Tree insecticide spraying device

Abstract

The application provides a tree insecticide spraying device, which is characterized by comprising a walking mechanism, two symmetrical spraying units arranged on the walking mechanism, and a spraying assembly. The spraying assembly comprises multiple spraying parts, so that the device can move to the position of the tree to be sprayed and work. When the two spraying units move synchronously inward from the two sides of the tree trunk, the multiple spraying parts gradually adhere to the outer wall of the tree trunk and form a nearly annular spraying belt around the tree trunk, so that the pesticide solution can act on multiple areas around the tree trunk at the same time, thereby increasing the spraying coverage. At the same time, the multiple spraying parts can be self-adaptively adjusted according to the contour of the outer wall of the tree trunk and the change of the tree diameter at different heights, so that the spraying units can be well adhered to the surface of the tree trunk at different height positions, thereby adapting to different specifications of trees and the natural taper structure of the tree trunk and improving the adaptability of the device to different working environments.

Description

Technical Field

[0001] This invention relates to the field of tree pest control, specifically to a tree pest control spraying device. Background Technology

[0002] Tree disease and pest control is an important part of garden maintenance and forestry management. Common methods include foliar spraying, trunk smearing, and internal application of pesticides. Among these, trunk spraying / smearing technology is widely used in the management of urban street trees and fruit trees because it can directly target the activity areas of trunk borers and hidden pests.

[0003] Current methods of tree trunk spraying typically rely on manual handheld spray guns or simple mechanical spraying equipment to locally spray or circumferentially coat the outer wall of the tree trunk, allowing the solution to adhere to the trunk surface and form a protective layer. However, due to the common differences in tree diameter and the natural tapering characteristic of trees gradually decreasing in diameter from bottom to top during actual operations, the outer contour dimensions of the trunk at different heights are often inconsistent, and the trunk surface may also have unevenness or local irregular structures.

[0004] Under the above circumstances, existing spraying methods usually cannot achieve synchronous and uniform coverage of the tree trunk circumference, and are prone to problems such as fixed spraying angle, incomplete coverage or local missed spraying, especially in the back side of the tree trunk and concave areas where it is difficult to obtain effective pesticide adhesion.

[0005] Therefore, how to provide a spraying structure that can adapt to different tree diameters and trunk taper variations and achieve relatively uniform circumferential coverage of the trunk has become a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0006] In order to solve the problems of existing tree trunk spraying methods being unable to adapt to different tree diameters and trunk taper variations, uneven circumferential coverage, and easy local missed spraying, this invention provides a tree insect repellent spraying device.

[0007] The present invention solves the above-mentioned technical problems through the following technical solutions: The present invention provides a tree insect repellent spraying device, including a walking mechanism, a spraying component on the walking mechanism, and a conveying mechanism for conveying the liquid pesticide on the walking mechanism. The conveying mechanism is used to convey the liquid pesticide to the spraying component and spray it out. The spraying assembly includes two symmetrically arranged spraying units, each with multiple spraying parts. The two spraying units located on the outer periphery of the tree trunk to be sprayed move synchronously toward the trunk, and during the movement, the multiple spraying parts adaptively abut against the outer wall of the trunk, forming a near-ring structure spraying band along the outer periphery of the trunk.

[0008] This invention utilizes two symmetrically arranged spraying units on a walking mechanism, enabling the device to move around the tree trunk for spraying operations. As the two spraying units move towards the trunk, multiple spraying heads adaptively conform to the outer wall of the trunk, forming a near-circular spraying band along the trunk's perimeter. This allows the pesticide to simultaneously act on multiple locations around the trunk, increasing the spray coverage area. Simultaneously, the spraying heads can adaptively adjust to the contours of the trunk's outer wall, making the device suitable for trees of varying diameters, thus improving the adaptability and effectiveness of the spraying operation.

[0009] In this technical solution, the spraying unit is mounted on the vehicle frame via a fixing unit. The spraying unit includes a fixing frame and a support frame mounted on the fixing frame. The support frame includes multiple support plates arranged vertically at intervals. Adjacent support plates are fixedly connected by multiple connecting vertical rods. The support plate at the top is fixedly connected to the fixed frame by connecting vertical rods. The spraying sections on the same spraying unit are arranged in a rectangular array. The spraying sections located on the same horizontal layer are respectively installed on the same corresponding support plate, and each spraying section and the support plate are connected by a sliding spring connection.

[0010] Multiple spraying sections enable multi-point spraying of the tree trunk surface, and the spraying sections and the supporting plate are connected by a sliding and spring-loaded connection, so that the spraying sections of each layer can adapt to different sizes of the tree trunk in the vertical direction.

[0011] In this technical solution, the spraying unit includes a spraying component that can adjust the spraying angle. The spraying component is installed at one end of the support rod. The top of the support rod is fixedly connected to the guide rail. A guide slider is slidably sleeved on the surface of the guide rail. The guide slider is fixedly connected to the support plate through a connecting part. It also includes a guide telescopic rod, the two ends of which are fixed to the guide slider and the guide rail, respectively, and a spring is sleeved on the guide telescopic surface, with the two ends of the spring fixed to the two ends of the guide telescopic rod.

[0012] In this technical solution, the spraying component includes a mounting frame with an isosceles triangular outline. Two rotatable rollers are mounted on the side of the mounting frame away from the support rod. The rollers are arranged vertically. The top of the mounting frame is fixedly connected to the spray head through a connecting plate. The mounting bracket is rotatably connected to the end of the support rod, and a coil spring is provided at the rotatable connection. The two ends of the coil spring are fixed to the mounting bracket and the support rod, respectively.

[0013] In this technical solution, the connecting part includes a connecting horizontal plate, and the guide sliders located on the same horizontal layer are fixed to the bottom of the same connecting horizontal plate by a second fixing plate. The connecting horizontal plate is fixed to the corresponding bearing plate by a synchronization plate.

[0014] This technical solution also includes a driving component for driving the spraying unit to move towards one side of the tree trunk. The driving component is fixed on the fixed frame, and the moving end of the driving component is fixed on the support frame.

[0015] In this technical solution, the spraying sections located in the same horizontal layer are connected to each other by a transmission section. The transmission section includes a main transmission component and a driven transmission component that cooperate with each other. The main transmission component is provided on the spraying section located in the middle area of ​​the same horizontal layer, and the driven transmission component is provided on the other spraying sections. The spraying section located in the middle area of ​​the same horizontal layer will preferentially contact the outer wall of the trunk and slide relative to it when it is close to the trunk, thereby driving the main drive component to move. The main drive component drives the spraying sections on both sides to move synchronously toward the trunk by driving the transmission component.

[0016] In this technical solution, the main transmission component includes a first transmission horizontal plate, which is fixed on the corresponding spraying part. A drive rack is fixed on the surface of the first transmission horizontal plate, and the drive rack is connected to the drive gear. The transmission component includes a second transmission horizontal plate, which is fixed on the corresponding spraying part. A driven rack is fixed on the surface of the second transmission horizontal plate, and the driven rack is connected to the driven gear. The drive gear and driven rack of the same transverse layer are both sleeved and fixed on the same synchronizing rod, and both ends of the synchronizing rod are installed on the connecting part; In this technical solution, the driving rack and the driven rack are located on both sides of the driving gear and the driven gear.

[0017] The traveling mechanism includes a frame, and several traveling wheels are mounted on the bottom of the frame, with the multiple traveling wheels distributed around the bottom of the frame. The chassis is equipped with a medicine storage cylinder and a mounting shell, which is used to install pumps and other medicine delivery components.

[0018] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of the present invention.

[0019] The positive and progressive effects of this invention are as follows: This invention utilizes two symmetrically arranged spraying units on a walking mechanism, enabling the device to move to the tree trunk to perform spraying operations. As the two spraying units move synchronously inward from both sides of the trunk, multiple spraying parts gradually approach the outer wall of the trunk and adaptively adjust their positions according to the trunk's outer contour, ensuring good contact between the spraying parts at different locations and the corresponding areas of the trunk surface. With multiple spraying parts distributed around the trunk's perimeter, a near-circular spraying band is formed along the trunk's circumference, allowing the pesticide to simultaneously act on multiple areas around the trunk. Compared to unilateral spraying or manual circumferential spraying, this significantly improves the pesticide coverage on the trunk surface.

[0020] Because trees generally have different diameters and a natural tapering characteristic that gradually narrows from bottom to top, the size of the trunk at different heights is often not consistent. Multiple spraying units can adapt to the changes in the outline and size of the trunk, so that the spraying unit can be used for trees of different sizes and trunk areas at different heights, improving the equipment's adaptability to the actual working environment. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 For the present invention Figure 1 A schematic diagram of the structure viewed from below; Figure 3 This is a schematic diagram of the structure of the spraying assembly of the present invention; Figure 4 This is a schematic diagram of the connection structure between the support frame and the drive component of the present invention; Figure 5 This is a schematic diagram of the spraying unit of the present invention; Figure 6 For the present invention Figure 5 A structural diagram from another perspective; Figure 7 This is a schematic diagram of the connection structure between the single-layer spray coating part and the corresponding support plate of the present invention; Figure 8 For the present invention Figure 7 A structural diagram from another perspective; Figure 9 For the present invention Figure 8 A schematic diagram of the structure viewed from below; Figure 10 This is a schematic diagram of the connection structure between the main transmission component and the driven transmission component of the present invention; Figure 11 For the present invention Figure 10 A schematic diagram of the side view structure; Figure 12 This is a schematic diagram of the spraying section of the present invention; Figure 13 For the present invention Figure 12 A structural diagram from another perspective.

[0022] Explanation of reference numerals in the attached figures 101. Walking mechanism; 1011. Frame; 1012. Walking wheels; 1013. Medicine storage cylinder; 1014. Mounting housing; 1015. Handle; 1016. Fixing unit; 102. Spraying assembly; 1. Fixture; 2. Support frame; 21. Support plate; 22. Connecting vertical rod; 3. Spraying section; 31. Mounting frame; 32. Rotating roller; 33. Support rod; 34. Nozzle; 341. Connecting plate; 35. Guide telescopic rod; 36. Spring; 37. Guide slider; 38. Guide rail; 381. First fixing plate; 4. Transmission unit; 41. First transmission plate; 42. Second transmission plate; 43. Drive gear; 44. Driven gear; 45. Drive rack; 46. Driven rack; 47. Synchronizing rod; 5. Drive components; 6. Connecting part; 61. Connecting cross plate; 62. Synchronization plate; 63. Second fixing plate. Detailed Implementation

[0023] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments.

[0024] like Figure 1 and Figure 2 As shown, a tree insect repellent spraying device includes a walking mechanism 101, a spraying component 102 is provided on the walking mechanism 101, and a conveying mechanism for conveying the liquid pesticide is also provided on the walking mechanism 101. The conveying mechanism is used to convey the liquid pesticide to the spraying component 102 and spray it out. The spraying assembly 102 includes two symmetrically arranged spraying units, each of which is provided with multiple spraying parts 3. The two spraying units located on the periphery of the tree trunk to be sprayed move synchronously toward the trunk, and during the movement, the multiple spraying parts 3 adaptively abut against the outer wall of the trunk and form a near-ring structure spraying band along the periphery of the trunk.

[0025] Example 1 In this embodiment, as Figure 3-7 As shown, the spraying unit is mounted on the vehicle frame 1011 via the fixing unit 1016. The spraying unit includes a fixing frame 1 and a support frame 2 mounted on the fixing frame 1. The support frame 2 includes multiple support plates 21 arranged vertically at intervals. Adjacent support plates 21 are fixedly connected by multiple connecting vertical rods 22. The support plate 21 at the top is fixedly connected to the fixed frame 1 by the connecting vertical rods 22. The spraying parts 3 on the same spraying unit are arranged in a rectangular array. The spraying parts 3 located on the same horizontal layer are respectively installed on the corresponding support plate 21, and each spraying part 3 and the support plate 21 are connected by a sliding spring.

[0026] Multiple spraying units 3 are arranged in a rectangular array, enabling multi-point coverage spraying along the trunk's height and circumference, achieving continuous spraying of the trunk surface. Since each spraying unit 3 is connected to the supporting plate 21 via a sliding-rebound connection, as the spraying unit approaches the trunk, each spraying unit 3 can adaptively conform to the outer wall of the trunk under elastic action. It automatically adjusts its position according to the trunk's outer contour and changes in tree diameter at different heights, achieving independent position compensation. This adapts to different tree sizes and the natural tapered structure of the trunk, ensuring that each layer of spraying units 3 maintains a good fit with the trunk surface at its corresponding height. The multiple spraying units 3 together form a ring-shaped spraying band that matches the trunk's outer contour, ensuring a relatively stable spraying distance between each spraying unit 3 and the trunk. This improves spray uniformity and coverage integrity, reduces missed spraying caused by changes in tree diameter, irregular trunk shape, or local unevenness, minimizes pesticide waste, and enhances the equipment's adaptability to different tree species and sizes.

[0027] In this embodiment, the sliding rebound connection is such that the spraying part 3 is pushed and slides on the support plate 21, and can rebound and reset after the external force disappears.

[0028] Example 2 like Figure 12 and 13 As shown, the spraying unit 3 includes a spraying component that can adjust the spraying angle. The spraying component is installed at one end of the support rod 33. The top of the support rod 33 is fixedly connected to the guide rail 38. A guide slider 37 is slidably sleeved on the surface of the guide rail 38. The guide slider 37 is fixedly connected to the support plate 21 through the connecting part 6. It also includes a guide telescopic rod 35, the two ends of which are fixed to the guide slider 37 and the guide rail 38 respectively, and the guide telescopic surface is fitted with a spring 36, the two ends of which are fixed to the two ends of the guide telescopic rod 35 respectively.

[0029] Specifically, the spraying component includes a mounting frame 31 with an isosceles triangular outline. Two self-rotating rollers 32 are mounted on the side of the mounting frame 31 away from the bearing rod 33. The self-rotating rollers 32 are arranged vertically. The top of the mounting frame 31 is fixedly connected to the nozzle 34 through a connecting plate 341. The mounting bracket 31 is rotatably connected to the end of the support rod 33, and a coil spring is provided at the rotatable connection. The two ends of the coil spring are fixed to the mounting bracket 31 and the support rod 33 respectively.

[0030] Specifically, the support rods 33 of the same horizontal layer are all arranged parallel to each other, and the nozzles 34 are located behind the rotating rollers 32, that is, the nozzles 34 do not contact the tree trunk.

[0031] The mounting bracket 31, which has a triangular outer contour, has a self-rotating roller 32 installed at two of its corners, and the other corner is rotatably connected to the support rod 33.

[0032] When the coil spring does not deform, the two rotating rollers 32 are symmetrically arranged about the support rod 33 as the axis of symmetry. The connection between the rotating rollers 32 and the mounting frame 31 and the support rod 33 forms the waist of an isosceles triangle. The liquid outlet of the nozzle 34 is located in the symmetrical area of ​​the two rotating rollers 32, and the liquid outlet of the nozzle 34 and the two rotating rollers 32 form an approximately isosceles triangle arrangement, with the liquid outlet of the nozzle 34 located at the apex of the isosceles triangle.

[0033] As the spraying assembly moves towards and contacts the tree trunk, the two rotating rollers 32 first abut against the outer wall of the trunk and rotate under the support of the trunk surface. Due to differences in the trunk diameter, curvature, and contact position, the mounting frame 31 can rotate relative to the main body of the spraying assembly, allowing the two rotating rollers 32 to gradually form a stable overlap with the outer wall of the trunk. During this process, the two rotating rollers 32 and the trunk form a two-point positioning support, and the mounting frame 31 automatically adjusts its own posture so that the nozzle 34 outlet is located in the symmetrical area of ​​the two contact points and tends to face towards the center of the trunk.

[0034] As the mounting frame 31 rotates, the coil spring connected to the mounting frame 31 synchronously undergoes elastic deformation and stores elastic potential energy; when the spraying component detaches from the tree trunk, the coil spring releases its elastic potential energy, driving the mounting frame 31 to reset so that the next spraying operation can be carried out.

[0035] By setting two rotating rollers 32 that roll in contact with the tree trunk, and arranging the nozzle 34 outlet at symmetrical locations on the two rotating rollers 32, the mounting frame 31 can automatically adjust its rotation angle under the guidance and support of the two rotating rollers 32 when the spraying component contacts the tree trunk. This ensures that the nozzle 34 outlet always tends to face the center of the tree trunk, thus achieving adaptive adjustment of the spraying angle. Compared to a fixed-angle spraying structure, this structure can automatically correct the spraying direction according to different tree diameters, curvatures, and local unevenness of the tree trunk, making the sprayed liquid more concentrated on the tree trunk surface, improving the adhesion and uniformity of the liquid, and reducing waste caused by the outward diffusion of the liquid. At the same time, the rolling contact of the two rotating rollers 32 reduces the frictional resistance between the spraying component and the tree trunk, ensuring that the spraying component moves smoothly along the tree trunk surface, further improving the equipment's adaptability to trees of different sizes.

[0036] Example 3 like Figure 5 and 7 As shown in Figure 9, the connecting part 6 includes a connecting horizontal plate 61. The guide slider 37 located on the same horizontal layer is fixed to the bottom of the same connecting horizontal plate 61 by the second fixing plate 63. The connecting horizontal plate 61 is fixed to the corresponding bearing plate 21 by the synchronization plate 62.

[0037] like Figure 4As shown, it also includes a drive component 5 for driving the spraying unit to move towards one side of the tree trunk. The drive component 5 is fixed on the fixed frame 1, and the moving end of the drive component 5 is fixed on the support frame 2.

[0038] Specifically, the moving end of the drive component 5 is fixed on the support plate 21 that forms the uppermost part of the support frame 2.

[0039] Furthermore, the moving end of the drive component 5 is fixed on the synchronization plate 62 on the corresponding support plate 21.

[0040] Preferably, the driving component 5 is either an electric actuator or a hydraulic rod. The moving end of the driving component 5 is the end of the driven rod on the electric actuator or hydraulic rod.

[0041] Example 4 like Figure 7-10 As shown, the spraying sections 3 located in the same horizontal layer are connected to each other by a transmission section 4. The transmission section 4 includes a main transmission component and a driven transmission component that cooperate with each other. The main transmission component is provided on the spraying section 3 located in the middle area of ​​the same horizontal layer, and the driven transmission component is provided on the other spraying sections 3. The spraying part 3 located in the middle area of ​​the same horizontal layer will preferentially contact the outer wall of the trunk and generate relative sliding when it is close to the trunk, so as to drive the main transmission component to move. The main transmission component drives the spraying parts 3 on both sides to move synchronously towards the trunk by driving the transmission component.

[0042] As multiple spraying units 3 in the same horizontal layer approach the tree trunk, since each spraying unit 3 is arranged in an array along the horizontal direction, the spraying unit 3 located in the middle area is closest to the radial central axis of the tree trunk in terms of spatial position. Its movement path is the shortest and its directionality is the strongest. Therefore, compared with the spraying units 3 on both sides, it can preferentially contact the outer wall of the tree trunk.

[0043] In addition, since the spraying sections 3 on both sides are distributed at both ends of the lateral direction, their effective contact path is relatively longer as they approach the trunk due to the influence of the structural unfolding size and lateral spacing. This objectively results in a sequential relationship where the spraying section 3 in the middle contacts first and the spraying sections 3 on both sides contact later.

[0044] Utilizing the aforementioned first-contact characteristic, the spraying unit 3 in the middle region is used as the initial contact triggering unit, which can provide a stable reference input for the synchronous adjustment of the spraying units 3 in the same horizontal layer. This drives the transmission unit 4 to form a symmetrical transmission path from the middle to both sides, enabling the spraying units 3 on both sides to converge towards the trunk synchronously based on a unified triggering source and complete position compensation.

[0045] By using this triggering mechanism based on center-priority contact, the problem of asynchronous action caused by multiple spraying parts 3 making uncertain contact at the same time can be effectively avoided, the synchronicity and stability of the closing process of the spraying parts 3 in the same horizontal layer can be improved, and the adaptive fitting ability of the spraying parts 3 to different tree diameters and irregular outer contours of the trunk can be enhanced.

[0046] By setting up a linkage structure between the main drive component and the driven drive component, the spraying units 3 within the same horizontal layer can achieve synchronous retraction control after the middle spraying unit 3 contacts the tree, thus forming a collaborative adhesion mechanism with the middle spraying unit 3 as the driving reference. This structure can automatically adjust the relative positions of each spraying unit 3 as the spraying unit approaches the tree trunk, so that the spraying units 3 on both sides synchronously retract towards the outer wall of the tree trunk, improving the adhesion consistency between the spraying units 3 in the same horizontal layer and the tree trunk surface, enhancing the continuity of circumferential coverage, reducing local missed spraying and intermittent spraying, and improving the adaptability to different tree diameters and irregular tree trunks.

[0047] When there are an even number of spraying units 3 located in the same horizontal layer, the two spraying units 3 located in the middle area are connected to the main drive component; when there are an odd number of spraying units 3 located in the same horizontal layer, the single spraying unit 3 located in the middle area is connected to the main drive component.

[0048] Specifically, the main transmission component includes a first transmission horizontal plate 41, which is fixed to the end of the bearing rod 33 on the corresponding spraying part 3. A drive rack 45 is fixed on the surface of the first transmission horizontal plate 41, and the drive rack 45 is connected to the drive gear 43 in a transmission connection. The transmission component includes a second transmission horizontal plate 42, which is fixed to the end of the bearing rod 33 on the corresponding spraying part 3. A driven rack 46 is fixed on the surface of the second transmission horizontal plate 42, and the driven rack 46 is connected to the driven gear 44 in a transmission connection. The drive gear 43 and driven rack 46 of the same transverse layer are both sleeved and fixed on the same synchronizing rod 47. Both ends of the synchronizing rod 47 are mounted on the connecting horizontal plate 61 on the connecting part 6, and the synchronizing rod 47 can rotate. The driving rack 45 and the driven rack 46 are located on opposite sides of the driving gear 43 and the driven gear 44, meaning that the driving rack 45 and the driven rack 46 are not on the same side of the driving gear 43 and the driven gear 44. This results in the driving rack 45 and the driven rack 46 moving in opposite directions during the rotation of the driving gear 43 and the driven gear 44.

[0049] When the spraying section 3 in the middle area first contacts the tree trunk and detects relative displacement, a relative position occurs between the guide rail 38 and the guide slider 37 fixed to the corresponding support rod 33, thereby driving the first transmission plate 41 on the end of the support rod 33 to move. The drive rack 45 on the first transmission plate 41 also moves synchronously. The moving drive rack 45 pushes the drive gear 43 meshing with it to rotate. The rotating drive gear 43 drives the transmission gear installed coaxially with it to rotate. The rotating transmission gear pushes the corresponding driven rack 46 and the support rod 33 to move towards one side of the tree trunk.

[0050] Example 5 like Figure 1 and 2 As shown, the traveling mechanism 101 includes a frame 1011, with a plurality of traveling wheels 1012 mounted on the bottom of the frame 1011. These wheels are distributed around the bottom perimeter of the frame 1011 to ensure stability and balance during equipment movement. In practical applications, the number, specific installation position, and drive method of the traveling wheels 1012 can be reasonably set according to the equipment size, load-bearing weight, and operating environment. For example, a symmetrical arrangement, rectangular distribution, or a multi-wheel support structure can be used. These are all conventional techniques in the field and are not limited here.

[0051] The frame 1011 is equipped with a medicine storage cylinder 1013 that constitutes the conveying mechanism and a mounting shell 1014. The mounting shell 1014 is used to install pumps and other medicine conveying components. The entire device can be manually pushed by a handle 1015 fixed to the frame 1011, or it can achieve autonomous or assisted walking by a mechanical drive mechanism such as a drive motor and drive wheel assembly. The above-mentioned driving methods are all existing technologies.

[0052] The storage cylinder 1013 is used to store the spraying solution. The storage cylinder 1013 is connected to the inlet of the pump through the main pipeline, and the outlet of the pump is connected to the nozzles 34 in each spraying section 3 through the delivery pipeline. When the pump is running, the solution in the storage cylinder 1013 is pressurized by the pump and delivered to each nozzle 34 and sprayed out, thereby realizing the spraying operation on the tree trunk surface.

[0053] Preferably, to facilitate uniform distribution of the liquid and reduce the complexity of the pipeline layout, a staged and confluenced delivery structure can be adopted. Specifically, the pump outlet is first connected to the main supply pipe, which is connected to multiple confluence pipes. Multiple spray nozzles 34 located on the same horizontal layer are connected to the same confluence pipe via corresponding thin tubes, thus forming a liquid delivery path of "main supply pipe—confluence pipe—thin tube—nozzle 34". This staged supply structure effectively shortens the difference in supply distance between nozzles 34, improves the uniformity of liquid supply to each nozzle 34, and facilitates pipeline installation and maintenance.

[0054] Of course, in other embodiments, multi-stage diversion pipelines, ring-shaped liquid supply pipelines, parallel liquid supply pipelines or other conventional liquid supply structures can also be used to achieve liquid delivery, as long as the liquid supply needs of each nozzle 34 can be met. The above-mentioned pipeline connection methods are all existing technical solutions that can be selected by those skilled in the art according to actual needs, and are not specifically limited here.

[0055] Example 6 like Figure 1-3 As shown, the fixing unit 1016 is installed on the frame 1011. The fixing unit 1016 has a rod-shaped structure or a frame structure. The bottom end of the fixing unit 1016 is fixedly connected to the front end of the frame 1011, and the top end is fixedly connected to the fixing bracket 1. The mounting frame 1 has a U-shaped plate structure, and the two spraying units are respectively installed on the straight edges of the mounting frame 1 on opposite sides.

[0056] As one embodiment of the present invention, the fixing frame 1 adopts a "U"-shaped plate structure, and two spraying units are respectively installed on the straight edge areas opposite to each other on both sides of the fixing frame 1.

[0057] As the equipment approaches the tree trunk, the open end of the mounting bracket 1 faces the trunk, allowing the trunk to enter the opening area of ​​the mounting bracket 1. This allows the two spraying units to be naturally distributed on both sides of the trunk. Compared to installing the two spraying units on separate supports, the "U"-shaped mounting bracket 1 provides a unified installation reference for the two spraying units, which helps ensure the relative positional accuracy between the two spraying units. This allows them to approach the trunk synchronously from both sides, forming a near-circular spraying band around the trunk, thus facilitating circumferential spraying coverage of the trunk.

[0058] Meanwhile, the "U"-shaped structure allows for entry into the tree trunk, enabling the equipment to position the spraying units on both sides without having to cross the trunk, thus improving the convenience and stability of the equipment when it is close to the trunk.

[0059] Preferably, the fixing unit 1016 can drive the fixing frame 1 to move vertically up and down to adjust the working height of the spraying assembly 102 corresponding to the tree trunk, thereby adapting to the tree trunk spraying needs of different height areas.

[0060] Specifically, the fixed unit 1016 can be implemented using a lifting structure commonly used in the art. For example: electric push rod lifting structure, hydraulic cylinder lifting structure, pneumatic cylinder lifting structure, lead screw and nut lifting structure, gear and rack lifting structure, scissor lifting structure, etc.

[0061] The above structures can all achieve vertical position adjustment of the fixing frame 1 and the spraying component 102. The specific selection can be reasonably configured according to the equipment size, load requirements and working environment. They are all existing technologies known to those skilled in the art and are not specifically limited here.

[0062] This invention is not limited to the embodiments described above. Any changes in shape or structure shall fall within the protection scope of this invention. The protection scope of this invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of this invention, but all such changes and modifications shall fall within the protection scope of this invention.

Claims

1. A tree insecticide spraying device, comprising a walking mechanism (101), wherein a spraying assembly (102) is provided on the walking mechanism (101), and a conveying mechanism for conveying the pesticide solution is also provided on the walking mechanism (101), the conveying mechanism being used to convey the pesticide solution to the spraying assembly (102) and spray it out, characterized in that: The spraying assembly (102) includes two symmetrically arranged spraying units, each of which is provided with multiple spraying parts (3); the two spraying units located on the periphery of the tree trunk to be sprayed move synchronously toward the direction of the tree trunk, and during the movement, the multiple spraying parts (3) adaptively abut against the outer wall of the tree trunk and form a near-ring structure spraying band along the periphery of the tree trunk.

2. The tree insecticide spraying equipment as described in claim 1, characterized in that: The spraying unit is mounted on the vehicle frame (1011) via a fixing unit (1016). The spraying unit includes a fixing frame (1) and a support frame (2) mounted on the fixing frame (1). The support frame (2) includes multiple support plates (21) arranged vertically at intervals. Two adjacent support plates (21) are fixedly connected by multiple connecting vertical rods (22). The support plate (21) at the top is fixedly connected to the fixed frame (1) by the connecting vertical rods (22). The spraying parts (3) on the same spraying unit are arranged in a rectangular array. The spraying parts (3) located in the same horizontal layer are respectively installed on the corresponding same support plate (21), and each spraying part (3) and the support plate (21) are connected by a sliding spring.

3. The tree insecticide spraying equipment as described in claim 1, characterized in that: The spraying unit (3) includes a spraying component that can adjust the spraying angle. The spraying component is installed at one end of a support rod (33). The top of the support rod (33) is fixedly connected to a guide rail (38). A guide slider (37) is slidably sleeved on the surface of the guide rail (38). The guide slider (37) is fixedly connected to the support plate (21) through a connecting part (6). It also includes a guide telescopic rod (35), the two ends of which are fixed on the guide slider (37) and the guide rail (38) respectively, and a spring (36) is sleeved on the guide telescopic surface, the two ends of which are fixed on the two ends of the guide telescopic rod (35) respectively.

4. The tree insecticide spraying equipment as described in claim 3, characterized in that: The spraying component includes a mounting frame (31) with an isosceles triangular outline. Two self-rotating rollers (32) are mounted on the side of the mounting frame (31) away from the support rod (33). The self-rotating rollers (32) are arranged vertically. The top of the mounting frame (31) is fixedly connected to the nozzle (34) through a connecting plate (341). The mounting bracket (31) is rotatably connected to the end of the support rod (33), and a coil spring is provided at the rotatable connection. The two ends of the coil spring are respectively fixed on the mounting bracket (31) and the support rod (33).

5. The tree insecticide spraying equipment as described in claim 3, characterized in that: The connecting part (6) includes a connecting horizontal plate (61). The guide slider (37) located in the same horizontal layer is fixed to the bottom of the same connecting horizontal plate (61) by a second fixing plate (63). The connecting horizontal plate (61) is fixed to the corresponding bearing plate (21) by a synchronization plate (62).

6. The tree insecticide spraying equipment as described in claim 2, characterized in that: It also includes a drive unit (5) for driving the spraying unit to move toward one side of the tree trunk. The drive unit (5) is fixed on the fixing frame (1), and the moving end of the drive unit (5) is fixed on the support frame (2).

7. The tree insecticide spraying equipment as described in claim 2, characterized in that: The spraying sections (3) located in the same horizontal layer are connected to each other by a transmission section (4). The transmission section (4) includes a main transmission member and a driven transmission member that cooperate with each other. The main transmission member is provided on the spraying section (3) located in the middle area of ​​the same horizontal layer, and the driven transmission member is provided on the other spraying sections (3). The spraying part (3) located in the middle area of ​​the same horizontal layer first contacts the outer wall of the trunk and generates relative sliding when it is close to the trunk, so as to drive the main transmission component to move. The main transmission component drives the spraying parts (3) on both sides to move synchronously towards the trunk by driving the transmission component.

8. The tree insecticide spraying equipment as described in claim 7, characterized in that: The main transmission component includes a first transmission plate (41), which is fixed on the corresponding spraying part (3). A drive rack (45) is fixed on the surface of the first transmission plate (41), and the drive rack (45) is connected to the drive gear (43) in a transmission connection. The driven component includes a second drive plate (42), which is fixed on the corresponding spraying part (3). A driven rack (46) is fixed on the surface of the second drive plate (42), and the driven rack (46) is connected to the driven gear (44) in a drive connection. The drive gear (43) and driven rack (46) of the same transverse layer are both sleeved and fixed on the same synchronizing rod (47), and both ends of the synchronizing rod (47) are installed on the connecting part (6); The drive rack (45) and driven rack (46) are located on both sides of the drive gear (43) and driven gear (44).

9. The tree insecticide spraying equipment as described in claim 1, characterized in that: The walking mechanism (101) includes a frame (1011), and a plurality of walking wheels (1012) are installed at the bottom of the frame (1011). The plurality of walking wheels (1012) are distributed in the area around the bottom of the frame (1011). The frame (1011) is provided with a medicine storage cylinder (1013) constituting a conveying mechanism and a mounting housing (1014) for mounting a pump.

10. The tree insecticide spraying equipment as described in claim 9, characterized in that: The fixing unit (1016) is installed on the frame (1011). The fixing unit (1016) is a rod-shaped structure or a frame structure. The bottom end of the fixing unit (1016) is fixedly connected to the front end of the frame (1011), and the top end is fixedly connected to the fixing frame (1). The fixing frame (1) has a "U"-shaped plate structure, and the two spraying units are respectively installed on the straight edge parts that are opposite each other on both sides of the fixing frame (1).

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