Bursaphelenchus xylophilus infection point collecting device

Abstract

A pine wood nematode infection point collecting device belongs to the technical field of nematode collection and comprises a pine wood body and further comprises an upper shell and a lower shell, the upper shell and the lower shell form a shell with an inner cavity communicated, the width of the inner cavity of the upper shell is larger than that of the inner cavity of the lower shell, and the right side wall of the upper shell and the right side wall of the lower shell are located on the same vertical line. An edge with a blade is arranged on the left side of the top end of the upper shell, fixing pins are installed on the front side wall and the rear side wall of the lower shell respectively, and a frame is arranged on the right side of the upper shell and arranged on the outer sides of the upper shell and the lower shell. According to the utility model, complete and representative sheet-shaped tree samples can be extracted, the original natural distribution state of nematodes at pine wood cannot be destroyed, the infection condition of the nematodes in trees can be more comprehensively and accurately analyzed, the distribution integrity and authenticity of the nematodes in the trees during detection are effectively maintained, and the detection accuracy is improved. The upper shell does not need to be manually pushed for sampling, and compared with manual handheld equipment for sampling, sampling is more accurate, and operation is convenient.

Description

Technical Field

[0001] This utility model belongs to the field of nematode collection technology, specifically relating to a device for collecting infection points of pine wood nematodes. Background Technology

[0002] Pine wilt nematode is a parasitic nematode that mainly harms pine trees. The nematode is slender and worm-like. It is spread by insect vectors such as the pine sawyer beetle. After entering the pine tree, it multiplies in large numbers in tissues such as resin ducts, causing water transport to be obstructed, needles to turn yellow and wither, and eventually the entire pine tree to die. It is a major pathogen causing devastating diseases in pine forests.

[0003] A related technology (publication number CN214149905U) discloses a sampling tool for monitoring pine wilt disease, including a hand-held saw. Its key feature is a retainer at the front end of the handle of the hand-held saw, with a quick-release collection hopper mounted on the retainer. The width of the collection hopper is greater than the width of the saw blade, and a sampling bag is movably connected to the bottom of the collection hopper. This tool simplifies forest management and forest patrol by attaching the pine wood sampling collection device to a commonly used hand-held saw for felling dead pine trees. It is easy to assemble and disassemble, small in size and lightweight, easy to carry, and collects wood chips that meet laboratory requirements in a single pass, avoiding inaccurate raw data caused by secondary crushing, shortening experimental time, and enabling standardized on-site classification and flexible sampling.

[0004] In the aforementioned technical solution, the operation method of using a hand saw to destroy trees and obtain samples results in wood chips. However, from the perspective of the current practical needs for detecting the specific location of nematodes in trees and their surrounding microenvironment, this hand saw sampling method, because it breaks the tree sample into fine particles, severely disrupts the original natural distribution of nematodes at the sampling point. It is difficult to extract complete and representative sheet-like tree samples, which seriously hinders the comprehensive and accurate analysis of nematode infection status in trees and fails to maintain the integrity and authenticity of nematode distribution within the tree during detection. Utility Model Content

[0005] To address the shortcomings of existing sampling methods that utilize hand-held saws, which break tree samples into fine particles, severely disrupting the natural distribution of nematodes at the original sampling point and making it difficult to extract complete and representative sheet-like tree samples, this invention provides a pine wood nematode infection point collection device. This device can extract complete and representative sheet-like tree samples without disrupting the natural distribution of nematodes in the pine wood, enabling a more comprehensive and accurate analysis of nematode infection status and effectively maintaining the integrity and authenticity of nematode distribution during detection. The specific technical solution is as follows:

[0006] A device for collecting pine wood nematode infection points includes a pine wood body, an upper shell, and a lower shell. The upper shell and the lower shell form a shell with a connected inner cavity. The inner cavity width of the upper shell is greater than that of the lower shell, and the right side walls of the upper shell and the lower shell are on the same vertical line. The top left side of the upper shell is provided with a blade edge. Fixing pins are respectively installed on the front and rear side walls of the lower shell. A frame is provided on the right side of the upper shell. The frame is located outside the upper shell and the lower shell. The front and rear sides of the frame are respectively provided with first grooves. The fixing pins are slidably embedded in the inner cavity of the first grooves. A drive frame is provided on the outer side of the frame that can be raised and lowered. The front and rear side walls of the drive frame are respectively provided with second grooves. The fixing pins are slidably embedded in the inner cavity of the second grooves.

[0007] In the above technical solution, a first mounting plate is installed on the right side wall of the frame, a first cylinder is installed on the first mounting plate, and the output end of the first cylinder is connected to the drive frame.

[0008] In the above technical solution, a sliding assembly is provided between the lower housing and the frame;

[0009] The sliding assembly includes a sleeve fixedly installed on the right side wall of the lower housing, and a limiting post installed in the frame body, wherein the sleeve is slidably fitted onto the limiting post.

[0010] In the above technical solution, a handle is installed on the right side wall of the lower housing.

[0011] In the above technical solution, a mounting bracket is installed at the top of the frame, a second mounting plate is installed on the right side wall of the mounting bracket, a second cylinder is installed on the second mounting plate, the output end of the second cylinder is connected to a base, and a cutting blade is detachably installed in the base.

[0012] In the above technical solution, the bottom end of the lower housing is rotatably connected to one side of the base plate, and an L-shaped plate is installed on the other side of the base plate. The left side wall of the lower housing is provided with an insertion hole in the horizontal direction, and a pin is inserted into the L-shaped plate, with the end of the pin extending into the inner cavity of the insertion hole in a pluggable manner.

[0013] In the above technical solution, limit strips are opened on the front and rear side walls of the frame in the vertical direction, and a slider is slidably embedded in the inner cavity of the limit strip, and the slider is fixedly installed on the inner side wall of the drive frame.

[0014] In the above technical solution, a controller is installed on the right side wall of the lower housing, and the controller is electrically connected to the first cylinder and the second cylinder respectively.

[0015] The pine wilt nematode infection point collection device of this utility model has the following advantages compared with the prior art:

[0016] I. The existing method of sampling using a hand saw, which breaks tree samples into fine particles, severely disrupts the original natural distribution of nematodes at the sampling point, making it difficult to extract complete and representative sheet-like tree samples. This seriously hinders the comprehensive and accurate analysis of nematode infection status in trees and fails to maintain the integrity and authenticity of nematode distribution within the tree during detection. This invention addresses this problem by using an upward-moving upper shell to sample along the main bark of the pine wood. A cutting blade can cut the sample, allowing for the extraction of complete and representative sheet-like tree samples without disrupting the natural distribution of nematodes in the pine wood. This enables a more comprehensive and accurate analysis of nematode infection status within the tree, effectively maintaining the integrity and authenticity of nematode distribution during detection.

[0017] Second, this utility model, through the opening of the first cylinder, can ultimately achieve the synchronous upward movement of the fixing pin, the lower shell, and the upper shell, thereby realizing the cutting and sampling of the main bark of pine wood. It eliminates the need for manual pushing of the upper shell for sampling, making it more accurate and convenient to operate compared to manual handheld sampling.

[0018] Third, this utility model is equipped with a whole sample collection function, which can realize the sample entering the inner cavity of the lower shell for temporary storage, and realize the automatic collection after the infection point is collected, and will not be affected by the external environment.

[0019] IV. This utility model can open or close the lower part of the lower housing through the insertion hole, L-shaped plate, and pin, so as to facilitate the unloading of the sample from the lower housing after sampling.

[0020] In summary, this invention can extract complete and representative sheet-like tree samples without disrupting the natural distribution of nematodes in the pine wood. It can also comprehensively and accurately analyze the infection status of nematodes in trees, effectively maintaining the integrity and authenticity of the distribution of nematodes within the tree during detection. It eliminates the need for manual pushing of the upper shell for sampling, making it more accurate and convenient to operate compared to manual handheld sampling. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the structure of this utility model;

[0023] Figure 3 This is a schematic diagram of the structure of this utility model;

[0024] Figure 4 This is a schematic diagram of the structure of this utility model;

[0025] Figure 5 This is a schematic diagram of the structure of this utility model;

[0026] Figure 6 This is a schematic diagram of the structure of this utility model;

[0027] Figure 7 This is a schematic diagram of the structure of this utility model;

[0028] Figures 1 to 7 In the middle, 1. Upper shell, 2. Lower shell, 3. Fixing pin, 4. Frame, 5. First groove, 6. Drive frame, 7. Second groove, 8. First mounting plate, 9. First cylinder, 10. Sleeve, 11. Limiting post, 12. Handle, 13. Mounting bracket, 14. Second mounting plate, 15. Second cylinder, 16. Seat, 17. Cutting blade, 18. Base plate, 19. L-shaped plate, 20. Insertion hole, 21. Pin, 22. Loose material body, 23. Limiting strip, 24. Slider, 25. Controller. Detailed Implementation

[0029] The following are specific implementation cases and appendices. Figures 1 to 7 The present invention will be further described below, but the present invention is not limited to these embodiments.

[0030] See Figures 1 to 7As shown, a pine wood nematode infection point collection device includes a pine wood body 22, an upper shell 1, and a lower shell 2. The upper shell 1 and the lower shell 2 form a shell with interconnected internal cavities. The width of the inner cavity of the upper shell 1 is greater than the width of the inner cavity of the lower shell 2, thereby ensuring that the upper shell 1 has a larger opening at the top and the lower shell 2 has a smaller opening at the bottom. When the upper shell 1 is in contact with the side wall of the pine wood body 22 for sampling, the lower shell 2 will not touch the right side wall of the pine wood body 22. Furthermore, the right side walls of the upper shell 1 and the lower shell 2 are located on the same vertical line. The top left side of the upper shell 1 is provided with a blade edge. This ensures that the outer skin of the pine wood body 22 can be easily removed when the upper shell 1 is attached to the pine wood body 22 for sampling. Fixing pins 3 are installed on the front and rear side walls of the lower shell 2. A frame 4 is provided on the right side of the upper shell 1, located on the outside of both the upper shell 1 and the lower shell 2. First grooves 5 are obliquely opened on the front and rear sides of the frame 4, and the fixing pins 3 are slidably embedded in the inner cavity of the first grooves 5. A drive frame 6 is vertically movable on the outside of the frame 4, and second grooves 7 are opened on the front and rear side walls of the drive frame 6, with the fixing pins 3 slidably embedded in the inner cavity of the second grooves 7. (See main references) Figure 1 and Figure 2 As shown, a first mounting plate 8 is installed on the right side wall of the frame 4, and a first cylinder 9 is installed on the first mounting plate 8. The output end of the first cylinder 9 is connected to the drive frame 6.

[0031] The first cylinder 9 is activated to drive the drive frame 6 to move upward, which in turn drives the fixing pin 3 to move upward along the second groove 7 and the first groove 5, so as to cause the upper shell 1 and the lower shell 2 to move upward gradually. Since the top left side of the upper shell 1 has a blade edge, as the upper shell 1 moves upward, it can scrape up the infected point of the pine wood body 22 from bottom to top.

[0032] Main references Figure 2 As shown, a sliding assembly is provided between the lower housing 2 and the frame 4; the sliding assembly includes a sleeve 10 fixedly installed on the right side wall of the lower housing 2, and a limiting post 11 installed in the frame 4. The sleeve 10 is slidably sleeved on the limiting post 11. When the upper housing 1 and the lower housing 2 move vertically, the sleeve 10 can be driven to move along the outer wall of the limiting post 11, thereby restricting the movement direction of the upper housing 1 and the lower housing 2 to the vertical direction.

[0033] See Figure 2 As shown, a handle 12 is installed on the right side wall of the lower housing 2. The movement of the handle 12 can drive the upper housing 1 and the lower housing 2 to move vertically in sync, making it easier for manual operation.

[0034] Main references Figure 4As shown, a mounting bracket 13 is installed at the top of the frame 4, a second mounting plate 14 is installed on the right side wall of the mounting bracket 13, a second cylinder 15 is installed on the second mounting plate 14, and the output end of the second cylinder 15 is connected to a base 16. A cutting blade 17 is detachably installed inside the base 16. By opening the output end of the second cylinder 15, the base 16 and the cutting blade 17 are driven to approach the right side wall of the pine wood body 22 to cut the top end of the infection point sample scooped up by the upper shell 1, so that the sample naturally falls along the upper shell 1 into the inner cavity of the lower shell 2 for collection.

[0035] Main references Figures 4 to 6 As shown, the bottom end of the lower housing 2 is rotatably connected to one side of the base plate 18 via a pin. An L-shaped plate 19 is installed on the other side of the base plate 18. An insertion hole 20 is opened on the left side wall of the lower housing 2 in the horizontal direction. A pin 21 is inserted into the L-shaped plate 19, and the end of the pin 21 extends into the inner cavity of the insertion hole 20. Subsequently, by pulling the pin 21 outward until it is removed from the inner cavity of the insertion hole 20, the pin 21 no longer positions the L-shaped plate 19 at the lower housing 2. Rotating the L-shaped plate 19 downward causes the L-shaped plate 19 to drive the base plate 18 to rotate and open at the bottom end of the lower housing 2, thereby enabling the sample to be output and taken out from the inner cavity of the lower housing 2 downward.

[0036] In addition, the main references Figure 4 As shown, limit strips 23 are provided on the front and rear side walls of the frame 4 in the vertical direction. A slider 24 is slidably embedded in the inner cavity of the limit strip 23, and the slider 24 is fixedly installed on the inner side wall of the drive frame 6. When the upper shell 1 and the lower shell 2 move vertically inside the frame 4, the slider 24 can be driven to move along the inner cavity of the limit strip 23, further ensuring that the displacement of the upper shell 1 and the lower shell 2 in the frame 4 will not tip over, thus ensuring the stability of the equipment during sampling.

[0037] In addition, the main references Figure 7 As shown, a controller 25 is installed on the right side wall of the lower housing 2. The controller 25 is electrically connected to the first cylinder 9 and the second cylinder 15 respectively. The lower housing 2 can control the first cylinder 9 and the second cylinder 15 to start and stop.

[0038] It is worth noting that the first cylinder 9 and the second cylinder 15 used in this application are commonly used self-locking cylinders on the market, whose output ends can stay at any position and be locked; the controller 25 is a commonly used controller on the market. In this application, the controller 25 can control the processing of information such as the start and stop of the first cylinder 9 and the second cylinder 15, which is sufficient to meet the usage requirements; the model of the above-mentioned existing components will not be limited or described in detail here.

[0039] The working principle of the pine wilt nematode infection point collection device in this embodiment is as follows:

[0040] When collecting samples from nematode infection points, the handle 12 is manually controlled to place the upper shell 1 against the bottom of the infection point on the pine wood body 22 to be sampled. The lower shell 2 controls the opening of the first cylinder 9, which drives the drive frame 6 to move upward, causing the fixing pin 3 to move upward along the second groove 7 and the first groove 5, so that the upper shell 1 and the lower shell 2 gradually move upward. Since the left side of the top of the upper shell 1 has a blade edge, as the upper shell 1 moves upward, it can scrape up the infection point of the pine wood body 22 from bottom to top. The lower shell 2 controls the opening of the second cylinder 15, and the output end of the second cylinder 15 drives the seat 16 and the cutting blade 17 to approach the right side wall of the pine wood body 22 to cut the top end of the infection point sample scraped up by the upper shell 1, so that the sample naturally falls along the upper shell 1 into the inner cavity of the lower shell 2 for collection.

[0041] Subsequently, by pulling the pin 21 outward until it is disengaged from the inner cavity of the insertion hole 20, the pin 21 no longer positions the L-shaped plate 19 at the lower housing 2. The L-shaped plate 19 is rotated downward to cause the L-shaped plate 19 to drive the bottom plate 18 to rotate and open at the bottom of the lower housing 2, thereby enabling the sample to be output and taken out from the inner cavity of the lower housing 2 downward.

[0042] This invention can extract complete and representative sheet-like tree samples without disrupting the natural distribution of nematodes in the pine wood. It can also comprehensively and accurately analyze the infection status of nematodes in trees, effectively maintaining the integrity and authenticity of the distribution of nematodes within the tree during detection. It eliminates the need for manual pushing of the upper shell 1 for sampling, making it more accurate and convenient to operate compared to manual handheld sampling.

[0043] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A borer infection point collection device comprising a pine wood body (22), characterized in that: Also include the upper shell (1) and the lower shell (2), the upper shell (1) and the lower shell (2) constitute the shell cavity communication, the upper shell (1) cavity width is greater than the lower shell (2) cavity width, and the right side wall of the upper shell (1) and the lower shell (2) is located on the same vertical line, the top left side of the upper shell (1) is provided with an edge with a blade, the front and rear side walls of the lower shell (2) are respectively provided with a fixed pin (3), the right side of the upper shell (1) is provided with a frame (4), the frame (4) is arranged outside the upper shell (1) and the lower shell (2), the front and rear sides of the frame (4) are respectively inclined to form a first slot (5), the fixed pin (3) is slidably embedded in the inner cavity of the first slot (5), and the outer side of the frame (4) is movably provided with a driving frame (6), the front and rear side walls of the driving frame (6) are respectively provided with a second slot (7), and the fixed pin (3) is slidably embedded in the inner cavity of the second slot (7).

2. The device according to claim 1, wherein: The right side wall of the frame (4) is provided with a first mounting plate (8), the first mounting plate (8) is provided with a first cylinder (9), and the output end of the first cylinder (9) is connected with the driving frame (6).

3. The device of claim 1, wherein: A sliding assembly is arranged between the lower shell (2) and the frame (4); The sliding assembly comprises a sleeve seat (10) fixedly installed on the right side wall of the lower shell (2), and a limiting column (11) installed in the frame (4), and the sleeve seat (10) is slidably sleeved on the limiting column (11).

4. The device of claim 1, wherein: A handle (12) is installed on the right side wall of the lower shell (2).

5. The device of claim 2, wherein: A mounting frame (13) is installed on the top end of the frame (4), a second mounting plate (14) is installed on the right side wall of the mounting frame (13), a second cylinder (15) is installed on the second mounting plate (14), an output end of the second cylinder (15) is connected with a seat body (16), and a cutting knife (17) is detachably installed in the seat body (16).

6. The device of claim 1, wherein: One side of the bottom plate (18) is rotatably connected to the bottom end of the lower shell (2), an L-shaped plate (19) is installed on the other side of the bottom plate (18), an insertion hole (20) is formed in the left side wall of the lower shell (2) along the horizontal direction, a latch (21) is inserted on the L-shaped plate (19), and the end of the latch (21) can be inserted into the inner cavity of the insertion hole (20).

7. The device of claim 1, wherein: Limiting strips (23) are formed in the front and rear side walls of the frame (4) along the vertical direction, sliding blocks (24) are slidably embedded in the inner cavities of the limiting strips (23), and the sliding blocks (24) are fixedly installed on the inner side wall of the driving frame (6).

8. The device of claim 5, wherein: A controller (25) is installed on the right side wall of the lower shell (2), and the controller (25) is electrically connected with the first cylinder (9) and the second cylinder (15).

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