Arbor bark sampling device and method

Abstract

The invention discloses an arbor bark sampling device and method, and relates to the technical field of arbor sampling. The device comprises a first semicircular plate, a first driving arc plate is coaxially and slidably mounted on an inner ring of the first semicircular plate, a first tooth structure is arranged on the outer wall of the first driving arc plate, a sampling mechanism is mounted on the top surface of the first driving arc plate, and a positioning mechanism is mounted on the bottom surface of the first driving arc plate; a second driving arc plate is coaxially mounted on an inner ring of the second semicircular plate in a sliding manner, a second tooth structure is arranged on the outer wall of the second driving arc plate, a sampling mechanism is mounted on the top surface of the second driving arc plate, and a positioning mechanism is mounted on the bottom surface of the second driving arc plate; the first semicircular plate and the second semicircular plate are connected through a connecting mechanism to form a complete circular ring, and the first driving arc plate and the second driving arc plate form a complete circular ring through the two connecting arc plates; the purpose of collecting standard annular bark of a high tree is achieved.

Description

Technical Field

[0001] This invention relates to the field of tree sampling technology, specifically, to a tree bark sampling device and method. Background Technology

[0002] Tree bark sampling is a key technique in forestry, ecology, and plant pathology research, aiming to obtain information such as tree rings, physiological activities, pests and diseases, or environmental pollutants by analyzing bark tissue.

[0003] Sampling methods include drilling, which involves vertically drilling a cylindrical sample containing bark, cambium, and xylem using a growth cone, suitable for annual ring or physiological analysis; scraping, which involves scraping the surface bark (such as phloem or periderm) with a sterilized blade for microbial or chemical component detection; and ring sampling, which involves cutting ring-shaped strips of bark to study cambium activity.

[0004] Currently, the challenge in performing ring sampling lies in obtaining standard ring-shaped samples from taller trees. This is crucial to minimizing measurement errors caused by non-standard sampling during subsequent sample analysis. Summary of the Invention

[0005] The purpose of this invention is to provide a tree bark sampling device to achieve the purpose of collecting standard ring-shaped bark samples from taller trees.

[0006] To achieve the above objectives, the present invention employs the following technical means: A tree bark sampling device, comprising: The first semicircular ring plate has a first driving arc plate slidably mounted on its inner ring. The outer wall of the first driving arc plate is provided with a first tooth structure. A sampling mechanism is installed on the top surface of the first driving arc plate, and a positioning mechanism is installed on the bottom surface of the first driving arc plate. The second semicircular ring plate has a second driving arc plate slidably mounted on its inner ring. The outer wall of the second driving arc plate is provided with a second tooth structure. A sampling mechanism is installed on the top surface of the second driving arc plate, and a positioning mechanism is installed on the bottom surface of the second driving arc plate. A connecting arc plate, with its two ends detachably connected to the first driving arc plate and the second driving arc plate respectively, is used to connect the first driving arc plate and the second driving arc plate. The outer wall of the connecting arc plate is provided with a third tooth structure. The sampling end of the sampling mechanism is set toward the axis of the first semi-circular ring plate, and the positioning end of the positioning mechanism is set toward the axis of the first semi-circular ring plate. The first semicircular ring plate and the second semicircular ring plate are connected by a connecting mechanism to form a complete ring. The first driving arc plate and the second driving arc plate are connected by two connecting arc plates to form a complete ring. The first tooth structure, the second tooth structure and the third tooth structure are spliced ​​together to form a complete and continuous ring tooth structure. A drive mechanism is installed on the top surface of the first semi-circular plate. The drive mechanism is constructed with drive teeth that mesh with the circular tooth structure.

[0007] Preferably, the curvature of the first driving arc plate is smaller than that of the first semi-circular ring plate, the inner wall of the first semi-circular ring plate is coaxially constructed with a first sliding groove, and the outer wall of the first driving arc plate is provided with a first slider that is slidably disposed in the first sliding groove. The curvature of the second driving arc plate is smaller than that of the second semi-circular ring plate. The inner wall of the second semi-circular ring plate is coaxially constructed with a second sliding groove, and the outer wall of the second driving arc plate is provided with a second slider that is slidably disposed in the second sliding groove. After the first semicircular ring plate and the second semicircular ring plate are spliced ​​together, the first sliding groove and the second sliding groove are connected.

[0008] Furthermore, the connecting arc plate includes an arc plate, the outer wall of the arc plate is constructed with a third tooth structure, and the two ends of the arc plate are equipped with locking blocks. Both ends of the first driving arc plate and the second driving arc plate are provided with an embedded slot with an open top surface, and the bottom end of the embedded slot is closed.

[0009] Furthermore, the connecting mechanism includes a through slot, an insertion rod, and a positioning pin; The insertion slot is located at the end of the first semi-circular ring plate. The insertion slot is horizontally set and extends in a straight line. The insertion slot passes through the arc-shaped side wall of the first semi-circular ring plate. The insertion slot has a pin hole at the through-hole side wall of the arc-shaped side wall. The insertion rod is located at the end of the second semi-circular ring plate. The insertion rod is parallel to the insertion through groove. The side of the insertion rod away from the second semi-circular ring plate is provided with an insertion hole parallel to the pin hole. The insertion rod is inserted into the through slot, and the positioning pin is inserted through the insertion hole and into the pin hole to complete the positioning of the first and second semicircular ring plates.

[0010] Furthermore, an indicator is constructed in the center of the top surface of the connecting arc plate, with the indicator facing the connecting abutment surface between the first semicircular ring plate and the second semicircular ring plate.

[0011] Furthermore, the sampling mechanism includes a mounting plate fixedly installed on the top surface of the first or second driving arc plate. The mounting plate extends vertically upward and is provided with a first cutting mechanism and a second cutting mechanism in sequence along the vertical direction.

[0012] Furthermore, the first cutting mechanism includes a first positioning plate fixedly mounted on the mounting plate and a first horizontal bar that slides through the first positioning plate and the mounting plate. A blade is mounted on one end of the first horizontal bar that extends toward the axis of the first drive arc plate or the second drive arc plate. Several vertically penetrating first positioning holes are arranged on the first horizontal bar along its extension direction. The top surface of the first positioning plate is constructed with a first insertion hole. A first positioning shaft is disassembled and installed in the first insertion hole. The first positioning shaft passes through the first insertion hole and the first positioning hole.

[0013] Furthermore, the mounting plate is constructed with a horizontally penetrating and vertically extending displacement groove. The second cutting mechanism includes a second positioning plate slidably disposed within the displacement groove. A threaded rod is rotatably mounted on the top surface of the second positioning plate. The threaded rod is vertically upward and penetrates the mounting plate. The threaded rod is threadedly connected to the mounting plate. A horizontally disposed second horizontal rod is slidably mounted within the second positioning plate. A blade is mounted on one end of the second horizontal rod extending axially toward the first or second driving arc plate. Several vertically penetrating second positioning holes are arranged along the extension direction of the second horizontal rod. The top surface of the second positioning plate is constructed with a second insertion hole. A second positioning shaft is disassembled and installed in the second insertion hole. The second positioning shaft is disposed through the second insertion hole and a second positioning hole.

[0014] Furthermore, the positioning mechanism includes a fixing plate installed on the bottom surface of the first semicircular ring plate or the second semicircular ring plate. A support rod is threaded onto the fixing plate. The support rod is horizontally positioned, and one end of the support rod is constructed as a conical structure. The conical end of the conical structure is positioned towards the axis of the first semicircular ring plate or the second semicircular ring plate. The outer wall of the support rod is constructed with indicator marks.

[0015] In addition, this application also relates to a method for sampling tree bark, which uses the aforementioned tree bark sampling device for sampling.

[0016] When using the bark sampling device of this application to perform annular bark sampling on tall trees, an annular base coaxially aligned with the tree can be formed during assembly. The first and second semi-circular ring plates are joined together by a connecting mechanism to form the annular base. This allows the entire device to be installed at the desired sampling location for normally growing trees. After the first and second semi-circular ring plates are joined, a positioning mechanism ensures they are suspended on the tree trunk. After installation, a connecting arc plate is installed between the first and second driving arc plates, connecting them to form a circular tooth structure with a complete toothed structure. The first, second, and connecting arc plates constitute a complete ring. Thus, under the action of the driving mechanism, when the driving mechanism rotates, the meshing of the teeth allows the formed complete ring to rotate around its axis. Thus, the sampling mechanism constructed on the first and second driving arc plates can rotate and follow the movement. When the sampling cutting end of the sampling mechanism acts on the bark, it can follow the rotation of the aforementioned complete ring to perform standard annular sampling of the bark. After sampling is completed, the first and second semi-circular plates can be disassembled for complete storage of the device. Furthermore, the annular bark sampling device of this application can also be well adapted to taller trees. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention.

[0018] Figure 2 This is a front view structural diagram of the present invention.

[0019] Figure 3 This is a schematic diagram of the exploded structure of the present invention.

[0020] Figure 4 This is a schematic diagram of the cross-sectional structure of the present invention.

[0021] Among them, 1-first semi-circular ring plate, 2-first driving arc plate, 3-first tooth structure, 4-sampling mechanism, 5-positioning mechanism, 6-second semi-circular ring plate, 7-second driving arc plate, 8-second tooth structure, 9-connecting arc plate, 10-third tooth structure, 11-driving mechanism, 12-driving tooth structure, 13-first sliding groove, 14-first slider, 15-second sliding groove, 16-second slider, 17-arc plate, 18-block, 19-embedded slot, 20-through groove, 21-insertion rod, 22-positioning pin, 23-insertion hole, 24-mounting plate, 25-first positioning plate, 26-first horizontal rod, 27-blade, 28-first positioning hole, 29-first positioning shaft, 30-displacement groove, 31-second positioning plate, 32-threaded rod, 33-second horizontal rod, 34-second positioning hole, 35-second positioning shaft, 36-fixed plate, 37-support rod. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in this invention can be combined with each other.

[0025] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0026] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0028] Please refer to Figure 1 As shown, a tree bark sampling device includes: The first semicircular ring plate 1 has a first driving arc plate 2 slidably mounted on its inner ring. The outer wall of the first driving arc plate 2 is provided with a first tooth structure 3. The top surface of the first driving arc plate 2 is equipped with a sampling mechanism 4, and the bottom surface of the first driving arc plate 2 is equipped with a positioning mechanism 5. The second semicircular ring plate 6 has a second driving arc plate 7 slidably mounted on its inner ring. The outer wall of the second driving arc plate 7 is provided with a second tooth structure 8. The top surface of the second driving arc plate 7 is equipped with a sampling mechanism 4, and the bottom surface of the second driving arc plate 7 is equipped with a positioning mechanism 5. The connecting arc plate 9 is detachably connected to the first driving arc plate 2 and the second driving arc plate 7 at both ends, and is used to connect the first driving arc plate 2 and the second driving arc plate 7. The outer wall of the connecting arc plate 9 is provided with a third tooth structure 10. The sampling end of the sampling mechanism 4 is set toward the axis of the first semi-circular ring plate 1, and the positioning end of the positioning mechanism 5 is set toward the axis of the first semi-circular ring plate 1. The first semicircular ring plate 1 and the second semicircular ring plate 6 are connected by a connecting mechanism to form a complete ring. The first driving arc plate 2 and the second driving arc plate 7 are connected by two connecting arc plates 9 to form a complete ring. The first tooth structure 3, the second tooth structure 8 and the third tooth structure 10 are spliced ​​together to form a complete and continuous ring tooth structure. A drive mechanism 11 is mounted on the top surface of the first semi-circular plate 1. The drive mechanism 11 is constructed with a drive tooth structure 12 that meshes with the circular tooth structure.

[0029] In this embodiment, the drive mechanism 11 is a rotating shaft whose rotation axis is parallel to the axis of the first semi-circular plate 1 and is rotatably disposed on the top surface of the first semi-circular plate 1. The outer wall of the rotating shaft is configured with a drive tooth structure 12 around its axis for meshing with the circular tooth structure.

[0030] Thus, when using the bark sampling device of this application to perform annular bark sampling on tall trees, an annular base coaxially aligned with the tree can be formed during assembly. The first semi-circular ring plate 1 and the second semi-circular ring plate 6 are spliced ​​together by a connecting mechanism to form the annular base. For normally growing trees, the entire device can be erected at the sampling location as needed. After the first semi-circular ring plate 1 and the second semi-circular ring plate 6 are spliced ​​together, the positioning mechanism 5 ensures that the first semi-circular ring plate 1 and the second semi-circular ring plate 6 are suspended on the tree trunk through contact with the tree surface. After erection, a connecting arc plate 9 is installed between the first driving arc plate 2 and the second driving arc plate 7, connecting the first driving arc plate 2 and the second driving arc plate 7 to form a circular tooth structure with a complete tooth structure. The first driving arc plate 2, the second driving arc plate 7, and the connecting arc plate 9 constitute a complete annulus. Thus, under the action of the drive mechanism 11, when the drive mechanism 11 rotates, the meshing of the tooth structure allows the formed complete ring to rotate around its axis. In this way, the sampling mechanism 4, constructed on the first drive arc plate 2 and the second drive arc plate 7, can rotate and follow the movement. When the sampling cutting end of the sampling mechanism 4 acts on the bark, it can follow the rotation of the aforementioned complete ring to perform standard annular sampling of the bark. After sampling is completed, the first semi-circular plate 1 and the second semi-circular plate 6 can be disassembled for complete storage of the device. Furthermore, the annular bark sampling device of this application can also be well adapted for taller trees.

[0031] For the first driving arc plate 2 and the second driving arc plate 7, please also consider... Figure 4 As shown, the arc of the first driving arc plate 2 is smaller than the arc of the first semi-circular ring plate 1. The inner wall of the first semi-circular ring plate 1 is coaxially constructed with a first sliding groove 13, and the outer wall of the first driving arc plate 2 is provided with a first slider 14 that is slidably disposed in the first sliding groove 13. The arc of the second driving arc plate 7 is smaller than the arc of the second semi-circular ring plate 6. The inner wall of the second semi-circular ring plate 6 is coaxially constructed with a second sliding groove 15. The outer wall of the second driving arc plate 7 is provided with a second slider 16 that is slidably disposed in the second sliding groove 15. After the first semicircular ring plate 1 and the second semicircular ring plate 6 are spliced ​​together, the first sliding groove 13 and the second sliding groove 15 are connected.

[0032] Thus, after the splicing is completed, a buffer space is formed between the end of the first slider 14 and the end of the second slider 16 within the sliding channel formed by the splicing of the first groove 13 and the second groove 15. This buffer space ensures that when disassembly is required, after the connecting arc plate 9 is aligned with the splicing surfaces of the first semicircular ring plate 1 and the second semicircular ring plate 6, the first slider 14 and the second slider 16 can be completely accommodated within the first groove 13 and the second groove 15, respectively. This effectively prevents the first slider 14 from remaining in the second groove 15 or the second slider 16 from remaining in the first groove 13 when separating the first semicircular ring plate 1 and the second semicircular ring plate 6, thus avoiding the situation where the first semicircular ring plate 1 and the second semicircular ring plate 6 cannot be smoothly separated.

[0033] Furthermore, regarding the specific connection arc plate 9, please refer to... Figure 3 As shown, the connecting arc plate 9 includes an arc plate 17, the outer wall of the arc plate 17 has a third tooth structure 10, and the two ends of the arc plate 17 are equipped with locking blocks 18. The two ends of the first driving arc plate 2 and the second driving arc plate 7 are provided with an embedded slot 19 with an open top surface, and the bottom end of the embedded slot 19 is closed.

[0034] In this way, by assembling from top to bottom, the first driving arc plate 2 and the second driving arc plate 7 can be stably connected by the gravity of the connecting arc plate 9 after assembly.

[0035] In addition, for the connecting mechanism used to connect the first semicircular ring plate 1 and the second semicircular ring plate 6, the connecting mechanism includes a through groove 20, an insertion rod 21 and a positioning pin 22. The insertion slot 20 is constructed at the end of the first semi-circular ring plate 1. The insertion slot 20 is horizontally set and extends in a straight line. The insertion slot 20 is inserted through the arc-shaped side wall of the first semi-circular ring plate 1. The insertion slot 20 is provided with a pin hole at the through-hole side wall of the arc-shaped side wall. The insertion rod 21 is located at the end of the second semi-circular ring plate 6. The insertion rod 21 is arranged parallel to the insertion through groove 20. The side of the insertion rod 21 away from the second semi-circular ring plate 6 is provided with an insertion hole 23 parallel to the pin hole. Insert the insertion rod 21 into the through groove 20, and insert the positioning pin 22 through the insertion hole 23 into the pin hole to complete the positioning of the first semicircular ring plate 1 and the second semicircular ring plate 6.

[0036] Thus, when assembling the first semicircular ring plate 1 and the second semicircular ring plate 6, the insertion rod 21 is inserted into the through groove 20, and the end of the insertion rod 21 extends out of the through groove 20, so that the insertion hole 23 on the insertion rod 21 is coaxially connected with the pin hole. The positioning between the first semicircular ring plate 1 and the second semicircular ring plate 6 is achieved by passing the pin through the insertion hole 23 and the pin hole.

[0037] Furthermore, an indicator mark is constructed in the center of the top surface of the connecting arc plate 9, with the indicator mark facing the connecting abutment surface of the first semicircular ring plate 1 and the second semicircular ring plate 6. In this way, when the indicator mark on the connecting arc plate 9 is aligned with the aforementioned connecting abutment surface, it can be ensured that the first slider 14 is completely accommodated in the first slide groove 13 and the second slider 16 is completely accommodated in the second annular groove, thereby preventing the first slider 14 from being inserted into the second slide groove 15, or the second slider 16 from being inserted into the first slide groove 13, which would make it impossible to disassemble the first semicircular ring plate 1 and the second semicircular ring plate 6.

[0038] As for the sampling mechanism 4, the sampling mechanism 4 includes a mounting plate 24 fixedly installed on the top surface of the first driving arc plate 2 or the second driving arc plate 7. The mounting plate 24 extends vertically upward and is provided with a first cutting mechanism and a second cutting mechanism in sequence along the vertical direction.

[0039] In this way, by using the vertically arranged first and second cutting mechanisms, a ring-shaped bark sample of a fixed height can be obtained in a single ring-cutting process.

[0040] Specifically, the first cutting mechanism includes a first positioning plate 25 fixedly mounted on the mounting plate 24 and a first horizontal bar 26 sliding through the first positioning plate 25 and the mounting plate 24. A blade 27 is mounted on one end of the first horizontal bar 26 extending toward the axis of the first drive arc plate 2 or the second drive arc plate 7. Several vertically penetrating first positioning holes 28 are arranged on the first horizontal bar 26 along its extension direction. The top surface of the first positioning plate 25 is constructed with a first insertion hole. A first positioning shaft 29 is disassembled and installed in the first insertion hole. The first positioning shaft 29 is configured to pass through the first insertion hole and a first positioning hole 28.

[0041] In this way, even for trees of different diameters, the position of the blade 27 can be adjusted to adapt to trees of different diameters by adjusting the displacement of the first horizontal rod 26. Furthermore, the depth of the blade 27's cut can be determined by adjusting the position of the first horizontal rod 26, thus controlling the depth of bark cutting. After adjustment, the first horizontal rod 26 is positioned horizontally by passing the first positioning shaft 29 through the first insertion hole and the first positioning hole 28.

[0042] Furthermore, for the second cutting mechanism, the mounting plate 24 has a horizontally penetrating and vertically extending displacement groove 30. The second cutting mechanism includes a second positioning plate 31 slidably disposed within the displacement groove 30. A threaded rod 32 is rotatably mounted on the top surface of the second positioning plate 31. The threaded rod 32 is vertically upward through the mounting plate 24 and is threadedly connected to the mounting plate 24. A horizontally disposed second horizontal rod 33 is slidably mounted within the second positioning plate 31. A blade 27 is mounted on one end of the second horizontal rod 33 extending axially toward the first driving arc plate 2 or the second driving arc plate 7. Several vertically penetrating second positioning holes 34 are arranged along the extension direction of the second horizontal rod 33. The top surface of the second positioning plate 31 has a second insertion hole. A second positioning shaft 35 is disassembled and installed in the second insertion hole. The second positioning shaft 35 is disposed through the second insertion hole and one second positioning hole 34.

[0043] Thus, similar to the first cutting mechanism, the position of the blade 27 on the second horizontal rod 33 can also be adjusted by adjusting the horizontal displacement of the second horizontal rod 33. Furthermore, the vertical position of the second horizontal rod 33 can be adjusted by rotating the threaded rod 32. This allows for the cutting of ring-shaped bark samples of different heights.

[0044] Furthermore, for positioning mechanism 5, it can be combined with... Figure 2 As shown, the positioning mechanism 5 includes a fixing plate 36 installed on the bottom surface of the first semicircular ring plate 1 or the second semicircular ring plate 6. A support rod 37 is threaded onto the fixing plate 36. The support rod 37 is horizontally arranged, and one end of the support rod 37 is constructed as a conical structure. The conical end of the conical structure is oriented toward the axis of the first semicircular ring plate 1 or the second semicircular ring plate 6. The outer wall of the support rod 37 is constructed with an indicator mark.

[0045] Thus, during positioning, before positioning, all support rods 37 are rotated to the same position, and then the conical structure of the support rod 37 is forcefully inserted into the tree trunk. This utilizes the horizontal support of the support rods 37 to support and position the first semi-circular ring plate 1 or the second semi-circular ring plate 6. Furthermore, after assembling the first semi-circular ring plate 1 and the second semi-circular ring plate 6, the mutual compression between them allows the support rods 37 to tend to shift relative to each other, thereby achieving more stable support for the first semi-circular ring plate 1 and the second semi-circular ring plate 6.

[0046] When using the device described in this embodiment to perform ring-shaped bark sampling, the first step is to adjust the position of the support rod 37 to position the first semi-circular ring plate 1 and the second semi-circular ring plate 6 relative to the tree trunk. Then, the first semi-circular ring plate 1 and the second semi-circular ring plate 6 are assembled using the positioning pin 22. The second step is to insert a connecting arc plate 9 between the first driving arc plate 2 and the second driving arc plate 7 to form a complete ring. The third step is to adjust the position of the blade 27 and the relative distance between the first cutting mechanism and the second cutting mechanism. After adjustment, the aforementioned complete ring is rotated by the driving mechanism 11 to perform ring-shaped sampling of the bark.

[0047] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A tree bark sampling device, characterized in that, include: The first semicircular ring plate (1) and the second semicircular ring plate (6) are equipped with a sampling mechanism (4) on the inner ring side and a positioning mechanism (5) on the bottom surface. The first semi-circular ring plate (1) and the second semi-circular ring plate (6) are connected by a connecting mechanism to form a complete ring; The top surface of the first semi-circular ring plate (1) is equipped with a drive mechanism (11) for driving the sampling mechanism (4).

2. The tree bark sampling device according to claim 1, characterized in that, The first semi-circular ring plate (1) has a first driving arc plate (2) slidably mounted on its inner ring. The outer wall of the first driving arc plate (2) is provided with a first tooth structure (3). The sampling mechanism (4) is mounted on the top surface of the first driving arc plate (2). The second semicircular ring plate (6) is coaxially and slidably mounted with a second driving arc plate (7), and the outer wall of the second driving arc plate (7) is provided with a second tooth structure (8). The sampling mechanism (4) is mounted on the top surface of the second driving arc plate (7). The connecting arc plate (9) is detachably connected to the first driving arc plate (2) and the second driving arc plate (7) at both ends, and is used to connect the first driving arc plate (2) and the second driving arc plate (7). The outer wall of the connecting arc plate (9) is provided with a third tooth structure (10). The sampling end of the sampling mechanism (4) is set toward the axis of the first semi-circular ring plate (1), and the positioning end of the positioning mechanism (5) is set toward the axis of the first semi-circular ring plate (1). The first driving arc plate (2) and the second driving arc plate (7) form a complete ring through the two connecting arc plates (9), and the first tooth structure (3), the second tooth structure (8) and the third tooth structure (10) are spliced ​​together to form a complete and continuous ring tooth structure; The drive mechanism (11) is constructed with a drive tooth structure (12) that meshes with the circular tooth structure.

3. The tree bark sampling device according to claim 2, characterized in that, The arc of the first driving arc plate (2) is smaller than the arc of the first semi-circular ring plate (1). The inner wall of the first semi-circular ring plate (1) is coaxially constructed with a first sliding groove (13). The outer wall of the first driving arc plate (2) is provided with a first slider (14) that is slidably disposed in the first sliding groove (13). The arc of the second driving arc plate (7) is smaller than the arc of the second semi-circular ring plate (6). The inner wall of the second semi-circular ring plate (6) is coaxially constructed with a second sliding groove (15). The outer wall of the second driving arc plate (7) is provided with a second slider (16) that is slidably disposed in the second sliding groove (15). After the first semicircular ring plate (1) and the second semicircular ring plate (6) are spliced ​​together, the first sliding groove (13) and the second sliding groove (15) are connected.

4. A tree bark sampling device according to claim 2, characterized in that, The connecting arc plate (9) includes an arc plate (17), the outer wall of the arc plate (17) is constructed with the third tooth structure (10), and the two ends of the arc plate (17) are equipped with a locking block (18). The two ends of the first driving arc plate (2) and the second driving arc plate (7) are provided with an embedded slot (19) with an open top surface, and the bottom end of the embedded slot (19) is closed.

5. A tree bark sampling device according to claim 2, characterized in that, The connecting mechanism includes an insertion slot (20), an insertion rod (21), and a positioning pin (22); The insertion slot (20) is constructed at the end of the first semi-circular ring plate (1). The insertion slot (20) is horizontally arranged and extends in a straight line. The insertion slot (20) is provided through the arc-shaped side wall of the first semi-circular ring plate (1). The insertion slot (20) has a pin hole at the through-hole side wall of the arc-shaped side wall. The insertion rod (21) is located at the end of the second semi-circular ring plate (6). The insertion rod (21) is arranged parallel to the insertion through groove (20). The side of the insertion rod (21) away from the second semi-circular ring plate (6) is provided with an insertion hole (23) parallel to the pin hole. The insertion rod (21) is inserted into the insertion slot (20), and the positioning pin (22) is inserted through the insertion hole (23) into the pin hole to complete the positioning of the first semicircular ring plate (1) and the second semicircular ring plate (2).

6. A tree bark sampling device according to claim 2, characterized in that, The sampling mechanism (4) includes a mounting plate (24) fixedly installed on the top surface of the first driving arc plate (2) or the second driving arc plate (7). The mounting plate (24) extends vertically upward and is provided with a first cutting mechanism and a second cutting mechanism in sequence along the vertical direction.

7. A tree bark sampling device according to claim 6, characterized in that, The first cutting mechanism includes a first positioning plate (25) fixedly mounted on the mounting plate (24) and a first horizontal bar (26) sliding through the first positioning plate (25) and the mounting plate (24). A blade (27) is mounted on one end of the first horizontal bar (26) extending toward the axis of the first driving arc plate (2) or the second driving arc plate (7). A plurality of vertically penetrating first positioning holes (28) are arranged on the first horizontal bar (26) along its extension direction. A first insertion hole is constructed on the top surface of the first positioning plate (25). A first positioning shaft (29) is disassembled and installed in the first insertion hole. The first positioning shaft (29) is disposed through the first insertion hole and one of the first positioning holes (28).

8. A tree bark sampling device according to claim 6, characterized in that, The mounting plate (24) has a horizontally penetrating and vertically extending displacement groove (30). The second cutting mechanism includes a second positioning plate (31) slidably disposed in the displacement groove (30). A threaded rod (32) is rotatably mounted on the top surface of the second positioning plate (31). The threaded rod (32) is vertically upward through the mounting plate (24). The threaded rod (32) is threadedly connected to the mounting plate (24). A horizontally disposed second horizontal rod (33) is slidably mounted in the second positioning plate (31). A blade (27) is mounted on one end of the second horizontal rod (33) extending towards the first driving arc plate (2) or the second driving arc plate (7) in the axial direction. A plurality of vertically penetrating second positioning holes (34) are arranged on the second horizontal rod (33) along its extension direction. A second insertion hole is constructed on the top surface of the second positioning plate (31). A second positioning shaft (35) is disassembled and installed in the second insertion hole. The second positioning shaft (35) is disposed through the second insertion hole and one of the second positioning holes (34).

9. A tree bark sampling device according to claim 2, characterized in that, The positioning mechanism (5) includes a fixing plate (36) installed on the bottom surface of the first semi-circular ring plate (1) or the second semi-circular ring plate (6). A support rod (37) is threaded on the fixing plate (36). The support rod (37) is horizontally arranged, and one end of the support rod (37) is constructed as a conical structure. The conical end of the conical structure is arranged towards the axis of the first semi-circular ring plate (1) or the second semi-circular ring plate (6). The outer wall of the support rod (37) is constructed with an indicator mark.

10. A method for sampling tree bark, characterized in that, The tree bark sampling device according to any one of claims 1 to 9 is used for sampling.

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