Agricultural pest and disease sampling device

Abstract

The utility model discloses an agricultural plant disease and insect pest sampling device which comprises a fixing ring, a sampling device is installed on one side of the fixing ring, a telescopic device is connected to one side of the fixing ring and comprises a telescopic rod, a grip, a fixing sleeve, a push sleeve, a control block, a control sleeve, a control groove, a release block, a release plate and a release groove, and the control block is connected to one side of the release block. The control sleeve is arranged on the inner side of the fixing sleeve, the multiple control grooves are formed in one side of the control sleeve, the multiple release blocks are installed on the inner side of the fixing sleeve, the multiple release grooves are formed in the inner side of the fixing sleeve, and the limiting mechanism is installed on the outer side of the fixing sleeve and comprises a matching plate, an arc-shaped groove, a round hole, a matching rod and a connecting rod. The utility model not only solves the problem that the traditional equipment cannot catch living bodies, but also remarkably improves the applicability and the structural stability of the equipment through a flexible adjusting system and a reliable locking mechanism, and has important significance for improving the research efficiency of agricultural diseases and insect pests and promoting the formulation of a prevention and control scheme.

Description

Technical Field

[0001] This utility model relates to the field of agricultural pest and disease sampling technology, and more specifically, to an agricultural pest and disease sampling device. Background Technology

[0002] In the field of agricultural pest and disease control, the ability to capture live pests and diseases, the flexibility of sampling, and the stability of the structure are key factors affecting the research results. However, the agricultural pest and disease sampling devices currently on the market still have many technical defects in practical applications. These problems not only affect the accuracy of the research, but may also reduce work efficiency and practical value.

[0003] The primary problem is the significant inadequacy of live pest and disease capture. Existing sampling devices have significant flaws in their capture methods: First, most devices use electric grids to kill pests and diseases on the spot; second, dead samples cannot reveal the activity characteristics and survival habits of pests and diseases; third, the lack of live samples not only limits the possibility of in-depth research but also affects the targeted development of control programs. This deficiency in capture methods not only reduces the comprehensiveness of research but may also lead to unsatisfactory control effects, failing to meet the research needs of modern agricultural pest and disease control.

[0004] More notably, there is a significant deficiency in sampling flexibility. Existing sampling devices have significant problems in adaptability: First, the handle length of the insect net is fixed and lacks an adjustment mechanism; second, the fixed length design makes it difficult to adapt to crop environments at different heights; third, the limitation of the sampling range not only increases the workload of operators but also reduces sampling efficiency. This design deficiency not only affects the practicality of the equipment but also increases the difficulty of sampling and reduces work efficiency.

[0005] Most critically, the structural stability is severely lacking. Although some devices have achieved adjustable handle length by adding adjustment devices, this design still has obvious defects: First, the adjustment structure is too simple and lacks a reliable fixing mechanism; second, parts are prone to loosening or displacement during use; third, the structural instability not only affects the sampling accuracy, but this structural design deficiency not only affects the service life of the equipment, but may also cause sampling failure and reduce work efficiency. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] In view of the problems existing in the prior art, this utility model provides an agricultural pest and disease sampling device to solve the technical problems mentioned in the background art.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, this utility model provides the following technical solution: an agricultural pest and disease sampling device, comprising a fixed ring, a sampling device installed on one side of the fixed ring, and a telescopic device connected to one side of the fixed ring. The telescopic device includes a telescopic rod, a handle, a fixed sleeve, a push sleeve, a control block, a control sleeve, a control groove, a release block, a release plate, and a release groove. The telescopic rod is fixedly connected to one side of the fixed ring, the handle is slidably sleeved on the outside of the telescopic rod, the fixed sleeve is fixedly installed at one end of the handle, the push sleeve is slidably sleeved on the outside of the fixed sleeve, and the control block is fixedly connected to one side of the release block, and the control block is slidably positioned in the control groove. The control sleeve is slidably disposed inside the fixed sleeve. Multiple control slots are formed on one side of the control sleeve. Multiple release blocks are movably installed inside the fixed sleeve. The release plate is fixedly connected to one side of the release block. The release plate is slidably disposed in the release slot. Multiple release slots are formed inside the fixed sleeve. A limiting mechanism is installed on the outside of the fixed sleeve. The limiting mechanism includes a mating plate, an arc-shaped groove, a round hole, a mating rod, and a connecting rod. The mating plate is rotatably installed on the outside of the fixed sleeve. Multiple arc-shaped grooves are formed on the mating plate. The round hole is formed at one end of the arc-shaped groove. The mating rod is fixedly connected to one end of the connecting rod. Multiple connecting rods are fixedly installed on one side of the push sleeve.

[0010] The present invention is further configured such that the sampling device includes an elastic sheet and a net, wherein a plurality of the elastic sheets are movably installed inside the fixed ring, and the net is detachably installed on one side of the fixed ring.

[0011] The present invention is further configured such that a plurality of springs are connected to the inner side of the fixing ring, and the other end of the springs is connected to one side of the elastic sheet.

[0012] The present invention is further configured such that a sliding groove is provided on the outer side of the telescopic rod, and a sliding rail is fixedly provided on the inner side of the handle, and the sliding groove is adapted to the sliding rail.

[0013] The present invention is further configured such that both the release groove and the release plate are inclined structural designs.

[0014] The present invention is further configured such that a linkage groove is provided on the side wall of the fixed sleeve, and a linkage block is slidably provided in the linkage groove. The inner wall of the push sleeve is fixedly connected to the outer wall of the control sleeve through the linkage block. The linkage block and the linkage groove ensure the synchronous movement of the control sleeve and the push sleeve.

[0015] The present invention is further configured such that a plurality of adapter springs are connected to one side of the release block, and an adapter plate is connected to the other end of the adapter springs. The cooperation between the adapter springs and the adapter plate further ensures the structural stability and ensures stable clamping of the telescopic rod.

[0016] The present invention is further configured such that a movable spring is connected to one side of the push sleeve, and a thrust bearing is detachably provided on one side of the mating plate. The other end of the movable spring is connected to the thrust bearing. The movable spring ensures the stable reset of the push sleeve, and the thrust bearing eliminates the frictional force between one end of the movable spring and the mating plate, ensuring that the mating plate can rotate without affecting the normal use of the movable spring.

[0017] (III) Beneficial Effects

[0018] Compared with the prior art, this utility model provides an agricultural pest and disease sampling device, which has the following beneficial effects:

[0019] 1. The sampling device constructs a highly efficient live animal capture system through the reasonable combination of a fixed ring, an elastic sheet, and a net. The movable connection between the fixed ring and the elastic sheet provides basic support for the overall structure. The cooperation between the spring and the elastic sheet realizes the automatic opening and closing function. The detachable design of the net not only facilitates the sampling operation, but also ensures the reliability of capture through the automatic reset of the elastic sheet. This flexible capture mechanism not only avoids the damage to pests and diseases caused by traditional electric net trapping methods, but also realizes live animal sampling through the flexible assembly and disassembly of the net, effectively solving the problem that traditional equipment cannot capture live animals.

[0020] 2. The telescopic device, through the precise cooperation of components such as the telescopic rod, handle, and fixing sleeve, constructs a flexible length adjustment system. The sliding connection between the telescopic rod and the handle provides basic support for adjustment. The fixing sleeve ensures the accuracy of adjustment through the sliding cooperation between the push sleeve and the control sleeve. The release block and release plate achieve smooth unlocking through the inclined structure design. The cooperation between the control block and the control groove not only realizes the precise movement of the release block, but also ensures the stability of the position through the clamping mechanism of the adapter spring and the adapter plate, effectively solving the problem of fixed extension length of the handle in traditional equipment.

[0021] 3. The limiting mechanism, through the ingenious cooperation of multiple components such as the mating plate, arc groove, and connecting rod, constructs a reliable locking system. The rotational connection between the mating plate and the fixed sleeve provides the motion basis for the overall structure. The cooperation design of components such as the round hole and the mating rod ensures the reliability of the locked state. The unique structural design and linkage mechanism ensure the reliability of the locking operation. This locking mechanism not only effectively prevents the structure from loosening due to equipment swing, but also prevents the telescopic rod and the fixed ring from rotating through the cooperation of the slide rail and the slide groove, solving the problem of loose connection that is common in traditional equipment. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of an agricultural pest and disease sampling device according to the present invention;

[0023] Figure 2This is a cross-sectional structural diagram of the net and fixing ring parts in this utility model;

[0024] Figure 3 This is a cross-sectional view of the handle and telescopic rod parts in this utility model;

[0025] Figure 4 This is a schematic diagram of the structure of the fixing sleeve and the grip in this utility model;

[0026] Figure 5 This is a cross-sectional view of the fixing sleeve and the grip portion in this utility model;

[0027] Figure 6 This is a cross-sectional view of the fixed sleeve and grip portion of the present invention with the release block removed.

[0028] In the diagram: 1. Fixed ring; 2. Telescopic rod; 3. Handle; 4. Fixed sleeve; 5. Push sleeve; 6. Control block; 7. Control sleeve; 8. Control groove; 9. Release block; 10. Release plate; 11. Release groove; 12. Mating plate; 13. Arc groove; 14. Round hole; 15. Mating rod; 16. Connecting rod; 17. Elastic sheet; 18. Net; 19. Spring; 20. Slide groove; 21. Slide rail; 22. Linkage groove; 23. Linkage block; 24. Adaptor spring; 25. Adaptor plate; 26. Movable spring; 40. Thrust bearing. Detailed Implementation

[0029] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0030] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0031] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0032] Please see Figures 1-6An agricultural pest and disease sampling device includes a fixed ring 1, a sampling device installed on one side of the fixed ring 1, and a telescopic device connected to one side of the fixed ring 1. The telescopic device includes a telescopic rod 2, a handle 3, a fixed sleeve 4, a push sleeve 5, a control block 6, a control sleeve 7, a control groove 8, a release block 9, a release plate 10, and a release groove 11. The telescopic rod 2 is fixedly connected to one side of the fixed ring 1. The handle 3 is slidably sleeved on the outside of the telescopic rod 2. The fixed sleeve 4 is fixedly installed at one end of the handle 3. The push sleeve 5 is slidably disposed on the outside of the fixed sleeve 4. The control block 6 is fixedly connected to one side of the release block 9 and is slidably disposed in the control groove 8. The control sleeve 7 is slidably disposed on the inside of the fixed sleeve 4. Multiple A control groove 8 is formed on one side of the control sleeve 7. Multiple release blocks 9 are movably installed inside the fixed sleeve 4. A release plate 10 is fixedly connected to one side of the release block 9. The release plate 10 is slidably disposed in the release groove 11. Multiple release grooves 11 are formed inside the fixed sleeve 4. A limiting mechanism is installed on the outside of the fixed sleeve 4. The limiting mechanism includes a mating plate 12, an arc groove 13, a round hole 14, a mating rod 15, and a connecting rod 16. The mating plate 12 is rotatably installed on the outside of the fixed sleeve 4. Multiple arc grooves 13 are formed on the mating plate 12. A round hole 14 is formed at one end of the arc groove 13. The mating rod 15 is fixedly connected to one end of the connecting rod 16. Multiple connecting rods 16 are fixedly installed on one side of the push sleeve 5.

[0033] The sampling device includes elastic sheets 17 and net bags 18. Multiple elastic sheets 17 are movably installed inside the fixing ring 1, and the net bags 18 are detachably installed on one side of the fixing ring 1.

[0034] Multiple springs 19 are connected to the inner side of the fixing ring 1, and the other end of the spring 19 is connected to one side of the elastic sheet 17.

[0035] In this embodiment, when the device is needed to capture and sample pests, first adjust the extension length of the telescopic rod 2 and the handle 3, then hold the handle 3 and swing the entire device. The handle 3 then drives the fixed ring 1 and the net 18 to swing through the telescopic rod 2. Due to inertia, the elastic plate will open inward to the fixed ring 1, making the fixed ring 1 an open structure. The elastic plate will compress the multiple springs 19 set inside the fixed ring 1. Then the net 18 will capture the pests flying in the air to the inside. When the swinging stops, the multiple springs 19 will reset, causing the springs 19 to push the elastic plate 17 to reset, thereby closing the opening of the fixed ring 1 again, thus capturing and sampling the pests. Then the net 18 is removed from one side of the fixed ring 1. During the removal process, the net 18 is held to confine the pests inside to the end of the net 18, preventing the pests from escaping, thus realizing live sampling of pests.

[0036] Please see Figures 1-6 As a further implementation of the overall equipment: a groove 20 is provided on the outer side of the telescopic rod 2, and a slide rail 21 is fixedly provided on the inner side of the handle 3, and the groove 20 is adapted to the slide rail 21.

[0037] Both the release groove 11 and the release plate 10 are designed with an inclined structure.

[0038] The side wall of the fixed sleeve 4 is provided with a linkage groove 22, and a linkage block 23 is slidably provided in the linkage groove 22. The inner wall of the push sleeve 5 is fixedly connected to the outer wall of the control sleeve 7 through the linkage block 23.

[0039] Multiple adapter springs 24 are connected to one side of the release block 9, and an adapter plate 25 is connected to the other end of the adapter spring 24.

[0040] A movable spring 26 is connected to one side of the push sleeve 5, and a thrust bearing 40 is detachably provided on one side of the mating plate 12. The other end of the movable spring 26 is connected to the thrust bearing 40.

[0041] More specifically, when it is necessary to capture and sample pests at different heights, the extension length of the handle 3 needs to be adjusted. First, rotate the mating plate 12 in the forward direction, causing the mating plate 12 to drive the thrust bearing 40 set on one side to rotate. The setting of the thrust bearing 40 can effectively eliminate the friction between the mating plate 12 and the movable spring 26 when they rotate, so that the mating plate 12 drives the arc groove 13 and the round hole 14 to rotate. When the round hole 14 rotates to a position concentric with the mating rod 15 and the connecting rod 16, it pushes the push sleeve 5, so that the push sleeve 5 drives the mating rod 15 to gradually slide into the round hole 14 through the connecting rod 16. The push sleeve 5 will cooperate with the thrust bearing 40 set on one side of the mating plate 12 to squeeze the movable spring 26. When the movable spring 26 is squeezed to the limit, The mating rod 15 passes completely through the circular hole 14 and moves to the other side of the mating plate 12. Simultaneously, the push sleeve 5, through the linkage block 23 on the inner wall, drives the control sleeve 7 to slide along the linkage groove 22. Then, the control sleeve 7, through the control groove 8, drives the control block 6 and the release block 9 to slide forward. The release block 9 then drives the release plate 10, located on one side, to slide along the release groove 11. Due to the inclined structure design of the release plate 10 and the release groove 11, the release plate 10, while sliding along the release groove 11, drives the release block 9 to move outward. The release block 9 also drives the control block 6 to slide along the control groove 8. Simultaneously, the movement of the release block 9 causes the adapter spring 24 to gradually reset. After fully resetting, the adapter spring 24 drives the adapter plate 25 to move outward, causing the adapter plate 25 to... 5. The outer wall of the telescopic rod 2 is no longer clamped. Then, the mating plate 12 is rotated in the reverse direction, causing the mating plate 12 to drive the arc groove 13 and the round hole 14 to rotate. Then, the connecting rod 16 will enter the arc groove 13. The connecting rod 16 and the mating plate 12 work together to stably limit the push sleeve 5 to one side of the mating plate 12. Then, the handle 3 is slid, causing the handle 3 to drive the slide rail 21 to slide along the slide groove 20, thereby adjusting the extension length of the telescopic rod 2 from the handle 3, that is, adjusting the extension length of the handle 3, achieving the purpose of adjusting the distance between the handle 3 and the fixed ring 1. After the adjustment is appropriate, the sliding handle 3 is stopped. Then, the mating plate 12 is rotated in the forward direction again, causing the mating plate 12 to drive the thrust bearing 40 to rotate again, and causing the mating plate 12 to drive the arc groove 13 and the round hole 14 to rotate again. 4. The circular hole 14 rotates forward until it is concentric with the connecting rod 16 and the mating rod 15. The movable spring 26 pushes the push sleeve 5 to slide back to its original position. Then, the push sleeve 5 drives the connecting rod 16 and the mating rod 15 to slide back to their original position. Simultaneously, the push sleeve 5 drives the linkage block 23 to slide back to its original position along the linkage groove 22, and through the linkage block 23, drives the control sleeve 7 to slide back to its original position. Then, the control sleeve 7 pushes the release block 9 to move in the opposite direction. Then, the release block 9 drives the release plate 10 to slide back to its original position along the release groove 11. Then, the release plate 10 drives the release block 9 to move inward, causing the release block 9 to drive the control block 6 to slide back to its original position along the control groove 8. Then, the release block 9 drives the adapter spring 24 and the adapter plate 25 to move back to their original positions. Then, the inner wall of the adapter plate 25 contacts the outer wall of the telescopic rod 2 again.Then, the release block 9 and the adapter plate 25 work together to compress the adapter spring 24. Once the adapter spring 24 is fully compressed, the release block 9, through the adapter spring 24 and the adapter rod, firmly clamps the telescopic rod 2. At this point, the movable spring 26 fully resets. Then, the mating plate 12 continues to rotate, causing it to drive the thrust bearing 40 to rotate. This causes the mating plate 12 to drive the arc groove 13 and the round hole 14 to rotate to positions not corresponding to the mating rod 15 and the connecting rod 16. This allows the connecting rod 16 and the mating rod 15 to stably support the push sleeve 5 on one side of the mating plate 12, achieving stable clamping of the telescopic rod 2. Combined with the limiting action of the slide rail 21 and the slider, the fixation is further stabilized, preventing relative movement between the telescopic rod 2 and the fixed sleeve 4, thus ensuring structural stability and the stable operation of the equipment.

[0042] In summary, when using or operating the entire device: First, adjust the extension length of the telescopic rod 2 and handle 3. Then, grasp the handle 3 and swing the device. The handle 3, through the telescopic rod 2, drives the fixed ring 1 and net 18 to swing. Due to inertia, the elastic plate opens inwards towards the fixed ring 1, making it an open structure. The elastic plate compresses the multiple springs 19 inside the fixed ring 1, causing the net 18 to capture the flying insects. When the swinging stops, the multiple springs 19 return to their original positions, pushing the elastic plate 17 back to its original position. This closes the opening of the fixed ring 1 again, allowing for the capture and sampling of insects. Then, remove the net 18 from one side of the fixed ring 1. During removal, hold the net 18 to confine the insects inside to the end of the net 18, preventing escape and thus achieving live sampling of insects.

[0043] When it is necessary to capture and sample pests at different heights, the extension length of the handle 3 needs to be adjusted. First, rotate the mating plate 12 in the forward direction, so that the mating plate 12 drives the thrust bearing 40 set on one side to rotate. The setting of the thrust bearing 40 can effectively eliminate the friction between the mating plate 12 and the movable spring 26 when it rotates, so that the mating plate 12 drives the arc groove 13 and the round hole 14 to rotate. When the round hole 14 rotates to the position concentric with the mating rod 15 and the connecting rod 16, it pushes the push sleeve 5, so that the push sleeve 5 drives the mating rod 15 to gradually slide into the round hole 14 through the connecting rod 16. The push sleeve 5 will cooperate with the thrust bearing 40 set on one side of the mating plate 12 to squeeze the movable spring 26. When the movable spring 26 is squeezed to the limit, the mating rod 15 is just completely inserted. The push sleeve 5 moves through the circular hole 14 and to the other side of the mating plate 12. Simultaneously, the push sleeve 5, through the linkage block 23 on the inner wall, drives the control sleeve 7 to slide along the linkage groove 22. Then, the control sleeve 7, through the control groove 8, drives the control block 6 and the release block 9 to slide forward. The release block 9 then drives the release plate 10, located on one side, to slide along the release groove 11. Due to the inclined structure design of the release plate 10 and the release groove 11, the release plate 10, while sliding along the release groove 11, drives the release block 9 to move outward. The release block 9 also drives the control block 6 to slide along the control groove 8. Simultaneously, the movement of the release block 9 causes the adapter spring 24 to gradually reset. After the adapter spring 24 has fully reset, it drives the adapter plate 25 to move outward, so that the adapter plate 25 no longer clamps the outer wall of the telescopic rod 2. Reverse rotation of the mating plate 12 causes the mating plate 12 to drive the arc groove 13 and the round hole 14 to rotate. Then, the connecting rod 16 will enter the arc groove 13. The connecting rod 16 and the mating plate 12 then work together to stably limit the push sleeve 5 to one side of the mating plate 12. Then, slide the handle 3, causing the handle 3 to drive the slide rail 21 to slide along the slide groove 20, thereby adjusting the extension length of the telescopic rod 2 from the handle 3, that is, adjusting the extension length of the handle 3, achieving the purpose of adjusting the distance between the handle 3 and the fixed ring 1. After the adjustment is appropriate, stop sliding the handle 3, and then rotate the mating plate 12 forward again, causing the mating plate 12 to drive the thrust bearing 40 to rotate again, and causing the mating plate 12 to drive the arc groove 13 and the round hole 14 to rotate forward again. When the round hole 14 rotates again to the position of the connecting rod 16, the extension length of the push sleeve 5 will be adjusted. When rod 16 and mating rod 15 are concentric, the movable spring 26 pushes the push sleeve 5 to slide back to its original position. Then, the push sleeve 5 drives the connecting rod 16 and mating rod 15 to slide back to their original positions. At the same time, the push sleeve 5 drives the linkage block 23 to slide back to its original position along the linkage groove 22, and through the linkage block 23, drives the control sleeve 7 to slide back to its original position. Then, the control sleeve 7 pushes the release block 9 to move in the opposite direction. Then, the release block 9 drives the release plate 10 to slide back to its original position along the release groove 11. Then, the release plate 10 drives the release block 9 to move inward, so that the release block 9 drives the control block 6 to slide back to its original position along the control groove 8. Then, the release block 9 drives the adapter spring 24 and adapter plate 25 to move back to their original positions. Then, the inner wall of the adapter plate 25 contacts the outer wall of the telescopic rod 2 again. Then, the release block 9 and the adapter plate 25 cooperate to compress the adapter spring 24.Once the adapter spring 24 is fully compressed, the release block 9 securely clamps the telescopic rod 2 via the adapter spring 24 and the adapter rod. At this point, the movable spring 26 fully resets. Then, the mating plate 12 continues to rotate, causing it to drive the thrust bearing 40 to rotate. This, in turn, causes the mating plate 12 to rotate the arc groove 13 and the round hole 14 to positions that do not correspond to the mating rod 15 and the connecting rod 16. Consequently, the connecting rod 16 and the mating rod 15 work together to stably support the push sleeve 5 on one side of the mating plate 12, achieving stable clamping of the telescopic rod 2. Combined with the limiting action of the slide rail 21 and the slider, this further stabilizes the fixation, preventing relative movement between the telescopic rod 2 and the fixed sleeve 4. This ensures structural stability and the stable operation of the equipment.

[0044] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. An agricultural pest and disease sampling device, comprising a fixing ring (1), characterized in that: A sampling device is installed on one side of the fixed ring (1), and a telescopic device is connected to one side of the fixed ring (1). The telescopic device includes a telescopic rod (2), a handle (3), a fixed sleeve (4), a push sleeve (5), a control block (6), a control sleeve (7), a control groove (8), a release block (9), a release plate (10), and a release groove (11). The handle (3) is sleeved on the outside of the telescopic rod (2), the push sleeve (5) is located on the outside of the fixed sleeve (4), the control block (6) is connected to one side of the release block (9), the control sleeve (7) is located inside the fixed sleeve (4), multiple control grooves (8) are opened on one side of the control sleeve (7), and multiple release blocks (9) are installed. Inside the fixed sleeve (4), the release plate (10) is fixedly connected to one side of the release block (9). Multiple release grooves (11) are opened inside the fixed sleeve (4). A limiting mechanism is installed on the outside of the fixed sleeve (4). The limiting mechanism includes a mating plate (12), an arc groove (13), a round hole (14), a mating rod (15), and a connecting rod (16). The mating plate (12) is installed on the outside of the fixed sleeve (4). Multiple arc grooves (13) are opened on the mating plate (12). The round hole (14) is opened at one end of the arc groove (13). The mating rod (15) is connected to one end of the connecting rod (16). Multiple connecting rods (16) are installed on one side of the push sleeve (5).

2. The agricultural pest and disease sampling device according to claim 1, characterized in that: The sampling device includes an elastic sheet (17) and a net (18). A plurality of the elastic sheets (17) are movably installed inside the fixing ring (1), and the net (18) is detachably installed on one side of the fixing ring (1).

3. The agricultural pest and disease sampling device according to claim 2, characterized in that: Multiple springs (19) are connected to the inner side of the fixing ring (1), and the other end of the spring (19) is connected to one side of the elastic sheet (17).

4. An agricultural pest and disease sampling device according to any one of claims 1-3, characterized in that: The telescopic rod (2) has a groove (20) on its outer side, and the handle (3) has a slide rail (21) fixed on its inner side, and the groove (20) is adapted to the slide rail (21).

5. The agricultural pest and disease sampling device according to claim 4, characterized in that: Both the release groove (11) and the release plate (10) are designed with an inclined structure.

6. The agricultural pest and disease sampling device according to claim 5, characterized in that: The side wall of the fixed sleeve (4) is provided with a linkage groove (22), and a linkage block (23) is slidably provided in the linkage groove (22). The inner wall of the push sleeve (5) is fixedly connected to the outer wall of the control sleeve (7) through the linkage block (23).

7. The agricultural pest and disease sampling device according to claim 6, characterized in that: The release block (9) is provided with a plurality of adapter springs (24) on one side, and an adapter plate (25) is provided at the other end of the adapter springs (24).

8. The agricultural pest and disease sampling device according to claim 1, characterized in that: A movable spring (26) is connected to one side of the push sleeve (5), and a thrust bearing (40) is detachably provided on one side of the mating plate (12). The other end of the movable spring (26) is connected to the thrust bearing (40).

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