Height-adjustable forestry pest control spraying device

Abstract

The utility model belongs to forestry planting technical field especially adjustable height's forestry disease and insect pest prevention and treatment spraying device, aiming at the existing forestry spraying device telescopic rod locking effect is poor, easy to rotate, and medicine pipe is easy to wind and break, and the fixed diameter of spray head passage pipe leads to the problems such as the easy drift of liquid medicine, the device adopts the fixed rod and moving rod of regular hexagon cross section, and the limiting slide block at the bottom end of moving rod prevents relative rotation, moving rod is equipped with locking mechanism, and through electric push rod drive sliding sleeve traction rotating wedge block closely fixed rod inner wall realizes firm locking, spring-like infusion tube is built-in in the inside of the stem, and the rotation joint in the base is cooperated to guarantee the continuity of liquid medicine delivery, and the adjusting mechanism is equipped at the spray head, and the movable block is driven by the traction rope to adjust the center passage pipe diameter of limiting disc, the base is equipped with fixed block and fixed ring with through hole to enhance stability, the device is mainly used for forestry disease and insect pest prevention and treatment spraying operation, and the stability of spraying operation and operation efficiency under different environments are improved.

Description

Technical Field

[0001] This utility model relates to the field of forestry planting technology, and in particular to an adjustable-height forestry pest and disease control spraying device. Background Technology

[0002] In forestry pest and disease control operations, spraying devices are commonly used equipment. These devices typically require height adjustment to accommodate trees of varying heights. However, existing forestry pest and disease control spraying devices still present several problems in practical use:

[0003] In existing forestry pest and disease control spraying devices, the telescopic rods mostly adopt a circular tube sleeve structure. After the height is adjusted, they are fixed by simple locking components, which have poor locking effect and are prone to loosening. In addition, the circular rod is prone to relative rotation during the lifting and lowering process, which causes the nozzle position to shift and affects the accuracy of spraying operations.

[0004] Meanwhile, most of the drug delivery pipes are attached to the outside of the telescopic pole. When the telescopic pole is raised or lowered, the drug delivery pipes are prone to getting tangled with surrounding objects or breaking due to excessive stretching, which cannot guarantee the continuity of drug delivery. The diameter of the drug delivery pipe in the nozzle is fixed, and it is impossible to adjust the concentration of the spray according to the wind in the forest. In windy weather, the atomized drug is easily dispersed, reducing the efficiency of spraying operations and causing environmental pollution.

[0005] To address the aforementioned problems, this utility model document proposes an adjustable-height forestry pest and disease control spraying device. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing forestry spraying devices, such as the telescopic rods being mostly circular tubes, resulting in poor locking and easy rotation; the external structure of the delivery pipe being prone to entanglement and breakage; and the fixed diameter of the nozzle passage pipe causing the sprayed liquid to easily disperse in windy weather. Therefore, this invention proposes an adjustable-height forestry pest and disease control spraying device.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] An adjustable-height forestry pest and disease control spraying device, comprising:

[0009] A fixed rod, wherein a movable rod is slidably connected inside the fixed rod, and the top end of the movable rod slides through the top end of the fixed rod;

[0010] A connecting pipe is provided, which horizontally penetrates the top of the moving rod. The outer wall of the connecting pipe is provided with a liquid inlet located inside the moving rod. Both ends of the connecting pipe are fixedly connected to a spray unit. The spray unit is provided with an adjustment mechanism for adjusting the spray range of the medicine.

[0011] A locking mechanism is provided at a position near the bottom end of the movable rod, and is used to lock the relative position of the movable rod and the fixed rod after the movable rod has moved;

[0012] A base, which is fixedly installed on the bottom of the fixing rod;

[0013] The liquid medicine is delivered to the connecting pipe via the base and sprayed out through the spray unit. The adjustment mechanism adjusts the concentration of the spray by changing the cross-sectional area of ​​the flow channel.

[0014] In one possible design, the locking mechanism includes multiple rotating wedges disposed on the outer wall of the moving rod. These rotating wedges are arranged in pairs, evenly distributed on the outer wall of the moving rod, and rotatably connected to the outer wall via brackets. Each rotating wedge abuts against the inner wall of the fixed rod. A gap is left between adjacent rotating wedges, which are fixedly connected by a connecting rod. A lever is fixedly installed between adjacent rotating wedges. A sliding sleeve is slidably fitted onto the outer wall of the moving rod, located below the rotating wedges. Multiple fixed brackets are fixedly installed on the top of the sliding sleeve, each bracket containing a connecting frame. One end of each connecting frame is hinged to a lever near the moving rod, ensuring that the sliding sleeve can pull the lever via the connecting frame when descending, thereby achieving synchronous rotation of adjacent rotating wedges and ensuring tight contact between the rotating wedges and the inner wall of the fixed rod.

[0015] In one possible design, multiple protrusions are fixedly installed at the corner of the outer wall of the sliding sleeve, and a convex ring is fixedly installed on the outer wall of the moving rod. The convex ring is located above multiple rotating wedge blocks, and an electric push rod is fixedly installed on the top of the convex ring. One end of the push rod of the electric push rod slides through the convex ring and is fixedly connected to the top of the protrusion to realize the lifting and lowering drive of the sliding sleeve.

[0016] In one possible design, the adjusting mechanism includes a spray head fixedly mounted to one end of a connecting pipe. A limiting plate is fixedly mounted on one side of the spray head. A rotating disk is rotatably mounted inside the limiting plate. A fixed disk is fixedly mounted on one side of the limiting plate. Corresponding passages are formed inside the limiting plate, rotating disk, and fixed disk. Multiple sliding grooves are formed inside the limiting plate via a bracket. These grooves are all located off-center from the center of the limiting plate and are evenly distributed. Multiple movable blocks are formed inside the limiting plate. A protruding post is fixedly inserted through one end of each movable block. The movable blocks are located between the rotating disk and the corresponding sliding groove. A limiting groove is formed on one side of the rotating disk. One end of each protruding post is slidably connected to the inner wall of an adjacent sliding groove, and the other end of each protruding post is slidably connected to the inner wall of the limiting groove. When the rotating disk rotates, it can drive the multiple protruding posts to move within the corresponding sliding grooves, thereby achieving synchronous movement of the multiple movable blocks towards and away from each other, and thus adjusting the diameter of the central passage pipe of the limiting plate.

[0017] In one possible design, the adjustment mechanism further includes a fixed cover disposed on one side of the fixed disk, one end of which passes through the fixed disk and is fixedly connected to the rotating disk; a torsion spring is sleeved on the outer wall of the fixed cover, one end of which is fixedly connected to the outer wall of the fixed cover via a spring seat, and the other end of which is fixedly connected to one side of the fixed disk via a spring seat, so as to drive multiple movable blocks to remain in the open state; a traction rope is fixedly installed on the outer wall of the fixed cover, and the other end of which hangs down naturally to complete the traction rotation of the rotating disk.

[0018] In one possible design, the base has a rotary joint inside. The fixed end of the rotary joint passes through the top of the base and extends into the fixed rod. One end of the rotating part of the rotary joint is fixedly connected to an inlet pipe for inputting external medicine. The fixed end of the rotary joint is fixedly connected to an infusion pipe, which is spring-shaped and extends to the top of the moving rod and is fixedly connected to the inlet port on the outer wall of the connecting pipe to complete the delivery of medicine.

[0019] In one possible design, both the fixed rod and the movable rod have regular hexagonal cross-sections, thus preventing relative rotation between them. A limiting slider is fixedly sleeved at the bottom end of the movable rod, and the outer wall of the limiting slider is slidably connected to the inner wall of the fixed rod to ensure the stability of the sliding adjustment between the fixed rod and the movable rod.

[0020] In one possible design, two fixing posts are fixedly installed on the outer wall of the fixing rod. The two fixing posts are used to bind the corresponding traction ropes to fix the degree of tension of the traction ropes.

[0021] In one possible design, multiple fixing blocks are fixedly installed at the bottom of the base, and each of the fixing blocks has through holes for inserting pins; multiple fixing rings are fixedly installed on the outer wall of the fixing rod for connecting with external traction ropes to assist in fixing the device in a standing position.

[0022] In this application, when using the device, the first step is to fix the device and place it in the forestry area where pest and disease control operations need to be carried out. Multiple fixing blocks at the bottom of the base can be fixed to the ground by inserting pins. Additionally, multiple fixing rings on the outer wall of the fixing rod can be connected to external traction ropes to further assist in fixing the device, prevent the device from tipping over during spraying operations, and ensure overall stability.

[0023] When the spray height needs to be adjusted, the drive electric actuator inside the fixed rod can be activated. The drive electric actuator can push the moving rod to complete the corresponding raising and lowering. When the moving rod is raised or lowered to the appropriate position, multiple electric actuators are activated by the built-in controller. The extension of the actuators pushes the sliding sleeve downward along the outer wall of the moving rod. During the movement of the sliding sleeve, the lever is pulled by the fixed bracket and connecting frame, causing multiple sets of rotating wedge blocks to rotate around the bracket connected to the moving rod. One side of the multiple rotating wedge blocks will rotate to be in close contact with the inner wall of the fixed rod and continuously engage in the corresponding abutment, thereby achieving the locking and positioning between the fixed rod and the moving rod. The cross-sections of both the fixed rod and the moving rod are regular hexagonal, and with the limiting slider at the bottom of the moving rod, it can be ensured that the fixed rod and the moving rod can slide stably without relative rotation.

[0024] During spraying operations, external pesticide solution is input through the inlet pipe, which is connected to the rotating part of the rotary joint. The pesticide solution enters the spring-shaped delivery pipe through the fixed end of the rotary joint. The delivery pipe can extend and retract with the raising and lowering of the moving rod, always maintaining the continuity of pesticide delivery, and finally delivering the pesticide solution to the connecting pipe at the top of the moving rod.

[0025] When adjusting the spray range, pull the traction rope. The traction rope drives the fixed cover to rotate, and the fixed cover simultaneously drives the rotating disk to rotate inside the limiting disk. During the rotation of the rotating disk, the limiting groove on one side drives multiple protrusions to slide along the sliding groove on the limiting disk. The protrusions drive the movable blocks to move synchronously, and the multiple movable blocks move closer to each other, thereby reducing the diameter of the central passage of the limiting disk, allowing the pesticide to be sprayed more concentratedly and avoiding the atomization of the pesticide spraying due to strong winds. Conversely, after releasing the traction rope, the elastic restoring force of the torsion spring drives the fixed cover and rotating disk to reset, allowing the movable blocks to return to their initial positions, ensuring the uniformity of the spray range and spray effect. After the spray range is adjusted, the traction rope can be tied to the fixed rod on the outer wall of the fixed rod to fix the tension of the traction rope and keep the adjusted spray range stable. The spray heads at both ends of the connecting pipe spray the pesticide in the connecting pipe, which can complete the pest and disease control spraying operation in the forestry area.

[0026] Beneficial effects: In this utility model, the adjustable height forestry pest and disease control spraying device features a fixed rod and a movable rod with a regular hexagonal cross-section design. Combined with a limiting slider at the bottom of the movable rod, this effectively prevents relative rotation between the movable rod and the fixed rod during lifting and lowering, ensuring the nozzle position remains accurate. The locking mechanism, driven by an electric push rod, moves the sliding sleeve, pulling multiple sets of rotating wedges to rotate synchronously and press tightly against the inner wall of the fixed rod, achieving a stable lock between the movable rod and the fixed rod. This solves the problems of poor locking effect and easy loosening in existing devices, ensuring that the spray height remains consistently and effectively stable after adjustment.

[0027] In this utility model, the adjustable height forestry pest and disease control spraying device has a spring-shaped infusion tube built into the pole body. It works with the rotary joint in the base to complete the delivery of the medicine. The infusion tube can freely extend and retract with the raising and lowering of the pole, which completely avoids the problems of traditional external medicine infusion tubes being easily entangled with surrounding objects and breaking due to excessive stretching. It always maintains the smooth delivery of medicine and will not affect the normal operation of spraying due to the raising and lowering of the pole body.

[0028] In this invention, an adjustable-height forestry pest and disease control spraying device can drive a rotating disc to rotate by pulling or releasing the traction rope. This, in turn, drives the movable block to adjust the diameter of the central passage of the limiting disc, allowing for flexible adjustment of the concentration of the sprayed pesticide according to the wind conditions in the forest. In windy weather, the passage diameter is reduced to concentrate the sprayed pesticide, reducing waste and environmental pollution caused by pesticide drift. When there is no wind, releasing the traction rope resets the torsion spring drive component, ensuring uniform spraying range and effect. Furthermore, the traction rope can be fixed to a fixed post to maintain the stability of the adjusted spraying range, thus improving the efficiency of spraying operations in different environments.

[0029] In this utility model, the adjustable height forestry pest and disease control spraying device has a base fixing structure that enhances the overall stability of the device. The bottom of the base is provided with a fixing block with a through hole, which can be fixed to the ground by inserting a pin. It is connected to the external traction rope by the fixing ring on the outer wall of the fixing rod, forming a multi-fixing structure. This solves the problem of the existing device having a single fixing method and being easy to tip over during spraying operations, and ensures the stability of the device throughout the entire spraying operation.

[0030] In this invention, the forestry spraying device uses a hexagonal rod body with a limiting slider to prevent relative rotation, and a wedge-shaped locking mechanism to securely lock the rod body; the built-in spring infusion tube with a rotary joint prevents the infusion tube from tangling and breaking, ensuring smooth delivery of the liquid; at the same time, the diameter of the nozzle passage can be adjusted by a traction rope to adapt to wind strength and adjust the spray concentration, reducing liquid dispersion; the multiple fixing structures of the base effectively prevent tipping, improving the stability of the device and the efficiency of spraying operations in different environments. Attached Figure Description

[0031] Figure 1 This is a three-dimensional structural diagram of an adjustable-height forest pest and disease control spraying device proposed in this utility model.

[0032] Figure 2 This is a schematic diagram of the base structure of an adjustable-height forest pest and disease control spraying device proposed in this utility model;

[0033] Figure 3 This is a schematic diagram of the locking mechanism of an adjustable-height forest pest and disease control spraying device proposed in this utility model;

[0034] Figure 4 This is a schematic diagram of the rotating wedge block installation structure of an adjustable-height forest pest and disease control spraying device proposed in this utility model;

[0035] Figure 5 This is a schematic diagram of the connecting pipe installation structure of an adjustable-height forest pest and disease control spraying device proposed in this utility model;

[0036] Figure 6 This is a schematic diagram of the spray section structure of an adjustable-height forest pest and disease control spraying device proposed in this utility model.

[0037] In the diagram: 1. Fixed rod; 2. Moving rod; 3. Base; 4. Fixed block; 5. Rotary joint; 6. Inlet pipe; 7. Infusion pipe; 8. Limiting slider; 9. Sliding sleeve; 10. Protrusion; 11. Electric push rod; 12. Rotating wedge block; 13. Toggle lever; 14. Fixed bracket; 15. Connecting frame; 16. Connecting pipe; 17. Spray head; 18. Limiting plate; 19. Slide groove; 20. Movable block; 21. Protruding column; 22. Rotating disk; 23. Limiting groove; 24. Fixed plate; 25. Fixed cover; 26. Traction rope; 27. Torsion spring; 28. Fixed column; 29. ​​Fixed ring. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0039] In one embodiment: Refer to Figure 1-6 A spraying device includes: a fixed rod 1, a movable rod 2, a base 3, a connecting pipe 16, a locking mechanism, an adjusting mechanism, and related auxiliary components.

[0040] In this embodiment, the fixed rod 1 is a hollow structure with a regular hexagonal cross-section. The movable rod 2 is slidably installed inside the fixed rod 1, with its top end sliding through the top of the fixed rod 1. It also adopts a regular hexagonal cross-section design to ensure that there is no relative rotation between the two. A limiting slider 8 is fixedly sleeved at the bottom of the movable rod 2. The outer wall of the limiting slider 8 is slidably connected to the inner wall of the fixed rod 1 to ensure the stability of the sliding adjustment. A drive electric actuator can be installed on the inner wall of the fixed rod 1. The end of the drive electric actuator can be fixedly connected to the bottom of the movable rod 2 to complete the electric drive lifting of the movable rod 2.

[0041] In this embodiment, the base 3 is fixedly installed at the bottom of the fixed rod 1, and a rotary joint 5 is provided inside it. The fixed end of the rotary joint 5 is fixedly inserted through the top of the base 3 and extends into the fixed rod 1. One end of the rotating part is connected to the inlet pipe 6 for inputting external medicine liquid; the fixed end is connected to the infusion pipe 7, which is spring-shaped, and the other end extends to the top of the moving rod 2 and is fixedly connected to the inlet interface on the outer wall of the connecting pipe 16 to realize the delivery of medicine liquid.

[0042] In this embodiment, the connecting pipe 16 horizontally penetrates the moving rod 2, and an inlet port is opened on its outer wall. The inlet port is located inside the moving rod 2. Spraying parts are fixedly installed at both ends of the connecting pipe 16. An adjustment mechanism is provided in the spraying part to adjust the size of the spraying range of the medicine. Specifically, the adjustment mechanism includes a spray head 17 fixedly installed at one end of the connecting pipe 16. A limiting plate 18 is fixedly installed on one side of the spray head 17. A rotating plate 22 is rotatably installed inside the limiting plate 18, and a fixed plate 24 is fixedly installed on one side. The limiting plate 18, rotating plate 22, and fixed plate 24 all have corresponding passages inside. The limiting plate 18 has multiple sliding grooves 19 inside through a bracket. The sliding grooves 19 are set at positions off-center and are evenly distributed. The limiting plate 18 has multiple movable blocks 20 inside. A through protrusion 21 is fixed near one end of each movable block 20. The movable block 20 is located between the rotating plate 22 and the corresponding sliding groove 19. A limiting groove 23 is opened on one side of the rotating plate 22. One end of the protrusion 21 is slidably connected to the inner wall of the adjacent sliding groove 19, and the other end is slidably connected to the inner wall of the limiting groove 23. When the rotating plate 22 rotates, it can drive multiple protrusions 21 to move in the corresponding sliding grooves 19 through the limiting groove 23, so as to realize the synchronous approach and departure of multiple movable blocks 20, thereby adjusting the diameter of the central passage of the limiting plate 18.

[0043] In this embodiment, a locking mechanism is located near the bottom of the moving rod 2, used to position the moving rod 2 relative to the fixed rod 1 after it moves. The locking mechanism includes multiple rotating wedge blocks 12 disposed on the outer wall of the moving rod 2. The multiple rotating wedge blocks 12 are arranged in pairs and evenly distributed on the outer wall of the moving rod 2. They are rotatably connected to the outer wall of the moving rod 2 through brackets and are all in abutting against the inner wall of the fixed rod 1. A gap is left between two adjacent rotating wedge blocks 12. They are fixedly connected by a connecting rod and a lever 13 is fixedly installed. A sliding sleeve 9 is slidably sleeved on the outer wall of the moving rod 2, located below the multiple rotating wedge blocks 12. Multiple fixed brackets 14 are fixedly installed on the top of the sliding sleeve 9. A connecting frame 15 is hinged inside each fixed bracket 14. One end of the connecting frame 15 is hinged to the lever 13 near the side of the moving rod 2. When the sliding sleeve 9 descends, the lever 13 is pulled by the connecting frame 15, so that the adjacent rotating wedge blocks 12 rotate synchronously and achieve tight contact with the inner wall of the fixed rod 1.

[0044] This application can be used in the field of forestry planting technology, or in other fields applicable to this application.

[0045] In another embodiment: Reference Figure 1 , 2 4, 6, An adjustable-height forestry pest and disease control spraying device, applied to the field of forestry planting technology; the structure of this embodiment is basically the same as the aforementioned embodiments, the difference being:

[0046] In this embodiment, the adjustment mechanism also includes a fixed cover 25 disposed on one side of the fixed disk 24. One end of the fixed cover 25 passes through the fixed disk 24 and is fixedly connected to the rotating disk 22. A torsion spring 27 is sleeved on the outer wall of the fixed cover 25. One end of the torsion spring 27 is fixedly connected to the outer wall of the fixed cover 25 through a spring seat, and the other end is fixedly connected to one side of the fixed disk 24 through a spring seat, so that the multiple movable blocks 20 are always in the open state. A traction rope 26 is fixedly installed on the outer wall of the fixed cover 25. The other end of the traction rope 26 hangs down naturally. The rotating disk 22 can be rotated by pulling the traction rope 26. Two fixed posts 28 are fixedly installed on the outer wall of the fixed rod 1 for binding the traction rope 26 to fix the degree of tension of the traction rope 26.

[0047] In this embodiment, multiple protrusions 10 are fixedly installed at the corner of the outer wall of the sliding sleeve 9, and a convex ring is fixedly installed on the outer wall of the moving rod 2. The convex ring is located above multiple rotating wedge blocks 12, and an electric push rod 11 is fixedly installed on the top of the convex ring. One end of the push rod of the electric push rod 11 slides through the convex ring and is fixedly connected to the top of the protrusion 10, which can drive the sliding sleeve 9 to complete the lifting and lowering. At least three protrusions 10 and electric push rods 11 are provided to ensure stable driving of the sliding sleeve 9.

[0048] In this embodiment, multiple fixing blocks 4 are fixedly installed at the bottom of the base 3. Each fixing block 4 has a through hole inside, which makes it easy to insert pins to fix the equipment to the ground. Multiple fixing rings 29 are also fixedly installed on the outer wall of the fixing rod 1, which can be connected to external traction fixing ropes to assist the device in standing and fixing.

[0049] In this embodiment, anti-slip surfaces are provided on both sides of the multiple rotating wedge blocks 12 to ensure a good anti-slip effect when they are in close contact with the inner wall of the fixed rod 1, which can further enhance the locking and positioning effect between the fixed rod 1 and the moving rod 2.

[0050] However, as is well known to those skilled in the art, the working principle and wiring method of the electric actuator 11 are conventional means or common knowledge, and will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0051] The working principle and usage process of this technical solution are as follows: When using it, first complete the fixing operation of the device and place the device in the forestry area where pest and disease control operations need to be carried out. The multiple fixing blocks 4 at the bottom of the base 3 can be fixed to the ground by inserting pins. At the same time, multiple fixing rings 29 on the outer wall of the fixing rod 1 can be connected to external traction ropes to further assist in fixing the device, prevent the device from tipping over during spraying operations, and ensure the overall stability of use.

[0052] When the spray height needs to be adjusted, the drive electric actuator installed inside the fixed rod 1 can be activated. The drive electric actuator can push the moving rod 2 to complete the corresponding lifting and lowering. When the moving rod 2 is raised or lowered to the appropriate position, multiple electric actuators 11 are activated by the built-in controller. The extension of the actuators of the multiple electric actuators 11 can push the sliding sleeve 9 to move downward along the outer wall of the moving rod 2. During the movement of the sliding sleeve 9, the lever 13 is pulled by the fixed bracket 14 and the connecting bracket 15, so that multiple sets of rotating wedge blocks 12 rotate around the bracket connected to the moving rod 2. One side of the multiple rotating wedge blocks 12 will rotate to be close to the inner wall of the fixed rod 1 and continuously perform corresponding abutment cooperation, so as to achieve locking and positioning between the fixed rod 1 and the moving rod 2. The cross-sections of the fixed rod 1 and the moving rod 2 are both regular hexagons, and with the limiting slider 8 at the bottom of the moving rod 2, it can be ensured that the fixed rod 1 and the moving rod 2 can slide stably and will not rotate relative to each other.

[0053] During spraying operations, external liquid medicine is input through inlet pipe 6, which is connected to the rotating part of rotary joint 5. The liquid medicine enters the spring-shaped delivery pipe 7 through the fixed end of rotary joint 5. Delivery pipe 7 can extend and retract with the raising and lowering of moving rod 2, always maintaining the continuity of liquid medicine delivery, and finally delivering the liquid medicine to the connecting pipe 16 at the top of moving rod 2.

[0054] When it is necessary to adjust the spray range of the liquid medicine, pull the traction rope 26. The traction rope 26 drives the fixed cover 25 to rotate. The fixed cover 25 simultaneously drives the rotating disk 22 to rotate inside the limiting disk 18. During the rotation of the rotating disk 22, the limiting groove 23 on one side drives multiple protrusions 21 to slide along the sliding groove 19 on the limiting disk 18. The protrusions 21 drive the movable blocks 20 to move synchronously. The multiple movable blocks 20 move closer to each other, thereby reducing the diameter of the central passage of the limiting disk 18, allowing the liquid medicine to be sprayed more concentratedly and avoiding the impact of strong winds on the liquid medicine spray. The spray is atomized; conversely, after the traction rope 26 is released, the elastic restoring force of the torsion spring 27 drives the fixed cover 25 and the rotating disk 22 to reset, so that the movable block 20 returns to the initial position, ensuring the uniformity of the spray range and spray effect; after the spray range is adjusted, the traction rope 26 can be tied to the fixed rod 1 on the outer wall of the fixed rod 1 to fix the pulling degree of the traction rope 26 and keep the adjusted spray range stable; the spray heads 17 at both ends of the connecting pipe 16 spray out the liquid medicine in the connecting pipe 16, which can complete the pest and disease control spraying operation in the forestry area.

[0055] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0056] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A height-adjustable forestry pest and disease control spraying device, characterized in that, include: A fixed rod (1) is slidably connected to a movable rod (2) inside the fixed rod (1), and the top end of the movable rod (2) slides through the top end of the fixed rod (1); A connecting pipe (16) is horizontally penetrating the top of the moving rod (2). The outer wall of the connecting pipe (16) is provided with a liquid inlet located inside the moving rod (2). Both ends of the connecting pipe (16) are fixedly connected to a spray section. The spray section is provided with an adjustment mechanism for adjusting the spray range of the liquid. A locking mechanism is provided at the position of the moving rod (2) near the bottom end, and is used to lock the relative position of the moving rod (2) and the fixed rod (1) after the moving rod (2) moves; The base (3) is fixedly installed on the bottom of the fixing rod (1); The liquid medicine is transported to the connecting pipe (16) via the base (3) and sprayed out through the spray section. The adjustment mechanism adjusts the concentration of the spray by changing the cross-sectional area of ​​the flow channel.

2. The adjustable-height forestry pest and disease control spraying device according to claim 1, characterized in that, The locking mechanism includes multiple rotating wedge blocks (12) disposed on the outer wall of the moving rod (2). The multiple rotating wedge blocks (12) are arranged in pairs, and the multiple sets of rotating wedge blocks (12) are evenly distributed on the outer wall of the moving rod (2) and rotatably connected to the outer wall of the moving rod (2) through a bracket. The multiple rotating wedge blocks (12) are all in abutting and cooperating with the inner wall of the fixed rod (1). There is a gap between two adjacent rotating wedge blocks (12), and they are fixedly connected by a connecting rod. A lever (13) is fixedly installed between two adjacent rotating wedge blocks (12). The outer wall of the moving rod (2) is slidably sleeved with a lever (13). A sliding sleeve (9) is located below multiple rotating wedges (12). Multiple fixed brackets (14) are fixedly installed on the top of the sliding sleeve (9). A connecting frame (15) is hinged inside each of the multiple fixed brackets (14). One end of each of the multiple connecting frames (15) is hinged to a lever (13) near the moving rod (2) to ensure that the sliding sleeve (9) can pull the lever (13) through the connecting frame (15) when it descends, thereby completing the synchronous rotation of adjacent rotating wedges (12) to achieve tight contact between multiple rotating wedges (12) and the inner wall of the fixed rod (1).

3. The adjustable-height forestry pest and disease control spraying device according to claim 2, characterized in that, Multiple protrusions (10) are fixedly installed at the corner of the outer wall of the sliding sleeve (9). A convex ring is fixedly installed on the outer wall of the moving rod (2). The convex ring is located above multiple rotating wedge blocks (12). An electric push rod (11) is fixedly installed on the top of the convex ring. One end of the push rod of the electric push rod (11) slides through the convex ring and is fixedly connected to the top of the protrusion (10) to realize the lifting and lowering drive of the sliding sleeve (9).

4. The adjustable-height forestry pest and disease control spraying device according to claim 1, characterized in that, The adjusting mechanism includes a spray head (17) fixedly installed at one end of a connecting pipe (16). A limiting plate (18) is fixedly installed on one side of the spray head (17). A rotating plate (22) is rotatably installed inside the limiting plate (18). A fixed plate (24) is fixedly installed on one side of the limiting plate (18). Corresponding passages are opened inside the limiting plate (18), the rotating plate (22), and the fixed plate (24). Multiple sliding grooves (19) are opened inside the limiting plate (18) through a bracket. The multiple sliding grooves (19) are all set at positions off-center from the center of the limiting plate (18), and the multiple sliding grooves (19) are evenly distributed. Multiple movable blocks are provided inside the limiting plate (18). (20) Each of the multiple movable blocks (20) has a protruding post (21) fixedly inserted at one end. The multiple movable blocks (20) are located between the rotating disk (22) and the corresponding slide groove (19). A limiting groove (23) is opened on one side of the rotating disk (22). One end of each of the multiple protruding posts (21) is slidably connected to the inner wall of the adjacent slide groove (19), and the other end of each of the multiple protruding posts (21) is slidably connected to the inner wall of the limiting groove (23). When the rotating disk (22) rotates, it can drive the multiple protruding posts (21) to move in the corresponding slide groove (19), thereby realizing the synchronous approach and departure of the multiple movable blocks (20), and thus realizing the adjustment of the central passage diameter of the limiting disk (18).

5. The adjustable-height forestry pest and disease control spraying device according to claim 4, characterized in that, The adjustment mechanism also includes a fixed cover (25) disposed on one side of the fixed disk (24). One end of the fixed cover (25) passes through the fixed disk (24) and is fixedly connected to the rotating disk (22). A torsion spring (27) is sleeved on the outer wall of the fixed cover (25). One end of the torsion spring (27) is fixedly connected to the outer wall of the fixed cover (25) through a spring seat, and the other end of the torsion spring (27) is fixedly connected to one side of the fixed disk (24) through a spring seat, so as to drive multiple movable blocks (20) to remain in the open state. A traction rope (26) is fixedly installed on the outer wall of the fixed cover (25). The other end of the traction rope (26) hangs down naturally to complete the traction rotation of the rotating disk (22).

6. The adjustable-height forestry pest and disease control spraying device according to claim 1, characterized in that, The base (3) is provided with a rotary joint (5) inside. The fixed end of the rotary joint (5) is fixedly connected through the top of the base (3) and extends into the fixed rod (1). One end of the rotating part of the rotary joint (5) is fixedly connected to an inlet pipe (6), which is used to complete the input of external medicine. The fixed end of the rotary joint (5) is fixedly connected to an infusion pipe (7). The infusion pipe (7) is spring-shaped, and its other end extends to the top of the moving rod (2) and is fixedly connected to the inlet interface on the outer wall of the connecting pipe (16) to complete the delivery of medicine.

7. The adjustable-height forestry pest and disease control spraying device according to claim 1, characterized in that, The cross-sections of the fixed rod (1) and the moving rod (2) are both regular hexagons, which prevents relative rotation between the fixed rod (1) and the moving rod (2). The bottom end of the moving rod (2) is fixedly fitted with a limiting slider (8), and the outer wall of the limiting slider (8) is slidably connected to the inner wall of the fixed rod (1) to ensure the stability of the sliding adjustment between the fixed rod (1) and the moving rod (2).

8. The adjustable-height forestry pest and disease control spraying device according to claim 5, characterized in that, Two fixing posts (28) are fixedly installed on the outer wall of the fixing rod (1). The two fixing posts (28) are used to tie the corresponding traction ropes (26) to fix the degree of tension of the traction ropes (26).

9. The adjustable-height forestry pest and disease control spraying device according to claim 1, characterized in that, The base (3) has multiple fixing blocks (4) fixedly installed at its bottom. Each of the fixing blocks (4) has through holes for inserting pins. The outer wall of the fixing rod (1) has multiple fixing rings (29) fixedly installed, which are used to connect with external traction fixing ropes to assist in the standing and fixing of the device.

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