Lime spreading device carried on unmanned aerial vehicle

Abstract

The utility model relates to the technical field of agricultural spreading machinery, in particular to a lime spreading device carried on an unmanned aerial vehicle, which comprises the unmanned aerial vehicle and a material loading bin fixedly connected with the unmanned aerial vehicle, and the material loading bin is provided with an accommodating cavity with a top opening; the spreading mechanism is fixedly connected with the material loading bin and communicates with the containing cavity, the spreading mechanism is used for driving materials stored in the containing cavity to flow so as to spread the materials out of the material loading bin, the spreading mechanism comprises a conveying assembly communicating with the containing cavity, and the conveying assembly is used for conveying the materials in the containing cavity to a preset discharging opening; the spreading assembly is in transmission connection with the conveying assembly through the transmission assembly, the use cost is low for lime spreading operation, meanwhile, the unmanned aerial vehicle does not compact soil in the spreading process, follow-up growth of crops is not affected, the spreading mechanism can scatter materials flowing out of a discharging port to the field, and the spreading efficiency is improved. Therefore, the situation that no powdery lime covers the field is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to agricultural spreading mechanical field, especially a kind of lime spreading device carried on unmanned aerial vehicle. BACKGROUND

[0002] Due to the large input of chemical fertilizer, the problem of farmland soil acidification is more and more prominent, and the application of lime powder is one of the most economical and effective methods to improve soil. And with the rapid development of agricultural unmanned aircraft, the improvement of payload, more and more applied to the field of agricultural production, field management of crops, not only use unmanned aerial vehicle to spray liquid pesticide, but also use unmanned aerial vehicle to spread seed, powder, solid fertilizer and other particles.

[0003] At present, the powder lime spreading machine is mainly carried on the large horsepower tractor, matched with the rotary tillage operation, the power is provided by the tractor, and the spreading device is composed of multiple parallel arranged spiral conveying mechanisms. Its spreading method is to spread in strips in the field, but the device is quantitatively conveyed by spiral during operation and then spread in strips on the field. The strip spreading may occur in the case of no lime coverage, less coverage or insufficient coverage in the field between adjacent working areas. And the tractor is used as power source, the cost of lime spreading operation is high, and the tractor running in farmland is easy to improve the compaction rate of field soil, which affects the subsequent growth of crops.

[0004] Therefore, it has important practical significance to study a powder lime spreading device that can be carried on unmanned aerial vehicle equipment. UTILITY MODEL CONTENT

[0005] The utility model aims at least to solve one or more technical problems existing in the prior art, and therefore, the utility model provides a lime spreading device carried on unmanned aerial vehicle.

[0006] In the first aspect, the application provides a lime spreading device carried on unmanned aerial vehicle, which comprises:

[0007] Unmanned aerial vehicle;

[0008] Material loading bin, fixedly connected with the unmanned aerial vehicle, the material loading bin is provided with accommodating cavity with top opening;

[0009] Spreading mechanism, fixedly connected with the material loading bin and communicated with the accommodating cavity, the spreading mechanism is used to drive the material stored in the accommodating cavity to flow to spread outside the material loading bin.

[0010] In some embodiments that can be implemented, the spreading mechanism comprises:

[0011] Conveying assembly, communicated with the accommodating cavity, the conveying assembly is used to convey the material in the accommodating cavity to the preset discharge port.

[0012] a transmission assembly,

[0013] a spreading assembly, which is in transmission connection with the conveying assembly through the transmission assembly.

[0014] In some embodiments, the conveying assembly comprises:

[0015] a sleeve, which is provided with a feeding port in communication with the accommodating cavity and a discharging port staggered with the feeding port;

[0016] a conveying screw coaxially arranged in the sleeve, which is used for conveying the material from the feeding port to the discharging port;

[0017] a power member connected to one end of the conveying screw, which is used for driving the conveying screw to rotate.

[0018] In some embodiments, the conveying screw is provided with helical blades along the length direction.

[0019] In some embodiments, at least two discharging ports are respectively arranged on the surface of the sleeve on both sides of the feeding port, the helical blades have helical blade segments with different helical directions, and the helical blade segments are used for conveying the material from the feeding port to each discharging port.

[0020] In some embodiments, the transmission assembly comprises:

[0021] a first bevel gear arranged at one end of the conveying screw;

[0022] a disc shaft, which is provided with a second bevel gear at one end, and the second bevel gear is in meshing connection with the first bevel gear;

[0023] a rocker, which is movably connected to the disc surface of the disc shaft at one end and movably connected to the spreading assembly at the other end.

[0024] In some embodiments, one end of the rocker is movably connected to the surface position of the disc away from the center, so as to realize the reciprocating motion of the rocker driven by the rotation of the disc shaft.

[0025] In some embodiments, the spreading assembly comprises:

[0026] a support frame, which is fixedly connected to one end of the material loading bin;

[0027] a swinging rod seat, which is fixedly connected to one end of the support frame away from the material loading bin;

[0028] A swing rod is rotationally connected to the surface of the swing rod seat, and one end of the swing rod is rotationally connected to the rocker.

[0029] In some embodiments that can be implemented, the swing rod seat is directly opposite the discharge port, and when the discharge port flows out the material, at least part of the material falls onto the surface of the swing rod seat.

[0030] In some embodiments that can be implemented, at least two swing rod seats are arranged at one end of the support frame, and the swing rods rotationally connected to the surface of each swing rod seat are connected by a connecting rod.

[0031] Compared with the prior art, the technical scheme provided in the embodiments of the present application at least has the following beneficial effects:

[0032] The device of the present application uses a UAV as a carrier for lime spreading operation, does not need a traditional high-power tractor, and has low use cost for lime spreading operation. In addition, the UAV does not compact the soil during the spreading process, and does not affect the subsequent growth of crops. Furthermore, the spreading mechanism is arranged to comprehensively cover the field during the material spreading process. The spreading mechanism includes a conveying assembly, a transmission assembly, and a spreading assembly. The conveying assembly can uniformly convey the material in the material loading bin from the accommodating cavity to outside the material loading bin. The transmission assembly is arranged to enable the conveying assembly and the spreading assembly to operate synchronously under the condition of one driving element, thereby reducing the structural complexity of the device, reducing the mass of the spreading-related structure, and simplifying the structure and reducing the production cost. The spreading mechanism can scatter the material flowing out of the discharge port to the field, thereby avoiding the situation that there is no powdery lime covering the field.

[0033] Additional aspects and advantages of the present application will be given in part in the following description, and will become apparent from the following description, or will be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0035] Figure 1 is a first structural schematic view of a lime spreading device according to the embodiments of the present application;

[0036] Figure 2 is a second structural schematic view of a lime spreading device according to the embodiments of the present application;

[0037] Figure 3 is a structural schematic view of a material loading bin and a spreading mechanism according to the embodiments of the present application;

[0038] Figure 4 is a cross-sectional view of a carrier bin and a spreading mechanism according to an embodiment of the present application;

[0039] Figure 5 is a first structural schematic view of a spreading mechanism according to an embodiment of the present application;

[0040] Figure 6 is a second structural schematic view of a spreading mechanism according to an embodiment of the present application;

[0041] Figure 7 is a first structural schematic view of a spreading mechanism without a sleeve according to an embodiment of the present application;

[0042] Figure 8 is a second structural schematic view of a spreading mechanism without a sleeve according to an embodiment of the present application.

[0043] Reference Signs:

[0044] 10, lime spreading device;

[0045] 100, unmanned aerial vehicle; 110, unmanned aerial vehicle body; 120, foldable wing; 130, landing gear;

[0046] 200, carrier bin; 210, accommodating cavity; 220, through hole;

[0047] 300, spreading mechanism; 310, conveying assembly; 311, sleeve; 3111, feeding port, 3112, discharging port; 312, conveying screw; 3121, helical blade; 313, power member;

[0048] 320, transmission assembly; 321, first bevel gear; 322, disc shaft; 3221, second bevel gear; 323, rocker;

[0049] 330, spreading assembly; 331, support frame; 332, flinging rod seat; 333, flinging rod. DETAILED DESCRIPTION

[0050] The embodiments of the present application are described in detail below with reference to the accompanying drawings. The embodiments described with reference to the accompanying drawings are exemplary, and it should be understood that the specific embodiments described herein are merely intended to explain the present application and are not intended to limit the present application.

[0051] It should be noted that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can also be present.

[0052] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application. As used in this description, the singular forms "a", "an", and "the" include plural references unless the context clearly dictates otherwise.

[0053] Referring to Figures 1-2 The embodiment provides a lime spreading device carried on a unmanned aerial vehicle. The lime spreading device 10 comprises a unmanned aerial vehicle 100, a material carrying bin 200 and a spreading mechanism 300. The unmanned aerial vehicle 100 comprises a unmanned aerial vehicle body 110, foldable wings 120 arranged on the surface of the unmanned aerial vehicle body 110 and landing gears 130 arranged on the surface of the unmanned aerial vehicle body 110. The material carrying bin 200 is mounted on the unmanned aerial vehicle body 110, and the spreading mechanism 300 is mounted at the bottom of the material carrying bin 200. The material carrying bin 200 is provided with a containing cavity with a top opening, and is used for storing materials. The spreading mechanism 300 is fixedly connected with the material carrying bin 200 and communicates with the containing cavity, and is used for driving the materials stored in the material carrying bin 200 to flow out of the material carrying bin 200.

[0054] In some embodiments, the foldable wings 120 are arranged at the edges of the four corners of the unmanned aerial vehicle body 110, and a mounting area of the material carrying bin 200 is reserved in the middle area of the unmanned aerial vehicle body 110, so that the material carrying bin 200 is mounted on the area. In this way, the balance of the unmanned aerial vehicle 100 during flight can be better ensured. The spreading mechanism 300 is arranged below the material carrying bin 200 and is fixedly connected with the material carrying bin 200. The fixed connection can be a threaded connection or a buckle connection, and the specific connection mode can be selected according to actual needs.

[0055] Optionally, the landing gears 130 are fixedly connected with the unmanned aerial vehicle body 110, and are used for taking off and landing the unmanned aerial vehicle body 110 to maintain the stability of the unmanned aerial vehicle 100. Meanwhile, the landing gears 130 need to be arranged to lift the unmanned aerial vehicle 100 to a certain height, and when the unmanned aerial vehicle is placed on a horizontal ground, the bottom of the spreading mechanism 300 is kept a certain distance from the ground.

[0056] Optionally, the unmanned aerial vehicle 100 can be an unmanned aerial vehicle that already exists on the market. Therefore, the specific structure and working principle of the unmanned aerial vehicle body 110 and the foldable wings 120 are not described here.

[0057] Optionally, the lime spreading device 10 described above is mainly used for spreading lime, but can also be used for spreading some fertilizers, such as granular or powder fertilizers, and it should be understood that when used for spreading these materials, it is essentially the same technical concept as the technical solution provided in the present embodiment.

[0058] Of course, in order to determine the material quality of each spreading, so as to accurately control the spreading, a weighing module can also be provided at the connection between the material bin 200 and the unmanned aerial vehicle 100. The weighing module can be an existing mass sensor, which is used to support the material bin and can also obtain real-time weight information of the material.

[0059] As shown in Figures 3-4 , the material bin 200 is provided with a top-open containing cavity 210, and a through hole 220 is arranged at the bottom of the containing cavity 210. The top opening facilitates the addition of the material, and the through hole 220 facilitates the outflow of the material. The top opening can be provided in an open type to facilitate the addition of the material. Of course, the top opening can also be provided with a matching top cover to seal after the material is added, so as to prevent the material from flowing out of the top opening during the spreading process.

[0060] In some embodiments, the spreading mechanism 300 includes a conveying assembly 310, a transmission assembly 320, and a spreading assembly 330, which are in communication with the containing cavity 210. The conveying assembly 310 is used to convey the material in the containing cavity 210 to a predetermined discharge port, and the spreading assembly 330 is drivingly connected to the conveying assembly 310 through the transmission assembly 320.

[0061] Referring to Figures 4-8 , the conveying assembly 310 includes a sleeve 311, a conveying screw 312, and a power member 313. The surface of the sleeve 311 is provided with a feed port 3111 in communication with the containing cavity 210 and a discharge port 3112 arranged away from the feed port 3111. The feed port 3111 is in communication with the through hole 220, and the discharge port 3112 can be provided in multiple, preferably at a position close to the bottom of the sleeve 311. The discharge port 3112 is used to communicate the inner cavity of the sleeve 311 with the outside. The conveying screw 312 is coaxially arranged in the sleeve 311, and is used to convey the material from the feed port 3111 to the discharge port 3112. The power member 313 is fixedly connected to one end of the conveying screw 312, and is used to drive the conveying screw 312 to rotate.

[0062] Optionally, the power member 313 can be coaxially fixedly installed at one end of the sleeve 311. The power member 313 can be a variable-speed motor, which can be selected according to actual needs. The output shaft of the power member 313 can be fixedly connected to the conveying screw 312 through a shaft coupling, so as to drive the conveying screw 312 to rotate.

[0063] In some embodiments, the conveying screw 312 is provided with helical blades 3121 along the length direction, and at least two discharge ports 3112 are arranged on the surface of the sleeve 311 on both sides of the feeding port 3111, and the helical blades 3121 have helical blade segments with different helical directions, which are used to convey the material from the feeding port 3111 to each discharge port 3112.

[0064] Optionally, a plurality of discharge ports 3112 can be arranged on the surface of the sleeve 311 on both sides of the feeding port 3111, and the conveying screw 312 can be a bidirectional helical screw, i.e., the helical blades 3121 have helical blade segments with different helical directions on both sides of the feeding port 3111, so that when the material flows into the sleeve 311 from the feeding port 3111, the material can be conveyed to the discharge ports 3112 on both sides and flow out.

[0065] Of course, the conveying screw 312 can also have helical blades 3121 with only one helical direction. For example, when the helical blades 3121 are in a clockwise helical direction, the discharge port 3112 is on the right side of the feeding port 3111, and when the helical blades 3121 are in a counterclockwise helical direction, the discharge port 3112 is on the left side of the feeding port 3111.

[0066] In some embodiments, the transmission assembly 320 includes a first bevel gear 321, a disc shaft 322, and a rocker 323. The first bevel gear 321 is coaxially arranged at the end of the conveying screw 312 away from the transmission member 310. The disc shaft 322 is provided with a second bevel gear 3221 at one end, and the second bevel gear 3221 is engaged with the first bevel gear 321. One end of the rocker 323 is movably connected to the surface of the disc of the disc shaft 322, and the other end is movably connected to the spreading assembly 330. Specifically, one end of the rocker 323 is movably connected to the surface position of the disc away from the center, so as to realize the reciprocating motion of the rocker 323 driven by the rotation of the disc shaft 322.

[0067] Optionally, the transmission assembly 320 can be installed at the end of the sleeve 311 away from the transmission member 313, so as to limit the degree of freedom of the disc shaft 322, so that the disc shaft 322 can only rotate. When the conveying screw 312 rotates, the disc shaft 322 rotates, thereby driving the rocker 323 to reciprocate. The other end of the rocker 323 is connected to the spreading assembly 330, thereby driving the spreading assembly 330 to move synchronously.

[0068] In some embodiments, the scattering assembly 330 includes a support frame 331, a swing rod base 332, and a swing rod 333. One end of the support frame 331 is fixedly connected to the material loading bin 200. The swing rod base 332 is fixedly connected to the end of the support frame 331 away from the material loading bin 200. The swing rod 333 is rotatably connected to the surface of the swing rod base 332, and one end of the swing rod 333 is rotatably connected to the rocker 323. The swing rod base 332 faces the discharge port 3112. When the material flows out of the discharge port 3112, at least part of the material falls onto the surface of the swing rod base 332. At least two swing rod bases 332 are spaced apart on one end of the support frame 331. Each swing rod base 332 is rotatably connected to the swing rod 333 on its surface, and the swing rods 333 are drivingly connected by the connecting rod 333.

[0069] Optionally, one end of the rocker 323 is rotatably connected to one end of the swing rod 333. The rocker 323 can be fixed to the surface of the swing rod base 332 at the central position of the shaft, so that the swing rod 333 can only rotate. The structure of the swing rod base 332 can be triangular, elliptical, or irregular. The specific shape is selected according to actual needs, as long as the swing rod base 332 does not interfere with the rotation of the swing rod 333.

[0070] In order to further support and reinforce the connection between the rocker 323 and the swing rod 333, a small connecting rod can be additionally provided. One end of the small connecting rod is rotatably connected to the connection between the rocker 323 and the swing rod 333, and the other end is rotatably connected to one end of the axis of the swing rod 333.

[0071] It should be noted that the swing rod base 332 and the swing rod 333 are arranged corresponding to the number of discharge ports 3112. In this way, the material flowing out of the discharge port 3112 can be scattered by the swing rod base 332 and the swing rod 333, so as to facilitate the scattering of the material.

[0072] The device provided in the above embodiments uses a drone as a carrier for lime scattering operation, which does not require a traditional high-power tractor, and the cost of lime scattering operation is low. Moreover, the drone does not compact the soil during the scattering process, which does not affect the subsequent growth of crops. The scattering mechanism 300 is provided to more comprehensively cover the field during the material scattering process. The scattering mechanism 300 includes a conveying assembly 310, a transmission assembly 320, and a scattering assembly 330. The conveying assembly 310 can uniformly convey the material in the material loading bin 200 from the containing cavity 210 to outside the material loading bin 200. The transmission assembly 320 is provided to enable the conveying assembly 310 and the scattering assembly 330 to operate synchronously under the action of one driving element, thereby reducing the structural complexity of the device, reducing the weight of the scattering-related structure, and simplifying the structure and reducing the production cost. The scattering mechanism 300 can scatter the material flowing out of the discharge port 3112 to the field, thereby avoiding the situation that there is no powdery lime covering the field.

[0073] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0074] In the description of the specification, the description referring to the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the utility model. In the specification, the exemplary description of the above terms does not necessarily mean the same embodiment or example.

[0075] Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. In this paper, "embodiment" means that the specific features, structures or characteristics described in connection with the embodiment can be included in at least one embodiment of the present application. The phrase appears at various places in the specification is not necessarily the same embodiment, nor is it an independent or alternative embodiment or a preferred embodiment. Those skilled in the art can understand explicitly and implicitly that the embodiments described herein can be combined with other embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0076] Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and their equivalents.

Claims

1. A lime spreading device mounted on a drone, characterized by, The application relates to an unmanned aerial vehicle (100) and a material spreading device. The material spreading device comprises a material loading bin (200) fixedly connected with the unmanned aerial vehicle (100), wherein the material loading bin (200) is provided with a top-open containing cavity (210); a material spreading mechanism (300) fixedly connected with the material loading bin (200) and communicating with the containing cavity (210), wherein the material spreading mechanism (300) is used for driving the material stored in the containing cavity (210) to flow and spread out of the material loading bin (200). The material spreading mechanism (300) comprises a conveying assembly (310) communicating with the containing cavity (210), wherein the conveying assembly (310) is used for conveying the material in the containing cavity (210) to a preset discharging port; a transmission assembly (320); and a spreading assembly (330) drivingly connected with the conveying assembly (310) through the transmission assembly (320). The conveying assembly (310) comprises a sleeve (311) provided with a feeding port (3111) communicating with the containing cavity (210) and a discharging port (3112) arranged away from the feeding port (3111) on the surface of the sleeve (311); a conveying screw (312) coaxially arranged in the sleeve (311), wherein the conveying screw (312) is used for conveying the material from the feeding port (3111) to the discharging port (3112); and a power element (313) connected with one end of the conveying screw (312) and used for driving the conveying screw (312) to rotate.

2. The lime spreading device mounted on the unmanned aerial vehicle according to claim 1, wherein The conveying screw (312) is provided with helical blades (3121) along the length direction on the surface. At least two discharging ports (3112) are arranged on the surface of the sleeve (311) on both sides of the feeding port (3111), respectively; the helical blades (3121) have helical blade segments with different helical directions, and the helical blade segments are used for conveying the material from the feeding port (3111) to each discharging port (3112). The transmission assembly (320) comprises a first bevel gear (321) arranged at one end of the conveying screw (312); a disc shaft (322) provided with a second bevel gear (3221) at one end, wherein the second bevel gear (3221) is engaged with the first bevel gear (321); and a rocker (323) movably connected with the disc surface of the disc shaft (322) at one end and movably connected with the spreading assembly (330) at the other end. The rocker (323) is movably connected with the surface position of the disc away from the center of the disc at one end, so as to realize the reciprocating motion of the rocker (323) driven by the rotation of the disc shaft (322).

3. The lime spreading device mounted on the unmanned aerial vehicle according to claim 2, characterized in that, The spreading assembly (330) comprises a support frame (331) fixedly connected with the material loading bin (200) at one end; and a swinging rod base (332) fixedly connected with the support frame (331) at the end away from the material loading bin (200). ​ ​ ​ 4. The lime spreading device mounted on the unmanned aerial vehicle according to claim 3, characterized in that, ​ 5. The unmanned aerial vehicle mounted lime spreading device according to claim 4, wherein, ​ 6. The lime spreading device mounted on the unmanned aerial vehicle according to claim 3, wherein ​ ​ ​ ​ 7. The unmanned aerial vehicle mounted lime spreading device according to claim 6, wherein, ​ 8. The lime spreading device mounted on the unmanned aerial vehicle according to claim 2, wherein ​ ​ ​ A swing rod (333) is rotationally connected to the surface of the swing rod seat (332), and one end of the swing rod (333) is rotationally connected with the rocker (323).

9. The unmanned aerial vehicle mounted lime spreading device according to claim 8, wherein, The swing rod seat (332) is opposite to the discharge port (3112), and when the discharge port (3112) flows out the material, at least part of the material falls on the surface of the swing rod seat (332).

10. The unmanned aerial vehicle mounted lime spreading device of claim 8, wherein, At least two swing rod seats (332) are arranged at one end of the support frame (331), and the swing rods (333) rotationally connected to the surface of each swing rod seat (332) are transmissionally connected through a connecting rod (333).

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