Tree sample collecting device

Abstract

The invention provides a tree sample collecting device which comprises a bearing frame, the bearing frame is of a rectangular or annular structure with a notch, the notch is used for allowing a tree trunk to enter and exit, and the bearing frame is provided with a fixing assembly and a sampling assembly; the fixing assembly comprises a movable fixing part and a static fixing part which are dynamically and symmetrically arranged, the movable fixing part is driven by the first driving part or the second driving part to move towards one side of the static fixing part, and the static fixing part is fixed to the bearing frame; the movable fixing part and the static fixing part are each provided with a buffering part making direct contact with a forest tree. The device is provided with the buffer part, flexible connection is formed between the sampling device and a tree trunk, the device can adapt to the shape of bark, and tearing or crushing in the clamping process is avoided. The structure effectively reduces physiological interference on forest trees, and is particularly suitable for lossless sampling of rare or protected tree species.

Description

Technical Field

[0001] This invention relates to the field of forestry technology, specifically a tree sample collection device. Background Technology

[0002] Currently, forestry surveys, ecological research, and tree-ring analysis often require tree sampling to obtain information on tree rings, growth layers, resin content, or other physiological structures. Traditional tree sampling methods typically employ handheld tree-ring drills and chisels, with manual operation to directly drill into the trunk for sample collection. While these methods are convenient, they have the following drawbacks:

[0003] Unstable fixing methods: Existing devices often require operators to hold the drill bit to the tree trunk by hand or use ropes, straps, etc., which is cumbersome and has limited clamping effect, easily causing deviation, slippage or sampling failure, especially in complex field environments where it is difficult to operate stably.

[0004] High labor intensity and low efficiency: Traditional tools rely heavily on manual rotary drilling, resulting in low sampling efficiency and failing to meet the needs of large-scale or high-frequency forest surveys.

[0005] Significant damage to the tree: Some existing devices can easily squeeze, tear or even peel off the bark of the tree trunk during clamping or drilling, causing the wound to expand, affecting the normal growth of the tree, and even causing the spread of diseases.

[0006] Poor adaptability: Due to the limitations of the device structure, some tools are difficult to adapt to tree trunks of different diameters or shapes, thus limiting their scope of use.

[0007] Therefore, existing tree sample collection devices still have room for improvement in terms of fixation methods, operational efficiency, biosafety, and applicability. There is an urgent need for a new tree sample collection device that is more stable in structure, easier to operate, causes less damage, and is more adaptable.

[0008] Therefore, a tree sample collection device is provided to address the above-mentioned problems. Summary of the Invention

[0009] This invention addresses the shortcomings of existing tree sample collection devices, such as unstable fixing methods, low sampling efficiency, and significant damage to trees, which make it difficult to meet the needs of efficient and low-damage forest sampling in the field.

[0010] The present invention solves the above-mentioned technical problems through the following technical solutions:

[0011] The present invention provides a tree sample collection device, including a support frame, wherein the support frame is a rectangular or ring structure with a notch for entering and exiting the tree trunk, and the support frame is provided with a fixing component and a sampling component;

[0012] The fixing component includes two dynamically symmetrically arranged moving fixing parts and a stationary fixing part. The moving fixing part moves toward one side of the stationary fixing part by being driven by a first driving part or a second driving part. The stationary fixing part is fixed on the support frame.

[0013] Both the moving and static fixing parts are provided with buffer parts that come into direct contact with the trees;

[0014] The power assembly is slidably connected to the support frame and located above the movable fixed part. The power assembly is connected to the drill bit through a transmission connection. The power assembly drives the drill bit to rotate, thereby drilling into the trunk of the tree to take samples.

[0015] By placing the movable and static fixing parts on both sides of the tree trunk through the notch, the movable fixing part is then moved towards one side of the static fixing part until the tree trunk is clamped between the movable and static fixing parts, thereby fixing the sampling device to the tree trunk. The power component drives the drill head to rotate, pushing the power component towards one side of the tree trunk, thus completing the sampling.

[0016] The buffer section creates a flexible connection between the sampling device and the tree trunk, which can prevent excessive damage to the tree bark and affect the survival of the tree after sampling.

[0017] In this technical solution, the dynamic fixing part and the static fixing part have the same structure and both include a mounting arc plate. Multiple fixing airbags are fixed on the inwardly concave arc surface of the mounting arc plate.

[0018] The mounting arc plate on the static fixed part is fixed to the support frame by the mounting rod. The moving fixed part is connected to the first driving part or the second driving part on the other side of the support frame by the telescopic and resilient connecting part. The moving fixed part and the static fixed part are located on both sides of the notch, respectively.

[0019] The fixed airbag has at least one-third of its internal space filled with air or inert gas, and the fixed airbag on the mounting arc plate constitutes a buffer section.

[0020] Preferably, the thickness of the fixing airbags decreases from both sides of the mounting arc plate to the center of the device, so that most of the fixing airbags can contact the tree trunk and provide stability during fixing.

[0021] The first or second driving part drives the mounting arc plate that constitutes the moving fixing part to move towards one side of the static fixing part, so that the tree trunk is clamped between the moving fixing part and the static fixing part.

[0022] In this technical solution, the first driving part includes a screw arranged in a horizontal direction, and a threaded outer sleeve that engages with the screw is sleeved on the surface of the screw. The top of the threaded outer sleeve is fixedly connected to the surface of the support frame or sampling component and the support component through a connecting plate.

[0023] One end of the screw is connected to the center of the rotating disk, and a connecting sleeve is fitted onto the surface of the rotating disk. The rotating disk rotates inside the connecting sleeve, and the connecting sleeve is fixedly connected to the connecting part.

[0024] A limiting rod is arranged parallel to the screw and on the same plane. The limiting rod passes through the connecting plate and is fixedly connected to the corresponding mounting arc plate. The limiting rod can slide on the connecting plate.

[0025] A handwheel is fixed to the other end of the screw.

[0026] In this technical solution, the second driving unit includes a telescopic self-driving rod arranged in a horizontal direction. The self-driving rod is fixed on the mounting plate, and the self-driving rod and the connecting part are fixedly connected to each other. The mounting plate is fixed on the support frame.

[0027] The self-driving rod constituting the second drive unit extends or shortens, causing the driving fixed part to move.

[0028] In this technical solution, the connecting part includes a telescopic movable rod, the surface of which is fitted with a first spring, one end of which is fixedly connected to a corresponding mounting arc plate, and the other end is fixedly connected to the outer sleeve of the first driving part or the end of the self-driving rod of the second driving part.

[0029] When the fixing airbag on the moving fixing part presses against the surface of the tree trunk, the initial fixing is achieved. The moving fixing part continues to move, the moving rod retracts, and through the rebound force of the first spring, the fixing airbag is pressed further against the surface of the tree trunk to complete the secondary fixing. The telescopic and spring-loaded connecting part can improve the fault tolerance when fixing the tree trunk and avoid excessive pressure from the first fixing to damage the tree.

[0030] In this technical solution, an inflation assembly is also included that simultaneously inflates the fixed airbags on the moving fixed part and the static fixed part, and the inflation assembly is connected to the moving fixed part by mutual transmission.

[0031] The movement of the movable fixing part causes the inflation assembly to inflate the fixed airbags on the movable fixing part and the static fixing part.

[0032] In this technical solution, the inflation assembly includes an inflation tube fixed on a static fixed part or a support frame. One side of the inflation tube is closed and the other side is open. The inflation tube is parallel to the moving direction of the dynamic fixed part. An inflation piston is slidably connected inside the inflation tube. The inflation piston is slidably sealed to the inner wall of the inflation tube. A transmission rod is fixed on the surface of the inflation piston. The transmission rod is located near the open side of the inflation tube. The end of the transmission rod is connected to the dynamic fixed part through a transmission part.

[0033] A three-way tube communicating with its inner cavity is fixed to the closed end on the other side of the inflation tube. The other two ports of the three-way tube are respectively connected to the fixed airbags on the dynamic fixed part and the static fixed part through connecting hoses.

[0034] Specifically, the fixed airbags on the same mounting arc plate are interconnected through pipes.

[0035] When not in use, the fixed airbag is not filled with gas, which takes up little space and makes it easy to place and carry the whole device. It also makes it easy to put larger diameter tree trunks to be sampled between the dynamic and static fixing parts.

[0036] This also prevents the airbag from being inflated for extended periods, which could affect its lifespan.

[0037] In this technical solution, the transmission part is a first transmission component or a second transmission component with a staged inflation function. The first transmission component is a rigid rod, and the two ends of the first transmission component are respectively fixed to the end of the transmission rod and the surface of the mounting arc plate on the moving fixed part.

[0038] The second transmission component drives the inflation assembly to inflate the fixed airbag after the moving rod retracts.

[0039] In this technical solution, the second transmission component includes a pressurizing unit and a connecting unit, wherein the connecting unit is slidably sleeved on the push rod, and the push rod is fixed to the end of the transmission rod;

[0040] The retraction of the moving rod causes the pressurizing unit to move, which in turn causes the plug rod in the connecting unit to move upward. During the upward movement of the plug rod, the connection between the fixed connecting part and the push rod is moved synchronously, which in turn causes the transmission rod to move, thereby causing the inflation assembly to inflate the fixed airbag.

[0041] When the transmission unit is the second transmission component, after the moving fixed part moves, the second connecting part will not immediately connect the inflation piston and the moving fixed part. When the fixed airbag on the moving fixed part presses against the surface of the tree trunk, the moving rod is compressed during the continuous movement of the moving fixed part, thereby driving the pressurizing unit to move. The pressurizing unit drives the plug rod in the connecting unit to move upward. During the upward movement of the plug rod, the connection between the fixed connecting part and the push rod is fixed. The push rod moves synchronously, driving the transmission rod to move, thereby driving the inflation component to inflate the fixed airbag, so that the fixed airbag further actively expands between the mounting arc plate and the tree trunk.

[0042] The second transmission component allows inflation to begin only after the secondary fixation is completed, which facilitates better filling of the fixing airbag between the mounting arc plate and the tree trunk bark. This improves the fixing effect, and the amount of air remaining inside the fixing airbag does not need to be strictly controlled, as it will not affect the stroke of the moving fixing part.

[0043] In this technical solution, the pressurizing unit includes a transformer tube arranged parallel to the moving rod. The transformer tube is fixed on the surface of the mounting arc plate on the moving fixed part. One side of the transformer tube is closed and the other side is open. A transformer piston is slidably connected inside the transformer tube. The transformer piston and the wall of the transformer tube are slidably sealed. One end of the synchronizing rod is connected to the side of the transformer piston away from the mounting arc plate. The synchronizing rod is preferably a "U" shaped structure. The other end of the synchronizing rod passes through the open end of the transformer tube and is fixedly connected to the end of the moving rod that is moving relative to it.

[0044] A flexible air guide tube is connected to one of the closed ends of the transformer tube, and the air guide tube is connected to the connecting unit.

[0045] When the movable fixed part comes into contact with the tree trunk, the movable fixed part continues to move. One end of the moving rod stops moving relative to the tree trunk, while the other end moves relative to the tree trunk, thus moving towards one side of the tree trunk. At this time, the first spring deforms and begins to gradually trigger the inflation function.

[0046] The connecting unit includes a guide tube arranged vertically, with the bottom of the guide tube closed and the top open.

[0047] The guide tube is fixed to the end of the moving rod on the same side as the synchronizing rod by a fixing rod;

[0048] A sliding frame is fitted onto the surface of a push rod and slidably connected to the push rod. The top and bottom sidewalls of the sliding frame are both penetrated by insertion holes, and the surface of the push rod is also provided with multiple equally spaced insertion holes. The insertion holes on the sliding frame and the sliding holes on the push rod can be aligned.

[0049] The lifting piston is slidably and sealed to the inner wall of the guide tube. A plug rod is fixed at the top center of the lifting piston. The plug rod is inserted into the plug-in through hole at the bottom of the sliding frame. That is, when the lifting piston is in the initial position, the top of the plug rod is inserted into the plug-in through hole at the bottom of the sliding frame.

[0050] The closed end at the bottom of the guide tube and the closed end of the transformer tube are connected to each other by a venting bellows of sufficient length.

[0051] The top of the plug rod is provided with a spring-loaded and retractable buffer rod. The buffer rod is slidably inserted into the cavity at the top of the plug rod, and a third spring is fixed on the plug rod. The two ends of the third spring are respectively fixed to the side wall of the cavity and the plug rod.

[0052] In the normal state of the third spring, and with the piston plate in the initial position, there is a gap or overlap between the top of the insertion rod and the bottom side wall of the push rod.

[0053] The moving rod moves continuously relative to the moving end, the plug-in rod moves continuously upward, the pushing rod moves continuously, and the air is continuously inflated. Under the premise of fixing the collection device, the movement of the moving fixing part stops when the fixed air bag can no longer be inflated, thereby completing the fixing of the collection device.

[0054] In this technical solution, the power assembly includes a mounting housing, a motor is fixed inside the mounting housing, and a long strip-shaped sliding plate is fixed to the bottom of the mounting housing. The sliding plate is slidably connected to a guide rail, and the guide rail is fixed to a support frame.

[0055] A connecting shaft is fixed to the output end of the motor. The connecting shaft passes through the side wall of the mounting housing and protrudes from one side of the outer wall of the mounting housing. The connecting shaft is connected to the drill bit.

[0056] A handle is fixed to the outer wall of the other side of the mounting housing.

[0057] The motor drives the drill head to rotate via the connecting shaft. By pushing the mounting housing with the handle, the rotating drill head moves to one side of the tree trunk, thus enabling the sampling of the trees.

[0058] Push the mounting housing with your hand to move it, and the sliding plate connected to the mounting housing will slide on the guide rail.

[0059] In this technical solution, the drill head includes a hollow drill rod, one side of which is a conical structure, and a spiral protrusion is provided on the end face of the conical structure. A sampling core tube is sleeved inside the drill rod.

[0060] The sampling core tube is inserted into the inner cavity of the connector, the drill rod is sleeved on the outer wall of the connector, the connector is inserted into the insertion groove inside the connecting sleeve through the insertion block, and the connecting sleeve is fixed on the end of the connecting shaft.

[0061] Specifically, the drill pipe has multiple first slots that engage with the first protrusions on the outer wall of the connector, and the outer wall of the sampling core tube has multiple second protrusions that engage with the multiple second slots on the inner wall of the connector.

[0062] The drill rod, sampling core tube, connector, and connecting sleeve are positioned on the circumference by the insertion between the protrusion and the slot, allowing them to rotate synchronously.

[0063] The outer contours of the plug and the plug slot are consistent, and the plug and the plug slot are in clearance fit. The plug and the plug slot are preferably in the shape of a "I" or a "+" shape.

[0064] The end of the sampling core tube inserted into the inner cavity of the drill pipe is preferably in contact with the inner wall of the drill pipe.

[0065] The drill rod and connector, the sampling core tube and connector, and the connector and connector sleeve can be further fixed by the use of pins and holes, which facilitates the retraction of the drill.

[0066] This technical solution also includes a disinfection component, which is disposed around the drill bit and is used to disinfect the sampling area during the sampling process.

[0067] The disinfection component includes a support ring, which is sleeved around the drill bit and the drill bit is located between the support ring and the mounting shell. The support ring is connected to the power component through at least two telescopic guide rods, specifically connected to the surface of the mounting shell. A third spring is sleeved on the surface of the guide rod, and the two ends of the third spring are respectively fixed to the two ends of the guide rod.

[0068] A hollow mounting ring is fixed on the annular surface of the bearing ring. Multiple nozzles arranged in a ring array are fixed on the annular surface of the mounting ring away from the power component. The nozzles are tilted towards one side of the drill bit.

[0069] It also includes an injection section, which includes a storage tube for storing disinfectant. The storage tube is fixed to the mounting shell, and the end connected to the mounting shell is a closed end. A pusher piston is slidably and sealed on the inner wall of the storage tube. A guide tube is fixed on the outer wall of the pusher piston. The guide tube is fixedly connected to the mounting ring and communicates with its inner cavity. The guide tube communicates with the inner cavity of the storage tube, that is, the guide tube penetrates the pusher piston.

[0070] A liquid filling pipe is connected to the outer wall of the liquid storage pipe, and a sealing cover with a threaded connection is provided at the end of the liquid filling pipe.

[0071] The top and bottom of the side surface of the bearing ring near the static fixed part are fixed with pads.

[0072] The liquid addition tube is not shown in the diagram.

[0073] During drilling, by pushing the mounting shell and the drill bit on the mounting shell towards one side of the tree trunk, the bearing ring or the gasket on the bearing ring contacts the tree trunk first. As the mounting shell continues to move, the guide rod retracts, and the third spring on the guide rod deforms. At the same time, the side of the liquid guiding tube connected to the bearing ring is stationary relative to the tree trunk, while the fixed shell continues to move. This causes the liquid pusher piston on the other end of the liquid guiding tube to slide relative to the liquid storage tube. The liquid in the liquid storage tube is compressed and enters the liquid guiding tube, then flows into the inner cavity of the mounting ring, and finally flows out or sprays out from the nozzle, completing the disinfection of the sampling part before sampling.

[0074] The disinfection unit does not require an additional power source; its power comes from the movement of the mounting housing. Disinfection only begins when the bearing ring contacts the sampling area, and the nozzles are distributed around the drill bit, improving the accuracy of disinfection.

[0075] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of the present invention.

[0076] The positive and progressive effects of this invention are as follows:

[0077] The moving and stationary fixing parts are positioned on either side of the tree trunk through notches. By driving the moving fixing part to move towards the stationary fixing part, the tree trunk is clamped, thus stably fixing the sampling device to the trunk. This structure requires no additional binding parts or human support, is easy to operate, has high fixing efficiency, can adapt to trees of different diameters, and effectively improves the adaptability and reliability of the sampling device in the field environment.

[0078] During the sampling process, the power unit drives the drill head to rotate and advance gradually, so that the drill bit can drill vertically or radially into the tree trunk to collect annual ring samples. The sampling process is highly mechanized, with low labor intensity, and is suitable for large-scale, high-frequency forest sampling operations.

[0079] In addition, the device is equipped with a buffer section, forming a flexible connection between the sampling device and the tree trunk. This buffer structure can adapt to the natural morphological changes of the bark during the clamping process, avoiding mechanical damage such as bark tearing or indentation caused by excessive compression or vibration. It maximizes the protection of the integrity of the tree trunk's epidermal structure, reduces the physiological interference of sampling on the trees, and is conducive to the normal growth and survival of the trees after sampling. It is especially suitable for non-destructive sampling of precious, rare, or protected tree species.

[0080] In summary, this device has a reasonable structure, stable clamping, and convenient operation. It has good biosafety and wide applicability, and is particularly suitable for efficient and low-damage sample collection of tree rings. Attached Figure Description

[0081] Figure 1 This is a schematic diagram of the external three-dimensional structure of the present invention;

[0082] Figure 2 This is a top view of the structure of the present invention;

[0083] Figure 3 For the present invention Figure 2 Schematic diagram of the cross-section structure at point AA;

[0084] Figure 4 For the present invention Figure 3 A magnified schematic diagram of the structure at point I;

[0085] Figure 5 This is a schematic diagram of the structure of the first driving unit of the present invention;

[0086] Figure 6 This is a front view structural diagram of the present invention;

[0087] Figure 7 For the present invention Figure 6 Schematic diagram of the cross-sectional structure at point BB;

[0088] Figure 8 This is a schematic diagram of the structure of the second driving unit of the present invention;

[0089] Figure 9 This is a three-dimensional schematic diagram of the explosion of the drill bit of the present invention;

[0090] Figure 10 This is a plan view of the explosion of the drill bit of the present invention;

[0091] Figure 11 For the present invention Figure 10 Schematic diagram of the cross-sectional structure at CC;

[0092] Figure 12 This is a schematic diagram of the overall structure of the present invention with a disinfection component;

[0093] Figure 13 This is a schematic diagram of the overall structure of the present invention with a disinfection component from another angle;

[0094] Figure 14 This is a schematic diagram of the disinfection component structure of the present invention;

[0095] Figure 15 This is a schematic diagram of the overall structure of the present invention, where the transmission part is the second transmission component;

[0096] Figure 16 This is a bottom-view perspective three-dimensional structural diagram of the present invention, in which the transmission part is the second transmission component;

[0097] Figure 17 This is a bottom-view planar structural diagram of the present invention, showing that the transmission part is the second transmission member.

[0098] Figure 18 For the present invention Figure 17 Schematic diagram of the cross-sectional structure at DD.

[0099] Explanation of reference numerals in the attached figures

[0100] 1. Support frame;

[0101] 2. Fixing components; 2a. Moving fixing part; 2b. Static fixing part; 21. Mounting arc plate; 22. Fixing airbag; 23. Mounting rod; 24. Moving rod; 241. First spring; 25. First drive part; 251. Screw; 252. Handwheel; 253. Threaded outer sleeve; 254. Rotating disc; 255. Connecting sleeve; 256. Connecting plate; 257. Limiting rod; 26. Second drive part; 261. Self-driving rod; 262. Mounting plate;

[0102] 3. Power assembly; 31. Mounting housing; 311. Handle; 32. Motor; 321. Connecting shaft; 33. Sliding plate; 34. Guide rail;

[0103] 4. Drill head; 41. Drill rod; 411. First slot; 42. Sampling core tube; 421. Second protrusion; 43. Connector; 431. First protrusion; 432. Insertion block; 433. Second slot; 44. Connecting sleeve; 441. Insertion groove;

[0104] 5. Inflation assembly; 51. Inflation hose; 52. Inflation piston; 53. Transmission rod; 54. Transmission unit; 54a. First transmission component; 54b. Second transmission component; 541. Transformer hose; 5411. Vent bellows; 542. Transformer piston; 543. Synchronizing rod; 544. Fixing rod; 545. Guide tube; 5451. Lifting piston; 546. Connecting rod; 547. Buffer vertical rod; 5471. Second spring; 548. Sliding frame; 549. Push rod; 55. Connecting hose; 56. T-joint;

[0105] 6. Disinfection component; 61. Bearing ring; 611. Mounting ring; 612. Nozzle; 613. Pad; 62. Guide rod; 621. Third spring; 63. Liquid storage tube; 64. Liquid pusher piston; 65. Liquid guide tube. Detailed Implementation

[0106] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments.

[0107] like Figure 1 and Figure 2 As shown, the tree sample collection device includes a support frame 1, which is a rectangular or ring structure with a notch for entering and exiting the tree trunk. The support frame 1 is equipped with a fixing component 2 and a sampling component.

[0108] The fixing component 2 includes two dynamically symmetrically arranged moving fixing parts 2a and static fixing parts 2b. The moving fixing parts 2a move toward one side of the static fixing parts 2b by being driven by the first driving part 25 or the second driving part 26. The static fixing parts 2b are fixed on the support frame 1.

[0109] Both the dynamic fixing part 2a and the static fixing part 2b are provided with buffer parts that come into direct contact with the trees;

[0110] The power component 3 is slidably connected to the support frame 1 and located above the movable fixed part 2a. The power component 3 is connected to the drill head 4 through transmission. The power component 3 drives the drill head 4 to rotate, thereby drilling into the trunk of the tree to take samples.

[0111] The movable fixing part 2a and the static fixing part 2b are placed on both sides of the tree trunk through the notch. Then, the movable fixing part 2a is moved toward one side of the static fixing part 2b until the tree trunk is clamped between the movable fixing part 2a and the static fixing part 2b, thereby fixing the sampling device to the tree trunk. The power component 3 drives the drill head 4 to rotate, pushing the power component 3 toward one side of the tree trunk, thereby completing the sampling.

[0112] The buffer section creates a flexible connection between the sampling device and the tree trunk, which can prevent excessive damage to the tree bark and affect the survival of the tree after sampling.

[0113] Example 1

[0114] like Figure 1 As shown, the dynamic fixing part 2a and the static fixing part 2b have the same structure and both include a mounting arc plate 21. Multiple equally spaced fixing airbags 22 are fixed on the inwardly concave arc surface of the mounting arc plate 21.

[0115] The mounting arc plate 21 on the static fixed part 2b is fixed to the support frame 1 by the mounting rod 23. The moving fixed part 2a is connected to the first driving part 25 or the second driving part 26 on the other side of the support frame 1 through the telescopic and spring-loaded connecting part. The moving fixed part 2a and the static fixed part 2b are located on both sides of the notch.

[0116] The fixed airbag 22 has at least one-third of its internal space filled with air or inert gas, and the fixed airbag 22 on the mounting arc plate 21 constitutes a buffer part.

[0117] The thickness of the fixing airbags 22 decreases from both sides of the mounting plate 21 to the center of the device, so that most of the fixing airbags 22 can contact the tree trunk and provide stability during fixing.

[0118] The first drive unit 25 or the second drive unit 26 drives the mounting arc plate 21 constituting the moving fixing part 2a to move toward one side of the static fixing part 2b, so that the tree trunk is clamped between the moving fixing part 2a and the static fixing part 2b.

[0119] like Figure 3 and 4 As shown, the first drive unit 25 includes a screw 251 arranged in a horizontal direction. The surface of the screw 251 is fitted with a threaded outer sleeve 253 that engages with it. The top of the threaded outer sleeve 253 is fixedly connected to the surface of the support frame 1 or the sampling assembly and the support assembly through a connecting plate 256.

[0120] One end of the screw 251 is connected to the center of the rotating disk 254, and a connecting sleeve 44255 is fitted onto the surface of the rotating disk 254. The rotating disk 254 rotates inside the connecting sleeve 44255, and the connecting sleeve 44255 is fixedly connected to the connecting part.

[0121] A limiting rod 257 is arranged parallel to the screw 251 and on the same plane. The limiting rod 257 passes through the connecting plate 256 and is fixedly connected to the corresponding mounting arc plate 21. The limiting rod 257 can slide on the connecting plate 256.

[0122] A handwheel 252 is fixed to the other end of the screw 251.

[0123] When the handwheel 252 rotates the screw 251, the spindle 254 at the end of the screw 251 rotates inside the connecting sleeve 44255. The screw 251, which rotates inside the threaded outer sleeve 253, moves towards the side of the stationary fixed part 2b under the push of the threaded engagement, thereby causing the moving fixed part 2a to move towards the side of the stationary fixed part 2b.

[0124] As the screw 251 moves, the limiting rod 257 slides synchronously on the connecting plate 256.

[0125] If the screw 251 is rotated in the opposite direction, the movable fixed part 2a returns to its original position.

[0126] The second drive unit 26 includes a telescopic self-drive rod 261 arranged in a horizontal direction. The self-drive rod 261 is fixed on the mounting plate 262 and is fixedly connected to the connecting part. The mounting plate 262 is fixed on the support frame 1.

[0127] The self-driven rod 261 is preferably a pneumatic rod, an electric actuator, or a hydraulic rod.

[0128] The self-driving rod 261, which constitutes the second drive unit 26, extends or shortens to move the driving fixing unit 2a.

[0129] The connecting part includes a telescopic movable rod 24, the surface of which is fitted with a first spring 241. One end of the movable rod 24 is fixedly connected to the corresponding mounting arc plate 21, and the other end is fixedly connected to the outer sleeve of the first driving part 25 or the end of the self-driving rod 261 of the second driving part 26.

[0130] like Figure 4 As shown, the movable rod 24 is composed of two rods that slide and are sleeved together, and the two ends of the first spring 241 are respectively fixed to the surfaces of the two rods.

[0131] This technical solution employs a fixing structure with a multi-stage clamping process. When the fixing airbag 22 on the movable fixing part 2a contacts the tree trunk surface, it first achieves initial positioning and fixing of the tree trunk. At this stage, the clamping force is relatively small, facilitating adjustment of the sampling device's position and angle, and improving operational flexibility. Based on this, the movable fixing part 2a continues to move towards the static fixing part 2b, and the moving rod 24 retracts accordingly. Under the elastic force of the first spring 241, the fixing airbag 22 generates further clamping force, achieving secondary stable fixing of the tree trunk. This two-stage clamping method offers higher safety and more flexible control compared to traditional single-clamping structures.

[0132] Through a retractable and resilient connecting part incorporated into the device, the fixing structure can adaptively adjust the clamping force and fitting angle according to tree trunks of different diameters, shapes, and surface roughnesses, significantly improving the tolerance to tree errors during the fixing process. Even when the tree trunk surface is irregular or has a certain degree of tilt, reliable fitting and stable fixing can be achieved, effectively avoiding adverse phenomena such as excessive local pressure, bark tearing, or tissue damage caused by one-time clamping. In addition, the introduction of the elastic buffer structure creates a controllable dynamic response during the fixing process, which helps to disperse and evenly apply the clamping force to the tree trunk surface, effectively enhancing the device's ability to protect forest tissues. It is particularly suitable for non-destructive sampling of precious, young, or slow-growing tree species in actual forest environments.

[0133] Example 2

[0134] like Figure 6-7 As shown, it also includes an inflation assembly 5 that simultaneously inflates the fixed airbags 22 on the movable fixed part 2a and the static fixed part 2b, and the inflation assembly 5 is connected to the movable fixed part 2a in a driving connection.

[0135] The movement of the movable fixing part 2a causes the inflation component 5 to inflate the fixed airbags 22 on the movable fixing part 2a and the static fixing part 2b.

[0136] The inflation assembly 5 includes an inflation tube 51 fixed on the static fixed part 2b or the support frame 1. The inflation tube 51 is closed on one side and open on the other side. The inflation tube 51 is parallel to the moving direction of the moving fixed part 2a. An inflation piston 52 is slidably connected inside the inflation tube 51. The inflation piston 52 is slidably sealed to the inner wall of the inflation tube 51. A transmission rod 53 is fixed on the surface of the inflation piston 52. The transmission rod 53 is located near the open side of the inflation tube 51. The end of the transmission rod 53 is connected to the moving fixed part 2a through a transmission part 54.

[0137] A three-way pipe 56 communicating with its inner cavity is fixed on the closed end of the other side of the inflation pipe 51. The other two ports of the three-way pipe 56 are respectively connected to the fixed airbags 22 on the dynamic fixed part 2a and the static fixed part 2b through connecting hoses 55.

[0138] The fixed airbags 22 on the same mounting arc plate 21 are interconnected through pipes.

[0139] During tree securing, the device moves the movable securing part 2a towards the stationary securing part 2b, causing the transmission part 54 to drive the transmission rod 53 to move synchronously. This pushes the inflation piston 52 to force gas into the inflation tube 51, thus inflating the securing airbag 22. The securing airbag 22 expands rapidly under the influence of gas and adheres to the tree trunk surface, forming a flexible covering structure. The elastic deformation of the inflated airbag and the surface contact force achieve a stable clamping of the tree trunk. Compared to traditional rigid clamping mechanisms, this structure effectively reduces the concentrated stress caused by mechanical compression, significantly lowering the risk of bark crushing, cracking, and physiological damage. It is particularly suitable for rare trees requiring protection or tree species with thin, fragile bark.

[0140] In non-operational states, i.e., when the device is idle or during transportation, the fixing airbag 22 is in an inflated state. Its small overall size and thinness occupy minimal space, significantly improving the device's compactness and portability, making it easy for users to carry and quickly deploy on-site. At the same time, the inflated state of the airbag also provides more passage space between the dynamic fixing part 2a and the static fixing part 2b, making it easier to insert larger diameter tree trunks into the clamping area, thus enhancing the device's adaptability to trees of different sizes.

[0141] Meanwhile, since the structure adopts an on-demand inflation and instant release working mode in actual sampling operations, the gas in the fixed airbag 22 can be discharged in time after sampling is completed, avoiding the airbag being in a state of pressure expansion for a long time, effectively slowing down the fatigue aging process of rubber or elastic materials, thereby extending the service life of the fixed airbag 22 and reducing maintenance frequency and replacement costs.

[0142] The transmission part 54 is a first transmission member 54a or a second transmission member 54b with a staged inflation function. The first transmission member 54a is a rigid rod, and the two ends of the first transmission member 54a are respectively fixed to the end of the transmission rod 53 and the surface of the mounting arc plate 21 on the moving fixing part 2a.

[0143] After the moving rod 24 retracts, the second transmission component 54b drives the inflation component 5 to inflate the fixed airbag 22.

[0144] When the transmission part 54 is the first transmission member 54a, the rigid rod directly drives the inflation piston 52 to move. During the first time the moving fixed part 2a moves, it inflates the fixed airbags 22 on the two fixed parts. Under this premise, the gas inside the fixed airbags 22 can be emptied or a small amount of gas can be left to increase the stroke of the fixed part. When the entire collection device is fixed on the tree trunk, the fixed airbags 22 do not need to be filled with gas. The fixed airbags 22 only need to be spaced between the mounting arc plate 21 and the tree trunk surface.

[0145] Specifically, the second transmission component 54b includes a pressurizing unit and a connecting unit, wherein the connecting unit is slidably sleeved on the push rod 549, and the push rod 549 is fixed to the end of the transmission rod 53;

[0146] The retraction of the moving rod 24 causes the pressurizing unit to move, which in turn causes the plug rod 546 in the connecting unit to move upward. During the upward movement of the plug rod 546, the connection between the fixed connecting part and the push rod 549 is fixed. The push rod 549 moves synchronously, causing the transmission rod 53 to move, thereby causing the inflation assembly 5 to inflate the fixed airbag 22.

[0147] When the transmission part 54 is the second transmission member 54b, its connection with the inflation piston 52 is not established immediately during the initial movement of the moving fixed part 2a. Instead, a delayed linkage control strategy is implemented through the structural design. Specifically, in the initial stage of the moving fixed part 2a moving towards the stationary fixed part 2b, before the inflation piston 52 is activated, the second connecting member 43 does not play a connecting role. This avoids premature inflation of the fixing airbag 22 before the device is fully attached to the tree trunk, effectively preventing problems such as incomplete clamping or positioning deviation caused by premature inflation of the airbag.

[0148] As the moving fixing part 2a continues to move until the fixing airbag 22 is in full contact with the tree trunk surface, the moving rod 24 is compressed during the subsequent clamping process, thereby driving the pressurizing unit to start. The pressurizing unit drives the plug rod 546 in the connecting unit to move upward. During the movement, the plug rod 546 fixes the connection between the connecting part and the push rod 549, and finally drives the transmission rod 53 to move, causing the inflation component 5 to inflate the fixing airbag 22, realizing the active secondary expansion process of the fixing airbag 22 between the mounting arc plate 21 and the tree trunk.

[0149] The second transmission member 54b in this structural solution has a phased triggering function, causing the inflation of the fixed airbag 22 to occur in the fixed strengthening stage after the device has completed the initial clamping. The operation logic of "position first, then shape" achieved through delayed inflation helps the fixed airbag 22 to be filled more accurately and fully between the tree trunk epidermis and the mounting arc plate 21, avoiding problems such as restricted inflation, deflection, or bulging misalignment, and enhancing the clamping stability and flexible fitting.

[0150] In addition, another significant advantage of this solution is that since the inflation action does not affect the initial moving stroke of the moving and fixed parts 2a, during the inflation process of the fixed airbag 22, there is no need for refined restriction or precise control of the internal inflation volume. Even if there is a slight overcharge or undercharge, it will not interfere with the overall clamping path, greatly improving the fault tolerance and operational simplicity of the structure's use. At the same time, it avoids over-reliance on complex sensing or feedback control, enhancing the stability and practicality of the system.

[0151] In summary, the delayed inflation logic implemented by the second transmission member 54b not only optimizes the linkage relationship between the moving and fixed parts 2a and the airbag, improves the clamping accuracy and inflation efficiency, but also takes into account the operational flexibility and the physiological safety of the tree. It significantly enhances the overall intelligence level and on-site adaptability of the device, especially suitable for high-level scientific research sampling scenarios that require precise control of pressure and protection of the tree body.

[0152] Specifically, the pressurizing unit includes a pressure-changing tube 541 arranged in parallel with the moving rod 24. The pressure-changing tube 541 is fixed on the surface of the mounting arc plate 21 of the moving and fixed part 2a. One side of the pressure-changing tube 541 is closed and the other side is open. A pressure-changing piston 542 is slidably connected inside the pressure-changing tube 541, and the pressure-changing piston 542 is slidably and sealedly connected to the inner wall of the pressure-changing tube 541. One end of a synchronizing rod 543 is connected to the side of the pressure-changing piston 542 away from the mounting arc plate 21. The synchronizing rod 543 is preferably in a "U" shape structure. The other end of the synchronizing rod 543 passes through the open end of the pressure-changing tube 541 and is fixedly connected to the end of the moving rod 24 that undergoes relative movement;

[0153] A flexible air guide tube is connected to the closed end of the pressure-changing tube 541, and the air guide tube is connected to the connecting unit.

[0154] That is, when the moving and fixed part 2a contacts the tree trunk, the moving and fixed part 2a continues to move. One end of the moving rod 24 stops moving relative to the tree trunk, and the other end is the relative moving end, thus moving towards one side of the tree trunk. At this time, the first spring 241 deforms, and the inflation function starts to be gradually triggered.

[0155] The connecting unit includes a guide tube 545 arranged vertically. The bottom of the guide tube 545 is closed and the top is open. The guide tube 545 is fixed to the end of the moving rod 24 on the same side as the synchronizing rod 543 by a fixing rod 544.

[0156] A sliding frame 548 is fitted onto the surface of a push rod 549 and is slidably connected to the push rod 549. The top and bottom sidewalls of the sliding frame 548 are both penetrated by insertion through holes, and the surface of the push rod 549 is also provided with multiple equally spaced insertion through holes. The insertion through holes on the sliding frame 548 and the sliding through holes on the push rod 549 can be aligned.

[0157] A lifting piston 5451 is slidably and sealingly connected to the inner wall of the guide tube 545. A plug rod 546 is fixed at the top center of the lifting piston 5451. The plug rod 546 is inserted into the plug-in through hole at the bottom of the sliding frame 548. That is, when the lifting piston 5451 is in the initial position, the top of the plug rod 546 is inserted into the plug-in through hole at the bottom of the sliding frame 548.

[0158] The closed end of the bottom of the guide tube 545 and the closed end of the transformer tube 541 are connected to each other by a venting bellows 5411 of sufficient length.

[0159] The top of the plug rod 546 is provided with a spring-loaded and retractable buffer rod 547. The buffer rod 547 is slidably inserted into the cavity at the top of the plug rod 546, and a third spring 621 is fixed on the plug rod 546. The two ends of the third spring 621 are respectively fixed to the side wall of the cavity and the plug rod 546.

[0160] In the normal state of the third spring 621 and the piston plate in the initial position, there is a gap or overlap between the top of the insertion rod 546 and the bottom side wall of the push rod 549.

[0161] When the movable fixing part 2a initially moves, the first spring 241 keeps the moving rod 24 from extending or retracting. The movable fixing part 2a is driven by the fixing rod 544 until it initially touches the surface of the tree trunk. During this process, the movable fixing part 2a drives the guide tube 545 to move via the fixing rod 544, while the portion of the insertion rod 546 or the buffer vertical rod 547 at the end of the insertion rod 546 that extends into the bottom insertion through hole of the sliding frame 548 causes the sliding frame 548 to slide on the surface of the push rod 549, thereby preventing the inflation assembly 5 from being triggered. As the movable fixing part 2a continues to move towards the tree trunk until it initially reaches the surface of the tree trunk, initial contact and positioning with the tree trunk are achieved.

[0162] During the subsequent movement, the moving rod 24 begins to retract, displacing synchronously with the moving end, and driving the guide tube 545 to move via the fixed rod 544. During this process, the insertion rod 546 or the buffer vertical rod 547 at its end gradually extends into the insertion through-hole structure at the bottom of the sliding frame 548, causing the sliding frame 548 to slide along the guide direction on the surface of the push rod 549. However, the insertion lock between the push rod 549 and the sliding frame 548 is not yet triggered, nor is the inflation assembly 5 activated. This ensures that the device maintains a flexible fit during the initial clamping stage, preventing interference or accidental triggering caused by premature inflation.

[0163] As the moving fixed part 2a moves further, the relatively moving end of the moving rod 24 is activated, and drives the pressure-changing piston 542 to move in conjunction with the synchronous rod 543. The moving pressure-changing piston 542 forces the gas in the pressure-changing pipe 541 into the guide pipe 545 through the vent bellows 5411 with telescopic function, pushing the lifting piston 5451 in the guide pipe 545 to move upward. The upward movement of the lifting piston 5451 causes the insertion rod 546 to rise as a whole until the top of the insertion rod 546 or the top of its buffer rod accurately extends into the corresponding insertion through hole provided on the push rod 549. At this time, the precise positioning and mechanical locking connection between the connecting unit and the push-pull assembly are completed.

[0164] Based on this, as the relatively moving end moves further, the moving rod 24 continues to retract, driving the push rod 549 forward via the fixed rod 544, officially initiating the inflation action. The inflation assembly 5 begins to compress gas into the fixed airbag 22, achieving a stable and gradual inflation process.

[0165] Throughout the process, the insertion rod 546 continuously moves upward, and the push rod 549 continuously moves, thereby continuously driving the inflation assembly 5 to work. With the sampling device stably clamping the tree trunk and fixed in position, the fixing airbag 22 gradually and fully inflates until its internal volume reaches its limit and it no longer draws in gas. At this point, the entire clamping and fixing process of the device can be completed by stopping the movement of the moving fixing part 2a.

[0166] After sampling is completed, the first drive unit 25 or the second drive unit 26 drives the fixed part 2a to retract. At this time, under the action of the potential energy of the first spring 241 to recover its deformation, the pressure piston 542 and the lifting piston 5451 return to their original positions, releasing the plug-in lock between them and the push rod.

[0167] Example 3

[0168] like Figure 3 As shown, the power assembly 3 includes a mounting housing 31, a motor 32 is fixed inside the mounting housing 31, and a long strip-shaped sliding plate 33 is fixed at the bottom of the mounting housing 31. The sliding plate 33 is slidably connected to a guide rail 34, and the guide rail 34 is fixed to the support frame 1.

[0169] A connecting shaft 321 is fixed on the output end of the motor 32. The connecting shaft 321 passes through the side wall of the mounting housing 31 and protrudes from one side of the outer wall of the mounting housing 31. The connecting shaft 321 is connected to the drill head 4.

[0170] A handle 311 is fixed on the other outer wall of the mounting housing 31.

[0171] The motor 32 drives the drill head 4 to rotate via the connecting shaft 321. The handle 311 pushes the mounting shell 31 to move, thereby moving the rotating drill head 4 towards one side of the tree trunk to sample the trees.

[0172] Push the handle 311 to move the mounting housing 31, and the sliding plate 33 connected to the mounting housing 31 slides on the guide rail 34.

[0173] Example 4

[0174] like Figure 9-11 As shown, the drill head 4 includes a hollow drill rod 41, one side of which is a conical structure, and a spiral protrusion is provided on the end face of the conical structure. A sampling core tube 42 is sleeved inside the drill rod 41.

[0175] The sampling core tube 42 is inserted into the inner cavity of the connector 43, the drill rod 41 is sleeved on the outer wall of the connector 43, the connector 43 is inserted into the insertion groove 441 inside the connecting sleeve 44255 through the insertion block 432, and the connecting sleeve 44255 is fixed on the end of the connecting shaft 321.

[0176] The drill rod 41 has multiple first slots 411 inside that engage with the first protrusions 431 on the outer wall of the connector. The outer wall of the sampling core tube 42 has multiple second protrusions 421 that engage with the multiple second slots 433 on the inner wall of the connector 43.

[0177] The drill rod 41, sampling core tube 42, connector 43 and connecting sleeve 44255 are limited on the circumference by the insertion between the protrusion and the slot, so that they rotate synchronously.

[0178] The outer contours of the plug block 432 and the plug slot 441 are consistent, and the plug block 432 and the plug slot 441 are in clearance fit. The plug block 432 and the plug slot 441 are preferably in the shape of a "I" or a "+" shape.

[0179] The end of the sampling core tube 42 inserted into the inner cavity of the drill rod 41 is preferably in contact with the inner wall of the drill rod 41.

[0180] The drill rod 41 and the connector 43, the sampling core tube 42 and the connector 43, and the connector and connecting sleeve 44255 can be further fixed by the cooperation of pins and holes, thereby facilitating the retraction of the drill.

[0181] The pins and sockets are existing fixed structures, so they are not shown in the figure.

[0182] Example 5

[0183] like Figure 12-14 As shown, it also includes a disinfection component 6, which is disposed on the periphery of the drill bit 4 and is used to disinfect the sampling area during the sampling process.

[0184] The disinfection component 6 includes a support ring 61, which is sleeved around the drill head 4, and the drill head 4 is located between the support ring 61 and the mounting shell 31. The support ring 61 is connected to the power component 3 through at least two telescopic guide rods 62, specifically connected to the surface of the mounting shell 31. A third spring 621 is sleeved on the surface of the guide rod 62, and the two ends of the third spring 621 are respectively fixed to the two ends of the guide rod 62.

[0185] A hollow mounting ring 611 is fixed on the annular surface of the bearing ring 61. Multiple nozzles 612 arranged in an annular array are fixed on the annular surface of the mounting ring 611 away from the power component 3. The nozzles 612 are inclined toward one side of the drill head 4.

[0186] It also includes an injection section, which includes a storage tube 63 for storing disinfectant. The storage tube 63 is fixed on the mounting shell 31, and the end connected to the mounting shell 31 is a closed end. A pusher piston 64 is slidably and sealed on the inner wall of the storage tube 63. A guide tube 65 is fixed on the outer wall of the pusher piston 64. The guide tube 65 is fixedly connected to the mounting ring 611 and communicates with its inner cavity. The guide tube 65 communicates with the inner cavity of the storage tube 63, that is, the guide tube penetrates the pusher piston 64.

[0187] A liquid filling pipe is connected to the outer wall of the liquid storage pipe 63, and a sealing cover with a threaded connection is provided at the end of the liquid filling pipe.

[0188] The top and bottom of the side surface of the bearing ring 61 near the static fixing part 2b are both fixed with pads 613.

[0189] The liquid addition tube is not shown in the diagram.

[0190] During drilling, the operator manually pushes the mounting shell 31, causing the mounting shell 31 and the drill head 4 at its front end to move forward towards one side of the tree trunk. When the device approaches the tree trunk, the bearing ring 61 surrounding the drill head 4, or the flexible pad attached to its surface, first contacts the tree trunk surface, forming initial positioning. Subsequently, the mounting shell 31 continues to advance axially, causing the internal guide rod 62 to contract axially, and causing the third spring 621 on the guide rod 62 to undergo compression deformation, providing a certain elastic buffering force.

[0191] Meanwhile, since one end of the liquid-conducting rigid tube 65 is fixedly connected to the support ring 61, it remains relatively stationary with respect to the tree trunk surface. The fixed shell continues to move with the mounting shell 31, causing the liquid-pushing piston 64 connected to the other end of the liquid-conducting rigid tube 65 to slide relative to the liquid-receiving tube 63. This sliding process applies pressure to the liquid in the storage tube 63, causing it to be squeezed and transported through the liquid-conducting rigid tube 65 into the hollow cavity of the mounting ring 611. The liquid is then directed out or sprayed from multiple nozzles 612 on the mounting ring 611 to the area surrounding the drill bit 4, forming a surrounding localized disinfection environment. This allows for immediate and precise disinfection of the target sampling area before drilling and sampling.

[0192] The disinfection component 6 in this technical solution has the following specific advantages:

[0193] 1. Passive drive, self-consistent structure

[0194] The disinfection component 6 in this device can achieve liquid delivery and spraying by relying on the propulsion movement of the mounting shell 31. It does not require an additional power source, air source or other power components to drive it. It has a simple structure, low cost and low failure rate, which greatly improves the portability and field applicability of the device. It is especially suitable for forest sampling operations in the field in the absence of electricity.

[0195] 2. Contact trigger, precise start

[0196] The disinfection component 6 is activated only after the bearing ring 61 comes into contact with the tree trunk surface, ensuring that the disinfection action occurs at the critical stage before sampling, effectively avoiding waste of the disinfectant or accidental spraying, and improving the system's targeted operation and environmental friendliness.

[0197] 3. Localized, circumferential spraying improves coverage efficiency.

[0198] The nozzle 612 is located around the drill head 4 and is arranged in a ring or distributed structure. It can spray the sampling area around the drill head evenly, ensuring that the disinfection range is concentrated and the positioning is accurate, preventing omissions or incomplete disinfection, and improving the quality of subsequent samples and the reliability of research.

[0199] 4. Synchronous control and automatic coordination

[0200] By compressing the guide rod 62 and coordinating the liquid-pushing piston 64, automatic synchronous control of disinfection spraying and drilling propulsion is achieved, avoiding manual judgment or additional control operations, reducing operational complexity, and improving the intelligence level of the device.

[0201] 5. The buffer structure participates in the disinfection trigger, protecting the bark.

[0202] The buffering function of the guide rod 62 and the third spring 621 not only reduces the pressure damage to the bark caused by hard contact, but also serves as the power transmission mechanism of the disinfection component 6. It achieves functional reuse while protecting the physiological structure of the tree, with ingenious structure and novel technical ideas.

[0203] This invention is not limited to the embodiments described above. Any changes in shape or structure shall fall within the protection scope of this invention. The protection scope of this invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of this invention, but all such changes and modifications shall fall within the protection scope of this invention.

Claims

1. A tree sample collection device, comprising a support frame (1), wherein the support frame (1) is a rectangular or ring structure with a notch, and the support frame (1) is provided with a fixing component (2) and a sampling component, characterized in that: The fixing component (2) includes two dynamically symmetrically arranged moving fixing parts (2a) and static fixing parts (2b). The moving fixing part (2a) moves toward one side of the static fixing part (2b) by being driven by the first driving part (25) or the second driving part (26). The static fixing part (2b) is fixed on the support frame (1). Both the moving fixing part (2a) and the static fixing part (2b) are provided with buffer parts that come into direct contact with the trees; The power assembly (3) is slidably connected to the support frame (1) and located above the moving fixed part (2a). The power assembly (3) is connected to the drill head (4) via transmission.

2. The tree sample collection device as described in claim 1, characterized in that: Both the dynamic fixing part (2a) and the static fixing part (2b) include a mounting arc plate (21), and multiple equally spaced fixing airbags (22) are fixed on the inwardly concave arc surface of the mounting arc plate (21). The mounting arc plate (21) on the static fixing part (2b) is fixed to the support frame (1) by the mounting rod (23), and the dynamic fixing part (2a) is connected to the first drive part (25) or the second drive part (26) on the other side of the support frame (1) by the telescopic and spring-loaded connecting part.

3. The tree sample collection device as described in claim 2, characterized in that: The first drive unit (25) includes a screw (251) arranged in a horizontal direction. The surface of the screw (251) is fitted with a threaded outer sleeve (253) that engages with it. The top of the threaded outer sleeve (253) is fixedly connected to the surface of the support frame (1) or the sampling component and the support component through a connecting plate (256). One end of the screw (251) is connected to the center of the rotating disk (254), and the surface of the rotating disk (254) is fitted with a connecting sleeve (44)(255). The rotating disk (254) rotates inside the connecting sleeve (44)(255), and the connecting sleeve (44)(255) is fixedly connected to the connecting part.

4. The tree sample collection device as described in claim 2, characterized in that: The second drive unit (26) includes a telescopic self-drive rod (261) arranged in a horizontal direction. The self-drive rod (261) is fixed on the mounting plate (262) and the self-drive rod (261) is fixedly connected to the connecting part. The mounting plate (262) is fixed on the support frame (1).

5. The tree sample collection device as described in claim 2, characterized in that: It also includes an inflation assembly (5) that simultaneously inflates the fixed airbags (22) on the movable fixed part (2a) and the static fixed part (2b), and the inflation assembly (5) is connected to the movable fixed part (2a) in a driving connection. The movement of the movable fixing part (2a) causes the inflation assembly (5) to inflate the fixed airbags (22) on the movable fixing part (2a) and the static fixing part (2b).

6. The tree sample collection device as described in claim 5, characterized in that: The inflation assembly (5) includes an inflation tube (51) fixed on a static fixed part (2b) or a support frame (1). An inflation piston (52) is slidably connected inside the inflation tube (51). A transmission rod (53) is fixed on the surface of the inflation piston (52). The transmission rod (53) is located near the open side of the inflation tube (51). The end of the transmission rod (53) is connected to the dynamic fixed part (2a) through a transmission part (54). A three-way pipe (56) communicating with its inner cavity is fixed on the closed end of the other side of the inflation tube (51). The other two ports of the three-way pipe (56) are respectively connected to the fixed airbags (22) on the moving fixed part (2a) and the static fixed part (2b) through connecting hoses (55).

7. The tree sample collection device as described in claim 6, characterized in that: The transmission part (54) is a first transmission member (54a) or a second transmission member (54b) with a phased inflation function. The first transmission member (54a) is a rigid rod. The two ends of the first transmission member (54a) are respectively fixed to the end of the transmission rod (53) and the surface of the mounting arc plate (21) on the moving fixing part (2a). After the moving rod (24) retracts, the second transmission component (54b) drives the inflation assembly (5) to inflate the fixed airbag (22).

8. The tree sample collection device as described in claim 7, characterized in that: The second transmission component (54b) includes a pressurizing unit and a connecting unit, wherein the connecting unit is slidably sleeved on the push rod (549), and the push rod (549) is fixed on the end of the transmission rod (53); The moving rod (24) retracts, causing the pressurizing unit to move, which in turn causes the pressurizing unit to move the plug rod (546) in the connecting unit upward. During the upward movement of the plug rod (546), the connection between the fixed connecting part and the push rod (549) is moved. The push rod (549) moves synchronously, causing the transmission rod (53) to move.

9. The tree sample collection device as described in claim 8, characterized in that: The pressurization unit includes a transformer tube (541) arranged parallel to the moving rod (24). A transformer piston (542) is slidably connected inside the transformer tube (541). One end of a synchronizing rod (543) is connected to the side of the transformer piston (542) away from the mounting arc plate (21). The other end of the synchronizing rod (543) passes through the open end of the transformer tube (541) and is fixedly connected to the end of the moving rod (24) that is moving relative to it. A flexible air guide tube is connected to one closed end of the transformer tube (541), and the air guide tube is connected to the connecting unit.

10. The tree sample collection device as described in claim 9, characterized in that: The connecting unit includes a guide tube (545) arranged vertically, and the guide tube (545) is fixed to the end of the moving rod (24) on the same side as the synchronizing rod (543) by a fixing rod (544); A sliding frame (548) is fitted onto the surface of a push rod (549) and is slidably connected to the push rod (549). The top and bottom sidewalls of the sliding frame (548) are both penetrated by insertion through holes, and the surface of the push rod (549) is also provided with multiple equally spaced insertion through holes. A lifting piston (5451) is slidably and sealed to the inner wall of the guide tube (545). A plug rod (546) is fixed at the top center of the lifting piston (5451). The plug rod (546) is inserted into the plug-in through hole at the bottom of the sliding frame (548). That is, when the lifting piston (5451) is in the initial position, the top of the plug rod (546) is inserted into the plug-in through hole at the bottom of the sliding frame (548). The closed end at the bottom of the guide tube (545) and the closed end of the transformer tube (541) are connected to each other through a venting bellows (5411).

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