A fruit tree planting young tree fixing and pest control combined structure

Abstract

The present application relates to the technical field of garden seedling planting, in particular to a fruit tree planting sapling fixing and pest control combined structure, which comprises two C-shaped plates, arc-shaped grooves are formed in the upper ends of the two C-shaped plates, and a plurality of fixing mechanisms are equidistantly arranged in the two arc-shaped grooves; the fixing mechanism comprises an electric push rod fixedly connected to the outer side wall of the C-shaped plate, a sliding plate is fixedly connected to the output end of the electric push rod, two first rectangular rods are fixedly connected to the side wall of the sliding plate, and the two first rectangular rods are slidingly connected with the side wall of the C-shaped plate in a penetrating mode. When the pressure of a certain side of the trunk increases due to eccentric thickening, the pressure sensor detects that the pressure exceeds the average pressure, the controller controls the corresponding electric push rod to actively retreat, releases the local high pressure, and prevents the trunk from being injured, and when the pressure of a certain side of the trunk decreases due to slow thickening, the controller controls the corresponding electric push rod to feed, and compensates for the void.

Description

Technical Field

[0001] This invention relates to the field of garden tree seedling planting technology, specifically to a combined structure for fixing and protecting young fruit trees from pests. Background Technology

[0002] Because young trees have shallow root systems, tender stems, and weak wind resistance, they must rely on external support to prevent them from falling over and tilting. At the same time, the stems of young trees are easily eaten by pests and infected by pathogens, so they need to be protected by physical barriers or chemical repellents. According to the search, there are already some combined devices that integrate fixing and protection functions in the existing technology, such as the invention patent "A Durian Tree Anti-Falling Device" with announcement number CN115568377B.

[0003] However, the above technical solution has the following drawbacks when used on saplings: Unable to adapt to the eccentric thickening of the trunk, the cross-section of the young tree trunk often exhibits non-uniform eccentric growth due to environmental factors such as sunlight, wind direction, and gravity. That is, the radial increment in each direction is inconsistent. In the existing technology, when using support components to fix the trunk, the trunk is assumed to be an ideal cylinder with uniform expansion. However, in actual process, the areas with faster local thickening will first exert concentrated pressure on the support components, causing a sharp increase in contact pressure at that point and resulting in strangulation. Meanwhile, areas with slower or no thickening may become detached, losing their supporting effect, leading to necrosis of the trunk bark and failure of the support. Summary of the Invention

[0004] The purpose of this invention is to solve the problems existing in the prior art by proposing a combined structure for fixing and protecting young fruit trees from pests.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A combined structure for fixing and protecting young fruit trees from pests includes two C-shaped plates. Each of the two C-shaped plates has an arc-shaped groove at its upper end, and multiple fixing mechanisms are equidistantly arranged in each of the two arc-shaped grooves. The fixing mechanism includes an electric push rod fixedly connected to the outer wall of the C-shaped plate. A slide plate is fixedly connected to the output end of the electric push rod. Two first rectangular rods are fixedly connected to the side wall of the slide plate, and the two first rectangular rods are slidably connected to the side wall of the C-shaped plate. An arc-shaped retaining plate is elastically connected to the side wall of the slide plate away from the first rectangular rods through multiple first springs. Two second rectangular rods are fixedly connected to the outer wall of the arc-shaped retaining plate, and the side walls of the two second rectangular rods are slidably connected to the side wall of the slide plate. A pressure sensor is embedded in the inner wall of the arc-shaped retaining plate. A pull-wire displacement sensor is fixedly connected to the side wall of the slide plate away from the first rectangular rods. The pull-wire displacement sensor has a pull wire leading out from the outlet and is fixedly connected to the outer wall of the arc-shaped retaining plate. Both the pressure sensor and the pull-wire displacement sensor are electrically connected to their corresponding electric push rods through an external controller.

[0006] Preferably, the inner wall of the arc-shaped plate is embedded with a fiber pad, and the C-shaped plate is provided with a slow-release mechanism, which is used to slowly deliver external liquid medicine into the fiber pad.

[0007] Preferably, the sustained-release mechanism includes a cavity formed in a C-shaped plate, the cavity corresponding to an arc-shaped retaining plate, a liquid absorption frame fixedly connected to the bottom of the cavity, a liquid storage bottle corresponding to the liquid absorption frame fixedly connected to the lower end of the C-shaped plate, the bottom of the liquid absorption frame being fixedly connected to the lower inner wall of the liquid storage bottle through a one-way liquid absorption tube, and the lower inner wall of the liquid absorption frame being fixedly connected to the inner wall of the fiber pad through a one-way liquid outlet tube.

[0008] Preferably, a vertical plate is fixedly connected to the top of the cavity, a T-shaped shaft is rotatably connected through the side wall of the vertical plate, a turntable is fixedly connected to the side wall of the T-shaped shaft near the liquid suction frame, a movable plate is slidably connected to the inner wall of the liquid suction frame, and a drive rod is rotatably connected to the side wall of the turntable away from the axis through a rotating shaft, the lower end of the drive rod being hinged to the upper end of the movable plate.

[0009] Preferably, the cavity is provided with a sound-generating mechanism, which includes a bolt that is rotatably connected through the inner wall of the cavity. A threaded groove is opened on the side wall of a second rectangular rod corresponding to the bolt. The side wall of the bolt is threadedly connected to the inner wall of the threaded groove. An impact protrusion is fixedly connected to the side wall of the bolt located in the arc-shaped groove. An elastic protrusion is fixedly connected to the inner side wall of the arc-shaped groove through a bracket.

[0010] Preferably, a fixing plate is fixedly connected to the side wall of the rifle rod located in the cavity. The side wall of the fixing plate away from the rifle rod has multiple grooves. T-shaped rods are slidably connected to the inner walls of the multiple grooves. The inner walls of the grooves are elastically connected to the corresponding T-shaped rod side walls through multiple second springs.

[0011] Preferably, the side wall of the T-shaped shaft away from the turntable has multiple slots that correspond one-to-one with the multiple T-shaped rods, and the side walls of the multiple T-shaped rods are respectively fitted with the inner walls of the multiple slots.

[0012] Preferably, a micro switch is fixedly installed at the top of the cavity, and the micro switch is electrically connected to its corresponding electric actuator through an external controller.

[0013] Preferably, the lower ends of the two C-shaped plates are rotatably connected to two adjusting support frames, and the side walls of the two C-shaped plates are connected by two connectors.

[0014] Compared with existing technologies, the advantages of this invention are: 1. When the pressure increases on one side of the trunk due to eccentric thickening, the pressure sensor on that side detects that the pressure exceeds the average pressure. The controller then controls the corresponding electric push rod to actively retract, releasing the local high pressure and preventing strangulation. When the pressure decreases on one side of the trunk due to slower thickening, the controller controls the corresponding electric push rod to feed forward, compensating for the gap. This avoids the situation in existing technologies where areas of rapid local thickening of the trunk will first exert concentrated pressure on the support, causing a sharp increase in contact pressure and resulting in strangulation. Meanwhile, areas with slower or no thickening may experience gaping, losing their supporting effect and leading to necrosis of the trunk bark and support failure.

[0015] 2. When the rake bark rotates, it causes the impact protrusion to rotate and periodically impact the elastic protrusion, generating low-frequency sound waves that drive away pests that prefer to gather on the trunk, have phototaxis, and like to eat tender tissues, thus achieving physical pest control as an auxiliary protection.

[0016] 3. When the tree trunk shakes violently in strong winds, the T-shaped rod intermittently touches the micro switch located on the swing path during rotation. After receiving the first trigger signal, the controller immediately enters the wind-resistant mode and controls the corresponding electric push rod to advance a preset small stroke (1-2 mm) towards the tree trunk, which moderately increases the clamping force of the arc-shaped clamping plate on the tree trunk and prevents the tree trunk from coming out of the restraint range during violent shaking. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a combined structure for fixing and pest control in fruit tree planting saplings proposed in this invention. Figure 2 for Figure 1 A schematic diagram of the vertical sectional structure; Figure 3 for Figure 2 Enlarged structural diagram at point A; Figure 4 for Figure 3 Enlarged structural diagram at point B; Figure 5 This is a schematic diagram of the insect control mechanism in a combined structure for fixing and protecting young fruit trees proposed in this invention. Figure 6 This is a schematic diagram of the structure after the T-shaped shaft and T-shaped rod are separated in a combined structure for fixing and pest control of young fruit trees proposed in this invention. Figure 7 for Figure 1 Enlarged schematic diagram of the structure at point C; Figure 8 for Figure 1 A schematic diagram of the structure viewed from below.

[0018] In the diagram: 1. C-shaped plate; 2. Support frame; 3. Arc groove; 4. Electric push rod; 5. Slide plate; 6. First rectangular rod; 7. Second rectangular rod; 8. Arc-shaped clamping plate; 9. First spring; 10. Pressure sensor; 11. Pull-wire displacement sensor; 12. Pull wire; 13. Fiber pad; 14. Cavity; 15. Liquid suction frame; 16. Liquid storage bottle; 17. One-way liquid suction tube; 18. One-way liquid outlet tube; 19. Vertical plate; 20. T-shaped shaft; 21. Moving plate; 22. Drive rod; 23. Rifling rod; 24. Threaded groove; 25. Impact protrusion; 26. Elastic protrusion; 27. Fixed plate; 28. Groove; 29. ​​T-shaped rod; 30. Second spring; 31. Slot; 32. Micro switch; 33. Connector; 34. Turntable. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Reference Figures 1-8 A combined structure for fixing and controlling pests in fruit tree saplings includes two C-shaped plates 1. Each C-shaped plate 1 has two adjustable support frames 2 rotatably connected to its lower end. The adjustable support frames 2 allow for bidirectional adjustment of angle and height, adapting to different ground flatness levels and sapling heights. The sidewalls of the two C-shaped plates 1 are connected by two connectors 33 (e.g., ...). Figure 7 As shown in the figure, it enables the rapid splicing and disassembly of the two C-shaped boards 1, which facilitates the installation and subsequent disassembly of the saplings.

[0021] Both C-shaped plates 1 have arc-shaped grooves 3 on their upper ends. Multiple fixing mechanisms are provided at equal intervals in both arc-shaped grooves 3 to provide multi-point flexible adaptive clamping for the trunk of the sapling, adapting to the eccentric thickening deformation of the trunk.

[0022] The fixing mechanism includes an electric push rod 4 fixedly connected to the outer wall of the C-shaped plate 1. A slide plate 5 is fixedly connected to the output end of the electric push rod 4. Two first rectangular rods 6 are fixedly connected to the side wall of the slide plate 5. The two first rectangular rods 6 are slidably connected to the side wall of the C-shaped plate 1. An arc-shaped clamping plate 8 is elastically connected to the side wall of the slide plate 5 away from the first rectangular rods 6 through multiple first springs 9. Two second rectangular rods 7 are fixedly connected to the outer wall of the arc-shaped clamping plate 8. The side walls of the two second rectangular rods 7 are slidably connected to the side wall of the slide plate 5. A pressure sensor 10 is embedded in the inner wall of the arc-shaped clamping plate 8. The sensing surface of the pressure sensor 10 is in contact with the bark of the tree trunk and is used to detect the clamping pressure between the arc-shaped clamping plate 8 and the tree trunk in real time.

[0023] A wire displacement sensor 11 is fixedly connected to the side wall of the slide plate 5 away from the first rectangular rod 6. The wire 12 of the wire displacement sensor 11 is fixedly connected to the outer wall of the arc-shaped retaining plate 8 from the wire outlet. It is used to detect the elastic expansion and contraction displacement of the arc-shaped retaining plate 8 relative to the slide plate 5 in real time and accurately reflect the local thickening of the tree trunk.

[0024] Both the pressure sensor 10 and the wire displacement sensor 11 are electrically connected to their corresponding electric push rods 4 via an external controller. This controller integrates pressure equalization, growth calculation and wind resistance control functions, and the wind resistance mode has high priority.

[0025] Furthermore, the external controller synchronously collects the values ​​of the pressure sensors 10 at all fixed mechanisms, thereby calculating the average pressure on all the arc-shaped retaining plates 8. Then, it performs PID adjustment on the pressure deviation of each arc-shaped retaining plate 8, controls the corresponding electric push rod 4 to drive the sliding plate 5 and the arc-shaped retaining plate 8 to move radially forward and backward, so that the contact pressure of each arc-shaped retaining plate 8 on the tree trunk tends to be balanced.

[0026] When the pressure increases due to eccentric thickening on one side of the trunk, the pressure sensor 10 on that side detects that the pressure exceeds the average pressure. The controller then controls the corresponding electric push rod 4 to actively retract, releasing the local high pressure and preventing strangulation. When the thickening on one side of the trunk is slower, causing the pressure to drop, the controller controls the corresponding electric push rod 4 to advance, compensating for the gap. Each fixing mechanism operates independently without interfering with the others, achieving adaptive fitting to the eccentric thickening of the trunk. This avoids the situation in existing technologies where the faster thickening of the trunk causes concentrated compression on the support components, resulting in a sharp increase in contact pressure and strangulation, while the slower or no thickening may cause gaping, loss of support, and ultimately, necrosis of the trunk bark and support failure.

[0027] During the activation of the strong wind resistance feed mode, the pressure equalization PID regulation is temporarily frozen to ensure the effectiveness of the wind resistance auxiliary clamping. Normal control is re-engaged after the wind stops and resumes.

[0028] After the two C-shaped plates 1 are installed, the controller records the initial reading L0 of each wire displacement sensor 11 and the initial stroke S0 of each electric push rod 4 as a reference. At the same time, the external controller records the active adjustment stroke S of each electric push rod 4 in real time (positive for feeding towards the trunk and negative for retreating away from the trunk), and collects the current reading L of the wire displacement sensor 11. The reading of the wire displacement sensor 11 is set as the distance of the arc-shaped clamping plate 8 away from the sliding plate 5, and the elongation is positive. The thickening of the trunk will reduce this distance, so the actual growth increment of the trunk △R = -[(L-L0) + (S-S0)].

[0029] This calculation effectively separates the active adjustment action of the electric push rod 4 from the natural growth and pushing amount of the trunk, obtaining the pure true growth amount of the trunk in all directions, and providing accurate data for fruit tree physiological research (such as the growth rate during the fruit expansion period and dormancy period).

[0030] In addition, the external controller performs a moving average filter on the calculated pure growth increment ΔR and uses a dual time window method to distinguish between wind sway and growth. The short time window is used to characterize the real-time position, and the long time window is used to extract the growth trend. Only when the difference in the long time window is continuously positive and exceeds the noise threshold in multiple consecutive sampling periods is it determined to be a valid growth trend. Instantaneous reciprocating fluctuations are identified as wind sway noise and filtered out.

[0031] The inner wall of the arc-shaped retaining plate 8 is embedded with a fiber pad 13. The fiber pad 13 is made of porous flexible water-absorbing fiber material, which has the functions of flexible buffering, liquid adsorption and breathable protection. It can avoid rigid contact that may damage the tree trunk, and at the same time, it can evenly adsorb the insecticide liquid to achieve uniform protection around the tree trunk. The C-shaped plate 1 is equipped with a slow-release mechanism, which is used to slowly deliver the external liquid to the fiber pad 13.

[0032] The slow-release mechanism includes a cavity 14 formed within a C-shaped plate 1, which corresponds to an arc-shaped retaining plate 8. A liquid-absorbing frame 15 is fixedly connected to the bottom of the cavity 14. A storage bottle 16, corresponding to the liquid-absorbing frame 15, is fixedly connected to the lower end of the C-shaped plate 1. The storage bottle 16 stores diluted plant-specific insecticide and antibacterial liquid. The storage bottle 16 is a soft plastic bottle. The bottom of the liquid-absorbing frame 15 is fixedly connected to the lower inner wall of the storage bottle 16 via a one-way liquid-absorbing tube 17. The lower inner wall of the liquid-absorbing frame 15 is fixedly connected to the inner wall of the fiber pad 13 via a one-way liquid-discharge tube 18. Furthermore, a one-way valve is installed in the one-way liquid-absorbing tube 17 to allow only the liquid inside the storage bottle 16 to flow into the liquid-absorbing frame 15, and a one-way valve is installed in the one-way liquid-discharge tube 18 to allow only the liquid inside the liquid-absorbing frame 15 to be transported to the fiber pad 13.

[0033] A vertical plate 19 is fixedly connected to the top of the cavity 14. A T-shaped shaft 20 is rotatably connected through the side wall of the vertical plate 19. A turntable 34 is fixedly connected to the side wall of the T-shaped shaft 20 near the liquid suction frame 15. A movable plate 21 is slidably connected to the inner wall of the liquid suction frame 15. A drive rod 22 is rotatably connected to the side wall of the turntable 34 away from the axis through a rotating shaft. The lower end of the drive rod 22 is hinged to the upper end of the movable plate 21.

[0034] A sound-generating mechanism is provided inside the cavity 14. The sound-generating mechanism includes a boom rod 23 that is rotatably connected to the inner wall of the cavity 14. A threaded groove 24 is opened on the side wall of the second rectangular rod 7 corresponding to the boom rod 23. The side wall of the boom rod 23 is threadedly connected to the inner wall of the threaded groove 24. An impact protrusion 25 is fixedly connected to the side wall of the boom rod 23 located in the arc-shaped groove 3. An elastic protrusion 26 is fixedly connected to the inner side wall of the arc-shaped groove 3 through a bracket. The impact protrusion 25 will periodically impact the elastic protrusion 26 as the boom rod 23 rotates, thereby generating low-frequency sound waves to drive away pests that prefer to gather towards the tree trunk and have phototactic characteristics and like to eat tender tissues, thus achieving physical pest control and auxiliary protection.

[0035] The side wall of the rocker arm 23 located in the cavity 14 is fixedly connected to a fixing plate 27. The side wall of the fixing plate 27 away from the rocker arm 23 has multiple grooves 28. The inner walls of the multiple grooves 28 are slidably connected to T-shaped rods 29. The inner walls of the grooves 28 are elastically connected to the side walls of their corresponding T-shaped rods 29 through multiple second springs 30.

[0036] The side wall of the T-shaped shaft 20 away from the turntable 34 has multiple slots 31 that correspond one-to-one with multiple T-shaped rods 29. The side walls of the multiple T-shaped rods 29 are respectively attached to the inner walls of the multiple slots 31, and the ends of the T-shaped rods 29 can be inserted into the slots 31 to realize the clutch-type linkage transmission between the fixed disk 27 and the T-shaped shaft 20.

[0037] When the tree trunk sways in a light breeze, the two second rectangular rods 7 are slowly moved back to their original position by the arc-shaped retaining plate 8. Under the action of the threaded groove 24, the rocker rod 23 is slowly rotated. At this time, the centrifugal force on the multiple T-shaped rods 29 is much less than the tension of the second spring 30, so that the multiple T-shaped rods 29 remain inserted into the multiple slots 31. At this time, the rotation of the rocker rod 23 is transmitted to the T-shaped shaft 20 through the fixed plate 27 and the T-shaped rods 29, driving the slow-release mechanism to work.

[0038] When the tree trunk encounters a strong wind, it shakes violently. The arc-shaped retaining plate 8 drives the two second rectangular rods 7 to move back to their original position quickly, causing the speed of the rake rod 23 to increase sharply. At this time, the multiple T-shaped rods 29 are subjected to a large centrifugal force, which is sufficient to overcome the tension of the second spring 30. The multiple T-shaped rods 29 are then thrown outward along the multiple grooves 28 and disengaged from the multiple slots 31. At this time, the transmission between the fixed plate 27 and the T-shaped shaft 20 is interrupted, and the slow-release mechanism stops working.

[0039] A micro switch 32 is fixedly installed at the top of the cavity 14. The micro switch 32 is electrically connected to its corresponding electric push rod 4 through an external controller.

[0040] Furthermore, the micro switch 32 is located on the path of multiple T-shaped rods 29. When multiple T-shaped rods 29 are thrown outward under centrifugal force during strong winds, their ends will intermittently touch the micro switch 32 during rotation. At this time, the controller performs time filtering on the signal from the micro switch 32: upon the first trigger, wind-resistant auxiliary feed is immediately executed, that is, the corresponding electric push rod 4 is controlled to advance 1-2mm towards the trunk, moderately increasing the clamping force of the arc-shaped clamping plate 8 on the trunk, and the timing is started; only if no trigger signal is received within 2-5 seconds is the wind stopped, and after the delay, the electric push rod 4 is controlled to return to the original position. The brief no-trigger gap is ignored to prevent frequent mode switching. During the wind-resistant feed, the pressure equalization PID adjustment is temporarily suspended and will be restored after the wind stops and the push rod returns to its original position. After the strong wind, the speed of the lever 23 decreases, and the T-shaped lever 29 retracts to its original position under the action of the second spring 30, disengaging from the micro switch 32. After the external controller confirms that the wind has stopped after a delay, it controls the electric push rod 4 to return to its original position, restoring normal pressure balance closed-loop control.

[0041] It should be noted that there are two possible scenarios when the T-shaped rod 29 retracts to its original position under the action of the second spring 30: the first is that the T-shaped rod 29 is directly inserted into the slot 31, so that the fixing plate 27 is connected to the T-shaped shaft 20; the second is that the side wall of the T-shaped rod 29 is attached to the side wall of the T-shaped shaft 20 and is not directly inserted into the slot 31. Subsequently, the fixing plate 27 rotates slowly, and the T-shaped rod 29 is still inserted into the slot 31 under the elastic force of the second spring 30.

[0042] In this invention, during initial installation, the controller controls each electric push rod 4 to push the sliding plate 5 and the arc-shaped clamping plate 8 towards the tree trunk until the pressure sensor 10 detects the contact pressure. The controller collects the values ​​of all pressure sensors 10, calculates the average pressure as the target value for each point, and then performs PID adjustment on the pressure deviation at each point. The controller independently controls the radial advance and retreat of each electric push rod 4 so that the clamping pressure of all arc-shaped clamping plates 8 on the tree trunk tends to be consistent, achieving multi-point balanced flexible clamping. At this time, the four support frames 2 are fixed to the ground, and the two C-shaped plates 1 are fixedly connected by two connectors 33. During the growth of the tree trunk, if one side thickens faster, the arc-shaped retaining plate 8 on that side will be squeezed and retracted towards the sliding plate 5 by the first spring 9. The pressure sensor 10 detects that the pressure has increased and exceeded the average pressure. The controller controls the electric push rod 4 on that side to actively retract, release the local high pressure, and prevent the tree trunk from being strangled. If one side thickens slower, the pressure will decrease, and the controller will control the electric push rod 4 on that side to feed forward to compensate for the lack of space. When the tree trunk sways slightly in a breeze, the second rectangular rod 7 is slowly moved back to its original position by the arc-shaped retaining plate 8. The second rectangular rod 7 with the threaded groove 24 drives the lever 23 to rotate slowly. At this time, the centrifugal force of the T-shaped rod 29 is much less than the tension of the second spring 30. The T-shaped rod 29 on the fixed plate 27 remains inserted into the slot 31 of the T-shaped shaft 20. The rotation of the lever 23 is transmitted to the T-shaped shaft 20 through the fixed plate 27 and the T-shaped rod 29. The rotating plate 21 is driven to reciprocate within the liquid suction frame 15 by the turntable 34 and the drive rod 22. This causes the liquid in the storage bottle 16 to be pressed into the fiber pad 13 through the one-way suction tube 17, the suction frame 15 and the one-way outlet tube 18. After the fiber pad 13 absorbs the liquid, it forms a uniform liquid protective layer around the tree trunk, achieving slow-release insecticidal and antibacterial effects. When the rake 23 rotates, it drives the impact protrusion 25 to rotate and periodically impacts the elastic protrusion 26, generating low-frequency sound waves to drive away pests that prefer to gather on the trunk, have phototaxis, and like to eat tender tissues, thus achieving physical pest control and auxiliary protection. When the tree trunk shakes violently in a strong wind, the arc-shaped retaining plate 8 drives the second rectangular rod 7 to move back to its original position quickly. At this time, the speed of the auger rod 23 increases sharply, and the T-shaped rod 29 on the fixing plate 27 is subjected to a significant increase in centrifugal force. It overcomes the tension of the second spring 30 and is thrown outward, and disengages from the slot 31 of the T-shaped shaft 20. At this time, the transmission between the fixing plate 27 and the T-shaped shaft 20 is interrupted, and the slow-release mechanism stops working, so as to avoid excessive pumping of liquid during strong winds, which would lead to waste of liquid or excessive moisture in some parts of the tree trunk. When the T-shaped rod 29 is thrown outward, its end intermittently touches the micro switch 32 located on the throwing path during the rotation process. After receiving the first trigger signal, the controller immediately enters the wind-resistant mode and controls the corresponding electric push rod 4 to advance a preset small stroke (1-2 mm) towards the trunk, which moderately enhances the clamping force of the arc-shaped clamping plate 8 on the trunk and prevents the trunk from coming out of the constraint range during violent shaking. In this mode, the pressure equalization PID regulation is temporarily frozen to avoid it offsetting the wind-resistant feeding effect. After the wind stops, the tree trunk swaying weakens, the speed of the rake 23 decreases, the T-shaped rod 29 retracts back to its original position under the action of the second spring 30, and is reinserted into the slot 31. The slow-release mechanism continues to work. After the controller confirms that the wind has stopped after a delay, it returns the electric push rod 4 to its original position, releases the freeze of the pressure equalization PID regulation, and allows the entire mechanism to fully return to normal operation.

[0043] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A combined structure for fixing and controlling pests in fruit tree seedlings, characterized in that, It includes two C-shaped plates, each with an arc-shaped groove at its upper end, and multiple fixing mechanisms are equidistantly arranged in each of the arc-shaped grooves; The fixing mechanism includes an electric push rod fixedly connected to the outer wall of the C-shaped plate. A slide plate is fixedly connected to the output end of the electric push rod. Two first rectangular rods are fixedly connected to the side wall of the slide plate. The two first rectangular rods are slidably connected to the side wall of the C-shaped plate through the slide plate. An arc-shaped retaining plate is elastically connected to the side wall of the slide plate away from the first rectangular rods through multiple first springs. Two second rectangular rods are fixedly connected to the outer wall of the arc-shaped retaining plate. The side walls of the two second rectangular rods are slidably connected to the side wall of the slide plate through the slide plate. A pressure sensor is embedded in the inner wall of the arc-shaped retaining plate. A pull wire displacement sensor is fixedly connected to the side wall of the slide plate away from the first rectangular rods. The pull wire of the pull wire displacement sensor is fixedly connected to the outer wall of the arc-shaped retaining plate through the wire outlet. Both the pressure sensor and the pull wire displacement sensor are electrically connected to their corresponding electric push rods through an external controller.

2. The combined structure for fixing and controlling pests in fruit tree seedlings according to claim 1, characterized in that, The inner wall of the arc-shaped plate is embedded with a fiber pad, and the C-shaped plate is provided with a slow-release mechanism, which is used to slowly deliver external medicine liquid into the fiber pad.

3. The combined structure for fixing and controlling pests in fruit tree seedlings according to claim 2, characterized in that, The sustained-release mechanism includes a cavity formed in a C-shaped plate, the cavity corresponding to an arc-shaped retaining plate, a liquid absorption frame fixedly connected to the bottom of the cavity, a liquid storage bottle corresponding to the liquid absorption frame fixedly connected to the lower end of the C-shaped plate, the bottom of the liquid absorption frame being fixedly connected to the lower inner wall of the liquid storage bottle through a one-way liquid absorption tube, and the lower inner wall of the liquid absorption frame being fixedly connected to the inner wall of the fiber pad through a one-way liquid outlet tube.

4. The combined structure for fixing and controlling pests in fruit tree seedlings according to claim 3, characterized in that, A vertical plate is fixedly connected to the top of the cavity. A T-shaped shaft is rotatably connected through the side wall of the vertical plate. A turntable is fixedly connected to the side wall of the T-shaped shaft near the liquid suction frame. A movable plate is slidably connected to the inner wall of the liquid suction frame. A drive rod is rotatably connected to the side wall of the turntable away from the axis through a rotating shaft. The lower end of the drive rod is hinged to the upper end of the movable plate.

5. The combined structure for fixing and controlling pests in fruit tree seedlings according to claim 4, characterized in that, The cavity is equipped with a sound-generating mechanism, which includes a bolt that is rotatably connected to the inner wall of the cavity. A threaded groove is opened on the side wall of a second rectangular rod corresponding to the bolt. The side wall of the bolt is threadedly connected to the inner wall of the threaded groove. An impact protrusion is fixedly connected to the side wall of the bolt located in the arc-shaped groove. An elastic protrusion is fixedly connected to the inner side wall of the arc-shaped groove through a bracket.

6. The combined structure for fixing and controlling pests in fruit tree planting saplings according to claim 5, characterized in that, The bolt is fixedly connected to a fixing plate on the side wall inside the cavity. The fixing plate has multiple grooves on the side wall away from the bolt. T-shaped rods are slidably connected to the inner walls of the multiple grooves. The inner walls of the grooves are elastically connected to the corresponding T-shaped rod side walls through multiple second springs.

7. The combined structure for fixing and controlling pests in fruit tree seedlings according to claim 6, characterized in that, The T-shaped shaft has multiple slots on its sidewall away from the turntable, each corresponding to one of the multiple T-shaped rods. The sidewalls of the multiple T-shaped rods are respectively fitted to the inner walls of the multiple slots.

8. The combined structure for fixing and controlling pests in fruit tree planting saplings according to claim 3, characterized in that, A micro switch is fixedly installed at the top of the cavity, and the micro switch is electrically connected to its corresponding electric push rod through an external controller.

9. The combined structure for fixing and controlling pests in fruit tree planting saplings according to claim 1, characterized in that, The lower ends of the two C-shaped plates are rotatably connected to two adjusting support frames, and the side walls of the two C-shaped plates are connected by two connectors.

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