Tree sample collection device

Abstract

The application provides a tree sample collecting device, which comprises a first handle and a second handle, and the same side end of the first handle and the second handle is fixedly connected with a first blade and a second blade respectively, and the first blade and the second blade are rotationally connected to form a cross cutting structure; and the device further comprises a disinfection mechanism for disinfecting the first blade and the second blade during the opening and closing of the first handle and the second handle. The first blade and the second blade are driven to complete branch cutting through the opening and closing of the first handle and the second handle, and the disinfection mechanism is synchronously driven to disinfect the blades, thereby realizing the linkage of cutting and disinfection. The disinfection process is integrated into the cutting process, so that additional disinfection operation is not needed, the risk of cross contamination during continuous sampling can be effectively reduced, and the operation efficiency and the cleanliness of the blades are improved.

Description

Technical Field

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

[0002] Tree sampling is an important technical means in forestry resource surveys, pest and disease monitoring, plant physiological research, genetic analysis, and ecological environment assessment. By sampling different parts of trees, information such as tree growth status, nutritional level, disease occurrence, and environmental stress response can be obtained. Among these, branches and twigs are one of the most widely used sampling objects in tree sampling because they are easy to obtain, highly representative, and can simultaneously carry information about leaves, buds, and some xylem tissue.

[0003] Current methods for collecting tree branches typically involve using pruning shears or high-branch shears to directly cut and remove the target branches to obtain samples for subsequent testing, analysis, or preservation. However, in practice, to improve sample representativeness and the accuracy of test results, it is often necessary to continuously sample from multiple locations on the same tree or from multiple sample points on different trees. Therefore, sampling tools need to frequently come into contact with different trees or different branch tissues.

[0004] However, after branches are pruned, the cut surface typically releases sap, tissue fluid, and plant cell debris, all of which easily adhere to the surface of the pruning shears. Simultaneously, some trees may carry bacteria, fungi, viruses, or other pathogens, which can also adhere to the blade surface along with the sap during pruning. When workers use the same pruning shears to sample different branches consecutively, the residue adhering to the blade surface may be carried to the next sample, causing cross-contamination between different samples and affecting the accuracy and reliability of subsequent test results. In pest and disease surveys or pathogen detection scenarios, this may also increase the risk of pathogen transmission and spread.

[0005] Therefore, a tree sample collection device is provided to address the above-mentioned problems. Summary of the Invention

[0006] This invention provides a tree sample collection device to address the problem that pathogenic microorganisms easily adhere to the shearing blades during the existing tree branch sampling process, leading to cross-contamination between different samples and affecting the accuracy of test results, while also increasing the risk of pathogen transmission.

[0007] The present invention solves the above-mentioned technical problems through the following technical solutions: The present invention provides a tree sample collection device, including a first handle and a second handle. A first blade and a second blade are fixedly connected to the same side ends of the first handle and the second handle, respectively. The outer walls of one side of the first blade and the second blade are in contact with each other. The first handle and the second handle or the first blade and the second blade are rotatably connected to each other, so that when the first handle and the second handle open and close relative to each other, the first blade and the second blade are driven to rotate relative to each other around the hinge axis, forming a cross-shearing structure. It also includes a disinfection mechanism that can disinfect the first and second blades during the relative opening and closing of the first and second handles; A support component is provided between the first handle and the second handle to keep them in the open state.

[0008] In this technical solution, the disinfection mechanism includes a pressurizing component connected between a first handle and a second handle, and the pressurizing component is connected to a liquid dispensing component installed on the first handle or the second handle via a fluid medium. The first handle and the second handle move in opposite directions to squeeze the pressurizing component. The fluid medium inside the pressurizing component is squeezed into the liquid outlet component, which then drives the liquid outlet component to deliver the disinfectant inside to the first blade and the second blade. After the first and second handles move closer together, they are reset by the elastic force provided by the support assembly.

[0009] In this technical solution, the pressurizing component includes a pressurizing bladder that can be reset after being compressed. The pressurizing bladder is disposed between the first handle and the second handle, and the pressurizing bladder tends to be arranged in a horizontal direction. One end of the pressure bag near the middle area between the first handle and the second handle can be connected to a movable overlapping plate. The overlapping plate moves synchronously with the first handle or the second handle connected to it, and the pressure bag and the overlapping plate are not installed on the first handle and the second handle at the same time. The other end of the pressure bladder is connected to the liquid outlet assembly via a guide tube.

[0010] In this technical solution, the pressure bladder is provided with at least one resetting telescopic rod for guiding and resetting after compression. The resetting telescopic rod is arranged along the direction of compression of the pressure bladder, and the two ends of the resetting telescopic rod are respectively fixed to the inner walls of the two ends of the inner cavity of the pressure bladder. A reset spring is fitted onto the surface of the reset telescopic rod, and the two ends of the reset spring are fixed to the two ends of the reset telescopic rod.

[0011] In this technical solution, the overlapping plate is rotatably connected to the end of the transmission rod, and the end of the transmission rod is fixed to the inner wall of the first handle or the second handle by a fixing rod; A return spring is provided at the rotatable connection between the lap plate and the transmission rod, and the two ends of the return spring are fixed to the lap plate and the transmission rod respectively.

[0012] In this technical solution, the liquid dispensing assembly includes a liquid storage shell fixed in the inner cavity of the first handle or the inner cavity of the second handle, and the liquid storage shell has a cylindrical structure. A liquid-pushing piston plate is slidably connected in the inner cavity of the liquid storage shell. The liquid-pushing piston plate and the inner wall of the liquid storage shell are slidably sealed. The inner cavity of the liquid storage shell is divided into a liquid storage cavity and a transmission cavity by the liquid-pushing piston plate. The transmission chamber is connected to the pressurization assembly, and the liquid storage chamber is connected to the liquid guiding part fixed on the outer wall of the liquid storage shell. The end of the liquid guiding part extends to the first blade and the second blade.

[0013] In this technical solution, the liquid guiding part includes a liquid guiding tube, one end of which is fixed to the outer wall of the circular plane corresponding to the liquid storage shell, and the other end of which extends to the first blade or the second blade.

[0014] A flow divider shell is fixed to the end of the liquid guide tube. The flow divider shell is fixed to the surface of the first blade or the second blade, and multiple equally spaced liquid outlet tubes are fixed to the surface of the flow divider shell. The liquid outlet tubes extend into the liquid outlet through hole on the first blade or the second blade.

[0015] In this technical solution, the outer wall of the second handle near the second blade protrudes outward to form a protrusion that can overlap with the operator's thumb and forefinger, forming a streamlined structure that is easy to grasp with the hand. The second handle forms a streamlined curved surface structure that is easy to grasp with the four fingers other than the thumb. The second handle is equipped with a locking component that forces the first and second handles to converge, and the first and second handles are compressed after they converge.

[0016] In this technical solution, the locking assembly includes a lever that is slidably connected to the slide groove of the second handle. The sliding lever can push the locking plate to rotate. The locking plate is rotatably connected to the second handle, and the locking plate that rotates toward the first blade abuts against the protrusion of the first blade.

[0017] In this technical solution, the support assembly includes support blocks symmetrically fixed on the first handle and the second handle. The surfaces of the two support blocks are fitted with the two ends of the same support spring, and the two ends of the support spring are respectively fixed on the two support blocks.

[0018] In this technical solution, the first handle or the second handle is divided along its length direction at the end near the corresponding first blade or the second blade to form an independent drive section and a connecting section. The drive section and the connecting section are rotatably connected by a spring-loaded and reset connecting assembly. The connecting section is fixedly connected to the corresponding first blade or the second blade. The drive section is used for the operator to apply shearing force.

[0019] In this technical solution, the connecting assembly includes a connecting horizontal shaft and a connecting sleeve rotatably sleeved on the surface of the connecting horizontal shaft. A trigger spring is sleeved on the surface of the connecting horizontal shaft, and the two ends of the trigger spring are respectively fixed on the connecting horizontal shaft and the connecting sleeve. The connecting horizontal shaft and the connecting sleeve are fixed on the drive section and the connecting section, respectively.

[0020] 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.

[0021] The positive and progressive effects of this invention are as follows: In this invention, when cutting tree branches, the operator holds the first handle and the second handle and brings them close together, thereby driving the first blade and the second blade to gradually close together to complete the cutting operation.

[0022] During the aforementioned shearing action, the relative opening and closing movements of the first and second handles act as a driving source, triggering the disinfection mechanism to operate. This allows the disinfection mechanism to continuously or intermittently disinfect the first and second blades during the synchronized stroke of the blades' opening and closing. Thus, "integrated linkage between the shearing and disinfection actions" is achieved, eliminating the need for a separate disinfection drive step or independent operating mechanism.

[0023] By embedding the disinfection process into the natural operating stroke of the handle opening and closing, the disinfection action is completed synchronously with each cut. This not only avoids the risk of residual juice and microorganisms adhering to and spreading on the blade surface after cutting, but also effectively reduces the operation gaps and the probability of omissions caused by the need for pauses, separate spraying, or manual wiping in traditional methods.

[0024] Meanwhile, the structure utilizes the displacement and mechanical changes during the opening and closing of the handle as an energy input source, enabling the disinfection mechanism to automatically perform disinfection actions without adding extra operational burden, realizing a linkage working mode of "disinfection upon cutting and triggering upon opening and closing", thereby improving the cleanliness retention capability of the blade under continuous operation conditions and reducing the risk of cross-contamination between different branches. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 For the present invention Figure 1 A structural diagram from another perspective; Figure 3 For the present invention Figure 1 A top-view structural diagram; Figure 4 For the present invention Figure 3 Schematic diagram of the cross-sectional structure at point AA; Figure 5 For the present invention Figure 4 A magnified schematic diagram of the structure at point I; Figure 6 For the present invention Figure 1 A front view structural diagram; Figure 7 For the present invention Figure 6 Schematic diagram of the cross-sectional structure at BB; Figure 8 For the present invention Figure 7 A magnified schematic diagram of the structure at point J; Figure 9 This is a schematic diagram of the overall structure of the present invention with connecting components; Figure 10 For the present invention Figure 9 A front view structural diagram; Figure 11 For the present invention Figure 9 A schematic diagram of the structure viewed from below; Figure 12 For the present invention Figure 11 A magnified schematic diagram of the structure at point K.

[0026] Explanation of reference numerals in the attached figures 1. First handle; 2. First blade; 21. Liquid outlet hole; 3. Second handle; 31. Protrusion; 4. Second blade; 5. Locking assembly; 51. Pulley; 52. Locking plate; 53. Slide groove; 6. Support component; 61. Support block; 62. Support spring; 7. Pressurization assembly; 71. Pressurization bladder; 72. Transmission rod; 721. Fixing rod; 73. Overlap plate; 74. Return telescopic rod; 75. Return spring; 76. Guide tube; 8. Liquid dispensing assembly; 81. Liquid storage tank; 82. Liquid pusher piston plate; 83. Liquid guide tube; 84. Diverter shell; 85. Liquid dispensing tube; 86. Push-pull rod; 9. Connecting component; 91. Connecting horizontal axis; 92. Connecting sleeve; 93. Trigger coil spring; 94. Limit block. Detailed Implementation

[0027] 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.

[0028] like Figure 1 and Figure 2As shown, the tree sample collection device includes a first handle 1 and a second handle 3. A first blade 2 and a second blade 4 are fixedly connected to the same side ends of the first handle 1 and the second handle 3, respectively. The outer walls of one side of the first blade 2 and the second blade 4 are in contact with each other. The first handle 1 and the second handle 3 or the first blade 2 and the second blade 4 are rotatably connected to each other, so that when the first handle 1 and the second handle 3 open and close relative to each other, the first blade 2 and the second blade 4 are driven to rotate relative to each other around the hinge axis, thereby forming a cross-shearing structure. It also includes a disinfection mechanism that can disinfect the first blade 2 and the second blade 4 during the relative opening and closing of the first handle 1 and the second handle 3; A support component 6 is provided between the first handle 1 and the second handle 3 to keep them in an open state.

[0029] When cutting tree branches, by holding the first handle 1 and the second handle 3, the first handle 1 and the second handle 3 are brought together, causing the first blade 2 and the second blade 4 to close and cut the branch. During the above process, the opening and closing of the first handle 1 and the second handle 3 drives the sterilization mechanism to sterilize the first blade 2 and the second blade 4.

[0030] Example 1 In this embodiment, as Figure 4 As shown, the disinfection mechanism includes a pressurizing component 7 connected between the first handle 1 and the second handle 3, and the pressurizing component 7 is connected to the liquid dispensing component 8 installed on the first handle 1 or the second handle 3 via a fluid medium transmission. The first handle 1 and the second handle 3 move in opposite directions to squeeze the pressurizing component 7. The fluid medium inside the pressurizing component 7 is squeezed to the liquid outlet component 8, which then drives the liquid outlet component 8 to deliver the disinfectant inside to the first blade 2 and the second blade 4. After the first handle 1 and the second handle 3 move closer to each other, they are reset by the elastic force provided by the support component 6.

[0031] Example 2 like Figure 4 As shown, the pressurization assembly 7 includes a pressurization bladder 71 that can be reset after being compressed. The pressurization bladder 71 is disposed between the first handle 1 and the second handle 3, and the pressurization bladder 71 tends to be arranged in a horizontal direction. The pressure bladder 71 can overlap with the movable overlapping plate 73 at one end near the middle area between the first handle 1 and the second handle 3. The overlapping plate 73 moves synchronously with the first handle 1 or the second handle 3 connected to it. The pressure bladder 71 and the overlapping plate 73 are not installed on the first handle 1 and the second handle 3 at the same time. That is, the pressure bladder 71 and the overlapping plate 73 cannot be installed on the first handle 1 and the second handle 3 at the same time. For example, when the pressure bladder 71 is fixed on the first handle 1, the overlapping plate 73 can only be installed on the second handle 3. The other end of the pressure bladder 71 is connected to the liquid outlet assembly 8 via the guide tube 76.

[0032] Specifically, such as Figure 5 As shown, the pressure bladder 71 is provided with at least one reset telescopic rod 74 for guidance and reset after compression. The reset telescopic rod 74 is arranged along the direction of compression of the pressure bladder 71, and the two ends of the reset telescopic rod 74 are respectively fixed to the inner walls of the two ends of the inner cavity of the pressure bladder 71. A reset spring 75 is sleeved on the surface of the reset telescopic rod 74, and the two ends of the reset spring 75 are respectively fixed to the two ends of the reset telescopic rod 74.

[0033] When the pressure bladder 71 is compressed, the reset telescopic rod 74 is compressed, the reset spring 75 deforms, and continues to push the elastic potential energy of the reset telescopic rod 74 and the pressure bladder 71.

[0034] Preferred, such as Figure 5 As shown, the overlapping plate 73 is rotatably connected to the end of the transmission rod 72, and the end of the transmission rod 72 is fixed to the inner wall of the first handle 1 or the second handle 3 by the fixing rod 721. A return spring is provided at the rotatable connection between the overlapping plate 73 and the transmission rod 72, and the two ends of the return spring are fixed to the overlapping plate 73 and the transmission rod 72 respectively.

[0035] When the coil spring does not deform, when the overlapping plate 73 first overlaps with the end of the pressure bladder 71 during movement, the surface of the overlapping plate 73 is parallel and in contact with the end surface of the pressure bladder 71. During subsequent movement, the surface of the overlapping plate 73 is always in complete contact with the end surface of the pressure bladder 71. At this time, the return coil spring deforms and accumulates elastic potential energy to push the overlapping plate 73 to rotate and return to its original position.

[0036] In this embodiment, the overlapping plate 73 is mounted on the second handle 3, and the pressure bladder 71 is mounted on the first handle 1.

[0037] Example 3 like Figure 4 As shown, the liquid dispensing assembly 8 includes a liquid storage shell 81 fixed in the inner cavity of the first handle 1 or the inner cavity of the second handle 3. The liquid storage shell 81 has a cylindrical structure. A liquid-pushing piston plate 82 is slidably connected in the inner cavity of the liquid storage shell 81. The liquid-pushing piston plate 82 and the inner wall of the liquid storage shell 81 are slidably sealed. The inner cavity of the liquid storage shell 81 is divided into a liquid storage cavity and a transmission cavity by the liquid-pushing piston plate 82. The transmission chamber is connected to the pressurization component 7, and the liquid storage chamber is connected to the liquid guiding part fixed on the outer wall of the circular plane of the liquid storage shell 81. The end of the liquid guiding part extends to the first blade 2 and the second blade 4.

[0038] Specifically, the end of the guide tube 76 is fixed to the outer wall of the circular plane of the liquid storage shell 81 where the transmission cavity is located, and is connected to the inside of the transmission cavity.

[0039] After the pressure bladder 71 is compressed, the fluid medium inside it is forced into the transmission chamber through the guide tube 76, increasing the pressure inside the transmission chamber. Under the pressure, the liquid-pushing piston plate 82 moves in a preset direction and squeezes the liquid storage chamber, causing the volume of the liquid storage chamber to gradually decrease. As the volume of the liquid storage chamber decreases, the disinfectant stored inside is continuously pushed out and enters the liquid guiding section, and then transported to the first blade 2 and the second blade 4 through the liquid guiding section, so that the disinfectant covers the surface of the blades, thereby completing the automatic disinfection of the blades and the cut.

[0040] Specifically, a liquid addition pipe is connected to the outer wall of the circular plane corresponding to the liquid storage cavity on the surface of the liquid storage shell 81, and a cap is screwed onto the liquid addition pipe. This is used to add disinfectant.

[0041] Preferably, a push-pull rod 86 is fixed on the outer wall of the liquid-pushing piston rod constituting the transmission cavity, which is arranged axially along the liquid storage shell 81. The push-pull rod 86 passes through the circular planar side wall of the corresponding transmission cavity and is slidably sealed to the side wall.

[0042] When adding disinfectant, the disinfectant is drawn into the storage chamber by directly pulling the push rod 86. At the same time, the push rod 86 is slidably connected to the corresponding circular flat side wall, which guides the sliding of the push piston plate 82.

[0043] like Figure 7 and 8 As shown, the liquid guiding part includes a liquid guiding tube 83. One end of the liquid guiding tube 83 is fixed to the outer wall of the circular plane corresponding to the liquid storage shell 81 and communicates with the liquid storage cavity. The other end of the liquid guiding tube 83 extends to the first blade 2 or the second blade 4.

[0044] A diversion shell 84 is fixed to the end of the liquid guide tube 83. The diversion shell 84 is fixed to the surface of the first blade 2 or the second blade 4, and a plurality of equally spaced liquid outlet tubes 85 are fixed to the surface of the diversion shell 84. The liquid outlet tubes 85 extend into the liquid outlet through hole 21 on the first blade 2 or the second blade 4.

[0045] After the disinfectant inside the storage chamber is pressed into the liquid guide tube 83, it enters the diversion shell 84 and flows through the liquid outlet tube 85 connected to the diversion shell 84 to the liquid outlet through hole 21 on the surface of the first blade 2 or the second blade 4, and finally flows to the first blade 2 and the second blade 4, so as to make the cut, the first blade 2 and the second blade 4 effective when cutting branches.

[0046] Example 4 This embodiment is derived based on either Embodiment 2 or Embodiment 3. The fluid medium in this application is preferably air. An air inlet pipe is provided on the surface of the pressurization bladder 71, and both the air inlet pipe and the guide pipe 76 are equipped with one-way valves. Specifically, the one-way valve on the air inlet pipe only allows air to enter the pressurization bladder 71, and the one-way valve on the guide pipe 76 only allows air to enter the guide pipe 76 from the pressurization bladder 71.

[0047] Since the fluid medium used for transmission in this embodiment is air, which is only used to apply a pushing force to the piston plate 82 to drive the disinfectant output, the overall operating pressure of the system is low, belonging to a low-pressure intermittent driving condition. Therefore, the requirements for the sealing structure in this embodiment are mainly reflected in the reliable isolation between the gas side and the liquid side to prevent the disinfectant from seeping into the transmission cavity, rather than the absolutely high-level sealing requirements of a high-pressure container.

[0048] Specifically, the two sides of the pusher piston plate 82 correspond to the disinfectant storage space and the drive transmission space, respectively. If leakage occurs, the disinfectant may enter the transmission cavity, thereby causing pollution, obstruction or even corrosion to the transmission components. Therefore, the pusher piston plate 82 and the inner wall of the storage shell 81 need to maintain a reliable sliding seal to achieve effective isolation between the gas and liquid sides.

[0049] To ensure sealing reliability, given the small inner diameter of the liquid reservoir 81, the following drag-reducing and low-friction sealing structure solutions are commonly used in the prior art to reduce frictional resistance and improve driving responsiveness during the reciprocating sliding process of the piston plate 82: for example, an elastic sealing ring is set on the outer periphery of the piston plate 82 to form a pre-tight sealing structure, achieving a tight seal through elastic deformation while reducing local contact stress; or a low-friction coating (such as a polytetrafluoroethylene coating) is set on the surface of the sealing ring to reduce the coefficient of dynamic friction; a piston ring structure made of self-lubricating polymer material can also be used to reduce sliding resistance; in addition, a lubricating film can be formed by introducing a small amount of lubricating medium at the contact interface, thereby reducing the motion resistance under small inner diameter conditions while ensuring sealing performance.

[0050] Through the above structural design, the liquid-pushing piston plate 82 can achieve a reliable sliding and sealing fit within the inner wall of the liquid storage shell 81, which not only prevents the disinfectant from leaking into the transmission cavity, but also improves the smoothness of movement and the stability of liquid discharge under low-pressure driving conditions.

[0051] Example 5 In this embodiment, the outer wall of the second handle 3 near the second blade 4 protrudes outward to form a protrusion 31 that can overlap with the operator's thumb and forefinger, forming a streamlined structure that is easy to grasp with the hand. The second handle 3 forms a streamlined curved surface structure that is easy to grasp with the four fingers other than the thumb. Both the liquid storage shell 81 and the pressure bladder 71 are fixed in the inner cavity of the first handle 1 to facilitate transmission; The second handle 3 is provided with a locking component 5 that forces the first handle 1 and the second handle 3 to converge. After the first handle 1 and the second handle 3 converge, the support component 6 is compressed.

[0052] like Figure 4 As shown, the locking assembly 5 includes a lever 51 slidably connected to the slide groove 53 of the second handle 3. The sliding lever 51 can push the locking plate 52 to rotate. The locking plate 52 is rotatably connected to the second handle 3, and the locking plate 52 rotating in the direction of the first blade 2 abuts against the protrusion of the first blade 2.

[0053] After the branches are collected, the first handle 1 and the second handle 3 are closed, and then the lever 51 is pushed upward. The lever 51 pushes the locking plate 52 to move to one side of the first blade 2 until it touches the protrusion of the first blade 2. At this time, due to the contact between the locking plate 52 and the protrusion of the first blade 2, the first blade 2 and the second blade 4 cannot rotate relative to each other, and the support assembly 6 is compressed.

[0054] like Figure 4 As shown, the support assembly 6 includes support blocks 61 symmetrically fixed on the first handle 1 and the second handle 3. The surfaces of the two support blocks 61 are fitted with the two ends of the same support spring 62, and the two ends of the support spring 62 are respectively fixed on the two support blocks 61.

[0055] When the first handle 1 and the second handle 3 are closed, the two support blocks 61 abut against each other, the support spring 62 is compressed, and the elastic potential energy that pushes the two first handles 1 and the second handle 3 to open is accumulated.

[0056] Example 6 like Figure 9-12 As shown, the first handle 1 or the second handle 3 is separated along its length direction at one end near the corresponding first blade 2 or second blade 4 to form an independent drive section and a connecting section. The drive section and the connecting section are rotatably connected by a spring-loaded and reset connecting assembly 9. The connecting section is fixedly connected to the corresponding first blade 2 or second blade 4. The drive section is used for the operator to apply shearing force.

[0057] When the resistance encountered by the corresponding blade in cutting the tree branch is small, the drive section and the connecting section rotate synchronously; when the resistance encountered by the corresponding blade in cutting the tree branch increases to a preset level, the drive section rotates relative to the connecting section to increase the compression stroke of the pressurizing component 7, thereby increasing the output of disinfectant in the liquid dispensing component 8.

[0058] This technical solution uses the shearing resistance of the blade as a characterizing parameter reflecting the tissue state and contamination risk of the branches, thereby achieving adaptive adjustment of the disinfectant output and enabling graded control of the disinfection process according to the shearing conditions.

[0059] Specifically, when the shear resistance is low, the corresponding branch tissue is relatively soft and the risk of cut contamination is low. The present invention controls the liquid discharge component 8 to perform disinfection treatment with a low output, thereby reducing the interference of excessive disinfectant adhesion on the original physicochemical properties of the sample, while reducing disinfectant consumption and reducing liquid overflow contamination.

[0060] When the shear resistance is high, the corresponding branches are highly lignified, the cut structure is complex, and the risk of contamination exposure is greater. This invention increases the output of the liquid dispensing component 8, so that the disinfectant can fully cover irregular cut surfaces and crack areas, and enhance the ability to remove potential pathogen residues and cross-contamination, thereby improving the reliability and coverage effect of disinfection treatment.

[0061] In summary, this invention can achieve dynamic hierarchical adjustment of disinfection output based on shear resistance, which improves disinfection uniformity and anti-contamination effect under complex shear conditions while ensuring sample integrity and detection accuracy.

[0062] The connecting assembly 9 includes a connecting horizontal shaft 91 and a connecting sleeve 92 rotatably sleeved on the surface of the connecting horizontal shaft 91. A trigger spring 93 is sleeved on the surface of the connecting horizontal shaft 91, and the two ends of the trigger spring 93 are respectively fixed on the connecting horizontal shaft 91 and the connecting sleeve 92. The connecting horizontal shaft 91 and the connecting sleeve 92 are fixed on the drive section and the connecting section, respectively.

[0063] When the sampled branch tissue is relatively soft, the trigger spring 93 undergoes slight deformation or no deformation, and the drive section and connecting section rotate synchronously; when the sampled branch tissue is relatively hard, the drive section rotates relative to the connecting section, continuing to compress the pressure assembly 7 until the branch tissue is cut or severed by the first blade 2 and the second blade 4, or the drive section rotates to its limit relative to the connecting section, and then the drive section and connecting section rotate synchronously again.

[0064] Specifically, the two ends of the connecting horizontal shaft 91 are fixed to the ends of the drive section, and the connecting sleeve 92 is fixed to the ends of the connecting section by the connecting block.

[0065] Preferably, in this embodiment, the second handle 3 is divided into two parts to form a connecting section and a driving section.

[0066] 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 first handle (1) and a second handle (3), wherein a first blade (2) and a second blade (4) are fixedly connected to the same side ends of the first handle (1) and the second handle (3), respectively, and the first handle (1) and the second handle (3) or the first blade (2) and the second blade (4) are rotatably connected to each other to form a cross-cutting structure, characterized in that: It also includes a disinfection mechanism that can disinfect the first blade (2) and the second blade (4) during the relative opening and closing of the first handle (1) and the second handle (3); A support assembly (6) is provided between the first handle (1) and the second handle (3) to keep them in an open state.

2. The tree sample collection device as described in claim 1, characterized in that: The disinfection mechanism includes a pressurizing component (7) connected between a first handle (1) and a second handle (3), and the pressurizing component (7) is connected to a liquid dispensing component (8) installed on the first handle (1) or the second handle (3) via a fluid medium. The first handle (1) and the second handle (3) move relative to each other to squeeze the pressurizing component (7). After the fluid medium inside the pressurizing component (7) is squeezed to the liquid outlet component (8), the liquid outlet component (8) is driven to deliver the disinfectant inside to the first blade (2) and the second blade (4).

3. The tree sample collection device as described in claim 2, characterized in that: The pressurization assembly (7) includes a pressurization bladder (71) that can be reset after being compressed, the pressurization bladder (71) being disposed between the first handle (1) and the second handle (3); The pressure bladder (71) can overlap with a movable connecting plate (73) at one end near the middle area between the first handle (1) and the second handle (3). The connecting plate (73) moves synchronously with the first handle (1) or the second handle (3) connected to it, and the pressure bladder (71) and the connecting plate (73) are not installed on the first handle (1) and the second handle (3) at the same time. The other end of the pressure bladder (71) is connected to the liquid outlet assembly (8) via a guide tube (76).

4. The tree sample collection device as described in claim 3, characterized in that: The overlapping plate (73) is rotatably connected to the end of the transmission rod (72), and the end of the transmission rod (72) is fixed to the inner wall of the first handle (1) or the second handle (3) by a fixing rod (721); A reset spring is provided at the rotatable connection between the overlapping plate (73) and the transmission rod (72), and the two ends of the reset spring are fixed on the overlapping plate (73) and the transmission rod (72) respectively.

5. The tree sample collection device as described in claim 2, characterized in that: The liquid dispensing assembly (8) includes a liquid storage shell (81) fixed in the inner cavity of the first handle (1) or the inner cavity of the second handle (3), and the liquid storage shell (81) is a cylindrical structure. The liquid storage shell (81) is slidably connected to a liquid-pushing piston plate (82) in its inner cavity. The liquid-pushing piston plate (82) and the inner wall of the liquid storage shell (81) are slidably sealed together. The inner cavity of the liquid storage shell (81) is divided into a liquid storage cavity and a transmission cavity by the liquid-pushing piston plate (82). The transmission chamber is connected to the pressurization assembly (7) and the liquid storage chamber is connected to the liquid guide portion fixed on the outer wall of the liquid storage shell (81). The end of the liquid guide portion extends to the first blade (2) and the second blade (4).

6. The tree sample collection device as described in claim 5, characterized in that: The liquid guiding part includes a liquid guiding tube (83), one end of which is fixed to the outer wall of the circular plane corresponding to the liquid storage shell (81), and the other end of which extends to the first blade (2) or the second blade (4).

7. The tree sample collection device as described in claim 6, characterized in that: A diversion shell (84) is fixed to the end of the liquid guide tube (83). The diversion shell (84) is fixed to the surface of the first blade (2) or the second blade (4). A plurality of equally spaced liquid outlet tubes (85) are fixed to the surface of the diversion shell (84). The liquid outlet tubes (85) extend into the liquid outlet through hole (21) on the first blade (2) or the second blade (4).

8. The tree sample collection device as described in claim 1, characterized in that: The outer wall of the second handle (3) near the second blade (4) protrudes outward to form a protrusion (31) that can be joined with the thumb and forefinger of the operator, forming a streamlined structure that is easy to grasp. The second handle (3) forms a streamlined curved surface structure that is easy to grasp with the other four fingers besides the thumb.

9. The tree sample collection device as described in claim 2, characterized in that: The first handle (1) or the second handle (3) is separated along its length direction at one end near the corresponding first blade (2) or second blade (4) to form an independent drive section and a connecting section. The drive section and the connecting section are rotatably connected by a spring-back reset connecting assembly (9). The connecting section is fixedly connected to the corresponding first blade (2) or second blade (4). The drive section is used for the operator to apply shearing force.

10. The tree sample collection device as described in claim 9, characterized in that: The connecting assembly (9) includes a connecting horizontal shaft (91) and a connecting sleeve (92) rotatably sleeved on the surface of the connecting horizontal shaft (91). A trigger spring (93) is sleeved on the surface of the connecting horizontal shaft (91). The two ends of the trigger spring (93) are respectively fixed on the connecting horizontal shaft (91) and the connecting sleeve (92). The connecting horizontal shaft (91) and the connecting sleeve (92) are respectively fixed on the driving section and the connecting section.

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