Portable forest soil multi-point sampling device and sampling method thereof

Abstract

The invention relates to the technical field of soil sampling, in particular to a portable forest soil multi-point sampling device and a sampling method thereof.The portable forest soil multi-point sampling device comprises a holding mechanism, a mounting mechanism, a sampling mechanism, a sampling pipe fitting and a sealing piece; the holding mechanism is provided with a handheld cross rod for people to hold and use, and a driving cylinder is mounted in the holding mechanism to control the sampling mechanism to work; the mounting mechanism is mounted below the holding mechanism, and a sampling opening is formed in the mounting mechanism and used for soil sampling; the sampling mechanism is mounted below the mounting mechanism; the sampling mechanism is controlled by the holding mechanism to realize digging and sampling work; the sampling pipe fitting is mounted on the mounting mechanism, and is used for collecting and storing the collected soil sample for detection; the sealing element is mounted on the sampling pipe fitting, the sampling pipe fitting is taken out from the mounting mechanism after being collected, and the sealing element is mounted on the sampling pipe fitting for sealing.

Description

Technical Field

[0001] The invention relates to the technical field of soil sampling, and in particular to a portable forest soil multi-point sampling device and a sampling method thereof. Background Art

[0002] Forest soil sampling is an important ecological research work that helps scientists understand the composition, nutrients and microbial activity of soil to assess forest health and ecosystem function. The following are the general steps for forest soil sampling: Select sampling points: According to the research objectives, divide the representative sampling area, usually choose different vegetation types or different terrain areas. Use random sampling, systematic sampling or stratified sampling methods to ensure the representativeness of the sample. Determine the sampling depth: Soil samples are usually collected in layers, such as 0-10 cm, 10-20 cm, etc. This helps to analyze the physical and chemical properties of different soil layers. Collect samples: Use a soil drill, soil sampler or shovel to collect a sufficient amount of soil at each sampling point. Try to avoid contaminating the soil when sampling (for example, do not touch the sample, avoid sweat or tool contamination). Put the sample in a clean plastic bag or sample bag and mark it with information such as date, location, depth, etc. Soil treatment and storage: Send the soil to the laboratory as soon as possible after sampling, or perform appropriate preservation treatment. If you need to test the moisture content, you can dry the sample in the laboratory or put the sample in a sealed bag and refrigerate it. Laboratory analysis: In the laboratory, the physical and chemical properties of the soil samples are measured (such as pH value, organic matter content, mineral element content, etc.). Soil microbial analysis (such as DNA extraction and sequencing) can understand the structure and diversity of microbial populations in the soil; Data recording and analysis: All experimental results are recorded and data analysis is performed. Statistical software is usually used to process the data to observe the differences in soil characteristics in different locations and depths. Soil sampling requires meticulous records and standardized operations to avoid cross contamination to ensure the accuracy and scientificity of the experimental data.

[0003] Forest soil sampling usually requires some professional equipment and tools to ensure the integrity and accuracy of the sample. The following are commonly used forest soil sampling devices: Ring knife soil auger: suitable for collecting shallow soil samples, generally used to determine soil density and water content; spiral soil auger: usually used to collect deeper soil samples, which can easily penetrate into the 20-100 cm soil layer. Ring knife casing: casing soil auger is used to cut cylindrical soil blocks in the sample area for measuring physical properties such as volume and density; soil layer sampler: used for layered sampling from the soil profile. The device has layered casings of different depths, so that samples can be taken layer by layer according to different soil layers. Soil sampler (tube sampler): Tube sampler is a columnar device suitable for collecting soil samples in different soil layers. They usually have scales to determine the sampling depth. Soil profile knife: Soil profile knife is used to cut and expose the soil profile, help observe physical properties such as soil structure, texture and color, and provide a clear profile for layered sampling.

[0004] The existing forest soil sampling devices and methods are no different from general soil sampling, and are even selected from general soil sampling tools, resulting in complicated sampling steps and more procedures in sampling, which is not suitable for multi-point sampling scenarios; and during use, the existing forest soil sampling devices need to send the collected soil samples from the sampling tool into the sampling bottle, which will inevitably cause a part of the residual soil to remain on the sampling tool. During the forest sampling process, the sampling tool cannot be cleaned very conveniently, which will lead to inaccuracy in subsequent sampling.

[0005] In view of the above situation, in order to overcome the above technical problems, the present invention designs a portable forest soil multi-point sampling device and a sampling method thereof, which solves the above technical problems. Summary of the invention

[0006] The technical purpose to be achieved by the present invention is to design a portable forest soil multi-point sampling device and a sampling method thereof, which optimizes the sampling procedure during the use of forest soil multi-point sampling, is easy to carry, does not cause sample residual contamination during multiple sampling processes, and ensures the accuracy of the sampling results.

[0007] In order to achieve the above technical objectives, the present invention provides the following technical solutions:

[0008] A portable forest soil multi-point sampling device with compact structure design and convenient operation is specially designed for the multi-point sampling needs of forest soil. The device includes multiple key components such as a holding mechanism, a mounting mechanism, a sampling mechanism, a sampling tube and a seal to ensure the efficiency of sample collection and the integrity of sample sealing.

[0009] The gripping mechanism is the core part of the device, equipped with a hand-held crossbar so that the operator can hold it easily. A driving cylinder is installed inside it, which can achieve accurate sample collection by controlling the working state of the sampling mechanism. The application of the driving cylinder reduces the labor intensity of manual operation, improves the efficiency and stability of sampling, is suitable for complex forest terrain, and is convenient for the operator to hold it with one hand or two hands.

[0010] The mounting mechanism is located below the holding mechanism and is tightly connected to the holding mechanism. A sampling port is provided at the bottom of the mounting mechanism, which is the entrance for soil sampling and facilitates the device to directly contact the target soil layer. The size and shape of the sampling port are optimized to adapt to different types of soil, ensure the accuracy of sampling, and reduce the risk of mixed contamination of samples.

[0011] The sampling mechanism is located at the bottom of the mounting mechanism, and works together with the holding mechanism and the mounting mechanism to complete the soil excavation and collection work. During the sampling process, the sampling mechanism will effectively sample the target soil layer according to the control instructions of the driving cylinder. The mechanism can penetrate into different depths in the soil, making it easy for the operator to collect multi-layer samples, and is suitable for ecological research work that requires layered analysis.

[0012] The sampling tube is installed above the mounting mechanism as a storage medium for the collected samples. The design of the sampling tube facilitates the collection of soil samples while maintaining the integrity of the samples, thus avoiding sample loss or dispersion. After the sampling work is completed, the sampling tube is directly connected to the mounting mechanism to stably store the collected soil samples and prevent deformation or damage of the samples caused by external forces.

[0013] In addition, a seal is installed above the sampling tube to seal the collected sample. When the sample is collected, the sampling tube can be removed from the installation mechanism and the sample can be sealed and preserved with a seal to ensure that the soil samples in each layer during the sampling process will not be contaminated or affected by environmental factors such as air and moisture. This sealing design is particularly important to prevent the volatilization and contamination of sample components and provide accurate soil data for subsequent experimental analysis.

[0014] The holding mechanism consists of a straight rod, a handheld crossbar, a start button and a drive cylinder. The overall design is easy to operate and carry. A handheld crossbar is installed on the top of the straight rod for the operator to easily hold with his hand, ensuring that the device is stable and reliable during use. The start button is located at the upper end of the straight rod, which is convenient for the operator to start or stop the sampling process at any time. A drive cylinder is installed inside the straight rod. The sampling action is controlled by the electrical connection between the start button and the drive cylinder, which can quickly complete soil collection and save time and effort. The drive cylinder not only improves the sampling efficiency, but also reduces the difficulty of manual operation, so that the device can still work stably and efficiently in complex outdoor environments.

[0015] The holding mechanism is also equipped with a telescopic rod, a telescopic block and matching holes to enhance the adaptability of the device and the flexibility of sampling. The telescopic rod is fixed to the output end of the driving cylinder. Through the control of the driving cylinder, the telescopic rod can move up and down to adjust the sampling depth. The lower end of the telescopic rod is connected to a concave telescopic block, so that the device can still sample stably under different soil hardness conditions. The concave structure of the telescopic block increases the contact surface with the soil, ensuring the stability and uniformity of the sampling process. Matching holes are opened on both sides of the telescopic block. These holes are used to connect other sampling components or adjust the angle of the sampling device to adapt to various terrain requirements, thereby achieving more accurate soil collection.

[0016] The mounting mechanism consists of a mounting plate, a telescopic hole, a sampling block, an extension block and a fixed bracket, which is designed to provide stable structural support and precise sampling position. The mounting plate is located below the holding mechanism and is tightly connected to the holding mechanism to ensure the stability of the entire device. A telescopic hole is provided in the center of the mounting plate, so that the sampling device can be telescopically adjusted to adjust the sampling depth during use and flexibly adapt to different soil conditions. Sampling blocks are installed on both sides of the telescopic hole. The setting of these sampling blocks not only ensures the accuracy of sample collection, but also improves the uniformity and stability of sampling. The extension block is installed on the inner side of the sampling block, which helps the sampling device to extend to deeper soil layers during the sampling process. Fixed brackets are installed on both sides of the extension block, which further enhances the stability of the device and supports the sampling structure to maintain balance during excavation to adapt to various terrains and soil conditions.

[0017] The sampling block consists of a sampling port, a mounting slot and a limiting slide, with a compact structure and clear functions. The sampling port is located at the top of the sampling block and serves as the entrance for soil samples, ensuring the convenience and efficiency of sample collection. The mounting slot is set below the sampling port to firmly fix the sampling block to the mounting mechanism to prevent loosening or deviation during sampling. The limiting slide is located at the bottom of the mounting slot, providing additional stable support, playing a role of limitation and guidance, ensuring that the sampling block can move stably during operation, and effectively improving the accuracy and consistency of sampling.

[0018] Setting the cross-sectional shape of the sampling port to a trapezoid and setting the height of the limiting chute to half the height of the mounting slot has the following benefits: the trapezoidal cross-section facilitates the smooth entry of the sample and reduces the problem of soil being blocked by friction during the collection process, making the sampling process smoother while reducing the possibility of soil blockage. In addition, the trapezoidal structure with a wide bottom and narrow top helps collect samples, avoid sample leakage, and improve sampling efficiency. Design of half the height of the limiting chute: The height of the limiting chute is set to half the height of the mounting slot, which can effectively limit the range of motion of the sampling block, ensuring that it remains stable during sampling and avoiding unnecessary shaking or deviation. This structural design provides better sampling accuracy while facilitating the control and protection of samples, ensuring the stability and consistency of sampling.

[0019] The sampling mechanism consists of a sampling rocker arm, a limit rod, a matching rod, a sampling spoon and a spherical concave surface, aiming to achieve efficient and accurate soil sampling. The sampling rocker arm is installed below the mounting mechanism. As a key component for driving sampling, it drives the sampling spoon to perform soil excavation through the movement of the rocker arm. The limit rod and the matching rod are respectively fixed in the holding mechanism and the mounting mechanism to ensure that the relative positions of the components of the sampling mechanism remain stable during the sampling process, effectively reduce the offset of the device, and improve the sampling accuracy. The sampling spoon is connected to the bottom of the sampling rocker arm. The structure is optimized to effectively collect samples and reduce soil loss when excavating the soil. The spherical concave surface under the spoon provides additional stable support, so that the spoon can maintain balance at different angles and depths during the sampling process. The design improves the stability and flexibility of the sampling mechanism as a whole, so that the device can still complete the sampling task efficiently and stably in complex field environments.

[0020] The sampling tube is composed of a sampling tube cover, an arc-shaped depression, a sampling sleeve and a limiting rib. The overall design is exquisite and convenient for collecting, protecting and transmitting soil samples. The sampling tube cover is located on the side of the sampling tube, which plays a role of protection and sealing, ensuring that the soil sample is not contaminated by the outside world, and is convenient for transportation and storage after the sampling is completed. The arc-shaped depression is arranged on the side of the sampling tube cover, providing a handheld or fixed groove, so that the operator can hold the tube more firmly during sampling, and enhance the operational stability of the device. The sampling sleeve is also located on the side of the sampling tube cover, and its function is to collect and store the collected soil samples, ensure that the samples maintain integrity, and avoid damage or loss of the samples during the collection process. The limiting rib is installed on the outer surface of the sampling sleeve, and its height is consistent with the height of the limiting slide. The design is reasonable and strict, ensuring that the sampling tube can be accurately positioned and firmly connected in the installation mechanism. A gap is left in the middle of the limiting rib, which is convenient for quickly disassembling the sampling sleeve after the sampling is completed, which not only ensures the firmness of the structure, but also enhances the convenience of disassembly.

[0021] The seal consists of a sealing cover, a sealing sleeve, a fixing groove and a guide chute, which are designed to ensure the integrity of the collected soil sample and prevent contamination. The sealing cover is located on the side of the seal, which plays a role of sealing and protection, ensuring that the sample is not affected by the external environment during storage and transportation. The sealing sleeve is installed on the side of the sealing cover and is tightly combined with the sealing cover to provide additional protection to prevent sample leakage. The fixing groove is opened on the inner surface of the sealing sleeve to firmly fix the sample and ensure that the soil will not be lost due to vibration or tilt after sampling. The guide chute is located below the fixing groove to facilitate the operation of the seal and help the operator to install and remove it more smoothly. Through this series of designs, the seal not only improves sample protection, but also ensures efficient and convenient operation.

[0022] A portable forest soil multi-point sampling method, which is used in conjunction with the above-mentioned portable forest soil multi-point sampling device; the steps of the method are as follows:

[0023] S1: The sampling personnel hold the sampling tube cover through the arc-shaped groove, press the sampling tube into the installation mechanism from the installation groove through the cooperation of the limiting rib and the limiting slide groove, and then rotate the sampling tube to fix the sampling tube in the installation mechanism;

[0024] S2: The sampling personnel repeat the operation in step S1 for the installation slot on the other side to complete the preparation work for the installation of the sampling tube;

[0025] S3: The sampling personnel hold the handheld horizontal bar with both hands and press it down at the location where sampling is required, so that the vertical sampling mechanism enters deep into the soil and the mounting plate partially enters under the ground;

[0026] S4: The sampling personnel presses the start button, and the driving cylinder electrically connected to it starts to work. The sampling rocker arm, driven by the telescopic rod, digs the soil upwards and pushes it into the sampling port;

[0027] S5: Rotate and take out the sampling tube, use the guide groove on the seal to align with the limiting rib, press the seal and the sampling tube hard to complete the sampling work at one place;

[0028] S6: Repeat the above steps S1-S5 at other locations in the forest where sampling is required.

[0029] The beneficial effects of the present invention are as follows:

[0030] 1. During the use of multi-point sampling of forest soil, the present invention significantly improves the efficiency and accuracy of sampling by optimizing the sampling procedure and design. Through precise design and efficient operation process, the time required for soil sampling is reduced, so that the operator can complete multi-point sampling quickly and efficiently. This optimization procedure not only improves work efficiency, but also obtains more data samples in a short time, thereby more comprehensively reflecting the soil characteristics of the study area. The portability of the device makes it more convenient to operate in the field environment, especially in complex terrain or remote areas, which is convenient for the operator to carry and use. This feature enhances the applicability of the equipment and is suitable for soil collection needs in a variety of environments and conditions. Through reasonable design, the present invention ensures that there will be no sample residues during multiple sampling processes, reducing the risk of cross-contamination of samples. This feature is very important, especially when conducting comparative analysis or long-term monitoring, it can effectively ensure the purity and comparability of samples.

[0031] 2. The present invention optimizes the design and operation process, so that the sampling device can better control the depth and position during sampling, thereby ensuring that the samples obtained are highly representative and reflect the true characteristics of the soil. This accuracy is crucial for subsequent experimental analysis and ecological assessment, and can provide a scientific basis for forest soil management and protection. The design of the present invention takes into account the characteristics of different types of soil, so that the equipment can perform well in different environments. Whether in drought, moisture, or soft and hard soil conditions, sampling can be effectively carried out, which broadens the application range of the equipment. Due to the standardization and accuracy of the device design, good repeatability can be achieved in subsequent sampling work, which is of great significance to scientific research, environmental monitoring, land management and other fields. The application of the present invention in multi-point sampling of forest soil not only improves the convenience and efficiency of operation, but also makes significant contributions to ensuring the accuracy and representativeness of samples, providing reliable technical support for soil research. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] The above and other aspects of the present invention will now be described, by way of example only, with reference to the accompanying drawings, in which:

[0034] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0035] Figure 2It is a structural schematic diagram of the main components of the present invention;

[0036] Figure 3 It is a schematic diagram of the structure of the holding mechanism of the present invention;

[0037] Figure 4 It is a schematic diagram of the structure of the installation mechanism of the present invention;

[0038] Figure 5 is a partial cross-sectional view of the sampling block of the present invention;

[0039] Figure 6 It is a structural schematic diagram of the sampling mechanism of the present invention;

[0040] Figure 7 It is a structural schematic diagram of the sampling tube of the present invention;

[0041] Figure 8 It is a schematic structural diagram of the sealing member of the present invention.

[0042] In the figure: 1. holding mechanism; 11. straight rod; 12. hand-held horizontal bar; 13. start button; 14. driving cylinder; 15. telescopic rod; 16. telescopic block; 17. matching hole; 2. mounting mechanism; 21. mounting plate; 22. telescopic hole; 23. sampling block; 231. sampling port; 232. mounting groove; 233. limiting slide groove; 24. extension block; 25. fixed bracket; 3. sampling mechanism; 31. sampling rocker arm; 32. limiting rod; 33. matching rod; 34. sampling spoon; 35. spherical concave surface; 4. sampling tube; 41. sampling tube cover; 42. arc-shaped depression; 43. sampling sleeve; 44. limiting rib; 5. sealing member; 51. sealing cover; 52. sealing sleeve; 53. fixing groove; 54. guide slide groove. DETAILED DESCRIPTION

[0043] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0044] like Figure 1-8 As shown, a portable forest soil multi-point sampling device has a compact structure and is easy to operate, and is specially designed for multi-point sampling of forest soil. The device includes a holding mechanism 1, a mounting mechanism 2, a sampling mechanism 3, a sampling tube 4, and a sealing member 5, etc., to ensure the efficiency of sample collection and the integrity of sample sealing.

[0045] The holding mechanism 1 is the core operating part of the device, and is equipped with a hand-held crossbar 12 so that the operator can hold it easily. A driving cylinder 14 is installed inside it, which can achieve accurate sample collection by controlling the working state of the sampling mechanism 3. The application of the driving cylinder 14 reduces the labor intensity of manual operation, improves the efficiency and stability of sampling, is suitable for complex forest terrain, and is convenient for the operator to hold it with one hand or two hands.

[0046] The mounting mechanism 2 is located below the holding mechanism 1 and is tightly connected to the holding mechanism 1. A sampling port 231 is provided at the bottom of the mounting mechanism 2, which is the entrance for soil sampling, so that the device can directly contact the target soil layer. The size and shape of the sampling port 231 are optimized to adapt to different types of soil, ensure the accuracy of sampling, and reduce the risk of mixed contamination of samples.

[0047] The sampling mechanism 3 is located at the bottom of the mounting mechanism 2, and cooperates with the holding mechanism 1 and the mounting mechanism 2 to complete the excavation and collection of soil. During the sampling process, the sampling mechanism 3 will effectively sample the target soil layer according to the control instructions of the driving cylinder 14. The mechanism can penetrate into different depths in the soil, making it easy for the operator to collect multi-layer samples, and is suitable for ecological research work that requires layered analysis.

[0048] The sampling tube 4 is installed above the mounting mechanism 2 as a storage medium for the collected samples. The design of the sampling tube 4 is convenient for collecting soil samples and can maintain the integrity of the samples, thereby preventing the samples from being lost or dispersed. After the sampling work is completed, the sampling tube 4 is directly connected to the mounting mechanism 2 to stably store the collected soil samples and prevent deformation or damage of the samples caused by external forces.

[0049] In addition, a seal 5 is installed above the sampling tube 4 to seal the collected sample. When the sample collection is completed, the sampling tube 4 can be removed from the mounting mechanism 2, and the sample can be sealed and preserved with the seal 5 to ensure that the soil samples of each layer during the sampling process will not be contaminated or affected by environmental factors such as air and moisture. This sealing design is particularly important, which can prevent the volatilization and contamination of sample components and provide accurate soil data for subsequent experimental analysis.

[0050] like Figure 3As shown, the holding mechanism 1 is composed of a straight rod 11, a hand-held cross bar 12, a start button 13 and a drive cylinder 14, and the overall design is easy to operate and carry. A hand-held cross bar 12 is installed on the top of the straight rod 11 for the operator to easily hold with his hand, ensuring that the device is stable and reliable during use. The start button 13 is located at the upper end of the straight rod 11, which is convenient for the operator to start or stop the sampling process at any time. The drive cylinder 14 is installed inside the straight rod 11, and the sampling action is controlled by the electrical connection between the start button 13 and the drive cylinder 14, so that soil collection can be completed quickly, saving time and effort. The drive cylinder 14 not only improves the sampling efficiency, but also reduces the difficulty of manual operation, so that the device can still work stably and efficiently in complex outdoor environments.

[0051] The holding mechanism 1 is also equipped with a telescopic rod 15, a telescopic block 16 and a matching hole 17 to enhance the adaptability of the device and the flexibility of sampling. The telescopic rod 15 is fixed to the output end of the driving cylinder 14. Through the control of the driving cylinder 14, the telescopic rod 15 can move up and down to adjust the sampling depth. The lower end of the telescopic rod 15 is connected to a concave telescopic block 16, so that the device can still stably sample under different soil hardness conditions. The concave structure of the telescopic block 16 increases the contact surface with the soil, ensuring the stability and uniformity of the sampling process. Matching holes 17 are opened on both sides of the telescopic block 16. These holes are used to connect other sampling components or adjust the angle of the sampling device to adapt to various terrain requirements, thereby achieving more accurate soil collection.

[0052] like Figure 4 As shown, the mounting mechanism 2 is composed of a mounting plate 21, a telescopic hole 22, a sampling block 23, an extension block 24 and a fixed bracket 25, which is intended to provide stable structural support and precise sampling position. The mounting plate 21 is located below the holding mechanism 1 and is tightly connected to the holding mechanism 1 to ensure the stability of the entire device. A telescopic hole 22 is provided in the center of the mounting plate 21, so that the sampling device can be telescopically adjusted to adjust the sampling depth when in use, and flexibly adapt to different soil conditions. Sampling blocks 23 are installed on both sides of the telescopic hole 22. The setting of these sampling blocks 23 not only ensures the accuracy of sample collection, but also improves the uniformity and stability of sampling. The extension block 24 is installed on the inner side of the sampling block 23, which helps the sampling device to extend to a deeper soil layer during the sampling process. Fixed brackets 25 are installed on both sides of the extension block 24, which further enhances the stability of the device and supports the sampling structure to maintain balance during the excavation process to adapt to various terrains and soil conditions.

[0053] like Figure 5As shown, the sampling block 23 is composed of a sampling port 231, a mounting groove 232 and a limiting slide groove 233, and has a compact structural design and clear functions. The sampling port 231 is located at the top of the sampling block 23, serving as the entrance for soil samples, ensuring the convenience and efficiency of sample collection. The mounting groove 232 is arranged below the sampling port 231, and is used to firmly fix the sampling block 23 to the mounting mechanism 2 to prevent loosening or displacement during the sampling process. The limiting slide groove 233 is located at the lower part of the mounting groove 232, providing additional stable support, playing a role of limitation and guidance, ensuring that the sampling block can move stably during operation, and effectively improving the accuracy and consistency of sampling.

[0054] Setting the cross-sectional shape of the sampling port 231 to a trapezoid and setting the height of the limiting chute 233 to half the height of the mounting slot 232 has the following advantages: the trapezoidal cross-section facilitates the smooth entry of the sample and reduces the problem of soil being blocked by friction during the collection process, making the sampling process smoother while reducing the possibility of soil blockage. In addition, the trapezoidal structure, which is wide at the bottom and narrow at the top, helps collect samples, avoids sample leakage, and improves sampling efficiency. The design of half the height of the limiting chute 233: The height of the limiting chute 233 is set to half the height of the mounting slot 232, which can effectively limit the range of motion of the sampling block 23, ensuring that it remains stable during sampling and avoiding unnecessary shaking or deviation. This structural design provides better sampling accuracy, while facilitating the control and protection of samples and ensuring the stability and consistency of sampling.

[0055] like Figure 6 As shown, the sampling mechanism 3 is composed of a sampling rocker arm 31, a limiting rod 32, a matching rod 33, a sampling scoop 34 and a spherical concave surface 35, which is intended to achieve efficient and accurate soil sampling. The sampling rocker arm 31 is installed below the mounting mechanism 2. As a key component for driving sampling, the sampling scoop 34 is driven by the movement of the rocker arm to perform soil excavation. The limiting rod 32 and the matching rod 33 are respectively fixed in the holding mechanism 1 and the mounting mechanism 2 to ensure that the components of the sampling mechanism 3 maintain a stable relative position during the sampling process, effectively reduce the offset of the device, and improve the sampling accuracy. The sampling scoop 34 is connected to the bottom of the sampling rocker arm 31, and the structure is optimized so that samples can be effectively collected and soil loss can be reduced when excavating the soil. The spherical concave surface 35 below the scoop provides additional stable support, so that the scoop can maintain balance at different angles and depths during the sampling process. This design improves the stability and flexibility of the sampling mechanism 3 as a whole, so that the device can still complete the sampling task efficiently and stably in complex outdoor environments.

[0056] like Figure 7As shown, the sampling tube 4 is composed of a sampling tube cover 41, an arc-shaped recess 42, a sampling sleeve 43 and a limiting rib 44. The overall design is exquisite and convenient for collecting, protecting and transmitting soil samples. The sampling tube cover 41 is located on the side of the sampling tube 4, which plays a role of protection and sealing, ensuring that the soil sample is not contaminated by the outside world, and is convenient for transportation and storage after the sampling is completed. The arc-shaped recess 42 is arranged on the side of the sampling tube cover 41, providing a handheld or fixed groove, so that the operator can hold the tube more firmly during sampling, thereby enhancing the operational stability of the device. The sampling sleeve 43 is also located on the side of the sampling tube cover 41, and its function is to collect and store the collected soil samples, ensure that the samples maintain integrity, and avoid damage or loss of the samples during the collection process. The limiting rib 44 is installed on the outer surface of the sampling sleeve 43, and its height is consistent with the height of the limiting slide 233. The design is reasonable and strict, ensuring that the sampling tube 4 can be accurately positioned and firmly connected in the installation mechanism 2. A gap is left in the middle of the limiting rib 44 to facilitate quick disassembly of the sampling sleeve 43 after sampling, which not only ensures the firmness of the structure but also enhances the convenience of disassembly.

[0057] like Figure 8 As shown, the seal 5 is composed of a sealing cover 51, a sealing sleeve 52, a fixing groove 53 and a guide chute 54, which is intended to ensure the integrity of the collected soil sample and prevent contamination. The sealing cover 51 is located on the side of the seal 5, and plays a role of sealing and protection, ensuring that the sample is not affected by the external environment during storage and transportation. The sealing sleeve 52 is installed on the side of the sealing cover 51 and is tightly combined with the sealing cover 51 to provide additional protection to prevent sample leakage. The fixing groove 53 is opened on the inner surface of the sealing sleeve 52 to firmly fix the sample and ensure that the soil will not be lost due to vibration or tilt after sampling. The guide chute 54 is arranged below the fixing groove 53 to facilitate the operation of the seal 5 and help the operator to install and disassemble more smoothly. Through this series of designs, the seal 5 improves sample protection while ensuring efficient and convenient operation.

[0058] A portable forest soil multi-point sampling method, which is used in conjunction with the above-mentioned portable forest soil multi-point sampling device; the steps of the method are as follows:

[0059] S1: The sampling personnel holds the sampling tube cover 41 through the arc-shaped groove, presses the sampling tube 4 into the installation mechanism 2 from the installation groove 232 through the cooperation of the limiting rib 44 and the limiting slide groove 233, and then rotates the sampling tube 4 to fix the sampling tube 4 in the installation mechanism 2;

[0060] S2: The sampling personnel repeat the operation in step S1 for the installation slot 232 on the other side to complete the preparation work for installing the sampling tube 4;

[0061] S3: The sampling personnel hold the handheld horizontal bar 12 with both hands and press it down at the location where sampling is required, so that the vertical sampling mechanism 3 enters deep into the soil and the mounting plate 21 partially enters under the ground;

[0062] S4: The sampling personnel presses the start button 13, and the driving cylinder 14 electrically connected thereto starts to work. The sampling rocker arm 31, driven by the telescopic rod 15, digs the soil upwards and pushes it into the sampling port;

[0063] S5: Rotate and take out the sampling tube 4, use the guide groove 54 on the seal 5 to align with the limiting rib 44, press the seal 5 and the sampling tube hard, and complete the sampling work at one place;

[0064] S6: Repeat the above steps S1-S5 at other locations in the forest where sampling is required.

[0065] During the working process of the present invention, the sampling personnel hold the sampling tube cover 41 through the arc-shaped groove, press the sampling tube 4 into the installation mechanism 2 from the installation groove 232 through the cooperation of the limiting rib 44 and the limiting slide groove 233, and then rotate the sampling tube 4 to fix the sampling tube 4 in the installation mechanism 2; the preparation work for the installation of the sampling tube 4 is completed; the sampling personnel hold the handheld cross bar 12 with both hands and press it down at the location where sampling is required, so that the vertical sampling mechanism 3 enters deep into the soil, and the mounting plate 21 partially enters under the ground; the sampling personnel presses the start button 13, and the driving cylinder 14 electrically connected to it starts to work, and the sampling rocker arm 31 digs the soil upwards driven by the telescopic rod 15 and pushes it into the sampling port; the sampling tube 4 is rotated to take out, and the guide slide groove 54 on the seal 5 is used to align with the limiting rib 44, and the seal 5 and the sampling tube are pressed hard to complete the sampling work at one place;

[0066] Various modifications to the present disclosure will be apparent to those of ordinary skill in the art, and the general principles defined herein may be applied to other variations without departing from the scope of the present disclosure. Therefore, the present disclosure is not limited to the examples and designs described herein, but should be given the widest scope consistent with the principles and novel features disclosed herein. Although one or more exemplary embodiments of the present disclosure have been described with reference to the accompanying drawings, it will be understood by those of ordinary skill in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the present disclosure as defined in the appended claims.

Claims

1. A portable forest soil multi-point sampling device, characterized in that: It comprises a holding mechanism (1), a mounting mechanism (2), a sampling mechanism (3), a sampling tube (4) and a sealing member (5); The holding mechanism (1) is provided with a hand-held crossbar (12) for a person to hold and use, and a driving cylinder (14) is installed inside the holding mechanism (1) to control the operation of the sampling mechanism (3); The mounting mechanism (2) is mounted below the holding mechanism (1), and the mounting mechanism (2) is provided with a sampling port (231) for soil sampling; The sampling mechanism (3) is installed below the mounting mechanism (2), and the sampling mechanism (3) implements excavation sampling work under the control of the holding mechanism (1); The sampling tube (4) is installed on the mounting mechanism (2), and the sampling tube (4) collects and stores the collected soil samples for testing; The sealing member (5) is installed on the sampling tube member (4). After the sampling tube member (4) is collected, it is taken out from the installation mechanism (2) and the sealing member (5) is installed on the sampling tube member (4) for sealing.

2. A portable forest soil multi-point sampling device according to claim 1, characterized in that: The holding mechanism (1) comprises a straight rod (11), a handheld crossbar (12), a start button (13) and a drive cylinder (14); A handheld cross bar (12) is installed on the top of the straight rod (11), the start button (13) is installed on the top of the straight rod (11), the drive cylinder (14) is installed inside the straight rod (11), and the drive cylinder (14) and the start button (13) are electrically connected.

3. A portable forest soil multi-point sampling device according to claim 2, characterized in that: The holding mechanism (1) further comprises a telescopic rod (15), a telescopic block (16) and a matching hole (17); The telescopic rod (15) is installed at the output end of the driving cylinder (14), the telescopic block (16) is installed at the lower end of the telescopic rod (15), the telescopic block (16) is arranged in a "concave" shape, and the matching holes (17) are opened on two side surfaces of the telescopic block (16).

4. A portable forest soil multi-point sampling device according to claim 1, characterized in that: The mounting mechanism (2) comprises a mounting plate (21), a telescopic hole (22), a sampling block (23), an extension block (24) and a fixing bracket (25); The mounting plate (21) is mounted below the holding mechanism (1); the telescopic hole (22) is opened in the middle of the mounting plate (21); the sampling block (23) is mounted on both sides of the telescopic hole (22); the extension block (24) is mounted on the inner side of the sampling block (23); and the fixing bracket (25) is mounted on both sides of the extension block (24).

5. A portable forest soil multi-point sampling device according to claim 4, characterized in that: The sampling block (23) comprises a sampling port (231), a mounting groove (232) and a limiting sliding groove (233); The sampling port (231) is provided on the upper side of the sampling block (23), the mounting groove (232) is provided on the lower side of the sampling port (231), and the limiting sliding groove (233) is provided on the lower part of the mounting groove (232).

6. A portable forest soil multi-point sampling device according to claim 5, characterized in that: The cross-sectional shape of the sampling port (231) is set to be a trapezoid, and the height value of the limiting sliding groove (233) is set to be half the height value of the installation groove (232).

7. The portable forest soil multi-point sampling device according to claim 1 is characterized in that: The sampling mechanism (3) comprises a sampling rocker arm (31), a limiting rod (32), a matching rod (33), a sampling spoon (34) and a spherical concave surface (35); The sampling rocker arm (31) is installed below the mounting mechanism (2); the limiting rod (32) and the matching rod (33) are installed in the holding mechanism (1) and the mounting mechanism (2) respectively; the sampling scoop (34) is installed below the sampling rocker arm (31); and the spherical concave surface (35) is arranged below the sampling scoop (34).

8. The portable forest soil multi-point sampling device according to claim 1, characterized in that: The sampling tube (4) comprises a sampling tube cover (41), an arc-shaped recess (42), a sampling sleeve (43) and a limiting rib (44); The sampling tube cover (41) is a side portion of the sampling tube (4); the arc-shaped recess (42) is provided on the side of the sampling tube cover (41); the sampling sleeve (43) is installed on the side of the sampling tube cover (41); the limiting rib (44) is installed on the outer surface of the sampling sleeve (43); a gap is provided in the middle of the limiting rib (44); and the height value of the limiting rib (44) and the height value of the limiting groove (233) are set to be consistent.

9. The portable forest soil multi-point sampling device according to claim 1, characterized in that: The sealing member (5) comprises a sealing cover (51), a sealing sleeve (52), a fixing groove (53) and a guide sliding groove (54); The sealing cover (51) is a side portion of the sealing member (5), the sealing sleeve (52) is installed on the side of the sealing cover (51), the fixing groove (53) is provided on the inner surface of the sealing sleeve (52), and the guiding groove (54) is provided below the fixing groove (53).

10. A portable forest soil multi-point sampling method, the method being used in conjunction with a portable forest soil multi-point sampling device according to any one of claims 1 to 9; characterized in that: The steps of the method are as follows: S1: The sampling personnel holds the sampling tube cover (41) through the arc-shaped groove, presses the sampling tube (4) into the installation mechanism (2) from the installation groove (232) through the cooperation of the limiting rib (44) and the limiting sliding groove (233), and then rotates the sampling tube (4) to fix the sampling tube (4) in the installation mechanism (2); S2: The sampling personnel repeats the operation in step S1 once for the installation slot (232) on the other side to complete the preparation work for installing the sampling tube (4); S3: The sampling personnel hold the handheld horizontal bar (12) with both hands and press it down at the location where sampling is required, so that the vertical sampling mechanism (3) enters deep into the soil and the mounting plate (21) partially enters under the ground; S4: The sampling personnel presses the start button (13), and the driving cylinder (14) electrically connected thereto starts to work. The sampling rocker arm (31) digs the soil upwards driven by the telescopic rod (15) and pushes it into the sampling port; S5: Rotate and take out the sampling tube (4), use the guide groove (54) on the sealing member (5) to align with the limiting rib (44), press the sealing member (5) and the sampling tube with force, and complete the sampling work at one place; S6: Repeat the above steps S1-S5 at other locations in the forest where sampling is required.

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