Agricultural plant protection unmanned aerial vehicle spraying mechanism
By designing a protective cover and a rotatable nozzle structure on agricultural plant protection drones, the problems of uneven spraying caused by pesticide sloshing and easy nozzle damage have been solved, achieving stable spraying and protecting the nozzle.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN HUAXIN AVIATION CO LTD
- Filing Date
- 2025-07-23
- Publication Date
- 2026-07-17
Smart Images

Figure CN224511455U_ABST
Abstract
Claims
1. An agricultural plant protection unmanned aerial vehicle spraying mechanism, comprising an unmanned aerial vehicle body (1), characterized in that: Two support frames (6) are symmetrically installed at the bottom of the drone body (1), a shelf (5) is installed between the two support frames (6), and a medicine box (11) is installed on the top of the shelf (5). Each support frame (6) is bent upward at the bottom and a protective cover (7) with an opening at the bottom is connected to the bottom of the support frame (6). The protective cover (7) is located inside the bent part of the support frame (6). A strip connecting plate (18) is provided at the bottom of the protective cover (7). A nozzle (16) is installed on the top of the strip connecting plate (18). Several nozzles (20) are installed on the top of the nozzle (16). One side of the nozzle (16) is connected to the medicine box (11) through an infusion mechanism. The bottom ends of the strip connecting plate (18) are equipped with first connecting blocks (13), and the bottom ends of the protective cover (7) are equipped with second connecting blocks (19). The first connecting block (13) and the second connecting block (19) located on the same side are rotatably connected by connecting shaft (27). Two pairs of fixing blocks (3) are symmetrically installed on the top of the protective cover (7). A rotating shaft (10) is rotatably connected between each pair of fixing blocks (3). Both ends of the two rotating shafts (10) pass through the fixing blocks (3). The near ends of the two rotating shafts (10) are connected to the dual-axis motor (17) through electromagnetic brakes. The dual-axis motor (17) is fixed on the top of the protective cover (7). Two sprockets (9) are installed at opposite ends of the two shafts (10), and a first sprocket (8) is installed at one end of each connecting shaft (27). The first sprocket (8) and the second sprocket (9) on the same side are connected by a chain. The medicine box (11) is equipped with a movable plate (25). The top of the movable plate (25) is connected to the top of the medicine box (11) via an electric push rod (12). An air bag (26) is installed on the edge of the movable plate (25). An air pump (21) is installed on the top of the shelf (5). An air pipe (23) is connected to the air outlet of the air pump (21). The other end of the air pipe (23) passes through the top of the medicine box (11) and is connected to the air bag (26). 2.The agricultural plant-protection unmanned aerial vehicle spraying mechanism of claim 1, wherein: The infusion mechanism includes an infusion pump (4) installed on the top of the shelf (5). The inlet end of the infusion pump (4) is connected to the bottom side of the medicine box (11) through a pipe. An opening slot (14) is provided on the side of the protective cover (7). An infusion tube (15) is connected to the outlet end of the infusion pump (4). One end of the infusion tube (15) passes through the opening slot (14) and is connected to the nozzle (16).
3. The agricultural plant protection unmanned aerial vehicle spraying mechanism according to claim 2, characterized in that: A valve (22) is installed at one end of the infusion tube (15).
4. The agricultural plant protection unmanned aerial vehicle spraying mechanism according to claim 1, characterized in that: There is a gap between the two sides of the strip connecting plate (18) and the nozzle (20) and the inner wall of the protective cover (7).
5. The agricultural plant protection unmanned aerial vehicle spraying mechanism according to claim 4, characterized in that: When the nozzle (20) rotates to a position below the strip connecting plate (18), the bottom of the nozzle (20) is higher than the bottom of the support frame (6).
6. The agricultural plant-protection unmanned aerial vehicle spraying mechanism according to claim 1, characterized in that: A liquid inlet (24) is installed on one side of the medicine box (11). When the moving plate (25) is moved to the top of the inside of the medicine box (11), the end of the liquid inlet (24) near the medicine box (11) is located below the moving plate (25).
7. The agricultural plant-protection unmanned aerial vehicle spraying mechanism according to claim 3, characterized in that: The main body (1) of the drone is equipped with a control motherboard (2), which is connected to the infusion pump (4), electric push rod (12), dual-axis motor (17), air pump (21) and valve (22) respectively through wires; A liquid level sensor (28) is installed at the bottom of the medicine box (11). The liquid level sensor (28) is connected to the control motherboard (2) via a wire.