CN111295995B - Full-automatic wheat seeder is used in wet mashed field based on sensing device - Google Patents
Full-automatic wheat seeder is used in wet mashed field based on sensing device Download PDFInfo
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- CN111295995B CN111295995B CN202010284863.1A CN202010284863A CN111295995B CN 111295995 B CN111295995 B CN 111295995B CN 202010284863 A CN202010284863 A CN 202010284863A CN 111295995 B CN111295995 B CN 111295995B
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Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C7/00—Sowing
- A01C7/06—Seeders combined with fertilising apparatus
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- 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
-
- 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
- A01C7/208—Chassis; Coupling means to a tractor or the like; Lifting means; Side markers
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- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Sowing (AREA)
Abstract
The invention discloses a full-automatic wheat seeder for wet and rotten fields based on a sensing device, which comprises a main body, wherein the main body consists of a single group of seeding mechanisms, the single group of seeding mechanisms are provided with a plurality of groups, the single group of seeding mechanisms are connected through a connecting mechanism, the single group of seeding mechanisms comprise a placing plate, a seed containing barrel, a fertilizer containing barrel, a sensing device, a front supporting leg, a plough head, a lower fertilizer barrel, a fertilizer pipe, a single wheel and a rear supporting leg, the placing plate is provided with the seed containing barrel, the fertilizer containing barrel and the sensing device, the seed containing barrel, the fertilizer containing barrel and the sensing device are arranged in front and at back, the front supporting leg is arranged at the front end of the placing plate, a soil hardness detector is arranged on the sensing device, the soil hardness detector in the sensing device is used for controlling the lifting of electric push rods in the front supporting leg and the rear supporting leg, the heights of the front supporting leg and the rear supporting leg are adjusted according to the hardness degree of soil in the fields, the sowing depth of the sowing machine can be conveniently kept within a reasonable range.
Description
Technical Field
The invention relates to the technical field of wheat seeders, in particular to a full-automatic wheat seeder for wet and rot fields based on a sensing device.
Background
Wheat is a general name of wheat plants, is a monocotyledon, is a gramineous plant widely planted all over the world, has caryopsis as one of staple food of human beings, and can be used for making foods such as bread, steamed bread, biscuits, noodles and the like after being ground into flour; fermenting, and making into beer, alcohol, Chinese liquor (such as vodka), or biomass fuel. Wheat is rich in starch, protein, fat, minerals, calcium, iron, thiamine, riboflavin, nicotinic acid, vitamin A, vitamin C, etc. Wheat is one of the three major grains, is almost all eaten, and only about one sixth of the wheat is used as feed. Along with the mechanized progress, the planting of wheat at present mainly adopts full-automatic wheat seeder to sow, and the wheat seeder is a mechanical equipment of planting the wheat seed in the soil through seeding mechanical system.
Because the soft or hard degree of soil is different in the wet mashed field, in the great place of soil softness, the degree of depth that the wheat seeder sinks is bigger, and the seeding degree of depth that can make the seeding of seed this moment is too big, at the great bottom pole of soil hardness, the problem of the degree of depth undersize of the seeding of seed appears easily, but the degree of depth that the wheat was sowed is adjusted to the soft or hard degree of the unable field soil more of current full-automatic wheat seeder, for this reason, we propose kind based on sensing device's full-automatic wheat seeder for wet mashed field.
Disclosure of Invention
The invention aims to provide a full-automatic wheat seeder for wet and rotten fields based on a sensing device, and the full-automatic wheat seeder is used for solving the problems that in the background technology, due to the fact that the hardness and softness of soil in the wet and rotten fields are different, the sinking depth of the wheat seeder is larger in places with larger soil softness, the seeding depth of seeds is too large due to seeding, the seeding depth of the seeds is too small easily to occur in bottom end rods with larger soil hardness, and the seeding depth of the wheat cannot be adjusted by the aid of the hardness and softness of the soil in the fields of the existing full-automatic wheat seeder.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a wet mashed field is with full-automatic wheat seeder based on sensing device, includes the main part, the main part comprises singly organizing seeding mechanism, singly organize seeding mechanism and set up the multiunit, singly organize and connect through coupling mechanism between the seeding mechanism, coupling mechanism is including grafting inner tube, bolt and grafting outer tube, be equipped with the pinhole in same aperture on grafting inner tube and the grafting outer tube, the grafting inner tube is pegged graft in the grafting outer tube, and fixes through the bolt between grafting inner tube and the grafting outer tube, during the use, inserts the grafting inner tube of adjacent singly organizing the coupling mechanism of seeding mechanism and singly organizes the grafting outer tube of coupling mechanism into adjacent, then utilizes the bolt to fix, also can adjust the length of coincidence between grafting inner tube and the grafting outer tube according to the demand and adjust singly organize the distance between the seeding mechanism, singly organize seeding mechanism and include and place the board, singly organize the seeding mechanism and place the distance between the seeding mechanism, The fertilizer comprises a seed containing barrel, a fertilizer containing barrel, a sensing device, a front supporting leg, a plowshare, a lower fertilizer barrel, a fertilizer pipe, a single-piece wheel and a rear supporting leg, wherein the seed containing barrel, the fertilizer containing barrel and the sensing device are arranged on a placing plate, the seed containing barrel, the fertilizer containing barrel and the sensing device are arranged in front of and behind the seed containing barrel, the front supporting leg is arranged at the front end of the placing plate, the plowshare is arranged at the bottom end of the front supporting leg, the single-piece wheel is arranged on the rear supporting leg, the fertilizer pipe is connected to the rear supporting leg, the bottom end of the fertilizer pipe is connected with the lower fertilizer barrel, the upper end of the fertilizer pipe is connected with a connecting pipe, an electromagnetic valve is arranged on the connecting pipe, the connecting pipe is communicated with the bottom end of the fertilizer containing barrel, the sensing device is used for controlling the heights of the front supporting leg and the rear supporting leg, a soil hardness detector is arranged in the sensing device and is connected with the soil hardness detector, the soil hardness detector is arranged at the bottom end of the rear supporting leg, and detecting the hardness of the soil by using the soil hardness detection head.
Preferably, preceding landing leg includes No. two electric push rods, preceding telescopic link and preceding outer tube, No. two electric push rods are connected to the top of preceding telescopic link, No. two electric push rod's base installation is in outer tube cavity bottom in the front, No. two electric push rods and preceding telescopic link cup joint in the outer tube in the front, and during the use, No. two electric push rods drive preceding telescopic link and reciprocate in the outer tube in the front to leg risees or shortens before.
Preferably, the back landing leg includes back telescopic link, back outer tube and electric push rod No. one, an electric push rod is connected on the top of back telescopic link, the base mounting of an electric push rod is in back outer tube cavity bottom, an electric push rod and back telescopic link cup joint in the back outer tube, and during the use, an electric push rod drives the back telescopic link and reciprocates in the back outer tube to the landing leg risees or shortens after.
Preferably, the sensing device is electrically connected with the power switches of the first electric push rod and the second electric push rod, and the first electric push rod and the second electric push rod are controlled by the sensing device.
Preferably, the bottom end of the seed containing barrel is connected with a discharging pipe, the tail end of the discharging pipe is connected with a discharging head, and the discharging pipe is fixed on the front supporting leg and is convenient for sowing seeds through the discharging pipe.
Preferably, a cover body is installed at the top end of the seed containing barrel, a switch is arranged on the inner wall of the cover body, a drag hook is installed at a touch end of the switch, a spring is connected onto the drag hook, the tail end of the spring is connected onto an attached plate, the attached plate is arranged on the upper surface of seeds in the seed containing barrel, the drag hook is also arranged on the attached plate, the tail end of the spring is connected onto the drag hook, a top column is arranged on the upper surface of the attached plate under the switch, the touch end of the switch can be pressed after the top column rises, the switch controls the on-off of an electromagnetic valve, when the attached plate moves downwards to the bottom end of the seed containing barrel, the spring connected with the switch on the attached plate is pulled to the maximum state, so that the switch is pulled, the electromagnetic valve on a connecting pipe is connected with the switch, the electromagnetic valve is closed, fertilization is stopped, and fertilization can be avoided when no seeds exist, the switch can be pressed to the fore-set for solenoid valve opens, continues to fertilize.
Preferably, a connecting frame is arranged on a group of single-group sowing mechanisms in the main body, and the tail end of the connecting frame is arranged at the front end of the placing plate, so that the connecting frame can be conveniently connected with a tractor.
The invention provides a full-automatic wheat seeder for wet and rotten fields based on a sensing device, which has the following beneficial effects:
(1) according to the invention, the sensing device is arranged in the single-group sowing mechanism, the soil hardness detector is arranged on the sensing device, the front supporting leg and the rear supporting leg of the single-group sowing mechanism adopt a structure mode that the outer sleeve is sleeved with the telescopic rod, and the lifting of the electric push rod in the front supporting leg and the rear supporting leg is controlled by the soil hardness detector in the sensing device, so that the heights of the front supporting leg and the rear supporting leg are adjusted according to the hardness degree of soil in a field, the sowing depth of the sowing machine is conveniently kept in a reasonable range, and the sprouting rate is conveniently ensured in the later period.
(2) According to the invention, the main body of the seeder is composed of a plurality of groups of single-group seeding mechanisms, and the single-group seeding mechanisms are connected by the connecting mechanism, so that the number of the single-group seeding mechanisms can be adjusted according to requirements during use, and the distance between the adjacent single-group seeding mechanisms can be adjusted according to requirements due to the mode that the connecting mechanism adopts the mode that the inserting inner pipe is inserted into the inserting outer pipe.
(3) According to the invention, the cover body is arranged at the top end of the seed containing barrel, the switch on the inner wall of the cover body is connected with the auxiliary plate through the spring, when no seed exists in the seed containing barrel, the switch can be pulled by the force of the auxiliary plate pulling the spring, so that the on-off of the electromagnetic valve is controlled, the situation that no fertilizer is applied when no seed exists can be ensured, when the seed containing barrel is filled with seeds, the auxiliary plate moves up to a proper position, the top column can press the switch, so that the electromagnetic valve is opened, and the fertilizer can be continuously applied.
Drawings
FIG. 1 is a top view of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is a schematic structural view of a single-unit sowing mechanism of the present invention;
FIG. 4 is a schematic view of the internal structure of the single-unit sowing mechanism of the present invention;
fig. 5 is a schematic structural diagram of the connecting mechanism of the present invention.
In the figure: 1. a single set of sowing mechanisms; 2. a connecting mechanism; 3. placing the plate; 4. a connecting frame; 5. a seed holding barrel; 6. a fertilizer containing barrel; 7. a sensing device; 8. a front leg; 9. a plowshare; 10. a discharging pipe; 11. blanking head; 12. a fertilizer cylinder is arranged; 13. a fertilizer tube; 14. a soil hardness detection head; 15. a single-piece wheel; 16. a rear leg; 17. a connecting pipe; 18. a rear telescopic rod; 19. a rear outer sleeve; 20. a pin hole; 21. a first electric push rod; 22. an electromagnetic valve; 23. a cover body; 24. a switch; 25. a spring; 26. attaching a plate; 27. a second electric push rod; 28. a front telescoping rod; 29. a front outer sleeve; 30. inserting an inner pipe; 31. a bolt; 32. inserting an outer pipe; 33. a top pillar; 34. and (4) pulling a hook.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
As shown in fig. 1 to 5, the present invention provides a technical solution: a full-automatic wheat seeder for wet and rotten fields based on a sensing device comprises a main body, wherein the main body is composed of a single group of seeding mechanisms 1, the single group of seeding mechanisms 1 are provided with a plurality of groups, the single group of seeding mechanisms 1 are connected through a connecting mechanism 2, the single group of seeding mechanisms 1 comprises a placing plate 3, a seed containing barrel 5, a fertilizer containing barrel 6, a sensing device 7, a front supporting leg 8, a plowshare 9, a lower fertilizer barrel 12, a fertilizer pipe 13, a single-piece wheel 15 and a rear supporting leg 16, the placing plate 3 is provided with the seed containing barrel 5, the fertilizer containing barrel 6 and the sensing device 7 which are arranged in front and back, the front supporting leg 8 is arranged at the front end of the placing plate 3, the plowshare 9 is arranged at the bottom end of the front supporting leg 8, the rear supporting leg 16 is provided with the single-piece wheel 15, the rear supporting leg 16 is connected with the fertilizer pipe 13, the bottom end of the fertilizer pipe 13 is connected with the lower fertilizer cylinder 12, the upper end of the fertilizer pipe 13 is connected with the connecting pipe 17, the electromagnetic valve 22 is installed on the connecting pipe 17, the connecting pipe 17 is communicated with the bottom end of the fertilizer containing barrel 6, and the sensing device 7 is used for controlling the heights of the front supporting leg 8 and the rear supporting leg 16.
The soil hardness detector is arranged in the sensing device 7 and is connected with the soil hardness detection head 14, the soil hardness detection head 14 is installed at the bottom end of the rear supporting leg 16, and soil hardness detection is carried out by the soil hardness detection head 14.
Preceding landing leg 8 includes No. two electric push rods 27, preceding telescopic link 28 and preceding outer tube 29, No. two electric push rods 27 are connected to the top of preceding telescopic link 28, No. two electric push rods 27's pedestal mounting is in the front outer tube 29 inner chamber bottom, No. two electric push rods 27 and preceding telescopic link 28 cup joint in preceding outer tube 29, and during the use, No. two electric push rods 27 drive preceding telescopic link 28 and reciprocate in preceding outer tube 29 to landing leg 8 risees or shortens before.
The rear landing leg 16 comprises a rear telescopic rod 18, a rear outer sleeve 19 and an electric push rod 21, the top end of the rear telescopic rod 18 is connected with the electric push rod 21, the base of the electric push rod 21 is installed at the bottom of the inner cavity of the rear outer sleeve 19, the electric push rod 21 and the rear telescopic rod 18 are sleeved in the rear outer sleeve 19, and during use, the electric push rod 21 drives the rear telescopic rod 18 to move up and down in the rear outer sleeve 19, so that the rear landing leg 16 is lifted or shortened.
The sensing device 7 is electrically connected with the power switches of the first electric push rod 21 and the second electric push rod 27, and the first electric push rod 21 and the second electric push rod 27 are controlled by the sensing device 7.
The bottom end of the seed containing barrel 5 is connected with a discharging pipe 10, the tail end of the discharging pipe 10 is connected with a discharging head 11, and the discharging pipe 10 is fixed on the front supporting leg 8, so that seeds can be conveniently sown through the discharging pipe 10.
The top end of the seed containing barrel 5 is provided with a cover body 23, the inner wall of the cover body 23 is provided with a switch 24, the touch end of the switch 24 is provided with a draw hook 34, the draw hook 34 is connected with a spring 25, the tail end of the spring 25 is connected with an accessory plate 26, the accessory plate 26 is arranged on the upper surface of the seeds in the seed containing barrel 5, the accessory plate 26 is also provided with the draw hook 34, the tail end of the spring 25 is connected with the draw hook 34, the upper surface of the accessory plate 26 is provided with a top column 33 under the switch 24, the touch end of the switch 24 can be pressed after the top column 33 is lifted, the switch 24 controls the on-off of the electromagnetic valve 22, when the accessory plate 26 is moved down to the bottom end of the seed containing barrel 5, the spring 25 connected with the switch 24 on the accessory plate 26 is pulled to the maximum state, so as to pull the switch 24, and as the switch 24 is connected with the electromagnetic valve 22 on the connecting pipe 17, the electromagnetic valve 22 is closed, stop the fertilization to when guaranteeing no seed, can avoid the fertilization, when the seed holds in bucket 5 the seed and fills up, can drive and attach board 26 and move up, when attaching board 26 and move up to suitable position after, switch 24 can be pressed to fore-set 33, makes solenoid valve 22 open, continues to fertilize.
The connecting mechanism 2 comprises an inserting inner pipe 30, a plug pin 31 and an inserting outer pipe 32, pin holes 20 with the same aperture are formed in the inserting inner pipe 30 and the inserting outer pipe 32, the inserting inner pipe 30 is inserted into the inserting outer pipe 32, and the inserting inner pipe 30 and the inserting outer pipe 32 are fixed through the plug pin 31, so that when the connecting mechanism is used, the inserting inner pipe 30 of the connecting mechanism 2 of the adjacent single-group sowing mechanism 1 is inserted into the inserting outer pipe 32 of the connecting mechanism 2 of the adjacent single-group sowing mechanism 1, then the plug pin 31 is used for fixing, and the distance between the single-group sowing mechanisms 1 can be adjusted by adjusting the length of the superposition between the inserting inner pipe 30 and the inserting outer pipe 32 according to requirements.
A connecting frame 4 is installed on a group of single-group sowing mechanisms 1 in the main body, and the tail end of the connecting frame 4 is installed at the front end of the placing plate 3, so that the connecting frame 4 can be conveniently connected with a tractor.
The full-automatic wheat seeder for wet and rot fields based on the sensing device comprises a main body of the seeder, a connecting frame 4 is used for mounting the seeder on a tractor, a single-group seeding mechanism 1 is assembled according to the actual field size, an inserting inner pipe 30 of a connecting mechanism 2 of an adjacent single-group seeding mechanism 1 is inserted into an inserting outer pipe 32 of the connecting mechanism 2 of the adjacent single-group seeding mechanism 1 during assembly, then a bolt 31 is used for fixing, the overlapping length between the inserting inner pipe 30 and the inserting outer pipe 32 can be adjusted according to requirements to adjust the distance between the single-group seeding mechanisms 1, when the full-automatic wheat seeder is used, a soil hardness detector on the sensing device 7 in the single-group seeding mechanism 1 detects the hardness degree of soil by using a soil hardness detecting head 14, a second electric push rod 27 in a front supporting leg 8 and a first electric push rod 21 in a rear supporting leg 16 are adjusted according to the detected data, the first electric push rod 21 and the second electric push rod 27 are raised or shortened according to the data of the sensing device 7, so as to adjust the heights of the front support leg 8 and the rear support leg 16, so as to control the height of the material head 11 at one side of the front support leg 8 and the height of the fertilizer barrel 12 at one side of the rear support leg 16, so that the sowing depth of the sowing machine is kept in a reasonable range, so as to ensure the germination rate at the later stage, wherein the auxiliary plate 26 in the seed containing barrel 5 can continuously move downwards along with the continuous reduction of the seeds in the seed containing barrel 5, when the auxiliary plate 26 moves downwards to the bottom end of the seed containing barrel 5, the spring 25 of the connecting switch 24 on the auxiliary plate 26 can be pulled to the maximum state, so as to pull the switch 24, because the switch 24 is connected with the electromagnetic valve 22 on the connecting pipe 17, the electromagnetic valve 22 is closed, the fertilization is stopped, so as to ensure that the fertilization can be avoided, when the seeds in the seed containing barrel 5 are filled up, will drive the accessory plate 26 to move up, when the accessory plate 26 moves up to a proper position, the top pillar 33 will press the switch 24, so that the electromagnetic valve 22 is opened to continue fertilizing.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a wet mashed field is with full-automatic wheat seeder based on sensing device, includes the main part, its characterized in that, the main part comprises singly organizing seeding mechanism (1), singly organize seeding mechanism (1) and set up the multiunit, singly organize and connect through coupling mechanism (2) between seeding mechanism (1), coupling mechanism (2) are including grafting inner tube (30), bolt (31) and grafting outer tube (32), be equipped with pinhole (20) in the same aperture on grafting inner tube (30) and grafting outer tube (32), grafting inner tube (30) are pegged graft in grafting outer tube (32), and are fixed through bolt (31) between grafting inner tube (30) and grafting outer tube (32), singly organize seeding mechanism (1) including placing board (3), seed hold bucket (5), fertilizer hold bucket (6), sensing device (7), preceding landing leg (8), The fertilizer applying device comprises a plowshare (9), a fertilizer discharging barrel (12), a fertilizer tube (13), a single-piece wheel (15) and rear support legs (16), wherein a seed containing barrel (5), a fertilizer containing barrel (6) and a sensing device (7) are arranged on a placing plate (3), the seed containing barrel (5), the fertilizer containing barrel (6) and the sensing device (7) are arranged in front of and behind the placing plate, a front support leg (8) is arranged at the front end of the placing plate (3), the plowshare (9) is arranged at the bottom end of the front support leg (8), the single-piece wheel (15) is arranged on the rear support leg (16), the fertilizer tube (13) is connected onto the rear support leg (16), the bottom end of the fertilizer tube (13) is connected with the fertilizer discharging barrel (12), the upper end of the fertilizer tube (13) is connected with a connecting tube (17), an electromagnetic valve (22) is arranged on the connecting tube (17), and the connecting tube (17) is communicated with the bottom end of the fertilizer containing barrel (6), the soil hardness detection device is characterized in that the sensing device (7) is used for controlling the height of a front supporting leg (8) and a rear supporting leg (16), a soil hardness detector is arranged in the sensing device (7), the soil hardness detector is connected with a soil hardness detection head (14), the soil hardness detection head (14) is installed at the bottom end of the rear supporting leg (16), the front supporting leg (8) comprises a second electric push rod (27), a front telescopic rod (28) and a front outer sleeve (29), the top end of the front telescopic rod (28) is connected with the second electric push rod (27), the base of the second electric push rod (27) is installed at the bottom of the inner cavity of the front outer sleeve (29), the second electric push rod (27) and the front telescopic rod (28) are sleeved in the front outer sleeve (29), the rear supporting leg (16) comprises a rear telescopic rod (18), a rear outer sleeve (19) and a first electric push rod (21), the top end of the rear telescopic rod (18) is connected with the first electric push rod (21), the base of the first electric push rod (21) is arranged at the bottom of the inner cavity of the rear outer sleeve (19), and the first electric push rod (21) and the rear telescopic rod (18) are sleeved in the rear outer sleeve (19).
2. The full-automatic wheat seeder for wet and rot fields based on the sensing device of claim 1, characterized in that: the sensing device (7) is electrically connected with the power switches of the first electric push rod (21) and the second electric push rod (27).
3. The full-automatic wheat seeder for wet and rot fields based on the sensing device of claim 1, characterized in that: the bottom end of the seed containing barrel (5) is connected with a discharging pipe (10), the tail end of the discharging pipe (10) is connected with a discharging head (11), and the discharging pipe (10) is fixed on the front supporting leg (8).
4. The full-automatic wheat seeder for wet and rot fields based on the sensing device of claim 1, characterized in that: the seed holds the top of bucket (5) and installs lid (23), lid (23) inner wall is equipped with switch (24), drag hook (34) are installed to the end of touching of switch (24), coupling spring (25) are gone up in drag hook (34), the trailing end connection of spring (25) is on attaching board (26), attach board (26) and arrange the upper surface that the seed held the seed in bucket (5) in, also be equipped with drag hook (34) on attaching board (26), the trailing end connection of spring (25) is on drag hook (34), the upper surface of attaching board (26) is located under switch (24) position and is provided with fore-set (33), the end of touching of switch (24) can be pressed after fore-set (33) rise, the break-make of switch (24) control solenoid valve (22).
5. The full-automatic wheat seeder for wet and rot fields based on the sensing device of claim 1, characterized in that: a connecting frame (4) is arranged on a group of single-group sowing mechanisms (1) in the main body, and the tail end of the connecting frame (4) is arranged at the front end of the placing plate (3).
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| CN111727700A (en) * | 2020-07-02 | 2020-10-02 | 内蒙古自治区农牧业科学院 | No-tillage reseeding machine for grassland dry land |
| CN113099788A (en) * | 2021-04-02 | 2021-07-13 | 武威职业学院 | Automatic drilling seeder is planted to astragalus |
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