Soil sampling device for forestry engineering surveying and mapping and use method

Abstract

The invention relates to the technical field of soil sampling, in particular to a soil sampling device for forestry engineering surveying and mapping and a using method.The soil sampling device comprises a power mechanism, handrails, a drill rod, a connecting piece and a sampling drill bit, the handrails are fixedly installed on the two sides of the power mechanism, and the drill rod is fixedly connected with an output shaft of the power mechanism; the connecting piece is in threaded connection with 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 used for reducing the sampling difficulty of the device, and a separation assembly is arranged in an inner cavity of the sampling drill bit and used for separating the sampling drill bit. According to the soil sampling device for forestry engineering surveying and mapping and the using method, samples can be separated and stored through the separation assembly, the risk of cross infection between the samples is reduced, the discharging process can be more convenient and faster through the bouncing-off assembly and the discharging assembly, and meanwhile, the discharging assembly can be matched to complete automatic cleaning of the device when the device is cleaned.

Description

Technical Field

[0001] The invention relates to the technical field of soil sampling, and in particular to a soil sampling device for forestry engineering surveying and mapping and a use method thereof. Background Art

[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 forestry ecological environment. The traditional sampling method is to use a drill rod and a sampling drill bit to take samples, penetrate deep into the soil through the drill bit, and store the soil in the sample cavity.

[0003] However, in soil mapping of forestry projects, the soil fertility and moisture used for forestry are excellent, plants grow well, and plant roots are easily present in the soil. When the sampling drill bit goes deep into the soil, it is easy to wrap the plant roots when the drill bit rotates, affecting the continued penetration of the drill bit, or it is easy to collect the plant roots into the sample cavity, resulting in a reduction in sample volume, thus affecting soil sampling. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a soil sampling device for forestry engineering surveying and mapping and a method of use, which solves the problems raised in the above-mentioned background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a soil sampling device for forestry engineering surveying and mapping, comprising a power mechanism, a support, a drill rod, a connecting piece and a sampling drill bit, the support being fixedly mounted on both sides of the power mechanism, the drill rod being fixedly connected to the output shaft of the power mechanism, the connecting piece being threadedly connected to the bottom of the drill rod, the sampling drill bit being fixedly mounted on the bottom of the connecting piece, a cutting assembly being arranged on the lower side of the sampling drill bit, the cutting assembly being used to reduce the sampling difficulty of the device, a partition assembly being arranged in the inner cavity of the sampling drill bit, and the partition assembly being used to avoid cross-infection of samples, and a pop-up assembly and a feeding assembly being arranged on the sampling drill bit, the pop-up assembly and the feeding assembly being used to facilitate 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 provided on the front side of the sampling drill bit; A first card slot is provided on the lower side of the sampling drill bit, a wire mesh is clamped in the first card slot, storage bins are fixedly installed on both sides of the wire mesh, a first telescopic spring is fixedly connected to the inner wall of the storage bin, a first cutting knife is fixedly connected to the other end of the first telescopic spring, and the blade of the first cutting knife is arc-shaped, a positioning hole is provided in the first card slot, a spring positioning pin is clamped in the positioning hole.

[0007] Optionally, the partition assembly includes a first mounting groove opened inside the sampling drill bit, a partition is movably installed in the first mounting groove, and a second mounting groove is opened on one side inside the sampling drill bit; An electric push rod is fixedly installed in the second mounting groove, and the output shaft of the electric push rod is fixedly connected to the top of the partition. An end of the partition away from the output shaft of the electric push rod is fixedly connected to an extension piece, and the other end of the extension piece is fixedly connected to an elastic column. An end of the elastic column away from the extension piece is fixed in the second mounting groove.

[0008] Optionally, the pop-up assembly includes a first through slot opened on the surface of the cover plate, and the number of the first through slots is two, and they are respectively arranged diagonally on the upper and lower sides of the cover plate; A second slot is provided on the surface of the sampling drill bit at a position corresponding to the first through slot, a fixing plate is provided in the second slot, a second telescopic spring is fixedly connected to the surface of the fixing plate, and one end of the second telescopic spring away from the fixing plate is fixedly connected to a limiting block; The upper and lower sides of the partition are fixedly connected with a toggle piece, the toggle piece is L-shaped, and the end of the toggle piece is fixedly connected to the partition, and a second through groove adapted to the toggle piece is provided inside the sampling drill bit.

[0009] Optionally, the blanking assembly includes a third mounting groove opened inside the sampling drill bit, a lead screw is rotatably connected in the third mounting groove, a rotating shaft is fixedly installed on the upper end of the lead screw, the rotating shaft passes through the third mounting groove and extends out of the outside of the third mounting groove, and a hexagonal groove is opened on the top of the rotating shaft; The outer surface of the lead screw is threadedly connected with a screw sleeve, the number of the screw sleeve is greater than one, a driving arm is movably mounted on the surface of the screw sleeve, and a push plate is movably mounted on one end of the driving arm away from the screw sleeve.

[0010] Optionally, an extrusion piece is fixedly mounted on the lower side of the partition, the extrusion piece is in the shape of a right-angle triangle, and the inclined surface faces the driving direction of the partition, and a third through groove matched with the extrusion piece is opened inside the sampling drill bit.

[0011] Optionally, the partition is curved, and a notch adapted to the sample cavity is provided on the surface thereof, the notch is provided intermittently, and the position of the push plate corresponds to the notch provided on the surface of the partition.

[0012] Optionally, a second cutting knife is fixedly mounted on one side of the notch of the partition, and the blade of the second cutting knife faces the driving direction of the partition.

[0013] 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.

[0014] 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: 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; 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; 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.

[0015] 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: 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.

[0016] 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

[0017] Figure 1 The structure of the present invention is shown in FIG. Figure 1 ; Figure 2 The structure of the present invention is shown in FIG. Figure 2 ; Figure 3 The structure of the present invention is shown in FIG. Figure 3 ; Figure 4 The structure of the present invention is shown in FIG. Figure 4 ; Figure 5 This is a schematic diagram of the structure of the sampling drill bit of the present invention when viewed from above; Figure 6 The structure of the cutting assembly of the present invention is shown in FIG. Figure 1 ; Figure 7 The structure of the cutting assembly of the present invention is shown in FIG. Figure 2 ; Figure 8 It is a structural schematic diagram of the separation component of the present invention; Fig. 9 The structure of the pop-up assembly of the present invention is shown in FIG. Figure 1 ; Fig.10 The structure of the pop-up assembly of the present invention is shown in FIG. Figure 2 ; Fig.11 It is a schematic diagram of the structure of the sampling assembly of the present invention; Fig.12 For the present invention Figure 8 Schematic diagram of the local enlarged structure at point A in the middle.

[0018] 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

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] Example 1: Please refer to Figure 1 , Figure 2 , Figure 5 , Figure 6 and Figure 7The present invention provides a technical solution: a soil sampling device for forestry engineering surveying and mapping, comprising a power mechanism 1, a support frame 11, a drill rod 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 rod 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 rod 12, the sampling drill bit 14 is fixedly installed at the bottom of the connecting piece 13, a cutting assembly is arranged on the lower side of the sampling drill bit 14, the cutting assembly is used to reduce the sampling difficulty of 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, and a pop-up assembly and a feeding assembly are arranged on the sampling drill bit 14, and the pop-up assembly and the feeding assembly are used for convenient sampling.

[0021] The cutting assembly includes a sample cavity 2, which is opened inside the sampling drill bit 14, and a cover plate 21 is provided on the front side of the sampling drill bit 14; A first card slot 22 is provided 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, a first telescopic spring 25 is fixedly connected to the other end of the first telescopic spring 25, and a first cutting knife 26 is fixedly connected, and the blade of the first cutting knife 26 is arc-shaped, a positioning hole is provided in the first card slot 22, a spring positioning pin 27 is clamped in the positioning hole.

[0022] Specifically, when in use, firstly, a controller can be installed on the power mechanism 1, and the controller is electrically connected to the electric push rod 33, and 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 piece 13, and then the wire mesh 23 is installed in the sampling drill bit 14 through the first card slot 22, and then the spring positioning pin 27 is inserted into the positioning hole to limit the wire mesh 23 to prevent the soil from squeezing it and causing displacement. Then, the device needs to be moved to the sampling location, and then the power mechanism 1 is started to start drilling soil sampling; When the power mechanism 1 is started, it will drive the drill rod 12 to rotate, so that the drill rod 12 drives the sampling drill bit 14 to rotate, and the soil drilling sampling operation is performed. During the soil drilling sampling process of the sampling drill bit 14, since the soil fertility and water content of the forestry are relatively good, the plants grow well, and plant roots and stems are likely to exist in the soil. When the sampling drill bit 14 rotates deeply in the soil, it is easy to wrap the plant roots and stems, affecting its continued penetration, or it is easy to collect the plant roots and stems into the sample chamber 2, resulting in a reduction in the sample amount; In the present invention, when the sampling drill bit 14 rotates, the first cutting knife 26 will stretch the first telescopic spring 25 under the action of centrifugal force, so as to move out of the storage bin 24, so as to cut and remove the plant roots wrapped around the sampling drill bit 14, so as to avoid affecting the sampling process of the sampling drill bit 14. After the plant roots are cut by the first cutting knife 26 and the drill blade at the bottom of the sampling drill bit 14, the wire mesh 23 can be used to block the longer plant roots, so as to reduce the number of them entering the sample chamber 2 and affecting the sample quantity. It should be noted that the middle part of the wire mesh 23 can be laid with fine steel wire to prevent the blocking structure from being too thick and affecting the soil entering the sample cavity 2, and the arc-shaped blade of the first cutting knife 26 can reduce the difficulty of the sampling drill bit 14 penetrating into the soil.

[0023] Example 2: Please refer to Figures 1 to 4 , Figures 8 to 10 The partition assembly includes a first mounting groove 3 provided inside the sampling drill bit 14, a partition 31 is movably installed in the first mounting groove 3, and a second mounting groove 32 is provided on one side inside the sampling drill bit 14; An electric push rod 33 is fixedly installed in the second installation groove 32, and the output shaft of the electric push rod 33 is fixedly connected to the top of the partition 31. An extension piece 34 is fixedly connected to one end of the partition 31 away from the output shaft of the electric push rod 33, and an elastic column 35 is fixedly connected to the other end of the extension piece 34. The end of the elastic column 35 away from the extension piece 34 is fixed in the second installation 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 .

[0024] The pop-up assembly includes a first through slot 4 formed on the surface of the cover plate 21. The number of the first through slots 4 is two, and they are respectively disposed diagonally on the upper and lower sides of the cover plate 21. A second slot 41 is provided on the surface of the sampling drill bit 14 at a position corresponding to the first through slot 4, a fixing plate 42 is provided in the second slot 41, a second telescopic spring 43 is fixedly connected to the surface of the fixing plate 42, and one end of the second telescopic spring 43 away from the fixing plate 42 is fixedly connected to a limiting block 44; 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; 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 .

[0025] 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. 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; 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. 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.

[0026] Example 3: Please refer to Figure 8 , Fig.11 and Fig.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; 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; 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 triangle, and the inclined surface faces the driving direction of the partition 31. A third through groove 61 adapted to the extrusion piece 6 is provided inside the sampling drill bit 14. The partition 31 is curved, and has a surface with slots adapted to the sample cavity 2 . The slots are intermittently provided, and the position of the push plate 55 corresponds to the slots provided on the surface of the partition 31 .

[0027] As the drill bit goes deeper into the soil, the moisture content in the soil will become higher and higher. The serrated part at the bottom of the sampling drill bit 14 will block the sample, and the soil moisture and the tension of the inner wall of the sampling drill bit 14 will increase the difficulty of cutting. On the basis of Example 2, when the partition 31 moves, it will drive the extrusion member 6 to move, so that the extrusion member 6 squeezes the sample at the bottom of the sampling drill bit 14, so that the tension between the soil sample and the inner wall of the sampling drill bit 14 can be reduced during material feeding, thereby reducing the difficulty of material feeding; When unloading the sample separated by the partition 31, the rotating shaft 52 can be rotated by a hexagonal wrench, 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, and the lead screw 51 can drive the screw sleeve 53, so that the screw sleeve 53 drives the driving arm 54, and the driving arm 54 can drive the push plate 55 to move, so that the push plate 55 drives the sample to move out of the sample chamber 2, which can avoid the splashing of samples during traditional sampling and cause cross infection, and can realize automatic unloading, thereby improving the convenience of unloading; Furthermore, after one sampling, there will be residual samples inside the device, which may reduce the accuracy of the next sampling. Therefore, the drill bit usually needs to be cleaned after one sampling. However, the corners of the sampling cavity are difficult to clean, especially for drill bits with smaller specifications, which are more difficult to clean manually. In the present invention, when cleaning the device, the cleaning liquid can be directly introduced into the sample chamber 2, and then the rotating shaft 52 is rotated to allow the push plate 55 to clean the partition 31 and the sample chamber 2. While achieving automatic cleaning, the corners of the sample chamber 2 can still be fully cleaned. For the cleaning of the push plate 55, after the partition 31 and the sample chamber 2 are cleaned, the push plate 55 is left at the outlet of the sample chamber 2 for scrubbing.

[0028] 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, comprising the following steps: 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 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 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.

[0029] 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 rod (12), a connecting piece (13) and a sampling drill bit (14), wherein the support frame (11) is fixedly mounted on both sides of the power mechanism (1), the drill rod (12) is fixedly connected to an output shaft of the power mechanism (1), the connecting piece (13) is threadedly connected to the bottom of the drill rod (12), and the sampling drill bit (14) is fixedly mounted on the bottom of the connecting piece (13), 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.

2. A 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 opened 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) is provided at the lower side of the sampling drill bit (14), a wire mesh (23) is clamped in the first clamping groove (22), storage bins (24) are fixedly mounted 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), a first cutting knife (26) is fixedly connected to the other end of the first telescopic spring (25), and the blade of the first cutting knife (26) is arc-shaped, a positioning hole is provided in the first clamping groove (22), and a spring positioning pin (27) is clamped in the positioning hole.

3. A soil sampling device for forestry engineering surveying and mapping according to claim 2, characterized in that: The partition assembly comprises a first installation groove (3) provided inside the sampling drill bit (14), a partition (31) being movably installed in the first installation groove (3), and a second installation groove (32) being provided on one side inside the sampling drill bit (14); An electric push rod (33) is fixedly mounted in the second mounting groove (32); an output shaft of the electric push rod (33) is fixedly connected to the top of the partition (31); an end of the partition (31) away from the output shaft of the electric push rod (33) is fixedly connected to an extension piece (34); the other end of the extension piece (34) is fixedly connected to an elastic column (35); and an end of the elastic column (35) away from the extension piece (34) is fixed in the second mounting groove (32).

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

5. A soil sampling device for forestry engineering surveying and mapping according to claim 4, characterized in that: The blanking 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 at 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 at the top of the rotating shaft (52); 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).

6. A soil sampling device for forestry engineering surveying and mapping according to claim 5, 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).

7. A soil sampling device for forestry engineering surveying and mapping according to claim 6, 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).

8. A soil sampling device for forestry engineering surveying and mapping according to claim 7, characterized in that: 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).

9. A soil sampling device for forestry engineering surveying and mapping according to claim 8, 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).

10. 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 claimed in claim 9, 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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