A soil sampling device and its usage method for forestry engineering surveying and mapping

Abstract

The present invention relates to the technical field of soil sampling, and specifically relates to a soil sampling device and a using method for forestry engineering surveying and mapping, including a power mechanism, a support frame, a drill rod, a connecting piece, and a sampling drill bit. The support frame is fixedly installed on both sides of the power mechanism. The drill rod is fixedly connected to the output shaft of the power mechanism. The connecting piece is threadedly connected to the bottom of the drill rod. The sampling drill bit is fixedly installed at the bottom of the connecting piece. A cutting assembly is arranged on the lower side of the sampling drill bit, and the cutting assembly is used to reduce the sampling difficulty of the device. A partitioning assembly is arranged in the inner cavity of the sampling drill bit. For this soil sampling device and using method for forestry engineering surveying and mapping, through the partitioning assembly, samples can be separated and stored, reducing the risk of cross-infection between samples. Through the elastic opening assembly and the blanking assembly, the blanking process can be made more convenient. At the same time, by using the blanking assembly, the device can be automatically cleaned when the device is cleaned.

Description

Technical Field

[0001] The present invention relates to the technical field of soil sampling, and particularly to a soil sampling device and a using method for forestry engineering surveying and mapping. Background Technique

[0002] In forestry engineering surveying and mapping, soil sampling is a key step in obtaining soil information, which is of great significance for analyzing soil fertility, composition, and evaluating the forestry ecological environment. The traditional sampling method is to use a drill rod and a sampling drill bit to cooperate for sampling. The drill bit penetrates into the soil, and the soil is stored in the sample cavity.

[0003] However, in the soil surveying and mapping of forestry projects, the soil for forestry has excellent fertility and moisture, and plants grow well. There are easily plant roots in the soil. When the sampling drill bit penetrates into the soil and rotates, it is easy to wrap the plant roots, affecting the continuous penetration of the drill bit, or easily taking the plant roots into the sample cavity, resulting in a reduction in the sample volume, thus affecting soil sampling. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides a soil sampling device and a using method for forestry engineering surveying and mapping, which solve the problems raised in the above background technique.

[0005] To achieve the above purposes, the present invention is realized through the following technical solutions: A soil sampling device for forestry engineering surveying and mapping includes a power mechanism, a support frame, a drill rod, a connecting piece, and a sampling drill bit. The support frame is fixedly installed on both sides of the power mechanism. The drill rod is fixedly connected to the output shaft of the power mechanism. The connecting piece is threadedly connected to the bottom of the drill rod. The sampling drill bit is fixedly installed at the bottom of the connecting piece. A cutting assembly is arranged on the lower side of the sampling drill bit, and the cutting assembly is used to reduce the sampling difficulty of the device. A separating assembly is arranged in the inner cavity of the sampling drill bit, and the separating assembly is used to avoid cross-infection of samples. An elastic opening assembly and a blanking assembly are arranged on the sampling drill bit, and the elastic opening assembly and the blanking assembly are used for convenient sampling.

[0006] Optionally, the cutting assembly includes a sample cavity, the sample cavity is opened inside the sampling drill bit, and a cover plate is arranged on the front side of the sampling drill bit;

[0007] A first clamping groove is opened on the lower side of the sampling drill bit. A wire mesh is clamped in the first clamping groove. Receiving bins are fixedly installed on both sides of the wire mesh. The inner wall of the receiving bin is fixedly connected to a first telescopic spring. The other end of the first telescopic spring is fixedly connected to a first cutting knife, and the blade body of the first cutting knife is arc-shaped. A positioning hole is opened in the first clamping groove, and a spring positioning pin is clamped in the positioning hole.

[0008] Optionally, the separation component includes a first installation groove opened inside the sampling drill bit. A separator is movably installed in the first installation groove, and a second installation groove is opened on one side inside the sampling drill bit;

[0009] An electric push rod is fixedly installed in the second installation groove. The output shaft of the electric push rod is fixedly connected to the top of the separator. One end of the separator away from the output shaft of the electric push rod is fixedly connected with an extension piece, and the other end of the extension piece is fixedly connected with an elastic column. One end of the elastic column away from the extension piece is fixed in the second installation groove.

[0010] Optionally, the ejection component includes first through grooves opened on the surface of the cover plate. The number of the first through grooves is two, and they are respectively on the upper and lower sides of the cover plate, and are arranged diagonally;

[0011] Second clamping grooves are opened on the surface of the sampling drill bit corresponding to the first through grooves. A fixing plate is arranged in the second clamping grooves. A second telescopic spring is fixedly connected to the surface of the fixing plate, and a limiting block is fixedly connected to one end of the second telescopic spring away from the fixing plate;

[0012] Both the upper and lower sides of the separator are fixedly connected with toggling pieces. The toggling pieces are L-shaped, and the ends of the toggling pieces are fixedly connected to the separator. Second through grooves adapted to the toggling pieces are opened inside the sampling drill bit.

[0013] Optionally, the blanking component includes a third installation groove opened inside the sampling drill bit. A lead screw is rotatably connected in the third installation groove. The upper end of the lead screw is fixedly installed with a rotating shaft. The rotating shaft penetrates through the third installation groove and extends out of the outside of the third installation groove. A hexagonal groove is opened at the top of the rotating shaft;

[0014] The outer surface of the lead screw is threadedly connected with a nut sleeve. The number of the nut sleeves is more than one. A driving arm is movably installed on the surface of the nut sleeve, and a push plate is movably installed at one end of the driving arm away from the nut sleeve.

[0015] Optionally, an extrusion piece is fixedly installed on the lower side of the separator. The extrusion piece is in a right-angled triangle shape, and the inclined surface faces the driving direction of the separator. A third through groove adapted to the extrusion piece is opened inside the sampling drill bit.

[0016] Optionally, the separator is bent, and a notch adapted to the sample cavity is opened on the surface. The notch is intermittently opened, and the position of the push plate corresponds to the notch opened on the surface of the separator.

[0017] Optionally, a second cutting knife is fixedly installed on one side of the notch of the separator, and the cutting edge of the second cutting knife faces the driving direction of the separator.

[0018] Optionally, a clamping plate is provided on one side of the second clamping slot close to the cover plate, and a limiting groove adapted to the clamping plate is provided in the middle of the limiting block.

[0019] A method for using a soil sampling device for forestry engineering surveying and mapping, using the soil sampling device for forestry engineering surveying and mapping as described above, comprising the following steps:

[0020] S1: When in use, the user first needs to place the sampling drill bit at the sampling location, and then start the power mechanism to drill the soil for sampling. When the sampling drill bit gradually penetrates into the soil, the first cutting knife will stretch the first telescopic spring under the action of centrifugal force, move out of the storage bin, and cut the plant roots in the soil;

[0021] S2: When sampling is completed, the electric push rod can be started to drive the partition so that the partition can separate soil samples from different areas to avoid cross-infection of samples during unloading. At the same time, the toggle member will drive the limit block to release the limit block to facilitate the opening of the cover;

[0022] S3: By inserting a hexagonal wrench into the rotating shaft and rotating the wrench, the lead screw can be driven to rotate, so that the lead screw drives the screw sleeve, and the screw sleeve can drive the driving arm, so that the driving arm squeezes out the sample, which is convenient for sampling.

[0023] The present invention provides a soil sampling device for forestry engineering surveying and mapping and a method of use, which has the following beneficial effects:

[0024] 1. The soil sampling device for forestry engineering surveying and mapping and the method of use thereof, through the cutting assembly, can make the first cutting knife stretch the first telescopic spring under the action of centrifugal force, thereby moving out of the storage bin, so as to achieve the cutting and removal of plant roots wrapped around the sampling drill bit, so as to avoid affecting the sampling process of the sampling drill bit. After the plant roots are cut off by the first cutting knife and the drill blade at the bottom of the sampling drill bit, the longer plant roots can be blocked by the wire mesh, so as to reduce the number of them entering the sample cavity and affecting the sample quantity.

[0025] 2. The soil sampling device for forestry engineering surveying and mapping and its use method can separate and store samples through the separation component, thereby reducing the risk of cross infection between samples. The ejection component and the unloading component can make the unloading process more convenient. At the same time, the unloading component can also cooperate to complete the automatic cleaning of the device when cleaning the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The structure of the present invention is shown in FIG. Figure 1 ;

[0027] Figure 2 The structure of the present invention is shown in FIG. Figure 2 ;

[0028] Figure 3 The structure of the present invention is shown in FIG. Figure 3 ;

[0029] Figure 4 The structure of the present invention is shown in FIG. Figure 4 ;

[0030] Figure 5 This is a schematic diagram of the structure of the sampling drill bit of the present invention when viewed from above;

[0031] Figure 6 The structure of the cutting assembly of the present invention is shown in FIG. Figure 1 ;

[0032] Figure 7 The structure of the cutting assembly of the present invention is shown in FIG. Figure 2 ;

[0033] Figure 8 It is a structural schematic diagram of the separation component of the present invention;

[0034] Figure 9 The structure of the pop-up assembly of the present invention is shown in FIG. Figure 1 ;

[0035] Figure 10 The structure of the pop-up assembly of the present invention is shown in FIG. Figure 2 ;

[0036] Figure 11 It is a schematic diagram of the structure of the sampling assembly of the present invention;

[0037] Figure 12 For the present invention Figure 8 Schematic diagram of the local enlarged structure at point A in the middle.

[0038] In the figure: 1. power mechanism; 11. support frame; 12. drill rod; 13. connecting piece; 14. sampling drill bit; 2. sample chamber; 21. cover plate; 22. first card slot; 23. wire mesh; 24. storage compartment; 25. first telescopic spring; 26. first cutting knife; 27. spring positioning pin; 3. first mounting slot; 31. partition; 32. second mounting slot; 33. electric push rod; 34. extension piece; 35. elastic column; 36. second cutting knife; 4. first through slot; 41. second card slot; 42. fixing plate; 43. second telescopic spring; 44. limit block; 45. toggle piece; 46. second through slot; 5. third mounting slot; 51. lead screw; 52. rotating shaft; 53. screw sleeve; 54. driving arm; 55. push plate; 6. extrusion piece; 61. third through slot. DETAILED DESCRIPTION

[0039] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0040] Embodiment 1: Please refer to Figure 1 , Figure 2 , Figure 5 , Figure 6 and Figure 7 . The present invention provides a technical solution: a soil sampling device for forestry engineering surveying and mapping, including a power mechanism 1, a support frame 11, a drill rod 12, a connecting member 13, and a sampling drill bit 14. The support frame 11 is fixedly installed on both sides of the power mechanism 1. The drill rod 12 is fixedly connected to the output shaft of the power mechanism 1. The connecting member 13 is threadedly connected to the bottom of the drill rod 12. The sampling drill bit 14 is fixedly installed at the bottom of the connecting member 13. A cutting assembly is provided on the lower side of the sampling drill bit 14 for reducing the sampling difficulty of the device. A partition assembly is provided in the inner cavity of the sampling drill bit 14 for preventing cross-infection of samples. A spring-opening assembly and a blanking assembly are provided on the sampling drill bit 14 for convenient sampling.

[0041] The cutting assembly includes a sample chamber 2 opened inside the sampling drill bit 14, and a cover plate 21 is provided on the front side of the sampling drill bit 14;

[0042] A first card slot 22 is opened on the lower side of the sampling drill bit 14. A wire mesh 23 is clamped in the first card slot 22. Storage bins 24 are fixedly installed on both sides of the wire mesh 23. A first telescopic spring 25 is fixedly connected to the inner wall of the storage bin 24. The other end of the first telescopic spring 25 is fixedly connected to a first cutting knife 26. The blade of the first cutting knife 26 is arc-shaped. A positioning hole is opened in the first card slot 22, and a spring positioning pin 27 is clamped in the positioning hole.

[0043] Specifically, during use, first, a controller can be installed on the power mechanism 1, and the controller is electrically connected to the electric push rod 33. Then, sampling drill bits 14 of different specifications are selected according to the required sampling data. After the selection is completed, the sampling drill bit 14 is fixedly connected to the drill rod 12 by using the connecting member 13. Then, the wire mesh 23 is installed in the sampling drill bit 14 through the first card slot 22. Then, the spring positioning pin 27 is inserted into the positioning hole to limit the wire mesh 23 to prevent displacement caused by soil extrusion. Then, the device needs to be moved to the sampling location, and then the power mechanism 1 is started to start drilling and sampling;

[0044] When the power mechanism 1 is started, it will drive the drill pipe 12 to rotate, so that the drill pipe 12 drives the sampling bit 14 to rotate for soil drilling and sampling operations. During the process of the sampling bit 14 drilling and sampling soil, due to the excellent soil fertility and moisture content in forestry and good plant growth, plant roots are likely to exist in the soil. When the sampling bit 14 rotates deep into the soil, it is easy to wrap the plant roots, affecting its further penetration, or it is easy to take the plant roots into the sample chamber 2, resulting in a reduction in the sample volume.

[0045] In the present invention, when the sampling bit 14 rotates, under the action of centrifugal force, the first cutting knife 26 will stretch the first telescopic spring 25, so as to move out of the storage bin 24, realizing the cutting and removal of the plant roots wrapped around the circumferential side of the sampling bit 14, and avoiding its influence on the sampling process of the sampling bit 14. After the plant roots are cut off by the first cutting knife 26 and the drill edge at the bottom of the sampling bit 14, the wire mesh 23 can block the longer plant roots, reducing the number of them entering the sample chamber 2 and affecting the sample volume.

[0046] It should be noted that the middle part of the wire mesh 23 can be arranged by thin steel wires to avoid the blocking structure being too thick and affecting the entry of soil into the sample chamber 2, and the arc-shaped blade body of the first cutting knife 26 can reduce the difficulty of the sampling bit 14 penetrating into the soil.

[0047] Example 2: Please refer to Figures 1 to 4 , Figures 8 to 10 The separation component includes a first installation groove 3 opened inside the sampling bit 14. A separator 31 is movably installed in the first installation groove 3, and a second installation groove 32 is opened on one side inside the sampling bit 14;

[0048] An electric push rod 33 is fixedly installed in the second installation groove 32. The output shaft of the electric push rod 33 is fixedly connected to the top of the separator 31. One end of the separator 31 away from the output shaft of the electric push rod 33 is fixedly connected with an extension member 34, and the other end of the extension member 34 is fixedly connected with an elastic column 35. One end of the elastic column 35 away from the extension member 34 is fixed in the second installation groove 32;

[0049] One side of the notch of the separator 31 is fixedly installed with a second cutting knife 36, and the cutting edge of the second cutting knife 36 faces the driving direction of the separator 31.

[0050] The elastic opening component includes first through grooves 4 opened on the surface of the cover plate 21. The number of the first through grooves 4 is two, and they are respectively on the upper and lower sides of the cover plate 21 and are arranged diagonally;

[0051] Corresponding to the first through groove 4 on the surface of the sampling bit 14, a second card slot 41 is opened. A fixing plate 42 is arranged in the second card slot 41. The surface of the fixing plate 42 is fixedly connected with a second telescopic spring 43, and one end of the second telescopic spring 43 away from the fixing plate 42 is fixedly connected with a limiting block 44;

[0052] The upper and lower sides of the partition 31 are fixedly connected with a toggle member 45, the toggle member 45 is L-shaped, and the end of the toggle member 45 is fixedly connected to the partition 31, and the sampling drill bit 14 is provided with a second through groove 46 adapted to the toggle member 45;

[0053] A clamping plate is disposed on one side of the second clamping slot 41 close to the cover plate 21 , and a limiting groove matched with the clamping plate is formed in the middle of the limiting block 44 .

[0054] After sampling by using a drill bit, the cover of the drill bit is squeezed by the soil during sampling and is difficult to open. It usually needs to be pried open with a tool, which is troublesome to operate. In addition, the inside of the drill bit is usually a straight cylinder, which makes it difficult to separate samples at different depths during sampling. At the same time, it is also more likely to cause cross-infection of samples during sampling.

[0055] On the basis of Example 1, when the sampling operation is completed, the controller starts the electric push rod 33 so that the electric push rod 33 can drive the partition 31, and the second cutting knife 36 can be used to cut the soil on the one hand to reduce the difficulty of sample separation, and on the other hand, the plant roots that may exist in the sample can be further cut again to avoid them being in the dividing line between the two samples, resulting in a gap between the partition 31 and the inner wall of the sampling drill bit 14, causing cross infection of the samples;

[0056] When the partition 31 moves, the elastic column 35 will be stretched, which can assist the partition 31 to reset. After the partition 31 moves, the notch of the partition 31 is in the first installation groove 3, and the surface without the notch can strictly store and separate the sample, thereby improving the accuracy of the sample.

[0057] Furthermore, when the partition 31 moves, the toggle member 45 will move with the partition 31. When the toggle member 45 moves in the second through groove 46, it will drive the limit block 44. When the limit block 44 is separated from the card plate, the cover 21 is released from the limit, making it convenient to open the cover 21 and facilitate sampling.

[0058] Example 3: Please refer to Figure 8 , Figure 11 and Figure 12 The blanking assembly includes a third mounting groove 5 provided inside the sampling drill bit 14, a lead screw 51 is rotatably connected in the third mounting groove 5, a rotating shaft 52 is fixedly installed on the upper end of the lead screw 51, the rotating shaft 52 passes through the third mounting groove 5 and extends out of the outer side of the third mounting groove 5, and a hexagonal groove is provided on the top of the rotating shaft 52;

[0059] The outer surface of the lead screw 51 is threadedly connected with a screw sleeve 53, the number of the screw sleeve 53 is greater than one, a driving arm 54 is movably mounted on the surface of the screw sleeve 53, and a push plate 55 is movably mounted on one end of the driving arm 54 away from the screw sleeve 53;

[0060] A pressing member 6 is fixedly installed on the lower side of the partition member 31. The pressing member 6 is in the shape of a right triangle, and the inclined surface faces the driving direction of the partition member 31. A third through groove 61 adapted to the pressing member 6 is provided inside the sampling drill bit 14.

[0061] The partition member 31 is bent, and a notch adapted to the sample cavity 2 is provided on the surface. The notches are intermittently provided. The position of the push plate 55 corresponds to the notches provided on the surface of the partition member 31.

[0062] As the drill bit penetrates deeper into the soil, the moisture content in the soil will become higher and higher. Since the serrated part at the bottom of the sampling drill bit 14 will block the sample, and the tension between the soil moisture and the inner wall of the sampling drill bit 14 will increase the difficulty of blanking.

[0063] On the basis of Embodiment 2, when the partition member 31 moves, it will drive the pressing member 6 to move, so that the pressing member 6 presses the sample at the lowermost side of the sampling drill bit 14. In this way, the tension between the soil sample and the inner wall of the sampling drill bit 14 can be reduced during blanking, and the blanking difficulty can be reduced.

[0064] When blanking the sample separated by the partition member 31, a hexagonal wrench can be used to rotate the rotating shaft 52, or the hexagonal wrench can be clamped on an electric drill and then inserted into the rotating shaft 52, so that the rotating shaft 52 drives the lead screw 51 to rotate. The lead screw 51 can be used to drive the nut sleeve 53, so that the nut sleeve 53 drives the driving arm 54. The driving arm 54 can be used to drive the push plate 55 to move, so that the push plate 55 drives the sample to move out of the sample cavity 2, which can avoid sample splashing and cross-infection during traditional sampling, and at the same time can realize automatic blanking and improve the convenience of blanking.

[0065] Furthermore, after one sampling, there will be residual samples inside the device, which is likely to reduce the sample accuracy for the next sampling. Therefore, usually the drill bit needs to be cleaned after one sampling. However, it is difficult to clean the corners of the sampling cavity, especially for drill bits with smaller specifications, and the manual cleaning difficulty is even greater.

[0066] In the present invention, when cleaning the device, the cleaning liquid can be directly introduced into the sample cavity 2, and then the rotating shaft 52 is rotated, so that the push plate 55 cleans the partition member 31 and the sample cavity 2. While realizing automatic cleaning, the corners of the sample cavity 2 can still be comprehensively cleaned. For cleaning the push plate 55, after cleaning the partition member 31 and the sample cavity 2, the push plate 55 is stopped at the outlet of the sample cavity 2 and wiped.

[0067] A method for using a soil sampling device for forestry engineering surveying and mapping, using the above-mentioned soil sampling device for forestry engineering surveying and mapping, includes the following steps:

[0068] S1: When in use, the user first needs to place the sampling drill bit 14 at the sampling location, and then start the power mechanism 1 to drill the soil for sampling. When the sampling drill bit 14 gradually penetrates into the soil, the first cutting knife 26 will stretch the first telescopic spring 25 under the action of centrifugal force, move out of the storage bin 24, and cut the plant rhizomes in the soil;

[0069] S2: When sampling is completed, the electric push rod 33 can be started to drive the partition 31, so that the partition 31 separates soil samples from different areas to avoid cross-infection of samples during feeding. At the same time, the toggle member 45 drives the limit block 44 to release the limit of the limit block 44, so as to facilitate the opening of the cover plate 21;

[0070] S3: By inserting the hexagonal wrench into the rotating shaft 52 and rotating the wrench, the lead screw 51 can be driven to rotate, so that the lead screw 51 drives the screw sleeve 53, and the screw sleeve 53 can drive the driving arm 54, so that the driving arm 54 squeezes out the sample, which is convenient for sampling.

[0071] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A soil sampling device for forestry engineering surveying and mapping, comprising a power mechanism (1), a support frame (11), a drill pipe (12), a connecting piece (13) and a sampling drill bit (14). The support frame (11) is fixedly installed on both sides of the power mechanism (1). The drill pipe (12) is fixedly connected to the output shaft of the power mechanism (1). The connecting piece (13) is threadedly connected to the bottom of the drill pipe (12). The sampling drill bit (14) is fixedly installed at the bottom of the connecting piece (13), and it is characterized in that: A cutting assembly is arranged on the lower side of the sampling drill bit (14), and the cutting assembly is used to reduce the difficulty of sampling by the device; a partition assembly is arranged in the inner cavity of the sampling drill bit (14), and the partition assembly is used to avoid cross-infection of samples; a spring-opening assembly and a material discharge assembly are arranged on the sampling drill bit (14), and the spring-opening assembly and the material discharge assembly are used to facilitate sampling; The partition assembly comprises a first mounting groove (3) provided inside the sampling drill bit (14), a partition member (31) being movably installed in the first mounting groove (3), and a second mounting groove (32) being provided on one side inside the sampling drill bit (14); an electric push rod (33) being fixedly installed in the second mounting groove (32), an output shaft of the electric push rod (33) being fixedly connected to the top of the partition member (31), an end of the partition member (31) away from the output shaft of the electric push rod (33) being fixedly connected to an extension member (34), the other end of the extension member (34) being fixedly connected to an elastic column (35), and an end of the elastic column (35) away from the extension member (34) being fixedly connected to the second mounting groove (32); A second cutting knife (36) is fixedly mounted on one side of the notch of the partition (31), and the blade of the second cutting knife (36) faces the driving direction of the partition (31).

2. The soil sampling device for forestry engineering surveying and mapping according to claim 1, characterized in that: The cutting assembly comprises a sample cavity (2), the sample cavity (2) being arranged inside a sampling drill bit (14), and a cover plate (21) being arranged on the front side of the sampling drill bit (14); a first clamping groove (22) being arranged on the lower side of the sampling drill bit (14), a wire mesh (23) being clamped in the first clamping groove (22), storage bins (24) being fixedly mounted on both sides of the wire mesh (23), a first telescopic spring (25) being fixedly connected to the inner wall of the storage bin (24), a first cutting knife (26) being fixedly connected to the other end of the first telescopic spring (25), and a blade of the first cutting knife (26) being arc-shaped, a positioning hole being arranged in the first clamping groove (22), and a spring positioning pin (27) being clamped in the positioning hole.

3. The soil sampling device for forestry engineering surveying and mapping according to claim 2, characterized in that: The pop-up assembly comprises a first through slot (4) formed on the surface of the cover plate (21), wherein the number of the first through slots (4) is two and they are respectively arranged diagonally on the upper and lower sides of the cover plate (21); a second clamping slot (41) is formed on the surface of the sampling drill bit (14) at a position corresponding to the first through slot (4); a fixing plate (42) is arranged in the second clamping slot (41); a second telescopic spring (43) is fixedly connected to the surface of the fixing plate (42); an end of the second telescopic spring (43) away from the fixing plate (42) is fixedly connected to a limiting block (44); a toggle member (45) is fixedly connected to the upper and lower sides of the partition (31); the toggle member (45) is L-shaped, and the end of the toggle member (45) is fixedly connected to the partition (31); and a second through slot (46) adapted to the toggle member (45) is formed inside the sampling drill bit (14).

4. The soil sampling device for forestry engineering surveying and mapping according to claim 3, characterized in that: The material removal assembly comprises a third mounting groove (5) provided inside the sampling drill bit (14), a lead screw (51) being rotatably connected in the third mounting groove (5), a rotating shaft (52) being fixedly installed on the upper end of the lead screw (51), the rotating shaft (52) passing through the third mounting groove (5) and extending out of the outer side of the third mounting groove (5), and a hexagonal groove being provided on the top of the rotating shaft (52); a screw sleeve (53) being threadedly connected to the outer surface of the lead screw (51), the number of the screw sleeves (53) being greater than one, a driving arm (54) being movably installed on the surface of the screw sleeve (53), and a push plate (55) being movably installed on one end of the driving arm (54) away from the screw sleeve (53).

5. The soil sampling device for forestry engineering surveying and mapping according to claim 4, characterized in that: An extrusion piece (6) is fixedly mounted on the lower side of the partition (31); the extrusion piece (6) is in the shape of a right-angled triangle, with an inclined surface facing the driving direction of the partition (31); and a third through groove (61) adapted to the extrusion piece (6) is provided inside the sampling drill bit (14).

6. The soil sampling device for forestry engineering surveying and mapping according to claim 5, characterized in that: The partition (31) is curved, and has a surface provided with a notch adapted to the sample cavity (2), the notch being provided intermittently, and the position of the push plate (55) corresponds to the notch provided on the surface of the partition (31).

7. The soil sampling device for forestry engineering surveying and mapping according to claim 6, characterized in that: A clamping plate is provided on one side of the second clamping slot (41) close to the cover plate (21), and a limiting slot matching the clamping plate is provided in the middle of the limiting block (44).

8. A method for using a soil sampling device for forestry engineering surveying and mapping, using the soil sampling device for forestry engineering surveying and mapping as described in claim 7, characterized in that: The following steps are involved: S1: When in use, the user first needs to place the sampling drill bit (14) at the sampling location, and then start the power mechanism (1) to drill the soil for sampling. When the sampling drill bit (14) gradually penetrates into the soil, the first cutting knife (26) will stretch the first telescopic spring (25) under the action of centrifugal force, move out of the storage bin (24), and cut the plant rhizomes in the soil; S2: When sampling is completed, the electric push rod (33) can be started to drive the partition (31), so that the partition (31) separates soil samples from different areas to avoid cross-infection of samples during material feeding. At the same time, the toggle member (45) drives the limit block (44) to release the limit of the limit block (44), so as to facilitate the opening of the cover plate (21); S3: By inserting a hexagonal wrench into the rotating shaft (52) and rotating the wrench, the lead screw (51) can be driven to rotate, so that the lead screw (51) drives the screw sleeve (53), and the screw sleeve (53) can be used to drive the driving arm (54), so that the driving arm (54) squeezes out the sample, thereby facilitating sampling.

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