Multi-rotor mechanism of plant protection unmanned aerial vehicle

Abstract

The utility model relates to the technical field of plant protection unmanned aerial vehicles, in particular to a multi-rotor mechanism of a plant protection unmanned aerial vehicle, which comprises a plurality of extension plates and a rack, rotor components are arranged on the extension plates, a supporting block is arranged at one end of each extension plate far away from the corresponding rotor component, a rotating shaft is fixedly arranged on each supporting block, and a gear is arranged at one end of each rotating shaft. Extension plates are arranged on the two sides of the machine frame, supporting seats are arranged at one ends of the extension plates, supporting blocks are arranged below the extension plates, threaded sleeves are arranged in the supporting blocks, adjusting screw rods are arranged in the threaded sleeves in a threaded mode, and semicircular racks are rotationally arranged at one ends of the adjusting screw rods. And meanwhile, the plant protection unmanned aerial vehicle is fixed through a gear and a semicircular rack, so that the plant protection unmanned aerial vehicle can better adapt to various complex terrains, the unmanned aerial vehicle can stably take off and land on different terrains, and the operation flexibility and efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of plant protection UAVs, in particular to a multi-rotor mechanism of a plant protection UAV. Background Art

[0002] Plant protection drones are mainly composed of three parts: a flight platform, a navigation flight control system, and a spraying mechanism. They can spray pesticides, seeds, powders, etc., and have the advantages of high operating efficiency, good results, and water and pesticide saving. With the development of drone technology, the concept of agricultural drones has gradually replaced plant protection drones. Their functions are not limited to spraying and applying pesticides, but also include spreading fertilizers, sowing seeds, spreading feed, and other tasks to meet the diverse needs of farmers. The application of plant protection drones not only improves agricultural production efficiency, but also promotes the process of agricultural modernization. Plant protection drones have been widely used in paddy field sowing, fertilization, pest control, weeding, and mid- and late-stage pest control and fertilization operations in dry fields, becoming the main force in local agricultural operations. In addition, plant protection drones can also achieve all-weather operations, breaking the situation of traditional general aviation manned aircraft "working at sunrise and resting at sunset."

[0003] However, the positions of the multiple rotors of existing agricultural drones cannot be adjusted according to actual conditions, making them unable to adapt to different terrains and environments during takeoff. Utility Model Content

[0004] The purpose of the utility model is to provide a multi-rotor mechanism for a plant protection UAV, aiming to solve the technical problem in the prior art that the positions of the multiple rotors of the existing plant protection UAV cannot be adjusted according to actual conditions, and thus cannot be adapted to different terrains and environments during takeoff.

[0005] To achieve the above-mentioned purpose, the utility model adopts a multi-rotor mechanism of a plant protection drone, including multiple extension plates and a frame, wherein the extension plate is provided with a rotor assembly, and a supporting block is provided at one end of the extension plate away from the rotor assembly, a rotating shaft is fixedly provided on the supporting block, and a gear is provided at one end of the rotating shaft, an extension plate is provided on both sides of the frame, and a supporting seat is provided at one end of the extension plate, and a support block is provided below the extension plate, a threaded sleeve is provided in the support block, and an adjusting screw is provided with an adjusting screw in the inner thread of the threaded sleeve, a semicircular rack is rotatably provided at one end of the adjusting screw, and the semicircular rack is adapted to the gear, the supporting block is rotatably connected to the supporting seat through the rotating shaft and is located in the supporting seat, the semicircular rack and the gear are abutted against each other and are located on the outside of the gear.

[0006] Wherein, the plurality of extension plates are symmetrically arranged in pairs on both sides of the frame.

[0007] Wherein, the other end of the rotating shaft is provided with a fixing screw, the outer thread of the fixing screw is provided with a fixing nut and a washer, and the washer is supported on the top of the supporting seat, and the fixing nut is supported on the top of the washer.

[0008] Among them, a rotating ring is provided at one end of the adjusting screw, a knob is provided at the other end of the adjusting screw, a rotating groove is provided in the semicircular rack, the adjusting screw is rotatably connected to the semicircular rack and is located on the outside of the semicircular rack, and the rotating ring is located in the rotating groove.

[0009] Among them, two positioning rods are provided on the outer side of the semicircular rack, and a limiting ring is provided at one end of the positioning rod. The two positioning rods are respectively slidably connected to the support block and pass through both sides of the support block, and the two positioning rods are also respectively located on both sides of the adjusting screw.

[0010] Among them, the rotor assembly includes a rotor body, a motor and a support seat, the rotor body is arranged at the output end of the motor, the motor is arranged in the support seat, and the rotor body extends to the top of the support seat, and the support seat is arranged on the extension plate.

[0011] The utility model provides a multi-rotor mechanism of a plant protection drone, comprising a plurality of extension plates and a frame, wherein a rotor assembly is provided on the extension plate, a lifting block is provided at one end of the extension plate away from the rotor assembly, a rotating shaft is fixedly provided on the lifting block, a gear is provided at one end of the rotating shaft, extension plates are provided on both sides of the frame, a lifting seat is provided at one end of the extension plate, a supporting block is provided below the extension plate, a threaded sleeve is provided in the supporting block, an adjusting screw is provided on the inner thread of the threaded sleeve, a semicircular rack is rotatably provided at one end of the adjusting screw, and the semicircular rack is adapted to the gear, and the lifting block is connected to the supporting seat through the rotating shaft. The semicircular rack and the gear are in contact with each other and are located on the outside of the gear. The support block can be rotated around the shaft by setting the rotating shaft, thereby realizing the adjustment of the rotating assembly. At the same time, it is fixed by the gear and the semicircular rack, so that the plant protection UAV can better adapt to various complex terrains, and the UAV can take off and land stably on different terrains, thereby improving the flexibility and efficiency of the operation. In this way, the technical problem that the positions of multiple rotors of the existing plant protection UAV cannot be adjusted according to actual conditions, and thus cannot be adapted to different terrains and environments when taking off, is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0013] Figure 1 It is a three-dimensional stereogram of the present utility model.

[0014] Figure 2 It is the main view of the present utility model.

[0015] Figure 3 This utility model Figure 2 Sectional view along line AA.

[0016] Figure 4 This utility model Figure 3 A partial enlarged view of point B in the middle.

[0017] 1- extension plate, 2- frame, 3- support block, 4- shaft, 5- gear, 6- extension plate, 7- support seat, 8- support block, 9- threaded sleeve, 10- adjusting screw, 11- semicircular rack, 12- fixing screw, 13- fixing nut, 14- washer, 15- rotating ring, 16- knob, 17- rotating slot, 18- positioning rod, 19- limiting ring, 20- rotor body, 21- motor, 22- support seat. DETAILED DESCRIPTION

[0018] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0019] See also Figures 1 to 4The utility model provides a kind of multi-rotor mechanism of plant protection unmanned aerial vehicle, including multiple extension plate 1 and rack 2, the extension plate 1 is provided with rotor assembly, the one end of the extension plate 1 away from the rotor assembly is provided with lifting block 3, the rotation shaft 4 is fixedly arranged on the lifting block 3, the rotation shaft 4 one end is provided with gear 5, the both sides of the rack 2 are provided with extension plate 6, the one end of the extension plate 6 is provided with lifting seat 7, the lower of the extension plate 6 is provided with support block 8, the screw sleeve 9 is arranged in the support block 8, the screw sleeve 9 is threadedly provided with adjusting screw 10, the one end of the adjusting screw 10 is rotatably provided with semicircular rack gear 11, and the semicircular rack gear 11 is adapted with the gear 5, the lifting block 3 is rotatably connected with the lifting seat 7 by the rotation shaft 4, and is located in the lifting seat 7, the semicircular rack gear 11 is mutually resisted with the gear 5, and is located on the outside of the gear 5, by the setting of the rotation shaft 4, the lifting block 3 can rotate around the rotation shaft 4, to realize the adjustment of the rotating assembly, simultaneously, by the gear 5 and the semicircular rack gear 11 are fixed, to make plant protection unmanned aerial vehicle can better adapt to various complex terrain, and make unmanned aerial vehicle can take off and land stably on different terrain, improve the flexibility and efficiency of operation, in addition, unmanned aerial vehicle can also help to adapt to different climate conditions, by adjusting the layout of rotor, can reduce wind resistance, improve flight stability, to ensure the operation effect under adverse weather conditions, in this way, the position of multiple rotors of the existing plant protection unmanned aerial vehicle cannot be adjusted according to actual situation, so that it cannot be applied to different terrain and environment when taking off technical problems are solved.

[0020] Wherein, multiple the extension plate 1 is respectively two two symmetrical settings in the both sides of the rack 2.

[0021] Second, the other end of the rotation shaft 4 is provided with fixed screw 12, the outside of the fixed screw 12 is threadedly provided with fixed nut 13 and washer 14, and the washer 14 is resisted on the top of the lifting seat 7, the fixed nut 13 is resisted on the top of the washer 14, by the setting of the fixed nut 13, the position of the rotor assembly after adjustment can be ensured to form double fixation, to prevent displacement in flight process due to vibration or other reasons.

[0022] Thirdly, the one end of the adjusting screw 10 is provided with rotating ring 15, the other end of the adjusting screw 10 is provided with knob 16, the semicircular rack gear 11 has rotating groove 17, the adjusting screw 10 is rotatably connected with the semicircular rack gear 11, and is located on the outside of the semicircular rack gear 11, and the rotating ring 15 is located in the rotating groove 17, by the rotating ring 15, the adjusting screw 10 can be conveniently rotated in the semicircular rack gear 11, to prevent the semicircular rack gear 11 from rotating with the adjusting screw 10.

[0023] In addition, two positioning rods 18 are provided on the outer side of the semicircular rack 11, and a limiting ring 19 is provided at one end of the positioning rod 18. The two positioning rods 18 are respectively slidably connected to the support block 8 and pass through both sides of the support block 8. The two positioning rods 18 are also respectively located on both sides of the adjusting screw 10. The setting of the positioning rods 18 can limit the movement range of the semicircular rack 11 during the adjustment process, and at the same time prevent the semicircular rack 11 from rotating.

[0024] At the same time, the rotor assembly includes a rotor body 20, a motor 21 and a support base 22. The rotor body 20 is arranged at the output end of the motor 21, the motor 21 is arranged in the support base 22, and the rotor body 20 extends above the support base 22. The support base 22 is arranged on the extension plate 1. By starting the motor 21, the motor 21 drives the rotor body 20, thereby generating lift and thrust under the action of the high-speed rotation of the motor 21, thereby driving the frame 2 as a whole to take off.

[0025] When using the present invention to adjust the rotor assembly, the fixing nut 13 is loosened with a special tool, and then the adjusting screw 10 is rotated counterclockwise so that the adjusting screw 10 pulls the semicircular rack 11 away from the gear 5. At this time, the extension plate 1 is adjusted to a suitable position under the action of the supporting block 3 and with the rotating shaft 4 as the center, and then the adjusting screw 10 is rotated clockwise so that the adjusting screw 10 pushes the semicircular rack 11 against the gear 5 under the action of the rotating ring 15 and the threaded sleeve 9. Finally, the fixing nut 13 is tightened with a special tool to complete the adjustment and fixation of the rotor assembly. In this way, the technical problem that the positions of multiple rotors of the existing plant protection UAV cannot be adjusted according to actual conditions, and thus cannot be adapted to different terrains and environments during takeoff is solved.

[0026] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made in accordance with the claims of the present invention are still within the scope of the utility model.

Claims

1. A multi-rotor mechanism for a plant protection drone, characterized in that: The cam is provided with a plurality of extension plates and a frame, wherein a rotor assembly is provided on the extension plate, a lifting block is provided at one end of the extension plate away from the rotor assembly, a rotating shaft is fixedly provided on the lifting block, a gear is provided at one end of the rotating shaft, extension plates are provided on both sides of the frame, a lifting seat is provided at one end of the extension plate, a support block is provided below the extension plate, a threaded sleeve is provided in the support block, an adjusting screw is provided on the inner thread of the threaded sleeve, a semicircular rack is rotatably provided at one end of the adjusting screw, and the semicircular rack is adapted to the gear, the lifting block is rotatably connected to the lifting seat through the rotating shaft and is located in the lifting seat, the semicircular rack and the gear are abutted against each other and are located on the outside of the gear.

2. The multi-rotor mechanism of the plant protection UAV according to claim 1, characterized in that: The plurality of extension plates are symmetrically arranged in pairs on both sides of the frame.

3. The multi-rotor mechanism of the plant protection UAV according to claim 2, characterized in that: The other end of the rotating shaft is provided with a fixing screw, and the outer thread of the fixing screw is provided with a fixing nut and a washer, and the washer is supported on the upper side of the supporting seat, and the fixing nut is supported on the upper side of the washer.

4. The multi-rotor mechanism of the plant protection UAV according to claim 3, characterized in that: A rotating ring is provided at one end of the adjusting screw, and a knob is provided at the other end of the adjusting screw. A rotating groove is provided in the semicircular rack. The adjusting screw is rotatably connected to the semicircular rack and is located on the outside of the semicircular rack, and the rotating ring is located in the rotating groove.

5. The multi-rotor mechanism of the plant protection UAV according to claim 4, characterized in that: Two positioning rods are provided on the outer side of the semicircular rack, and a limiting ring is provided at one end of the positioning rod. The two positioning rods are respectively slidably connected to the support block and pass through both sides of the support block. The two positioning rods are also respectively located on both sides of the adjusting screw.

6. The multi-rotor mechanism of the plant protection UAV according to claim 5, characterized in that: The rotor assembly includes a rotor body, a motor and a support seat. The rotor body is arranged at the output end of the motor. The motor is arranged in the support seat, and the rotor body extends above the support seat. The support seat is arranged on the extension plate.

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