A UAV device for drilling tree cores and a method of using the same

Abstract

The present invention belongs to the technical field of sampling equipment. A drone device for drilling tree cores and a method of using the device are disclosed. The device comprises: an aircraft; a collection component, comprising a collection box fixed to the bottom of the aircraft, a driving unit rotating inside the collection box, a sampling head passing through one end of the collection box, and a transmission unit, one end of which is fixed to the sampling head and the other end of which is controllably engaged with the output end of the driving unit. A telescopic unit is fixed inside the collection box, and the telescopic end of the telescopic unit is configured to drive the transmission unit to move along the movement direction of the sampling head so that the sampling head switches between a contracted state and a collection state. The present invention can realize the use of an aircraft to drive the sampling head to move to a predetermined position, and under the action of the transmission unit, the driving unit drives the sampling head to rotate to realize the collection of tree cores. The collection process is simple and less dangerous.

Description

Technical Field

[0001] The invention belongs to the technical field of sampling equipment, and in particular relates to an unmanned aerial vehicle device for drilling tree cores and a use method thereof. Background Art

[0002] In order to study the local plant properties, it is necessary to drill and collect cores from trees and analyze the collected cores.

[0003] However, in some environments, such as during the western development process, due to the dense forests in the western region and the large number of poisonous insects and wild beasts, it is not easy for collectors to move to the designated location and drill the cores of the designated trees and collect them, making the collection process cumbersome and difficult, as well as highly dangerous, which greatly limits the study of the properties of local plants.

[0004] Therefore, a UAV device for drilling tree cores and a method for using the device are provided to solve the above-mentioned problems. Summary of the invention

[0005] In order to solve the above technical problems, the present invention proposes a drone device for drilling tree cores and a method of use, which can use the aircraft to drive the sampling head to a predetermined position, and under the action of the transmission unit, the driving unit drives the sampling head to rotate to realize the collection of tree cores. The collection process is simple and less dangerous.

[0006] To achieve the above object, the present invention provides a UAV device for drilling tree cores, comprising:

[0007] Aircraft;

[0008] A collection assembly includes a collection box fixed to the bottom of the aircraft, a driving unit is rotated inside the collection box, a sampling head is penetrated at one end of the collection box, and,

[0009] A transmission unit, one end of which is fixed to the sampling head, and the other end of which is controllably meshed with the output end of the driving unit. A telescopic unit is fixed in the collection box, and the telescopic end of the telescopic unit is configured to drive the transmission unit to move along the movement direction of the sampling head, so that the sampling head switches between a contracted state and a collection state.

[0010] Wherein, in the retracted state, the sampling head is located in the collection box, and the transmission unit is separated from the output end of the driving unit so that the sampling head is stationary relative to the collection box. In the collection state, the transmission unit is configured to drive the sampling head to extend out of the collection box, and the transmission unit is engaged with the output end of the driving unit so that the sampling head rotates relative to the collection box.

[0011] Furthermore, it also includes a transmission unit, the input end of which is connected to the driver of one of the propellers of the aircraft, and the output end of which passes through the bottom of the aircraft and extends into the collection box, and is connected to the drive unit in a transmission manner.

[0012] Further, the transmission unit includes: a transmission rod, which is installed on the aircraft and the collection box, and the transmission rod is located on one end of the aircraft and is connected to a transmission belt, and the other end of the transmission belt is connected to the output end of the driver of one of the propellers of the aircraft;

[0013] A first bevel gear is sleeved and fixed on the transmission rod and is located in the collection box;

[0014] The second bevel gear is sleeved and fixed on the driving unit and is coaxially arranged with the driving unit. The first bevel gear is meshed with the second bevel gear so that the driving unit rotates relative to the collection box.

[0015] Further, the driving unit includes: a driving rod, which is rotatably connected in the collection box and has one end fixed to the second bevel gear;

[0016] The ratchet gear is fixed to the other end of the driving rod and is configured to be controllably meshed with the transmission unit.

[0017] Further, the transmission unit includes: a fixing plate fixed to the inner wall of the collection box;

[0018] A control member, rotatably connected to the end surface of the fixed plate close to the sampling head, and a movable clamping end is connected to the end surface of the control member;

[0019] A limit frame is connected to the telescopic end of the telescopic unit. In the contracted state, the clamping end is separated from the output end of the driving unit through the limit frame. In the collecting state, the clamping end is engaged with the output end of the driving unit through the limit frame.

[0020] Further, the control member includes: a rotating sleeve, which is rotatably connected to the fixed plate, a mounting plate is fixed on the end surface of the rotating sleeve close to the output end of the driving unit, and a plurality of grooves are formed on the side wall of the mounting plate;

[0021] The clamping plate is the clamping end of the control member, one end of which is located in the groove and slidingly matched with the mounting plate, and the clamping plate is located outside the groove and is fixed with meshing teeth on the end surface close to the output end of the drive unit, and the meshing teeth are matched with the output end of the drive unit;

[0022] The telescopic spring is arranged in the groove, and two ends thereof are respectively fixed to the mounting plate and the clamping plate.

[0023] Further, the limiting frame includes: a plurality of limiting rails, which are circumferentially arranged outside the control member, and a limiting groove is provided on the end surface of the limiting rail close to the control member, and one end of the clamping end is located in the limiting groove, and the limiting rail is configured to squeeze the clamping end, and the clamping end is configured to drive the limiting rail to rotate;

[0024] Wherein, the limiting groove includes a first groove section and a second groove section, the second groove section is located on a side of the first groove section away from the sampling head, and the distance between the second groove section and the axis of the control member is smaller than the distance between the second groove section and the axis of the control member.

[0025] Furthermore, the telescopic unit includes a telescopic cylinder fixed in the collection box, a connecting ring is sleeved on the limiting frame, a movable end of the telescopic cylinder is connected to the connecting ring, and the connecting ring is connected to the limiting frame for limited rotation.

[0026] Furthermore, the sampling head includes a sampling tube, the inner wall of the sampling tube is provided with at least one pair of embedding grooves, the pair of embedding grooves are arranged opposite to each other, a claw is provided in the embedding groove, a rotating rod is passed through one end of the claw, the rotating rod is fixed to the sampling tube, the claw is rotatably connected to the rotating rod, a torsion spring is sleeved on the rotating rod, and the two ends of the torsion spring are respectively fixed to the inner wall of the embedding groove and the side wall of the claw.

[0027] A method for using a drone device for drilling tree cores is used to use the drone device for drilling tree cores, and the collection steps include:

[0028] Control the aircraft to move to a predetermined position;

[0029] The telescopic unit drives the transmission unit to move, so that the transmission unit pushes the sampling head out of the collection box;

[0030] After the transmission unit moves a predetermined distance, the transmission unit meshes with the output end of the driving unit, so that the sampling head rotates relative to the collection box to collect samples;

[0031] After the sampling is completed, the telescopic unit drives the transmission unit to reset, so that the transmission unit drives the sampling head to retract the collection box.

[0032] Compared with the prior art, the present invention has the following advantages and technical effects:

[0033] The sampling head is driven by an aircraft to move to a predetermined position, and under the action of a transmission unit, a driving unit drives the sampling head to rotate, thereby collecting the tree core. The collection process is simple and less dangerous. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0035] Figure 1 A three-dimensional diagram of the drone device;

[0036] Figure 2 It is a schematic diagram of the connection relationship between the transmission belt and the transmission rod;

[0037] Figure 3 It is a schematic diagram of the sampling head in the collection state;

[0038] Figure 4 for Figure 3 A front view of

[0039] Figure 5 is a schematic diagram of the sampling head in a retracted state;

[0040] Figure 6 A schematic diagram of the connection relationship between the drive unit and the transmission unit;

[0041] Figure 7 It is a schematic diagram of the structure of the sampling head;

[0042] Figure 8 for Figure 7 A partial enlarged view of the middle A;

[0043] Among them, 1. aircraft; 2. collection box; 3. driving unit; 301. driving rod; 302. ratchet gear; 4. sampling head; 401. sampling tube; 402. claw; 403. rotating rod; 404. torsion spring; 5. transmission unit; 501. fixing plate; 502. rotating sleeve; 503. mounting plate; 504. groove; 505. clamping plate; 506. telescopic spring; 507. limiting rail; 508. limiting groove; 6. transmission rod; 7. transmission belt; 8. first bevel gear; 9. second bevel gear; 10. telescopic cylinder; 11. connecting ring; 12. limiting slideway; 13. limiting slider. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0046] Reference Figure 1-Figure 8 The present invention provides an unmanned aerial vehicle device for drilling tree cores, comprising: an aircraft 1.

[0047] The aircraft 1 is a drone, a collection box 2 is fixed at the bottom of the drone, and a camera is provided on the drone to provide real-time feedback of the surrounding environment of the aircraft 1 .

[0048] Furthermore, the aircraft 1 is provided with an image recognition device. When sampling, the drone first scans the trees, selects the trees to be drilled through image recognition, then flies to the trees and extends the sampling head 4 to drill the core of the tree.

[0049] The collection assembly includes a collection box 2 fixed to the bottom of the aircraft 1, a driving unit 3 rotating inside the collection box 2, a sampling head 4 passing through one end of the collection box 2, and a transmission unit 5, one end of which is fixed to the sampling head 4 and the other end of which is controllably engaged with the output end of the driving unit 3. A telescopic unit is fixed inside the collection box 2, and the telescopic end of the telescopic unit is configured to drive the transmission unit 5 to move along the moving direction of the sampling head 4, so that the sampling head 4 switches between a contracted state and a collection state.

[0050] In which, in the retracted state, the sampling head 4 is located in the collection box 2, and the transmission unit 5 is separated from the output end of the driving unit 3, so that the sampling head 4 is stationary relative to the collection box 2. In the collection state, the transmission unit 5 is configured to drive the sampling head 4 to extend out of the collection box 2, and the transmission unit 5 is engaged with the output end of the driving unit 3, so that the sampling head 4 rotates relative to the collection box 2.

[0051] Specifically, the collection box 2 is used to place the driving unit 3 and the sampling head 4. Under the drive of the telescopic unit, the transmission unit 5 can move relative to the collection box 2, so that the transmission unit 5 drives the sampling head 4 to extend or retract the collection box 2. At the same time, after the sampling head 4 extends a predetermined distance from the collection box 2, the transmission unit 5 is connected to the driving unit 3, and the output end of the driving unit 3 rotates to drive the transmission unit 5 to rotate, and then the transmission unit 5 drives the sampling head 4 to rotate, and the sampling head 4 is rotated to drill the tree, and by controlling the aircraft 1 to move forward, the sampling head 4 moves toward the tree core to achieve drilling sampling.

[0052] The length dimension of the collection box 2 in the moving direction of the sampling head 4 is relatively large, so as to prevent the propeller of the aircraft 1 from colliding with the surface of the tree when the sampling head 4 extends out of the collection box 2 for sampling.

[0053] In this embodiment, refer to Figure 2 , Figure 3, and also includes a transmission unit, the input end of the transmission unit is connected to the driver of one of the propellers of the aircraft 1, and the output end of the transmission unit passes through the bottom of the aircraft 1 and extends into the collection box 2, and is connected to the driving unit 3 in transmission.

[0054] Specifically, the transmission unit is used to provide power for the drive unit 3, that is, the drive unit 3 does not need to be equipped with an additional power device, and uses the propeller of the drone itself, that is, the power structure of the propeller, to achieve the drive unit 3 to follow the rotation through the action of the transmission unit. During normal flight, the drive unit 3 rotates and is separated from the transmission unit 5, so that the sampling head 4 does not rotate. When the sampling head 4 extends out of the collection box 2, the drive unit 3 engages with the transmission unit 5 for transmission. Through the automatic adjustment of the drone, the power output of the propeller is increased to ensure that the drone continues to fly stably and the sampling of the sampling head 4 is achieved.

[0055] Alternatively, a separate power structure is arranged in the collection box 2 to drive the driving unit 3 to rotate.

[0056] In this embodiment, refer to Figure 4 The transmission unit includes: a transmission rod 6, which is inserted into the aircraft 1 and the collection box 2. The transmission rod 6 is located on one end of the aircraft 1 and is connected to a transmission belt 7. The other end of the transmission belt 7 is connected to the output end of the driver of one of the propellers of the aircraft 1; a first bevel gear 8, which is sleeved and fixed on the transmission rod 6 and is located in the collection box 2; a second bevel gear 9, which is sleeved and fixed on the drive unit 3 and is coaxially arranged with the drive unit 3. The first bevel gear 8 is meshed with the second bevel gear 9, so that the drive unit 3 rotates relative to the collection box 2.

[0057] Specifically, a transmission rod 6 is passed through the body of the drone, and a transmission belt 7 is used to connect the transmission rod 6 to the propeller power structure, so that the first bevel gear 8 rotates in the collection box 2, and then the first bevel gear 8 engages with the second bevel gear 9 to drive the drive unit 3 to rotate.

[0058] In this embodiment, refer to Figure 4 , Figure 6 The driving unit 3 includes: a driving rod 301, which is rotatably connected in the collection box 2 and one end of which is fixed to the second bevel gear 9; a ratchet gear 302, which is fixed to the other end of the driving rod 301 and is configured to be controllably meshed with the transmission unit 5.

[0059] Specifically, the driving rod 301 is inserted into the fixing plate 501 and into the rotating sleeve 502 to support the driving rod 301 , so that the driving rod 301 can drive the ratchet gear 302 to rotate in the collection box 2 .

[0060] In this embodiment, refer to Figure 4 , Figure 6The transmission unit 5 includes: a fixed plate 501, fixed on the inner wall of the collection box 2; a control member, rotatably connected to the end surface of the fixed plate 501 close to the sampling head 4, and a movable clamping end is connected to the end surface of the control member; a limit frame, connected to the telescopic end of the telescopic unit, in the retracted state, the clamping end is separated from the output end of the driving unit 3 through the limit frame, and in the collection state, the clamping end is engaged with the output end of the driving unit 3 through the limit frame.

[0061] Specifically, the fixing plate 501 is fixed in the collection box 2, and is used to support the control member. The clamping end changes position relative to the control member under the action of the limit frame, and the clamping end engages or disengages with the ratchet gear 302, so that the sampling head 4 is in a rotating or stationary state.

[0062] In this embodiment, refer to Figure 6 The control component includes: a rotating sleeve 502, which is rotatably connected to the fixed plate 501, and a mounting plate 503 is fixed on the end surface of the rotating sleeve 502 close to the output end of the drive unit 3, and a plurality of grooves 504 are provided on the side wall of the mounting plate 503; a clamping plate 505, which is the clamping end of the control component, one end of which is located in the groove 504 and slidingly cooperates with the mounting plate 503, and the clamping plate 505 is located outside the groove 504 and has meshing teeth fixed on the end surface close to the output end of the drive unit 3, and the meshing teeth cooperate with the output end of the drive unit 3; a telescopic spring 506, which is arranged in the groove 504, and its two ends are respectively fixed to the mounting plate 503 and the clamping plate 505.

[0063] Specifically, the rotating sleeve 502 can rotate relative to the collection box 2 through the fixed plate 501, and the clamping plate 505 is connected to the mounting plate 503 through the telescopic spring 506. In the collection state, the limit frame squeezes the clamping plate 505 through its own structure, so that the meshing teeth on the clamping plate 505 mesh with the outer wall teeth of the ratchet gear 302, so that the ratchet gear 302 rotates to drive the clamping plate 505 to rotate, and then drives the limit frame to rotate. In the retracted state, the limit frame limits the clamping plate 505 through its own structure, so that the meshing teeth on the clamping plate 505 are separated from the outer wall teeth of the ratchet gear 302, so that the ratchet gear 302 rotates, while the clamping plate 505 and the limit frame are stationary.

[0064] Among them, under the above-mentioned structural setting, it can be ensured that the clamping plate 505 is engaged with the rotating ratchet gear 302, avoiding tooth hitting or reducing the probability of tooth hitting.

[0065] The ratchet gear 302 is located on a side of the mounting plate 503 close to the sampling head 4 .

[0066] In this embodiment, refer to Figure 3 , Figure 4 , Figure 5 , Figure 6The limiting frame includes: a plurality of limiting rails 507, which are arranged circumferentially on the outside of the control member, and a limiting groove 508 is provided on the end surface of the limiting rail 507 close to the control member, and one end of the clamping end is located in the limiting groove 508, and the limiting rail 507 is configured to squeeze the clamping end, and the clamping end is configured to drive the limiting rail 507 to rotate; wherein, the limiting groove 508 includes a first groove section and a second groove section, and the second groove section is located on the side of the first groove section away from the sampling head 4, and the distance between the second groove section and the axis center of the control member is smaller than the distance between the second groove section and the axis center of the control member.

[0067] Specifically, multiple limit rails 507 are connected and fixed by a ring plate, and one end of the limit rail 507 is fixed to the sampling head 4 to drive the sampling head 4 to move in the horizontal direction and rotate relative to the collection box 2. By setting the structural size of the limit groove 508, when the relative position of the limit rail 507 and the clamping plate 505 changes, the squeezing force of the limit rail 507 on the clamping plate 505 changes, so that the clamping plate 505 changes its relative position with the ratchet gear 302 under the action of the telescopic spring 506, thereby achieving the clamping plate 505 to engage or disengage with the ratchet gear 302 under the action of the limit rail 507.

[0068] Specifically, the first slot section and the second slot section are connected by an arc section, so that the clamping plate 505 is slidably matched with the limiting slot 508 and moves and changes position under the structural action of the limiting slot 508.

[0069] Furthermore, a roller is fixed on the end surface of the clamping plate 505 close to the limiting groove 508 , and the roller is slidably matched with the limiting groove 508 .

[0070] In this embodiment, refer to Figure 3 , Figure 4 , Figure 5 , Figure 6 The telescopic unit includes a telescopic cylinder 10 fixed in the collection box 2, a connecting ring 11 is sleeved on the limiting frame, the movable end of the telescopic cylinder 10 is connected to the connecting ring 11, and the connecting ring 11 is connected to the limiting frame for limited rotation.

[0071] Specifically, a fixed limiting ring is sleeved on the limiting frame, and the connecting ring 11 is sleeved on the limiting ring, so that the limiting frame can rotate relative to the connecting ring 11. At the same time, when the telescopic cylinder 10 pushes the connecting ring 11 to move in the horizontal direction, the limiting frame can be driven to move through the limiting ring.

[0072] Furthermore, a limiting slide 12 is fixed on the inner wall of the collection box 2, a limiting slider 13 is fixed on the outer wall of the connecting ring 11, the limiting slider 13 extends into the limiting slide 12 and slides with the limiting slide 12, and the limiting slider 13 is connected to the telescopic end of the telescopic cylinder 10. Under this structural setting, the limiting slide 12 and the limiting slider 13 cooperate to limit the support of the limiting frame, so that the limiting frame can only move along the moving direction of the sampling head 4.

[0073] In this embodiment, refer to Figure 6 , Figure 7 The sampling head 4 includes a sampling tube 401, and the inner wall of the sampling tube 401 is provided with at least one pair of embedding grooves, which are arranged opposite to each other, and a claw 402 is arranged in the embedding groove. A rotating rod 403 is passed through one end of the claw 402, and the rotating rod 403 is fixed to the sampling tube 401. The claw 402 is rotatably connected to the rotating rod 403, and a torsion spring 404 is sleeved on the rotating rod 403. The two ends of the torsion spring 404 are respectively fixed to the inner wall of the embedding groove and the side wall of the claw 402.

[0074] Specifically, when the tree core sampling is completed and the sampling head 4 is taken out, in some cases, the bottom of the tree core is connected to the tree, making it difficult for the sampling head 4 to separate the tree core from the tree. Therefore, a claw 402 is connected to the inner wall of the sampling tube 401. When the sampling tube 401 extends out of the collection box 2 and is driven to rotate by the driving unit 3, the claw 402 is stored in the embedded groove under the action of centrifugal force. When the sampling is completed, the sampling tube 401 is retracted. After the sampling tube 401 loses the power of the driving unit 3 and stops rotating, the claw 402 extends out of the embedded groove and engages with the outer wall of the tree core under the action of the torsion spring 404, and is pulled by the telescopic cylinder 10 to achieve the separation of the tree core from the tree.

[0075] Furthermore, the sampling head 4 may be a pair of semi-arc structures spliced ​​together by a hoop or other connecting structures, so as to facilitate the subsequent removal of the tree core from the sampling head 4 .

[0076] A method for using a drone device for drilling tree cores is used to use the drone device for drilling tree cores, and the collection steps include:

[0077] S1. Control the aircraft 1 to move to a predetermined position.

[0078] Specifically, the trees to be harvested are selected, and the aircraft 1 is manually controlled to fly to the predetermined trees and the predetermined height.

[0079] S2. The telescopic unit drives the transmission unit 5 to move, so that the transmission unit 5 pushes the sampling head 4 to extend out of the collection box 2.

[0080] Specifically, the telescopic cylinder 10 is started by wireless control, and the telescopic cylinder 10 extends, pushing the limit rail 507 and driving the sampling tube 401 to extend out of the collection box 2. At this time, the clamping plate 505 is located in the first groove section of the limit groove 508, and the meshing teeth on the clamping plate 505 are separated from the ratchet gear 302.

[0081] S3. After the transmission unit 5 moves a predetermined distance, the transmission unit 5 engages with the output end of the driving unit 3, so that the sampling head 4 rotates relative to the collection box 2 to collect samples.

[0082] Specifically, after the telescopic cylinder 10 pushes the limit rail 507 to move a certain distance, the clamping plate 505 changes from the first groove section of the limit groove 508 to the second groove section. The clamping plate 505 is affected by the second groove section, and the clamping plate 505 is close to the ratchet gear 302 and the meshing teeth on the clamping plate 505 mesh with the ratchet gear 302, so that the rotation of the ratchet gear 302 drives the clamping plate 505 to rotate, and drives the limit rail 507 and the sampling head 4 to rotate through the clamping plate 505. By controlling the movement of the aircraft 1, the sampling head 4 is extended into the tree and the core of the tree is drilled.

[0083] S4. After the sampling is completed, the telescopic unit drives the transmission unit 5 to reset, so that the transmission unit 5 drives the sampling head 4 to retract the collection box 2.

[0084] Specifically, after drilling is completed, the telescopic cylinder 10 is controlled to reset. After the telescopic cylinder 10 drives the limit rail 507 to move a certain distance, the clamping plate 505 changes from the second slot section of the limit slot 508 to the first slot section. The clamping plate 505 is affected by the first slot section, the clamping plate 505 is away from the ratchet gear 302, and the meshing teeth on the clamping plate 505 are separated from the ratchet gear 302, so that the sampling head 4 stops rotating, and the claw 402 pops out and engages with the tree core, and then the tree core and the tree are separated by the telescopic cylinder 10, and the drone is controlled to reset. After the drone lands and stops, the telescopic cylinder 10 is driven to push the sampling head 4 out of the collection box 2 to take out the tree core.

[0085] The above are only preferred specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A drone device for drilling tree cores, characterized in that: include: Aircraft (1); A collection assembly comprises a collection box (2) fixed to the bottom of the aircraft (1), a driving unit (3) rotating inside the collection box (2), a sampling head (4) passing through one end of the collection box (2), and, A transmission unit (5) having one end fixed to the sampling head (4) and the other end controllably meshed with the output end of the driving unit (3); a telescopic unit is fixed in the collection box (2); the telescopic end of the telescopic unit is configured to drive the transmission unit (5) to move along the movement direction of the sampling head (4), so that the sampling head (4) switches between a contracted state and a collection state; Wherein, in the retracted state, the sampling head (4) is located in the collection box (2), and the transmission unit (5) is separated from the output end of the drive unit (3), so that the sampling head (4) is stationary relative to the collection box (2); in the collection state, the transmission unit (5) is configured to drive the sampling head (4) to extend out of the collection box (2), and the transmission unit (5) is engaged with the output end of the drive unit (3), so that the sampling head (4) rotates relative to the collection box (2); It also comprises a transmission unit, the input end of the transmission unit is connected to the driver of one of the propellers of the aircraft (1), the output end of the transmission unit passes through the bottom of the aircraft (1) and extends into the collection box (2), and is transmission-connected to the drive unit (3); A transmission rod (6) is provided on the aircraft (1) and the collection box (2); one end of the transmission rod (6) is located on the aircraft (1) and is connected to a transmission belt (7); the other end of the transmission belt (7) is connected to an output end of a driver of one of the propellers of the aircraft (1); A first bevel gear (8) is sleeved and fixed on the transmission rod (6) and is located in the collection box (2); The second bevel gear (9) is sleeved and fixed on the driving unit (3) and is coaxially arranged with the driving unit (3). The first bevel gear (8) is meshed with the second bevel gear (9) so that the driving unit (3) rotates relative to the collection box (2).

2. The unmanned aerial vehicle device for drilling tree cores according to claim 1, characterized in that: The driving unit (3) comprises: a driving rod (301) rotatably connected in the collection box (2), and one end of which is fixed to the second bevel gear (9); The ratchet gear (302) is fixed to the other end of the driving rod (301) and is configured to be controllably meshed with the transmission unit (5).

3. The drone device for drilling tree cores according to claim 1, characterized in that: The transmission unit (5) comprises: a fixing plate (501) fixed to the inner wall of the collection box (2); A control member, rotatably connected to the end surface of the fixed plate (501) close to the sampling head (4), and a movable clamping end is connected to the end surface of the control member; A limit frame is connected to the telescopic end of the telescopic unit. In the contracted state, the clamping end is separated from the output end of the drive unit (3) through the limit frame. In the collecting state, the clamping end is engaged with the output end of the drive unit (3) through the limit frame.

4. The unmanned aerial vehicle device for drilling a tree core according to claim 3, characterized in that: The control component comprises: a rotating sleeve (502) rotatably connected to the fixed plate (501); a mounting plate (503) is fixed on the end surface of the rotating sleeve (502) close to the output end of the driving unit (3); and a plurality of grooves (504) are formed on the side wall of the mounting plate (503); A clamping plate (505) is a clamping end of the control member, one end of which is located in the groove (504) and slidably cooperates with the mounting plate (503); a meshing tooth is fixed on the end surface of the clamping plate (505) located outside the groove (504) and close to the output end of the drive unit (3); the meshing tooth cooperates with the output end of the drive unit (3); The telescopic spring (506) is arranged in the groove (504), and two ends thereof are respectively fixed to the mounting plate (503) and the clamping plate (505).

5. The unmanned aerial vehicle device for drilling a tree core according to claim 3, characterized in that: The limiting frame comprises: a plurality of limiting rails (507) arranged circumferentially on the outer side of the control member, a limiting groove (508) is provided on the end surface of the limiting rail (507) close to the control member, one end of the clamping end is located in the limiting groove (508), the limiting rail (507) is configured to squeeze the clamping end, and the clamping end is configured to drive the limiting rail (507) to rotate; The limiting groove (508) comprises a first groove section and a second groove section, the second groove section is located on a side of the first groove section away from the sampling head (4), and the distance between the second groove section and the axis of the control member is smaller than the distance between the second groove section and the axis of the control member.

6. The unmanned aerial vehicle device for drilling a tree core according to claim 3, characterized in that: The telescopic unit comprises a telescopic cylinder (10) fixed in the collection box (2); a connecting ring (11) is sleeved on the limiting frame; a movable end of the telescopic cylinder (10) is connected to the connecting ring (11); and the connecting ring (11) is connected to the limiting frame for limited rotation.

7. The unmanned aerial vehicle device for drilling a tree core according to claim 1, characterized in that: The sampling head (4) comprises a sampling tube (401), the inner wall of the sampling tube (401) is provided with at least one pair of embedding grooves, the pair of embedding grooves are arranged opposite to each other, a clamping claw (402) is arranged in the embedding groove, a rotating rod (403) is passed through one end of the clamping claw (402), the rotating rod (403) is fixed to the sampling tube (401), the clamping claw (402) is rotatably connected to the rotating rod (403), a torsion spring (404) is sleeved on the rotating rod (403), and the two ends of the torsion spring (404) are respectively fixed to the inner wall of the embedding groove and the side wall of the clamping claw (402).

8. A method for using a drone device for drilling a tree core, for using the drone device for drilling a tree core according to claim 1, characterized in that: The collection steps include: Controlling the aircraft (1) to move to a predetermined position; The telescopic unit drives the transmission unit (5) to move, so that the transmission unit (5) pushes the sampling head (4) to extend out of the collection box (2); After the transmission unit (5) moves a predetermined distance, the transmission unit (5) engages with the output end of the driving unit (3), so that the sampling head (4) rotates relative to the collection box (2) to collect samples; After sampling is completed, the telescopic unit drives the transmission unit (5) to reset, so that the transmission unit (5) drives the sampling head (4) to retract the collection box (2).

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