A soil sampler for soil monitoring and method of use

Abstract

This application discloses a soil sampler for soil monitoring and its usage method, including a base plate, a sampling cylinder, a sampling structure, a first threaded shaft, a connecting structure, a first guide post, a mounting plate, and an adjustment structure. The sampling structure includes a connecting plate, with the sampling cylinder located below the connecting plate. The connecting plate is fixedly connected to the bottom end of the first threaded shaft. The top end of the sampling cylinder is fixedly connected to the first connecting post, and the top end of the first connecting post has a first side hole. The bottom end of the first threaded shaft has a second connecting groove. The top end of the first connecting post penetrates the connecting plate and extends into the second connecting groove. The end of a fixing bolt sequentially penetrates the bottom side end of the first threaded shaft and the first side hole, and the end of the fixing bolt is threaded with a fixing nut. The soil sampler is configured with a base plate, a fixing rod, a first guide post, a first threaded shaft, and a mounting plate, facilitating movement and transportation.

Description

Technical Field

[0001] This application relates to the field of soil monitoring technology, and in particular to a soil sampler for soil monitoring and its usage method. Background Technology

[0002] Soil environmental monitoring refers to determining environmental quality (or pollution level) and its changing trends by measuring representative values ​​of factors affecting environmental quality. Soil monitoring, as we usually refer to it, generally includes technical aspects such as sampling site selection, sample preparation, analytical methods, result characterization, data statistics, and quality evaluation.

[0003] Soil environmental monitoring typically involves using a soil sampler to extract soil from the ground. Soil sampler bits are usually spiral or cylindrical. The top of the spiral bit has a pair of sharp cutting edges that can rotate and cut into the soil. Next, the cutting edges have an enlarged soil-filling cavity. As the handle is rotated, the sampler drills downwards into the soil surface, allowing soil samples from the desired soil layer to be introduced into the cavity.

[0004] Chinese patent CN217819428U discloses a multi-depth integrated soil sampling device. Through the design of a micro-hydraulic rod and baffles, it can control whether soil enters the soil sampler, effectively preventing soil from other depths from entering the soil collector. By rotating the sleeve rod, the pin slides in the slot, thereby adjusting the height of the fixing frame. A distance of ten centimeters between the two transverse slots facilitates the calculation of the insertion depth. However, during use, the adjustable fixing frame is prone to instability, and driving the soil sampler with the micro-hydraulic rod is laborious and not conducive to rapid entry into the soil. Summary of the Invention

[0005] The purpose of this application is to provide a soil sampler for soil monitoring and a method of using it, which solves the problem that existing soil samplers are relatively laborious to use.

[0006] A soil sampler for soil monitoring and its method of use, comprising a base plate, a sampling cylinder, a sampling structure, a first threaded shaft, a connecting structure, a first guide column, a mounting plate, and an adjustment structure;

[0007] The sampling structure includes a connecting plate, with the sampling cylinder located below the connecting plate. The connecting plate is fixedly connected to the bottom end of the first threaded shaft. A first connecting post is fixedly connected to the top end of the sampling cylinder, and a first side hole is opened on the side of the top end of the first connecting post. A second connecting groove is opened at the bottom end of the first threaded shaft. The top end of the first connecting post penetrates through the connecting plate and extends into the second connecting groove. The end of the fixing bolt passes through the side of the bottom end of the first threaded shaft and the first side hole in sequence, and a fixing nut is threadedly connected to the end of the fixing bolt.

[0008] The connection structure includes a second threaded shaft and a threaded pin. A second connecting post is fixed to the bottom end of the second threaded shaft. A first connecting groove is opened at the top end of the first threaded shaft. The bottom end of the second connecting post is engaged inside the first connecting groove, and a second side hole is opened on the side of the second connecting post. A threaded cavity is opened on the side of the top end of the first threaded shaft. The threaded pin passes through the second side hole and is threadedly connected to the threaded cavity.

[0009] The adjustment structure includes a sleeve that passes through the mounting plate and is rotatably connected to the mounting plate. A first threaded shaft is sleeved inside the sleeve. A first nut and a second nut are respectively provided at both ends of the sleeve, and both the first nut and the second nut are threadedly connected to the first threaded shaft. A limit groove is opened on the surface of the first threaded shaft, and a limit block is fixedly connected to the inner side wall of the sleeve, and the limit block is engaged inside the limit groove.

[0010] Furthermore, the base plate has an arc-shaped structure, and a connecting hole is opened on the upper surface of the base plate. A fixing rod is provided below the connecting hole. The bottom end of the fixing rod has a conical structure, and the top end of the fixing rod has a threaded groove. A threaded post is fixedly connected to the bottom end of the first guide post. The bottom end of the threaded post passes through the connecting hole and is threadedly connected to the threaded groove.

[0011] Furthermore, there are three first guide posts, which are symmetrically distributed above the base plate. A side plate is fixed to the bottom side of each first guide post, and a positioning block is fixed to the lower surface of the side plate. A second positioning hole is opened on the upper surface of the base plate, and the positioning block is engaged inside the second positioning hole.

[0012] Furthermore, a second guide post is provided above the first guide post. The top of the first guide post has a threaded groove, and the bottom of the second guide post is fixedly connected to a threaded post, and the threaded post is threadedly connected to the threaded groove.

[0013] Furthermore, an extension plate is fixedly connected to the side of the mounting plate, and a mounting box is fixedly connected to the lower surface of the extension plate. A first motor is fixedly connected to one side of the mounting box, and a third gear is provided inside the mounting box, and the third gear is sleeved on the output end surface of the first motor. The first guide post and the second guide post both have toothed grooves on their sides, and the third gear meshes with the toothed grooves.

[0014] Furthermore, a second motor is fixedly connected to the upper surface of the mounting plate, the output end of the second motor extends through to the bottom of the mounting plate, a second gear is sleeved on the surface of the output end of the second motor, and a first gear is sleeved on the bottom surface of the sleeve, and the first gear meshes with the second gear.

[0015] Furthermore, the first threaded shaft and the second threaded shaft both have the limiting groove on their sides. The first threaded shaft is slidably connected to the sleeve. A protective shell is provided below the first gear and the second gear. Both ends of the protective shell are fixed to the lower surface of the expansion plate, and the bottom end of the first threaded shaft passes through the protective shell.

[0016] Furthermore, the end face of the connecting plate is circular, and four first positioning holes are distributed in a ring on the lower surface of the connecting plate. Four positioning posts are distributed in a ring on the top of the sampling cylinder, and the top of the positioning posts are engaged inside the first positioning holes.

[0017] Furthermore, both the first connecting post and the second connecting post have rectangular cross-sections, the threaded pin is perpendicular to the second connecting post, and both ends of the threaded pin have operating grooves.

[0018] Furthermore, the method of use includes the following steps:

[0019] S1. First, the soil sampler can be assembled. The threaded post at the bottom of the first guide post passes through the connecting hole on the base plate and is screwed into the threaded groove at the top of the fixing rod. At this time, the positioning post on the lower surface of the side plate will be engaged in the second positioning hole. At the same time, the top of the first guide post passes through the guide hole on the expansion plate. At this time, the toothed groove on the side of the first guide post will mesh with the third gear. Then, the top of the first threaded shaft passes through the sleeve. At this time, the limiting groove on the side of the first threaded shaft will be engaged in the limiting groove on the inner side wall of the sleeve. The first nut and the second nut at the top and bottom of the sleeve are screwed into the first threaded shaft and tightened. Then, the top of the sampling tube is engaged in the lower surface of the connecting plate. At this time, the positioning block will be engaged in the first positioning hole, and the first connecting post will be engaged in the second connecting groove. The sampling tube and the first threaded shaft can be fixed by fixing bolts and fixing nuts.

[0020] S2. Then, place the soil sampler at the sampling position. At this time, the bottom end of the fixing rod can be engaged in the soil to fix the soil sampler. Then, the second motor is activated, which drives the second gear to rotate. The meshing of the second gear and the first gear drives the sleeve to rotate. When the sleeve rotates, it drives the first threaded shaft to rotate synchronously, further driving the sampling cylinder to rotate. At the same time, the first motor is activated, which drives the third gear to rotate. The meshing of the third gear and the tooth groove allows the mounting plate to slide along the first guide post. At this time, the sampling cylinder will be fed downward to achieve the sampling purpose.

[0021] S3. Finally, the size of the sampling cylinder of this soil sampler can be adjusted according to needs, and the sampling depth of this soil sampler can be increased by adding the first guide post and the first threaded shaft. When the first guide post and the second guide post are connected, the threaded post at the bottom of the second guide post can be directly screwed into the threaded groove at the top of the first guide post. At this time, the teeth on the first guide post and the second guide post will be aligned. When the first threaded shaft and the second threaded shaft are connected, the second connecting post at the bottom of the second threaded shaft can be directly engaged into the first connecting groove at the top of the first threaded shaft, and the threaded pin can be passed through the second side hole. At this time, the threaded pin and the threaded cavity will be screwed together and tightened. Disassembly and assembly are relatively simple.

[0022] Through the above embodiments of this application, the maximum sampling depth of this sampler can be adjusted by superimposing the number of second threaded shafts and second guide posts, and the height of the sampling cylinder can be determined by adjusting the positions of the first nut and the second nut, which provides better stability than traditional adjustment brackets; at the same time, the second motor drives the sleeve to rotate, and the sleeve drives the first threaded shaft to rotate synchronously, further driving the sampling cylinder to rotate; simultaneously, the first motor is activated, and the first motor drives the mounting plate to slide along the first guide post, at which time the sampling cylinder will feed downwards, thereby achieving the sampling purpose, which saves manpower during use. Attached Figure Description

[0023] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of the accompanying drawings are used to explain the application and do not constitute an undue limitation of the application. In the drawings...

[0024] Figure 1 This is a schematic diagram of the overall three-dimensional structure of an embodiment of the soil sampler for soil monitoring and its usage method according to this application;

[0025] Figure 2 for Figure 1 A schematic diagram of the overall internal structure of the soil sampler for soil monitoring and its usage method shown in the embodiment;

[0026] Figure 3 for Figure 1 The diagram shows the connection between the mounting plate and the expansion plate of the soil sampler for soil monitoring and its usage method in the embodiment shown.

[0027] Figure 4 for Figure 1 A three-dimensional structural diagram of the sleeve structure of the soil sampler for soil monitoring and its usage method shown in the embodiment;

[0028] Figure 5 for Figure 2 A connection diagram of the connecting plate and support rod of a soil sampler for soil monitoring and its method of use, according to another embodiment shown;

[0029] Figure 6 for Figure 2 Another embodiment of the soil sampler for soil monitoring and its method of use is shown. Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0030] Figure 7 for Figure 1 A diagram showing the connection between the first guide column and the side plate of the soil sampler for soil monitoring and its usage method in the illustrated embodiment.

[0031] Figure 8 for Figure 2 A diagram showing the connection between the first threaded shaft and the second threaded shaft of a soil sampler for soil monitoring and its method of use, according to another embodiment;

[0032] Figure 9 for Figure 8 A three-dimensional structural diagram of a threaded pin for a soil sampler for soil monitoring and a method of using it, according to another embodiment shown.

[0033] In the diagram: 1. Base plate; 2. Fixing rod; 3. Fixing bolt; 4. Sampling cylinder; 5. Connecting plate; 51. First positioning hole; 6. Side plate; 7. First threaded shaft; 71. Limiting groove; 72. First connecting groove; 73. Second connecting groove; 8. First guide post; 9. Mounting plate; 10. First motor; 11. Mounting box; 12. Extension plate; 121. Guide hole; 13. Threaded groove; 14. Tooth groove; 15. Sleeve; 151. Limiting block; 16. First nut; 17. Second motor; 1 8. Second guide post; 19. Protective shell; 191. First tooth groove; 20. Second threaded shaft; 21. First gear; 22. Second gear; 23. Second nut; 24. Positioning block; 25. Connecting hole; 26. Positioning post; 27. First connecting post; 271. First side hole; 28. Fixing nut; 29. ​​Third gear; 30. Threaded post; 31. Threaded cavity; 32. Second connecting post; 321. Second side hole; 33. Threaded pin; 331. Operating groove; 34. Second positioning hole. Detailed Implementation

[0034] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0035] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0036] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0037] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0038] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; 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, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0039] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0040] Please see Figure 1-9 As shown, a soil sampler for soil monitoring and its usage method include: a base plate 1, a sampling cylinder 4, a sampling structure, a first threaded shaft 7, a connecting structure, a first guide column 8, a mounting plate 9, and an adjustment structure;

[0041] The base plate 1, the first guide column 8 and the mounting plate 9 constitute the main support structure of this soil sampler. The sampling cylinder 4 is set to sample the soil, and the first threaded shaft 7 is set to drive the sampling cylinder 4 to rotate.

[0042] The sampling structure allows for the disassembly and assembly of the sampling cylinder 4, the connection structure allows for the installation and disassembly of the first threaded shaft 7 and the second threaded shaft 20, and the adjustment structure allows for the adjustment of the sampling depth of the sampling cylinder 4.

[0043] like Figure 2 and Figure 5 As shown, the sampling structure includes a connecting plate 5, a sampling cylinder 4 located below the connecting plate 5, the connecting plate 5 being fixedly connected to the bottom end of the first threaded shaft 7, a first connecting post 27 being fixedly connected to the top end of the sampling cylinder 4, and a first side hole 271 being opened on the side of the top end of the first connecting post 27; a second connecting groove 73 being opened at the bottom end of the first threaded shaft 7, the top end of the first connecting post 27 penetrating through the connecting plate 5, the top end of the first connecting post 27 penetrating into the interior of the second connecting groove 73, and the end of the fixing bolt 3 sequentially penetrating through the side of the bottom end of the first threaded shaft 7 and the first side hole 271, and a fixing nut 28 being threadedly connected to the end of the fixing bolt 3;

[0044] As a supplementary solution, the end face of the connecting plate 5 is circular, and four first positioning holes 51 are distributed in a ring on the lower surface of the connecting plate 5. Four positioning posts 26 are distributed in a ring on the top of the sampling cylinder 4, and the top of the positioning posts 26 are engaged inside the first positioning holes 51.

[0045] When installing the sampling cylinder 4, the first connecting post 27 at the top of the sampling cylinder 4 can be directly engaged inside the second connecting groove 73. At this time, the four positioning posts 26 will be engaged inside the four first positioning holes 51 respectively. At the same time, the end of the fixing bolt 3 passes through the bottom side of the first threaded shaft 7 and the first side hole 271 in sequence, and the fixing nut 28 is screwed into the end of the fixing bolt 3 to install the sampling cylinder 4. The size of the sampling cylinder 4 can be adjusted according to the needs of this soil sampler. Conversely, the sampling cylinder 4 can be removed by disassembling the fixing bolt 3 and the fixing nut 28, which makes it easy to replace the sampling cylinder 4.

[0046] like Figure 2 and Figure 8As shown, the connecting structure includes a second threaded shaft 20 and a threaded pin 33. A second connecting post 32 is fixedly connected to the bottom end of the second threaded shaft 20. A first connecting groove 72 is opened at the top end of the first threaded shaft 7. The bottom end of the second connecting post 32 is engaged inside the first connecting groove 72, and a second side hole 321 is opened on the side of the second connecting post 32. A threaded cavity 31 is opened on the side of the top end of the first threaded shaft 7. The threaded pin 33 passes through the second side hole 321 and is threadedly connected to the threaded cavity 31.

[0047] The cross-sections of the first connecting post 27 and the second connecting post 32 are both rectangular. The threaded pin 33 is perpendicular to the second connecting post 32, and both ends of the threaded pin 33 have operating grooves 331.

[0048] The sampling depth of this soil sampler can be increased by adding the first guide post 8 and the first threaded shaft 7. When the first threaded shaft 7 is connected to the second threaded shaft 20, the second connecting post 32 at the bottom of the second threaded shaft 20 can be directly engaged in the first connecting groove 72 at the top of the first threaded shaft 7, and the threaded pin 33 can be passed through the second side hole 321. At this time, the threaded pin 33 and the threaded cavity 31 will be screwed together and tightened.

[0049] like Figure 2 As shown, a second guide post 18 is provided above the first guide post 8. A threaded groove 13 is opened at the top of the first guide post 8, and a threaded post 30 is fixedly connected to the bottom of the second guide post 18. The threaded post 30 is threadedly connected to the threaded groove 13.

[0050] When the first guide post 8 and the second guide post 18 are connected, the threaded post 30 at the bottom of the second guide post 18 can be directly screwed into the threaded groove 13 at the top of the first guide post 8. At this time, the toothed grooves 14 on the first guide post 8 and the second guide post 18 will be aligned, which makes it easy for the mounting plate 9 to slide along the first guide post 8 and the second guide post 18.

[0051] like Figure 2 As shown, the adjustment structure includes a sleeve 15, which passes through the mounting plate 9 and is rotatably connected to the mounting plate 9. A first threaded shaft 7 is sleeved inside the sleeve 15. A first nut 16 and a second nut 23 are respectively provided at both ends of the sleeve 15, and both the first nut 16 and the second nut 23 are threadedly connected to the first threaded shaft 7. A limit groove 71 is opened on the surface of the first threaded shaft 7, and a limit block 151 is fixedly connected to the inner side wall of the sleeve 15, and the limit block 151 is engaged inside the limit groove 71.

[0052] Using this method, the first threaded shaft 7 can be directly fitted inside the sleeve 15. The distance between the sampling cylinder 4 and the mounting plate 9 can be adjusted by sliding the first threaded shaft 7. Since the first nut 16 and the second nut 23 are located at the two ends of the sleeve 15 respectively, the first threaded shaft 7 and the sleeve 15 can be fixed by tightening the first nut 16 and the second nut 23, thereby adjusting the sampling depth of the sampling cylinder 4. The operation is relatively simple.

[0053] like Figure 1 and Figure 2 As shown, the base plate 1 has an arc-shaped structure. A connecting hole 25 is opened on the upper surface of the base plate 1. A fixing rod 2 is provided below the connecting hole 25. The bottom end of the fixing rod 2 has a tapered structure, and the top end of the fixing rod 2 has a threaded groove 13. A threaded post 30 is fixedly connected to the bottom end of the first guide post 8. The bottom end of the threaded post 30 passes through the connecting hole 25 and is threadedly connected to the threaded groove 13.

[0054] Among them, there are three first guide posts 8, which are symmetrically distributed above the base plate 1. The bottom side of the first guide post 8 is fixedly connected to a side plate 6, and the lower surface of the side plate 6 is fixedly connected to a positioning block 24. The upper surface of the base plate 1 has a second positioning hole 34, and the positioning block 24 is engaged inside the second positioning hole 34.

[0055] The threaded post 30 at the bottom of the first guide post 8 passes through the connecting hole 25 on the base plate 1 and is screwed into the threaded groove 13 at the top of the fixing rod 2. At this time, the positioning post 26 on the lower surface of the side plate 6 will be engaged in the second positioning hole 34, thereby fixing the fixing rod 2, the base plate 1 and the first guide post 8. At the same time, the soil sampler can be fixed on the ground by the fixing rod 2.

[0056] As a specific solution, an extension plate 12 is fixedly connected to the side of the mounting plate 9, and a mounting box 11 is fixedly connected to the lower surface of the extension plate 12. A first motor 10 is fixedly connected to one side of the mounting box 11. A third gear 29 is provided inside the mounting box 11, and the third gear 29 is sleeved on the output end surface of the first motor 10. The first guide post 8 and the second guide post 18 both have toothed grooves 14 on their sides, and the third gear 29 meshes with the toothed grooves 14.

[0057] The operation of the first motor 10 drives the third gear 29 to rotate. The meshing of the third gear 29 with the tooth groove 14 allows the mounting plate 9 to slide along the first guide post 8. At this time, the sampling cylinder 4 will be fed downward to achieve the sampling purpose.

[0058] As a preferred embodiment, a second motor 17 is fixedly connected to the upper surface of the mounting plate 9, the output end of the second motor 17 extends through to the bottom of the mounting plate 9, a second gear 22 is sleeved on the surface of the output end of the second motor 17, and a first gear 21 is sleeved on the bottom surface of the sleeve 15, and the first gear 21 and the second gear 22 are meshed and connected.

[0059] The operation of the second motor 17 will drive the second gear 22 to rotate. The meshing of the second gear 22 with the first gear 21 will drive the sleeve 15 to rotate. When the sleeve 15 rotates, it will drive the first threaded shaft 7 to rotate synchronously, which will further drive the sampling cylinder 4 to rotate.

[0060] Both the first threaded shaft 7 and the second threaded shaft 20 have limit grooves 71 on their sides. The first threaded shaft 7 is slidably connected to the sleeve 15. The first gear 21 and the second gear 22 are provided with protective shells 19 below. The two ends of the protective shells 19 are fixed to the lower surface of the expansion plate 12, and the bottom end of the first threaded shaft 7 passes through the protective shells 19.

[0061] The first threaded shaft 7 and the second threaded shaft 20 can be used together to adjust the maximum sampling depth of the sampling cylinder 4. Meanwhile, a protective shell 19 is provided on the outside of the first gear 21 and the second gear 22, which can protect the first gear 21 and the second gear 22.

[0062] Specifically, the soil sampler can first be assembled by threading the threaded post 30 at the bottom of the first guide post 8 through the connecting hole 25 on the base plate 1 and screwing it into the threaded groove 13 at the top of the fixing rod 2. At this time, the positioning post 26 on the lower surface of the side plate 6 will be engaged inside the second positioning hole 34. At the same time, the top of the first guide post 8 is then threaded through the guide hole 121 on the extension plate 12. At this time, the toothed groove 14 on the side of the first guide post 8 will mesh with the third gear 29. Then, the top of the first threaded shaft 7 is threaded through the sleeve. 15. At this time, the limiting groove 71 on the side of the first threaded shaft 7 will engage with the limiting groove on the inner side wall of the sleeve 15, and the first nut 16 and the second nut 23 at the top and bottom of the sleeve 15 will be screwed and tightened with the first threaded shaft 7; then the top of the sampling cylinder 4 will be engaged with the lower surface of the connecting plate 5, at which time the positioning block 24 will be engaged with the first positioning hole 51, and the first connecting column 27 will be engaged with the second connecting groove 73. Then the sampling cylinder 4 and the first threaded shaft 7 can be fixed by the fixing bolt 3 and the fixing nut 28.

[0063] Then, the soil sampler is placed at the sampling position. At this time, the bottom end of the fixing rod 2 can be locked in the soil to fix the soil sampler. Then, the second motor 17 is activated, which drives the second gear 22 to rotate. Under the meshing of the second gear 22 and the first gear 21, the sleeve 15 can be rotated. When the sleeve 15 rotates, it drives the first threaded shaft 7 to rotate synchronously, which further drives the sampling cylinder 4 to rotate. At the same time, the first motor 10 is activated, which drives the third gear 29 to rotate. Under the meshing of the third gear 29 and the tooth groove 14, the mounting plate 9 can slide along the first guide post 8. At this time, the sampling cylinder 4 will be fed downward to achieve the sampling purpose.

[0064] Finally, the size of the sampling cylinder 4 can be adjusted according to the needs of this soil sampler, and the sampling depth of this soil sampler can be increased by adding the first guide post 8 and the first threaded shaft 7. When the first guide post 8 and the second guide post 18 are connected, the threaded post 30 at the bottom of the second guide post 18 can be directly screwed into the threaded groove 13 at the top of the first guide post 8. At this time, the toothed grooves 14 on the first guide post 8 and the second guide post 18 will be aligned. When the first threaded shaft 7 and the second threaded shaft 20 are connected, the second connecting post 32 at the bottom of the second threaded shaft 20 can be directly engaged into the first connecting groove 72 at the top of the first threaded shaft 7, and the threaded pin 33 can be passed through the second side hole 321. At this time, the threaded pin 33 and the threaded cavity 31 will be screwed into place. The assembly and disassembly are relatively simple.

[0065] The above description is merely a preferred embodiment of this application and is not intended to limit the application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A soil sampler for soil monitoring, characterized in that: It includes a base plate (1), a sampling cylinder (4), a sampling structure, a first threaded shaft (7), a connecting structure, a first guide post (8), a mounting plate (9), and an adjustment structure; The sampling structure includes a connecting plate (5), the sampling cylinder (4) is located below the connecting plate (5), the connecting plate (5) is fixedly connected to the bottom end of the first threaded shaft (7), the top end of the sampling cylinder (4) is fixedly connected to a first connecting post (27), and the top side of the first connecting post (27) has a first side hole (271); the bottom end of the first threaded shaft (7) has a second connecting groove (73), the top end of the first connecting post (27) penetrates through the connecting plate (5), the top end of the first connecting post (27) penetrates into the second connecting groove (73), the end of the fixing bolt (3) penetrates through the bottom side of the first threaded shaft (7) and the first side hole (271) in sequence, and the end of the fixing bolt (3) is threadedly connected to a fixing nut (28); The connection structure includes a second threaded shaft (20) and a threaded pin (33). The bottom end of the second threaded shaft (20) is fixedly connected to a second connecting post (32). The top end of the first threaded shaft (7) has a first connecting groove (72). The bottom end of the second connecting post (32) is engaged inside the first connecting groove (72), and the side of the second connecting post (32) has a second side hole (321). The top end of the first threaded shaft (7) has a threaded cavity (31). The threaded pin (33) passes through the second side hole (321), and the threaded pin (33) is threadedly connected to the threaded cavity (31). The adjustment structure includes a sleeve (15) that passes through the mounting plate (9) and is rotatably connected to the mounting plate (9). A first threaded shaft (7) is sleeved inside the sleeve (15). A first nut (16) and a second nut (23) are respectively provided at both ends of the sleeve (15), and both the first nut (16) and the second nut (23) are threadedly connected to the first threaded shaft (7). A limiting groove (71) is opened on the surface of the first threaded shaft (7), and a limiting block (151) is fixedly connected to the inner side wall of the sleeve (15), and the limiting block (151) is engaged inside the limiting groove (71). The base plate (1) has an arc-shaped structure. A connecting hole (25) is opened on the upper surface of the base plate (1). A fixing rod (2) is provided below the connecting hole (25). The bottom end of the fixing rod (2) has a tapered structure, and the top end of the fixing rod (2) has a threaded groove (13). A threaded post (30) is fixedly connected to the bottom end of the first guide post (8). The bottom end of the threaded post (30) passes through the connecting hole (25) and is threadedly connected to the threaded groove (13). There are three first guide posts (8), and the three first guide posts (8) are symmetrically distributed above the base plate (1). A side plate (6) is fixed to the bottom side of the first guide post (8). A positioning block (24) is fixed to the lower surface of the side plate (6). A second positioning hole (34) is opened on the upper surface of the base plate (1), and the positioning block (24) is engaged inside the second positioning hole (34). A second guide post (18) is provided above the first guide post (8). A threaded groove (13) is opened at the top of the first guide post (8). A threaded post (30) is fixed at the bottom of the second guide post (18), and the threaded post (30) is threadedly connected to the threaded groove (13). An extension plate (12) is fixedly connected to the side of the mounting plate (9), and a mounting box (11) is fixedly connected to the lower surface of the extension plate (12). A first motor (10) is fixedly connected to one side of the mounting box (11). A third gear (29) is provided inside the mounting box (11), and the third gear (29) is sleeved on the output end surface of the first motor (10). The first guide post (8) and the second guide post (18) both have tooth grooves (14) on their sides, and the third gear (29) meshes with the tooth grooves (14).

2. The soil sampler for soil monitoring according to claim 1, characterized in that: The upper surface of the mounting plate (9) is fixed with a second motor (17), the output end of the second motor (17) extends through to the bottom of the mounting plate (9), the surface of the output end of the second motor (17) is fitted with a second gear (22), the bottom surface of the sleeve (15) is fitted with a first gear (21), and the first gear (21) meshes with the second gear (22).

3. The soil sampler for soil monitoring according to claim 2, characterized in that: The first threaded shaft (7) and the second threaded shaft (20) are both provided with the limiting groove (71) on their sides. The first threaded shaft (7) is slidably connected to the sleeve (15). The first gear (21) and the second gear (22) are provided with a protective shell (19) below them. The two ends of the protective shell (19) are fixed to the lower surface of the extension plate (12), and the bottom end of the first threaded shaft (7) passes through the protective shell (19).

4. The soil sampler for soil monitoring according to claim 3, characterized in that: The end face of the connecting plate (5) is circular. The lower surface of the connecting plate (5) has four first positioning holes (51) distributed in an annular pattern. The top of the sampling tube (4) has four positioning posts (26) distributed in an annular pattern, and the top of the positioning posts (26) is engaged inside the first positioning holes (51).

5. The soil sampler for soil monitoring according to claim 4, characterized in that: The first connecting post (27) and the second connecting post (32) have rectangular cross-sections. The threaded pin (33) is perpendicular to the second connecting post (32), and both ends of the threaded pin (33) have operating grooves (331).

6. A method of using the soil sampler for soil monitoring as described in claim 5, characterized in that: The method of use includes the following steps: S1. First, assemble the soil sampler. Insert the threaded post (30) at the bottom of the first guide post (8) through the connecting hole (25) on the base plate (1) and screw it into the threaded groove (13) at the top of the fixing rod (2). At this time, the positioning post (26) on the lower surface of the side plate (6) will be engaged inside the second positioning hole (34). Then, insert the top of the first guide post (8) through the guide hole (121) on the extension plate (12). At this time, the toothed groove (14) on the side of the first guide post (8) will mesh with the third gear (29). Then, insert the top of the first threaded shaft (7) through the sleeve (15). At this time, the limiting groove (71) on the side of the first threaded shaft (7) will be engaged with the limiting groove on the inner side wall of the sleeve (15), and the first nut (16) and the second nut (23) at the top and bottom of the sleeve (15) will be engaged and tightened with the first threaded shaft (7); then the top of the sampling cylinder (4) will be engaged with the lower surface of the connecting plate (5), at this time the positioning block (24) will be engaged with the first positioning hole (51), and the first connecting column (27) will be engaged with the second connecting groove (73). Then the sampling cylinder (4) and the first threaded shaft (7) can be fixed by the fixing bolt (3) and the fixing nut (28). S2. Then place the soil sampler at the sampling position. At this time, the bottom end of the fixing rod (2) can be locked in the soil to fix the soil sampler. Then make the second motor (17) work. The second motor (17) will drive the second gear (22) to rotate. Under the meshing of the second gear (22) and the first gear (21), the sleeve (15) can be driven to rotate. When the sleeve (15) rotates, it will drive the first threaded shaft (7) to rotate synchronously, and further drive the sampling cylinder (4) to rotate. At the same time, make the first motor (10) work. The first motor (10) will drive the third gear (29) to rotate. Under the meshing of the third gear (29) and the tooth groove (14), the mounting plate (9) can slide along the first guide post (8). At this time, the sampling cylinder (4) will be fed downward. S3. Finally, the size of the sampling tube (4) of this soil sampler can be adjusted according to the needs, and the sampling depth of this soil sampler can be increased by adding the first guide post (8) and the first threaded shaft (7); when the first guide post (8) and the second guide post (18) are connected, the threaded post (30) at the bottom of the second guide post (18) can be directly screwed into the threaded groove (13) at the top of the first guide post (8), and the toothed groove (14) on the first guide post (8) and the second guide post (18) will be aligned; when the first threaded shaft (7) and the second threaded shaft (20) are connected, the second connecting post (32) at the bottom of the second threaded shaft (20) can be directly engaged into the first connecting groove (72) at the top of the first threaded shaft (7), and the threaded pin (33) can be passed through the second side hole (321), and the threaded pin (33) and the threaded cavity (31) will be screwed into each other.

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