 drives the upper permeable stone 5, the soil sample 14 to be cut, the lower permeable stone, and the lower thrust structure to rotate coaxially, so as to realize the cylindrical cutting of the soil sample 14 to be cut.

[0044] In other embodiments, the upper clamping frame 1 and the lower clamping frame 2 can be a U-shaped structure with an angle, as long as they can be clamped stably.

[0045] Specifically, the method of using the ring cutter soil sample preparation device of this application is as follows:

[0046] The first step is to prepare a soil sample 14 of appropriate thickness. Large undisturbed soil pieces are trimmed into 25-30mm samples using a saw or saw blade, ensuring the upper and lower surfaces of the soil sample 14 are flat. In this case, permeable stones with a diameter of 61.8mm are used, which are perfectly fitted into the ring cutter. At this point, the permeable stone provides the cutting boundary for the soil sample 14, ensuring it fits precisely within the 61.8mm diameter limit.

[0047] The second step, as Figure 2 As shown, the lower clamping frame 2 and the lower clamping frame 4 are opened by the upper handle 3 and the lower handle 4, and the soil sample 14 to be cut prepared in the first step is placed between the upper permeable stone 5 and the lower permeable stone 6 and clamped. The clamping force comes from the spring bearing 13.

[0048] The third step is to adjust the position of soil sample 14 to be cut. For example... Figure 3 As shown, when the soil sample 14 to be cut is clamped between two permeable stones, the upper permeable stone 5 and the lower permeable stone 6, as well as the upper shell thrust bearing 7 and the lower shell thrust bearing 8, may not have a common axis of rotation. At this time, after multiple micro-adjustments of the upper shell thrust bearing 7 and the lower shell thrust bearing 8, the upper shell thrust bearing 7, the upper permeable stone 5, the lower shell thrust bearing 8 and the lower permeable stone 6 are set to rotate coaxially, so that a perfect cylindrical sample can be cut out by rotation.

[0049] Step 4: Rotate the soil sample to be cut by 14. (Example) Figure 4 As shown, rotate the upper permeable stone 5 with one hand, which will drive the upper shell thrust bearing 7, the soil sample 14 to be cut, the lower permeable stone and the lower shell thrust bearing 8 to rotate coaxially. At the same time, use a saw to cut the soil sample along the edge of the permeable stone, gradually making the soil sample into a perfect cylinder, so as to achieve the cylindrical cutting of the soil sample 14 to be cut.

[0050] The fifth step is to adjust the height of the cylindrical soil sample 15. Since the cylindrical soil sample 15, made in step four, still has a slight height difference (slightly higher than the ring cutter), it needs to be placed inside the ring cutter. The soil sample should then be leveled along the top and bottom of the ring cutter until it matches the height of the ring cutter. At this point, the perfect ring cutter soil sample is complete. Because the permeable stone is used in conjunction with the ring cutter, the outer diameter of the permeable stone is equal to the inner diameter of the ring cutter. Therefore, permeable stones and ring cutters come in multiple sizes; when making ring cutter samples of different diameters, simply replace the corresponding permeable stone.

[0051] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. The patent protection scope of the present utility model shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present utility model shall also be included in the protection scope of the present utility model.

Claims

1. A ring cutter soil sample preparation device, characterized in that, include: The upper clamping structure and the lower clamping structure are connected by an elastic pivot to enable the opening and closing of the upper clamping structure and the lower clamping structure. One end of the upper clamping structure is coaxially provided with an upper thrust structure and an upper permeable stone (5) detachably connected to it. The upper thrust structure rotates relative to the upper clamping structure around the axial direction of the upper thrust structure and perpendicular to the axial direction of the upper thrust structure. One end of the lower clamping structure is coaxially provided with a lower thrust structure and a lower permeable stone (6) detachably connected to it. The lower thrust structure rotates relative to the lower clamping structure around the axial direction of the lower thrust structure and perpendicular to the axial direction of the lower thrust structure. The upper permeable stone (5) and the lower permeable stone (6) are used to coaxially clamp the soil sample (14) to be cut. Under the rotation of the upper permeable stone (5), the upper permeable stone (5), the soil sample (14) to be cut, the lower permeable stone (6) and the lower thrust structure rotate coaxially to achieve cylindrical cutting of the soil sample (14).

2. The ring cutter soil sample preparation device according to claim 1, characterized in that, The upper clamping structure includes an upper clamping frame (1) and an upper handle (3) integrally connected thereto. The lower clamping structure includes a lower clamping frame (2) and a lower handle (4) integrally connected thereto. The upper clamping frame (1) is connected to the upper thrust structure at one end away from the upper handle (3), and the lower clamping frame (2) is connected to the lower thrust structure at one end away from the lower handle (4).

3. The ring cutter soil sample preparation device according to claim 2, characterized in that, The upper thrust structure and the lower thrust structure are respectively the upper shell thrust bearing (7) and the lower shell thrust bearing (8), and when the soil sample (14) to be cut is clamped, the upper shell thrust bearing (7), the upper permeable stone (5), the lower shell thrust bearing (8) and the lower permeable stone (6) are coaxially arranged.

4. The ring cutter soil sample preparation device according to claim 3, characterized in that, The upper casing thrust bearing (7) is connected to the upper clamping frame (1) via an upper rotating shaft (9), so that the upper casing thrust bearing (7) rotates relative to the upper clamping frame (1) in an axial direction perpendicular to the upper casing thrust bearing (7); the lower casing thrust bearing (8) is connected to the lower clamping frame (2) via a lower rotating shaft (10), so that the lower casing thrust bearing (8) rotates relative to the lower clamping frame (2) in an axial direction perpendicular to the lower casing thrust bearing (8).

5. The ring cutter soil sample preparation device according to claim 4, characterized in that, The upper rotating shaft (9) is installed on the upper clamping frame (1) at one end away from the upper handle (3) in an axial direction perpendicular to the upper casing thrust bearing (7); the lower rotating shaft (10) is installed on the lower clamping frame (2) at one end away from the lower handle (4) in an axial direction perpendicular to the lower casing thrust bearing (8).

6. The ring cutter soil sample preparation device according to claim 5, characterized in that, An upper tray (11) is installed on the end of the upper rotating shaft (9) away from the upper clamping frame (1), and a lower tray is installed on the end of the lower rotating shaft (10) away from the lower clamping frame (2).

7. The ring cutter soil sample preparation device according to claim 6, characterized in that, An upper iron plate (12) is installed between the upper tray (11) and the upper casing thrust bearing (7), and the upper casing thrust bearing (7) and the upper iron plate (12) are rotatably connected. A lower iron plate is installed between the lower tray and the lower casing thrust bearing (8), and the lower casing thrust bearing (8) and the lower iron plate are rotatably connected.

8. The ring sampler soil sample preparation apparatus according to any one of claims 1-7, characterized in that, The elastic shaft is a spring bearing (13).

9. The ring sampler soil sample preparation apparatus according to any one of claims 2-7, characterized in that, Both the upper clamping frame (1) and the lower clamping frame (2) are right-angled U-shaped structures.

10. The ring sampler soil sample preparation apparatus according to any one of claims 1-7, characterized in that, The size of the upper permeable stone (5) and the lower permeable stone can be adjusted according to the size of the soil sample (14) to be cut.

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