Detection device for termite nest

Abstract

The invention provides a detection device for a termite nest. The detection device comprises a box body, the box cover is arranged at the top of the box body; the supporting system comprises a support arranged on the lower end face of the box body, and the support is connected with supporting legs; the conveying system comprises a conveying cylinder arranged in the box body, the conveying cylinder penetrates through the bottom of the box body, the conveying cylinder is of a hollow structure, the two ends of the conveying cylinder are open, a fixing block is arranged in the conveying cylinder, a channel is formed in the fixing block, a fixing plate is arranged at the position of the channel, and the fixing plate is connected with an outer fixing shell; the outer fixing shell is connected with an inner conveying shell, a pressing belt is arranged on the inner conveying shell, the other end of the pressing belt is connected with a pulling plate, the end of the pulling plate is connected with a connecting plate through a pin shaft, and the other end of the connecting plate is connected with a supporting frame B. The termite detection device has the advantages that detection of termite nests can be achieved, and the automation degree is high.

Description

Technical Field

[0001] The present invention relates to the technical field of termite nest detection, and in particular to a detection device for termite nests. Background Art

[0002] Termite nest detection currently relies on the traditional willow twig probing method, which relies heavily on tactile perception. Diggers gently insert a twig into an anthill, feeling the contact between the twig and the anthill to infer the direction of the anthill. They then dig along the path, repeating this process to uncover the nest. This method is inefficient and relies heavily on experience.

[0003] The patent publication number CN113552651A was retrieved, and the patent name is a public material of a probe-type verification device for underground termite nests, which specifically discloses a probe-type verification device for underground termite nests, including a trailer, a pressure insertion mechanism is provided on the top of the trailer, a probe is connected to the pressure insertion mechanism, a needle is provided at the bottom end of the probe, a humidity sensor is provided in the inner cavity of the needle, a water pipe is fixedly installed at the bottom end of the inner cavity of the probe, a rubber sleeve is provided on the outer fixed sleeve of the water pipe, the inner cavity of the water pipe is connected to the inner cavity of the probe and the rubber sleeve, the inner cavity of the rubber sleeve is connected to the external environment at the same time, and the outer sleeve of the rubber sleeve is provided with an elastic support. A spring is supported between the piston and the probe, and the interior of the needle is connected to the external environment. The pressure insertion mechanism drives the probe to be inserted into the soil, and finally penetrates the waterproof layer of the termite nest and enters the interior of the nest, so that the humidity sensor can detect the humidity conditions in the termite nest. A water permeable hole is provided on the outer surface of the water pipe, and the inner cavity of the water pipe is connected with the interior of the rubber sleeve through the water permeable hole. The upper and lower hollows of the piston connect the water pipe and the inner cavity of the probe. The top of the probe is connected to a water pump to the outside, and water is injected into the inner cavity of the probe. Water enters the water pipe through the piston, and the water pressure will directly press down on the inner cavity of the water pipe. While pushing the water pipe downward, water will also enter the water outlet through the rubber sleeve. Preferably, a water outlet is provided on the surface of the rubber sleeve for communicating with the external environment. The water outlet is always located outside the waterproof layer of the termite nest. There is not only one water outlet, but it can be distributed in a ring array on the surface of the rubber sleeve. However, it needs to be opened at the top of the rubber sleeve, and the water outlet can be initially blocked with a plug. Subsequently, the plug will be opened as the water flow inside it gradually expands. The water flow will quickly soak the surrounding soil, and the soaking range will spread downward. When the lower surface of the rubber sleeve is stuck on the waterproof layer of the termite nest, the water flow cannot pass through, thereby ensuring that the internal humidity of the termite nest is normal and there will be no large jump. This can be used to determine whether it is a termite nest.

[0004] The publicly disclosed material with the patent publication number CN213719531 and the patent name of a termite nest position detection device was retrieved, and specifically discloses a termite nest position detection device, including a liquid medicine pot, an ultrasonic detection main body, a detection rod, a digital display screen, operation buttons, a spiral mounting head, a speaker, a pressing type nozzle, a sealing cover, a first clamping block, a second clamping block, a second portable ring, and a charging interface. The pressing type nozzle is fixedly installed at the center of the bottom of the liquid medicine pot, and the sealing cover is sleeved outside the pressing type nozzle. The second clamping block is fixedly installed on the back of the liquid medicine pot, and the ultrasonic detection main body is fixedly installed on the top of the liquid medicine pot. The digital display screen and operation buttons are sequentially inlaid and installed on the base surface of the ultrasonic detection main body from top to bottom. Speakers are arranged on both sides of the bottom of the operation buttons. The portable ring and the first clamping block are fixedly installed on the back of the ultrasonic detection main body. A charging interface is arranged on one side of the ultrasonic detection main body. The detection rod is arranged on the top of the ultrasonic detection main body, and the detection rod and the ultrasonic detection main body are spirally installed through the spiral mounting head.

[0005] By analyzing the above publicly disclosed material, it can be seen that by using the probe type verification device, the detection distance is short. Due to the intricate and irregular underground nests of termites. Summary of the Invention

[0006] In view of this, the present invention provides a detection device for termite nests, which can not only detect termite nests, but also has a high degree of automation.

[0007] To solve the above technical problems, the present invention provides a termite nest detector, including a box body; A box cover, which is arranged on the top of the box body; A support system, which includes a bracket arranged on the lower end surface of the box body, and the bracket is connected with legs; A transmission system, which includes a transmission cylinder arranged in the box body. The transmission cylinder penetrates the bottom of the box body. The transmission cylinder is of a hollow structure with both ends open. A fixing block is arranged inside the transmission cylinder. A channel is arranged inside the fixing block. A fixing plate is arranged at the channel. The fixing plate is connected with an outer fixing shell. The outer fixing shell is connected with an inner delivery shell. A pressing belt is arranged on the inner delivery shell. The other end of the pressing belt is connected with a pulling plate. The end of the pulling plate is connected with a connecting plate through a pin shaft. The other end of the connecting plate is connected with a support frame B. A cylinder push rod is fixedly arranged on the lower end surface of the support frame B, and the telescopic end of the cylinder push rod faces the pulling plate; A moving system, which includes a motor arranged on the end surface of the support frame B. The output end of the motor is fixedly connected with a gear column. The gear column is connected with a rack through an engagement method. The rack is arranged on the inner side surface of the fixing block and forms a groove shape; Feeding system, the feeding system includes a support frame A arranged on the upper end surface of the conveying cylinder, an insertion hole is arranged on the support frame A, a detection strip is inserted into the insertion hole, a camera is installed at the end of the detection strip, support blocks are arranged around the insertion hole, rollers are arranged at the upper ends of the support blocks, the detection strip is placed on the rollers, and the detection strip is connected to a winding reel.

[0008] Furthermore, the bracket is of a rectangular strip structure and is hollow inside, the leg is of a cylindrical structure, locking screws are arranged on the outer side surface of the bracket, and the locking screws are connected to the bracket by means of threaded connection. After the locking screws penetrate through the bracket, they are in contact connection with the leg.

[0009] Furthermore, the horizontal cross-section of the conveying cylinder is of a rectangular structure, the outer side surface of the conveying cylinder is fixedly connected to the bottom of the box body, and the lower end of the conveying cylinder extends out of the bottom of the box body.

[0010] Furthermore, the outer side surface of the fixing block is fixedly connected to the inner side surface of the conveying cylinder, the length of the fixing block is shorter than that of the conveying cylinder, the middle position of the fixing block is designed with a square hole, and the square hole vertically penetrates through the fixing block to form a channel.

[0011] Furthermore, a horizontally arranged fixing plate is fixed on the inner side surface of the fixing block, an outer fixing shell is connected to the inner side surface of the fixing plate, the outer fixing shell is of a cylindrical structure with through holes and is designed with openings at both ends, a sliding groove is arranged on the inner side surface of the outer fixing shell, and the sliding groove is connected to the inner feeding shell.

[0012] Furthermore, an arc-shaped hole is arranged on the inner feeding shell, a pressing belt is arranged in the arc-shaped hole, one end of the pressing belt is fixedly connected to the inner feeding shell, the pressing belt is an elastic sheet, and the other end of the pressing belt is fixedly connected to the inner side surface of the pulling plate.

[0013] Furthermore, when the connecting plate is flush with the inner side surface of the inner feeding shell on the inner side surface of the pressing belt, it is in an inclined state and faces the cylinder push rod.

[0014] Furthermore, a through hole along the axial direction is arranged on the outer fixing shell, and the through hole penetrates through the wall of the outer fixing shell for the moving space of the pulling plate, and the pulling plate penetrates through the through hole and the arc-shaped hole.

[0015] Furthermore, a sliding hole is arranged on the support frame B, a circular rod is placed in the hole, and both ends of the circular rod are connected to the fixing block through a frame body and are used for the limit of the support frame B.

[0016] The beneficial effects of the above technical solutions of the present invention are as follows: 1. It can detect termite nests. With this device, a detection strip can be extended into the termite nest, and the internal situation of the nest can be seen through the camera at the front end of the detection strip, and a judgment on the next detection direction can be made. Brief Description of the Drawings

[0017] Figure 1 is the front view of the present invention; Figure 2 is Figure 1 the isometric view of; Figure 3 is Figure 2 the schematic structural view after removing the box cover in; Figure 4 is the schematic internal structural view of another perspective of the present invention; Figure 5 is Figure 4 the enlarged view of A in; Figure 6 is the front view of the conveying system; Figure 7 is Figure 6 the three-dimensional view of; In the figure: 1. Box body; 2. Box cover; 3. Bracket; 4. Locking screw; 5. Leg; 6. Detection strip; 7. Camera; 8. Support frame A; 9. Controller; 10. Take-up reel; 11. Fixed block; 12. Insertion hole; 13. Support block; 14. Drum; 15. Outer fixed shell; 16. Inner delivery shell; 17. Compression belt; 18. Pulling plate; 19. Connecting plate; 20. Support frame B; 21. Cylinder push rod; 22. Motor; 23. Gear column; 24. Rack; 25. Fixed plate; 26. Limit ring; 27. Conveying cylinder; 28. Slide groove; 29. Arc hole; 30. Through hole; 31. Sliding hole; 32. Camera. Detailed Description of the Embodiments

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will combine the attached Figures 1-7 drawings of the embodiments of the present invention to clearly and completely describe the technical solutions of the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art belong to the scope protected by the present invention.

[0019] As Figures 1-7 shown: Embodiment 1

[0020] A termite nest detector, comprising a box body 1; a box cover 2, the box cover 2 is arranged on the top of the box body 1; a support system, the support system includes a bracket 3 arranged on the lower end face of the box body 1, and the bracket 3 is connected with a leg 5; a transmission system, the transmission system includes a transmission cylinder 27 arranged in the box body 1, the transmission cylinder 27 penetrates through the bottom of the box body 1, the transmission cylinder 27 is of a hollow structure and has openings at both ends, a fixing block 11 is arranged inside the transmission cylinder 27, a channel is arranged inside the fixing block 11, a fixing plate 25 is arranged at the channel, the fixing plate 25 is connected with an outer fixing shell 15, the outer fixing shell 15 is connected with an inner feeding shell 16, a pressing belt 17 is arranged on the inner feeding shell 16, the other end of the pressing belt 17 is connected with a pulling plate 18, the end of the pulling plate 18 is connected with a connecting plate 19 through a pin shaft, the other end of the connecting plate 19 is connected with a support frame B20, a cylinder push rod 21 is fixedly arranged on the lower end face of the support frame B20, and the telescopic end of the cylinder push rod 21 faces the pulling plate 18; a moving system, the moving system includes a motor 22 arranged on the end face of the support frame B20, an output end of the motor 22 is fixedly connected with a gear column 23, the gear column 23 is connected with a rack 24 in a meshing manner, the rack 24 is arranged on the inner side face of the fixing block 11 and forms a groove; a feeding system, the feeding system includes a support frame A8 arranged on the upper end face of the transmission cylinder 27, an insertion hole 12 is arranged on the support frame A8, a detection strip 6 is inserted into the insertion hole 12, a camera 7 is installed at the end of the detection strip 6, support blocks 13 are arranged around the insertion hole 12, rollers 14 are arranged on the upper ends of the support blocks 13, the detection strip 6 is placed on the rollers 14, and the detection strip 6 is connected with a winding reel 10.

[0021] In this embodiment, the detection device includes a box body 1. A bracket 3 is provided on the lower end surface of the box body 1. The bracket 3 is used to support the box body 1. Legs 5 are installed on the bracket 3. The lengths of the legs 5 can be adjusted by locking screws 4 so as to adapt to different terrains. A transfer cylinder 27 is arranged inside the box body 1. Through the transfer cylinder 27, the detection strip 6 can be slowly extended into the termite nest to detect the channels in the termite nest and gradually find the queen's nest. A fixing block 11 is arranged in the transfer cylinder 27. The inside of the fixing block 11 is a channel. A fixing plate 25 is arranged inside the channel and is fixedly connected to an outer fixing shell 15 through the fixing plate 25. The outer fixing shell 15 is connected to an inner feeding shell 16. The inner feeding shell 16 is used to clamp and transfer the detection strip 6. A pressing belt 17 is arranged in the inner feeding shell 16. The pressing belt 17 can clamp the detection strip 6, and then under the action of the moving system, the transfer of the detection strip 6 is realized. In the feeding system, in order to protect the detection strip 6 and improve the smoothness of feeding, by arranging a support block 13 and arranging a roller 14 on the support block 13, feeding can be conveniently carried out. One end of a winding drum 10 is connected to a motor. The motor is controlled by the PLC program in the controller. Synchronous with the motor, the winding drum 10 can feed and also wind up materials. Embodiment 2

[0022] The bracket 3 is of a rectangular bar structure and is hollow inside. The legs 5 are of a cylindrical structure. A locking screw 4 is arranged on the outer side surface of the bracket 3, and the locking screw 4 is connected to the bracket 3 by a threaded connection. After the locking screw 4 penetrates through the bracket 3, it is in contact connection with the legs 5.

[0023] Different from the above embodiment, in this embodiment, the inside of the bracket 3 is hollow, the legs 5 are inserted, and the bracket 3 is connected with a locking screw 4. The position of the legs 5 can be locked by the locking screw 4. Embodiment 3

[0024] The horizontal cross-section of the transfer cylinder 27 is of a rectangular structure. The outer side surface of the transfer cylinder 27 is fixedly connected to the bottom of the box body 1, and the lower end of the transfer cylinder 27 extends out of the bottom of the box body 1.

[0025] Different from the above embodiment, in this embodiment, the transfer cylinder 27 is fixed on the box body 1, and the transfer cylinder 27 penetrates through the bottom of the box body 1 and extends out of the box body 1 downward. Embodiment 4

[0026] The outer side surface of the fixing block 11 is fixedly connected to the inner side surface of the transfer cylinder 27. The length of the fixing block 11 is shorter than that of the transfer cylinder 27. The middle position of the fixing block 11 is designed with a square hole, and it vertically penetrates through the fixing block 11 to form a channel.

[0027] Different from the above embodiments, in this embodiment, a vertical channel is provided in the middle of the fixed block 11. Embodiment 5

[0028] A horizontally arranged fixed plate 25 is fixed on the inner side surface of the fixed block 11. The inner side surface of the fixed plate 25 is connected with an outer fixed shell 15. The outer fixed shell 15 is a cylindrical structure with a through hole 30 and is designed with openings at both ends. A sliding groove 28 is arranged on the inner side surface of the outer fixed shell 15, and the sliding groove 28 is connected to the inner feeding shell 16.

[0029] Different from the above embodiments, in this embodiment, the fixed plate 25 is used to connect the fixed block 11 and the outer fixed shell 15. The outer fixed shell 15 also serves as a channel. A sliding groove 28 is arranged on the inner side surface of the outer fixed shell 15, and a raised strip is arranged on the inner feeding shell 16 at the corresponding position. The raised strip and the sliding groove 28 cooperate to realize the stable movement of the inner feeding shell 16. Embodiment 6

[0030] An arc-shaped hole 29 is formed in the inner feeding shell 16. A pressing belt 17 is arranged in the arc-shaped hole 29. One end of the pressing belt 17 is fixedly connected to the inner feeding shell 16. The pressing belt 17 is an elastic sheet, and the other end of the pressing belt 17 is fixedly connected to the inner side surface of the pull plate 18.

[0031] Different from the above embodiments, in this embodiment, the arc-shaped hole 29 is designed as a semi-circle. A pressing belt 17 is arranged inside the arc-shaped hole 29. The pressing belt 17 is an arc-shaped sheet structure, filling the position of the arc-shaped hole 29, and the pressing belt 17 has elasticity and can deform inward to clamp the detection strip 6. Embodiment 7

[0032] When the connecting plate 19 is flush with the inner side surface of the inner feeding shell 16 on the inner side surface of the pressing belt 17, it is in an inclined state and faces the cylinder push rod 21.

[0033] Different from the above embodiments, in this embodiment, when the inner side surface of the pressing belt 17 is flush with the inner side surface of the inner feeding shell 16, the connecting plate 19 is inclined and faces the cylinder push rod 21. After the cylinder push rod 21 presses the pull plate 18, the pull plate 18 makes an arc-shaped movement and squeezes the pressing belt 17 to press the detection strip 6 inward. Embodiment 8

[0034] A through hole 30 along the axial direction is arranged on the outer fixed shell 15, and the through hole 30 penetrates the wall of the outer fixed shell 15 to provide a moving space for the pull plate 18. The pull plate 18 penetrates the through hole 30 and the arc-shaped hole 29.

[0035] Different from the above embodiment, in this embodiment, a through hole 30 is further provided on the outer fixing shell 15 . The through hole 30 is along the axis of the outer fixing shell 15 and is used as a clearance space when the pulling plate 18 moves. Example 9

[0036] The support frame B20 is provided with a sliding hole 31, in which a round rod is placed. Both ends of the round rod are connected to the fixing block 11 through the frame body and are used to limit the support frame B20.

[0037] Different from the above embodiment, in this embodiment, in order to maintain the stability of the mobile system, a sliding hole 31 is provided on the support frame B20, and a circular rod is passed through it. The two ends of the circular rod are connected to the frame to form a door frame structure, and are fixed on the inner side of the fixed block 11.

[0038] Working method (or working principle) of the present invention: When the technology is working, first find the hole of the termite nest, then set up the device at the hole, adjust the position of the legs 5, and fix it by tightening the screws 4. Then operate the controller 9 set inside the box body 1 to start transmitting the detection strip 6. The detection strip 6 is a material with a hardness similar to that of a wicker. It passes through a transmission system. Specifically, the transmission system includes an inner delivery shell 16 inside an outer fixed shell 15. A pressing belt 17 is provided in the middle position of the inner delivery shell 16. The pressing belt 17 is an elastic strip, one end of which is fixedly connected to the inner delivery shell 16 and the other end is connected to the pull plate 18. Under the action of the cylinder push rod 21, the pull plate 18 is pushed to perform an outward arc movement, that is, the movement direction of the pull plate 18 is an arc movement under the combined force of the outward and inward axial directions of the delivery shell 15. Explanation of the arc movement: one end of the pull plate 18 is connected to the pressing belt 17, and the pressing belt 17 is an elastic member. The other end of the pressure plate 18 is connected to the connecting plate 19. Under the action of the cylinder push rod 21, the pressure plate 18 is pushed to move, and Under the action of the connecting plate 19, the pressure plate 18 moves around the connecting plate 19, thereby achieving arc movement; the force in the direction of the axis of the inner delivery shell 16 can drive the compression belt 17 to contract inwardly of the inner delivery shell 15, thereby compressing the detection strip 6. After the detection strip 6 is compressed by the compression belt 17, the motor 22 is started again, and the gear column 23 connected to the output end of the motor 22 rotates. The gear column 23 engages with the fixed rack 24. Under the reaction force of the rack 24, the motor 22 begins to move in a direction parallel to the axis of the inner delivery shell 16, thereby achieving the forward movement of the clamped detection strip 6 and gradually extending it into the cave. Since the front end of the detection strip 6 is equipped with a camera 7, when it encounters a fork, it can be seen on the display screen of the controller 9, and then the next direction of detection can be prepared. Due to the complexity of the interior of the termite nest, after detecting a distance at one end, it is necessary to dig a distance and then continue to repeat the above operation.

[0039] In the present invention, unless otherwise clearly specified and defined, for example, it may be fixedly connected, may also be detachably connected, or integrated; it may be mechanically connected, may also be electrically connected; it may be directly connected, or indirectly connected through an intermediate medium, and may be the communication inside two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] The above are the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A detection device for termite nests, characterized in that: Including, a box body (1); a box cover (2), which is arranged on the top of the box body (1); a support system, the support system includes a bracket (3) arranged on the lower end face of the box body (1), and the bracket (3) is connected with a support leg (5); a conveying system, the conveying system includes a conveying cylinder (27) arranged in the box body (1), the conveying cylinder (27) penetrates through the bottom of the box body (1), the conveying cylinder (27) is of a hollow structure with both ends open, a fixing block (11) is arranged inside the conveying cylinder (27), a channel is arranged inside the fixing block (11), a fixing plate (25) is arranged at the channel, the fixing plate (25) is connected with an outer fixing shell (15), the outer fixing shell (15) is connected with an inner conveying shell (16), a pressing belt (17) is arranged on the inner conveying shell (16), the other end of the pressing belt (17) is connected with a pulling plate (18), the end of the pulling plate (18) is connected with a connecting plate (19) through a pin shaft, the other end of the connecting plate (19) is connected with a support frame B (20), a cylinder push rod (21) is fixedly arranged on the lower end face of the support frame B (20), and the telescopic end of the cylinder push rod (21) faces the pulling plate (18); a moving system, the moving system includes a motor (22) arranged on the end face of the support frame B (20), the output end of the motor (22) is fixedly connected with a gear column (23), the gear column (23) is connected with a rack (24) in a meshing manner, the rack (24) is arranged on the inner side face of the fixing block (11) and forms a groove shape; a feeding system, the feeding system includes a support frame A (8) arranged on the upper end face of the conveying cylinder (27), an insertion hole (12) is arranged on the support frame A (8), a detection strip (6) is inserted into the insertion hole (12), a camera (7) is installed at the end of the detection strip (6), support blocks (13) are arranged around the insertion hole (12), rollers (14) are arranged at the upper ends of the support blocks (13), the detection strip (6) is placed on the rollers (14), and the detection strip (6) is connected with a winding drum (10).

2. The detection device for termite nests according to claim 1, wherein: The bracket (3) is of a rectangular strip structure and is hollow inside, the support leg (5) is of a cylindrical structure, locking screws (4) are arranged on the outer side face of the bracket (3), and the locking screws (4) are connected with the bracket (3) in a threaded connection manner. After the locking screws (4) penetrate through the bracket (3), they are in contact connection with the support leg (5).

3. The detection device for termite nests according to claim 2, characterized in that: The horizontal cross-section of the conveying cylinder (27) is of a rectangular structure, the outer side face of the conveying cylinder (27) is fixedly connected with the bottom of the box body (1), and the lower end of the conveying cylinder (27) extends outwards from the bottom of the box body (1).

4. The detection device for termite nests according to claim 3, characterized in that: The outer side face of the fixing block (11) is fixedly connected with the inner side face of the conveying cylinder (27), the length of the fixing block (11) is shorter than that of the conveying cylinder (27), the middle position of the fixing block (11) is designed as a square hole and vertically penetrates through the fixing block (11) to form a channel.

5. The detection device for termite nests according to claim 4, characterized in that: A horizontally arranged fixed plate (25) is fixed on the inner side surface of the fixed block (11). The inner side surface of the fixed plate (25) is connected to an outer fixed shell (15). The outer fixed shell (15) is a cylindrical structure with a through hole (30) and is designed with openings at both ends. A sliding groove (28) is arranged on the inner side surface of the outer fixed shell (15), and the sliding groove (28) is connected to an inner feeding shell (16).

6. The detection device for termite nests according to claim 5, characterized in that: An arc-shaped hole (29) is formed in the inner feeding shell (16). A pressing belt (17) is arranged in the arc-shaped hole (29). One end of the pressing belt (17) is fixedly connected to the inner feeding shell (16). The pressing belt (17) is an elastic sheet, and the other end of the pressing belt (17) is fixedly connected to the inner side surface of a pulling plate (18).

7. The detection device for termite nests according to claim 6, wherein: When the connecting plate (19) is flush with the inner side surface of the inner feeding shell (16) on the inner side surface of the pressing belt (17), it is in an inclined state and faces the cylinder push rod (21).

8. The detection device for termite nests according to claim 7, characterized in that: A through hole (30) along the axial direction is arranged on the outer fixed shell (15), and the through hole (30) penetrates through the wall of the outer fixed shell (15) to provide a moving space for the pulling plate (18). The pulling plate (18) penetrates through the through hole (30) and the arc-shaped hole (29).

9. The detection device for termite nests according to claim 8, wherein: A sliding hole (31) is arranged on the support frame B (20). A circular rod is placed in the hole. Both ends of the circular rod are connected to the fixed block (11) through a frame body and are used for limiting the support frame B (20).

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