CN115250681A - Seed discharging and refluxing method for nut seeds - Google Patents
Seed discharging and refluxing method for nut seeds Download PDFInfo
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- CN115250681A CN115250681A CN202210912324.7A CN202210912324A CN115250681A CN 115250681 A CN115250681 A CN 115250681A CN 202210912324 A CN202210912324 A CN 202210912324A CN 115250681 A CN115250681 A CN 115250681A
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C7/00—Sowing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D1/00—Dropping, ejecting, releasing, or receiving articles, liquids, or the like, in flight
- B64D1/02—Dropping, ejecting, or releasing articles
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
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Abstract
The invention discloses a seed discharging and refluxing method for nut seeds, belonging to the technical field of unmanned aerial vehicle sowing; solves the problems that the prior seed plate method can not realize the return flow of the seeds which are not captured to the seed box and can not carry out the regular in-line seed arrangement when the nut seeds are sowed in the air. The seed metering and refluxing method for nut seeds comprises the following steps: seeds are supplied to the position near the seed discharging disc unit, a gas distribution disc is embedded in the seed discharging disc unit, a negative pressure capturing area in the gas distribution disc provides negative pressure for a seed spoon of the seed discharging disc, the seed discharging disc captures the nearby seeds under the action of the negative pressure, and the seeds fall into the seed spoon; the seed discharging disc of the seed discharging disc unit continues to operate, the seed spoon rotates to the emission position through transportation at a certain angle, and the seeds are emitted. The invention realizes the aerial rapid seed filling of the nut seeds and the return of the seeds which are not captured into the seed box.
Description
Technical Field
The invention relates to the technical field of unmanned aerial vehicle seeding, in particular to a seed discharging and refluxing method for nut seeds.
Background
Along with the development of unmanned aerial vehicle technique, be used for spraying insecticide in farmland, orchard etc. with unmanned aerial vehicle more among the prior art, unmanned aerial vehicle laxative technique obtains quick popularization and development, has been accepted by many planting households.
In addition, there are also prior art unmanned aerial vehicles used in the field of seed sowing, for example, grass seeds are sown, or seeds and fertilizer are mixed and thrown out through a throwing disc.
In the prior art, grass seeds or seeds are thrown out through the throwing disc, so that accurate seeding cannot be realized. In addition, for the hard shell nut seeds, the emission speed is relatively low when the seeds are thrown out, so that the seeds are sowed on the soil surface, and the germination and later growth of the seeds are influenced.
Disclosure of Invention
In view of the above analysis, the present invention is directed to a method for feeding and returning nut seeds, which solves the problems of the prior art that the conventional feed plate method cannot return the uncaptured seeds to the seed box and cannot feed seeds in a regular row when the nut seeds are sown in the air. .
The purpose of the invention is mainly realized by the following technical scheme:
the invention provides a seed metering and refluxing method for nut seeds, which comprises the following steps: a seeding process, a backflow process and a seed launching process are carried out by utilizing the seeding plate unit;
the seeding process by utilizing the seeding plate unit comprises the following steps: seeds are supplied to the position near the seed discharging disc unit, a gas distribution disc is embedded in the seed discharging disc unit, a negative pressure capturing area in the gas distribution disc provides negative pressure for a seed spoon of the seed discharging disc, the seed discharging disc captures the nearby seeds under the action of the negative pressure, and the seeds fall into the seed spoon;
the seed discharging disc of the seed discharging disc unit continues to operate, the seed spoon rotates to the emission position through transportation at a certain angle, and the seeds are emitted.
Further, the seed launching process is as follows: after the seed spoon rotates to the position aligned with the launching tube, the seeds in the seed spoon are launched by high-pressure air provided by the high-pressure air step on the air distribution plate.
Further, when the initial launching speed of the seeds cannot meet the requirement of sowing penetration depth, a first accelerating inclined tube is arranged on the launching tube; first accelerating inclined tube with locate the one-level high pressurized air source intercommunication on the unmanned aerial vehicle, first accelerating inclined tube is used for accelerating the seed in the launching tube.
Furthermore, a second accelerating inclined pipe is arranged below the first accelerating inclined pipe and communicated with a secondary high-pressure air source arranged on the unmanned aerial vehicle;
the second acceleration ramp is used to accelerate the seeds again within the launch tube.
Further, when the seed does not fall into the seed spoon, then get into the backward flow section of seed conveying unit, flow back to in the seed case.
Further, the seed refluxing process is as follows: high-pressure high-speed airflow is introduced into the injection inclined pipe of the backflow section, the high-pressure high-speed airflow flows out after passing through the second U-shaped pipe, and meanwhile, seeds which are not captured by the seed discharging disc in the seed filling section of the seed conveying unit sequentially enter the first U-shaped pipe, the vertical straight pipe and the second U-shaped pipe so as to flow back into the seed discharging box.
Further, the process of establishing negative pressure and capturing seeds in the negative pressure capturing area is as follows:
starting a negative pressure machine, and vacuumizing the negative pressure capturing area by the negative pressure machine through a negative pressure joint, a plurality of vent grooves on the air distribution shaft and a plurality of through grooves on the step of the shaft hole to form certain negative pressure in the negative pressure capturing area;
after certain negative pressure is established in the negative pressure capture area, outside air enters the seed spoon through the air leakage hole in the seed filling section, then enters the negative pressure capture area through the seed spoon and the first air hole, and when the outside air enters the negative pressure capture area, the seeds can be pushed into the seed spoon through the seed filling section, and the seeds are fixed in the seed spoon corresponding to the negative pressure capture area due to the negative pressure adsorption effect.
Further, when the emission angle of the emission tube needs to be adjusted, the emission tube is rotated to a set angle through the supporting unit;
the supporting unit comprises a triangular bracket, a launching tube supporting arm and a launching tube hoop; the triangular support is fixedly connected with the unmanned aerial vehicle;
the triangular bracket is hinged with a gas distribution shaft of the seed discharging disc unit; one end of the launching tube support arm is hinged with the gas distribution shaft, the other end of the launching tube support arm is fixedly connected with the launching tube clamp, and the launching tube clamp is used for installing the launching tube.
Furthermore, when the emission angle of the emission tube needs to be adjusted, the emission tube support arm is rotated, the emission tube support arm drives the distribution shaft of the seed plate unit to rotate, and the distribution shaft drives the seed plate to synchronously rotate;
when the seed discharging plate rotates, the area of the negative pressure capturing area is adjusted to correspond to the position of the seed charging section of the seed conveying unit.
Further, the driving unit is used for driving the seed discharging disc to rotate;
the driving unit comprises an engine, a driving wheel and a belt, the engine is arranged on the triangular support, the driving wheel is directly arranged on an output shaft of the engine, and the driving wheel and the seed metering disc are driven by the belt to drive the seed metering disc to rotate.
Compared with the prior art, the invention can realize at least one of the following beneficial effects:
(1) The invention provides a seed discharging and refluxing method of nut seeds, which comprises the steps of supplying seeds to a seed charging section near a seed discharging disc unit, wherein a gas distribution disc is embedded in a seed discharging disc in the seed discharging disc unit, a negative pressure capturing area in the gas distribution disc provides negative pressure for a seed spoon of the seed discharging disc, the seed discharging disc captures the nearby seeds under the action of the negative pressure, and the seeds fall into the seed spoon; when the seed does not fall into the seed scoop, then get into the backward flow section of seed conveying unit, flow back to in the seed case. The seed discharging disc of the seed discharging disc unit continues to operate, the seed spoon rotates to the emission position through transportation at a certain angle, and the seeds are emitted. The invention realizes the accurate seed metering of seeds.
(2) According to the invention, the first accelerating inclined tube and the second accelerating inclined tube are arranged on the transmitting tube, so that the transmitting speed of the nut seeds can be improved, the seeds can penetrate through the surface layer of soil, and the seeding effect of the seeds is ensured.
In the invention, the technical schemes can be combined with each other to realize more preferable combination schemes. Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the invention, wherein like reference numerals are used to designate like parts throughout.
FIG. 1 is a schematic view of a seed metering device;
FIG. 2 is a schematic view of the structure of a seed plate;
FIG. 3 is a schematic structural view of the bearing seat hole and the large pulley on the first cover plate;
FIG. 4 is a schematic view of the seed spoon;
FIG. 5 is a schematic structural diagram of a disc body of the gas distribution disc;
FIG. 6 is a schematic structural view of a second cover plate of the gas panel;
FIG. 7 is a schematic structural view of a gas distribution shaft 1;
FIG. 8 is a schematic structural view of a gas distribution shaft 2;
FIG. 9 is a schematic structural view of a seed box unit;
FIG. 10 is a schematic view of the structure of the seed charging section and the seed discharging plate;
FIG. 11 is a schematic structural view of the supporting unit;
FIG. 12 is a side view of the seed tray apparatus;
FIG. 13 is a schematic view of a seed charging section;
FIG. 14 is an axial cross-sectional view of a valve pin 1;
FIG. 15 is an axial cross-sectional view 2 of a gas distribution shaft;
fig. 16 is a schematic view of a launch tube structure.
Reference numerals:
1-seed box; 2-a vibrator; 3-a conveying section; 4-seed filling section; 5-a seed plate unit; 6-a transmitting tube; 7-a first acceleration chute; 8-a first U-shaped tube; 9-vertical straight pipe; 10-a second U-shaped tube; 11-injection inclined tube; 12-outer ring surface of the seed-metering disc; 13-inner ring surface of the seeding plate; 14-seed spoon; 15-a first cover plate; 16-bearing housing bore; 17-large belt pulley; 18-a first air vent; 19-a sealing ring; 20-a tray body; 21-adjusting the partition plate; 22-a fixed partition; 23-high pressure gas step; 24-a first support rib; 25-a second support rib; 26-a third support rib; 27-shaft hole step; 28-a through slot; 29-a non-through slot; 30-high pressure gas connection; 31-a bolt; 32-a first column section; 33-a second section; 34-a third column section; 35-a fourth column section; 36-a fifth column section; 37-a first keyway; 38-a first vent channel; 39-shaft shoulder; 40-an annular trench; 41-barrel section; 42-vertebral body segment; 43-a valve plate; 44-leakage holes; 45-a tripod; 46-launch tube support arm; 47-launch tube collar; 48-a negative pressure capture zone; 49-atmospheric zone; 50-a first end face; 51-a second end face; 52-an arc cylindrical cavity; 53-arc opening; 54-seed injection port; 55-seed return port; 56-first flat bond; 57-a second keyway; 58-second flat bond; 59-second acceleration ramp.
Detailed Description
The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form a part hereof, and which together with the embodiments of the invention serve to explain the principles of the invention and not to limit its scope.
In one aspect, the invention provides a nut seed discharging and refluxing method, which comprises the following processes: a seeding process, a backflow process and a seed launching process are carried out by utilizing the seeding plate unit;
the seeding process by the seeding plate unit 5: seeds are supplied to the position near the seed discharging disc unit 5, a gas distribution disc is embedded in the seed discharging disc unit 5, a negative pressure capturing area in the gas distribution disc provides negative pressure for a seed spoon of the seed discharging disc, the seed discharging disc captures the nearby seeds under the action of the negative pressure, and the seeds fall into the seed spoon; the seed discharging disc of the seed discharging disc unit 5 continues to run, the seed spoon is transported at a certain angle, and the seed spoon on the seed discharging disc rotates to the emission position to emit the seeds.
It should be noted that, the seed launching process is as follows: after the seed spoon rotates to the position aligned with the launching tube, the seeds in the seed spoon are launched out by utilizing high-pressure air provided by the high-pressure air step on the air distribution plate.
When the initial launching speed of the seeds can not meet the requirement of sowing penetration depth, a first accelerating inclined tube 7 is arranged on the launching tube 6; first accelerating inclined tube 7 with locate the one-level high pressurized air source intercommunication on the unmanned aerial vehicle, first accelerating inclined tube is used for accelerating the seed in the launching tube.
In order to increase the seed emission speed, a second acceleration inclined tube 59 is arranged below the first acceleration inclined tube 7, and the second acceleration inclined tube 59 is communicated with a secondary high-pressure air source arranged on the unmanned aerial vehicle; the axial included angle between the second accelerating inclined tube 59 and the launching tube 6 is smaller than the axial included angle between the first accelerating inclined tube 7 and the launching tube 6; the pressure of the high-pressure gas of the secondary high-pressure gas source is greater than that of the high-pressure gas of the primary high-pressure gas source.
Compared with the prior art, the invention can ensure that the seeds have higher launching speed and can penetrate through the soil surface layer by arranging the first acceleration inclined tube 7 and the second acceleration inclined tube 59.
When the seeds do not fall into the seed scoop 14, the seeds enter the backflow section of the seed conveying unit and flow back into the seed box 1. The seed refluxing process comprises the following steps: high-pressure high-speed airflow is introduced into the injection inclined tube 11 of the backflow section, flows out after passing through the second U-shaped tube 10, and meanwhile seeds which are not captured by the seed plate in the seed filling section 4 of the seed conveying unit sequentially enter the first U-shaped tube 8, the vertical straight tube 9 and the second U-shaped tube 10 and then flow back into the seed box 1.
The process of establishing negative pressure and capturing seeds in the negative pressure capturing area comprises the following steps: starting a negative pressure machine, and vacuumizing the negative pressure capturing area by the negative pressure machine through a negative pressure joint, a plurality of vent grooves on the air distribution shaft and a plurality of through grooves 28 on the step of the shaft hole to form certain negative pressure in the negative pressure capturing area; after a certain negative pressure is established in the negative pressure capturing area, the outside air enters the seed spoon through the air leakage hole in the seed filling section 4 and then enters the negative pressure capturing area through the seed spoon 14 and the first air hole 18, the outside air pushes the seeds into the seed spoon 14 from the seed filling section 4 when entering the negative pressure capturing area, and the seeds are fixed in the seed spoon 14 corresponding to the negative pressure capturing area due to the adsorption effect of the negative pressure.
When the launching angle of the launching tube needs to be adjusted, the launching tube 6 is rotated to a set angle through the supporting unit; the supporting unit comprises a triangular bracket 45, a launching tube support arm 46 and a launching tube hoop 47; the triangular support 45 is fixedly connected with the unmanned aerial vehicle; the triangular bracket 45 is hinged with a gas distribution shaft of the seed plate unit 5; one end of the launching tube support arm 46 is hinged with the air distribution shaft, the other end of the launching tube support arm is fixedly connected with a launching tube clamp 47, and the launching tube clamp 47 is used for installing the launching tube 6.
When the launching angle of the launching tube 6 needs to be adjusted, the launching tube support arm 46 is rotated, the launching tube support arm 46 drives the air distribution shaft of the seeding plate unit 5 to rotate, and the air distribution shaft drives the seeding plate to synchronously rotate; when the seed plate rotates, the area of the negative pressure capture area is adjusted to correspond to the position of the seed charging section 4 of the seed conveying unit.
The invention utilizes the driving unit to drive the seed discharging disc to rotate; the driving unit comprises an engine, a driving wheel and a belt, the engine is arranged on the triangular bracket 45, the driving wheel is directly arranged on an output shaft of the engine, and the driving wheel and the seed metering disc are driven by the belt to drive the seed metering disc to rotate.
On the other hand, the invention also provides a seed sowing disc device for the unmanned aerial vehicle, which is used for realizing the seed sowing and backflow method of the nut seeds; the seed sowing disc device for the unmanned aerial vehicle comprises a seed box unit, a seed sowing disc unit 5, a driving unit, a seed conveying unit and a transmitting tube unit; the seed box unit is arranged above the seed discharging disc unit 5, and the seed box unit is communicated with the seed discharging disc unit 5 through a seed conveying unit; the seed conveying unit comprises a conveying section 3 and a seed filling section 4, one end of the conveying section 3 is communicated with the seed box unit, and the other end of the conveying section is communicated with the seed filling section 4; the seed discharging plate unit 5 includes a negative pressure capturing area and a normal pressure area; the seed filling section 4 covers the negative pressure capturing area and is communicated with the negative pressure capturing area, and seeds provided by the seed box unit pass through the conveying section 3 and the seed filling section in sequence and are adsorbed in the seed sowing disc unit 5 under the adsorption action of the negative pressure capturing area; the launching tube unit is arranged below the seed sowing plate unit 5 and is positioned on a boundary line of the negative pressure capturing area and the normal pressure area; the transmitting tube unit is communicated with the seed plate unit 5, the seed plate unit 5 is connected with the driving unit, the driving unit can drive the seed plate assembly to rotate, the seed plate unit 5 can capture and arrange seeds when rotating, and the captured and arranged seeds are transmitted out through the transmitting tube 6.
Specifically, as shown in fig. 1 to 12, the seed plate device for the unmanned aerial vehicle of the present invention mainly includes a seed box unit, a seed plate unit 5, a driving unit, a seed conveying unit, and a launching tube unit, wherein the seed box unit is used for storing seeds, the seed box unit and the seed plate unit 5 are designed in a separated manner, and the seed box unit is disposed above the seed plate unit 5. The working process of the seed metering disc device for the unmanned aerial vehicle is as follows: the seeds in the seed box unit enter the seed filling section through the conveying section 3 of the seed conveying unit, and the seed filling section covers the negative pressure capturing area of the seed discharging disc unit 5 and is communicated with the negative pressure capturing area, so the seeds stay in the seed discharging disc unit 5 due to the negative pressure adsorption after entering the seed discharging disc unit 5, when the driving unit drives the seed discharging disc unit 5 to rotate, the seeds in the seed filling section 4 can continuously enter the seed discharging disc unit 5, and meanwhile, when the seeds in the seed discharging disc unit 5 pass through the transmitting pipe unit, the seeds can be transmitted out through the transmitting pipe unit and are sown on the ground.
The seed box 1 and the seed discharging plate in the prior art mostly adopt a semi-embedded design, and the seed discharging plate unit 5 cannot be replaced according to the size of the seeds in the design mode, so that the seed box can only sow seeds with a single size. Compared with the prior art, the seed box unit and the seed discharging disk unit 5 adopt a separated design, aiming at seeds with different sizes, the seed discharging disk unit 5 can be replaced according to the sizes of the seeds, and the applicability of the seed discharging device is further improved.
As shown in fig. 1 to 6, in order to capture and arrange seeds at a fixed interval, the seed discharging plate unit 5 of the present invention includes a seed discharging plate; the interior of the seed plate is provided with an annular cake-shaped structure with a cavity, the seed plate comprises an annular seed plate outer ring surface 12, a seed plate inner ring surface 13, a first plate surface 51 and a second plate surface 50 which are arranged oppositely, a first cover plate 15 is arranged on the first plate surface 51 of the seed plate, and the second plate surface 50 of the seed plate is in an open state (namely, the cover plate is not arranged); the seed scoops 14 are circumferentially arranged on the outer ring surface 12 of the seed plate at equal intervals along the outer ring surface, the seed scoops 14 are grooves formed along the radial direction of the seed plate, first air holes 18 along the radial direction of the seed plate are formed in the bottom of the seed scoops 14, and the seed scoops 14 are communicated with the inner ring surface through the corresponding first air holes 18; the aperture of the seed spoon 14 is larger than that of the corresponding first air hole 18, and the hole of the seed spoon 14 is arranged along the radial direction of the seed metering disc.
The air distribution plate is arranged in the inner cavity of the seed plate (as shown in figures 2 and 10), and the outer ring surface of the air distribution plate is attached to the inner ring surface 13 of the seed plate; the centers of the first cover plates 15 of the air distribution disc and the seed sowing disc are both provided with center holes, and an air distribution shaft penetrates through the center holes; one end of the air distribution shaft is an open end, the other end of the air distribution shaft is a closed end, the open end of the air distribution shaft is connected with the negative pressure joint, a plurality of vent grooves are formed in the air distribution shaft, and the air distribution shaft is communicated with the negative pressure capturing area of the air distribution disc through the vent grooves; the negative pressure joint is connected with a negative pressure machine, and the negative pressure machine sucks air from the negative pressure capturing area through the negative pressure joint and the vent grooves on the air distribution shaft to form negative pressure so that seeds are adsorbed in the seed spoon 14.
Specifically, the seed plate unit 5 of the present invention is a core component of a seed plate device for an unmanned aerial vehicle, the seed plate is used for capturing seeds, the seed plate unit 5 includes a seed plate, a gas distribution shaft and a negative pressure joint, wherein the seed plate is shaped like a disk, a cavity is provided inside the seed plate, the seed plate includes a circular outer annular surface and a circular inner annular surface, the circular inner annular surface is formed by the cavity, one end surface of the seed plate is in an open state, and a first cover plate 15 is provided on the other end surface. The seed scoops 14 are arranged on the outer annular surface 12 of the seed plate at equal intervals, for example, the arrangement number of the seed scoops 14 is 20, the seed scoops 14 are communicated with the seed filling section outwards and communicated with the negative pressure capturing area inwards through the first air holes 18, after the negative pressure machine is started, the negative pressure machine pumps air to the negative pressure capturing area through the negative pressure connectors and the air vent grooves on the air distribution shaft to form negative pressure, and the negative pressure capturing area is communicated with the seed scoops 14 through the first air holes 18, so the seed scoops 14 can capture seeds and contain the seeds, and the seeds are prevented from flying out of the seed scoops 14 when the seed plate rotates.
In conclusion, the seed discharging disc has the functions of ensuring dynamic air tightness, capturing seeds, discharging, transmitting and centering. The invention ensures that the seeds cannot leak to the outside by the clearance fit of the outer ring surface 12 of the seed sowing plate and the seed filling section 4. The gap between the inner annular surface 13 of the seed discharging plate and the air distribution plate is dynamically sealed by a contact type sealing ring so as to ensure the establishment of the vacuum degree of a negative pressure capture area in the air distribution plate and have enough attraction force to capture seeds.
In order to fill the gap between the seed spoon 14 and the seeds to a certain extent, reduce air leakage and improve the utilization rate of an air source, as shown in fig. 4, the seed spoon 14 is a cylindrical cavity, a sealing ring 19 is arranged in the seed spoon 14, and the radiuses of the seed spoon 14, the sealing ring 19 and the first air hole 18 are sequentially reduced.
Specifically, as shown in the figure, set up sealing ring 19 in the cylindrical cavity of kind spoon 14, sealing ring 19 is in the bottommost of cylindrical cavity, and the seed of catching in kind spoon 14 is in sealing ring 19, because sealing ring 19's radius is less than kind spoon 14's radius, and then can reduce the clearance between seed and the kind spoon 14, reduces the air leakage, improves the air supply rate of utilization.
In order to ensure that the seeds are captured and contained in the seed scoop 14, as shown in fig. 13, the seed filling section 4 of the present invention is provided with a seed injection port 54 and a seed return port 55 at two ends thereof, an arc-shaped cylindrical cavity 52 is provided between the seed injection port 54 and the seed return port 55, an arc-shaped opening 53 is provided inside the arc-shaped cylindrical cavity 52, and the radian of the arc-shaped opening 53 is equal to the radian of the arc-shaped cylindrical cavity 52; the arc-shaped cylindrical cavity 52 of the seed charging section 4 is matched with the shape of the seed discharging disc, and the arc-shaped opening 53 of the arc-shaped cylindrical cavity 52 covers the negative pressure capturing area and is communicated with the negative pressure capturing area; seeds provided by the seed box unit enter the seed filling section 4 through the conveying section 3, and then are absorbed in the seed spoon of the seed metering disc through the negative pressure of the negative pressure capturing area.
As shown in FIGS. 10 and 13, the seed charging section 4 of the present invention is provided to ensure that the seeds are captured by the seed plate structure, and a negative pressure capturing area is provided in the seed plate structure, the negative pressure capturing area is communicated with the seed charging section 4 through an arc-shaped opening 53, and the arc-shaped opening 53 and the negative pressure capturing area are dynamically sealed. In addition, a plurality of air leakage holes 44 are uniformly distributed on the outer side surface of the arc-shaped cylindrical cavity 52 along the arc length direction at equal intervals, and air can push seeds into the seeding plate structure when being sucked into the negative pressure capturing area through the air leakage holes 44. In order to ensure that seeds can be captured, as shown in fig. 5 to 6, the gas distribution plate of the present invention includes a plate body 20, a shaft hole step 27, a second cover plate, an adjusting partition plate 21, a fixing partition plate 22, a high pressure gas step 23, and a high pressure gas joint 30; the tray body 20 is nested in the cavity of the seed tray, and the outer annular surface of the tray body 20 is attached to the inner annular surface 13 of the seed tray (as shown in fig. 2 and 10); the shaft hole step 27 is arranged at the center of the disc body 20, the second cover plate is provided with a central hole, and the central hole is attached to the outer shaft surface of the shaft hole step 27; the air distribution shaft penetrates through the shaft hole step 27 and the central hole in the second cover plate; a plurality of through grooves 28 and a plurality of non-through grooves 29 are arranged on the shaft hole step 27, the through grooves 28 correspond to the ventilating grooves on the gas distribution shaft in position and are communicated with each other, the adjusting partition plate 21 and the fixed partition plate 22 are arranged on the tray body 20, and one end of the adjusting partition plate 21 is inserted into the non-through grooves 29; one end of the fixed partition plate 22 is fixed on the shaft hole step 27; the other end of the fixed partition plate 22 is connected with a high-pressure air step 23, and the outlet end of the high-pressure air step 23 is one end far away from the fixed partition plate 22; the sum of the length of the fixed partition 22 and the length of the high pressure gas step 23 is equal to the length of the adjusting partition 21; the adjusting partition plate 21 is used as the starting boundary of the negative pressure capture area and the ending boundary of the normal pressure area to be inserted into the non-through groove 29 on the shaft hole step 27, the high-pressure air step 23 is connected with the fixed partition plate 22 and jointly forms the ending boundary of the negative pressure capture area and the starting boundary of the normal pressure area (the starting boundary and the ending boundary of the negative pressure capture area are arranged to prevent the air leakage of the seed spoon 14 of the non-seed-charging area on the seed discharging plate); the area enclosed by the second cover plate, the plate body 20 of the air distribution plate and the inner annular surface 13 of the seed metering plate comprises a negative pressure capture area and a normal pressure area; the second cover plate is provided with a high-pressure air joint 30 hole, the high-pressure air joint 30 penetrates through the high-pressure air joint 30 hole and is communicated with the high-pressure air step 23, and the driving unit can drive the seed discharging disc to rotate so that the seed spoon 14 is aligned with the outlet end of the high-pressure air step 23; the launching tube 6 is arranged on the outer annular surface 12 of the seed sowing disc, the launching tube 6 is communicated with the seed spoon 14 aligned with the outlet end of the high-pressure air step 23, the high-pressure air joint 30 is connected with a high-pressure air source, high-pressure air provided by the high-pressure air source enters the seed spoon 14 through the high-pressure air joint 30 and the high-pressure air step 23, and seeds in the seed spoon 14 are blown into the launching tube 6 and are launched out.
Specifically, the air distribution plate of the invention is used for providing and distributing air pressure for capturing and blowing seeds to the seed metering plate, and the specific process for capturing and blowing seeds by using the air distribution plate is as follows: the seeds in the seed box 1 enter the seed filling section through the conveying section 3, meanwhile, the negative pressure capturing area is vacuumized by the negative pressure machine, specifically, the negative pressure capturing area is vacuumized by the negative pressure machine through the negative pressure joint, the vent groove on the air distribution shaft and the through groove 28 on the shaft hole step 27, after a certain negative pressure is formed in the negative pressure capturing area, the negative pressure capturing area is communicated with the seed spoon 14 through the first air hole 18, so that the air in the seed spoon 14 flows to the negative pressure capturing area, a certain negative pressure adsorption effect is formed in the seed spoon 14, and the seeds are captured and contained in the seed spoon 14; the seed plate continues to operate, the seeds are continuously captured and contained by the seed spoon 14 communicated with the negative pressure capture area, the captured seeds are transported by the seed plate (rotating for a certain angle), and after the seed spoon 14 of the seed plate rotates to a launching position (indicating a position aligned with the launching tube 6), high-pressure air provided by the high-pressure air source enters the seed spoon 14 through the high-pressure air connector 30 and the high-pressure air step 23, and the seeds in the seed spoon 14 are blown into the launching tube 6 and are launched out.
Compared with the prior art, the seed spoon 14 is communicated with the negative pressure capturing area, seeds are captured by the negative pressure, the seeds are contained in the seed spoon 14, and the seeds are emitted out through the emission tube 6 by high-pressure air, so that a certain initial speed can be given to the seeds, the seeds can be ensured to penetrate through a deeper soil layer, the seeds are prevented from falling down only by means of gravity, and the penetration depth is low. In addition, the seed can also improve the seeding precision through launching tube launch, has solved the problem that the aerial seeder seeding precision through getting rid of kind of a dish seeding among the prior art is low.
As shown in fig. 11, in order to fix the seed metering device on the unmanned aerial vehicle, the seed metering disc device for the unmanned aerial vehicle further comprises a supporting unit, wherein the supporting unit comprises a triangular bracket 45, a launching tube support arm 46 and a launching tube clamp 47; the triangular support 45 is fixedly connected with the aerial platform, one corner of the triangular support 45 is hinged with the gas distribution shaft, and the other two corners are fixedly connected with the seed filling section 4; one end of the launching tube support arm 46 is hinged with the gas distribution shaft, the other end of the launching tube support arm is fixedly connected with a launching tube 6 installation clamp, and the launching tube clamp 47 is used for installing the launching tube 6; a bearing seat hole 16 and a large belt wheel 17 in an annular boss shape are arranged on the end face, far away from the negative pressure capturing area, of the first cover plate 15 along the central hole outwards in sequence; a bearing is arranged between the bearing seat hole 16 and the air distribution shaft; the outer ring surface of the large belt wheel 17 in the shape of an annular boss is a belt surface; the driving unit comprises an engine, a driving wheel and a belt, the engine is arranged on the triangular support 45, the driving wheel is directly arranged on an output shaft of the engine, and the driving wheel and the large belt wheel 17 are driven by the belt to drive the seed discharging disc to rotate.
Specifically, a triangular support 45 and aerial platform (for example unmanned aerial vehicle) fixed connection, the one end and the distribution shaft of triangular support 45 are articulated, in addition both ends fill upper end and lower extreme fixed connection of section 4 with the arc respectively, launching tube support arm 46 is cuboid platelike, one end of launching tube support arm 46 is the semicircle type, another end is the cuboid form, be equipped with central through hole on this semicircle type tip, the distribution shaft runs through this central through hole, the semicircle type tip outside is fastening nut, fastening nut and distribution shaft threaded connection, be used for with the one end of triangular support 45 and the semicircle type tip fastening of launching tube support arm 46 on the distribution shaft. It should be noted that two threaded holes are provided on the rectangular parallelepiped end of the launch tube support arm 46, each threaded hole is provided with a bolt 31, and the launch tube clip 47 is fixedly connected to the launch tube support arm 46 through the bolt 31.
The launch tube unit of the present invention comprises a launch tube 6; as shown in fig. 16, the launching tube 6 is fixed at one end of a launching tube clamp 47, the other end of the launching tube clamp 47 is fixedly connected with one end of a launching tube support arm 46, and the other end of the launching tube support arm 46 is fixedly connected with a triangular bracket 45; the launching tube 6 is arranged below the seed sowing disc device for the unmanned aerial vehicle and corresponds to a spraying port of the seeds; a first accelerating inclined tube 7 is arranged on the launching tube 6; the first accelerating inclined tube 7 is communicated with a one-stage high-pressure air source arranged on the unmanned aerial vehicle.
The emitter tube structure of the present invention is used for the emission of nut seeds and/or for the emission of seed capsules for cash crop seeds. The nut seeds include walnut, chestnut, water caltrop, ginkgo nut, apricot kernel, pistachio nut, various melon seeds and acorn with hard shell. In addition, some economic crop seeds which have no hard shell and are irregular in shape can be launched by encapsulating, namely, nutrient components such as fertilizer and the like wrap the seeds to form a spherical object to form a seed capsule.
It should be noted that, whether the nut seeds or the seed capsules are used, the seeds can penetrate the ground surface at a high speed when being launched, and the seeds have a hard shell or capsule protection, so that the internal structure of the seeds cannot be affected when penetrating into the soil, that is, the germination rate of the seeds cannot be affected.
In order to increase the seed launching speed, as shown in fig. 16, a second acceleration inclined tube 59 is arranged below the first acceleration inclined tube 7, and the second acceleration inclined tube 59 is communicated with a secondary high-pressure air source arranged on the unmanned aerial vehicle; the axial included angle between the second accelerating inclined tube 59 and the launching tube 6 is smaller than the axial included angle between the first accelerating inclined tube 7 and the launching tube 6; the pressure of the high-pressure gas of the secondary high-pressure gas source is greater than that of the high-pressure gas of the primary high-pressure gas source.
Compared with the prior art, the invention can ensure that the seeds have higher launching speed and can penetrate through the surface layer of the soil by arranging the first accelerating inclined tube 7 and the second accelerating inclined tube 59.
The radius of the large pulley 17 is larger than the radius of the bearing housing hole 16, the radius of the bearing housing hole 16 is larger than the radius of the hollow hole, and the air distribution shaft penetrates through the bearing housing hole 16 and the large pulley 17 in the shape of an annular boss. The inner cylindrical surface of the bearing seat hole 16 is a positioning surface matched with the bearing, a shaft shoulder 39 is arranged at one end close to the closed end of the air distribution shaft, the shaft shoulder 39 is used for limiting the bearing to move in the axial direction of the air distribution shaft, an annular groove 40 is arranged at one end close to the open end of the air distribution shaft, and a retainer ring is arranged in the annular groove 40 and is also used for limiting the bearing to move in the axial direction of the air distribution shaft. The outer cylindrical surface of the large belt pulley 17 in the shape of an annular boss is a working surface matched with the conveyor belt.
It should be noted that, as shown in fig. 7 and 8, the gas distribution shaft of the present invention is a mounting base of the gas distribution plate, and the gas distribution shaft has the functions of fastening, centering and gas distribution. The gas distribution shaft is in a hollow column shape and sequentially comprises a first column section 32, a second column section 33, a third column section 34, a fourth column section 35 and a fifth column section 36 from the closed end to the open end; wherein, the first column section 32 is provided with an external thread which is used for installing a gas distribution plate nut so as to fix the gas distribution plate; the second column section 33 is used for installing and positioning the air distribution plate, the plurality of vent grooves include a first vent groove 38, a second vent groove and a third vent groove, the three vent grooves are all arranged on the second column section 33 along the radial direction, the plurality of through grooves 28 on the shaft hole step 27 of the air distribution plate include a first through groove 28, a second through groove 28 and a third through groove 28, the first through groove corresponds to the first vent groove 38 and is communicated with the first vent groove, the second through groove corresponds to the second vent groove and is communicated with the second vent groove, the third through groove corresponds to the third vent groove and is communicated with the third vent groove, and the three through grooves 28 and the three vent grooves are arranged to vacuumize the negative pressure capture area by using the air distribution shaft.
The third column section 34 is used for mounting a bearing, and a shaft shoulder 39 is arranged between the second column section 33 and the third column section 34, wherein the shaft shoulder 39 is an axial positioning end face of the air distribution plate and is used for limiting the axial position of the bearing. An annular groove 40 is formed between the third column section 34 and the fourth fifth column section, and the annular groove 40 is used for installing a shaft retainer which is used for limiting the movement of the bearing. Fourth column section 35 is adapted to mount a triangular bracket 45 and a launch tube arm 46, wherein the end near shoulder 39 mounts triangular bracket 45 and the end remote from shoulder 39 mounts launch tube arm 46. The fifth column section 36 is provided with an internal thread for mounting a negative pressure connection.
Be equipped with the external screw thread on the blind end of distribution shaft and the open end, all be equipped with fastening nut on the external screw thread, the fastening nut of blind end fastens the second apron with the external screw thread fit of distribution shaft, prevents that the second apron from dropping from the distribution shaft, and the fastening nut of open end fastens launching tube support arm 46 with the epaxial external screw thread fit of distribution, prevents to take place relative slip between launching tube support arm 46 and the distribution shaft.
It should be noted that, as shown in fig. 7, 8, 14 and 15, a first key groove 37 and a first flat key 56 are provided on the fourth column section 35, and a corresponding groove is provided on the launch tube arm 46, and the first key groove 37 and the groove are used for accommodating the first flat key 56, so that the first flat key 56 can block the launch tube arm 46 and the gas distribution shaft, and when the launch tube arm 46 rotates, the launch tube arm 46 and the gas distribution shaft synchronously rotate.
In addition, a second key groove 57 and a second flat key 58 are arranged on the second column section 33, a groove is also arranged on the inner wall of the central hole of the shaft hole step 27 of the gas distribution shaft, the second key groove 57 and the cover groove are used for accommodating the second flat key 58, so that the second flat key 58 can clamp the gas distribution plate and the gas distribution shaft, and when the gas distribution shaft rotates due to the driving of the transmitting tube support arm 46, the gas distribution shaft and the gas distribution plate can synchronously rotate.
The angle adjustment process of the transmitting tube comprises the following steps: when the launching angle of the launching tube is adjusted by rotating the launching tube support arm 46, the fastening nut at the negative pressure joint is unscrewed, the launching tube support arm 46 is rotated, at the moment, the air distribution shaft clamped with the launching tube support arm 46 through the first key groove 37 and the first flat key 56 can rotate synchronously with the launching tube support arm 46, the rotation of the air distribution shaft can drive the air distribution disc to rotate, the rotation angle of the air distribution disc is the same as that of the launching tube support arm 46, after the launching tube is adjusted in angle, the nut at the negative pressure joint is screwed, at the moment, the launching angle of the launching tube 6 is fixed, and the relative angle between the launching tube support arm 46 and the air distribution disc is ensured. At this time, in order to ensure the sealing property in the negative pressure capturing area, the adjusting partition plate is inserted into the corresponding non-through groove, so that the negative pressure range of the negative pressure capturing area is adjusted to correspond to the structure of the seed charging section 4.
Be equipped with the external screw thread on the blind end of distribution shaft and the open end, all be equipped with fastening nut on the external screw thread, the fastening nut of blind end fastens the second apron with the external screw thread fit of distribution shaft, prevents that the second apron from dropping from the distribution shaft, and the fastening nut of open end fastens launching tube support arm 46 with the epaxial external screw thread fit of distribution, prevents to take place relative slip between launching tube support arm 46 and the distribution shaft.
It should be noted that the gas distribution shaft is sequentially provided with a fastening nut, a second cover plate, a shaft hole step 27, a gas distribution disc body 20, a first cover plate 15, a bearing seat hole 16, a triangular bracket 45, a launching tube support arm 46 and a negative pressure joint from a closed end to an open end.
When the existing seed metering device seeds, the emission angle of the seeds can not be adjusted. Compared with the prior art, the invention can realize the adjustment of the seed emission angle, and the specific process is as follows: when the launching angle of the launching tube 6 needs to be adjusted, the launching tube support arm 46 rotates for a certain angle around the air distribution shaft and then is fastened by the fastening nut, and when the launching tube support arm 46 rotates, the launching tube support arm 46 drives the launching tube clamp 47 to rotate for a certain angle, so that the launching angle adjustment of the launching tube 6 is finally achieved. In addition, it should be noted that when the angle of the launching tube 6 is adjusted, the inserting position of the adjusting partition 21 needs to be adjusted again to avoid the air leakage of the normal pressure region (i.e. the non-seed charging region) and the situation that the negative pressure capturing region has no negative pressure.
As shown in fig. 1, in order to return the seeds that are not caught to the seed box 1, the seed conveying unit of the present invention further includes a return section and an injection inclined pipe 11; the middle part of the reflux section is a vertical straight pipe 9, two ends of the reflux section are respectively provided with a first U-shaped pipe 8 and a second U-shaped pipe 10, the first U-shaped pipe 8 is communicated with the tail end of the seed filling section 4, and the outlet end of the second U-shaped pipe 10 extends to the upper part of the seed box unit; the injection inclined pipe 11 is arranged on the second U-shaped pipe 10, and an air inlet of the injection inclined pipe 11 is connected with a high-pressure air source; by introducing high-pressure high-speed airflow into the injection inclined pipe 11, seeds which cannot be captured by the seed discharging disc in the seed filling section 4 can sequentially flow back to the seed box unit through the first U-shaped pipe 8, the vertical straight pipe 9 and the second U-shaped pipe 10.
Specifically, the invention utilizes the high-pressure high-speed airflow injection principle to lead seeds which are not captured by the seed metering disc to flow back to the seed box 1, and the specific process comprises the following steps: after introducing high-pressure high-speed airflow into the injection inclined pipe 11, the high-pressure high-speed airflow (compressed air) can flow out after passing through the second U-shaped pipe 10 along the current direction, the air in the vertical straight pipe 9 and the first U-shaped pipe 8 below can flow out together with the high-pressure high-speed airflow along the upper part under the influence of injection effect, at the moment, the vertical straight pipe 9 and the first U-shaped pipe 8 are in a negative pressure state, the external air can flow into the seed filling section 4 from air leakage holes 44 which are arranged on the outer side surface of the cavity of the seed filling section 4 at equal intervals, the uncaptured seeds and the external air reach the vertical straight pipe 9 through the first U-shaped pipe 8, and are sprayed out together when passing through the injection inclined pipe 11 and flow back into the seed box 1.
In order to control the flow of seeds into the seed metering disc, as shown in fig. 9, the seed box unit of the present invention comprises a seed box 1, a power unit and a valve plate 43; the tank 1 comprises a cylinder section and a cone section, illustratively, a cube section 41 and a quadrangular pyramid section 42, the cylinder section 41 being arranged above the quadrangular pyramid and communicating with each other; a valve plate 43 is arranged at the outlet of the conical bottom of the rectangular pyramid, the valve plate 43 is connected with a power device, and the power device drives the valve plate 43 to move so as to control the flow of seeds in the seed box 1 entering the seed metering disc.
Compared with the prior art, the flow and the flow velocity of the seeds entering the seeding apparatus in the box body can be controlled by controlling the opening degree of the valve plate 43.
As shown in fig. 9, in order to prevent the seeds from being blocked at the valve plate 43 at the bottom of the seed box 1, the seed box unit of the present invention further comprises a vibrator 2, the vibrator 2 is disposed on one conical surface of the rectangular pyramid, the vibrator 2 (vibration motor) can drive the seeds in the seed box 1 to shake together, so as to prevent the seeds from being blocked at the valve plate 43, and finally, the seeds can be ensured to be discharged smoothly.
In order to mount the second cover plate and prevent the second cover plate and the plate body 20 from deforming under the action of negative pressure, the gas distribution plate of the invention further comprises a plurality of support rib plates and a plurality of fasteners (such as bolts 31), wherein both ends of each support rib plate are provided with threaded holes, and the number of the bolts 31 is the same as that of the threaded holes; threaded holes which are the same as the threaded holes on the support rib plates in number and correspond to the threaded holes in the positions are also formed in the disc body 20 of the air distribution disc and the second cover plate; the plurality of bolts 31 respectively penetrate through the second cover plate, the support rib plate and corresponding threaded holes in the plate body 20 of the air distribution plate, and the support rib plate is used for supporting and mounting the second cover plate.
Specifically, as shown in fig. 5 and 6, a plurality of support ribs are provided on the air distribution plate of the present invention, the plurality of support ribs includes a first support rib 24, a second support rib 25, and a third support rib 26, and the first support rib 24 to the third support rib 26 are uniformly arranged in the circumferential direction of the plate body 20 of the air distribution plate, that is, the first support rib 24 to the third support rib 26 are at an angle of 60 ° with respect to each other. It is noted that the first and second support ribs 24, 25 are in the negative pressure capture zone and the third support rib 26 is in the normal pressure zone. In order to avoid the first support rib 24 and the second support rib 25 from blocking the flow of air in the negative pressure trapping region, therefore, the length of the first support rib 24 to the third support rib 26 is controlled to be smaller than the length of the adjustment partition 21.
It should be noted that, threaded holes are respectively disposed at two ends of the first supporting rib plate 24 to the third supporting rib plate 26, and 6 threaded holes are respectively disposed on the tray body 20 and the second cover plate of the air distribution tray, and 6 bolts 31 sequentially penetrate through the second cover plate, each supporting rib plate and the threaded holes on the tray body 20 of the air distribution tray, so that the second cover plate covers the tray body 20 of the air distribution tray, and when air is extracted from the negative pressure capturing area, the first supporting rib plate 24 to the third supporting rib plate 26 can support the second cover plate and the tray body 20 of the air distribution tray, thereby preventing the second cover plate and the tray body 20 of the air distribution tray from deforming and collapsing due to the negative pressure effect in the negative pressure capturing area.
In conclusion, the working process of the seed sowing device provided by the invention is as follows: the valve plate 43 is driven to move by the power device to open the valve plate 43, seeds fall into the seed filling section 4 through the conveying section 3 after the valve is opened, the seed filling section 4 is an arc-shaped half-opening cavity, the arc-shaped half-opening cavity is communicated with the seed spoon 14, the seed spoon 14 is communicated with the negative pressure capturing area through the first air hole 18, the negative pressure capturing area can continuously provide negative pressure for the seed spoon 14 on the seed plate, and under the action of the negative pressure, the seed plate captures the nearby seeds, namely the seeds in the seed filling section 4 are captured and contained in the seed spoon 14. As the seed plate is continuously rotated, the seeds in the seed filling section 4 can continuously enter the seed spoon 14. If the seeds can not fall into the seed spoon 14, the seeds can enter the first U-shaped pipe 8 of the backflow section, the inclined injection pipe 11 is arranged on the second U-shaped pipe 10, the air inlet of the inclined injection pipe 11 is connected with a high-pressure air source, when high-pressure high-speed airflow is introduced into the inclined injection pipe 11, the seeds which can not be captured by the seed discharging disc in the seed filling section 4 can sequentially flow through the first U-shaped pipe 8, the vertical straight pipe 9 and the second U-shaped pipe 10 to flow back into the seed box unit. For the captured seeds, when the seed plate is rotated to the shooting position (the position where the seed spoon 14 is aligned with the launching tube 6), high-pressure air provided by the high-pressure air source enters the seed spoon 14 through the high-pressure air connector 30 and the high-pressure air step 23, and the seeds in the seed spoon 14 are blown into the launching tube 6 and are shot out.
When the seed initial velocity unsatisfied seeding is worn deeply the demand, the seed jets out the back from kind spoon 14, and it continues the motion in launching tube 6 under inertia and drawing the effect of suction, when first accelerating pipe chute 7, through introducing first accelerating pipe chute 7 with high-pressure gas, the seed is accelerated once more to increase the emission velocity of seed, jet out after satisfying the initial velocity requirement.
Compared with the prior art, (1) the seed box unit and the seed discharging disk unit 5 of the invention adopt a separated design, aiming at seeds with different sizes, the seed discharging disk unit 5 can be replaced according to the sizes of the seeds, and the applicability of the seed discharging device is further improved; the seed box 1 and the seed discharging plate in the prior art are mostly designed in a semi-embedded mode, and the seed discharging plate unit 5 cannot be replaced according to the size of seeds in the design mode, so that the seed box and the seed discharging plate can only seed the seeds with a single size. (2) The present invention can adjust the angle of the launch tube 6 by using the launch tube support arm 46, thereby adjusting the launch angle of the seed. The emission tube 6 of the existing seed sowing device is vertical to the bottom surface, and the emission angle of seeds cannot be adjusted. (3) According to the invention, the first accelerating inclined tube 7 is arranged on the transmitting tube 6, so that the seeds can be accelerated for the second time, and the seeds can be ensured to penetrate through a deeper soil layer. The seed sowing device in the prior art mostly adopts gravity to drop seeds, and the seed penetration depth is lower.
While the invention has been described with reference to specific preferred embodiments, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims.
Claims (10)
1. A seed metering and refluxing method for nut seeds is characterized by comprising the following steps: a seeding process, a backflow process and a seed launching process are carried out by utilizing the seeding plate unit;
the seeding process by utilizing the seeding plate unit comprises the following steps: seeds are supplied to the position near the seed discharging disc unit, a gas distribution disc is embedded in the seed discharging disc unit, a negative pressure capturing area in the gas distribution disc provides negative pressure for a seed spoon of the seed discharging disc, the seed discharging disc captures the nearby seeds under the action of the negative pressure, and the seeds fall into the seed spoon;
the seed discharging disc of the seed discharging disc unit continues to operate, the seed spoon rotates to the emission position through transportation at a certain angle, and the seeds are emitted.
2. A method of seed metering and backstreaming of nut seeds as claimed in claim 1 wherein the seed shooting process is: after the seed spoon rotates to the position aligned with the launching tube, the seeds in the seed spoon are launched out by utilizing high-pressure air provided by the high-pressure air step on the air distribution plate.
3. The seed metering and refluxing method for nut seeds as claimed in claim 2, wherein when the initial launching velocity of the seeds cannot meet the requirement of seeding depth penetration, the launching tube is provided with a first accelerating inclined tube; first accelerating inclined tube with locate the one-level high pressurized air source intercommunication on the unmanned aerial vehicle, first accelerating inclined tube is used for accelerating the seed in the launching tube.
4. A seed metering and refluxing method for nut seeds as claimed in claim 3, wherein a second accelerating inclined tube is arranged below the first accelerating inclined tube, and the second accelerating inclined tube is communicated with a secondary high-pressure air source arranged on the unmanned aerial vehicle;
the second accelerating inclined tube is used for accelerating the seeds in the launching tube again.
5. A method of dispensing and returning nut seeds as claimed in claim 2 wherein when the seeds do not fall into the scoop, they enter the return section of the seed delivery unit and return to the seed box.
6. A method of seed metering and backstreaming of nut seeds as claimed in claim 5 wherein the seed backstreaming process is: high-pressure high-speed airflow is introduced into the injection inclined pipe of the backflow section, the high-pressure high-speed airflow flows out after passing through the second U-shaped pipe, and meanwhile, seeds which are not captured by the seed discharging disc in the seed filling section of the seed conveying unit sequentially enter the first U-shaped pipe, the vertical straight pipe and the second U-shaped pipe so as to flow back into the seed discharging box.
7. A method of dispensing and returning nut seeds as claimed in claim 1 wherein the negative pressure capture zone creates negative pressure and captures seeds by:
starting a negative pressure machine, and vacuumizing the negative pressure capturing area by the negative pressure machine through a negative pressure joint, a plurality of vent grooves on the air distribution shaft and a plurality of through grooves on the step of the shaft hole to ensure that a certain negative pressure is formed in the negative pressure capturing area;
after certain negative pressure was established in negative pressure capture area, outside air got into the kind spoon through the gas leakage hole that fills on the kind section, then got into the negative pressure capture area through kind spoon and first air vent in, outside air gets into the negative pressure capture area and can push the seed spoon with the seed section by filling when the district, and the seed is fixed in the kind spoon that the negative pressure capture area corresponds owing to receiving the negative pressure adsorption.
8. The seed metering and refluxing method for nut seeds as claimed in claims 1 to 7, wherein when the emission angle of the emission tube needs to be adjusted, the emission tube is rotated to a set angle by the supporting unit;
the supporting unit comprises a triangular bracket, a launching tube support arm and a launching tube hoop; the triangular support is fixedly connected with the unmanned aerial vehicle;
the triangular support is hinged with a gas distribution shaft of the seed discharging disc unit; the one end and the distribution shaft of launching tube support arm are articulated, and the other end and launching tube clamp fixed connection, the launching tube clamp is used for installing the launching tube.
9. The nut seed metering and return flow method of claim 8, wherein when the firing angle of the firing tube needs to be adjusted, the firing tube support arm is rotated, the firing tube support arm drives the air distribution shaft of the seed plate unit to rotate, and the air distribution shaft drives the seed plate to rotate synchronously;
when the seed discharging plate rotates, the area of the negative pressure capturing area is adjusted to correspond to the position of the seed charging section of the seed conveying unit.
10. The method of claim 9, wherein the drive unit is used to drive the rotation of the feed plate;
the driving unit comprises an engine, a driving wheel and a belt, the engine is mounted on the triangular support, the driving wheel is directly mounted on an output shaft of the engine, and the driving wheel and the seed sowing plate are driven by the belt to drive the seed sowing plate to rotate.
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| CN202210912324.7A CN115250681B (en) | 2022-07-29 | 2022-07-29 | Nut seed sowing and reflux method |
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| CN202210912324.7A CN115250681B (en) | 2022-07-29 | 2022-07-29 | Nut seed sowing and reflux method |
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| CN115250681B CN115250681B (en) | 2023-08-08 |
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| CN113575049A (en) * | 2021-09-17 | 2021-11-02 | 山东理工大学 | Pneumatic-bucket wheel combined type precise seed sowing device for single-seed sowing in residential area |
| CN113575040A (en) * | 2021-08-03 | 2021-11-02 | 四川美术学院 | Aircraft for agricultural seeding |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20060278726A1 (en) * | 2003-08-05 | 2006-12-14 | John Holly | Seed distribution method and apparatus |
| CN102090187A (en) * | 2010-12-21 | 2011-06-15 | 董臣 | Precise high-speed adjustable multifunctional seed-metering device |
| CN204069714U (en) * | 2014-09-17 | 2015-01-07 | 北京市农业机械研究所 | Become vapour-pressure type accurate nest eye seeds discharging box |
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| CN115250681B (en) | 2023-08-08 |
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