Soil sampling device capable of accurately controlling sampling depth

Abstract

The utility model discloses a soil sampling device capable of accurately controlling sampling depth, which relates to the technical field of soil sampling and comprises a base, a control mechanism is arranged above the base, a lifting plate is arranged at the top of one end of the base, and a guide rod is arranged at the bottom end of the lifting plate. According to the soil sampling device capable of accurately controlling the sampling depth, an observation rod is in a vertical state all the time and is in a horizontal state if the observation rod can enter a groove during inspection, and if the observation rod does not enter the groove, a right threaded rod is rotated again to ensure that a base is in a horizontal state, so that a sampling barrel and a vertical rod on the base are also in the vertical state; the sampling device is simple in structure and convenient to use, inclination is avoided, the situation that the sampling depth is inaccurate due to the fact that the sampling device cannot reach the designated position subsequently is prevented, the tape can be stretched through downward movement of the limiting plate, the distance between the limiting plate and the pushing plate is the descending distance of the sampling barrel, the sampling depth can be accurately controlled, and use is convenient.

Description

Technical Field

[0001] This utility model relates to the field of soil sampling technology, specifically a soil sampling device for precisely controlling the sampling depth. Background Technology

[0002] Soil sampling is a crucial step in obtaining soil samples for analysis and research. It helps to understand the physical, chemical, and biological properties of the soil, such as soil texture, nutrient content, pH, and microbial community, in order to provide a basis for agricultural production, environmental protection, geological research, and other fields.

[0003] A search of patent application number CN202221363519.2 reveals that this utility model discloses a deep soil sampling device, relating to the field of soil testing technology. This utility model, through the design of driving and auxiliary components, uses the rotation of a lead screw to drive the sampling tube and sampling rod to rotate. The sampling disc spirals downwards to cut the soil, allowing the sampling tube and sampling rod to insert into the soil. However, when sampling soil at different depths, if the ground is uneven, the entire device will be tilted, causing the sampling tube's trajectory to be inclined. As the insertion depth increases, it becomes impossible to accurately reach the designated position, resulting in an inability to precisely control the sampling depth.

[0004] Further searching patent application number CN202323198049.6 reveals that this utility model relates to the field of soil sampling technology and discloses a deep soil sampling device. In this device, the sampling bucket can be disassembled downwards. When the fixing block and the sliding groove come into contact, the sampling bucket is fixedly installed on the outer wall of the mounting plate, achieving convenient installation and disassembly. This facilitates the disassembly and cleaning of the sampling bucket by the staff, solving the problem that existing deep soil sampling devices do not have good convenient disassembly functionality. Furthermore, when sampling soil at different depths, if the ground is uneven, causing the entire device to be tilted, the movement trajectory of the sampling bucket will be tilted. As the insertion depth increases, it becomes impossible to accurately reach the designated position, and the sampling depth cannot be precisely controlled. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this utility model provides a soil sampling device for precise control of sampling depth. Rotation of the right-hand threaded rod allows the movable support to move, increasing or decreasing the distance between the support and the base. This adjustment is made according to ground conditions, ensuring the base and sampling cylinder are vertical. Since the observation rod remains vertical, during inspection, if the rod enters the groove, the device is horizontal; otherwise, the right-hand threaded rod is rotated again to ensure the base is horizontal, thus keeping the sampling cylinder and vertical rod vertical and preventing tilting. This prevents inaccurate sampling depth due to failure to reach the designated position. Furthermore, the downward movement of the limiting plate stretches the measuring tape. The distance between the limiting plate and the pushing plate corresponds to the descent distance of the sampling cylinder, allowing for precise control of sampling depth. This device is easy to use and solves the problem of uneven ground causing the entire device to tilt, resulting in a tilted trajectory of the sampling cylinder and difficulty in accurately reaching the designated position with increasing insertion depth, thus hindering precise control of sampling depth.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a soil sampling device for precisely controlling sampling depth, comprising a base, a control mechanism above the base, a lifting plate at one end of the base, and a guide rod at the bottom end of the lifting plate, the bottom end of the guide rod being fixedly connected to the base, and the lifting plate contacting the guide rod.

[0007] The control mechanism includes an electric push rod, a push plate at the bottom of the electric push rod, limiting plates at both ends of the push plate, a vertical rod fixedly mounted at the bottom middle of the push plate, a support sleeve on one side of the vertical rod, a support bracket fixedly mounted at the bottom of one end of the base, and a movable bracket at the bottom of the other end of the base. A right-threaded rod is mounted at the top middle of the movable bracket and is threadedly connected to the base. A measuring tape is mounted on one side of the push plate and is fixedly connected to the lifting plate.

[0008] Preferably, a sampling tube is fixedly provided at the bottom end of the vertical rod, and a moving plate is provided inside the top end of the sampling tube, with the moving plate in contact with the inner wall of the sampling tube.

[0009] Preferably, a round rod is fixedly provided on the top of the motion plate, the top end of the round rod extends into the interior of the sampling cylinder, and a connecting spring is provided around the outer side of the round rod.

[0010] Preferably, a fixed vertical rod is provided on the side of the electric push rod away from the measuring tape, and the fixed vertical rod passes through the push plate and the limiting plate in sequence.

[0011] Preferably, the bottom end of the support sleeve is provided with a left threaded rod, and the left threaded rod is threadedly connected to the support sleeve. The top end of the left threaded rod is provided with a connecting rod. There are two limiting plates, and the two limiting plates are fixedly connected by the connecting rod.

[0012] Preferably, the top of both ends of the movable bracket is provided with a support rod, and the support rod passes through the base and contacts the base.

[0013] Preferably, an observation rod is provided on the front of the base, and a groove is provided on the side surface of the base near the observation rod.

[0014] Preferably, a weight is fixedly provided on both sides of the bottom end of the observation rod, and there are multiple weights. The width of the groove is adapted to the width of the observation rod.

[0015] Preferably, a telescopic rod is provided inside the groove, the telescopic rod passes through the observation rod and is in contact with the observation rod. Beneficial effects

[0016] This invention provides a soil sampling device for precisely controlling sampling depth. Compared with the prior art, it has the following advantages:

[0017] 1. This soil sampling device, which precisely controls sampling depth, allows the movable support to move by rotating the right threaded rod. This allows the distance between the movable support and the base to be increased or decreased, and can be adjusted according to the ground conditions. It ensures that the base and sampling cylinder are in a vertical position. Because the observation rod is always vertical, during inspection, if the observation rod can enter the groove, it is in a horizontal position. If not, rotate the right threaded rod again to ensure the base is horizontal, so that the sampling cylinder and the vertical rod are also in a vertical position, preventing tilting and ensuring accurate sampling depth. Furthermore, the downward movement of the limiting plate can stretch the measuring tape. The distance between the limiting plate and the pushing plate is the distance the sampling cylinder descends, allowing for precise control of the sampling depth and making it convenient to use.

[0018] 2. This soil sampling device, which precisely controls the sampling depth, moves the moving plate downwards by pressing down the round rod. This pushes the soil under the moving plate, removes the soil, cleans the inner wall of the sampling cylinder, and facilitates cleaning the bottom surface of the moving plate, making subsequent operations easier. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a three-dimensional view of the overall structure of this utility model;

[0021] Figure 3 This is a bottom view of the overall structure of this utility model;

[0022] Figure 4 For the present utility model Figure 3 Enlarged view of part A in the image;

[0023] Figure 5 This is a cross-sectional view of the sampling cylinder of this utility model;

[0024] Figure 6 For the present utility model Figure 1 Enlarged view of part B in the image.

[0025] In the diagram: 1. Base; 2. Control mechanism; 21. Electric push rod; 22. Push plate; 23. Limiting plate; 24. Vertical rod; 25. Support sleeve; 26. Support bracket; 27. Movable bracket; 28. Right threaded rod; 29. ​​Measuring tape; 210. Fixed vertical rod; 211. Left threaded rod; 212. Connecting rod; 213. Observation rod; 214. Groove; 215. Weight block; 216. Telescopic rod; 3. Guide rod; 4. Lifting plate; 5. Sampling cylinder; 51. Moving plate; 52. Round rod. Detailed Implementation

[0026] 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.

[0027] Please see Figure 1-4 6. This utility model provides a technical solution: a soil sampling device for precise control of sampling depth, including a base 1, a control mechanism 2 above the base 1, a lifting plate 4 at one end of the base 1, and a guide rod 3 at the bottom end of the lifting plate 4. The bottom end of the guide rod 3 is fixedly connected to the base 1, the lifting plate 4 is in contact with the guide rod 3, and the lifting plate 4 is fixedly connected to the base 1 by screws.

[0028] The control mechanism 2 includes an electric push rod 21, a push plate 22 at the bottom of the electric push rod 21, a limiting plate 23 at both ends of the push plate 22, a vertical rod 24 fixedly installed at the bottom middle of the push plate 22, a support sleeve 25 on one side of the vertical rod 24, a support bracket 26 fixedly installed at the bottom of one end of the base 1, and a movable bracket 27 installed below the other end of the base 1. A right threaded rod 28 is installed at the top middle of the movable bracket 27 and is threadedly connected to the base 1. A measuring tape 29 is installed on one side of the push plate 22 and is fixedly connected to the lifting plate 4.

[0029] A fixed vertical rod 210 is provided on the side of the electric push rod 21 away from the measuring tape 29. The fixed vertical rod 210 passes through the push plate 22 and the limiting plate 23 in sequence. A left threaded rod 211 is provided at the bottom end of the support sleeve 25, and the left threaded rod 211 is threadedly connected to the support sleeve 25. A connecting rod 212 is provided at the top end of the left threaded rod 211. There are two limiting plates 23, which are fixedly connected by the connecting rod 212. The left threaded rod 211 allows the rotating support sleeve 25 to move, and the top end of the support sleeve 25 is connected to one of the limiting plates 23, allowing the limiting plate 23 to move downward together. The two limiting plates 23 are fixed by the connecting rod 212, allowing the two limiting plates 23 to move downward together, which improves efficiency and allows the push plate 22 and the limiting plate 23 to move along the fixed vertical rod 210, enabling linear movement.

[0030] Both ends of the movable support 27 are equipped with support rods at their top, which penetrate the base 1 and contact it. An observation rod 213 is located on the front of the base 1. A groove 214 is provided on the surface of the base 1 near the observation rod 213. Multiple weights 215 are fixedly installed on both sides of the bottom end of the observation rod 213. The width of the groove 214 matches the width of the observation rod 213. A telescopic rod 216 is installed inside the groove 214, penetrating and contacting the observation rod 213. Because the telescopic rod 216 penetrates and contacts the observation rod 213, and because the observation rod 213 is fixed with weights 215, it allows for observation... The observation rod 213 is always in a vertical position to facilitate subsequent checks on whether the base 1 is in a horizontal position. During the check, the length of the telescopic rod 216 is reduced to decrease the distance between the observation rod 213 and the base 1. Since the observation rod 213 is in a vertical position and the width of the groove 214 matches the width of the observation rod 213, if the observation rod 213 can enter the groove 214, it is in a horizontal position. If not, the right threaded rod 28 is rotated again for adjustment to ensure that the base 1 is in a horizontal position, so that the sampling cylinder 5 and the vertical rod 24 are also in a vertical position and will not tilt, preventing the inability to reach the specified position and resulting in inaccurate sampling depth.

[0031] Please see Figure 1 and 5A sampling cylinder 5 is fixedly installed at the bottom of the vertical rod 24. A moving plate 51 is installed inside the top of the sampling cylinder 5, and the moving plate 51 is in contact with the inner wall of the sampling cylinder 5. A round rod 52 is fixedly installed at the top of the moving plate 51, and the top of the round rod 52 extends into the interior of the sampling cylinder 5. A connecting spring is arranged around the outside of the round rod 52. Pressing the round rod 52 down causes the moving plate 51 to move down, which can push the soil under the moving plate 51, remove the soil, clean the inner wall of the sampling cylinder 5, and facilitate the cleaning of the bottom surface of the moving plate 51, which is convenient for subsequent operations.

[0032] During operation, the rod is placed at the sampling location, and the right-hand threaded rod 28 is rotated. Since the right-hand threaded rod 28 is threadedly connected to the base 1, the rotating rod 28 moves via the base 1, causing the lower movable support 27 to move, and simultaneously moving the support rod. This allows the distance between the movable support 27 and the base 1 to increase or decrease, adjustable according to ground conditions. Adjusting the base 1 ensures it remains level. After adjustment, because the telescopic rod 216 passes through and contacts the observation rod 213, and the observation rod 213 is fixed with a weight 215, the observation rod 213 remains vertical, facilitating subsequent checks to ensure the base 1 is level. During inspection, the length of the telescopic rod 216 is reduced, thus decreasing the distance between the observation rod 213 and the base 1. Since the observation rod 213 is in a vertical position and the width of the groove 214 matches the width of the observation rod 213, if the observation rod 213 can fit into the groove 214, it is in a horizontal position. If not, the right-hand threaded rod 28 is rotated again for adjustment to ensure that the base 1 is in a horizontal position, so that the sampling cylinder 5 and the vertical rod 24 are also in a vertical position and will not tilt, preventing the inability to reach the designated position and resulting in inaccurate sampling depth. After the movable bracket 27 is adjusted, the support sleeve 25 is rotated, and the top of the support sleeve 25 rotates with the limiting plate 23. The moving connection allows the support sleeve 25 to rotate downwards via the left threaded rod 211, causing the upper limiting plate 23 to move simultaneously. The two limiting plates 23 are fixed by the connecting rod 212, allowing them to move downwards together along the fixed vertical rod 210, enabling linear movement. The ruler inside the measuring tape 29 is fixed to the limiting plate 23, allowing for stretching of the measuring tape 29. The measuring tape 29 indicates the distance the limiting plate 23 has descended. At this point, the push plate 22 remains stationary. The distance between the limiting plate 23 and the push plate 22 is the distance the sampling cylinder 5 has descended, allowing for precise control of the sampling depth. Subsequently, the electric push rod 21 allows the push plate 22 to move downwards. The movement of the vertical rod 24 and the sampling cylinder 5 downwards allows for sampling. As the pushing plate 22 moves downwards, the distance between it and the limiting plate 23 decreases, preventing further downward movement upon contact and achieving precise control. To remove the soil from the sampling cylinder 5, the screws on the lifting plate 4 are removed, allowing the lifting plate 4 to move upwards along the guide rod 3, increasing the distance between the sampling cylinder 5 and the ground. Pressing the round rod 52 downwards causes the moving plate 51 to move downwards, pushing the soil below the moving plate 51 to remove it. This also cleans the inner wall of the sampling cylinder 5 and facilitates cleaning the bottom surface of the moving plate 51, simplifying subsequent operations.

[0033] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

Claims

1. A soil sampling device for precise control of sampling depth, comprising a base (1), characterized in that: A control mechanism (2) is provided above the base (1). A lifting plate (4) is provided at the top of one end of the base (1), and a guide rod (3) is provided at the bottom end of the lifting plate (4). The bottom end of the guide rod (3) is fixedly connected to the base (1), and the lifting plate (4) is in contact with the guide rod (3). The control mechanism (2) includes an electric push rod (21), a push plate (22) is provided at the bottom of the electric push rod (21), a limiting plate (23) is provided at the bottom of both ends of the push plate (22), a vertical rod (24) is fixedly provided at the bottom of the middle of the push plate (22), a support sleeve (25) is provided on one side of the vertical rod (24), a support bracket (26) is fixedly provided at the bottom of one end of the base (1), and a movable bracket (27) is provided below the other end of the base (1). A right threaded rod (28) is provided at the top of the middle of the movable bracket (27), and the right threaded rod (28) is threadedly connected to the base (1). A measuring tape (29) is provided on one side of the push plate (22), and the measuring tape (29) is fixedly connected to the lifting plate (4).

2. The soil sampling device for precisely controlling sampling depth according to claim 1, characterized in that: A sampling tube (5) is fixedly installed at the bottom end of the vertical rod (24), and a moving plate (51) is installed inside the top end of the sampling tube (5), and the moving plate (51) is in contact with the inner wall of the sampling tube (5).

3. The soil sampling device for precisely controlling sampling depth according to claim 2, characterized in that: A round rod (52) is fixedly installed on the top of the motion plate (51). The top end of the round rod (52) extends into the interior of the sampling cylinder (5). A connecting spring is arranged around the outside of the round rod (52).

4. The soil sampling device for precisely controlling sampling depth according to claim 1, characterized in that: The electric push rod (21) is provided with a fixed vertical rod (210) on the side away from the measuring tape (29), and the fixed vertical rod (210) passes through the push plate (22) and the limiting plate (23) in sequence.

5. A soil sampling device for precisely controlling sampling depth according to claim 1, characterized in that: The bottom end of the support sleeve (25) is provided with a left threaded rod (211), and the left threaded rod (211) is threadedly connected to the support sleeve (25). The top end of the left threaded rod (211) is provided with a connecting rod (212). There are two limiting plates (23), and the two limiting plates (23) are fixedly connected by the connecting rod (212).

6. A soil sampling device for precisely controlling sampling depth according to claim 1, characterized in that: The top of both ends of the movable bracket (27) are provided with support rods, and the support rods pass through the base (1) and are in contact with the base (1).

7. A soil sampling device for precisely controlling sampling depth according to claim 1, characterized in that: An observation rod (213) is provided on the front of the base (1), and a groove (214) is provided on the side surface of the base (1) near the observation rod (213).

8. A soil sampling device for precisely controlling sampling depth according to claim 7, characterized in that: The bottom of the observation rod (213) is fixedly provided with weight blocks (215) on both sides, and there are multiple weight blocks (215). The width of the groove (214) is adapted to the width of the observation rod (213).

9. A soil sampling device for precisely controlling sampling depth according to claim 7, characterized in that: A telescopic rod (216) is provided inside the groove (214), the telescopic rod (216) passes through the observation rod (213) and is in contact with the observation rod (213).

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