Unmanned aerial vehicle for agricultural spraying

Abstract

The utility model relates to the technical field of agricultural tools, and discloses an agricultural spraying unmanned aerial vehicle which comprises an unmanned aerial vehicle body, a water tank is fixedly arranged in the center of the unmanned aerial vehicle body, a spraying structure is fixedly arranged at the left end of the unmanned aerial vehicle body, and supporting legs are fixedly installed on the outer walls of the front face and the back face of the unmanned aerial vehicle body. Damping mechanisms are arranged at the bottom ends of the supporting legs; the damping mechanism comprises a supporting shell, the top of the supporting shell is fixedly connected with the bottom ends of the supporting legs, a damping structure is arranged on the inner wall of the supporting shell in a sliding mode, and a first spring is fixedly installed on the inner wall of the top of the supporting shell. The rack pushes the gear to rotate forwards and backwards, then the water outlet pipe rotates in a reciprocating mode, the water outlet pipe rotates in a reciprocating mode to drive the spraying frame to rotate, and spraying of the spraying frame is more uniform.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural tools, in particular to a drone for agricultural spraying. Background Art

[0002] As the name suggests, plant protection drones are unmanned aircraft used for agricultural and forestry plant protection operations. This type of drone consists of three parts: a flight platform (fixed-wing, helicopter, multi-rotor aircraft), a navigation flight control, and a spraying mechanism. Spraying operations are achieved through ground remote control or navigation flight control. It can spray pesticides, seeds, powders, etc. It is also relatively convenient to use. Existing agricultural plant protection spraying drones do not have a shock absorption function when landing and taking off;

[0003] Existing Chinese patent CN215972100U discloses a drone for agricultural plant protection spraying. When the drone lands, a rubber plate pushes the mounting plate, pushing and squeezing the shock-absorbing spring and elastic rubber column to form a shock-absorbing effect, achieving a smooth landing.

[0004] However, the rubber plate in the above-mentioned agricultural plant protection spraying drone is always located outside the fixed shell. That is, before the drone takes off with a full load of spray liquid, the rubber plate will be under great pressure. When this part of the pressure is transmitted to the shock-absorbing spring and the elastic rubber column, the shock-absorbing spring and the elastic rubber column will be severely deformed, which makes the shock-absorbing spring and the elastic rubber column easily damaged, thereby reducing the service life of the shock-absorbing spring and the elastic rubber column. Utility Model Content

[0005] The purpose of the present utility model is to provide an agricultural spraying drone to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions: an agricultural spraying drone, comprising a drone body, a water tank fixedly disposed at the center of the drone body, a spraying structure fixedly disposed at the left end of the drone body, support legs fixedly mounted on the front and back outer walls of the drone body, and a shock absorbing mechanism disposed at the bottom ends of the support legs;

[0007] The shock absorbing mechanism includes a supporting shell, the top of the supporting shell is fixedly connected to the bottom end of the supporting leg, the inner wall of the supporting shell is slidingly provided with a shock absorbing structure, the top inner wall of the supporting shell is fixedly installed with a spring 1, the bottom end of the spring 1 is fixedly connected to the upper surface of the shock absorbing structure, the side outer wall of the shock absorbing structure is fixedly installed with a triangular plate 1, the top of the supporting shell is fixedly installed with a fixed plate, the top of the supporting shell is fixedly installed with a guide rail, the outer wall of the guide rail is slidingly provided with a movable plate, the outer wall of the movable plate is fixedly installed with a spring 2, the end of the spring 2 away from the movable plate is fixedly connected to the outer wall of the fixed plate, the outer wall of the movable plate facing the shock absorbing structure is fixedly installed with a triangular plate 2, and the inclined surface on the triangular plate 2 fits with the inclined surface on the triangular plate 1.

[0008] Furthermore, the shock-absorbing structure includes a mounting shell, which is slidably arranged in the supporting shell, a damper is fixedly installed on the inner wall of the mounting shell, a shock-absorbing plate is fixedly installed on the movable end of the damper, the shock-absorbing plate is slidably arranged in the mounting shell, a spring three is fixedly installed on the top of the shock-absorbing plate, and the top of the spring three is fixedly connected to the top inner wall of the mounting shell.

[0009] Furthermore, an adsorption shell is magnetically adsorbed on the top of the supporting shell, and the adsorption shell covers the outside of the fixed plate and the movable plate.

[0010] Furthermore, a rubber strip is fixedly installed on the top of the shock-absorbing plate, and a plurality of rubber strips are provided and distributed at equal intervals on the top of the shock-absorbing plate.

[0011] Furthermore, the spraying structure includes a front shell, which is fixedly installed on the left end of the drone body, and a water pump is fixedly installed on the inner wall of the front shell. The output end of the water pump is connected to a water inlet pipe, and the right end of the water inlet pipe is connected to the interior of the water tank. The output end of the water pump is connected to a U-shaped pipe, and the left end of the U-shaped pipe is provided with a rotary joint. The bottom port of the rotary joint is connected to a water outlet pipe, and the water outlet pipe passes through the bottom of the front shell through a bearing, and the bottom end of the water outlet pipe is connected to a spray rack.

[0012] Furthermore, a motor is fixedly mounted on the inner wall of the back side of the front shell, a reciprocating screw is fixedly mounted on the output end of the motor, a sliding block is provided on the threaded sleeve of the outer wall of the reciprocating screw, a rack is fixedly mounted on the bottom of the sliding block, a sliding rod is slidingly provided on the inner wall of the rack, the end of the sliding rod is fixedly connected to the inner wall of the front shell, the rack is meshed with a gear, and the gear is fixedly mounted on the outer wall of the water outlet pipe.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. Before the drone takes off, the shock-absorbing structure retracts into the supporting shell. The weight of the drone and the structures on the drone are mainly pressed on the supporting shell, reducing the pressure on the shock-absorbing structure. After the drone takes off, spring 1 pushes the shock-absorbing structure downward, which in turn drives the triangle plate downward, causing triangle plate 1 to push triangle plate 2 to move horizontally. After triangle plate 1 and triangle plate 2 are offset, spring 2 pushes triangle plate 2 to reset. At this time, triangle plate 1 is located below triangle plate 2, making it unable to move upward. The shock-absorbing structure extends from the supporting shell. When the drone lands, the shock-absorbing structure is ensured to contact the ground first, cushioning and reducing the vibration of the drone during landing, ensuring a stable landing of the drone.

[0015] 2. Use the motor to drive the reciprocating screw to rotate, so that the sliding block moves back and forth, and then drives the rack to move back and forth, so that the rack pushes the gear to rotate forward and reverse, and then the water outlet pipe rotates back and forth. The reciprocating rotation of the water outlet pipe drives the spray rack to rotate, making the spraying of the spray rack more uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 This is a structural diagram of an exploded view of the shock absorbing mechanism of the present invention;

[0018] Figure 3 This is a structural diagram of a front cross-sectional view of the support shell and the shock absorbing structure of the utility model;

[0019] Figure 4 This is a schematic structural diagram of the spraying structure of the utility model;

[0020] Figure 5 This is a structural diagram of a front sectional view of the front housing of the present invention.

[0021] In the figure: 1. UAV body; 2. Water tank; 3. Spraying structure; 301. Front shell; 302. Water outlet pipe; 303. Spraying rack; 304. Water inlet pipe; 305. Water pump; 306. U-shaped pipe; 307. Rotary joint; 4. Support leg; 5. Shock absorption mechanism; 501. Support shell; 502. Fixed plate; 503. Shock absorption structure; 504. Spring 1; 505. Triangle plate 1; 506. Triangle plate 2; 507. Guide rail; 508. Spring 2; 509. Moving plate; 5031. Mounting shell; 5032. Damper; 5033. Spring 3; 5034. Shock absorption plate; 6. Rubber strip; 7. Adsorption shell; 8. Gear; 9. Sliding rod; 10. Rack; 11. Reciprocating screw; 12. Sliding block; 13. Motor. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] See also Figure 1-Figure 5 The utility model provides a technical solution: an agricultural spraying drone, comprising a drone body 1, a water tank 2 fixedly provided at the center of the drone body 1, a spraying structure 3 fixedly provided at the left end of the drone body 1, support legs 4 fixedly installed on the front and back outer walls of the drone body 1, and a shock absorbing mechanism 5 provided at the bottom end of the support legs 4;

[0024] The shock absorbing mechanism 5 includes a supporting shell 501, the top of the supporting shell 501 is fixedly connected to the bottom end of the supporting leg 4, the inner wall of the supporting shell 501 is slidingly provided with a shock absorbing structure 503, the top inner wall of the supporting shell 501 is fixedly installed with a spring 1 504, the bottom end of the spring 1 504 is fixedly connected to the upper surface of the shock absorbing structure 503, the side outer wall of the shock absorbing structure 503 is fixedly installed with a triangular plate 1 505, the top of the supporting shell 501 is fixedly installed with a fixed plate 502, the top of the supporting shell 501 is fixedly installed with a guide rail 507, the outer wall of the guide rail 507 is slidingly provided with a movable plate 509, and the movable plate 509 is fixedly provided with a fixed plate 502. The outer wall is fixedly installed with a spring 2 508, and one end of the spring 2 508 away from the movable plate 509 is fixedly connected to the outer wall of the fixed plate 502. The outer wall of the movable plate 509 facing the shock absorbing structure 503 is fixedly installed with a triangle plate 2 506, and the inclined surface on the triangle plate 2 506 fits with the inclined surface on the triangle plate 1 505. Before the drone body 1 takes off, the shock absorbing structure 503 is retracted into the supporting shell 501, and the weight of the drone body 1 and the structure on the drone body 1 is mainly pressed on the supporting shell 501, reducing the pressure on the shock absorbing structure 503. After the drone body 1 takes off, the spring 1 504 pushes the shock absorbing structure 503 to move. The structure 503 moves downward, thereby driving the triangle plate 1 505 to move downward, so that the triangle plate 1 505 pushes the triangle plate 2 506 to move horizontally, until the triangle plate 1 505 and the triangle plate 2 506 are staggered, and the spring 2 508 pushes the triangle plate 2 506 to reset. At this time, the triangle plate 1 505 is located below the triangle plate 2 506, so that the triangle plate 1 505 cannot move upward, and the shock absorbing structure 503 extends from the supporting shell 501. When the drone body 1 lands, the shock absorbing structure 503 is guaranteed to contact the ground first, cushion and reduce the vibration of the drone body 1 when landing, and ensure that the drone body 1 is stable when landing. 03 includes a mounting housing 5031, which is slidably mounted within the supporting housing 501. A damper 5032 is fixedly mounted on the inner wall of the mounting housing 5031. A shock absorbing plate 5034 is fixedly mounted on the movable end of the damper 5032. The shock absorbing plate 5034 is slidably mounted within the mounting housing 5031. A spring 3 5033 is fixedly mounted on the top of the shock absorbing plate 5034. The top end of the spring 3 5033 is fixedly connected to the top inner wall of the mounting housing 5031. The spring 3 5033 and the shock absorbing plate 5034 are provided to cushion vibrations during landing, and the damper 5032 is provided to reduce vibrations during landing.

[0025] The top of the support shell 501 is magnetically attached with an adsorption shell 7, which covers the fixed plate 502 and the movable plate 509. During the flight of the drone body 1, the adsorption shell 7 is used to protect the fixed plate 502, the movable plate 509 and other structures;

[0026] A rubber strip 6 is fixedly mounted on the top of the shock-absorbing plate 5034. A plurality of rubber strips 6 are provided and evenly spaced on the top of the shock-absorbing plate 5034 to prevent the shock-absorbing plate 5034 from moving up quickly and colliding with the inner wall of the mounting housing 5031 due to the impact of the drone body 1 just landing.

[0027] The spraying structure 3 includes a front housing 301, which is fixedly mounted on the left end of the drone body 1. A water pump 305 is fixedly mounted on the inner wall of the front housing 301. The output end of the water pump 305 is connected to a water inlet pipe 304. The right end of the water inlet pipe 304 is connected to the interior of the water tank 2. The output end of the water pump 305 is connected to a U-shaped tube 306. The left end of the U-shaped tube 306 is provided with a rotary joint 307. The bottom port of the rotary joint 307 is connected to a water outlet pipe 302. The water outlet pipe 302 passes through the bottom of the front housing 301 through a bearing. The bottom end of the water outlet pipe 302 is connected to a spray rack 303. The spraying liquid in the water tank 2 is introduced into the water outlet pipe 302 through the water pump 305, the U-shaped tube 306, the U-shaped tube 306, and the rotary joint 307. The spraying liquid flows from the water outlet pipe 302 to the spray rack 303 and then sprays outward.

[0028] A motor 13 is fixedly installed on the inner wall of the back side of the front housing 301, and a reciprocating screw 11 is fixedly installed on the output end of the motor 13. A sliding block 12 is threadedly sleeved on the outer wall of the reciprocating screw 11, and a rack 10 is fixedly installed on the bottom of the sliding block 12. A sliding rod 9 is slidingly provided on the inner wall of the rack 10. The end of the sliding rod 9 is fixedly connected to the inner wall of the front housing 301, and the rack 10 is engaged with a gear 8. The gear 8 is fixedly installed on the outer wall of the water outlet pipe 302. The motor 13 drives the reciprocating screw 11 to rotate, so that the sliding block 12 moves back and forth, and then drives the rack 10 to move back and forth, so that the rack 10 pushes the gear 8 to rotate forward and reverse, and then the water outlet pipe 302 rotates back and forth. The reciprocating rotation of the water outlet pipe 302 drives the spray rack 303 to rotate, so that the spraying of the spray rack 303 is more uniform.

[0029] Working principle: When in use, fill the water tank 2 with spray liquid, turn on the drone body 1 for takeoff, and after the drone body 1 takes off, the spring 1 504 pushes the shock absorbing structure 503 downward, thereby driving the triangle plate 1 505 downward, so that the triangle plate 1 505 pushes the triangle plate 2 506 to move horizontally, until the triangle plate 1 505 and the triangle plate 2 506 are staggered, and the spring 2 508 pushes the triangle plate 2 506 to return to its original position. At this time, the triangle plate 1 505 is located below the triangle plate 2 506, so that the triangle plate 1 505 cannot move upward. The shock-absorbing structure 503 extends from the supporting shell 501, and the water pump 305 and the motor 13 are turned on to make the spraying frame 303 spray and rotate back and forth at the same time, so as to evenly spray the spraying area. When the drone body 1 lands, the shock-absorbing plate 5034 first contacts the ground. The vibration of the drone body 1 during landing is transmitted from the shock-absorbing plate 5034 to the damper 5032 and the spring three 5033. The damper 5032 and the spring three 5033 buffer and reduce the vibration during landing, so that the drone body 1 lands smoothly.

[0030] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

Claims

1. An agricultural spraying drone, comprising a drone body (1), characterized in that: A water tank (2) is fixedly provided at the center of the drone body (1), a spraying structure (3) is fixedly provided at the left end of the drone body (1), support legs (4) are fixedly installed on the front and back outer walls of the drone body (1), and a shock absorbing mechanism (5) is provided at the bottom end of the support legs (4); The shock absorbing mechanism (5) comprises a supporting shell (501), the top of the supporting shell (501) is fixedly connected to the bottom end of the supporting leg (4), the inner wall of the supporting shell (501) is slidingly provided with a shock absorbing structure (503), a spring (504) is fixedly installed on the top inner wall of the supporting shell (501), the bottom end of the spring (504) is fixedly connected to the upper surface of the shock absorbing structure (503), a triangular plate (505) is fixedly installed on the side outer wall of the shock absorbing structure (503), and a fixing plate (506) is fixedly installed on the top of the supporting shell (501). 02), a guide rail (507) is fixedly installed on the top of the support shell (501), a movable plate (509) is slidably provided on the outer wall of the guide rail (507), a spring 2 (508) is fixedly installed on the outer wall of the movable plate (509), one end of the spring 2 (508) away from the movable plate (509) is fixedly connected to the outer wall of the fixed plate (502), and a triangle plate 2 (506) is fixedly installed on the outer wall of the movable plate (509) facing the shock absorbing structure (503), and the inclined surface on the triangle plate 2 (506) is in contact with the inclined surface on the triangle plate 1 (505).

2. The agricultural spraying drone according to claim 1, characterized in that: The shock-absorbing structure (503) comprises a mounting shell (5031), wherein the mounting shell (5031) is slidably arranged in the supporting shell (501), a damper (5032) is fixedly installed on the inner wall of the mounting shell (5031), a shock-absorbing plate (5034) is fixedly installed on the movable end of the damper (5032), the shock-absorbing plate (5034) is slidably arranged in the mounting shell (5031), a spring three (5033) is fixedly installed on the top of the shock-absorbing plate (5034), and the top end of the spring three (5033) is fixedly connected to the top inner wall of the mounting shell (5031).

3. The agricultural spraying drone according to claim 1, characterized in that: An adsorption shell (7) is magnetically adsorbed on the top of the support shell (501), and the adsorption shell (7) is covered outside the fixed plate (502) and the movable plate (509).

4. The agricultural spraying drone according to claim 2, characterized in that: A rubber strip (6) is fixedly mounted on the top of the shock-absorbing plate (5034), and a plurality of the rubber strips (6) are provided and are distributed at equal intervals on the top of the shock-absorbing plate (5034).

5. The agricultural spraying drone according to claim 1, characterized in that: The spraying structure (3) comprises a front housing (301), the front housing (301) being fixedly mounted on the left end of the drone body (1), a water pump (305) being fixedly mounted on the inner wall of the front housing (301), the output end of the water pump (305) being connected to a water inlet pipe (304), the right end of the water inlet pipe (304) being connected to the interior of the water tank (2), the output end of the water pump (305) being connected to a U-shaped pipe (306), the left end of the U-shaped pipe (306) being provided with a rotary joint (307), the bottom port of the rotary joint (307) being connected to a water outlet pipe (302), the water outlet pipe (302) passing through the bottom of the front housing (301) via a bearing, and the bottom end of the water outlet pipe (302) being connected to a spraying rack (303).

6. The agricultural spraying drone according to claim 5, characterized in that: A motor (13) is fixedly mounted on the inner wall of the back side of the front housing (301); a reciprocating screw (11) is fixedly mounted on the output end of the motor (13); a sliding block (12) is threadedly sleeved on the outer wall of the reciprocating screw (11); a rack (10) is fixedly mounted on the bottom of the sliding block (12); a sliding rod (9) is slidingly mounted on the inner wall of the rack (10); an end of the sliding rod (9) is fixedly connected to the inner wall of the front housing (301); a gear (8) is meshed with the rack (10); and the gear (8) is fixedly mounted on the outer wall of the water outlet pipe (302).

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