Dam termite monitoring, trapping and killing device

Abstract

The invention relates to the technical field of dam termite prevention and control, and discloses a dam termite monitoring, trapping and killing device which comprises a shell, the shell comprises an upper shell and a lower shell which are provided with vertical gaps, a lifting frame is arranged in the shell, the lifting frame comprises a plurality of layers of attractant layer plates for containing attractants and a plurality of layers of poison bait layer plates for containing poison baits, and the upper shell and the lower shell are arranged in the shell. The attractant laminates and the poison bait laminates are vertically, alternately and uniformly arranged at intervals, an elastic piece for supporting the lifting frame to move upwards is arranged on the lower side of the lifting frame, telescopic rods for limiting the upper sides of the laminates are arranged at the upper end of the lower shell, and a detection piece for detecting termites is installed on the lower side of the upper shell; according to the device, the activity of termites is detected through the detection piece, the laminates are gradually limited through stretching and retracting of the telescopic rod, the elastic piece provides lifting power for the lifting frame, all the laminates sequentially correspond to the vertical gaps, the attractant laminates and the poison bait laminates to be alternately exposed, automatic replacement of attractants and poison baits is achieved, the manual operation intensity is reduced, and replacement omission is avoided; termite monitoring and trapping effects are improved.

Description

Technical Field

[0001] This invention relates to the field of termite control technology for dikes, specifically to a termite monitoring and trapping device for dikes. Background Technology

[0002] Termite control primarily involves three steps: attracting, killing, and dispersing. The core methods can be categorized into three types: poison baiting, monitoring-based baiting, and physical baiting. Different methods are suitable for different scenarios and termite densities. **Poison Baiting:** Commonly used in households, poison baiting is highly efficient. **Monitoring-based Baiting:** Suitable for long-term prevention and large areas, this method involves setting up a monitoring device to attract termites before placing poison bait. It's suitable for scenarios requiring long-term termite control. Procedure: Dig a shallow pit, place the monitoring device containing the attractant inside, and check periodically. If termites are found, remove the attractant and replace it with poison bait. After the termites carry the bait back to their nest and are killed, the attractant can be reinserted, and monitoring can continue. It offers good concealment, continuous prevention, and is suitable for outdoor or large areas. **Physical Baiting:** This method utilizes the termites' attraction to the environment for physical capture. It's suitable for small-scale, light-scale baiting or as a supplementary method.

[0003] Termite control on dams must balance safety and thoroughness, and methods that could damage the dam structure are strictly prohibited. The advantage of monitoring-based baiting in dam applications lies in its safety and long-term effectiveness. This is the mainstream technology for termite control on dams. By setting up monitoring and baiting devices inside and around the dam, the termite nest is precisely located and poisoned bait is placed, avoiding excavation and damage to the dam structure. The core logic of first placing the attractant and then replacing it with poisoned bait in monitoring-based termite control on dams is to reduce termite vigilance, accurately locate termite colony activity, and avoid wasting pesticides and risks to the dam's water environment. Directly placing poisoned bait can lead to baiting failure or damage to the dam's protective effect. The attractant allows termites to gradually adapt; worker termites will initially test the bait, and once they confirm safety, they will carry it back to the nest in large numbers, forming a stable feeding channel. At this point, the poisoned bait is replaced, and the termites will continue to carry it without suspicion, ensuring the bait successfully enters the nest and spreads to the queen and larvae through feeding behavior, achieving complete colony eradication. Compared to methods and devices that directly introduce termites for extermination, monitoring-based baiting has the advantages of a wider killing range, better effect, and prevention of recurrence.

[0004] The monitoring process of termite monitoring and trapping devices, the replacement cycle of attractants and poison baits can range from several weeks to several months. The monitoring and trapping range of dams is large, and the number of monitoring and trapping points is extremely large. Manual inspection and replacement is labor-intensive and prone to omissions. Summary of the Invention

[0005] The purpose of this invention is to solve the problems in the prior art mentioned above and to provide a termite monitoring and trapping device for dams.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A termite monitoring and trapping device for dams includes a housing, comprising an upper shell and a lower shell with vertical gaps. A lifting frame is provided inside the housing. The lifting frame includes several layers of attractant plates and several layers of bait plates, arranged vertically alternately and at uniform intervals. An elastic element is provided on the lower side of the lifting frame to support its upward movement. A telescopic rod is provided at the upper end of the lower shell to limit the upper side of the plates. A termite detection device is installed on the lower side of the upper shell.

[0007] Furthermore, several guide rails are evenly distributed around the inner circumference of the shell, and the edges of the attractant layer and the poison bait layer are provided with sliding grooves that cooperate with the guide rails. The guide rails support the upper shell and the lower shell to form the vertical gap for termites to enter and exit.

[0008] Furthermore, the guide rail is spiral-shaped, an upper damping plate is connected to the lower side of the lifting frame, and a lower damping plate that contacts the upper damping plate is connected to the upper side of the elastic element.

[0009] Furthermore, the elastic element is a conical spring, the lower end of the lower shell has an opening, and the lower end of the lower shell is connected to a base that closes the opening via a thread.

[0010] Furthermore, the lifting frame includes a vertical sleeve passing through the center of each layer plate, a rotating shaft is provided on the inner side of the sleeve, a vertical groove is provided on the outer side of the rotating shaft, and a protrusion that slides along the vertical groove is provided on the inner side of the sleeve.

[0011] Furthermore, the upper end of the rotating shaft is connected to a disk, and several indicator blocks of two colors are evenly distributed on the upper circumference of the disk. The indicator blocks of the two colors are distributed alternately, and the upper wall of the upper shell is provided with a window for observing the indicator blocks.

[0012] Furthermore, an annular baffle is provided on the outer ring side of the lower end of the upper shell, and the detection element is an infrared sensor, which is installed on the lower side of the annular baffle.

[0013] Furthermore, the upper side of the poison bait layer is provided with an annular plastic film package, the inside of which the poison bait is placed, and the outer ring of the plastic film package corresponds vertically to the groove.

[0014] Furthermore, the guide rail includes an upper wide section, a lower narrow section, and a transition section. The transition section connects the wide section and the narrow section and corresponds to the two layers of plates on the lower side of the vertical gap. The outer side of the transition section is smoothly connected to the wide section and the narrow section. The inner side of the transition section has a transition edge. The transition edges adjacent to the guide rail are respectively provided with a cutting edge and a hook with an opening facing downward.

[0015] Furthermore, the upper side of the poison bait layer is provided with clips for holding the plastic film package, and two clips form a group, with two clips in a group placed on both sides of the slide groove.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention detects termite activity using a detection device, gradually limits the shelf position by extending and retracting the telescopic rod, and provides the lifting power for the lifting frame by an elastic element, so that each shelf corresponds to the vertical gap in sequence, and the attractant shelf and the poison bait shelf are exposed alternately, realizing the automatic replacement of attractant and poison bait, reducing the intensity of manual work, avoiding omissions in replacement, and improving the termite monitoring and killing effect. The shell of this invention adopts an upper shell and a lower shell structure with vertical gaps. The vertical gaps allow termites to pass through and correspond to the upper side of each layer, respectively corresponding to the attractant layer and the poison bait layer. The guide rail guides the lifting frame while maintaining the position of the upper and lower shells. The annular baffle blocks the soil, protects the detection components and telescopic rod, and facilitates termite entry. The guide rail of this invention adopts a spiral shape, which allows the lifting frame to rotate while lifting. Through the frictional damping of the upper and lower damping plates, the upward speed of the lifting frame is reduced during the release of elastic force by the elastic element, thereby reducing the impact of the lifting frame shelf on the telescopic rod, reducing the vibration of the material on the upper part of the shelf, reducing the disturbance to the environment and termites, and improving stability. This invention uses the rotation of the lifting frame to drive the rotating shaft and the disc indicator block to rotate synchronously. During the upward rotation of the shelf, the two colors of the indicator block switch to the corresponding viewing window, so that the vertical gap of the monitoring device can be observed from the outside to check which shelf is being monitored. The present invention features a detachable base with a rotating shaft at the top of a disc that can bring the lifting frame out of the housing, enabling internal cleaning and material placement, and thus allowing for reuse. This invention encapsulates the poison bait in a plastic film to ensure its long-term effectiveness and prevent it from becoming ineffective in moist soil environments after prolonged use. The guide rail of this invention has a transition edge with a wide and narrow transition section. Different guide rail transition edges are respectively provided with a blade and a hook. The blade cuts the plastic film package, and the hook pulls the cut plastic film package, so that the poison bait is automatically leaked out. The transition section corresponds to the spacing between the two layers of plates, so as to achieve a seal between the upper layer of the lower shell and the guide rail. The clamping piece prevents the poison bait from contacting the transition edge and prevents the poison bait from entering the lower part of the lower shell. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the external structure of the present invention.

[0018] Figure 2 This is a schematic diagram of the internal structure of the present invention.

[0019] Figure 3 This is a schematic diagram of the inner side of the upper shell of the present invention.

[0020] Figure 4 This is a schematic diagram of the lower shell of the present invention.

[0021] Figure 5 This is a schematic diagram of the base and elastic element of the present invention.

[0022] Figure 6 This is a schematic diagram of the disk and indicator block of the present invention.

[0023] Figure 7 This is a schematic diagram of the lifting frame from the top side of the present invention.

[0024] Figure 8 This is a schematic diagram of the lifting frame from below according to the present invention.

[0025] Figure 9 This is a schematic diagram of all the guide rails of the present invention.

[0026] Figure 10 This is a schematic diagram of two adjacent guide rails of the present invention.

[0027] Figure 11 This is a schematic diagram of the two layers of plates on the lower side of the vertical gap in the initial state of the present invention.

[0028] Figure 12 for Figure 11 Diagram showing the state without plastic film packaging.

[0029] In the diagram: 1. Upper shell; 2. Lower shell; 3. Vertical gap; 4. Annular baffle; 5. Attractant layer; 6. Poison bait layer; 7. Elastic element; 8. Telescopic rod; 9. Detector; 10. Guide rail; 11. Slide groove; 12. Upper damping plate; 13. Lower damping plate; 14. Rotating shaft; 15. Annular shaft seat; 16. Disc; 17. Indicator block; 18. Viewing window; 19. Base; 20. Sleeve; 21. Protrusion; 22. Vertical groove; 23. Limiting ring; 24. Plastic film wrapping; 25. Clamping piece; 101. Wide section; 102. Narrow section; 103. Transition section; 104. Blade; 105. Hook. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present invention and are not intended to limit the present invention; that is, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0031] Specific embodiments of the termite monitoring and trapping device for dikes provided by this invention: Please refer to the attached document. Figures 1-12 A termite monitoring and trapping device for dams includes a shell, which comprises an upper shell 1 and a lower shell 2 with a vertical gap 3. Both the upper shell 1 and the lower shell 2 are cylindrical structures. The upper shell 1 is closed at the top and has an upper wall.

[0032] The housing contains a lifting frame, and several guide rails 10 are evenly distributed around the inner circumference of the housing. The guide rails 10 fit against and connect to the inner wall of the housing, and cooperate with the edge of the lifting frame to guide the lifting frame. The guide rails 10 support the upper shell 1 and the lower shell 2 to form a vertical gap 3, which allows termites to pass through and enter.

[0033] When in use, this device is buried in the soil outside or around the dam, with the upper end protruding above the ground and marked. The lower outer ring of the upper shell 1 is equipped with an annular baffle 4, which blocks the vertical gap 3. When backfilling, this prevents soil from entering the inside of the vertical gap 3 and also facilitates the entry of termites.

[0034] The lower shell 2 has an opening at its lower end, and a base 19 that closes the opening is connected to the lower end of the lower shell 2 by a thread. The outer side of the outer end of the lower shell 2 is provided with an external thread section, and the base 19 is provided with an internal thread that mates with the external thread section of the lower shell 2, so that the shell can be opened from the lower end, which facilitates the removal of the internal structure, the filling and placement of attractants, the filling and placement of poison bait, and the internal cleaning after use.

[0035] The lifting frame includes several layers of attractant shelves 5 and several layers of poison bait shelves 6. The attractant shelves 5 and poison bait shelves 6 are arranged vertically alternately and at uniform intervals. The edges of the attractant shelves 5 and poison bait shelves 6 are provided with radial grooves 11 that cooperate with the guide rail 10. The lifting frame achieves stable lifting by sliding each shelf along the guide rail 10.

[0036] The attractant is mainly composed of high-cellulose substances that termites love to eat. Pine wood blocks, fir wood chips, sugarcane bagasse, or corn cobs, or a mixture of several, can be used. The material is crushed and mixed with a water-retaining agent, such as bentonite or vermiculite. The water-retaining agent is mixed into the high-cellulose material to retain moisture, making it easier for termites to feed. An odor enhancer, such as a trace amount of cellulose decomposition liquid, is added. After mixing evenly, it is made into small particles, which are easy for termites to carry.

[0037] The odor of rotten plant cellulose is more attractive and can enhance the attraction effect on termites. In this embodiment, the attractant is not protected against decay and is placed directly on the upper side of the attractant layer 5. A limiting ring 23 is provided on the upper side of the attractant layer 5. The attractant is placed inside the limiting ring 23, while the sliding groove 11 is located outside the limiting ring 23.

[0038] In this embodiment, the poisoned bait is made by mixing a low-toxicity, slow-acting, and highly infectious agent into an attractant that termites readily consume. Worker termites carry the bait back to the nest, where it spreads its toxicity through feeding behavior, ultimately killing the queen and larvae, achieving complete colony eradication. The poisoned bait's appearance and main components are similar to the attractant's, making it indistinguishable to the termites and ensuring they actively feed on it. The toxic agent used is fipronil or thiamethoxam; its slow toxicity means that termites will not die within two to three days after feeding on it, giving them ample time to carry it back to the nest and spread the poison.

[0039] The lower side of the lifting frame is provided with an elastic element 7 to support the upward movement of the lifting frame. The elastic element 7 abuts between the base 19 and the lifting frame, or the lower end of the elastic element 7 is connected to the base 19 and the upper end abuts against the lifting frame. The elastic element 7 provides the power for the lifting frame to rise.

[0040] The elastic element 7 is a conical spring. Compared with a cylindrical spring, the large end spring coil of the conical spring deforms first when deformed, which effectively reduces the impact load. The conical spring can withstand a larger load. Under the same size, the conical spring has a lower compression height, which can reduce the size of the housing and make the device smaller.

[0041] The upper end of the lower shell 2 is provided with telescopic rods 8 that limit the upper side of the shelf. Several telescopic rods 8 are arranged evenly around the circumference. The telescopic ends of the telescopic rods 8 extend out and block the upper side of the shelf, thereby restricting the upward movement of the lifting frame and the release of the conical springs; when the telescopic ends of the telescopic rods 8 retract, the shelf and the lifting frame rise under the lifting action of the conical springs; after the telescopic ends of the telescopic rods 8 retract briefly, they immediately extend again. Due to the gaps between the shelf panels, the shelf is positioned by rising layer by layer.

[0042] In this embodiment, the spacing between adjacent shelves on the lifting frame is constant, and the spacing between adjacent shelves is greater than the vertical span of the vertical gap 3. The shelves rise one by one, and the vertical gap 3 corresponds to the gap between only one shelf. Thus, only the upper part of one shelf corresponds to the vertical gap 3, and the gaps between other shelves are sealed by the shell to prevent termites from entering and moving between other shelf gaps.

[0043] Several termite detection elements 9 are installed on the lower side of the shelf and the upper shell 1. When termites pass through the vertical gap 3, their activity is detected by the detection elements 9. The detection elements 9 are infrared sensors and are installed on the lower side of the annular baffle 4. The telescopic rod 8 is located below the annular baffle 4.

[0044] In this embodiment, the telescopic rod 8 uses an electromagnet. When the electromagnet is de-energized, the telescopic rod extends; when energized, the telescopic end retracts, reducing power consumption. The detection element 9 is connected to the controller. The controller receives signals from the detection element 9 and controls the telescopic rod 8 to move. In some embodiments, a power supply is also provided. The power supply can be a storage battery or a dry cell battery, located outside the soil. The controller and power supply are protected by a casing and connected to the telescopic rod 8 and the detection element 9 via wires.

[0045] In this embodiment, the top layer of the lifting frame is the attractant layer 5, and the bottom layer consists of the poison bait layer 6, attractant layer 5, and poison bait layer 6, etc. When the detection element 9 detects termite activity for three consecutive days, the controller retracts the telescopic end of the telescopic rod 8, and the conical spring raises the lifting frame, extending the telescopic end of the telescopic rod 8. The top attractant layer 5 rises into the upper shell 1, and the second layer of poison bait layer 6 corresponds to the vertical gap 3, allowing termites to feed and transport the bait. After the detection element 9 detects termite activity for another two days, the controller retracts the telescopic end of the telescopic rod 8 and then quickly extends it, so that the third layer of attractant layer 5 corresponds to the vertical gap 3. In this way, the lifting frame rises layer by layer, achieving the purpose of automatically replacing attractants and poison bait, enabling long-term use, reducing manual labor intensity, avoiding omissions in replacement, and improving the termite monitoring and killing effect.

[0046] The vertical lifting of the lifting frame and the direct impact of the shelves on the telescopic rod 8 under the action of the conical springs have a large impact on the telescopic rod 8, which may cause the telescopic rod 8 to be unstable or even damaged and the overall vibration of the device to be large. It may also disturb termites, resulting in a decrease or even failure of the trapping effect. Therefore, in this embodiment, the guide rail 10 is set as a spiral plate structure, and each shelf of the lifting frame is adapted to the guide rail 10 so that the lifting frame rotates synchronously during the lifting process.

[0047] The lifting frame includes a vertical sleeve 20 passing through the center of each shelf. The sleeve 20 is integrally connected to each shelf. A rotating shaft 14 is provided inside the sleeve 20. A vertical groove 22 is provided outside the rotating shaft 14. A protrusion 21 that slides along the vertical groove 22 is provided inside the sleeve 20. There are two vertical grooves 22 and two protrusions 21. The two vertical grooves 22 are symmetrical on both sides of the rotating shaft 14. The protrusions 21 are vertical strips. The two protrusions 21 are symmetrical on the inside of the sleeve 20.

[0048] The rotating shaft 14 rotates with the lifting frame. Through the cooperation of the protrusion 21 and the vertical groove 22, the lifting frame moves up and down relative to the rotating shaft 14. The inner side of the upper wall of the upper shell 1 and the upper side of the center of the base 19 are provided with annular shaft seats 15. The annular shaft seats 15 allow the end of the rotating shaft 14 to extend into and support the rotation of the rotating shaft 14.

[0049] In this embodiment, the lifting frame includes three layers of attractant plates 5 and three layers of poison bait plates 6, with the uppermost layer being the attractant plate 5 and the lowermost layer being the poison bait plate 6. An annular upper damping plate 12 is connected to the lower center of the lifting frame, i.e., the lower center of the bottom poison bait plate 6. A lower damping plate 13, which contacts the upper damping plate 12, is connected to the upper side of the elastic element 7. The lower damping plate 13 has an annular structure, and the lower damping plate 13 surrounds the rotating shaft 14 with a gap.

[0050] Friction surfaces are provided on the lower side of the upper damping plate 12 and the upper side of the lower damping plate 13. During the upward rotation of the lifting frame by the lower damping plate 13, friction damping is generated, which reduces the upward speed of the lifting frame during the release of elastic force by the elastic element 7, reduces the impact of the lifting frame shelf on the telescopic rod 8, reduces the vibration of the material on the upper side of the shelf, and at the same time reduces the disturbance to the environment and termites, and improves stability.

[0051] The upper end of the rotating shaft 14 is connected to the disk 16. Several indicator blocks 17 of two colors are evenly distributed on the upper circumference of the disk 16. The indicator blocks 17 of the two colors are distributed alternately. The upper wall of the upper shell 1 is provided with a viewing window 18 for observing the indicator blocks 17. The viewing window 18 includes a transparent acrylic plate. The upper wall of the upper shell 1 is provided with a through hole, and the aforementioned acrylic plate is embedded in the through hole.

[0052] In this embodiment, the vertical span of the guide rail 10 is one pitch, i.e., one turn of the spiral. The pitch of the guide rail 10 is twelve times the center-to-center distance between adjacent layers. The lifting frame rises by one adjacent layer distance while simultaneously rotating one-twelfth of a revolution. Therefore, twelve indicator blocks 17 are provided, six of each of the two colors. The two colors of indicator blocks 17 correspond to the attractant layer 5 and the poison bait layer 6, respectively. Since the upper end of the upper shell 1 protrudes from the soil, the color of the indicator blocks 17 can be observed through the viewing window 18 to determine whether the vertical gap 3 corresponds to the attractant layer 5 or the poison bait layer 6.

[0053] During the disassembly of the lifting frame after use, the base 19 is removed, the rotating shaft 14 is pulled out, and the disc 16 can lower and rotate the lifting frame, allowing it to be discharged from the housing. Then, the lifting frame is cleaned and the attractant and poison bait are repositioned. The lifting frame is then reinstalled into the housing, allowing the device to be reused repeatedly.

[0054] The poison in the bait has a short effective period after exposure. Since the attractant's cycle for attracting termites is long, sometimes lasting several months, this device can attract and release bait multiple times, extending its lifespan. However, because the bait is placed in the damp soil at the dam for extended periods, it is prone to deterioration and loss of effectiveness. Therefore, a ring-shaped plastic film package 24 is provided on the upper side of the bait layer 6. The bait is placed inside the plastic film package 24, which is made of flexible plastic film.

[0055] When placing the poison bait, first place the poison bait inside the cylindrical plastic film package 24, and wrap it into a ring shape. Seal the two ends with glue or heat seal to form a ring-shaped plastic film package 24. The plastic film package 24 can isolate the external humid environment and ensure that the poison bait inside is effective for a long time. In some embodiments, a desiccant package is placed inside the plastic film package 24.

[0056] In order to expose the poison bait layer on the upper side of the poison bait layer 6 when corresponding to the vertical gap 3, in this embodiment, the outer ring of the plastic film package 24 is vertically aligned with the slide groove 11; the guide rail 10 includes an upper wide section 101, a lower narrow section 102 and a transition section 103. The transition section 103 is connected between the wide section 101 and the narrow section 102 and is always horizontally aligned with the two layers of the layer on the lower side of the vertical gap 3. The outer side of the transition section 103 is smoothly connected to the wide section 101 and the narrow section 102. The inner side of the transition section 103 has a transition edge. The transition edges of adjacent guide rails 10 are respectively provided with a blade 104 and a hook 105 with an opening facing downward.

[0057] The blade 104 is a sharp cutting part after grinding, and the hook 105 is located on the upper part of the transition edge. The hook 105 is formed by cutting a notch on the transition edge, and the opening of the hook 105 faces downward. In this embodiment, there are four guide rails 10: two guide rails 10 with hooks 105 and two guide rails 10 with blades 104. The transition edges of adjacent guide rails 10 have blades 104 and hooks 105, respectively.

[0058] The wide section 101 of the guide rail 10 is perfectly fitted to the slide groove 11 to achieve a seal. There is a gap between the narrow section 102 and the inner side of the slide groove 11, but it does not affect the guidance of the lifting frame. The transition section 103 corresponds to the two layers of plates below the vertical gap 3. When the poison bait plate 6 moves upward and is about to correspond to the vertical gap 3, the upward movement causes the plastic film package 24 to contact the blade 104 and the hook 105. The blade 104 first cuts the annular plastic film package 24, making a cut in the plastic film package 24. As the poison bait plate 6 moves upward, the hook 105 hooks the plastic film package 24 and pulls down the broken plastic film package 24, exposing the poison bait.

[0059] To prevent the poison bait from passing through the gap between the transition section 103 and the chute 11, the hook 105 is located on the upper part of the transition section 103. The upper side of the poison bait shelf 6 is provided with clamping pieces 25 that hold the plastic film package 24. Two clamping pieces 25 form a group, with each group of two clamping pieces 25 positioned on either side of the chute 11. The clamping pieces 25 are inverted L-shaped and made of elastic steel sheets, clamping the plastic film package 24 to the upper side of the poison bait shelf 6. Simultaneously, when placing the poison bait, the poison bait inside the plastic film package 24 is dispersed, leaving only the plastic film package 24 at the clamping pieces 25 and the chute 11. This prevents the blade 104 from cutting the poison bait and the hook 105 from hooking it. It also prevents the poison bait from contacting the transition edge and from entering the lower part of the lower shell 2. The plastic film package 24 provides initial sealing protection against bait failure. The coordinated movement of the shelf and the transition section 103 ensures smooth release and exposure of the poison bait during use, achieving the goals of long-term use, multiple replacements, and efficient baiting.

[0060] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments without creative effort, or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A termite monitoring and trapping device for dams, comprising a shell ( ), characterized in that, The shell includes an upper shell (1) and a lower shell (2) with a vertical gap (3). A lifting frame is provided inside the shell. The lifting frame includes several layers of attractant plates (5) for placing attractants and several layers of poison bait plates (6) for placing poison bait. The attractant plates (5) and poison bait plates (6) are arranged vertically alternately and at uniform intervals. An elastic element (7) is provided on the lower side of the lifting frame to support the upward movement of the lifting frame. A telescopic rod (8) is provided at the upper end of the lower shell (2) to limit the upper side of the plates. A detection element (9) for detecting termites is installed on the lower side of the upper shell (1).

2. The termite monitoring and trapping device for dikes according to claim 1, characterized in that, The inner circumference of the shell is evenly distributed with several guide rails (10), and the edges of the attractant layer (5) and the poison bait layer (6) are provided with grooves (11) that cooperate with the guide rails (10). The guide rails (10) support the upper shell (1) and the lower shell (2) to form the vertical gap (3) for termites to enter and exit.

3. The termite monitoring and trapping device for dikes according to claim 2, characterized in that, The guide rail (10) is spiral-shaped, and an upper damping plate (12) is connected to the lower side of the lifting frame. A lower damping plate (13) that contacts the upper damping plate (12) is connected to the upper side of the elastic element (7).

4. The termite monitoring and trapping device for dikes according to claim 1 or 3, characterized in that, The elastic element (7) is a conical spring, the lower end of the lower shell (2) has an opening, and the lower end of the lower shell (2) is connected to a base (19) with a closed opening by a thread.

5. The termite monitoring and trapping device for dikes according to claim 3, characterized in that, The lifting frame includes a vertical sleeve (20) passing through the center of each layer plate. The sleeve (20) has a rotating shaft (14) on its inner side and a vertical groove (22) on its outer side. The sleeve (20) has a protrusion (21) that slides along the vertical groove (22) on its inner side.

6. The termite monitoring and trapping device for dikes according to claim 5, characterized in that, The upper end of the rotating shaft (14) is connected to the disk (16). Several indicator blocks (17) of two colors are evenly distributed on the upper circumference of the disk (16). The indicator blocks (17) of the two colors are distributed alternately. The upper wall of the upper shell (1) is provided with a window (18) for observing the indicator blocks (17).

7. The termite monitoring and trapping device for dikes according to claim 1, characterized in that, The upper shell (1) has an annular baffle (4) on the outer ring side at the lower end, and the detection element (9) is an infrared sensor and is installed on the lower side of the annular baffle (4).

8. The termite monitoring and trapping device for dikes according to claim 3, characterized in that, The upper side of the poison bait layer (6) is provided with an annular plastic film package (24), the inside of the plastic film package (24) is placed with poison bait, and the outer ring of the plastic film package (24) is vertically aligned with the groove (11).

9. The termite monitoring and trapping device for dikes according to claim 8, characterized in that, The guide rail (10) includes an upper wide section (101), a lower narrow section (102) and a transition section (103). The transition section (103) connects the wide section (101) and the narrow section (102) and corresponds to the two layers of plates on the lower side of the vertical gap (3). The outer side of the transition section (103) is smoothly connected to the wide section (101) and the narrow section (102). The inner side of the transition section (103) has a transition edge. The transition edges adjacent to the guide rail (10) are respectively provided with a blade (104) and a hook (105) with an opening facing downward.

10. The termite monitoring and trapping device for dikes according to claim 9, characterized in that, The upper side of the poison bait layer plate (6) is provided with clips (25) for holding plastic film packages (24). Two clips (25) form a group, and two clips (25) in a group are placed on both sides of the slide groove (11).

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