High-altitude directional pesticide application device for forest insect pests

Abstract

This invention provides a high-altitude directional pesticide application device for forest tree pests. Multiple sleeves are coaxially connected to form a telescopic rod. A grab assembly is located at the top of the telescopic rod, comprising an upper grab and a lower grab. The upper grab is fixedly mounted at the top of the telescopic rod, and its rear end is rotatably connected to the rear end of the lower grab. A first fork and a second fork are spaced vertically apart at the rear end of the upper grab. The second fork is connected to the top of the telescopic rod via a first elastic element, which drives the upper grab to rotate and close onto the lower grab. A gripping part is located at the lower end of the telescopic rod, featuring a reel assembly and a handle. One end of a rigid rope is fixed to the reel assembly, and the other end passes sequentially around the end of the second fork and a guide assembly before connecting to the handle. The handle drives the first fork to rotate via the rigid rope, causing the upper grab to open relative to the lower grab. This device solves the problems of difficult and inaccurate pesticide application for tall forest trees.

Description

Technical Field

[0001] This utility model relates to the field of forest pest control technology, and in particular to a high-altitude directional pesticide application device for forest pests. Background Technology

[0002] Palm trees are an important component of urban greening and the floriculture industry in my country. In recent years, the red palm weevil has spread rapidly in southern China, posing a serious threat and causing significant losses to the palm industry. The red palm weevil, belonging to the family Cerciidae in the order Coleoptera, is also known as the coconut palm weevil and is a quarantine pest in forestry. Its larvae bore into the trunk, petioles, and rhizomes of the host plant. This insect has three generations per year with overlapping generations. The optimal development temperature is 24-28℃; below 14℃, the egg hatching rate drops sharply. Its damage is insidious; it often enters through the growing point, boring tunnels that cause rot and plant death. Early detection is difficult, and later damage is irreversible. It can cause damage year-round. Currently, there is a lack of mature application methods for controlling the red palm weevil. Traditional chemical pesticide spraying is mainly used, but this method has prominent problems: the pressure of the spraying equipment is insufficient for tall palm trees, resulting in poor spraying effect; inconvenient transportation in rural areas and courtyards makes it difficult for large spraying equipment to enter and prevents high-altitude operations; the larvae bore into the trunk, making it difficult for pesticides to reach them, requiring 5-6 consecutive sprays to completely kill them, and the cost is high and the environment is polluting; the injection of pesticides into tall trees requires a large amount, and drilling damages the tree and affects its appearance; spraying often uses highly toxic and persistent pesticides with poor systemic absorption, making it difficult to reach the insects and polluting the environment; and equipment such as plant protection drones are expensive and difficult to use in daily life.

[0003] Previous studies have shown that drenching and hanging bag methods are effective in controlling the red palm weevil in some infested areas. The hanging bag method offers advantages such as targeted application, no droplet drift, high pesticide utilization, and minimal impact on non-target organisms. However, for tall palm trees, delivering or hanging the bags high in the hollow leaves is difficult. Therefore, developing low-toxicity, fast-acting pesticides and application methods suitable for large-scale control of the red palm weevil is an urgent task. Utility Model Content

[0004] The main purpose of this utility model is to provide a high-altitude directional pesticide application device for forest pests, which solves the problems of difficult and inaccurate pesticide application for tall trees.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a high-altitude directional spraying device for forest pests, wherein multiple sleeves are coaxially connected in sequence to form a telescopic rod, and a grab bucket assembly is provided at the top of the telescopic rod; The grab bucket assembly includes an upper grab bucket and a lower grab bucket. The upper grab bucket is fixedly mounted on the top of the telescopic rod, and the rear end of the upper grab bucket is rotatably connected to the rear end of the lower grab bucket. The upper grab bucket has a first fork and a second fork spaced apart at the rear end. The second fork is connected to the top of the telescopic rod through a first elastic element. The first elastic element drives the upper grab bucket to rotate and cover the lower grab bucket. The lower end of the telescopic pole is equipped with a grip, and the grip is equipped with a reel assembly and a handle; One end of the rigid rope is fixed to the reel assembly, and the other end passes through the end of the second fork and the guide assembly in sequence before being connected to the handle. The handle drives the first fork to rotate through the rigid rope, causing the upper grab bucket to open relative to the lower grab bucket.

[0006] In the preferred embodiment, all sleeves are hollow structures, and the outer diameter of the inner sleeve in adjacent sleeves is matched with the inner diameter of the outer sleeve. Multiple sleeves are nested and fitted together sequentially along the same axis. The top end of the sleeve is provided with a constricted section, and the bottom end is provided with an annular limiting boss. The inner diameter of the constricted section is adapted to the outer diameter of the next-level inner sleeve, and the outer diameter of the annular limiting boss is adapted to the inner diameter of the previous-level outer sleeve. Through the snap-fit ​​cooperation between the constricted section and the annular limiting boss, an axially limiting telescopic structure is formed.

[0007] In the preferred embodiment, the end of the first fork is rotatably connected to the first pulley, and the rotation axis of the first pulley is parallel to the rotation axis of the upper grab bucket.

[0008] In the preferred embodiment, the guide assembly includes a guide wheel and a first guide bracket; The guide wheel is located at the top of the telescopic rod near the grab bucket assembly; The guide wheel is set radially away from the telescopic rod via the first guide bracket, so that the lower end of the guide wheel is higher than the end of the same side of the maximum outer diameter shaft section of the telescopic rod.

[0009] In the preferred embodiment, the spool assembly includes a winding spool and a second guide bracket; The winding wheel is positioned at the upper end of the grip via a second guide bracket; The guide bracket has an axially arranged first guide hole in the middle, and a rigid rope is threaded through the first guide hole.

[0010] In the preferred embodiment, the height of the lower end of the guide wheel is equal to the height of the first guide hole; The height of the end of the first shift fork is greater than the height of the lower end of the guide wheel and the height of the first guide hole.

[0011] In the preferred embodiment, one end of the winding reel's shaft extends out of the second guide bracket and is fixedly connected to the throttle handle.

[0012] In the preferred embodiment, the winding wheel is coaxially provided with a ratchet, one end of which is rotatably connected to the side wall of the second guide bracket. One end of the second elastic element is fixed to the side wall of the second guide bracket, and the other end is connected to the free end of the ratchet, driving the free end of the ratchet to engage in the ratchet tooth groove to limit the rotation of the winding wheel.

[0013] In the preferred embodiment, a handle is provided in the middle of the grip portion, the middle of the handle is rotatably connected to the outer shell of the grip portion, one end extends into the inner cavity of the grip portion, and the other end extends towards the bottom of the grip portion; The second pulley at the top of the part where the hand is inserted into the inner cavity of the grip is rotated and connected. The rigid rope passes through the second guide hole at the top of the grip, goes around the second pulley, and its end is fixed to the rear side of the inner wall of the grip.

[0014] In the preferred embodiment, a third elastic element is also provided inside the grip portion. One end of the third elastic element is fixed to one side of the second pulley of the handle, and the other end is fixed to the rear side of the inner wall of the grip portion, driving the part of the handle inside the grip portion to rotate towards the rear end of the grip portion.

[0015] This invention provides a high-altitude directional pesticide application device for forest pests. Through a telescopic rod structure, it achieves effective access to the canopy layer of tall trees. The telescopic rod employs a multi-stage nested sleeve design, with the top constriction and the bottom annular limiting boss forming an axial limiting structure. This design not only ensures the stability of the rod at any extension length and withstands bending moments during operation, but also reduces the overall weight and provides an internal channel for the deployment of rigid ropes and other components, significantly improving the safety and convenience of high-altitude operations.

[0016] The opening and closing control mechanism of the grab bucket assembly optimizes the accuracy of pesticide application. The grab bucket consists of upper and lower grab buckets hinged together, and is remotely controlled via rigid rope traction. A pulley at the end of the first fork reduces friction loss, and the guide wheel extends radially through the bracket and is raised in height, effectively avoiding interference between the rope and the outer wall of the casing. The coplanar layout of the pulleys and guide holes in the traction path further ensures linear force transmission, allowing the operator to precisely control the opening angle of the grab bucket from the ground, achieving targeted pesticide application within the canopy layer. The automatic reset function of the elastic element ensures the reliability of the grab bucket's closure when not in operation, preventing accidental pesticide spillage.

[0017] The coordinated design of the cable reel assembly and gripping mechanism improves operational efficiency. The cable reel is equipped with a ratchet locking mechanism, using a pawl driven by an elastic element to achieve unidirectional free rope release and reverse self-locking. This accommodates the length adjustment requirements of the telescopic boom while preventing accidental rope retraction during operation. The lever-type handle within the gripping section, combined with a movable pulley structure, converts the operator's pressure on the handle into double the rope traction, maximizing the opening and closing range of the grab within a limited space and reducing operational effort. A third elastic element assists in the automatic handle reset, working in conjunction with the elastic element at the grab end to ensure the device quickly returns to standby mode. The entire control system reduces physical exertion during high-altitude operations and improves operational response speed in complex environments.

[0018] The overall structure takes into account both functionality and practicality, solving the problems of pesticide drift and poor contact killing effect in traditional spraying methods, as well as tree damage and difficulty in bringing large equipment into the field in injection methods. It provides a low-cost, low-pollution, and portable solution for the control of pests in tall trees. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is the overall appearance and structural diagram of this utility model; Figure 2 This is a diagram of the rigid rope installation structure of this utility model; Figure 3 This is a structural diagram of the telescopic rod of this utility model; Figure 4 This is a cross-sectional view of the telescopic rod of this utility model; Figure 5 This is a side view of the grab bucket assembly of this utility model; Figure 6 This is a side view of the reel assembly of this utility model; Figure 7 This is a structural diagram of the ratchet locking mechanism of the thread pulley assembly of this utility model; Figure 8 This is a cross-sectional view of the gripping part of this utility model.

[0020] In the figure: telescopic rod 1; sleeve 101; constricted end 1011; annular limiting boss 1012; grab bucket assembly 2; upper grab bucket 201; first shift fork 2011; second shift fork 2012; lower grab bucket 202; first elastic element 3; gripping part 4; second guide hole 401; spool assembly 5; winding spool 501; second guide bracket 502; first guide hole 5021; throttle 503; ratchet 504; pawl 505; second elastic element 506; handle 6; second pulley 601; rigid rope 7; guide assembly 8; guide wheel 801; first guide bracket 802; first pulley 9; third elastic element 10. Detailed Implementation

[0021] Example 1 like Figure 1-8 As shown, a high-altitude directional pesticide application device for forest pests consists of multiple sleeves 101 coaxially connected to form a telescopic rod 1, and a grab bucket assembly 2 is provided at the top of the telescopic rod 1. The grab bucket assembly 2 includes an upper grab bucket 201 and a lower grab bucket 202. The upper grab bucket 201 is fixedly mounted on the top of the telescopic rod 1, and the rear end of the upper grab bucket 201 is rotatably connected to the rear end of the lower grab bucket 202. The upper grab bucket 201 has a first fork 2011 and a second fork 2012 spaced apart at its rear end. The second fork 2012 is connected to the top of the telescopic rod 1 through a first elastic element 3. The first elastic element 3 drives the upper grab bucket 201 to rotate and cover the lower grab bucket 202. The lower end of the telescopic rod 1 is provided with a grip part 4, and the grip part 4 is provided with a reel assembly 5 and a handle 6; One end of the rigid rope 7 is fixed to the reel assembly 5, and the other end passes through the end of the second fork 2012 and the guide assembly 8 in sequence before being connected to the handle 6. The handle 6 drives the first fork 2011 to rotate through the rigid rope 7, so that the upper grab bucket 201 opens relative to the lower grab bucket 202.

[0022] This application utilizes a telescopic structure, a controllable grab bucket assembly, and a stable traction locking mechanism to achieve targeted pesticide application to high-altitude insect pest areas in forests. The core structure of this device includes a telescopic rod 1, a grab bucket assembly 2, a gripping part 4, a reel assembly 5, a handle 6, and a rigid rope 7. The telescopic rod 1, composed of multiple coaxially connected sleeves 101, is crucial for height adjustment, allowing the operator to reach the canopy layer of tall trees from the ground. The grab bucket assembly 2, located at the top of the telescopic rod, consists of an upper grab bucket 201 and a lower grab bucket 202, their rear ends rotatably connected to form a clamp-like structure for grasping and holding the pesticide packet. A linkage control mechanism located in the gripping part 4 drives the distal grab bucket assembly 2 to deploy the pesticide via the rigid rope 7. The device has a compact overall structure, is easy to operate, and can accurately deliver pesticides to designated locations high in the tree canopy.

[0023] In the preferred embodiment, each level of sleeve 101 is a hollow structure, and the outer diameter of the inner sleeve 101 of adjacent sleeves 101 is adapted to the inner diameter of the outer sleeve 101. Multiple sleeves 101 are nested and fitted together in sequence along the same axis. The top end of the sleeve 101 is provided with a constriction portion 1011 and the bottom end is provided with an annular limiting boss 1012. The inner diameter of the constriction portion 1011 is adapted to the outer diameter of the next-level inner sleeve 101, and the outer diameter of the annular limiting boss 1012 is adapted to the inner diameter of the previous-level outer sleeve 101. Through the snap-fit ​​engagement of the constriction portion 1011 and the annular limiting boss 1012, an axially limiting telescopic structure is formed.

[0024] Each level of sleeve 101 features a hollow design, reducing weight and providing an internal passage for the rigid rope 7 or other possible wiring such as lighting. Adjacent sleeves are precisely fitted with an inner sleeve outer diameter that matches the outer sleeve inner diameter, ensuring smooth extension and retraction without excessive wobbling. The top constriction 1011 and the bottom annular limiting boss 1012 constitute a crucial axial limiting mechanism. When extended, the annular limiting boss 1012 at the bottom of the inner sleeve 101 abuts against the inner edge of the top constriction 1011 of the outer sleeve, preventing it from completely disengaging. When retracted, the top constriction 1011 of the inner sleeve abuts against the annular limiting boss 1012 at the bottom of the next innermost sleeve 101, preventing excessive retraction. This stepped limiting design ensures the telescopic rod remains stable at any length, withstands bending moments during operation, and can safely and reliably extend and retract repeatedly.

[0025] In the preferred embodiment, the end of the first fork 2011 is rotatably connected to the first pulley 9, and the rotation axis of the first pulley 9 is parallel to the rotation axis of the upper grab bucket 201.

[0026] In the preferred embodiment, the guide assembly 8 includes a guide wheel 801 and a first guide bracket 802; The guide wheel 801 is located at the top of the telescopic rod 1 near the grab bucket assembly 2; The guide wheel 801 is arranged radially away from the telescopic rod 1 via the first guide bracket 802, so that the lower end of the guide wheel 801 is higher than the same side end of the maximum outer diameter shaft section of the telescopic rod 1.

[0027] In the preferred embodiment, the spool assembly 5 includes a winding spool 501 and a second guide bracket 502; The winding wheel 501 is mounted on the upper end of the gripping part 4 via the second guide bracket 502; The guide bracket 502 has an axially arranged first guide hole 5021 in the middle, and the rigid rope 7 is passed through the first guide hole 5021.

[0028] In the preferred embodiment, the height of the lower end of the guide wheel 801 is equal to the height of the first guide hole 5021; The height of the end of the first shift fork 2011 is greater than the height of the lower end of the guide wheel 801 and the height of the first guide hole 5021.

[0029] The rotation planes of the first pulley 9, winding wheel 501, and guide wheel 801 are coplanar, and this rotation plane passes through the axis of the telescopic rod 1. The first guide hole 5021 is also located on this rotation plane, ensuring a straight traction path for the rigid rope 7. When the telescopic rod 1 is fully or partially retracted, if the guide wheel 801 is not high enough, the rigid rope 7 that passes over the guide wheel 801 may come into contact with, rub against, or even become entangled with the outer wall of the thicker sleeve 101 below. This can lead to severe wear of the rigid rope 7, operational jamming, increased noise, and may affect the opening and closing angle of the grab assembly 2. By extending the guide wheel 801 outward through the first guide bracket 802 to a sufficiently high position, it is ensured that after the rigid rope 7 exits from the guide wheel 801, its path completely avoids the outer contours of all the sleeves below, forming an unobstructed cable routing channel.

[0030] With the grab bucket closed, the rigid rope 7, which passes around the first pulley 9, forms a downward-sloping path to the guide wheel 801. When the operator presses the handle 6 to pull the rigid rope 7, this inclined rigid rope 7 is straightened and tightened, transmitting the pulling force to the first fork 2011, driving the grab bucket to open. If the height of the end of the first fork 2011 is too low, this rigid rope 7 may be too short or have an improper angle, affecting the effective transmission of force and the opening and closing range of the grab bucket assembly 2. This height difference is an important geometric design to ensure traction effectiveness. The guide wheel 801 is located close to the grab bucket assembly 2, so that when the rigid rope 7 is pulled for the same length, the upper grab bucket 201 has a larger responsive rotation angle, optimizing the force transmission efficiency and reducing unnecessary force loss.

[0031] In the preferred embodiment, one end of the shaft of the winding wheel 501 extends out of the second guide bracket 502 and is fixedly connected to the throttle 503.

[0032] The reel assembly 5 serves as the starting point for fixing the rigid rope 7 and the length adjustment mechanism. The starting end of the rigid rope 7 is reliably fixed to the winding reel 501. In this embodiment, the rope end of the rigid rope 7 is preferably embedded in the reel groove, tightened with a screw, or knotted before embedding. The second guide bracket 502 has an axial first guide hole 5021 in its center. When the rigid rope 7 extends from the winding reel 501 to the top of the telescopic rod 1 and returns to the gripping end 4 via the guide assembly 8, the first guide hole 5021, corresponding to the guide assembly 8, ensures precise constraint of its return path, preventing interference with the portion of the rigid rope 7 extending from the winding reel 501. The edge of the first guide hole 5021 is smoothed to reduce friction during the movement of the rigid rope 7.

[0033] In the preferred embodiment, the winding wheel 501 is coaxially provided with a ratchet 504, one end of the pawl 505 is rotatably connected to the side wall of the second guide bracket 502, one end of the second elastic member 506 is fixed to the side wall of the second guide bracket 502, and the other end is connected to the free end of the pawl 505, driving the free end of the pawl 505 to be engaged in the tooth groove of the ratchet 504, thereby limiting the rotation of the winding wheel 501.

[0034] When it is necessary to extend the telescopic rod 1 to release the rigid rope 7, rotate the handle 503 in one direction. The ratchet 504 will rotate accordingly. The inclined teeth of the pawl 505 will be pushed by the ratchet teeth to overcome the slight elastic force of the second elastic element 506 and lift up. After sliding through one tooth groove, it will fall into the next tooth groove under the action of the elastic force. This process allows the ratchet 504 and the winding wheel 501 to rotate smoothly to release the rope.

[0035] When an external force attempts to pull the rigid rope 7 in the opposite direction, the straight teeth of the pawl 505 will firmly lock into the tooth groove of the ratchet 504, preventing it from rotating. This locking is automatic and continuous. As long as there is no human intervention in the pawl 505, even if the operator releases the throttle 503, the winding reel 501 will not accidentally reverse and rewind the rope due to the tension or gravity of the rigid rope 7.

[0036] When the telescopic rod 1 needs to be shortened and the rope needs to be actively retracted, the operator manually moves the free end of the pawl 505 to overcome the elastic force of the second elastic element 506 and disengage it from the tooth groove of the ratchet 504. At this time, the handle 503 can be freely rotated in the opposite direction to retract the rigid rope. After releasing the pawl 505, it will re-engage into the tooth groove of the ratchet 504 under the action of elastic force, restoring the locked state.

[0037] In the preferred embodiment, the grip part 4 is provided with a handle 6 in the middle, the middle of the handle 6 is rotatably connected to the outer shell of the grip part 4, one end extends into the inner cavity of the grip part 4, and the other end extends towards the bottom of the grip part 4; The handle 6 is inserted into the top of the second pulley 601 of the inner cavity of the grip part 4 and rotated. The rigid rope 7 passes through the second guide hole 401 at the top of the grip part 4, and after passing around the second pulley 601, its end is fixed to the rear side of the inner wall of the grip part 4.

[0038] In a preferred embodiment, a third elastic element 10 is also provided inside the grip portion 4. One end of the third elastic element 10 is fixed to one side of the second pulley 601 of the handle 6, and the other end is fixed to the rear side of the inner wall of the grip portion 4, driving the part of the handle 6 inside the grip portion 4 to rotate toward the rear end of the grip portion 4.

[0039] The handle 6 is rotatably connected to the outer shell of the grip part 4, forming a lever. Its operating end extends towards the bottom of the grip part 4 for the operator to press. The other end, as the functional end, extends into the inner cavity of the grip part 4, and is rotatably connected to the second pulley 601 at the top of this end. The rigid rope 7 is guided from above through the second guide hole 401 and then passes through the grip part 4. The path of the rigid rope 7 in the inner cavity of the grip part 4 is as follows: passing through the second guide hole 401, around the second pulley 601, and its end is fixed to the rear side of the inner wall of the grip part 4.

[0040] This structure makes the second pulley 601 a movable pulley. When the operator presses the operating end of the handle 6, the functional end of the handle 6 rotates downward around its central fulcrum. Since the fixed point remains stationary, the movable pulley is pulled downward. According to the characteristics of the movable pulley, under ideal conditions, the rigid rope 7 will be pulled twice the stroke of the movable pulley. That is, this structure allows the handle 6 to obtain a larger rigid rope 7 within the limited operating space of the grip 4, thereby achieving a sufficient opening angle of the grab assembly 2 with less hand movement.

[0041] When the operator releases the pressing end of handle 6, the restoring force of the third elastic element 10 drives the functional end of handle 6 to rotate back to its initial position. This returns the operating end of handle 6 to its unpressed state. Simultaneously, the reset of the functional end of handle 6 also drives the second pulley 601 back to its original position, stopping the tension on the rigid rope 7. Furthermore, once the rigid rope 7 is released, the first elastic element 3 on the grab assembly 2 will immediately drive the upper grab 201 to close. Therefore, the function of the third elastic element 10 is to ensure that handle 6 automatically resets after release, thus working in conjunction with the first elastic element 3 to quickly and reliably close the grab.

[0042] Specifically, during operation, the user presses the handle 6 to rotate its end toward the grip part 4. The second pulley 601 drives the movable end of the external rigid rope 7 of the telescopic rod 1 to move toward the rear end of the device. Since the other end of the rigid rope 7 is fixed to the reel assembly 5 tensioned at a fixed length, this shortening will cause the first pulley 9 at the end of the first fork 2011, which is wound around the middle of the rigid rope 7, to be pulled backward. Since the ends of the upper grab 201 and the lower grab 202 are hinged, and the end of the first fork 2011 is in a higher position, this traction will drive the first fork 2011 to rotate, thereby forcing the upper grab 201 to open relative to the lower grab 202. This action is used to load drugs or to release drugs after the device is extended. When the user releases handle 6, the second elastic element 10 drives handle 6 to reset, stopping the pull on the rigid rope 7. Simultaneously, the first elastic element 3 drives the upper grab 201 to rotate. Under the combined action of these two sets of elastic elements, the upper grab 201 recloses relative to the lower grab 202, ensuring that the drug does not leak during the extension or positioning of the device. In addition, to lock the rigid rope 7 at a set length for extension and retraction, the device is equipped with a ratchet mechanism; when the length needs to be adjusted, the user can manually move the pawl 505 to release the winding wheel 501 to rotate, thereby winding or unwinding the rigid rope 7.

[0043] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The protection scope of this utility model should be the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. A high-altitude directional pesticide application device for forest pests, characterized in that: Multiple sleeves (101) are coaxially connected in sequence to form a telescopic rod (1), and a grab bucket assembly (2) is provided at the top of the telescopic rod (1). The grab bucket assembly (2) includes an upper grab bucket (201) and a lower grab bucket (202). The upper grab bucket (201) is fixedly installed at the top of the telescopic rod (1), and the rear end of the upper grab bucket (201) is rotatably connected to the rear end of the lower grab bucket (202). The upper grab bucket (201) has a first fork (2011) and a second fork (2012) spaced apart at the rear end. The second fork (2012) is connected to the top of the telescopic rod (1) through a first elastic element (3). The first elastic element (3) drives the upper grab bucket (201) to rotate and cover the lower grab bucket (202). The lower end of the telescopic rod (1) is provided with a grip (4), and the grip (4) is provided with a spool assembly (5) and a handle (6). One end of the rigid rope (7) is fixed to the reel assembly (5), and the other end passes through the end of the second fork (2012) and the guide assembly (8) in sequence before being connected to the handle (6). The handle (6) drives the first fork (2011) to rotate through the rigid rope (7), so that the upper grab (201) opens relative to the lower grab (202).

2. The aerial directional pesticide application device for forest pests according to claim 1, characterized in that: All sleeves (101) are hollow structures. The outer diameter of the inner sleeve (101) of an adjacent sleeve (101) is matched with the inner diameter of the outer sleeve (101). Multiple sleeves (101) are nested and fitted together along the same axis. The top end of the sleeve (101) is provided with a constricted part (1011) and the bottom end is provided with an annular limiting boss (1012). The inner diameter of the constricted part (1011) is adapted to the outer diameter of the next-level inner sleeve (101), and the outer diameter of the annular limiting boss (1012) is adapted to the inner diameter of the previous-level outer sleeve (101). Through the snap-fit ​​cooperation between the constricted part (1011) and the annular limiting boss (1012), an axially limiting telescopic structure is formed.

3. The aerial directional pesticide application device for forest pests according to claim 1, characterized in that: The end of the first fork (2011) is rotatably connected to the first pulley (9), and the rotation axis of the first pulley (9) is parallel to the rotation axis of the upper grab (201).

4. The aerial directional pesticide application device for forest pests according to claim 1, characterized in that: The guide assembly (8) includes a guide wheel (801) and a first guide bracket (802); The guide wheel (801) is located at the top of the telescopic rod (1) near the grab bucket assembly (2); The guide wheel (801) is set radially away from the telescopic rod (1) via the first guide bracket (802), so that the lower end of the guide wheel (801) is higher than the height of the same side end of the maximum outer diameter shaft section of the telescopic rod (1).

5. The aerial directional pesticide application device for forest pests according to claim 1, characterized in that: The spool assembly (5) includes a winding spool (501) and a second guide bracket (502); The winding wheel (501) is located on the upper end of the grip (4) via the second guide bracket (502); The guide bracket (502) has an axially arranged first guide hole (5021) in the middle, and the rigid rope (7) passes through the first guide hole (5021).

6. The aerial directional pesticide application device for forest pests according to claim 5, characterized in that: The height of the lower end of the guide wheel (801) is equal to the height of the first guide hole (5021); The height of the end of the first shift fork (2011) is greater than the height of the lower end of the guide wheel (801) and the height of the first guide hole (5021).

7. The aerial directional pesticide application device for forest pests according to claim 1, characterized in that: One end of the shaft of the winding reel (501) extends out of the second guide bracket (502) and is fixedly connected to the throttle (503).

8. The aerial directional pesticide application device for forest pests according to claim 1, characterized in that: The winding wheel (501) is coaxially provided with a ratchet (504). One end of the pawl (505) is rotatably connected to the side wall of the second guide bracket (502). One end of the second elastic element (506) is fixed to the side wall of the second guide bracket (502), and the other end is connected to the free end of the pawl (505). The free end of the pawl (505) is driven to be locked in the tooth groove of the ratchet (504) to limit the rotation of the winding wheel (501).

9. The aerial directional pesticide application device for forest pests according to claim 1, characterized in that: The grip (4) has a handle (6) in the middle. The handle (6) is rotatably connected to the outer shell of the grip (4). One end extends into the inner cavity of the grip (4), and the other end extends to the bottom of the grip (4). The handle (6) is inserted into the top of the second pulley (601) of the inner cavity of the grip (4) and rotated. The rigid rope (7) passes through the second guide hole (401) at the top of the grip (4), goes around the second pulley (601), and its end is fixed to the rear side of the inner wall of the grip (4).

10. The aerial directional pesticide application device for forest pests according to claim 9, characterized in that: The grip (4) is also provided with a third elastic element (10). One end of the third elastic element (10) is fixed to one side of the second pulley (601) of the handle (6), and the other end is fixed to the rear side of the inner wall of the grip (4), driving the part of the handle (6) inside the grip (4) to rotate toward the rear end of the grip (4).

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