Sampling device for monitoring pine wood nematode disease

Abstract

The invention relates to the field of insect disease monitoring, in particular to a sampling device for pine wood nematode disease monitoring, which comprises a fixed base plate, a guide hole is formed in the base plate, and arc-shaped clamping plates are rotationally connected to the two sides of the base plate respectively; a guide hole is formed in the base plate, a drill rod is installed in the guide hole, a motor is connected to the end of the drill rod, a push-pull plate is arranged on the outer ring of the motor, push-pull blocks are connected to the two sides of the push-pull plate, lead screws are connected to the push-pull blocks, extension plates are arranged on the two sides of the base plate, motors are fixedly connected to the extension plates, the lead screws are driven by the motors to rotate at a constant speed, and the drill rod is fed at a constant speed to drill into the pine tree. The feeding speed can be achieved by controlling the rotating speed of the motor, the device can adapt to drilling and sampling of pine trees with different hardness, the drilling unit is fixedly installed on the pine tree through the fixing unit, manual supporting is not needed to provide extrusion force, the labor intensity is reduced, and the device can also be fixedly installed on branches and trunks growing in an inclined upward or transverse extending mode. The device is flexible, convenient and wider in application range.

Description

Technical Field

[0001] The invention relates to the field of insect disease monitoring, in particular to a sampling device for monitoring pine wood nematode disease. Background Art

[0002] Pine wood nematode is a devastating insect pest that can infect more than 70 species of conifers, including 57 species of pine. Pine wood nematodes generally enter the xylem of pine trees through wounds caused by feeding by vector insects such as pine brown alternating beetles, parasitize in the resin ducts, and move while multiplying in large numbers, gradually spreading throughout the tree and causing it to die. Pine wood nematode disease is extremely destructive to forestry resources. Once a pine tree is infected, it can die in as little as 40 days, and entire pine forests can be destroyed within 3 to 5 years.

[0003] The prevention and control of pine wood nematode disease is very difficult, and it is necessary to prevent the disease from invading at the source. The current control method generally starts with sampling, that is, collecting samples on the spot and monitoring the density of pine wood nematodes in the samples. Then control is carried out, that is, by drilling holes and injecting medicine, or releasing natural enemy insects such as swollen-legged wasps and flower beetles, or spraying pathogenic microorganisms such as Beauveria bassiana and Metarhizium anisopliae, to control the population density of vector insects.

[0004] In the sampling stage, on-site drilling sampling is carried out. In order to improve the control effect, multiple pine trees are generally selected for sampling in the pine wilt disease area, and the number of holes drilled on each pine tree is adjusted according to the number of wounds on its surface. The number of holes drilled is huge. At present, the drilling sampling method for pine wilt disease is to use a hand drill in combination with a woodworking drill to drill out sawdust, and then the sawdust is collected and brought back to the laboratory to monitor pine wilt disease. Finally, based on the experimental results, the method of controlling pine wilt disease is selected.

[0005] The hand drill is used in conjunction with a woodworking drill to drill out and collect wood chips. First of all, in terms of collection efficiency, multiple drilling sampling points are labor-intensive and difficult to complete. At the same time, there are many types of coniferous trees, and the hardness of each coniferous tree is different. For some harder woods, drilling sampling will not only reduce efficiency, but also uneven drilling feed speed will cause damage to the hand drill.

[0006] Therefore, in order to solve the above problems, a sampling device for monitoring pine wood nematode disease is proposed. Summary of the invention

[0007] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0008] The technical solution adopted by the present invention to solve the technical problem is: a sampling device for monitoring pine wood nematode disease described in the present invention comprises a fixing unit and a drilling unit; The fixing unit comprises a base plate, a guide hole is provided on the base plate, arc-shaped clamping plates are rotatably connected to both sides of the base plate, an extension rod is provided at the end of the clamping plate, and a barb is provided on the extension rod; A drilling unit is installed in the guide hole, and the drilling unit includes a drill rod, the end of the drill rod is connected to a motor, a push-pull plate is provided on the outer ring of the motor, push-pull blocks are connected to both sides of the push-pull plate, a screw rod is connected to the push-pull block, the ends of the screw rod extend toward both sides of the base plate, and extension plates are provided on both sides of the base plate, the motor is fixedly connected to the extension plate, and the output end of the motor is fixedly connected to the end of the screw rod.

[0009] Preferably, a notch No. 1 is provided on the upper edge of the extension plate; two parallel vertical plates are provided on the housing of the motor, the housing of the motor is embedded in the notch No. 1, and two adjacent vertical plates are clamped on the extension plate; Two notches are provided on both sides of the push-pull plate, and the push-pull blocks are embedded in the second notches.

[0010] Preferably, both sides of the push-pull plate are provided with card slots on both the front and rear surfaces, and the card slots are located above and below the No. 2 notch; a card is provided on one side of the push-pull block, the push-pull block is embedded in the No. 2 notch, and the card is embedded in the card slot.

[0011] Preferably, a sleeve is fixedly connected to the housing of the motor, and the outer ring of the sleeve is provided with threads; a threaded hole adapted to the sleeve is provided in the middle position of the push-pull plate, and the sleeve is threadedly connected in the threaded hole.

[0012] Preferably, the upper edge of the push-pull plate is rotatably connected with a fastening bolt, and the end of the fastening bolt passes through the threaded hole.

[0013] Preferably, the interior of the drill rod is hollow, the end of the drill rod with the drill cutter is open, and a plurality of groups of crushing teeth arranged in a circular array are provided inside the drill rod, and the ends of the crushing teeth are extended along the axis direction of the drill rod; a discharge port is provided on the drill rod, the discharge port is connected to the interior of the drill rod, and the discharge port is arranged close to the motor.

[0014] Preferably, two limiting rings are provided on the outer ring of the drill rod, the limiting rings are arranged on both sides of the discharge port, and a receiving shell is provided between the two limiting rings; The receiving shell is arranged in half, the upper half of which is arc-shaped and wrapped around the discharge port on the drill rod, the middle part of which is provided with a feed port, the lower half of which is rectangular, and the halves of the receiving shell are fixed together by magnet adsorption.

[0015] Preferably, a discharge hole is provided at the bottom of the material receiving shell, and a counterweight plug is filled in the discharge hole.

[0016] Preferably, a No. 3 notch is provided at the top of the threaded hole, the No. 3 notch is opposite to the fastening bolt, and an arc block is provided in the No. 3 notch, which is rotatably connected to the fastening bolt.

[0017] Preferably, the fixing unit further includes a U-shaped clamping rod.

[0018] The present invention is beneficial in that: 1. In the present invention, the sampling device is designed, and the motor drives the screw rod to rotate at a uniform speed, so that the drill rod can be fed into the pine tree at a uniform speed, and the feeding speed can be achieved by controlling the motor speed, which can be adapted to the drilling sampling of pine trees of different hardness, and the drilling unit is fixed on the pine tree by the fixing unit, and no human support is required to give the squeezing force, thereby reducing the labor intensity. Furthermore, for the branches and trunks that are inclined upward or extend horizontally, the drilling unit can also be installed and fixed by the fixing unit, which is flexible and convenient, and has a wider range of applications.

[0019] 2. In the present invention, the hollow drill rod is designed, and the crushing teeth will gradually crush part of the sample surface and push the debris generated by the crushing to the discharge port. The debris falls from the discharge port and can be caught, which is convenient for the collection of debris samples; part of the sample is directly crushed by the crushing teeth, and there is no need for further crushing and refining of the sample, which reduces the subsequent crushing environment and improves the overall efficiency of sample experimental detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A first perspective stereoscopic view of the sampling device of the present invention; Figure 2 A second perspective stereoscopic view of the sampling device of the present invention; Figure 3 It is a side view of the sampling device of the present invention; Figure 4 A top view of the sampling device of the present invention; Figure 5 is a three-dimensional diagram of the clamping plate in the present invention; Figure 6 It is a schematic diagram of the structure of the push-pull plate in the present invention; Figure 7 It is a three-dimensional diagram of the cooperation between the push-pull plate and the screw rod in the present invention; Figure 8 It is a three-dimensional diagram of the coordination between the motor and the push-pull plate in the present invention; Fig. 9 is a cross-sectional view of a drill pipe in the present invention; Fig.10 It is a three-dimensional diagram of the cooperation between the drill rod and the material receiving shell in the present invention; Fig.11 It is a three-dimensional diagram of the material receiving shell in the present invention; Fig.12This is a schematic diagram of the structure of one half of the material receiving shell in the present invention; Fig.13 It is a schematic diagram of the cooperation between the barb and the clamping rod in the present invention.

[0021] In the figure: 1. base plate; 2. guide hole; 3. clamping plate; 4. extension rod; 5. barb; 6. drill rod; 7. motor; 8. push-pull plate; 9. push-pull block; 10. screw rod; 11. extension plate; 12. motor; 13. notch No. 1; 14. vertical plate; 15. notch No. 2; 16. slot; 17. card; 18. sleeve; 19. threaded hole; 20. fastening bolt; 21. crushing tooth; 22. discharge port; 23. limit ring; 24. receiving shell; 25. feed port; 26. counterweight plug; 27. notch No. 3; 28. arc block; 29. ​​clamping rod. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0023] Reference Figure 1 - Figure 8 , a sampling device for pine wood nematode disease monitoring, comprising a fixing unit and a drilling unit; The fixing unit comprises a base plate 1, a guide hole 2 is formed on the base plate 1, arc-shaped clamping plates 3 are rotatably connected to both sides of the base plate 1, an extension rod 4 is formed at the end of the clamping plate 3, and a barb 5 is formed on the extension rod 4; A drilling unit is installed in the guide hole 2, and the drilling unit includes a drill rod 6, the end of the drill rod 6 is connected to a motor 7, a push-pull plate 8 is provided on the outer ring of the motor 7, push-pull blocks 9 are connected to both sides of the push-pull plate 8, a screw 10 is connected to the push-pull block 9, the ends of the screw 10 extend toward both sides of the base plate 1, and extension plates 11 are provided on both sides of the base plate 1, a motor 12 is fixedly connected to the extension plate 11, and the output end of the motor 12 is fixedly connected to the end of the screw 10; In this embodiment, the clamping plate 3 is rotatably connected to the base plate 1 through a torsion spring. The clamping plate 3 is clamped on the surface of the pine tree by the torsion force of the torsion spring. At the same time, in order to improve stability, some sharp thorns can be provided on the inner side wall of the clamping plate 3. The clamping plate 3 is clamped on the surface of the pine tree, and multiple thorns penetrate into the interior of the pine bark to stabilize the sampling device. Some pine trees lack bark on their surfaces, making it difficult to stably fix the clamping plate 3 by means of torsion springs and thorns. For this reason, an extension rod 4 is provided at the end of the clamping plate 3, and a barb 5 is provided on the extension rod 4. The clamping plate 3 is stably clamped on the pine tree with a rope, that is, the clamping plate 3 is wrapped on the surface of the pine tree, and then tied to the barb 5 with a rope, and the rope is tightened to fix it. At the same time, it can also be applied to pine trees with different diameters, and can also be fixed on trunks that are inclined upward or growing horizontally. The installation and fixing are more flexible and can be applied to different installation and fixing scenarios; In this embodiment, the specific operation steps of the device are as follows: Step 1: Install and fix. The clamping plate 3 is clamped and fixed on the surface of the pine tree, and the upper drill rod 6 is installed and fixed on the output end of the motor 7; Step 2, drilling and sampling, first drive the motor 7 to drive the drill rod 6 to rotate, when the drum rotation speed reaches a preset value, then drive the motor 12, the motor 12 drives the screw rod 10 to rotate slowly, and at the same time the screw rod 10 pulls the push-pull plate 8 to move toward the base plate 1 through the push-pull block 9, the drill rod 6 gradually approaches the surface of the pine tree, and then drills a hole, and at the same time drills out the wood chips and collects the wood chips; Step 3, remove the device, drive the motor 7 and the motor 12 to rotate in the opposite direction, the screw 10 pushes the push-pull block 9, and at the same time the push-pull block 9 pushes the push-pull plate 8 away from the pine tree, and the push-pull plate 8 takes the drill rod 6 out of the hole; As for the subsequent operation, just follow step one, step two and step three in sequence; in this embodiment, the designed sampling device drives the screw rod 10 to rotate at a uniform speed through the motor 12, so that the drill rod 6 can be fed into the pine tree at a uniform speed, and the feeding speed can be achieved by controlling the rotation speed of the motor 12, which can be adapted to the drilling sampling of pine trees of different hardness, and the drilling unit is fixed on the pine tree through the fixing unit, and no human support is required to give the squeezing force, thereby reducing the labor intensity. Moreover, for the branches and trunks that are inclined upward or extending horizontally, the drilling unit can also be installed and fixed by the fixing unit, which is flexible and convenient, and has a wider range of applications.

[0024] Reference Figure 1 - Figure 8 The upper edge of the extension plate 11 is provided with a first notch 13; the housing of the motor 12 is provided with two parallel vertical plates 14, the housing of the motor 12 is embedded in the first notch 13, and two adjacent vertical plates 14 are clamped on the extension plate 11; The two sides of the push-pull plate 8 are provided with a second notch 15, and the push-pull block 9 is embedded in the second notch 15; Taking into account the working environment of the monitoring and sampling personnel, generally in a plant area with many trees, there are many dead branches and rotten leaves on the ground, which makes it difficult to walk. Moreover, carrying the sampling device will naturally affect the work efficiency. For this reason, the sampling device is designed to be detachable, and the fixing unit and the drilling unit are divided into multiple components. Multiple sampling staff members share the components, which reduces labor and enables the staff to walk freely in a complex working environment; the clamping plate 3 and the base plate 1 connected to it are a component, the motor 12, the screw rod 10 and the push-pull block 9 are a component, the push-pull plate 8 and the motor 7 and the drill tube are a component, and the mobile power supply component in this embodiment provides power for the motor 12 and the motor 7. The above four components can be shared by four staff members; During the subsequent assembly, the motor 12 is clamped in the No. 1 notch 13 through two vertical plates 14, and the push-pull block 9 is embedded in the No. 2 notch 15, so that the sampling device can be quickly assembled without affecting the sampling efficiency. Moreover, when a component is damaged, it can be directly replaced without replacing the entire sampling device, saving costs.

[0025] Reference Figure 1 - Figure 8 , both sides of the push-pull plate 8 are provided with card slots 16, and the card slots 16 are located above and below the second notch 15; a card 17 is provided on one side of the push-pull block 9, and the push-pull block 9 is embedded in the second notch 15, and the card 17 is embedded in the card slot 16; Taking into account the various usage situations of the sampling device, it can drill tree branches and trunks that grow inclined upward and horizontally. At this time, it is necessary to consider the overall stability of the sampling device, which is divided into multiple components and then assembled. The firmness of the assembly determines the operating and fixing conditions during the drilling sampling process, especially the cooperation between the push-pull block 9 and the No. 2 notch 15, which is easy to disassemble and install. When the motor 7 rotates at high speed, the vibration force generated can easily cause the push-pull block 9 to detach from the No. 2 notch 15 by itself. For this reason, a card 17 is preferably provided on the push-pull block 9. The card 17 made of steel sheet material can be stably embedded in the card slot 16, so that the push-pull block 9 is stabilized in the No. 2 notch 15, thereby ensuring the stable operation of the sampling device.

[0026] Reference Figure 1 - Figure 8 A sleeve 18 is fixedly connected to the housing of the motor 7, and the outer ring of the sleeve 18 is provided with a thread; a threaded hole 19 adapted to the sleeve 18 is provided in the middle position of the push-pull plate 8, and the sleeve 18 is threadedly connected in the threaded hole 19; A sleeve 18 with a thread is installed on the housing of the motor 7, so that the motor 7 and the push-pull plate 8 can be disassembled and assembled; if the motor 7 is damaged after long-term use, the motor 7 can be directly replaced, which is also a measure to reduce expenditure costs; and when assembling the sampling device, the sleeve 18 can be rotated to adjust the distance between the end of the drill rod 6 and the surface of the pine tree, so that the end of the drill rod 6 can be attached to the surface of the pine tree and start to rotate, and then when the motor 12 drives the screw rod 10 to rotate, the drill rod 6 can quickly contact the pine tree for effective drilling sampling, instead of there being a distance between the end of the drill rod 6 and the surface of the pine tree, resulting in the end of the drill rod 6 contacting the surface of the pine tree only after the screw rod 10 rotates for a period of time, which affects the drilling sampling efficiency.

[0027] Reference Figure 1 - Figure 8 The upper edge of the push-pull plate 8 is rotatably connected with a fastening bolt 20, and the end of the fastening bolt 20 penetrates into the threaded hole 19; The sleeve 18 is threadedly connected to the push-pull plate 8. When the motor 7 rotates, the drill rod 6 and the pine tree rotate relative to each other, and the rotational resistance will force the sleeve 18 and the push-pull plate 8 to rotate relative to each other. For this reason, it is necessary to stabilize the sleeve 18 and the push-pull plate 8. A fastening bolt 20 is provided. After the sleeve 18 is connected to the threaded hole 19, the fastening bolt 20 is rotated, and the end of the fastening bolt 20 is squeezed on the sleeve 18. The sleeve 18 and the motor 7 are squeezed and stabilized on the push-pull plate 8 to ensure that when the motor 7 drives the drill rod 6, the drill rod 6 can stably drill into the inside of the pine tree.

[0028] Reference Figure 1 - Fig.12 The drill rod 6 is hollow inside, the end of the drill rod 6 with the drill cutter is open, and a plurality of groups of crushing teeth 21 arranged in an annular array are arranged inside the drill rod 6, and the ends of the crushing teeth 21 are extended along the axis direction of the drill rod 6; a discharge port 22 is opened on the drill rod 6, the discharge port 22 is connected to the inside of the drill rod 6, and the discharge port 22 is arranged close to the motor 7; When the solid drill rod 6 is used to drill a pine tree, the drilled debris is squeezed out from the edge of the drilled hole, and the debris will fall to the ground. The situation on the ground is complicated. During the picking process, foreign objects may be mixed in, which will affect the accuracy of the subsequent sample experimental data results. For this reason, a hollow drill rod 6 is designed. The hollow drill rod 6 can store the drilled samples in advance inside it, and then discharge them from the discharge port 22. The working principle of the hollow drill rod 6 is that the drill rod 6 drills into the inside of the pine tree, and some samples located in the hollow part of the drill rod 6 will contact the crushing teeth 21, while the roots of some samples are still fixed to the pine tree at this time, and there is relative rotation between the crushing teeth 21 and some samples. From the open end of the drill rod 6 to the closed end of the drill rod 6, the crushing teeth 21 are gradually extended in the direction of the axis of the drill rod 6. The crushing teeth 21 are spirally distributed in the hollow, so the crushing teeth 21 will gradually crush the surface of some samples and push the debris generated by the crushing to the discharge port 22. The debris falls from the discharge port 22 and can be caught, which is convenient for the collection of debris samples; some samples are directly crushed by the crushing teeth 21, and there is no need to further crush and refine the samples subsequently, which reduces the subsequent crushing environment and improves the overall efficiency of sample experimental detection.

[0029] Reference Figure 1 - Fig.12 Two limiting rings 23 are provided on the outer ring of the drill rod 6, the limiting rings 23 are arranged on both sides of the discharge port 22, and a receiving shell 24 is provided between the two limiting rings 23; The receiving shell 24 is arranged in half, the upper half of the receiving shell 24 is in an arc shape and wrapped around the discharge port 22 on the drill rod 6, the middle part of the receiving shell 24 is provided with a feed port 25, the lower half of the receiving shell 24 is in a rectangular shape, and the receiving shell 24 arranged in half is fixed together by magnet adsorption; The material receiving shell 24 is arranged in half, and the circular gap surrounded by the upper halves of the two material receiving shells 24 matches the surface of the drill rod 6. When the drill rod 6 rotates, it will not drive the material receiving shell 24 to rotate; a magnetic plate is provided on the side walls of the two halves of the material receiving shell 24 attached to each other, so that the two halves of the material receiving shell 24 can be easily installed and disassembled; the crushing teeth 21 crush part of the sample, and the generated debris is pushed to the discharge port 22 by the rotation of the crushing teeth 21, and then the debris falls into the material receiving shell 24 along the feed port 25, which is convenient for collecting the sample.

[0030] Reference Figure 1 - Fig.12 The bottom of the receiving shell 24 is provided with a discharge hole, and a counterweight plug 26 is filled in the discharge hole; The samples are collected in the receiving shell 24. When they need to be taken out, the two halves of the receiving shell 24 can be directly disassembled and then poured out from the feed port 25. The counterweight plug 26 can also be directly rotated to discharge the collected debris samples from the discharge hole. The design of the counterweight plug 26 is used to move the center of gravity of the receiving shell 24 downward, so that the receiving shell 24 can be stably located below the drill rod 6 and rotate stably to prevent the receiving shell 24 from rotating with the drill rod 6.

[0031] Reference Figure 6 - Figure 7A No. 3 notch 27 is provided at the top of the threaded hole 19, the No. 3 notch 27 is opposite to the fastening bolt 20, and an arc block 28 is provided in the No. 3 notch 27, and the arc block 28 is rotatably connected to the fastening bolt 20; the arc block 28 is provided in the No. 3 notch 27, and when the fastening bolt 20 is rotated, the arc block 28 is squeezed on the thread of the sleeve 18, and the extrusion surface of the arc block 28 has a texture that is compatible with the thread on the surface of the sleeve 18, thereby protecting the thread on the surface of the sleeve 18.

[0032] Reference Figure 1 , Figure 2 and Fig.13 The fixing unit also includes a U-shaped clamping rod 29; the clamping rod 29 can be used to replace the rope for binding the barbs 5. When drilling holes in some pine trees with smaller diameters, the clamping plate 3 can completely wrap the pine tree, and the extension rods 4 overlap up and down. At this time, the elastic clamping rod 29 can be embedded in the two barbs 5 to fix the extension rods 4 together, so that the two clamping plates 3 can be stably clamped on the surface of the pine tree.

[0033] Working principle: The specific operation steps of the sampling device are as follows: Step 1: Install and fix. The clamping plate 3 is clamped and fixed on the surface of the pine tree, and the two barbs 5 are fixed with a rope or a clamping rod 29, so that the clamping plate 3 can stably clamp the pine tree. Then, the motor 12 is installed in the No. 1 notch 13, and the push-pull block 9 is installed in the No. 2 notch 15. Then, the drill rod 6 is installed and fixed on the output end of the motor 7, and the casing 18 is rotated so that the end of the drill rod 6 passes through the guide hole 2 on the base plate 1 and is attached to the surface of the pine tree. Step 2, drilling and sampling, first drive the motor 7 to drive the drill rod 6 to rotate, when the drum rotation speed reaches a preset value, then drive the motor 12, the motor 12 drives the screw rod 10 to rotate slowly, and at the same time the screw rod 10 pulls the push-pull plate 8 to move toward the base plate 1 through the push-pull block 9, the drill rod 6 gradually approaches the surface of the pine tree, and then drills a hole, and at the same time drills out the wood chips and collects the wood chips; Step 3, remove the device, drive the motor 7 and the motor 12 to rotate in the opposite direction, the screw 10 pushes the push-pull block 9, and at the same time the push-pull block 9 pushes the push-pull plate 8 away from the pine tree, and the push-pull plate 8 takes the drill rod 6 out of the hole; As for the subsequent operation, just follow step one, step two and step three in sequence; in this embodiment, the designed sampling device drives the screw rod 10 to rotate at a uniform speed through the motor 12, so that the drill rod 6 can be fed into the pine tree at a uniform speed, and the feeding speed can be achieved by controlling the rotation speed of the motor 12, which can be adapted to the drilling sampling of pine trees of different hardness, and the drilling unit is fixed on the pine tree through the fixing unit, and no human support is required to give the squeezing force, thereby reducing the labor intensity. Moreover, for the branches and trunks that are inclined upward or extending horizontally, the drilling unit can also be installed and fixed by the fixing unit, which is flexible and convenient, and has a wider range of applications.

[0034] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A sampling device for monitoring pine wood nematode disease, characterized in that: It includes a fixing unit and a drilling unit; The fixing unit comprises a base plate (1), a guide hole (2) is provided on the base plate (1), arc-shaped clamping plates (3) are rotatably connected to both sides of the base plate (1), an extension rod (4) is provided at the end of the clamping plate (3), and a barb (5) is provided on the extension rod (4); A drilling unit is installed in the guide hole (2), and the drilling unit comprises a drill rod (6), the end of the drill rod (6) is connected to a motor (7), a push-pull plate (8) is provided on the outer ring of the motor (7), both sides of the push-pull plate (8) are connected to push-pull blocks (9), a screw rod (10) is connected to the push-pull blocks (9), the ends of the screw rod (10) extend in directions on both sides of the base plate (1), and extension plates (11) are provided on both sides of the base plate (1), a motor (12) is fixedly connected to the extension plate (11), and the output end of the motor (12) is fixedly connected to the end of the screw rod (10).

2. A sampling device for monitoring pine wood nematode disease according to claim 1, characterized in that: A first notch (13) is formed on the upper edge of the extension plate (11); two parallel vertical plates (14) are provided on the outer shell of the motor (12); the outer shell of the motor (12) is embedded in the first notch (13), and two adjacent vertical plates (14) are clamped on the extension plate (11); No. 2 notches (15) are provided on both sides of the push-pull plate (8), and the push-pull block (9) is embedded in the No. 2 notches (15).

3. A sampling device for monitoring pine wood nematode disease according to claim 1, characterized in that: Both sides of the push-pull plate (8) are provided with card slots (16), and the card slots (16) are located above and below the No. 2 notch (15). One side of the push-pull block (9) is provided with a card (17), and the push-pull block (9) is embedded in the No. 2 notch (15), and the card (17) is embedded in the card slot (16).

4. A sampling device for monitoring pine wood nematode disease according to claim 1, characterized in that: A sleeve (18) is fixedly connected to the outer shell of the motor (7), and the outer ring of the sleeve (18) is provided with threads; a threaded hole (19) adapted to the sleeve (18) is provided in the middle position of the push-pull plate (8), and the sleeve (18) is threadedly connected in the threaded hole (19).

5. A sampling device for monitoring pine wood nematode disease according to claim 4, characterized in that: The upper edge of the push-pull plate (8) is rotatably connected to a fastening bolt (20), and the end of the fastening bolt (20) penetrates into the threaded hole (19).

6. A sampling device for monitoring pine wood nematode disease according to claim 1, characterized in that: The drill rod (6) is hollow inside, the end of the drill rod (6) with the drill cutter is open, and a plurality of groups of crushing teeth (21) arranged in a circular array are provided inside the drill rod (6), and the ends of the crushing teeth (21) are extended along the axis direction of the drill rod (6); a discharge port (22) is provided on the drill rod (6), the discharge port (22) is connected to the inside of the drill rod (6), and the discharge port (22) is arranged close to the motor (7).

7. A sampling device for monitoring pine wood nematode disease according to claim 6, characterized in that: Two limiting rings (23) are provided on the outer ring of the drill rod (6), the limiting rings (23) are arranged on both sides of the discharge port (22), and a receiving shell (24) is provided between the two limiting rings (23); The material receiving shell (24) is arranged in half, the upper half of the material receiving shell (24) is in an arc shape and wraps around the position of the discharge port (22) on the drill rod (6), the middle part of the material receiving shell (24) is provided with a material inlet (25), the lower half of the material receiving shell (24) is in a rectangular shape, and the halves of the material receiving shell (24) are fixed together by magnet adsorption.

8. The sampling device for monitoring pine wood nematode disease according to claim 7, characterized in that: A discharge hole is provided at the bottom of the material receiving shell (24), and a counterweight plug (26) is filled in the discharge hole.

9. The sampling device for monitoring pine wood nematode disease according to claim 5, characterized in that: A third notch (27) is provided at the top of the threaded hole (19), the third notch (27) is opposite to the fastening bolt (20), and an arc block (28) is provided in the third notch (27), the arc block (28) is rotatably connected to the fastening bolt (20).

10. The sampling device for monitoring pine wood nematode disease according to claim 1, characterized in that: The fixing unit also includes a U-shaped clamping rod (29).

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