Multi-caliber unmanned aerial vehicle seeding device

Abstract

The utility model discloses a multi-aperture unmanned aerial vehicle seeding device, belongs to the technical field of seeding, and aims to solve the problem that an existing seeding device is easily interfered by a turbulent flow field below a rotor wing due to low initial falling speed of gravity when used for mixed seeding of seeds with different particle sizes. Comprising two cross rods at the bottom of an unmanned aerial vehicle body, and at least two symmetrically distributed seeding mechanisms are arranged between the cross rods; the seeding mechanism comprises a fixing frame, a fixing pipe on the fixing frame is rotationally connected with a rotary table, a plurality of discharging openings are formed in the rotary table, and the bottoms of the discharging openings are connected with discharging pipes with different inner diameters. A feeding assembly and an air blowing assembly are arranged on one side of the fixing frame, the feeding assembly comprises a material box, a feeding pipe, an auger and a driving motor, and the air blowing assembly comprises a fan, a hose and a communicating pipe. The adaptive discharging pipes are switched by rotating the rotating disc so as to be matched with aerodynamic characteristics of the seeds, and directional airflow in the pipes is matched to overcome on-way resistance and endow the seeds with extremely high vertical initial velocity. The method is suitable for precise vegetation recovery and crop planting in complex terrains such as mountainous regions and hills.

Description

TECHNICAL FIELD

[0001] The utility model belongs to unmanned plane seeding technical field, especially, relate to a multi caliber unmanned plane seeding device. BACKGROUND

[0002] In the agricultural planting and ecological restoration work, unmanned plane seeding is more and more widely applied because of high operation efficiency, and can adapt to complex terrain such as mountain and hilly land. However, in actual operation, especially in the ecological restoration mixed seeding scene, it often involves a variety of materials such as grass seeds, shrub seeds and the like.

[0003] The existing unmanned plane seeding device has a common neglected technical problem when processing these materials: the seed usually only relies on gravity to fall when leaving the discharge port, and its initial vertical speed is zero. Under the action of high-speed downwash generated by the rotor of the unmanned plane, the low-speed seed just out of the pipe port is easily rolled into the turbulent layer, resulting in unpredictable flight trajectory and blurred seeding boundary. In addition, when the pipe diameter is simply changed to adapt to different seeds, the lighter or irregularly shaped seeds are prone to frequent collision or electrostatic adsorption on the inner wall of the discharge pipe. This "wall sticking effect" greatly consumes the falling kinetic energy of the seeds, so that the seeds lack enough impact force to penetrate the ground vegetation layer or shallow soil layer when reaching the ground, which seriously affects the seedbed rate and germination rate. Therefore, a multi caliber unmanned plane seeding device is proposed. SUMMARY

[0004] The utility model aims at providing a kind of multi caliber unmanned plane seeding device, by constructing closed acceleration channel suitable for different seed particle sizes, seed vertical kinetic energy required to cross rotor turbulent layer is given using active jet to overcome pipe wall frictional resistance, the technical problems that seed falling process is easy to drift and the ability of entering soil is weak are solved.

[0005] To solve the above technical problems, the utility model is realized by the following technical solutions:

[0006] A kind of multi caliber unmanned plane seeding device, comprising: two cross bars are arranged in the bottom of unmanned plane body, two cross bars are horizontally arranged, and seeding mechanism is arranged between two cross bars;

[0007] The seeding mechanism includes a fixed frame, the fixed frame is fixed between the two cross bars by bolts, the top of the fixed frame is fixedly connected with a fixed pipe penetrating through, the fixed pipe is rotatably connected with a rotating disc around its circumference, the surface of the rotating disc is provided with a plurality of downward feeding ports penetrating through, the bottom of each downward feeding port is fixedly connected with a downward feeding pipe, and the inner diameters of the downward feeding pipes are different;

[0008] The seeding mechanism further comprises a feeding assembly arranged on one side of the fixed frame for feeding into one of the discharge pipes and a blowing assembly arranged on one side of the fixed frame for generating ion wind to eliminate static electricity and accelerate the falling of raw materials.

[0009] Further, the feeding assembly comprises a hopper fixed between the two cross bars by bolts, the bottom of the hopper is fixedly connected with a feeding pipe, one end of the feeding pipe is rotatably connected with a feeding auger, the top of the feeding pipe is provided with a bypass opening and communicates with the hopper, and the discharging end of the feeding pipe is arranged in a bent manner and located above one of the discharge ports.

[0010] Further, the top of each discharge port is fixedly connected with a sealing gasket for sealing the connection between the discharge port and the feeding pipe.

[0011] Further, one side of the hopper is fixedly connected with a motor, and one end of the output shaft of the motor is fixed with the auger.

[0012] Further, the blowing assembly comprises a fan, a hose and a plurality of communication pipes, the fan is fixed on one side of the outer wall of the hopper, the air outlet end of the fan is fixedly connected with a fixed pipe, an air outlet pipe is fixedly connected between the air outlet end of the fan and the fixed pipe, an ion generator is installed on the air outlet pipe, the emitting head of the ion generator is located inside the air outlet pipe for ionizing air, the communication pipes are fixedly connected on one side of the discharge pipes close to the rotation center respectively, one end of the hose is fixedly connected at the bottom of the fixed pipe, one end of the hose is rotatably connected with a threaded sleeve, and the threaded sleeve is threadedly connected with the communication pipe.

[0013] Further, the surface of the rotating disc is fixedly connected with a positioning sleeve, the fixed pipe passes through the positioning sleeve, the circumferential surface of the positioning sleeve is provided with a plurality of threaded holes corresponding to the positions of the discharge pipes, a jackscrew is threadedly connected in the threaded hole, and the jackscrew abuts against the fixed pipe.

[0014] Further, the seeding mechanism is provided with at least two and is symmetrically installed.

[0015] Further, the inner wall of each discharge pipe is fixedly connected with an inner liner pipe, the inner diameters of the inner liner pipes are different, a cavity is arranged between the inner liner pipe and the discharge pipe, a plurality of blow pipes are fixedly arranged on the inner wall of the inner liner pipe and inclined downward.

[0016] Working principle: when in use, mixed seeds are put into the material box, then different inner diameter of the discharge pipe can be selected according to the seeds, when selecting, the top wire is loosened, then the rotating disc is rotated, the appropriate discharge pipe is rotated to the discharging end of the feeding pipe, then the top wire is fixed, at the same time, the threaded sleeve on the hose is screwed with the corresponding communication pipe, then the unmanned aerial vehicle body takes off, the fan, the ion generator and the motor are started. The motor drives the auger to rotate to feed, at the same time, the high-speed airflow generated by the fan flows through the ion generator in the air outlet pipe and is instantaneously ionized into "ion wind" containing a large number of positive and negative ions, the raw materials fall through the discharge pipe connected therewith, at the same time, the fan blows gas into the fixed pipe and then into the discharge pipe, so as to increase the discharging speed and make the raw materials quickly fall into the ground, and the acceleration is used to make the seeds better fall to the ground, effectively prevent the seeds from being blown away and improve the seeding effect.

[0017] The embodiments of the utility model have the following beneficial effects:

[0018] 1. In the utility model, the rotating disc integrates different inner diameter of the discharge pipe, not only for passing through different size of seeds physically, more importantly, the pneumatic acceleration chamber matched with the size of the seeds is constructed. The matching design ensures that the airflow energy of the air blowing assembly can be converted into the vertical kinetic energy of the seeds to the maximum extent, avoids the problem of low airflow bypass efficiency caused by "big pipe blowing small seeds", cooperates with the use of the sealing gasket to ensure the airtightness of the acceleration channel, and significantly improves the landing point precision of the light seeds in the complex wind field environment.

[0019] 2. In the utility model, the directional airflow channel formed by the fan, the hose and the communication pipe forms forced convection in the discharge pipe. The airflow not only plays an acceleration role, but also effectively eliminates the "wall friction" phenomenon of the seeds and the inner wall of the discharge pipe, avoids the retention and jamming of the seeds caused by static electricity or friction. The active kinetic energy injection makes the seeds have stronger penetration when contacting the ground, especially beneficial for reseeding operation in the mountainous area with certain vegetation coverage, and improves the success rate of the seeds contacting the soil.

[0020] 3. In the utility model, the ion generator is introduced into the air blowing assembly to convert the ordinary accelerated airflow into "ion wind". The airflow carrying electric charges can quickly neutralize the static charges generated by the friction between the seeds and the pipe wall in the moment of entering the discharge pipe, and completely eliminates the wall sticking and clustering phenomenon caused by "static adsorption". Cooperate with the pneumatic acceleration to ensure that each seed can obtain the maximum vertical initial speed in the unobstructed state, like "bullet" to accurately shoot into the soil, greatly improve the seeding success rate of the light and small seeds.

[0021] Of course, any product implementing the utility model does not necessarily need to achieve all the advantages described above. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed for the description of the embodiments will be briefly introduced as follows. Obviously, the drawings described below are only some of the embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of these drawings.

[0023] Figure 1 is a three-dimensional structural schematic view of an embodiment of the present application;

[0024] Figure 2 is a sectional view of a seeding mechanism of an embodiment of the present application;

[0025] Figure 3 is a schematic view of a blanking pipe installation structure of an embodiment of the present application;

[0026] Figure 4 is a three-dimensional schematic view of a blanking pipe of an embodiment of the present application;

[0027] Figure 5 is a sectional view of a blanking pipe of Figure 4 ;

[0028] Figure 6 is a sectional view of an inner liner pipe of Figure 4 ;

[0029] Figure 7 is a sectional view of the inner liner pipe from another perspective;

[0030] Figure 8 is a three-dimensional structural schematic view of another embodiment.

[0031] In the drawings: 1, unmanned aerial vehicle body; 2, cross rod; 3, seeding mechanism; 4, material box; 5, feeding pipe; 6, motor; 7, auger; 8, fixing frame; 9, fixed pipe; 10, rotating disc; 11, fan; 12, air outlet pipe; 13, blanking port; 14, blanking pipe; 15, sealing gasket; 16, hose; 17, threaded sleeve; 18, communication pipe; 19, positioning sleeve; 20, jackscrew; 21, inner liner pipe; 22, air blowing pipe; 23, ion generator. DETAILED DESCRIPTION

[0032] The technical scheme in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, and not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0033] In order to keep the following description of the embodiments of the present application clear and brief, detailed description of known functions and known components is omitted.

[0034] In an embodiment: please refer to Figures 1-7 As shown in the figure, in the embodiment, a multi-aperture unmanned aerial vehicle seeding device is provided, which is mainly used to solve the problem of poor seeding effect caused by rotor wind field interference and insufficient seed kinetic energy in complex terrain. The unmanned aerial vehicle body 1 has a mounting interface at the bottom for mounting operation equipment. Two cross bars 2 are made of high-strength aluminum alloy material, and the length can be determined according to the body width of the unmanned aerial vehicle body 1 and the expected seeding coverage range. The two ends of the cross bar 2 are fixed to the mounting interface at the bottom of the unmanned aerial vehicle body 1 through U-shaped bolts, so as to ensure that the cross bar 2 is horizontal and stable after installation, and the two cross bars 2 are arranged in parallel.

[0035] The seeding mechanism 3 is arranged between the two cross bars 2 and symmetrically mounted along the central axis of the unmanned aerial vehicle body 1. Symmetrical mounting can balance the load of the unmanned aerial vehicle and avoid yaw during flight. The seeding mechanism 3 includes a fixing frame 8 fixed between the two cross bars 2. A fixing pipe 9 is vertically fixed to the top center position of the fixing frame 8. The fixing pipe 9 is made of high-strength nylon pipe or hard PVC pipe. The rotating disc 10 is a circular steel plate, and the center position thereof is rotationally connected to the circumference of the fixing pipe 9 through a deep groove ball bearing.

[0036] A plurality of through discharge ports 13 are uniformly arranged on the surface of the rotating disc 10 along the circumference. The discharge ports 13 are uniformly and equidistantly distributed. A discharge pipe 14 is fixed to the bottom of each discharge port 13. The discharge pipe 14 is made of PVC material, and the inner diameters thereof are different, which are respectively matched with seeds of different particle sizes to improve the seeding effect. The bottom port of the discharge pipe 14 is treated with rounded corners to avoid jamming when the seeds fall.

[0037] The feeding assembly is used for continuously feeding seeds to the selected discharge pipe 14. The core component of the feeding assembly is a rectangular box structure. An opening and closing feeding cover can be arranged on the top of the feeding box 4. A rubber sealing ring is arranged on the edge of the feeding cover to achieve dustproof and waterproof. Metal mounting ear plates are welded on the two sides of the feeding box 4. The bolt holes on the ear plates correspond to the cross bars 2. The feeding box 4 is fixed between the two cross bars 2 through bolts, and the position is located on one side of the fixing frame 8.

[0038] A feeding pipe 5 is integrally formed at the bottom of the feeding box 4. The feeding pipe 5 is a horizontally arranged circular pipe. An avoidance port is arranged at the top of one end of the feeding pipe 5 close to the feeding box 4. The size of the avoidance port is consistent with the opening at the bottom of the feeding box 4, so as to ensure that the seeds in the feeding box 4 can completely fall into the feeding pipe 5. The auger 7 is composed of a spiral blade and a center shaft. The spiral blade is made of stainless steel and is fixed on the center shaft by welding. The two ends of the center shaft are rotationally connected to the inner wall of the feeding pipe 5 through rolling bearings. The bearing seat is fixed to the end of the feeding pipe 5 by bolts to ensure smooth rotation of the auger 7.

[0039] The discharge end of the feeding pipe 5 is processed by a pipe bender into a ninety-degree bent structure, the bent port is vertically downward, and the center of the port is aligned with the center of one of the discharge ports 13 on the rotating disc 10. The side of the hopper 4 facing the discharge end of the feeding pipe 5 is fixed with a motor 6 through a motor support, the motor 6 is a DC speed reducer motor, the rated voltage matches the power supply system of the unmanned aerial vehicle, and the output shaft of the motor 6 is fixedly connected with the central shaft of the auger 7.

[0040] In order to prevent the seeds from leaking out of the connection between the feeding pipe 5 and the discharge port 13, a sealing gasket 15 made of wear-resistant nitrile rubber is fixed on the top edge of each discharge port 13 by glue. The diameter of the sealing gasket 15 is larger than that of the discharge port 13. When the discharge end of the feeding pipe 5 is aligned with the discharge port 13, the sealing gasket 15 is compacted to form a reliable sealing structure, reducing seed loss.

[0041] The blowing assembly is used to accelerate the falling of the seeds and avoid the seeds from being blown away by the air flow during the falling process, which includes a fan 11, a hose 16 and a plurality of communication pipes 18. The fan 11 is fixed on the outer wall of the hopper 4 near the fixed support 8 by bolts, and a dust screen is installed at the air inlet of the fan 11 to prevent foreign matter from entering. The air outlet end of the fan 11 is fixedly connected with an air outlet pipe 12 through a throat clamp, and the air outlet pipe 12 is a PU hose, the other end of which is fixedly communicated with the fixed pipe 9.

[0042] The communication pipe 18 is a hard plastic round pipe, one end of each communication pipe 18 is fixedly communicated with the side of the discharge pipe 14 near the rotating center of the rotating disc 10 by hot melt welding, and the connection position is located at the middle upper part of the discharge pipe 14 to ensure that the air flow can be blown into the inside of the discharge pipe 14 from the side. The bottom port of the fixed pipe 9 is fixedly connected with the hose 16 through a throat clamp. The end of the hose 16 away from the fixed pipe 9 is rotatably connected with a threaded sleeve 17, the internal threads of the threaded sleeve 17 are matched with the external threads of the end of the communication pipe 18, and the detachable communication between the hose 16 and the communication pipe 18 is realized through threaded connection. The fan 11 blows gas into the fixed pipe 9, and then into the discharge pipe 14, which increases the discharging speed, so that the raw materials can quickly fall into the ground, and the acceleration makes the seeds fall better, effectively preventing them from being blown away, and improving the seeding effect.

[0043] In order to realize the positioning and fixing of the rotating disc 10, a positioning sleeve 19 is welded at the center position of the upper surface of the rotating disc 10, and the fixed pipe 9 passes through the positioning sleeve 19. The circumferential surface of the positioning sleeve 19 is uniformly provided with a plurality of threaded holes corresponding to the number of the discharge pipes 14 along the radial direction, and the threaded holes are one-to-one corresponding to the discharge pipes 14 on the rotating disc 10. One of the threaded holes is screw-connected with a jackscrew 20, and the end of the jackscrew 20 is tightly contacted with the circumference of the fixed pipe 9 by screwing the jackscrew 20, so that the rotating disc 10 can be fixed at the current position by friction force. Loosening the jackscrew 20 can rotate the rotating disc 10 to switch the discharge pipes 14.

[0044] The inner wall of the downcomer pipe 14 is fixed with an inner liner pipe 21, the inner diameter of the inner liner pipe 21 is different, a cavity is arranged between the inner liner pipe 21 and the downcomer pipe 14, a plurality of blow pipes 22 are fixed on the inner wall of the inner liner pipe 21, the blow pipes 22 are arranged in a downward inclination, so as to ensure that the wind blows the seeds downward.

[0045] In another embodiment: reference to the accompanying drawings Figure 8 A multi-caliber unmanned aerial vehicle seeding device, the structure of the embodiment is basically the same as the foregoing embodiments, the difference lies in that: the ion generator 23 is installed on the air outlet pipe 12, and the emission head thereof is located inside the air outlet pipe 12 for ionizing air, so as to convert ordinary accelerated airflow into “ion wind”. The airflow carrying electric charges can quickly neutralize the static charges generated by the seeds and the pipe wall due to friction in the moment of entering the downcomer pipe, and completely eliminates the wall sticking and clustering phenomenon caused by “static adsorption”.

[0046] The drawings in the specification are only of a schematic nature, and the size and shape of each component shown are not actual limitations, but only a schematic representation. In the actual implementation process, each component can be reasonably configured and adjusted according to specific needs and actual conditions.

[0047] It should be noted that in the description of the specification, the description such as “first”, “second” and the like is only used to distinguish the features, and does not have actual order or direction meaning, and the application is not limited thereto.

[0048] In the description of the specification, the description of the terms “one embodiment”, “example”, “specific example” and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are contained in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0049] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details, and the utility model is not limited to the specific embodiments described. Obviously, according to the content of the specification, many modifications and changes can be made. The embodiments are selected and described in detail in the specification, in order to better explain the principles and practical application of the utility model, so that the persons skilled in the art can well understand and utilize the utility model. The utility model is limited by the claims and the whole scope and equivalents thereof.

Claims

1. A multi-caliber unmanned aerial vehicle (UAV) seeding device, characterized in that, include: Two horizontal bars (2) are set at the bottom of the drone body (1). The two horizontal bars (2) are set horizontally, and a seeding mechanism (3) is set between the two horizontal bars (2). The sowing mechanism (3) includes a fixed frame (8), which is fixed between two crossbars (2) by bolts. A through fixed pipe (9) is fixedly connected to the top of the fixed frame (8), and a turntable (10) is rotatably connected to the fixed pipe (9). Multiple through discharge ports (13) are provided on the surface of the turntable (10), and a discharge pipe (14) is fixedly connected to the bottom of each discharge port (13). The inner diameters of the discharge pipes (14) are different. The seeding mechanism (3) also includes a feeding component and a blowing component. The feeding component is located on one side of the fixed frame (8) for feeding material into one of the feeding pipes (14). The blowing component is located on one side of the fixed frame (8) for generating ion wind to eliminate static electricity and accelerate the falling of raw materials.

2. The multi-caliber drone seeding device as described in claim 1, characterized in that, The feeding assembly includes a material box (4), which is fixed between two crossbars (2) by bolts. A feeding pipe (5) is fixedly connected to the bottom of the material box (4). One end of the feeding pipe (5) is rotatably connected to a feeding auger (7). The top of the feeding pipe (5) is provided with a clearance opening and communicates with the inside of the material box (4). The end of the feeding pipe (5) that discharges material is bent and located above one of the discharge ports (13).

3. The multi-caliber drone seeding device as described in claim 2, characterized in that, Each of the discharge ports (13) is fixedly connected to a sealing gasket (15) to seal the connection between the discharge port (13) and the feeding pipe (5).

4. The multi-caliber drone seeding device as described in claim 2, characterized in that, A motor (6) is fixedly connected to one side of the material box (4), and one end of the output shaft of the motor (6) is fixed to the auger (7).

5. The multi-caliber drone seeding device as described in claim 1, characterized in that, The blowing assembly includes a blower (11), a hose (16) and multiple connecting pipes (18). The blower (11) is fixed on one side of the outer wall of the material box (4). The air outlet end of the blower (11) is fixedly connected to the fixed pipe (9) by an air outlet pipe (12). An ion generator (23) is installed on the air outlet pipe (12), and its emitter head is located inside the air outlet pipe (12) for ionizing air. The connecting pipes (18) are fixedly connected to the side of the feed pipe (14) near the rotation center. The hose (16) is fixedly connected to one end of the bottom of the fixed pipe (9). One end of the hose (16) is rotatably connected to a threaded sleeve (17), and the threaded sleeve (17) is threadedly connected to the connecting pipe (18).

6. The multi-caliber drone seeding device as described in claim 1, characterized in that, The surface of the turntable (10) is fixedly connected to a positioning sleeve (19), and the fixing tube (9) passes through the positioning sleeve (19). The circumferential surface of the positioning sleeve (19) is provided with multiple threaded holes corresponding to the position of the feeding tube (14). The threaded holes are connected to a set screw (20), and the set screw (20) abuts against the fixing tube (9).

7. The multi-caliber unmanned aerial vehicle (UAV) seeding device as described in claim 1, characterized in that, The seeding mechanism (3) shall be provided in at least two parts and installed symmetrically.

8. The multi-caliber drone seeding device as described in claim 1, characterized in that, The inner wall of each feed pipe (14) is fixed with an inner liner (21). The inner diameters of the inner liner (21) are different. A cavity is provided between the inner liner (21) and the feed pipe (14). Multiple through air pipes (22) are fixed on the inner wall of the inner liner (21). The air pipes (22) are inclined downward.

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