Soil microorganism sampling tool adaptive to different soil properties

Abstract

The utility model discloses a soil microorganism sampling tool adaptive to different soil properties, which comprises a mounting bracket, a pressing rod is arranged in the middle of the mounting bracket, the pressing rod penetrates through the mounting bracket, an electric push rod is arranged on one side of the mounting bracket, and the output end of the electric push rod is connected with the pressing rod through a connecting plate; a mounting frame is arranged at the bottom of the mounting bracket, a loam sampling head, a sandy soil sampling head and a clay sampling head are arranged in the mounting frame, and the loam sampling head, the sandy soil sampling head and the clay sampling head can move back and forth in the mounting frame. According to the utility model, the mounting bracket is arranged, the electric push rod is arranged on the side surface of the mounting bracket, and the electric push rod can drive the pressing rod to press downwards, so that a sandy soil sampling head, a clay sampling head or a loam sampling head can be conveniently pressed into soil through the pressing rod, and the purpose of sampling the soil is achieved. The mode is more labor-saving, and is convenient for sampling personnel to efficiently work.

Description

Technical Field

[0001] This utility model relates to the field of sampling tool technology, specifically a soil microbial sampling tool adapted to different soil properties. Background Technology

[0002] Soil microorganisms are an important component of the soil ecosystem, playing a vital role in soil fertility, plant growth, and environmental pollution remediation. To study the diversity and functions of soil microorganisms, it is usually necessary to collect and analyze them. This collection and analysis requires the use of sampling tools to gather soil samples.

[0003] In the prior art, Chinese Patent Publication No. CN216284389U discloses a sampling tool for soil microbial monitoring, including a sampling tube, a soil separating mechanism, and a positioning mechanism. The sampling tube is provided with a positioning mechanism on its outer side and has a hollow structure design. The soil separating mechanism is sleeved inside the sampling tube and includes a pressing rod, a pressing button, a pressing baffle, a connecting support rod, a mesh fixing ring, and a soil separating mesh. The upper end of the pressing rod is connected to the pressing button, and the lower end of the pressing rod is connected to the pressing baffle. The connecting support rod is installed at the lower end of the pressing baffle, the mesh fixing ring is installed at the lower end of the connecting support rod, and the soil separating mesh is fixedly installed inside the mesh fixing ring.

[0004] The sampling tools provided by the aforementioned patents enable the collection of more dispersed soil samples without tilting, providing favorable conditions for better microbial observation. However, in reality, different soils (such as sandy soil, clay, and loam) have significantly different properties. For example, sandy soil is loose and easily dispersed, making it prone to loss during sampling; clay is compact and sticky, making it difficult to penetrate and extract samples; while loam falls between the two, requiring a balance between penetration and sample integrity during sampling. Existing sampling tools, including those in the aforementioned patents, are insufficient to simultaneously sample soils with different properties, and carrying multiple different sampling tools is cumbersome. Utility Model Content

[0005] The purpose of this invention is to provide a soil microbial sampling tool that is adaptable to different soil properties, aiming to improve the problem that existing sampling tools are difficult to use for sampling different types of soil, and that carrying multiple different sampling tools is cumbersome.

[0006] This utility model is implemented as follows:

[0007] A soil microbial sampling tool adaptable to different soil properties includes a mounting bracket. A pressure rod is provided in the middle of the mounting bracket and passes through the mounting bracket. An electric push rod is provided on one side of the mounting bracket, and the output end of the electric push rod is connected to the pressure rod through a connecting plate. A mounting frame is provided at the bottom of the mounting bracket. A loam sampling head, a sand sampling head, and a clay sampling head are provided inside the mounting frame. The loam sampling head, sand sampling head, and clay sampling head can move back and forth inside the mounting frame.

[0008] Preferably, the mounting bracket has a telescopic hole through the middle, the mounting bracket has a mounting plate on the side, and the mounting plate has a mounting hole in the middle; the mounting frame has a through hole in the middle, and the top and bottom of the inner side of the mounting frame are provided with guide grooves, and the bottom of both sides of the mounting frame are provided with pedals.

[0009] Preferably, the mounting bracket has a battery at its top, handles are symmetrically arranged on both sides of the battery, and a charging slot and control button are provided on the upper surface of the battery.

[0010] Preferably, the bottom end of the pressure rod is provided with an adapter plate, and the bottom surface of the adapter plate is provided with a threaded connector; the top end of the pressure rod is provided with a rotating handle.

[0011] Preferably, the electric push rod has a stud at its bottom end, the stud passes through a mounting hole, and a pressure cap is provided at one end of the stud passing through the mounting hole; the electric push rod has a power connection wire on its side, and a power connection plug is provided at the end of the power connection wire, the power connection plug being electrically connected to the battery; the electric push rod has a telescopic rod at its output end, and a connecting post is provided at the top of the telescopic rod, with a connecting cap provided at one end of the connecting post passing through the connecting plate.

[0012] Preferably, one end of the connecting plate is provided with a rotating joint, the middle of the rotating joint is provided with a bearing, the bearing is interference-fitted with the lower pressure rod, and the other end of the connecting plate is provided with a connecting hole.

[0013] Preferably, the top of the loam sampling head, sand sampling head, and clay sampling head are all provided with threaded grooves, which are used for threaded connection of threaded heads.

[0014] Preferably, the soil sampling head has a side opening on its side, and the inner wall of the soil sampling head is frosted.

[0015] Preferably, the sand sampling head has a cylindrical hollow structure, the inner wall of the sand sampling head is frosted, and the inside of the sand sampling head is provided with a leak-proof mesh.

[0016] Preferably, the clay sampling head has a tapered cutting edge at the bottom and a smooth outer wall to reduce the friction between the clay sampling head and the soil.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This utility model features an installation bracket with an electric push rod on its side. The electric push rod drives a pressing rod to press down, facilitating the insertion of sand, clay, or loam sampling heads into the soil for sampling. This method is labor-saving and allows for efficient work by sampling personnel. The sand, clay, and loam sampling heads are all installed inside a limiting frame and can move back and forth within it, allowing sampling personnel to selectively choose the sampling head according to their needs.

[0019] 2. This utility model provides a rotating handle at the top of the pressure rod. By rotating the handle, the pressure rod can be rotated, allowing it to be threadedly connected to various sampling heads, thus facilitating the pressure rod to drive the sampling head for sampling. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the mounting bracket of this utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the pressure rod of this utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the electric push rod of this utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the connecting plate of this utility model;

[0025] Figure 6 This is a schematic diagram of the structure of the soil sampling head of this utility model;

[0026] Figure 7 This is a schematic diagram of the structure of the sand and soil sampling head of this utility model;

[0027] Figure 8 This is a schematic diagram of the structure of the clay sampling head of this utility model.

[0028] In the diagram: 1. Mounting bracket; 11. Mounting plate; 12. Mounting hole; 13. Battery; 14. Handle; 15. Control button; 16. Telescopic hole; 17. Charging slot; 18. Mounting frame; 181. Perforation; 182. Guide groove; 183. Pedal; 2. Down pressure rod; 21. Adapter plate; 22. Threaded connector; 23. Rotary handle; 3. Electric push rod; 31. Stud; 32. Pressure cap; 33. Power connection wire; 34. Power connector; 35. Telescopic rod; 36. Connecting post; 37. Connecting cap; 4. Connecting plate; 41. Rotary joint; 42. Bearing; 43. Connecting hole; 5. Soil sampling head; 51. Threaded groove; 52. Side opening; 6. Sand sampling head; 7. Clay sampling head; 71. Conical cutting edge. Detailed implementation method:

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] The following description, in conjunction with the accompanying drawings and specific embodiments, provides further details:

[0031] Example 1

[0032] like Figure 1 As shown, a soil microbial sampling tool adaptable to different soil properties includes a mounting bracket 1, which facilitates the installation of various components of the sampling tool. A pressing rod 2 is located in the middle of the mounting bracket 1, passing through the bracket 1. The pressing rod 2 facilitates pressing down the sand sampling head 6 for soil sampling. An electric push rod 3 is located on one side of the mounting bracket 1, with its output end connected to the pressing rod 2 via a connecting plate 4; the electric push rod 3 facilitates pressing down the pressing rod 2. A mounting frame 18 is located at the bottom of the mounting bracket 1, inside which a soil sampling head 5 is located. The soil sampling head 5 can move back and forth within the mounting frame 18; the mounting frame 18 facilitates the installation of the soil sampling head 5 and the carrying of various sampling heads.

[0033] like Figure 2As shown, a telescopic hole 16 is provided through the middle of the mounting bracket 1 for mounting the pressure rod 2. A mounting plate 11 is provided on the side of the mounting bracket 1, with a mounting hole 12 in the middle of the mounting plate 11; the mounting plate 11 and mounting hole 12 facilitate the connection between the mounting bracket 1 and the electric push rod 3. A through hole 181 is provided in the middle of the mounting frame 18, facilitating the insertion of the soil sampling head 5 into the soil and allowing the bottom end of the pressure rod 2 to pass through the mounting frame 18; guide grooves 182 are provided at the top and bottom of the inner side of the mounting frame 18 to guide the soil sampling head 5. Foot pedals 183 are provided on both sides of the bottom of the mounting frame 18, facilitating the operation of the entire sampling tool by stepping on the mounting frame 18. A battery 13 is provided at the top of the mounting bracket 1, facilitating the power supply to the electric push rod 3 for control and use. Handles 14 are symmetrically provided on both sides of the battery 13, facilitating the operation of the entire sampling tool. The upper surface of the battery 13 is provided with a charging slot 17 and a control button 15. The charging slot 17 is for charging the battery 13, and the control button 15 is for controlling the opening and closing of the electric push rod 3.

[0034] like Figure 3 As shown, the bottom end of the pressure rod 2 is provided with an adapter plate 21, and the bottom surface of the adapter plate 21 is provided with a threaded connector 22; the adapter plate 21 and the threaded connector 22 facilitate the installation of the soil sampling head 5. The top end of the pressure rod 2 is provided with a rotating handle 23, which facilitates the rotation of the pressure rod 2 and the threaded connection between the pressure rod 2 and the aligned soil sampling head 5.

[0035] like Figure 4 As shown, the electric actuator 3 has a stud 31 at its bottom end, which passes through the mounting hole 12. A pressure cap 32 is provided at one end of the stud 31 passing through the mounting hole 12. This structure facilitates the fixing of the electric actuator 3 to the mounting plate 11. The electric actuator 3 has a power connection wire 33 on its side, and a power connector 34 at the end of the power connection wire 33. The power connector 34 is electrically connected to the battery 13. The cooperation between the power connection wire 33 and the power connector 34 facilitates power connection between the electric actuator 3 and the battery 13, making the operation and use of the electric actuator 3 convenient. The output end of the electric actuator 3 has a telescopic rod 35, and a connecting post 36 is provided at the top of the telescopic rod 35. A connecting cap 37 is provided at one end of the connecting post 36 passing through the connecting plate 4. The telescopic rod 35, in conjunction with the connecting post 36 and the connecting cap 37, facilitates the connection between the output end of the electric actuator 3 and the connecting plate 4.

[0036] like Figure 5 As shown, one end of the connecting plate 4 is provided with a rotating joint 41, and a bearing 42 is provided in the middle of the rotating joint 41. The bearing 42 is interference-fitted with the lower pressure rod 2. This structure facilitates the connection between the connecting plate 4 and the lower pressure rod 2 without affecting the rotation of the lower pressure rod 2. The other end of the connecting plate 4 is provided with a connecting hole 43, which facilitates the connection between the connecting plate 4 and the electric push rod 3.

[0037] like Figure 6 As shown, the top of the soil sampling head 5 is provided with a threaded groove 51, which is used for threaded connection with the threaded connector 22. The side of the soil sampling head 5 is provided with a side opening 52, and the inner wall of the soil sampling head 5 is frosted. This structure facilitates the smooth sampling of soil by the soil sampling head 5.

[0038] Example 2

[0039] like Figure 1 As shown, a soil microbial sampling tool adaptable to different soil properties includes a mounting bracket 1, which facilitates the installation of various components of the sampling tool. A pressing rod 2 is located in the middle of the mounting bracket 1, passing through the bracket 1. The pressing rod 2 facilitates pressing down the sand sampling head 6 for soil sampling. An electric push rod 3 is located on one side of the mounting bracket 1, with its output end connected to the pressing rod 2 via a connecting plate 4; the electric push rod 3 facilitates pressing down the pressing rod 2. A mounting frame 18 is located at the bottom of the mounting bracket 1, inside which the sand sampling head 6 is located. The sand sampling head 6 can move back and forth within the mounting frame 18; the mounting frame 18 facilitates the installation and carrying of the sand sampling head 6.

[0040] like Figure 2 As shown, a telescopic hole 16 is provided through the middle of the mounting bracket 1 for mounting the pressure rod 2. A mounting plate 11 is provided on the side of the mounting bracket 1, with a mounting hole 12 in the middle; the mounting plate 11 and mounting hole 12 facilitate the connection between the mounting bracket 1 and the electric push rod 3. A through hole 181 is provided in the middle of the mounting frame 18, allowing the sand sampling head 6 to pass through the mounting frame 18 and be inserted into the soil, and also allowing the bottom end of the pressure rod 2 to pass through the mounting frame 18; guide grooves 182 are provided at the top and bottom of the inner side of the mounting frame 18 to guide the sand sampling head 6. Foot pedals 183 are provided on both sides of the bottom of the mounting frame 18, facilitating the operation of the entire sampling tool. A battery 13 is provided at the top of the mounting bracket 1, providing power to the electric push rod 3 for easy control and use. Handles 14 are symmetrically provided on both sides of the battery 13, facilitating the operation of the entire sampling tool. The upper surface of the battery 13 is provided with a charging slot 17 and a control button 15. The charging slot 17 is for charging the battery 13, and the control button 15 is for controlling the opening and closing of the electric push rod 3.

[0041] like Figure 3 As shown, the bottom end of the pressure rod 2 is provided with an adapter plate 21, and the bottom surface of the adapter plate 21 is provided with a threaded connector 22; the adapter plate 21 and the threaded connector 22 facilitate the installation of the sand sampling head 6. The top end of the pressure rod 2 is provided with a rotating handle 23, which facilitates the rotation of the pressure rod 2 and the threaded connection between the pressure rod 2 and the aligned sand sampling head 6.

[0042] like Figure 4 As shown, the electric actuator 3 has a stud 31 at its bottom end, which passes through the mounting hole 12. A pressure cap 32 is provided at one end of the stud 31 passing through the mounting hole 12. This structure facilitates the fixing of the electric actuator 3 to the mounting plate 11. The electric actuator 3 has a power connection wire 33 on its side, and a power connector 34 at the end of the power connection wire 33. The power connector 34 is electrically connected to the battery 13. The cooperation between the power connection wire 33 and the power connector 34 facilitates power connection between the electric actuator 3 and the battery 13, making the operation and use of the electric actuator 3 convenient. The output end of the electric actuator 3 has a telescopic rod 35, and a connecting post 36 is provided at the top of the telescopic rod 35. A connecting cap 37 is provided at one end of the connecting post 36 passing through the connecting plate 4. The telescopic rod 35, in conjunction with the connecting post 36 and the connecting cap 37, facilitates the connection between the output end of the electric actuator 3 and the connecting plate 4.

[0043] like Figure 5 As shown, one end of the connecting plate 4 is provided with a rotating joint 41, and a bearing 42 is provided in the middle of the rotating joint 41. The bearing 42 is interference-fitted with the lower pressure rod 2. This structure facilitates the connection between the connecting plate 4 and the lower pressure rod 2 without affecting the rotation of the lower pressure rod 2. The other end of the connecting plate 4 is provided with a connecting hole 43, which facilitates the connection between the connecting plate 4 and the electric push rod 3.

[0044] like Figure 7 As shown, the top of the sand sampling head 6 is provided with a threaded groove 51, which is used for threaded connection with the threaded connector 22. The sand sampling head 6 has a cylindrical hollow structure, and the inner wall of the sand sampling head 6 is frosted. The sand sampling head 6 is provided with a leak-proof mesh inside. The leak-proof mesh can be set to a one-way structure, so that sand can enter the sand sampling head 6 through the leak-proof mesh and cannot leak out of the sand sampling head 6. When it is necessary to collect samples, the leak-proof mesh can be removed.

[0045] Example 3

[0046] like Figure 1 As shown, a soil microbial sampling tool adaptable to different soil properties includes a mounting bracket 1, which facilitates the installation of various components of the sampling tool. A pressing rod 2 is located in the middle of the mounting bracket 1, passing through the bracket 1. The pressing rod 2 facilitates pressing down the clay sampling head 7 for soil sampling. An electric push rod 3 is located on one side of the mounting bracket 1, with its output end connected to the pressing rod 2 via a connecting plate 4; the electric push rod 3 facilitates pressing down the pressing rod 2. A mounting frame 18 is located at the bottom of the mounting bracket 1, inside which the clay sampling head 7 is located. The clay sampling head 7 can move back and forth within the mounting frame 18; the mounting frame 18 facilitates the installation and carrying of the clay sampling head 7.

[0047] like Figure 2As shown, a telescopic hole 16 is provided through the middle of the mounting bracket 1 for mounting the pressure rod 2. A mounting plate 11 is provided on the side of the mounting bracket 1, with a mounting hole 12 in the middle; the mounting plate 11 and mounting hole 12 facilitate the connection between the mounting bracket 1 and the electric push rod 3. A through hole 181 is provided in the middle of the mounting frame 18, allowing the clay sampling head 7 to pass through the mounting frame 18 and be inserted into the soil, and also allowing the bottom end of the pressure rod 2 to pass through the mounting frame 18; guide grooves 182 are provided at the top and bottom of the inner side of the mounting frame 18 to guide the clay sampling head 7. Foot pedals 183 are provided on both sides of the bottom of the mounting frame 18, facilitating the operation of the entire sampling tool. A battery 13 is provided at the top of the mounting bracket 1, providing power to the electric push rod 3 for easy control and use. Handles 14 are symmetrically provided on both sides of the battery 13, facilitating the operation of the entire sampling tool. The upper surface of the battery 13 is provided with a charging slot 17 and a control button 15. The charging slot 17 is for charging the battery 13, and the control button 15 is for controlling the opening and closing of the electric push rod 3.

[0048] like Figure 3 As shown, the bottom end of the pressure rod 2 is provided with an adapter plate 21, and the bottom surface of the adapter plate 21 is provided with a threaded connector 22; the adapter plate 21 and the threaded connector 22 facilitate the installation of the clay sampling head 7. The top end of the pressure rod 2 is provided with a rotating handle 23, which facilitates the rotation of the pressure rod 2 and the threaded connection between the pressure rod 2 and the aligned clay sampling head 7.

[0049] like Figure 4 As shown, the electric actuator 3 has a stud 31 at its bottom end, which passes through the mounting hole 12. A pressure cap 32 is provided at one end of the stud 31 passing through the mounting hole 12. This structure facilitates the fixing of the electric actuator 3 to the mounting plate 11. The electric actuator 3 has a power connection wire 33 on its side, and a power connector 34 at the end of the power connection wire 33. The power connector 34 is electrically connected to the battery 13. The cooperation between the power connection wire 33 and the power connector 34 facilitates power connection between the electric actuator 3 and the battery 13, making the operation and use of the electric actuator 3 convenient. The output end of the electric actuator 3 has a telescopic rod 35, and a connecting post 36 is provided at the top of the telescopic rod 35. A connecting cap 37 is provided at one end of the connecting post 36 passing through the connecting plate 4. The telescopic rod 35, in conjunction with the connecting post 36 and the connecting cap 37, facilitates the connection between the output end of the electric actuator 3 and the connecting plate 4.

[0050] like Figure 5 As shown, one end of the connecting plate 4 is provided with a rotating joint 41, and a bearing 42 is provided in the middle of the rotating joint 41. The bearing 42 is interference-fitted with the lower pressure rod 2. This structure facilitates the connection between the connecting plate 4 and the lower pressure rod 2 without affecting the rotation of the lower pressure rod 2. The other end of the connecting plate 4 is provided with a connecting hole 43, which facilitates the connection between the connecting plate 4 and the electric push rod 3.

[0051] like Figure 8 As shown, the top of the clay sampling head 7 is provided with a threaded groove 51, which is used for threaded connection with the threaded connector 22. The bottom of the clay sampling head 7 is provided with a tapered cutting edge 71, which facilitates the smooth insertion of the clay sampling head 7 into the clay. Furthermore, the outer wall of the clay sampling head 7 is smoothly designed to reduce the friction between the clay sampling head 7 and the soil.

[0052] Working principle: First, ensure the battery 13 is fully charged. Then, select the appropriate sampling head based on the soil properties of the soil sample to be collected, and connect the corresponding sampling head to the threaded bottom of the pressing rod 2. Next, the operator steps on the pedal 183, activating the electric push rod 3, which drives the pressing rod 2 and the sampling head down into the soil. After pressing, use the electric push rod 3 to lift the sampling head, and then use a tool to remove the soil sample from inside the sampling head. The operation is simple and convenient.

[0053] In summary, compared with existing technologies, this application, by setting up an installation bracket 1 with an electric push rod 3 on its side, can drive a pressing rod 2 to press down, facilitating the pressing of the sand sampling head 6, clay sampling head 7, or loam sampling head 5 into the soil, thereby achieving the purpose of soil sampling. This method is more labor-saving and allows sampling personnel to work efficiently. The sand sampling head 6, clay sampling head 7, and loam sampling head 5 are all installed inside the limiting frame and can move back and forth within the limiting frame, allowing sampling personnel to selectively choose the sampling head according to their needs.

[0054] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A soil microbial sampling tool suitable for adapting to different soil properties, comprising a mounting bracket (1), characterized in that, The mounting bracket (1) is provided with a pressure rod (2) in the middle, which passes through the mounting bracket (1). An electric push rod (3) is provided on one side of the mounting bracket (1). The output end of the electric push rod (3) is connected to the pressure rod (2) through a connecting plate (4). The mounting bracket (1) is provided with a mounting frame (18) at the bottom. The mounting frame (18) is provided with a soil sampling head (5), a sand sampling head (6) and a clay sampling head (7). The soil sampling head (5), the sand sampling head (6) and the clay sampling head (7) can move back and forth inside the mounting frame (18).

2. The soil microbial sampling tool for adapting to different soil properties according to claim 1, wherein, The mounting bracket (1) has a telescopic hole (16) through the middle, the mounting bracket (1) has a mounting plate (11) on the side, and the mounting plate (11) has a mounting hole (12) in the middle; the mounting frame (18) has a through hole (181) in the middle, and the top and bottom of the inner side of the mounting frame (18) are provided with guide grooves (182), and the bottom of both sides of the mounting frame (18) are provided with pedals (183).

3. The soil microbial sampling tool of claim 2, wherein, The mounting bracket (1) has a battery (13) at its top, and handles (14) are symmetrically arranged on both sides of the battery (13). The upper surface of the battery (13) has a charging slot (17) and a control button (15).

4. The soil microbial sampling tool of claim 1, wherein, The bottom end of the pressure rod (2) is provided with an adapter plate (21), and the bottom surface of the adapter plate (21) is provided with a threaded connector (22); the top end of the pressure rod (2) is provided with a rotating handle (23).

5. The soil microbial sampling tool of claim 3, wherein, The electric push rod (3) has a stud (31) at its bottom end, the stud (31) passes through the mounting hole (12), and the end of the stud (31) that passes through the mounting hole (12) has a pressure cap (32); the electric push rod (3) has a power connection wire (33) on its side, and the end of the power connection wire (33) has a power connection plug (34), which is electrically connected to the battery (13); the output end of the electric push rod (3) has a telescopic rod (35), the top of the telescopic rod (35) has a connecting post (36), and the end of the connecting post (36) that passes through the connecting plate (4) has a connecting cap (37).

6. The soil microbial sampling tool of claim 1, wherein, One end of the connecting plate (4) is provided with a rotating joint (41), and the middle part of the rotating joint (41) is provided with a bearing (42). The bearing (42) is interference-fitted with the lower pressure rod (2), and the other end of the connecting plate (4) is provided with a connecting hole (43).

7. The soil microbial sampling tool of claim 4, wherein, The top of the loam sampling head (5), sand sampling head (6) and clay sampling head (7) are all provided with threaded grooves (51), which are used for threaded connection of the threaded connector (22).

8. The soil microbial sampling tool of claim 1, wherein, The soil sampling head (5) has a side opening (52) on its side, and the inner wall of the soil sampling head (5) is frosted.

9. The soil microbial sampling tool of claim 1, wherein, The sand sampling head (6) has a cylindrical hollow structure, the inner wall of the sand sampling head (6) is frosted, and the inside of the sand sampling head (6) is equipped with a leak-proof mesh.

10. The soil microbial sampling tool of claim 1, wherein, The clay sampling head (7) has a tapered cutting edge (71) at the bottom and the outer wall of the clay sampling head (7) is smooth to reduce the friction between the clay sampling head (7) and the soil.

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