Overall observation device for Solenopsis invicta nest structure and individual distribution pattern
Through the combination of liquid nitrogen freezing technology and mechanical cutting and digging, the problem of incomplete nest structure data in red fire ant nest observation is solved, and the three-dimensional structure observation and efficient data acquisition of red fire ant nest is realized.
Patent Information
- Application Number
- CN202510774925.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-11
- Publication Date
- 2025-08-15
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
In the prior art, it is difficult for micro cameras to penetrate deep into the core area of the red fire ant nest, resulting in the inability to obtain complete nest structure data.
The nest structure is fixed using liquid nitrogen refrigeration technology, combining cutting and excavation components, and the cutting assembly is driven by the liquid nitrogen tank pressure to perform precise cutting, and the nest sample is completely obtained through the excavation assembly.
The three-dimensional structure observation of the red fire ant nest is realized, complete nest data is obtained, the device structure is simplified, the cost is reduced, and the portability and observation efficiency are improved.
Smart Images
Figure CN120477183A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of observation of red imported fire ants' nests, and in particular to a device for overall observation of the nest structure and individual distribution pattern of red imported fire ants. Background Art
[0002] The red imported fire ant (RIFA) is a highly destructive invasive species with complex nest structures. The distribution patterns of individual ants are closely linked to their population spread and ecological impact. In-depth research into the nest structure and distribution patterns of RIFA is crucial for understanding their ecological habits and developing effective prevention and control strategies. Currently, RIFA nest observation devices typically use miniature cameras to penetrate deep into nests to capture the nest structure. For example, the MS20 series miniature cameras produced by Shenzhen Weishi Imaging Technology Co., Ltd., placed in front of an observation probe designed to penetrate deep into nests, can capture details of the nest's internal structure and the activities of individual ants.
[0003] However, when the MS20 series miniature camera observes the red fire ant nest, the camera probe has difficulty penetrating into the core area of the nest due to the narrow and winding passages inside the nest, resulting in the inability to obtain complete nest structure data, especially the layout of the main ant chamber and deep ant tunnels.
[0004] To sum up, how to solve the problem of using a miniature camera to observe the red fire ant nest, because the internal passages of the nest are narrow and winding, and the camera probe is difficult to penetrate into the core area of the nest, resulting in the inability to obtain complete nest structure data has become a difficult problem that needs to be solved urgently in this field. Therefore, it is necessary to propose a comprehensive observation device for the red fire ant nest structure and individual distribution pattern. Summary of the Invention
[0005] In order to solve the above problems, the present invention provides an overall observation device for the nest structure and individual distribution pattern of red imported fire ants, which is used to quickly solidify the ant nest through liquid nitrogen freezing technology, cooperate with the auxiliary fixing component stabilization device, use the cutting component and the rotating component to accurately cut the frozen ant nest, and obtain the nest sample completely through the digging component, so as to comprehensively and accurately obtain the three-dimensional structure of the red imported fire ant nest.
[0006] In order to achieve the above-mentioned purpose, the technical solution of the present invention is as follows: a device for observing the overall structure of a red imported fire ant nest and the individual distribution pattern, comprising a liquid nitrogen tank, a connecting pipe and a steel cover for freezing the ant nest, the steel cover being hemispherical, the liquid nitrogen tank and the steel cover being connected by a connecting pipe, an auxiliary fixing assembly being provided at the bottom of the steel cover for fixing the steel cover when the ant nest is frozen; a cutting assembly for cutting the frozen ant nest and a rotating assembly for rotating the cutting assembly are provided on the inner side wall of the steel cover; a driving assembly is provided on the cutting assembly for utilizing the pressure of the liquid nitrogen tank to provide power to the cutting assembly and the fixing assembly; the cutting assembly is also provided with a digging assembly for digging out the cut ant nest.
[0007] The technical principles of the above solution are as follows:
[0008] Utilizing the ultra-low temperature of liquid nitrogen in a tank, the liquid nitrogen is transported via connecting pipes into a hemispherical steel enclosure to rapidly freeze the red imported fire ant nest. Due to the extremely low temperature of liquid nitrogen (approximately -196°C), it quickly freezes the soil, ant bodies, and other materials within the nest. This not only incapacitates the ants, preventing interference with observation operations, but also stabilizes the nest structure, preventing collapse or deformation during subsequent operations.
[0009] The auxiliary fixing components on the edge of the steel cover, when liquid nitrogen is injected into the steel cover, the pressure inside the steel cover changes, prompting the fixing components to be tightly fixed to the ground, ensuring that the steel cover is stable during the observation process and preventing liquid nitrogen leakage and external interference.
[0010] After freezing, the drive assembly uses the pressure from the liquid nitrogen tank to drive the cutting assembly to rotate and cut the frozen ant nest. During the cutting process, the embrittlement of the frozen ant nest material is utilized to reduce the cutting difficulty and ensure cutting accuracy.
[0011] After cutting is complete, the excavation component begins to work, excavating the cut nest sections. This ultimately enables a comprehensive observation of the red fire ant nest structure and individual distribution patterns, acquiring complete and accurate nest data.
[0012] The above scheme has the following beneficial effects:
[0013] 1. The present invention combines liquid nitrogen freezing technology with mechanical cutting and digging, breaking through the limitation of traditional micro-camera observation that can only obtain local two-dimensional images. It can completely preserve the three-dimensional structure of the red fire ant nest, especially the layout characteristics of key areas such as the main ant room and deep ant tunnels, as well as the distribution status of red fire ants in different hierarchical structures. It provides authentic and reliable first-hand data for in-depth research on the ecological habits of red fire ants.
[0014] 2. The present invention cleverly utilizes the pressure of the liquid nitrogen tank itself as a driving source, eliminating the need for additional power equipment, simplifying the device structure, reducing equipment costs and maintenance difficulties, while avoiding the safety hazards and operational inconveniences caused by external power supplies in complex environments, and improving the portability and adaptability of the device to field operations.
[0015] 3. This invention integrates freezing, cutting, and excavation functions, rapidly completing the entire process from sample fixation to complete collection without damaging the original nest structure, significantly improving observation efficiency. Compared to traditional excavation or plaster casting methods, this device is simpler to operate, takes less time, and causes less environmental disturbance.
[0016] Furthermore, the fixing assembly includes several piston holes circumferentially opened at the bottom of the steel cover, and piston rods are vertically slidably fitted in the piston holes. Sliders are symmetrically and fixedly connected to the side walls of the piston rods. Bevel grooves are opened on the inner side walls of the piston holes, and the slides are slidably fitted with the bevel grooves.
[0017] The bottom end of the piston column is fixedly connected to a threaded column, and a spring is sleeved on the outside of the piston column. One end of the spring is fixedly connected to the bottom of the steel cover, and the other end of the spring is fixedly connected to the top of the adjacent threaded column; the piston holes are connected to the steel cover.
[0018] Beneficial effect: When liquid nitrogen is injected into the steel cover to change the internal pressure, the piston column slides in the piston hole, and the slider moves along the inclined groove, driving the threaded column to screw into the ground, thereby quickly fixing the steel cover and avoiding loosening of the steel cover due to pressure fluctuations.
[0019] Furthermore, the rotating assembly includes support rods that are symmetrically and fixedly connected to the inner wall of the steel cover, and slide cylinders are provided between the support rods. The slide cylinders and the support rods are vertically slidably matched, and a "Z"-shaped annular slide groove is circumferentially opened on the side wall of the slide cylinder.
[0020] A sleeve is vertically slidably fitted in the slide cylinder, a limiting block is symmetrically fixedly connected to the side wall of the sleeve, and the limiting block and the annular slide groove are both slidably fitted.
[0021] Beneficial Effects: The vertical sliding coordination between the slide and the support rod, as well as the sliding connection between the Z-shaped annular groove on the slide's sidewall and the sleeve's stopper, allows the slide to produce precise rotational motion during vertical movement. This unique structural design enables the cutting assembly to evenly and stably cut frozen anthills along a pre-set trajectory.
[0022] Furthermore, the driving assembly includes a telescopic cylinder fixedly connected to the inner wall of the steel cover, a support column is vertically slidably fitted inside the telescopic cylinder, a tension spring is provided inside the telescopic cylinder, one end of the tension spring is fixedly connected to the top wall inside the telescopic cylinder, and the other end of the tension spring is fixedly connected to the support column; the telescopic cylinder and the steel cover are connected.
[0023] Beneficial effect: The telescopic cylinder is connected to the steel cover, and the pressure of the liquid nitrogen tank is used to push the support column, which converts the liquid nitrogen pressure into mechanical power to provide driving force for the cutting component and the fixing component.
[0024] Furthermore, the cutting assembly includes a cross bar fixedly connected to the bottom of the sleeve, and cutting blades are hinged at both ends of the cross bar.
[0025] Beneficial effect: The cutting blades hinged at both ends of the crossbar, driven by the rotating assembly, can rotate and cut according to the complex contours of the frozen anthill.
[0026] Furthermore, the digging assembly includes a first cylinder symmetrically and fixedly connected to the top of the cross bar, the output shaft of the first cylinder is hinged to one end of the cutting blade adjacent to it, and a second cylinder fixedly connected to the inner wall of the steel cover, the output shaft of the second cylinder is fixedly connected to the side wall of the slide, and the input end of the first cylinder is connected to the output end of the second cylinder.
[0027] Beneficial effect: When the tension spring drives the telescopic cylinder, which in turn drives the slide, and then drives the second cylinder output shaft to compress, the air pressure in the second cylinder can be squeezed into the first cylinder, and the first cylinder output shaft extends at this time. Since the first cylinder output shaft is hinged to one end of the adjacent cutting blade, the blade can be retracted at this time to grab the cut ant hole.
[0028] Furthermore, a thermal insulation layer is fixedly connected to the outer wall of the steel cover.
[0029] Beneficial effects: The insulation layer can effectively reduce the loss of liquid nitrogen cooling capacity, reduce the consumption rate of liquid nitrogen, extend the freezing time, ensure that the ant hole can be fully frozen and solidified, and improve the freezing effect.
[0030] Furthermore, a transparent observation window is provided on the side wall of the steel cover.
[0031] Beneficial effects: The transparent observation window allows operators to observe the freezing state of the ant nest, the cutting process and the digging situation in real time without opening the steel cover and destroying the freezing environment and the nest structure.
[0032] Furthermore, a flow control valve and a pressure sensor are provided on the connecting pipe.
[0033] Beneficial effects: The quantity control valve can accurately adjust the liquid nitrogen flow according to the actual conditions such as the size of the ant nest and the texture of the soil, so that the ant nest can achieve the ideal freezing effect within the appropriate time, avoiding liquid nitrogen waste or insufficient freezing.
[0034] Furthermore, a flexible sealing gasket is fixedly connected to the bottom edge of the steel cover, and the flexible sealing gasket is made of low-temperature resistant rubber.
[0035] Beneficial effects: The flexible sealing gasket made of low-temperature resistant rubber has good flexibility and sealing performance, can fit closely to the ground, fill the gap between the steel cover and the ground, effectively prevent liquid nitrogen leakage, and ensure the airtightness of the freezing environment.
[0036] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0037] Figure 1 This is an axonometric diagram of the overall observation device for the red imported fire ant nest structure and individual distribution pattern of the present invention.
[0038] Figure 2 This is a front cross-sectional view of the steel cover in the overall observation device for the red imported fire ant nest structure and individual distribution pattern of the present invention.
[0039] Figure 3 for Figure 2 Enlarged view of part A.
[0040] Figure 4 This is an axonometric diagram of the fixed components in the overall observation device for the red imported fire ant nest structure and individual distribution pattern of the present invention.
[0041] The figure marks in the drawings of the specification include: 1. liquid nitrogen tank; 2. connecting pipe; 3. steel cover; 4. piston hole; 5. piston column; 6. slider; 7. threaded column; 8. spring; 9. cross bar; 10. cutting blade; 11. support rod; 12. slide; 13. sleeve; 14. limit block; 15. telescopic cylinder; 16. support column; 17. tension spring; 18. first cylinder; 19. second cylinder; 20. observation window. DETAILED DESCRIPTION
[0042] The following is further described in detail through specific implementation methods:
[0043] Example 1:
[0044] As attached Figure 1 The figure shows: a device for observing the overall structure and individual distribution pattern of a red imported fire ant nest, comprising a liquid nitrogen tank 1, a connecting pipe 2 and a steel cover 3 for freezing the ant nest. The steel cover 3 is hemispherical, and the liquid nitrogen tank 1 and the steel cover 3 are connected by the connecting pipe 2. An auxiliary fixing assembly for fixing the steel cover 3 when freezing the ant nest is provided at the bottom of the steel cover 3; a cutting assembly for cutting the frozen ant nest and a rotating assembly for rotating the cutting assembly are provided on the inner side wall of the steel cover 3; a driving assembly for utilizing the pressure of the liquid nitrogen tank 1 to provide power to the cutting assembly and the fixing assembly; and a digging assembly for digging out the cut ant nest is also provided on the cutting assembly.
[0045] As attached Figure 4As shown, specifically, the fixing assembly includes a plurality of piston holes 4 circumferentially opened at the bottom of the steel cover 3, and piston rods 5 are vertically slidably fitted in the piston holes 4. Slide blocks 6 are symmetrically and integrally formed on the side walls of the piston rods 5, and oblique grooves are opened on the inner side walls of the piston holes 4, and the slide blocks 6 are slidably fitted with the oblique grooves.
[0046] The bottom end of the piston column 5 is integrally formed with a threaded column 7, and a spring 8 is sleeved on the outside of the piston column 5. One end of the spring 8 is fixedly connected to the bottom of the steel cover 3 by a screw, and the other end of the spring 8 is fixedly connected to the top of the adjacent threaded column 7 by a screw; the piston hole 4 is connected to the steel cover 3.
[0047] Buckle the steel cover 3 on the anthill of the red imported fire ants, turn on the switch of the liquid nitrogen tank 1, and transport liquid nitrogen into the steel cover 3. At this time, the pressure in the steel cover 3 increases. Since the piston holes 4 are connected to the steel cover 3, the liquid nitrogen in the steel cover 3 is squeezed into the piston hole 4. At this time, the pressure in the piston hole 4 increases. Since the piston holes 4 are vertically slidably fitted with piston rods 5, the piston rods 5 are pushed out of the piston hole 4 by the increased pressure and penetrate into the soil around the anthill. Since the side walls of the piston rods 5 are symmetrically integrally formed with sliders 6, and the inner side walls of the piston holes 4 are provided with oblique grooves, during the process of the piston rods 5 being pushed out, the sliders 6 slide in the oblique grooves to drive the piston rods 5 in Figure 4 The spring 8 rotates counterclockwise, causing the threaded stud 7 at the bottom of the piston rod 5 to be rotated and penetrated into the soil. At this time, the spring 8 is stretched and deformed. The threaded stud 7 penetrated into the soil increases the stability and sealing of the steel cover 3, while preventing the high pressure inside the steel cover 3 from being flushed out. When the liquid nitrogen tank 1 is injected with pressure, since one end of the spring 8 is fixedly connected to the bottom of the steel cover 3 by screws, and the other end of the spring 8 is fixedly connected to the top of the adjacent threaded stud 7 by screws, the spring 8 recovers its deformation, driving the piston rod 5 and then the threaded stud 7 to retract.
[0048] As attached Figure 2 and Figure 3 As shown, specifically, the rotating assembly includes support rods 11 that are symmetrical and fixed to the inner wall of the steel cover 3 by screws, and a slide 12 is provided between the support rods 11. The slide 12 and the support rods 11 are vertically slidably matched, and a "Z"-shaped annular groove is opened circumferentially on the side wall of the slide 12.
[0049] A sleeve 13 is vertically slidably fitted in the slide 12 , and a limiting block 14 is symmetrically integrally formed on the side wall of the sleeve 13 , and the limiting block 14 and the annular slide groove are both slidably fitted.
[0050] The driving assembly includes a telescopic cylinder 15 fixedly connected to the inner wall of the steel cover 3 by screws, and a support column 16 is vertically slidably fitted inside the telescopic cylinder 15. The support column 16 is fixedly connected to the top of the slide cylinder 12 with one end away from the telescopic cylinder 15 by screws. A tension spring 17 is provided inside the telescopic cylinder 15, and one end of the tension spring 17 is fixedly connected to the inner top wall of the telescopic cylinder 15 by screws, and the other end of the tension spring 17 is fixedly connected to the support column 16 by screws; the telescopic cylinder 15 is connected to the steel cover 3.
[0051] The cutting assembly includes a cross bar 9 fixedly connected to the bottom of the sleeve 13 by screws, and cutting blades 10 are hinged at both ends of the cross bar 9.
[0052] When the liquid nitrogen tank 1 is flushed into the steel cover 3 with liquid nitrogen, the pressure in the steel cover 3 increases. Since the telescopic cylinder 15 is connected to the steel cover 3, the high pressure in the steel cover 3 can be flushed into the telescopic cylinder 15, causing the support column 16 to extend. The extension of the support column 16 drives the slide 12 to move downward. At this time, the tension spring 17 is stretched and deformed. At this time, the slide 12 drives the sleeve 13 downward, and then drives the cutting blade 10 to move downward and penetrate into the soil around the ant nest. At the same time, in the process of the slide 12 moving downward, due to the symmetrically integrally formed limiting block 14 on the upper side wall of the sleeve 13, the limiting block 14 and the "Z"-shaped annular slide groove slide together. When the cutting blade 10 at the bottom of the sleeve 13 moves downward and contacts the soil, the soil can lift the sleeve 13, causing the sleeve 13 to slide upward in the slide 12, driving the limiting block 14 Figure 3 The upper annular chute slides upward to the uppermost part of the annular chute. At this time, the sleeve 13 can rotate, so that the cutting blade 10 can cut the ant nest in a circular shape. When the support column 16 contracts, it can drive the slide 12 upward to make the cutting blade 10 leave the soil. At this time, the sleeve 13 can slide downward due to the action of gravity, so that the limit block 14 moves to the lowermost part of the annular chute to recover, which is convenient for next use.
[0053] As attached Figure 2 As shown, specifically, the digging assembly includes a first cylinder 18 that is symmetrical and fixedly connected to the top of the cross bar 9 by screws, and a second cylinder 19 that is fixedly connected to the inner wall of the steel cover 3 by screws. The output shaft of the first cylinder 18 is hinged to one end of the cutting blade 10 adjacent to it, and the output shaft of the second cylinder 19 is fixedly connected to the side wall of the slide 12 by screws. The input end of the first cylinder 18 is connected to the output end of the second cylinder 19.
[0054] After the cutting blade 10 cuts the ant hole in a circular shape, the liquid nitrogen in the steel cover 3 is emptied. At this time, the high pressure in the steel cover 3 is lost. Since a tension spring 17 is provided in the telescopic cylinder 15, the tension spring 17 recovers its deformation and can drive the support column 16 to contract and then drive the slide 12 to move upward. Since the output shaft of the second cylinder 19 and the side wall of the slide 12 are fixedly connected by screws, the upward movement of the slide 12 can push the second cylinder 19 output shaft to compress the gas in the second cylinder 19 upward, so that the gas in the second cylinder 19 is pushed into the first cylinder 18. At this time, the gas pressure in the first cylinder 18 increases, thereby pushing the output shaft of the first cylinder 18 to extend. Since the output shaft of the first cylinder 18 is hinged to one end of the cutting blade 10 adjacent to it, the cutting blades 10 at both ends of the cross bar 9 can retract towards each other in the middle, thereby grabbing the frozen ant hole after cutting and picking up the complete ant hole.
[0055] The specific implementation process is as follows:
[0056] Aim the hemispherical steel cover 3 at the red imported fire ant nest and slowly lower it until the bottom edge of the cover 3 is flush with the ground around the nest. Turn on the liquid nitrogen tank 1, and liquid nitrogen rapidly flows into the steel cover 3 through the connecting pipe 2. As the pressure inside the steel cover 3 increases, the piston rod 5 is pushed out of the piston hole 4 under the action of pressure. The slider 6 on its side wall slides along the inclined groove, driving the piston rod 5 to rotate, causing the threaded rod 7 at the bottom to rotate and penetrate into the soil around the ant nest, firmly fixing the steel cover 3 to the ground from different directions, ensuring the stability and sealing of the steel cover 3 and preventing liquid nitrogen leakage.
[0057] Liquid nitrogen is continuously flowed into the steel cover 3, and the ultra-low temperature of liquid nitrogen, approximately -196°C, is used to rapidly freeze and solidify the soil, ant bodies, and other materials in the ant nest. The freezing time is controlled to be about 15 minutes.
[0058] Once the nest is frozen, the high-pressure gas inside the steel cover 3 enters the telescopic cylinder 15 and pushes the support column 16 out. The support column 16 drives the slide 12 downward along the support rod 11. As the sleeve 13 moves downward, it rotates the crossbar 9, driving the cutting blades 10 at each end of the crossbar 9 to perform a circular cut on the frozen nest. During the cutting process, the cutting force and speed of the cutting blades 10 can be indirectly adjusted by controlling the liquid nitrogen flow and pressure, depending on the nest structure and observation requirements, ensuring cutting accuracy and completely isolating the nest portion to be observed.
[0059] After cutting is complete, the liquid nitrogen in the steel cover 3 is evacuated, and the pressure inside the steel cover 3 disappears. At this point, the tension spring 17 within the telescopic cylinder 15 recovers its shape, causing the support column 16 to retract and the slide 12 to move upward. The slide 12 pushes the output shaft of the second cylinder 19, compressing the gas inside and pushing it into the first cylinder 18. The pressure in the first cylinder 18 increases, causing its output shaft to extend, driving the hinged cutting blade 10 to retract toward the center, capturing and securing the frozen anthill.
[0060] The captured ant nest samples were removed from the steel cover and placed on a specialized observation platform. Using 3D modeling equipment, microscopes, and other instruments, detailed observations and data collection were conducted on the ant nest's three-dimensional structure, channel distribution, chamber layout, and individual distribution of red imported fire ants, providing complete and accurate data for the research.
[0061] By combining liquid nitrogen freezing technology with mechanical cutting and excavation, this invention overcomes the limitation of traditional micro-camera observation, which can only obtain local two-dimensional images. It can completely preserve the three-dimensional structure of the red fire ant nest, especially clearly showing the layout characteristics of key areas such as the main ant chamber and deep ant tunnels, as well as the distribution of red fire ants at different levels of the structure, providing authentic and reliable first-hand data for in-depth research on the ecological habits of red fire ants. The invention cleverly utilizes the pressure of the liquid nitrogen tank as the driving source, eliminating the need for additional power equipment, simplifying the device structure, reducing equipment cost and maintenance difficulty, and avoiding the safety hazards and operational inconveniences caused by external power supply in complex environments, thereby improving the device's portability and adaptability to field operations.
[0062] Example 2:
[0063] As attached Figure 1 As shown, the difference from Example 1 is that a thermal insulation layer is fixedly bonded to the outer wall of the steel cover 3.
[0064] The specific implementation process is as follows:
[0065] When the steel cover 3 is placed on the anthill and nitrogen is introduced, the insulation layer can effectively reduce the loss of liquid nitrogen cooling capacity, reduce the consumption rate of liquid nitrogen, extend the freezing time, ensure that the anthill can be fully frozen and solidified, and improve the freezing effect.
[0066] Example 3:
[0067] As attached Figure 1 As shown, the difference from Example 2 is that a transparent observation window 20 is opened on the side wall of the steel cover 3.
[0068] The specific implementation process is as follows:
[0069] The transparent observation window 20 allows the operator to observe the freezing state of the ant nest, the cutting process and the digging situation in real time without opening the steel cover 3 and destroying the freezing environment and the nest structure.
[0070] Example 4:
[0071] As attached Figure 1 As shown, the difference from embodiment 3 is that a flow control valve and a pressure sensor are provided on the connecting pipe 2.
[0072] The specific implementation process is as follows:
[0073] When nitrogen is introduced into the steel cover 3, the flow control valve can accurately adjust the liquid nitrogen flow according to the actual conditions such as the size of the ant nest and the texture of the soil, so that the ant nest can achieve the ideal freezing effect within the appropriate time, avoiding liquid nitrogen waste or insufficient freezing.
[0074] Example 5:
[0075] As attached Figure 1 As shown, the difference from Example 4 is that a flexible sealing pad is fixedly bonded to the bottom edge of the steel cover 3, and the flexible sealing pad is made of low-temperature resistant rubber.
[0076] The specific implementation process is as follows:
[0077] When the steel cover 3 is placed on the anthill and nitrogen is introduced, the flexible sealing gasket made of low-temperature resistant rubber has good flexibility and sealing properties, can fit tightly to the ground, fill the gap between the steel cover 3 and the ground, effectively prevent liquid nitrogen leakage, and ensure the airtightness of the freezing environment.
[0078] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.
Claims
1. A device for observing the structure and individual distribution pattern of a red imported fire ant nest, comprising a liquid nitrogen tank (1), a connecting pipe (2), and a steel cover (3) for freezing the ant nest, wherein the steel cover (3) is hemispherical, and the liquid nitrogen tank (1) and the steel cover (3) are connected via the connecting pipe (2), characterized in that: An auxiliary fixing assembly for fixing the steel cover (3) when freezing the anthill is provided at the bottom of the steel cover (3); A cutting assembly for cutting the frozen anthill and a rotating assembly for rotating the cutting assembly are provided on the inner side wall of the steel cover (3); The cutting assembly is provided with a driving assembly for utilizing the pressure of the liquid nitrogen tank (1) to provide power to the cutting assembly and the fixing assembly; The cutting assembly is also provided with a digging assembly for digging out the cut anthill.
2. The overall observation device for the nest structure and individual distribution pattern of red imported fire ants according to claim 1, characterized in that: The fixed assembly includes a plurality of piston holes (4) circumferentially opened at the bottom of the steel cover (3), piston rods (5) are vertically slidably fitted in the piston holes (4), sliders (6) are symmetrically and fixedly connected on the side walls of the piston rods (5), and oblique grooves are opened on the inner side walls of the piston holes (4), and the sliders (6) are slidably fitted with the oblique grooves; The bottom end of the piston column (5) is fixedly connected to the threaded column (7), the outside of the piston column (5) is sleeved with a spring (8), one end of the spring (8) is fixedly connected to the bottom of the steel cover (3), and the other end of the spring (8) is fixedly connected to the top of the adjacent threaded column (7); the piston hole (4) is communicated with the steel cover (3).
3. The overall observation device for the nest structure and individual distribution pattern of red imported fire ants according to claim 2, characterized in that: The rotating assembly includes support rods (11) that are symmetrically and fixedly connected to the inner wall of the steel cover (3), a slide cylinder (12) is provided between the support rods (11), the slide cylinder (12) and the support rods (11) are vertically slidably matched, and a "Z"-shaped annular slide groove is opened on the side wall of the slide cylinder (12); A sleeve (13) is vertically slidably fitted in the slide (12), a limiting block (14) is symmetrically fixedly connected to the side wall of the sleeve (13), and the limiting block (14) and the annular slide groove are both slidably fitted.
4. The overall observation device for the nest structure and individual distribution pattern of red imported fire ants according to claim 3, characterized in that: The driving assembly includes a telescopic cylinder (15) fixedly connected to the inner wall of the steel cover (3), a support column (16) is vertically slidably fitted in the telescopic cylinder (15), one end of the support column (16) away from the telescopic cylinder (15) is fixedly connected to the top of the slide cylinder (12), a tension spring (17) is provided in the telescopic cylinder (15), one end of the tension spring (17) is fixedly connected to the inner top wall of the telescopic cylinder (15), and the other end of the tension spring (17) is fixedly connected to the support column (16); the telescopic cylinder (15) and the steel cover (3) are connected.
5. The overall observation device for the nest structure and individual distribution pattern of red imported fire ants according to claim 4, characterized in that: The cutting assembly comprises a cross bar (9) fixedly connected to the bottom of the sleeve (13), and cutting blades (10) are hingedly connected at both ends of the cross bar (9).
6. The overall observation device for the nest structure and individual distribution pattern of red imported fire ants according to claim 5, characterized in that: The digging assembly comprises a first cylinder (18) symmetrically and fixedly connected to the top of the crossbar (9), and a second cylinder (19) fixedly connected to the inner wall of the steel cover (3). The output shaft of the first cylinder (18) is hinged to one end of the cutting blade (10) adjacent to it, the output shaft of the second cylinder (19) is fixedly connected to the side wall of the slide (12), and the input end of the first cylinder (18) is communicated with the output end of the second cylinder (19).
7. The overall observation device for the nest structure and individual distribution pattern of red imported fire ants according to claim 6, characterized in that: A heat-insulating layer is fixedly connected to the outer side wall of the steel cover (3).
8. The overall observation device for the nest structure and individual distribution pattern of red imported fire ants according to claim 7, characterized in that: A transparent observation window (20) is provided on the side wall of the steel cover (3).
9. The overall observation device for the nest structure and individual distribution pattern of red imported fire ants according to claim 8, characterized in that: A flow control valve and a pressure sensor are provided on the connecting pipe (2).
10. The overall observation device for the nest structure and individual distribution pattern of red imported fire ants according to claim 9, characterized in that: A flexible sealing pad is fixedly connected to the bottom edge of the steel cover (3), and the flexible sealing pad is made of low-temperature resistant rubber.