Adjustable underframe on novel plant protection unmanned aerial vehicle

Abstract

The utility model relates to the technical field of plant protection unmanned aerial vehicles, and discloses a novel adjustable underframe on a plant protection unmanned aerial vehicle, which comprises an outer shell, a telescopic rod is fixedly connected to the lower surface of the outer shell, a support is fixedly connected to the bottom of the telescopic rod, and a limiting block is arranged on the upper surface of the support. A water tank is slidably connected to the outer wall of the limiting block, the top of the water tank is arranged on the inner wall of the outer shell, a rotating rod is rotatably connected to the interior of the support, a worm is fixedly connected to the outer wall of the rotating rod, a worm gear is rotatably connected to the interior of the support, and the worm is meshed with the worm gear. According to the plant protection unmanned aerial vehicle, the problems that the plant protection unmanned aerial vehicle is difficult to stably adjust and the water tank is difficult to adjust according to requirements are solved, and the effects that the unmanned aerial vehicle is stably adjusted, vibration and jolt of the unmanned aerial vehicle in the flying process are reduced, and meanwhile the size of the water tank is adjusted according to different crops to meet the change requirements are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of plant protection UAVs, and in particular to an adjustable chassis on a novel plant protection UAV. Background Art

[0002] New crop protection drones integrate advanced flight control systems and precision spraying technology, which can efficiently and accurately provide pesticides and fertilizers to crops. These drones usually have an adjustable chassis design, which enables them to adapt to the height and terrain conditions of different crops. The importance of this design is that it allows the drone to maintain the best working height and stability when performing crop protection operations in various farmland environments, thereby ensuring uniform spraying, reducing pesticide waste, and improving operation efficiency, while protecting the environment and farmers' health.

[0003] When using the adjustable chassis of a traditional crop protection drone, preparation work is first performed, including checking the drone and control system and setting the appropriate flight altitude. Then, the height of the drone chassis is adjusted through the chassis adjustment device according to the type and height of the crop to ensure that the sprayer does not touch the crop and maintain the uniformity of spraying. Next, the equipment is calibrated, the drone is started and the crop protection operation is carried out according to the preset flight plan. After the operation is completed, the drone returns to the take-off point and lands safely. Finally, it is cleaned and maintained to prepare for the next operation.

[0004] The above-mentioned traditional plant protection UAVs are mostly adjusted by adjusting the telescopic rod when adjusting the base frame, so as to adjust the height. This setting makes it difficult to achieve smooth adjustment of the plant protection UAV above during adjustment, which can easily cause tilting, resulting in instability during flight, and it is difficult to adjust the water tank according to needs. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides an adjustable base frame on a new type of plant protection UAV, aiming to improve the problem that it is difficult to achieve smooth adjustment of the plant protection UAV above during adjustment, which easily causes tilting, resulting in insufficient stability during flight, and it is difficult to adjust the water tank according to needs.

[0006] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: an adjustable chassis on a new type of plant protection drone, comprising an outer shell, a telescopic rod fixedly connected to the lower surface of the outer shell, a support fixedly connected to the bottom of the telescopic rod, a limit block provided on the upper surface of the support, an outer wall of the limit block slidably connected to a water tank, the top of the water tank provided on the inner wall of the outer shell, a rotating rod rotatably connected to the interior of the support, a worm fixedly connected to the outer wall of the rotating rod, a worm wheel rotatably connected to the interior of the support, the worm gear meshing with the worm wheel, a screw connected to the inner thread of the worm wheel, an outer wall of the screw threadedly connected to the interior of the support, a push rod fitted on the top of the screw, an outer wall of the push rod slidably connected to the interior of the support, a top of the push rod fixedly connected to the interior of the outer shell, and a supporting assembly provided on the outer wall of the support.

[0007] Furthermore, the support assembly includes a bracket, the top of the bracket is fixedly connected to the outer wall of the support, and the bottom of the bracket is fixedly connected to the base.

[0008] Furthermore, the interior of the base is slidably connected to a non-slip bottom plate, and the upper surface of the non-slip bottom plate is fixedly connected to a sliding rod 1.

[0009] Furthermore, a buffer spring 1 is sleeved on the outer wall of the sliding rod 1, one end of the buffer spring 1 is fixedly connected to the upper surface of the anti-slip bottom plate, and the other end of the buffer spring 1 is fixedly connected to the lower surface of the base.

[0010] Furthermore, the outer wall of the sliding rod 1 is slidably connected to the inside of the base, and the top of the sliding rod 1 is fixedly connected to a limiting plate.

[0011] Furthermore, a slide plate is fixedly connected to the interior of the anti-slip bottom plate, and a spring sheet is slidably connected to the interior of the slide plate.

[0012] Furthermore, a sliding sleeve is fixedly connected to the inner wall of the anti-slip bottom plate, a sliding rod 2 is slidably connected to the inner wall of the sliding sleeve, and a pressing plate is fixedly connected to the outer wall of the sliding rod 2.

[0013] Furthermore, a buffer spring 2 is sleeved on the outer wall of the second slide rod, one end of the buffer spring 2 is fixedly connected to the inner wall of the anti-slip bottom plate, and the other end of the buffer spring 2 is fixedly connected to the outer wall of the pressure plate.

[0014] The utility model has the following beneficial effects:

[0015] 1. In the utility model, the worm gear is driven to rotate by driving the rotating rod in cooperation with the worm, and then the plant protection UAV is pushed to adjust its height stably in cooperation with the screw rod, the push rod and the telescopic rod. In this process, the push rod adjusts the distance between the base frame and the plant protection UAV, and water tanks of different heights can be placed between the limit blocks, which solves the problem that it is difficult to achieve smooth adjustment of the plant protection UAV and difficult to adjust the water tank according to demand, thereby achieving stable adjustment of the UAV, reducing the vibration and turbulence of the UAV during flight, and adjusting the water tank size according to different crops to meet the changing needs.

[0016] 2. In the utility model, the weight of the drone causes the anti-skid floor to slide inside the base during landing, and then the first slide bar and the limit plate are used to shrink the first buffer spring, causing the spring sheet to deform, and then the slide plate, the second slide bar, the pressure plate and the sliding sleeve are used to shrink the second buffer spring, thereby achieving the effect of reducing damage to the drone through multiple buffers and protecting the drone from ground impact damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of an adjustable chassis on a new type of plant protection UAV proposed by the utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the outer shell of an adjustable chassis on a new type of plant protection UAV proposed by the utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of a support of an adjustable chassis on a new type of plant protection UAV proposed by the utility model;

[0020] Figure 4 This is a schematic diagram of the internal structure of the base of an adjustable chassis on a new type of plant protection UAV proposed by the utility model;

[0021] Figure 5 This is a schematic diagram of the structure of one side of a spring sheet of an adjustable chassis on a new type of plant protection UAV proposed by the utility model.

[0022] Legend:

[0023] 1. Outer shell; 2. Telescopic rod; 3. Support; 4. Water tank; 5. Limit block; 6. Rotating rod; 7. Worm; 8. Worm wheel; 9. Screw; 10. Push rod; 11. Bracket; 12. Base; 13. Anti-skid bottom plate; 14. Slide bar 1; 15. Buffer spring 1; 16. Limit plate; 17. Spring sheet; 18. Slide plate; 19. Slide bar 2; 20. Pressure plate; 21. Sliding sleeve; 22. Buffer spring 2. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Reference Figure 1 - Figure 3 The utility model provides an embodiment: an adjustable chassis on a novel plant protection UAV, comprising an outer shell 1, a telescopic rod 2 is fixedly connected to the lower surface of the outer shell 1, a support 3 is fixedly connected to the bottom of the telescopic rod 2, a limit block 5 is arranged on the upper surface of the support 3, the outer wall of the limit block 5 is slidably connected to a water tank 4, the top of the water tank 4 is arranged on the inner wall of the outer shell 1, a rotating rod 6 is rotatably connected to the inside of the support 3, a worm 7 is fixedly connected to the outer wall of the rotating rod 6, a worm wheel 8 is rotatably connected to the inside of the support 3, the worm 7 is meshed with the worm wheel 8, a screw 9 is threadedly connected to the inside of the worm wheel 8, the outer wall of the screw 9 is threadedly connected to the inside of the support 3, a push rod 10 is attached to the top of the screw 9, the outer wall of the push rod 10 is slidably connected to the inside of the support 3, the top of the push rod 10 is fixedly connected to the inside of the outer shell 1, and a supporting assembly is arranged on the outer wall of the support 3;

[0026] Specifically, first drive the rotating rod 6 to drive the two worm gears 7 to rotate inside the support 3. Since there is a precise meshing relationship between the worm gear 7 and the worm wheel 8, when the worm gear 7 rotates, the worm wheel 8 will also rotate accordingly. As the worm wheel 8 rotates, the screw rod 9 connected thereto also starts to rotate. Since there is a threaded relationship between the screw rod 9 and the support 3, when the screw rod 9 rotates, it will move up and down along the thread. The up and down movement of the screw rod 9 further promotes the movement of the push rod 10. The push rod 10 is a key component connecting the screw rod 9 and the outer shell 1. Its movement will directly drive the outer shell 1 to move accordingly, ensuring that the height of the base frame can be adjusted as needed. In the process of the push rod 10 pushing the outer shell 1 to move, the telescopic rod 2 plays an auxiliary guiding role. The telescopic rod 2 not only ensures the stability of the base frame movement, but also ensures the accuracy of the base frame during the adjustment process. When the height of the base frame is adjusted, the applicable water tank 4 can also be placed between the four limit blocks 5 to achieve the adjustment of the water tank 4.

[0027] Reference Figure 1 , Figure 4 and Figure 5The support assembly includes a bracket 11, the top of the bracket 11 is fixedly connected to the outer wall of the support 3, the bottom of the bracket 11 is fixedly connected to a base 12, the inside of the base 12 is slidably connected to an anti-skid bottom plate 13, the upper surface of the anti-skid bottom plate 13 is fixedly connected to a slide bar 14, the outer wall of the slide bar 14 is sleeved with a buffer spring 15, one end of the buffer spring 15 is fixedly connected to the upper surface of the anti-skid bottom plate 13, the other end of the buffer spring 15 is fixedly connected to the lower surface of the base 12, and the outer wall of the slide bar 14 is slidably connected to the inside of the base 12. The top of the slide bar 14 is fixedly connected with a limit plate 16, the inside of the anti-skid bottom plate 13 is fixedly connected with a slide plate 18, the inside of the slide plate 18 is slidably connected with a spring sheet 17, the inner wall of the anti-skid bottom plate 13 is fixedly connected with a sliding sleeve 21, the inner wall of the sliding sleeve 21 is slidably connected with a slide bar 29, the outer wall of the slide bar 29 is fixedly connected with a pressing plate 20, and the outer wall of the slide bar 29 is sleeved with a buffer spring 22, one end of the buffer spring 22 is fixedly connected to the inner wall of the anti-skid bottom plate 13, and the other end of the buffer spring 22 is fixedly connected to the outer wall of the pressing plate 20;

[0028] Specifically, through the stable cooperation between the bracket 11 and the base 12, the plant protection UAV is safely supported. When the UAV is ready to land, the anti-skid bottom plate 13 first contacts the ground, effectively preventing sliding. At this time, the supporting force of the ground on the anti-skid bottom plate 13 enables the anti-skid bottom plate 13 to slide smoothly inside the base 12, further driving the orderly sliding of the slide bar 14 inside the base 12, thereby appropriately squeezing the spring sheet 17. The sliding process of the slide bar 14 not only makes the buffer spring 15 effectively shrink between the base 12 and the anti-skid bottom plate 13, significantly reducing the impact force of the plant protection UAV during landing, but also the spring sheet 17 will deform after being squeezed, further prompting the two sides of the spring sheet 17 to slide inside the slide plate 18. As the spring sheet 17 deforms, the slide bar 2 19 is pressed by the spring sheet 17 and begins to drive the pressure plate 20 to slide inside the sliding sleeve 21, so that the buffer spring 2 22 can shrink, further enhancing the landing buffering effect, and the plant protection UAV can be effectively protected during landing, reducing the risk of damage caused by impact.

[0029] Working principle: When the adjustable chassis on the new plant protection UAV is needed, first drive the rotating rod 6 to drive the two worms 7 to rotate inside the support 3, so that the worm wheel 8 rotates with the rotation of the worm 7, thereby driving the screw 9 to rotate. Due to the threaded relationship between the screw 9 and the support 3, the screw 9 rotates and moves up and down at the same time, thereby pushing the push rod 10 to move, and then the movement of the push rod 10 drives the outer shell 1 to move. This process is assisted by the telescopic rod 2 to guide, so that the height of the bottom chassis can be adjusted, and it is also convenient to place and fix the water tanks 4 at different heights;

[0030] In addition, the plant protection UAV is supported by the bracket 11 and the base 12. When landing, the anti-skid bottom plate 13 first contacts the ground. At this time, the anti-skid bottom plate 13 is supported by the ground and then slides inside the base 12. The sliding of the base 12 drives the slide bar 14 to slide inside the base 12 and squeeze the spring sheet 17 at the same time. In this process, the sliding of the slide bar 14 causes the buffer spring 15 to shrink between the base 12 and the anti-skid bottom plate 13 to perform buffering. At the same time, the spring sheet 17 is deformed after being squeezed, so that the two sides of the spring sheet 17 slide inside the slide plate 18, and then pressurizes the slide bar 2 19, so that the slide bar 2 19 drives the pressure plate 20 to slide inside the sleeve 21, so that the buffer spring 2 22 shrinks, further buffering is performed, and the landing buffering effect is achieved.

[0031] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A novel adjustable chassis for a plant protection UAV, comprising an outer shell (1), characterized in that: The lower surface of the outer shell (1) is fixedly connected to a telescopic rod (2), the bottom of the telescopic rod (2) is fixedly connected to a support (3), the upper surface of the support (3) is provided with a limit block (5), the outer wall of the limit block (5) is slidably connected to a water tank (4), the top of the water tank (4) is arranged on the inner wall of the outer shell (1), the interior of the support (3) is rotatably connected to a rotating rod (6), the outer wall of the rotating rod (6) is fixedly connected to a worm (7), the interior of the support (3) A worm wheel (8) is rotatably connected, the worm (7) is meshed with the worm wheel (8), the internal thread of the worm wheel (8) is connected to a screw rod (9), the outer wall of the screw rod (9) is threadedly connected to the inside of the support (3), the top of the screw rod (9) is fitted with a push rod (10), the outer wall of the push rod (10) is slidably connected to the inside of the support (3), the top of the push rod (10) is fixedly connected to the inside of the outer shell (1), and the outer wall of the support (3) is provided with a support assembly.

2. The adjustable chassis on the novel plant protection UAV according to claim 1 is characterized by: The support assembly comprises a bracket (11), the top of the bracket (11) is fixedly connected to the outer wall of the support (3), and the bottom of the bracket (11) is fixedly connected to a base (12).

3. The adjustable chassis on the novel plant protection UAV according to claim 2 is characterized by: The interior of the base (12) is slidably connected to a non-slip bottom plate (13), and the upper surface of the non-slip bottom plate (13) is fixedly connected to a sliding rod (14).

4. The adjustable chassis on the novel plant protection UAV according to claim 3 is characterized by: The outer wall of the sliding rod (14) is provided with a buffer spring (15), one end of the buffer spring (15) is fixedly connected to the upper surface of the anti-slip bottom plate (13), and the other end of the buffer spring (15) is fixedly connected to the lower surface of the base (12).

5. The adjustable chassis on the novel plant protection UAV according to claim 4 is characterized by: The outer wall of the sliding rod 1 (14) is slidably connected to the inside of the base (12), and the top of the sliding rod 1 (14) is fixedly connected to a limiting plate (16).

6. The adjustable chassis on the novel plant protection UAV according to claim 3 is characterized by: A slide plate (18) is fixedly connected inside the anti-slip bottom plate (13), and a spring sheet (17) is slidably connected inside the slide plate (18).

7. The adjustable chassis on the novel plant protection UAV according to claim 6 is characterized by: The inner wall of the anti-slip bottom plate (13) is fixedly connected to a sliding sleeve (21), the inner wall of the sliding sleeve (21) is slidably connected to a second sliding rod (19), and the outer wall of the second sliding rod (19) is fixedly connected to a pressing plate (20).

8. The adjustable chassis on the novel plant protection UAV according to claim 7 is characterized by: The outer wall of the second slide rod (19) is sleeved with a second buffer spring (22), one end of the second buffer spring (22) is fixedly connected to the inner wall of the anti-slip bottom plate (13), and the other end of the second buffer spring (22) is fixedly connected to the outer wall of the pressure plate (20).

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