CN111788908A - Corn miss-seeding reseeding device and control system - Google Patents
Corn miss-seeding reseeding device and control system Download PDFInfo
- Publication number
- CN111788908A CN111788908A CN202010330850.3A CN202010330850A CN111788908A CN 111788908 A CN111788908 A CN 111788908A CN 202010330850 A CN202010330850 A CN 202010330850A CN 111788908 A CN111788908 A CN 111788908A
- Authority
- CN
- China
- Prior art keywords
- seed
- disc
- reseeding
- replenishing
- main shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C7/00—Sowing
- A01C7/20—Parts of seeders for conducting and depositing seed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Soil Sciences (AREA)
- Physics & Mathematics (AREA)
- Environmental Sciences (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Electromagnetism (AREA)
- Sowing (AREA)
Abstract
The invention discloses a corn miss-seeding reseeding device and a control system, which comprises a seed metering device, wherein the seed metering device consists of a seat shell I, a seed metering disc, a first seed charging cavity cover, a seed protecting plate I, a main shaft I, an outer clamping I, a rolling bearing I, a bearing end cover I and a bearing end cover II, the seat shell I is arranged below the seed metering device, the main shaft I is connected with the center of the seed metering disc through an external spline, the axial direction of the seed metering disc is limited by the outer clamping I, the first seed charging cavity cover is fixedly connected with one side of the seat shell, the seed protecting plate I is connected with the inner wall of the seat shell in a circumferential sliding manner, one end of the main shaft is rotatably connected with the center of the first seed charging cavity cover through the rolling bearing I, the other end of the main shaft is rotatably connected with the center of the shell through the rolling bearing I, the reseeding device is also included, the seed metering device is directly arranged adjacent to the seed metering device, the two, the miss-seeding rate of the corn precision seeder is reduced, and the seeding quality and the production efficiency are improved.
Description
Technical Field
The invention belongs to the technical field of seeders, and particularly relates to a corn miss-seeding reseeding device and a control system.
Background
The corn precision seeding is an important technology for improving the corn yield and saving the cost, in the corn planting process, the performance of a precision seeder is an important factor influencing the quality of corn seedlings and the yield, and a seed sowing device is a key part influencing the performance of the precision seeder.
At present, the most maize precision planter that uses domestically adopts mechanical type precision seed metering ware, because the influence of factors such as mechanical structure, field operation environment, the unavoidable phenomenon of broadcasting that appears in the seeding in-process leaks, for example: the single-side seed filling seed sowing device is adopted, and when uneven field operation is carried out, the operation equipment is inclined towards one side, so that seeding leakage is easily caused; in order to improve the operation effect of the seeder and the corn yield, the detection of the miss-seeding phenomenon and the real-time reseeding are the problems which need to be solved.
Disclosure of Invention
The invention provides a corn miss-seeding reseeding device and a control system, wherein one reseeding device is adopted to reseed two rows of seed metering devices, the structure is simple and compact, the reseeding accuracy and the real-time performance are high, the miss-seeding rate of a corn precision seeding machine can be effectively reduced, and the seeding quality and the production efficiency are improved.
In order to achieve the purpose, the invention adopts the technical scheme that: a corn miss-seeding reseeding device comprises a seed sowing device, wherein the seed sowing device consists of a seat shell I, a seed sowing disk, a first seed filling cavity cover, a seed protecting plate I, a main shaft I, an outer clamping I, a rolling bearing I, a bearing end cover I and a bearing end cover II, the seat shell I is arranged below the seeder, the main shaft I is connected with the center of the seed metering disc through an external spline, the seed discharging disc is axially limited by an external clamp, the first seed filling cavity cover is fixedly connected with one side of the seat shell, the seed protection plate I is connected with the inner wall of the seat shell in a circumferential sliding mode, one end of a main shaft is rotatably connected with the center of a first seed filling cavity cover through a rolling bearing I, the other end of the main shaft is rotatably connected with the center of the shell through a rolling bearing I, a bearing end cover I is connected with the center end face of the first seed filling cavity cover, a bearing end cover II is connected with the center end face of the shell, the seed supplementing device further comprises a seed supplementing device, and the seed supplementing device is directly arranged on an adjacent seed metering device.
The reseeding device consists of a seat shell II, a left reseeding disc, a right reseeding disc, a left reseeding cavity cover, a right reseeding cavity cover, a seed protecting plate II, a main shaft II, an outer clamp II, a rolling bearing II, a bearing end cover III and a bearing end cover IV, the second seat shell is arranged below the seeder, the second main shaft is connected with the centers of the left seed replenishing plate and the right seed replenishing plate through external splines, the left side of the left seed replenishing plate and the right side of the right seed replenishing plate are axially limited by an outer clamp, the left seed replenishing cavity cover is tightly connected with one side of the seat shell, the right seed filling cavity cover is fixedly connected with the other side of the seat shell II, the seed protecting plate II is connected with the inner wall of the seat shell II in a circumferential sliding mode, one end of the main shaft II is rotatably connected with the center of the left seed filling cavity cover through a rolling bearing II, the other end of the main shaft II is rotatably connected with the center of the right seed filling cavity cover through a rolling bearing II, the third bearing end cover is connected with the central end face of the left seed filling cavity cover, and the fourth bearing end cover is connected with the central end face of the right seed filling cavity cover.
The lower end of the seat shell is provided with a first seed storage hopper, one side face of the first seed storage hopper is provided with an optical fiber sensor, and the lower end of the first seed storage hopper is communicated with a first blanking pipe.
Two lower extremes of seat shell are equipped with seed storage hopper two, are equipped with the baffle in the middle of the seed storage hopper two, will store up seed storage hopper two and divide into left cavity and right cavity, be equipped with left rotary cylinder on the outer wall of left cavity, it has left rotation axis to run through in the left cavity, and left rotation axis is rotatory by left rotary cylinder drive, left rotation axis sets firmly left support blank soon, be equipped with right rotary cylinder on the outer wall of right cavity, it has right rotation axis to run through in the right cavity, and right rotation axis is rotatory by right rotary cylinder drive, right rotation axis sets firmly right support blank soon.
Preferably, the center of the seed discharging disc is provided with a first spline hole, an outer spline on the first main shaft is connected with the first spline hole, the edge of the end face of the seed discharging disc presents a plurality of first type holes, the edge of the other end face of the seed discharging disc presents a plurality of first seed outlets, a plurality of first U-shaped bends are uniformly arranged in the seed discharging disc in the circumferential direction, one end of each first U-shaped bend is communicated with the first type hole, and the other end of each first U-shaped bend is communicated with the first seed outlet.
Preferably, the center of the left seed replenishing plate and the center of the right seed replenishing plate are provided with a spline hole II, an external spline on the main shaft II is connected with the spline hole II, the end face edges of the left seed replenishing plate and the right seed replenishing plate are circumferentially and uniformly provided with a plurality of profile holes II, the edge of the other end face of the left seed replenishing plate and the other end face edge of the right seed replenishing plate are circumferentially and uniformly provided with a plurality of seed outlets II, the inner portions of the left seed replenishing plate and the right seed replenishing plate are circumferentially and uniformly provided with a plurality of U-shaped curve channels II, one ends of the U-shaped curve channels are communicated with the profile holes II, and the other ends of the U.
Preferably, one side of the second type hole is provided with a wedge-shaped notch, and after the left seed replenishing disc and the right seed replenishing disc are symmetrically installed, the direction of the wedge-shaped notch on the left seed replenishing disc is opposite to the direction of the wedge-shaped notch on the right seed replenishing disc.
Preferably, the lower end of the left chamber is connected with a left seed replenishing pipe, the lower end of the right chamber is connected with a right seed replenishing pipe, the left seed replenishing pipe is communicated and connected with a first blanking pipe of the left adjacent seed metering device, and the right seed replenishing pipe is communicated and connected with a first blanking pipe of the right adjacent seed metering device.
Preferably, the device further comprises a control system, the control system comprises a single chip microcomputer, a first electromagnetic valve and a second electromagnetic valve, an optical fiber sensor at the lower end of the left seed metering device and an optical fiber sensor at the lower end of the right seed metering device are respectively in signal connection with the input end of the single chip microcomputer, the first electromagnetic valve and the second electromagnetic valve are in signal connection with the output end of the single chip microcomputer, the first electromagnetic valve is connected with the left rotary air cylinder through an air pipe, and the second electromagnetic valve is connected with the right rotary air.
A control system of a corn miss-seeding reseeding device comprises the following specific steps of S1: the optical fiber sensor at the lower end of the seed metering device on the left side and the optical fiber sensor at the lower end of the seed metering device on the right side are started to work;
s10: judging whether seeds fall in the left seed storage hopper I or not, if yes, returning to the step S1, and if not, performing S11;
s11: the first electromagnetic valve is switched to the left position from the middle position and is switched on, and the left rotary air cylinder rotates clockwise to enable the left seed supporting plate to rotate clockwise to be opened, so that the missing seeding and reseeding of the adjacent seed sowing device on the left side are realized;
s12: the first electromagnetic valve is switched from the left position to the right position to be communicated, and the left rotary air cylinder rotates anticlockwise to enable the left seed supporting plate to rotate anticlockwise to be closed so as to prepare for supporting seeds;
s13: the second main shaft rotates anticlockwise, and the left seed replenishing plate replenishes seeds on the left seed supporting plate;
s20: judging whether seeds fall in the right seed storage hopper I or not, if yes, returning to the step S1, and if not, performing S21;
s21: the second electromagnetic valve is switched from the middle position to the right position to be communicated, and the right rotary cylinder rotates anticlockwise to enable the right seed supporting plate to rotate anticlockwise to be opened, so that the missing seeding and reseeding of the adjacent seed sowing devices on the right side are realized;
s22: the electromagnetic valve II is switched from the right position to the left position to be communicated, and the right rotary cylinder rotates clockwise to enable the right seed supporting plate to rotate clockwise to be closed so as to prepare for supporting seeds;
s23: the second main shaft rotates clockwise, and the right seed replenishing plate replenishes seeds on the right seed supporting plate.
The beneficial effect of adopting above technical scheme is:
1. according to the corn miss-seeding reseeding device, the lower end of the seat shell of the seed sowing device is provided with the first seed storage hopper, and one side surface of the first seed storage hopper is provided with the optical fiber sensor, so that the seed falling of the seed sowing device is monitored in real time, and a miss-seeding real-time signal is provided for a single chip microcomputer; the lower end of the seed storage hopper I is communicated with the seed dropping pipe I, so that seeds are guaranteed to accurately fall into a ditch formed by the ditcher, and the seeds are prevented from falling onto the soil at two sides to cause sowing failure.
Two lower extremes of seat shell are equipped with seed storage hopper two, are equipped with the baffle in the middle of the seed storage hopper two, will store up seed storage hopper two and divide into left cavity and right cavity, be equipped with left revolving cylinder on the outer wall of left cavity, run through left rotation axis in the left cavity, and left rotation axis is rotatory by left revolving cylinder drive, left rotation axis sets firmly left seed supporting plate, be equipped with right revolving cylinder on the outer wall of right cavity, it has right rotation axis to run through in the right cavity, and right rotation axis is rotatory by right revolving cylinder drive, right rotation axis sets firmly right seed supporting plate, provides the mechanism support for adopting a reseeding device to reseed two lines of seed metering devices.
One side of the second type hole is provided with a wedge-shaped notch, and after the left seed replenishing disc and the right seed replenishing disc are symmetrically installed, the direction of the wedge-shaped notch on the left seed replenishing disc is opposite to the direction of the wedge-shaped notch on the right seed replenishing disc, so that when the left seed replenishing disc and the right seed replenishing disc rotate anticlockwise, the left seed replenishing disc takes seeds, and the right seed replenishing disc does not take seeds; when the left seed replenishing plate and the right seed replenishing plate rotate clockwise, the left seed replenishing plate does not take seeds, and the right seed replenishing plate takes seeds.
2. The control system of the corn miss-seeding reseeding device comprises a single chip microcomputer, a first electromagnetic valve and a second electromagnetic valve, wherein an optical fiber sensor at the lower end of a left seed sowing device and an optical fiber sensor at the lower end of a right seed sowing device are respectively connected with an input end signal of the single chip microcomputer, the first electromagnetic valve and the second electromagnetic valve are connected with an output end signal of the single chip microcomputer, the first electromagnetic valve is connected with a left rotating air cylinder through an air pipe, and the second electromagnetic valve is connected with a right rotating air cylinder through an air.
Firstly, respectively putting corn seeds into first seed filling cavity covers on two sides and a left seed filling cavity cover and a right seed filling cavity cover in the middle, then enabling seed sowing devices on two sides to work, driving a seed sowing disc to rotate through the matching of a first main shaft and a first spline hole, enabling the seeds in the first seed filling cavity cover to enter a first U-shaped bend through the first section hole on the seed sowing disc, then discharging the seeds from a first seed outlet, enabling the seeds to enter a first seed storage hopper, and enabling the seeds to fall into a sowing ditch formed by a ditcher along a first blanking pipe.
When the seeding devices on the two sides perform seeding operation, the following steps are performed:
s1: the optical fiber sensor at the lower end of the seed metering device on the left side and the optical fiber sensor at the lower end of the seed metering device on the right side are started to work;
s10: judging whether seeds fall in the left seed storage hopper I or not, if yes, returning to the step S1, and if not, performing S11;
s11: the first electromagnetic valve is switched from the middle position to the left position and is switched on, the left rotary cylinder drives the left rotary shaft to rotate clockwise, so that the left seed supporting plate rotates clockwise to be opened, and the missing seeding and reseeding of the adjacent seed sowing device on the left side are realized;
s12: the first electromagnetic valve is switched from the left position to the right position to be connected, the left rotary air cylinder drives the left rotary shaft to rotate anticlockwise, the left seed supporting plate rotates anticlockwise to be closed, and preparation is made for seed supporting;
s13: the second main shaft drives the left seed replenishing plate and the right seed replenishing plate to rotate anticlockwise, and the left seed replenishing plate replenishes seeds on the left seed supporting plate; s20: judging whether seeds fall in the right seed storage hopper I or not, if yes, returning to the step S1, and if not, performing S21;
s21: the second electromagnetic valve is switched from the middle position to the right position to be communicated, and the right rotary cylinder drives the right rotary shaft to rotate anticlockwise, so that the right seed supporting plate rotates anticlockwise to be opened, and the missing seeding and reseeding of the adjacent seed sowing devices on the right side are realized;
s22: the electromagnetic valve II is switched from a right position to a left position and is switched on, the right rotating cylinder drives the right rotating shaft to rotate clockwise, so that the right seed supporting plate rotates clockwise to be closed, and preparation is made for supporting seeds;
s23: the second main shaft drives the left seed replenishing plate and the right seed replenishing plate to rotate clockwise, and the right seed replenishing plate replenishes seeds on the right seed supporting plate.
The invention adopts one reseeding device to reseed two rows of seed metering devices, has simple and compact structure and high reseeding accuracy and real-time performance, can effectively reduce the miss-seeding rate of the corn precision seeding machine, and improves the seeding quality and the production efficiency.
Drawings
FIG. 1 is an assembly drawing of the installation position of the corn miss-seeding reseeding device;
FIG. 2 is a front view of the installation position of the corn miss-seeding reseeding device;
FIG. 3 is an exploded view of the seed meter;
FIG. 4 is an exploded view of a reseeding device;
FIG. 5 is a partial enlarged view of the portion A in FIG. 4;
FIG. 6 is a schematic structural view of the second seed storage hopper;
FIG. 7 is a cross-sectional view of a seed metering disk;
FIG. 8 is a cross-sectional view of the left reseeding disk;
FIG. 9 is a cross-sectional view of the right reseeding disk;
FIG. 10 is a control system hardware connection diagram;
FIG. 11 is a schematic diagram of the control system operating logic;
wherein:
1. a seed sowing device; 2. a seed supplementing device;
10. a first seat shell; 11. a seed discharging tray; 12. a first seed charging chamber cover; 13. protecting a first plate; 14. a first main shaft; 15. an outer card I; 16. a first rolling bearing; 17. a first bearing end cover; 18. a second bearing end cover;
1-1, a spline hole I; 1-2, forming a first hole; 1-3, a first seed outlet; 1-4, a first U-shaped bend;
100. a first seed storage hopper; 101. an optical fiber sensor; 102. a first blanking pipe;
20. a second seat shell; 21. left seed replenishing; 22. right seed replenishing; 23. a left seed charging cavity cover; 24. a right seed charging chamber cover; 25. a second seed protection plate; 26. a second main shaft; 27. a second external card; 28. a second rolling bearing; 29. a third bearing end cover; 29-1 and a bearing end cover IV;
2-1, a spline hole II; 2-2, forming a second hole; 2-3, a second seed outlet; 2-4, a U-shaped bend II; 2-5, wedge-shaped cut;
200. a second seed storage hopper; 201. a partition plate; 201-1, left chamber; 201-2, right chamber; 202. a left rotary cylinder; 203. a left rotating shaft; 204. a left seed supporting plate; 205. a left seed replenishing pipe; 206. a right-handed rotating cylinder; 207. a right rotating shaft; 208. a right seed supporting plate; 209. and (7) a right seed replenishing pipe.
Detailed Description
The following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings for a purpose of helping those skilled in the art to more fully, accurately and deeply understand the concept and technical solution of the present invention and to facilitate its implementation.
As shown in fig. 1 to 11, the invention is a corn miss-seeding reseeding device, which adopts one reseeding device to reseed two rows of seed metering devices, has simple and compact structure and high reseeding accuracy and real-time performance, can effectively reduce the miss-seeding rate of a corn precision seeding machine, and improves the seeding quality and the production efficiency.
Specifically, as shown in fig. 1 to 11, the seed metering device 1 comprises a seed metering device 1, as shown in fig. 1, 2 and 3, the seed metering device 1 comprises a seat shell I10, a seed metering disc 11, a first seed charging cavity cover 12, a seed protecting plate I13, a main shaft I14, an outer clamping I15, a rolling bearing I16, a bearing end cover I17 and a bearing end cover II 18, the seat shell I10 is installed below a seeder, the main shaft I14 is connected with the center of the seed metering disc 11 through an external spline, the seed metering disc 11 is limited by the outer clamping I15 in the axial direction, the first seed charging cavity cover 12 is fixedly connected with one side of the seat shell I10, the seed protecting plate I13 is connected with the inner wall of the seat shell I10 in a circumferential sliding manner, one end of the main shaft I14 is rotatably connected with the center of the first seed charging cavity cover 12 through the rolling bearing I16, the other end of the main shaft I14 is rotatably connected with the center of the shell through the rolling bearing end cover, the second bearing end cover 18 is connected with the central end face of the shell, the second bearing end cover further comprises a seed replenisher 2, and the seed replenisher 2 is directly arranged on the adjacent seed sowing device 1.
As shown in fig. 1, 2 and 4, the reseeding device 2 comprises a second seat shell 20, a left reseeding disc 21, a right reseeding disc 22, a left reseeding cavity cover 23, a right reseeding cavity cover 24, a second seed protecting plate 25, a second main shaft 26, a second outer clamping plate 27, a second rolling bearing 28, a third bearing end cover 29 and a fourth bearing end cover 29-1, wherein the second seat shell 20 is installed below the seeding machine, the second main shaft 26 is connected with the centers of the left reseeding disc 21 and the right reseeding disc 22 through an external spline, the left side of the left reseeding disc 21 and the right side of the right reseeding disc 22 are axially limited by the second outer clamping plate 27, the left reseeding cavity cover 23 is fixedly connected with one side of the second seat shell 20, the right reseeding cavity cover 24 is fixedly connected with the other side of the second seat shell 20, the second seed protecting plate 25 is connected with the inner wall of the second seat shell 20 in a circumferential sliding manner, one end of the second main shaft 26 is rotatably connected with the center of the left reseeding cavity cover 23 through the second rolling bearing 28, and the other end of the, the third bearing end cover 29 is connected with the central end face of the left seed filling cavity cover 23, and the fourth bearing end cover 29-1 is connected with the central end face of the right seed filling cavity cover 24.
As shown in fig. 1, 2 and 3, the lower end of the seat shell I10 is provided with a seed storage hopper I100, the side surface of the seed storage hopper I100 is provided with an optical fiber sensor 101, and the lower end of the seed storage hopper I100 is communicated with a blanking pipe I102.
As shown in fig. 1, 2, 4, 5 and 6, a second seed storage hopper 200 is disposed at the lower end of the second seat shell 20, a partition 201 is disposed in the middle of the second seed storage hopper 200, the second seed storage hopper 200 is divided into a left chamber 201-1 and a right chamber 201-2, a left rotation cylinder 202 is disposed on the outer wall of the left chamber 201-1, a left rotation shaft 203 penetrates through the left chamber 201-1, the left rotation shaft 203 is driven by the left rotation cylinder 202 to rotate, a left seed supporting plate 204 is fastened on the left rotation shaft 203, a right rotation cylinder 206 is disposed on the outer wall of the right chamber 201-2, a right rotation shaft 207 penetrates through the right chamber 201-2, the right rotation shaft 207 is driven by the right rotation cylinder 206 to rotate, and a right seed supporting plate 208 is fastened on the right rotation shaft 207.
As shown in figure 7, a spline hole I1-1 is arranged in the center of the seed discharging disc 11, an external spline on the main shaft I14 is connected with the spline hole I1-1, a plurality of shaped holes I1-2 are uniformly arranged on the edge of the end face of the seed discharging disc 11 in a circumferential manner, a plurality of seed outlets I1-3 are uniformly arranged on the edge of the other end face of the seed discharging disc 11 in a circumferential manner, a plurality of U-shaped bent channels I1-4 are uniformly arranged in the seed discharging disc 11 in a circumferential manner, one end of each U-shaped bent channel I1-4 is communicated with the corresponding shaped hole I1-2, and the other end of each U-shaped bent channel I1-4.
As shown in fig. 8 and 9, the center of the left seed replenishing disc 21 and the right seed replenishing disc 22 is provided with a spline hole two 2-1, an external spline on the main shaft two 26 is connected with the spline hole two 2-1, the edge of the end surface of the left seed replenishing disc 21 and the right seed replenishing disc 22 presents a circumference and is uniformly provided with a plurality of profile holes two 2-2, the edge of the other end surface of the left seed replenishing disc 21 and the right seed replenishing disc 22 presents a circumference and is uniformly provided with a plurality of seed outlets two 2-3, a plurality of U-shaped curve channels two 2-4 are circumferentially and uniformly arranged in the left seed replenishing disc 21 and the right seed replenishing disc 22, one end of each U-shaped curve channel two 2-4 is communicated with the profile hole two 2-2, and the other end is communicated with the seed outlet two 2-3.
As shown in FIG. 4, one side of the second type hole 2-2 is provided with a wedge-shaped notch 2-5, and after the left seed replenishing disc 21 and the right seed replenishing disc 22 are symmetrically installed, the wedge-shaped notch 2-5 on the left seed replenishing disc 21 faces to the opposite direction of the wedge-shaped notch 2-5 on the right seed replenishing disc 22.
As shown in FIG. 2, the lower end of the left chamber 201-1 is connected with a left seed replenishing pipe 205, the lower end of the right chamber 201-2 is connected with a right seed replenishing pipe 209, the left seed replenishing pipe 205 is communicated and connected with the first blanking pipe 102 of the adjacent seed metering device 1 on the left side, and the right seed replenishing pipe 209 is communicated and connected with the first blanking pipe 102 of the adjacent seed metering device 1 on the right side.
As shown in fig. 10 and 11, the intelligent seeding apparatus further comprises a control system, wherein the control system comprises a single chip microcomputer, a first electromagnetic valve and a second electromagnetic valve, the optical fiber sensor 101 at the lower end of the left seeding apparatus 1 and the optical fiber sensor 101 at the lower end of the right seeding apparatus 1 are respectively in signal connection with the input end of the single chip microcomputer, the first electromagnetic valve and the second electromagnetic valve are in signal connection with the output end of the single chip microcomputer, the first electromagnetic valve is connected with the left rotary cylinder 202 through an air pipe, and the second electromagnetic valve is connected with the right rotary.
A control system of a corn miss-seeding reseeding device comprises the following specific steps of S1: the optical fiber sensor 101 at the lower end of the left seed sowing device 1 and the optical fiber sensor 101 at the lower end of the right seed sowing device 1 are started to work;
s10: judging whether seeds fall in the left seed storage hopper 100, if so, returning to the step S1, otherwise, performing S11;
s11: the first electromagnetic valve is switched to the left position from the middle position and is switched on, the left rotary cylinder 202 rotates clockwise, the left seed supporting plate 204 rotates clockwise to be opened, and the missing seeding and reseeding of the adjacent seed sowing device 1 on the left side are realized;
s12: the first electromagnetic valve is switched to be connected from the left position to the right position, the left rotary air cylinder 202 rotates anticlockwise, the left seed supporting plate 204 rotates anticlockwise to be closed, and preparation is made for seed supporting;
s13: the second main shaft 26 rotates anticlockwise, and the left seed replenishing disc 21 replenishes seeds on the left seed supporting plate 204;
s20: judging whether seeds fall in the right seed storage hopper 100, if so, returning to the step S1, otherwise, performing S21;
s21: the second electromagnetic valve is switched from the middle position to the right position to be communicated, and the right rotary cylinder 206 rotates anticlockwise to open the right seed supporting plate 208 in an anticlockwise rotating mode, so that the missing seeding and reseeding of the adjacent seed sowing device 1 on the right side are realized;
s22: the second electromagnetic valve is switched to be switched on from the right position to the left position, and the right rotary air cylinder 206 rotates clockwise to close the right seed supporting plate 208 in a clockwise rotating mode to prepare for seed supporting;
s23: the second main shaft 26 rotates clockwise, and the right reseeding disc 22 reseeds on the right seed supporting plate 208.
The following specific working modes are illustrated by specific examples:
example 1:
according to the corn miss-seeding reseeding device, the lower end of a seat shell I10 of the seeding unit 1 is provided with a seed storage hopper I100, the side surface of the seed storage hopper I100 is provided with an optical fiber sensor 101, so that the seed dropping of the seeding unit 1 is monitored in real time, and a miss-seeding real-time signal is provided for a single chip microcomputer; the lower end of the first seed storage hopper 100 is communicated with a first blanking pipe 102, so that seeds are guaranteed to accurately fall into a ditch formed by the ditcher, and the seeds are prevented from falling onto the soil piled on two sides to cause sowing failure.
The lower end of the seat shell II 20 is provided with a seed storage hopper II 200, a partition plate 201 is arranged in the middle of the seed storage hopper II 200, the seed storage hopper II 200 is divided into a left chamber 201-1 and a right chamber 201-2, a left rotary cylinder 202 is arranged on the outer wall of the left chamber 201-1, a left rotary shaft 203 penetrates through the left chamber 201-1, the left rotary shaft 203 is driven to rotate by the left rotary cylinder 202, a left seed supporting plate 204 is fixedly arranged on the left rotary shaft 203, a right rotary cylinder 206 is arranged on the outer wall of the right chamber 201-2, a right rotary shaft 207 penetrates through the right chamber 201-2, the right rotary shaft 207 is driven to rotate by the right rotary cylinder 206, a right seed supporting plate 208 is fixedly arranged on the right rotary shaft 207, and a mechanism support is provided for performing a reseeding operation on two rows of seed metering devices 1 by adopting one rese.
One side of the second type hole 2-2 is provided with a wedge-shaped notch 2-5, and after the left seed replenishing disc 21 and the right seed replenishing disc 22 are symmetrically installed, the direction of the wedge-shaped notch 2-5 on the left seed replenishing disc 21 is opposite to the direction of the wedge-shaped notch 2-5 on the right seed replenishing disc 22, so that when the left seed replenishing disc 21 and the right seed replenishing disc 22 rotate anticlockwise, the left seed replenishing disc 21 takes seeds, and the right seed replenishing disc 22 does not take seeds; when the left seed replenishing disc 21 and the right seed replenishing disc 22 rotate clockwise, the left seed replenishing disc 21 does not take seeds, and the right seed replenishing disc 22 takes seeds.
Example 2:
this control system of corn miss-seeding reseeding device, control system includes singlechip, solenoid valve one and solenoid valve two, and the fiber sensor 101 of left seed metering ware 1 lower extreme and the fiber sensor 101 of seed metering ware 1 lower extreme on right side respectively with the input signal connection of singlechip, solenoid valve one and solenoid valve two are connected with the output end signal of singlechip, solenoid valve one passes through the trachea with left revolving cylinder 202 and is connected, solenoid valve two passes through the trachea with dextrorotation cylinder 206 and is connected.
Firstly, respectively putting corn seeds into the first seed filling cavity covers 12 at two sides and the left seed filling cavity cover 23 and the right seed filling cavity cover 24 in the middle, then the seed sowing devices 1 at two sides work, the first main shaft 14 drives the seed sowing disc 11 to rotate through the matching of an external spline and a spline hole I1-1, the seeds in the first seed filling cavity cover 12 enter a U-shaped bend I1-4 through a shaped hole I1-2 on the seed sowing disc 11, then are discharged from a seed outlet I1-3, enter a seed storage hopper I100, and fall into a sowing ditch opened by a ditcher along a blanking pipe I102.
When the seeding device 1 on the two sides performs seeding operation, the following steps are performed:
s1: the optical fiber sensor 101 at the lower end of the left seed sowing device 1 and the optical fiber sensor 101 at the lower end of the right seed sowing device 1 are started to work;
s10: judging whether seeds fall in the left seed storage hopper 100, if so, returning to the step S1, otherwise, performing S11;
s11: the first electromagnetic valve is switched from the middle position to the left position and is switched on, the left rotary cylinder 202 drives the left rotary shaft 203 to rotate clockwise, so that the left seed supporting plate 204 rotates clockwise to be opened, and the missing seeding and reseeding of the adjacent seed sowing device 1 on the left side are realized;
s12: the first electromagnetic valve is switched to be connected from the left position to the right position, the left rotating cylinder 202 drives the left rotating shaft 203 to rotate anticlockwise, the left seed supporting plate 204 is closed in an anticlockwise rotating mode, and preparation is made for seed supporting;
s13: the second main shaft 26 drives the left seed replenishing disc 21 and the right seed replenishing disc 22 to rotate anticlockwise, and the left seed replenishing disc 21 replenishes seeds on the left seed supporting plate 204;
s20: judging whether seeds fall in the right seed storage hopper 100, if so, returning to the step S1, otherwise, performing S21;
s21: the second electromagnetic valve is switched from the middle position to the right position to be communicated, the right rotary air cylinder 206 drives the right rotary shaft 207 to rotate anticlockwise, so that the right seed supporting plate 208 rotates anticlockwise to be opened, and the missing seeding and reseeding of the adjacent seed sowing device 1 on the right side are realized;
s22: the second electromagnetic valve is switched from the right position to the left position to be communicated, the right rotary air cylinder 206 drives the right rotary shaft 207 to rotate clockwise, so that the right seed supporting plate 208 rotates clockwise to be closed, and preparation is made for supporting seeds;
s23: the second main shaft 26 drives the left reseeding disc 21 and the right reseeding disc 22 to rotate clockwise, and the right reseeding disc 22 replenishes seeds on the right seed supporting plate 208.
The invention adopts one reseeding device 2 to reseed two rows of seed metering devices 1, has simple and compact structure and high reseeding accuracy and real-time performance, can effectively reduce the miss-seeding rate of the corn precision seeding machine, and improves the seeding quality and the production efficiency.
The present invention has been described in connection with the accompanying drawings, and it is to be understood that the invention is not limited to the specific embodiments described above, but is intended to cover various insubstantial modifications of the invention based on the principles and technical solutions of the invention; the present invention is not limited to the above embodiments, and can be modified in various ways.
Claims (7)
1. A corn miss-seeding reseeding device comprises a seed sowing device (1), wherein the seed sowing device (1) consists of a seat shell I (10), a seed sowing disc (11), a first seed filling cavity cover (12), a seed protecting plate I (13), a main shaft I (14), an outer clamping I (15), a rolling bearing I (16), a bearing end cover I (17) and a bearing end cover II (18), the seat shell I (1) is installed below a seed sowing machine, the main shaft I (14) is connected with the center of the seed sowing disc (11) through an outer spline, the seed sowing disc (11) is limited by the outer clamping I (15) in the axial direction, the first seed filling cavity cover (12) is fixedly connected with one side of the seat shell I (10), the seed protecting plate I (13) is connected with the inner wall of the seat shell I (10) in a circumferential sliding manner, one end of the main shaft I (14) is connected with the center of the first seed filling cavity cover (12) through the rolling bearing I (16), and the other end of the main shaft I (14) is connected with the center of, bearing end cover one (17) and first kind of chamber cover (12) center end face connection that fills, bearing end cover two (18) and casing center end face connection, its characterized in that: the seed supplementing device (2) is also included, and the adjacent seed sowing device (1) is directly provided with the seed supplementing device (2);
the reseeding device (2) comprises a seat shell II (20), a left reseeding disc (21), a right reseeding disc (22), a left reseeding cavity cover (23), a right reseeding cavity cover (24), a seed protecting plate II (25), a main shaft II (26), an outer clamping II (27), a rolling bearing II (28), a bearing end cover III (29) and a bearing end cover IV (29-1), wherein the seat shell II (20) is installed below the seeder, the main shaft II (26) is connected with the centers of the left reseeding disc (21) and the right reseeding disc (22) through an outer spline, the left side of the left reseeding disc (21) and the right side of the right reseeding disc (22) are axially limited by the outer clamping II (27), the left reseeding cavity cover (23) is fixedly connected with one side of the seat shell II (20), the right reseeding cavity cover (24) is fixedly connected with the other side of the seat shell II (20), and the seed protecting plate II (25) is circumferentially and slidably connected with the inner wall of the seat shell II (20), one end of a second main shaft (26) is rotationally connected with the center of the left seed filling cavity cover (23) through a second rolling bearing (28), the other end of the second main shaft (26) is rotationally connected with the center of the right seed filling cavity cover (24) through a second rolling bearing (28), a third bearing end cover (29) is connected with the central end face of the left seed filling cavity cover (23), and a fourth bearing end cover (29-1) is connected with the central end face of the right seed filling cavity cover (24);
a first seed storage hopper (100) is arranged at the lower end of the first seat shell (10), an optical fiber sensor (101) is arranged on the side surface of the first seed storage hopper (100), and a first blanking pipe (102) is communicated with the lower end of the first seed storage hopper (100);
seat shell two (20) lower extreme is equipped with seed storage and fights two (200), is equipped with baffle (201) in the middle of seed storage and fights two (200), divides seed storage and fights two (200) into left cavity (201-1) and right cavity (201-2), be equipped with left rotation cylinder (202) on left side cavity (201-1) outer wall, it has left rotation axis (203) to run through in left cavity (201-1), and left rotation axis (203) is rotatory by left rotation cylinder (202) drive, left side rotation axis (203) are set firmly left and are held in the palm seed board (204), be equipped with right rotation cylinder (206) on right cavity (201-2) outer wall, run through in right cavity (201-2) and have right rotation axis (207), and right rotation axis (207) are rotated by right rotation cylinder (206) drive, right rotation axis (207) are set firmly right and are held in the palm seed board (208).
2. The corn miss-seeding reseeding device according to claim 1, characterized in that: the seed metering dish (11) center is equipped with splined hole one (1-1), and the external splines on main shaft one (14) are connected with splined hole one (1-1), seed metering dish (11) terminal surface edge presents the circumference and evenly is equipped with a plurality of type hole one (1-2), seed metering dish (11) another terminal surface edge presents the circumference and evenly is equipped with a plurality of seed outlet one (1-3), appears in seed metering dish (11) circumference and evenly is equipped with a plurality of U type bend one (1-4), and U type bend one (1-4) one end communicates with each other with type hole one (1-2) and is connected, and the other end communicates with each other with seed outlet one (1-3) and is connected.
3. The corn miss-seeding reseeding device according to claim 1, characterized in that: the center of the left seed replenishing disc (21) and the center of the right seed replenishing disc (22) are provided with a second splined hole (2-1), an external spline on the second main shaft (26) is connected with the second splined hole (2-1), the end faces of the left seed replenishing disc (21) and the right seed replenishing disc (22) are circumferentially and uniformly provided with a plurality of second type holes (2-2), the other end faces of the left seed replenishing disc (21) and the right seed replenishing disc (22) are circumferentially and uniformly provided with a plurality of second seed outlets (2-3), a plurality of second U-shaped curves (2-4) are circumferentially and uniformly arranged in the left seed replenishing disc (21) and the right seed replenishing disc (22), one ends of the second U-shaped curves (2-4) are communicated and connected with the second type holes (2-2), and the other ends of the second U-shaped curves are communicated and connected with the second seed outlets (2.
4. The corn miss-seeding reseeding device according to claim 3, characterized in that: one side of the second type hole (2-2) is provided with a wedge-shaped notch (2-5), and after the left seed replenishing disc (21) and the right seed replenishing disc (22) are symmetrically installed, the direction of the wedge-shaped notch (2-5) on the left seed replenishing disc (21) is opposite to the direction of the wedge-shaped notch (2-5) on the right seed replenishing disc (22).
5. The corn miss-seeding reseeding device according to claim 1, characterized in that: the lower end of the left chamber (201-1) is connected with a left seed replenishing pipe (205), the lower end of the right chamber (201-2) is connected with a right seed replenishing pipe (209), the left seed replenishing pipe (205) is communicated and connected with a first blanking pipe (102) of the adjacent seed metering device (1) on the left side, and the right seed replenishing pipe (209) is communicated and connected with a first blanking pipe (102) of the adjacent seed metering device (1) on the right side.
6. The corn miss-seeding reseeding device according to claim 1, characterized in that: still include control system, control system includes singlechip, solenoid valve one and solenoid valve two, and fiber sensor (101) of left seed metering ware (1) lower extreme and fiber sensor (101) of seed metering ware (1) lower extreme on right side respectively with the input signal connection of singlechip, solenoid valve one and solenoid valve two are connected with the output end signal of singlechip, solenoid valve one passes through the trachea with left revolving cylinder (202) and is connected, solenoid valve two passes through the trachea with right revolving cylinder (206) and is connected.
7. The utility model provides a control system of maize hourglass seeding reseeding device which characterized in that: the specific steps are as follows,
s1: the optical fiber sensor (101) at the lower end of the left seed sowing device (1) and the optical fiber sensor (101) at the lower end of the right seed sowing device (1) are started to work;
s10: judging whether seeds fall in the left seed storage hopper I (100), if so, returning to the step S1, otherwise, performing S11;
s11: the first electromagnetic valve is switched from the middle position to the left position to be communicated, and the left rotary air cylinder (202) rotates clockwise to enable the left seed supporting plate (204) to rotate clockwise to be opened, so that the missing seeding and reseeding of the adjacent seed sowing device (1) on the left side are realized;
s12: the first electromagnetic valve is switched to be connected from the left position to the right position, and the left rotary air cylinder (202) rotates anticlockwise, so that the left seed supporting plate (204) rotates anticlockwise and is closed, and preparation is made for supporting seeds;
s13: the second main shaft (26) rotates anticlockwise, and the left seed replenishing disc (21) replenishes seeds on the left seed supporting plate (204);
s20: judging whether seeds fall in the right seed storage hopper I (100), if so, returning to the step S1, otherwise, performing S21;
s21: the second electromagnetic valve is switched from the middle position to the right position to be communicated, and the right rotary air cylinder (206) rotates anticlockwise, so that the right seed supporting plate (208) rotates anticlockwise to be opened, and the missing seeding and reseeding of the adjacent seed sowing device (1) on the right side are realized;
s22: the second electromagnetic valve is switched from the right position to the left position to be communicated, and the right rotary air cylinder (206) rotates clockwise to enable the right seed supporting plate (208) to rotate clockwise to be closed so as to prepare for supporting seeds;
s23: the second main shaft (26) rotates clockwise, and the right seed replenishing disc (22) replenishes the right seed supporting plate (208).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010330850.3A CN111788908B (en) | 2020-04-24 | 2020-04-24 | Corn miss-seeding reseeding device and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010330850.3A CN111788908B (en) | 2020-04-24 | 2020-04-24 | Corn miss-seeding reseeding device and control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111788908A true CN111788908A (en) | 2020-10-20 |
| CN111788908B CN111788908B (en) | 2022-03-15 |
Family
ID=72806453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010330850.3A Active CN111788908B (en) | 2020-04-24 | 2020-04-24 | Corn miss-seeding reseeding device and control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111788908B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113412704A (en) * | 2021-07-05 | 2021-09-21 | 山东理工大学 | Quick intelligent reseeding device of multiple disks |
| CN114402758A (en) * | 2022-01-10 | 2022-04-29 | 安徽农业大学 | Seed sowing device with cavity light curtain scanning type miss-seeding detection function and miss-seeding detection method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030167986A1 (en) * | 2002-03-05 | 2003-09-11 | Sauder Gregg A. | Seed belt housing with impact absorbing material to reduce seed skip and method for same |
| CN204443039U (en) * | 2015-02-04 | 2015-07-08 | 李亚秋 | A kind of hand-push type contact roller seeder |
| CN106105510A (en) * | 2016-06-22 | 2016-11-16 | 中国农业大学 | A kind of Anti-inclining spoon formula corn precise quatity feed run and seed feeding method thereof |
| EP3437450A1 (en) * | 2017-08-04 | 2019-02-06 | Deere & Company | Seed skip compensation system |
| CN109937652A (en) * | 2019-04-30 | 2019-06-28 | 安徽农业大学 | The optional double side-feeding rice extractive quantity hole sowing seeder unit of one kind amount of broadcasting |
| CN110073774A (en) * | 2019-05-14 | 2019-08-02 | 安徽农业大学 | A kind of spherical shape seed dual-purpose type precise seeder |
| CN210168445U (en) * | 2019-04-08 | 2020-03-24 | 董兆伟 | Rolling type seeder |
-
2020
- 2020-04-24 CN CN202010330850.3A patent/CN111788908B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030167986A1 (en) * | 2002-03-05 | 2003-09-11 | Sauder Gregg A. | Seed belt housing with impact absorbing material to reduce seed skip and method for same |
| CN204443039U (en) * | 2015-02-04 | 2015-07-08 | 李亚秋 | A kind of hand-push type contact roller seeder |
| CN106105510A (en) * | 2016-06-22 | 2016-11-16 | 中国农业大学 | A kind of Anti-inclining spoon formula corn precise quatity feed run and seed feeding method thereof |
| EP3437450A1 (en) * | 2017-08-04 | 2019-02-06 | Deere & Company | Seed skip compensation system |
| CN210168445U (en) * | 2019-04-08 | 2020-03-24 | 董兆伟 | Rolling type seeder |
| CN109937652A (en) * | 2019-04-30 | 2019-06-28 | 安徽农业大学 | The optional double side-feeding rice extractive quantity hole sowing seeder unit of one kind amount of broadcasting |
| CN110073774A (en) * | 2019-05-14 | 2019-08-02 | 安徽农业大学 | A kind of spherical shape seed dual-purpose type precise seeder |
Non-Patent Citations (1)
| Title |
|---|
| 牛康等: "勺链式马铃薯排种器自补种***设计与试验", 《农业机械学报》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113412704A (en) * | 2021-07-05 | 2021-09-21 | 山东理工大学 | Quick intelligent reseeding device of multiple disks |
| CN113412704B (en) * | 2021-07-05 | 2022-05-10 | 山东理工大学 | Quick intelligent reseeding device of many discs |
| CN114402758A (en) * | 2022-01-10 | 2022-04-29 | 安徽农业大学 | Seed sowing device with cavity light curtain scanning type miss-seeding detection function and miss-seeding detection method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111788908B (en) | 2022-03-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111788908B (en) | Corn miss-seeding reseeding device and control method | |
| CN111788909B (en) | Corn miss-seeding reseeding device and control method | |
| CN109937652B (en) | Double-row side-charging type precise hill-drop planter with selectable sowing quantity for rice | |
| CN101438647B (en) | Seeding and fertilizer apparatus of non-ploughing sowing machine | |
| CN111183769B (en) | Zero-speed hole sowing wheel type rice dry direct sowing mechanism | |
| CN110326400A (en) | A kind of corn cave-applied fertilizer no-tillage seeding machine | |
| CN113767734A (en) | Duckbilled seeder | |
| CN207744373U (en) | A kind of small particle precise seeder of aspiration-baler combination | |
| CN210053822U (en) | Double-row side-charging type rice precision hill-drop seed sowing device with selectable sowing quantity | |
| CN108207215A (en) | Effectively gather the farm equipment of seed | |
| CN109275385A (en) | A kind of precise seeding machine of corn | |
| CN216313918U (en) | Duckbilled seeder | |
| CN207766851U (en) | A kind of opposed tilting bucket wheel seeding mechanism of high speed and precision | |
| CN216218703U (en) | Seed taking device for duckbilled seeder | |
| CN206851334U (en) | A kind of rice precise direct-seeding cavitation device | |
| CN211509782U (en) | Zero-speed hole sowing wheel type dry direct sowing mechanism for paddy rice | |
| CN212413785U (en) | Seed metering ware is broadcast to little seed grain seed plot breeding essence | |
| CN108702900B (en) | Rice hill-drop quantitative seed metering composite set | |
| CN209017430U (en) | A kind of precise seeding machine of corn | |
| CN113767736A (en) | Seed taking device for duckbilled seeder | |
| CN207560730U (en) | A kind of multifunction combined feed mechanism for seed | |
| CN208159238U (en) | Effectively gather the farm equipment of seed | |
| CN210157628U (en) | High-filling internal-filling type soybean seed-metering disc | |
| CN221104050U (en) | Double-cavity bucket wheel replaceable peanut precision seed metering device | |
| CN115443776B (en) | Wheat district seeder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |