A multi-rotor spraying device for unmanned aerial vehicles

Abstract

This utility model discloses a multi-rotor spraying device for unmanned aerial vehicles (UAVs), relating to the field of UAV application technology. The device includes a water tank, a rotating mechanism, a baffle, and an adjusting mechanism, aiming to solve the problems of limited spraying range and susceptibility to wind interference in existing technologies. Its rotating mechanism includes a rotating disk fixedly connected to the top of the water tank, and a motor and gear assembly driving its rotation. The adjusting mechanism connects the water tank and the baffle, and includes a first fixed block and a second fixed block respectively fixed to the inner wall of the baffle and the inner wall of the water tank, as well as a telescopic rod rotatably connected at both ends between the two fixed blocks and a spring sleeved on it. This utility model expands the spraying range through the rotating mechanism, while the adjusting mechanism allows the baffle to adaptively adjust to block wind interference, solving the problems of low spraying efficiency and poor uniformity in existing technologies, and has the advantages of reliable structure and strong practicality.

Description

Technical Field

[0001] This utility model relates to the field of drone application technology, and in particular to a drone multi-rotor spraying device. Background Technology

[0002] Multi-rotor drones have been widely used in agricultural plant protection due to their advantages such as flexible operation, convenient take-off and landing, and high operating efficiency, especially in the spraying of liquids such as pesticides and liquid fertilizers. Conventional drone spraying devices usually have the liquid storage tank and nozzle fixedly installed under the drone fuselage.

[0003] In actual operation, this fixed structure revealed its inherent limitations. First, the spray coverage of the fixed nozzles is limited, mainly concentrated in the strip area directly below the drone, resulting in a narrow effective coverage area for a single operation. To complete large-area plant protection tasks, the drone needs to perform high-density back-and-forth flights, which to some extent affects the overall operation efficiency.

[0004] More importantly, during flight, the high-speed rotation of multiple rotors in multi-rotor drones generates a powerful and complex downdraft. When the nozzles spray fine droplets, these droplets are directly and severely interfered with by this downdraft, making it difficult for them to settle onto the crops along the intended trajectory. This results in severe drift, causing not only pesticide waste and potential environmental pollution, but also uneven pesticide adhesion to the target area, significantly reducing the actual effectiveness of pest and disease control. Existing spraying devices generally lack active countermeasures against this aerodynamic interference, making it difficult to guarantee the accuracy and effectiveness of spraying.

[0005] Therefore, this utility model proposes a multi-rotor spraying device for unmanned aerial vehicles (UAVs) to address the shortcomings of existing technologies. Utility Model Content

[0006] To overcome the above shortcomings, this utility model provides a multi-rotor spraying device for drones, which aims to improve the problems of limited spraying range and poor spraying effect caused by the interference of rotor wind field in the existing multi-rotor spraying device for drones.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a multi-rotor spraying device for unmanned aerial vehicles (UAVs), comprising: the UAV body and a water tank; as well as a rotating mechanism, a nozzle, a baffle and an adjusting mechanism.

[0008] The rotating mechanism includes a rotating disk fixedly connected to the top of the water tank, and a motor and gear assembly for driving the rotating disk to rotate; the adjusting mechanism includes a first fixing block and a second fixing block respectively fixed to the inner wall of the baffle and the inner wall of the water tank, and also includes a telescopic rod and a spring acting on the telescopic rod.

[0009] Furthermore, the two ends of the telescopic rod are respectively connected to the first fixed block and the second fixed block by a rotatable connection. The water tank is driven to rotate by the rotating mechanism to expand the spraying range. At the same time, the baffle is connected to the water tank by the adjusting mechanism to adaptively adjust the baffle angle to block wind interference.

[0010] Preferably, the rotating mechanism further includes a mounting box, and the motor is disposed inside the mounting box; the gear assembly includes a first gear that is drively connected to the motor and a second gear that meshes with the first gear, the second gear being used to drive the rotating disk to rotate.

[0011] Preferably, the rotating mechanism further includes a connecting plate, through which the first gear and the second gear are secured.

[0012] Preferably, the rotating mechanism further includes a rotating plate and a sliding column, and the rotating plate is provided with a sliding groove; during operation, the second gear drives the rotating plate to rotate and causes the sliding column to slide in the sliding groove, thereby achieving driving.

[0013] Preferably, the adjustment mechanism further includes a first ball shaft and a second ball shaft, with one end of the telescopic rod rotatably connected to the first fixed block via the first ball shaft, and the other end rotatably connected to the second fixed block via the second ball shaft, so as to achieve more flexible rotation.

[0014] Preferably, the adjustment mechanism further includes a mounting plate, a fixed shaft, and a connecting block; the mounting plate is fixed to the baffle, and the connecting block rotates inside the mounting plate via the fixed shaft, providing a pivoting structure for the opening or closing of the baffle.

[0015] Preferably, it also includes a fixing ring, which is fixed to the side wall of the water tank, and some components of the adjustment mechanism are mounted on the fixing ring to facilitate installation and fixation.

[0016] Preferably, the spring is installed by sleeve on the outside of the telescopic rod, which results in a compact structure and direct force application.

[0017] This utility model has the following beneficial effects:

[0018] 1. In this utility model, by first setting a rotating mechanism that can drive the water tank and the nozzle to rotate synchronously, the problem of limited spraying range and low coverage of the drone spraying device in the prior art is solved, thereby achieving the effect of expanding the spraying range and improving the operation efficiency.

[0019] 2. In this utility model, by setting up a baffle and an adjustment mechanism that can adaptively adjust the opening angle of the baffle, the problem of the downward wind field generated by the rotor of the drone interfering with the spray mist flow, causing the mist droplets to drift and settle unevenly, is solved. This achieves the effect of effectively blocking the wind force and ensuring the accuracy and uniformity of spraying. Attached Figure Description

[0020] Figure 1 This is a perspective view of a multi-rotor spraying device for unmanned aerial vehicles (UAVs) proposed in this utility model.

[0021] Figure 2 This is a bottom view of a multi-rotor spraying device for unmanned aerial vehicles (UAVs) proposed in this utility model;

[0022] Figure 3 This is a schematic diagram of the baffle of a multi-rotor spraying device for unmanned aerial vehicles (UAVs) proposed in this utility model;

[0023] Figure 4 This is a schematic diagram of the rotating mechanism of a multi-rotor spraying device for unmanned aerial vehicles (UAVs) proposed in this utility model.

[0024] Figure 5 for Figure 1 Enlarged view of point A in the middle;

[0025] Figure 6 for Figure 2 Enlarged view of point B in the middle.

[0026] Legend:

[0027] 1. Drone body; 2. Water tank; 3. Rotating mechanism; 301. Mounting box; 302. Motor; 303. First gear; 304. Connecting plate; 305. Second gear; 306. Rotating plate; 307. Sliding column; 308. Rotating disk; 309. Slide groove; 4. Fixing ring; 5. Baffle; 6. Adjusting mechanism; 601. First fixing block; 602. First ball shaft; 603. Second fixing block; 604. Second ball shaft; 605. Telescopic rod; 606. Spring; 607. Connecting block; 608. Mounting plate; 609. Fixing shaft; 7. Nozzle. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Reference Figures 1-6 The present invention provides an embodiment of a multi-rotor spraying device for unmanned aerial vehicles (UAVs), which aims to solve the problems in the prior art where the spraying range of UAVs is limited and the spray mist is easily affected by the wind field of the rotor, thus affecting the spraying effect.

[0030] The multi-rotor spraying device for drones includes a drone body 1 and a water tank 2. The water tank 2 is installed below the drone body 1. The drone body 1 provides the flight platform and power for the entire device. It is also equipped with a rotating mechanism 3 for expanding the spraying range, as well as a baffle 5 and an adjustment mechanism 6 for preventing the mist flow from being interfered with by the wind field. The rotating mechanism 3 is used to drive the water tank 2 to rotate. The adjustment mechanism 6 is connected between the water tank 2 and the baffle 5 and is used to adaptively adjust the opening angle of the baffle 5. The bottom of the device is also equipped with a nozzle 7 that communicates with the water tank 2 and is located at its bottom. Specifically, the rotating mechanism 3 includes a rotating disk 308 fixedly connected to the top of the water tank 2, and a motor 302 and a gear assembly for driving the rotating disk 308 to rotate. The adjustment mechanism 6 includes a first fixing block 601 and a second fixing block 603 fixed to the inner sidewall of the baffle 5 and the inner sidewall of the water tank 2, respectively. It also includes a telescopic rod 605 with its two ends rotatably connected to the first fixing block 601 and the second fixing block 603, respectively, and a spring 606 acting on the telescopic rod 605.

[0031] The rotating mechanism 3 includes a mounting box 301, a motor 302 is disposed inside the mounting box 301, and a gear assembly includes a first gear 303 that is connected to the motor 302 and a second gear 305 that meshes with the first gear 303. The first gear 303 and the second gear 305 are secured by a connecting plate 304, which enhances the stability of the gear transmission.

[0032] The rotating mechanism 3 also includes a rotating plate 306 and a sliding column 307. The rotating disk 308 has a sliding groove 309. In the assembled state, the second gear 305 rotates and drives the rotating plate 306 to reciprocate inside the rotating disk 308. At the same time, the sliding column 307 fixed on the rotating plate 306 slides inside the sliding groove 309. Since the bottom of the rotating disk 308 is fixedly connected to the top of the water tank 2, the rotating disk 308 can drive the water tank 2 and the nozzle 7 to rotate synchronously under the drive of the above components, thereby expanding the spraying range.

[0033] Meanwhile, the adjustment mechanism 6 ensures the stability of the spray mist. The adjustment mechanism 6 includes a first fixing block 601 and a second fixing block 603. The first fixing block 601 is fixed to the inner wall of the baffle 5, and the second fixing block 603 is fixed to the inner wall of the water tank 2. The two ends of the telescopic rod 605 are respectively rotatably connected to the first fixing block 601 through the first ball shaft 602 and rotatably connected to the second fixing block 603 through the second ball shaft 604. The ball shaft allows for multi-degree-of-freedom rotation. The spring 606 is sleeved on the outside of the telescopic rod 605.

[0034] To further limit the movement of the baffle 5, the adjustment mechanism 6 also includes a mounting plate 608, a fixed shaft 609, and a connecting block 607. The mounting plate 608 is fixed to the baffle 5, and the connecting block 607 rotates inside the mounting plate 608 via the fixed shaft 609. This structure ensures that the baffle 5 can open or close stably. For ease of installation, the device is also provided with a fixing ring 4, which is fixed to the side wall of the water tank 2. Some components of the adjustment mechanism 6 are mounted on the fixing ring 4.

[0035] The mounting box 301 of the rotating mechanism 3 provides a mounting base and protection for the motor 302 and the gear assembly. The output shaft of the motor 302 is connected to the first gear 303 for transmission. The first gear 303 meshes with the second gear 305. In order to further improve the stability of the gear meshing transmission, a connecting plate 304 is also provided between the first gear 303 and the second gear 305.

[0036] In order to effectively transmit the rotational motion of the gear assembly to the rotating disk 308, a groove 309 is provided on the rotating disk 308. The rotating mechanism 3 also includes a rotating plate 306 and a sliding column 307. The second gear 305 drives the rotating plate 306 to rotate, and the rotating plate 306 drives the sliding column 307 to slide along the groove 309, thereby driving the rotating disk 308 to drive the water tank 2 to rotate synchronously.

[0037] In order to make the telescopic rod 605 rotate more flexibly and smoothly when the opening angle of the baffle 5 changes, the adjustment mechanism 6 also includes a first ball shaft 602 and a second ball shaft 604. One end of the telescopic rod 605 is rotatably connected to the first fixed block 601 through the first ball shaft 602, and the other end is rotatably connected to the second fixed block 603 through the second ball shaft 604.

[0038] The adjustment mechanism 6 also includes a mounting plate 608, a connecting block 607, and a fixing shaft 609 fixed on the baffle 5. The connecting block 607 rotates inside the mounting plate 608 via the fixing shaft 609. This structure provides a stable structural basis for the opening and closing of the baffle 5.

[0039] The device also includes a fixing ring 4, which is fixed to the side wall of the water tank 2. Some components of the adjustment mechanism 6 are installed on the fixing ring 4, which facilitates the installation and fixation of the entire adjustment mechanism. In addition, in order to achieve a compact structural layout and direct force transmission, the spring 606 is preferably sleeved on the outside of the telescopic rod 605.

[0040] Working principle: When spraying is required, spraying liquid is first added to the water tank 2. After starting the drone body 1, the rotating mechanism 3 starts working. The motor 302 installed inside the mounting box 301 starts and drives the first gear 303 to rotate. Since the first gear 303 and the second gear 305 mesh with each other, the second gear 305 rotates accordingly and drives the rotating plate 306 to rotate back and forth in the rotating disk 308. At the same time, the sliding column 307 slides in the sliding groove 309 of the rotating disk 308. Since the bottom of the rotating disk 308 is fixedly connected to the top of the water tank 2, the rotating disk 308 rotates under the synergistic action of the above components, and synchronously drives the water tank 2 and the nozzle 7 set at its bottom to rotate, so that the water mist sprayed by the nozzle 7 spreads in a rotating manner, thereby effectively expanding the spraying range.

[0041] During the flight and spraying of the drone body 1, the baffle 5 is opened by the wind force generated by the drone rotor. At this time, the adjustment mechanism 6 performs adaptive adjustment. As the opening angle of the baffle 5 changes, the distance between the first fixing block 601 fixed to the inner wall of the baffle 5 and the second fixing block 603 fixed to the inner wall of the water tank 2 also changes. The extension length of the telescopic rod 605 connected between the two fixing blocks changes. When the opening angle of the baffle 5 increases, the telescopic rod 605 extends and pulls the spring 606 sleeved on its outside to produce elastic deformation. When the wind force decreases or the baffle 5 needs to be retracted, the restoring force of the spring 606 will pull the telescopic rod 605 to shorten, thereby reducing the opening angle of the baffle 5. Through this synergistic effect, the baffle 5 can effectively block the wind force from affecting the water mist sprayed by the nozzle 7, ensuring the stability and uniformity of the spray.

Claims

1. A multi-rotor spraying device for unmanned aerial vehicles (UAVs), comprising a UAV body (1) and a water tank (2), characterized in that: The rotating mechanism (3) includes a rotating disk (308) fixedly connected to the top of the water tank (2), and a motor (302) and gear assembly for driving the rotating disk (308) to rotate; The nozzle (7) is connected to and disposed at the bottom of the water tank (2); A baffle (5) and an adjusting mechanism (6), wherein the adjusting mechanism (6) is connected between the water tank (2) and the baffle (5), and the adjusting mechanism (6) includes: The first fixing block (601) is fixed to the inner wall of the baffle (5); The second fixing block (603) is fixed to the inner wall of the water tank (2); Telescopic rod (605), the two ends of which are rotatably connected to the first fixing block (601) and the second fixing block (603) respectively. A spring (606) is sleeved on the outside of the telescopic rod (605).

2. The UAV multi-rotor spraying device according to claim 1, characterized in that, The rotating mechanism (3) also includes a mounting box (301), and the motor (302) is located inside the mounting box (301); The gear assembly includes a first gear (303) that is connected to the motor (302) and a second gear (305) that meshes with the first gear (303), the second gear (305) driving the rotating disk (308) to rotate.

3. The UAV multi-rotor spraying device according to claim 2, characterized in that, The rotating mechanism (3) also includes a connecting plate (304), through which the first gear (303) and the second gear (305) are stabilized.

4. The UAV multi-rotor spraying device according to claim 2, characterized in that, The rotating mechanism (3) further includes a rotating plate (306) and a sliding column (307). The rotating disk (308) is provided with a sliding groove (309). The second gear (305) drives the rotating plate (306) to rotate in the rotating disk (308) and causes the sliding column (307) to slide in the sliding groove (309).

5. The UAV multi-rotor spraying device according to claim 1, characterized in that, The adjustment mechanism (6) further includes a first ball shaft (602) and a second ball shaft (604); one end of the telescopic rod (605) is rotatably connected to the first fixed block (601) through the first ball shaft (602), and the other end is rotatably connected to the second fixed block (603) through the second ball shaft (604).

6. The UAV multi-rotor spraying device according to claim 1, characterized in that, The adjustment mechanism (6) further includes a mounting plate (608), a fixed shaft (609), and a connecting block (607). The mounting plate (608) is fixed to the baffle (5), and the connecting block (607) rotates inside the mounting plate (608) via the fixed shaft (609) to allow the baffle (5) to open or retract.

7. The UAV multi-rotor spraying device according to claim 1, characterized in that, It also includes a fixing ring (4), which is fixed to the side wall of the water tank (2), and some components of the adjustment mechanism (6) are installed on the fixing ring (4).

8. The UAV multi-rotor spraying device according to claim 1, characterized in that, The spring (606) is sleeved on the outside of the telescopic rod (605).

Images