CN106900218B - High-speed hill-drop tray with stirring wheel seed metering mechanism - Google Patents
High-speed hill-drop tray with stirring wheel seed metering mechanism Download PDFInfo
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- CN106900218B CN106900218B CN201710267577.2A CN201710267577A CN106900218B CN 106900218 B CN106900218 B CN 106900218B CN 201710267577 A CN201710267577 A CN 201710267577A CN 106900218 B CN106900218 B CN 106900218B
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- plate
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- seed
- seed metering
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C7/00—Sowing
- A01C7/002—Dibble seeders
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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
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Abstract
A high-speed hole sowing disk with a stirring wheel seed sowing mechanism mainly comprises a movable disk, a fixed disk cover, a swinging disk, a scraping plate, a long partition plate, a short partition plate, a cavitation device group, a seed sowing mechanism, a stirring wheel mechanism and the like, wherein the cavitation device group is uniformly distributed on the circumference of the movable disk, the fixed disk and the movable disk are coaxially arranged, the stirring wheel mechanism and the seed sowing mechanism are arranged at the right lower part of a cavity of the fixed disk, the swinging disk is arranged at the rear lower part of the fixed disk, and the scraping plate and the long partition plate are arranged in the fixed disk group and are tangential with the seed sowing wheel. The invention ensures that seeds smoothly enter the seed metering mechanism through the matching of the cavitation device group and the seed metering mechanism and the matching of the stirring wheel mechanism and the seed metering mechanism so as to ensure precise seeding and reduce the cavity rate; the seeding mechanism, the scraping plate, the long partition plate, the short partition plate and the strong seeding device ensure the seeding precision; the floating design of the guard plate plays a role in protecting the seed sowing wheel and seeds.
Description
Technical Field
The invention relates to the technical field of agricultural mechanical seeders, in particular to a high-speed hole sowing plate with a stirring wheel seed sowing mechanism.
Background
Agricultural machinery develops for many years in the sowing link to form various precise hill-drop planter with different structures, but the defects of replay, miss-seeding and the like on sowing quality exist more or less in the practical application process, so that the problem of higher hole rate is caused. Meanwhile, as the seed metering mechanism of the hill planter is not provided with reliable protection measures, the problem that seeds or impurities damage the seed metering mechanism or the damage rate of seeds discharged by the seed metering mechanism is high frequently occurs in the operation process. The air suction type and air blowing type precision hill planter has less damage to seeds, but has lower sowing efficiency.
Disclosure of Invention
The invention aims to solve the technical problem of providing the high-speed hole sowing disk with the stirring wheel seed sowing mechanism, which can effectively protect seeds and seed sowing components and can ensure the sowing precision and quality.
The technical scheme adopted for solving the technical problems of the invention is as follows:
the high-speed hole sowing plate with the stirring wheel type seed sowing mechanism comprises a movable plate and a fixed plate, wherein the fixed plate is provided with a fixed plate cover, the fixed plate cover is fixedly connected with the fixed plate, a cavity for accommodating seeds is formed between the fixed plate and the fixed plate cover, hole forming device groups are uniformly distributed on the circumference of the movable plate, a swinging plate mechanism is arranged at the rear lower part of the fixed plate, the swinging plate mechanism is positioned between the movable plate and the fixed plate, the swinging plate mechanism is matched with the hole forming device groups, a short partition plate and a long partition plate are arranged in the cavity formed between the fixed plate and the fixed plate cover, the scraping plate is fixedly pressed on the right part in the fixed plate through a direct pressing plate, the long partition plate is arranged on the left part in the fixed plate, a stirring wheel type seed sowing mechanism is arranged between the scraping plate and the long partition plate, the stirring wheel mechanism comprises a stirring wheel mechanism and a seed sowing mechanism, the stirring wheel mechanism is positioned at the upper part between the scraping plate and the long partition plate, a mechanism is arranged below the stirring wheel mechanism, the stirring wheel mechanism is positioned between the stirring wheel mechanism and the front end of the scraping plate and the long partition plate, the stirring wheel mechanism and the front end of the stirring wheel mechanism is matched with the long partition plate, the stirring wheel mechanism and the stirring wheel mechanism is formed between the stirring wheel mechanism and the fixed plate and the seed sowing mechanism; the seed metering mechanism is positioned at the lower part of a cavity formed between the fixed disc and the fixed disc cover and is matched with the cavitation device group.
The stirring mechanism comprises a stirring wheel driving plate, a stirring wheel shaft, an upper bearing and a lower bearing, a plurality of teeth are arranged in the circumferential direction of the stirring wheel, the stirring wheel and the stirring wheel driving plate are arranged on the stirring wheel shaft, the stirring wheel driving plate is arranged at the upper end of the stirring wheel shaft, the upper part of the stirring wheel shaft is arranged on a fixed disc cover through the upper bearing, the lower end of the stirring wheel shaft is arranged on the fixed disc through the lower bearing, the stirring wheel driving plate is positioned on the outer side of the fixed disc cover, the stirring wheel is positioned in a cavity formed by the fixed disc and the fixed disc cover, and the stirring wheel driving plate is linked with the seed sowing mechanism.
The seed metering mechanism comprises a seed metering wheel driving plate, a guard plate device, a seed metering wheel, a strong seed metering device, a seed metering wheel shaft and a strong seed metering device shaft, wherein the seed metering wheel shaft and the strong seed metering device shaft are arranged between a fixed disc and a fixed disc cover, the seed metering wheel driving plate and the seed metering wheel are arranged on the seed metering wheel shaft, dustpan-shaped holes are uniformly distributed on the outer circle of the seed metering wheel, the seed metering wheel driving plate is positioned on the outer side of the fixed disc cover, the seed metering wheel driving plate is in linkage with the stirring wheel driving plate, the seed metering wheel is positioned in a cavity formed by the fixed disc and the fixed disc cover, the strong seed metering device is arranged on the strong seed metering device shaft, the strong seed metering device is matched with the seed metering wheel, the guard plate device is tangent with the seed metering wheel, the strong seed metering device and the guard plate device are positioned below a scraping plate and a long partition plate, and the strong seed metering device are respectively positioned on two sides of the seed metering wheel.
The guard board device comprises a pressure spring shaft, a guard board pressure spring and a guard board, wherein one end of the guard board pressure spring is connected with the pressure spring shaft in a hanging mode, the other end of the guard board pressure spring is connected with the guard board, the guard board is tangent to the seed sowing wheel under the action of the guard board pressure spring, and the pressure spring shaft is arranged between the fixed disc and the fixed disc cover. .
The scraping plate and the long partition plate are made of materials with good toughness, and the front end of the scraping plate is in a split sheet shape and is tangent with the seed sowing wheel.
The strong seeding device is in a half crescent shape and can be embedded into a gap of the seeding wheel.
According to the invention, the cavitation device group is matched with the stirring wheel seed metering mechanism and the stirring wheel mechanism is matched with the seed metering mechanism, the stirring wheel mechanism continuously stirs seeds around the seed metering wheel to ensure that the seeds are not coagulated in the cavity, and the seeds can smoothly enter the seed metering wheel of the seed metering mechanism, so that one or two seeds can be ensured for each seed metering, thereby ensuring precise seeding and reducing the cavity rate; the design of the seed metering mechanism, the scraping plate and the long and short partition plates can scrape the seeds which are scooped up by more in the nest hole of the seed metering device from the nest hole, and meanwhile, the forced seed metering device can forcedly eject the seeds which do not automatically drop in the nest hole, so that the sowing precision is jointly ensured; the floating design of the guard plate device can jack up the guard plate by impurities when non-seed impurities such as small stones are taken in the holes of the seed taking device, the seed sowing wheel is not damaged due to forced passing, and meanwhile, if excessive seeds are taken in the holes and excessive seeds are not hung off by the scraping plate, the guard plate can be jacked up by the seeds, so that the seed sowing wheel and the seeds are not damaged, and a protection effect is achieved.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a partial schematic view of a seed metering mechanism of the present invention;
FIG. 3 is a schematic view of the structure of the stirring mechanism of the present invention;
FIG. 4 is a schematic view of the structure installation of the forced-induction device of the present invention;
FIG. 5 is a schematic view of the installation of the scraper, long spacer and short spacer of the present invention.
In the figure: 1-a fixed disc cover 2-a movable disc 3-a deflector rod 4-a swinging disc 5-a cavitation device 6-a seed sowing wheel driving plate 7-a rotating sleeve 8-a stirring wheel driving plate 9-a strong sowing device 10-a seed sowing wheel 11-a protection plate 12-a protection plate pressure spring 13-a short partition plate 14-a fixed disc 15-a stirring disc 16-a stirring wheel shaft 17-a long partition plate 18-an upper bearing 19-a lower bearing 20-a strong sowing device shaft 21-a seed sowing wheel shaft 22-a pressure spring shaft 23-a straight pressure plate 24-a scraping plate.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in the figure, the high-speed hole sowing disk with the stirring wheel seed sowing mechanism comprises a movable disk 2 and a fixed disk 14, wherein a fixed disk cover 1 is arranged on the fixed disk 14, the fixed disk cover 1 is fixedly connected with the fixed disk 14, the fixed disk 14 and the movable disk 2 are coaxially arranged, and a cavity for accommodating seeds is formed between the fixed disk 14 and the fixed disk cover 1. The driving lever 3 is arranged in the hole forming device 5, the rotating sleeve 7 is hinged on the inner side of the hole forming device 5, a plurality of hole forming devices 5 are uniformly arranged on the circumference of the movable disc 2, the swinging disc 4 is arranged at the rear lower part of the fixed disc 14 and is positioned between the fixed disc 14 and the movable disc 2, the lower part of the swinging disc 4 is contacted with the driving lever 3, the seed metering mechanism and the stirring mechanism are arranged in a cavity formed between the fixed disc 14 and the fixed disc cover 1, the seed metering mechanism is linked with the stirring wheel driving plate 8 of the stirring mechanism through the seed metering wheel driving plate 6, a scraping plate 24, a short partition plate 13 and a long partition plate 17 are arranged in the cavity formed between the fixed disc 14 and the fixed disc cover 1, the scraping plate 24 is fixedly pressed on the right part in the fixed disc 14 through a straight pressing plate 23, the long partition plate 17 is fixedly arranged on the left part in the fixed disc 14, the stirring wheel mechanism is arranged above the space between the scraping plate 24 and the long partition plate 17, the seed metering mechanism is arranged below the stirring wheel mechanism, the seed metering mechanism is positioned at the cavity lower part formed between the fixed disc 14 and the fixed disc cover 1, the seed metering mechanism is positioned at the front end of the seed metering wheel 10 and the front end of the scraping plate 24 and the long partition plate 17.
As shown in the figure, the stirring wheel mechanism comprises a stirring wheel driving plate 8, a stirring wheel 15, a stirring wheel shaft 16, an upper bearing 18 and a lower bearing 19, a plurality of teeth are uniformly welded on the circumference of the stirring wheel 15, the stirring wheel driving plate 8 is arranged on the stirring wheel shaft 16, the stirring wheel shaft 16 of the stirring wheel mechanism is arranged on a fixed disc cover 1 through the upper bearing 18, the stirring wheel mechanism is arranged on the fixed disc 14 through the lower bearing 19, the stirring wheel 15 is positioned in a cavity formed by the fixed disc 14 and the fixed disc cover 1, and the stirring wheel driving plate 8 is positioned outside the fixed disc cover 1.
As shown in the figure, the seed metering mechanism comprises a seed metering wheel driving plate 6, a guard plate device, a seed metering wheel 10, a strong seed metering device 9, a seed metering wheel shaft 21 and a strong seed metering device shaft 20, wherein the guard plate device comprises a guard plate 11, a guard plate pressure spring 12 and a pressure spring shaft 22, the seed metering wheel 10 and the seed metering wheel driving plate 6 are arranged on the seed metering wheel shaft 21, the semi-crescent strong seed metering device 9 is embedded in a gap of the seed metering wheel 10 through the strong seed metering device shaft 20, the arc edge of the guard plate 11 is tangential to the seed metering wheel 10, one end of the guard plate pressure spring 12 is sleeved on the pressure spring shaft 22, one end of the guard plate pressure spring is propped against the guard plate 11, the strong seed metering device shaft 20 and the pressure spring shaft 22 are arranged on a fixed disc 14, the seed metering mechanism is arranged on the fixed disc 14 through the seed metering wheel shaft 21, the seed metering wheel driving plate 6 is positioned on the outer side of the fixed disc cover 1, and the rest is positioned in a cavity formed by the fixed disc 14 and the fixed disc cover 1.
During operation, seeds are added into the cavity formed by the fixed disc 14 and the fixed disc cover 1, the movable disc 2 of the hole sowing disc rolls clockwise to advance, the hole forming device 5 and the deflector rod 3 and the rotating sleeve 7 of the hole forming device 5 rotate along with the rotation, the rotating sleeve 7 pushes the seed metering wheel driving plate 6 to rotate when rotating to the position of the seed metering wheel driving plate 6, the seed metering wheel driving plate 6 drives the seed metering wheel 10 to rotate through the seed metering wheel shaft 21, meanwhile, the seed metering wheel driving plate 6 drives the stirring wheel driving plate 8 to rotate by a certain angle, and the stirring wheel 15 arranged on the stirring wheel shaft 16 synchronously rotates along with the rotation of the stirring wheel driving plate 8, so that the disturbance of surrounding seeds above the seed metering wheel 10 in the cavity is completed, and the long-time accumulation of the seeds is prevented. Along with the rotation of the seed metering wheel driving plate 6, the seed metering wheel 10 arranged on the seed metering wheel shaft 21 also synchronously rotates, the seeds in the cavity flow into dustpan-shaped holes uniformly distributed on the outer circle of the seed metering wheel 10, under the blocking of the scraping plate 24 on the seeds, the seeds entering the seed metering wheel 10 each time can only meet the hole requirements of the seed metering wheel 10, under the continuous stirring of the seed metering wheel driving plate 6 by the driving rod 3, the seeds in the holes of the seed metering wheel 10 rotate along with the seed metering wheel 10, under the action of the guard plate 11, the seeds cannot fall after rotating the scraping plate 24, and after the holes where the seeds are pass through the covering range of the guard plate 11, the seeds fall into the inverted cone-shaped cavity of the hole forming device 5. The seeds continue to rotate along with the hole forming device 5, when the deflector rod 3 touches the wobble plate 4, the deflector rod 3 drives the hole forming device 5 to be gradually opened along with the contact surface of the deflector rod 3 and the wobble plate 4 being larger, the opening position is maximum when the hole forming device 5 rotates to the lowest end, the seeds fall into soil dug by the hole forming device 5, the hole forming device 5 continues to rotate along with the movable plate 2, the deflector rod 3 completely rotates through the wobble plate 4, the hole forming device 5 is closed, and the seeding process is completed.
The guard plate 11 in the seed metering mechanism can remove redundant seeds falling into the holes of the seed metering wheel 10 from the holes, so that the agricultural requirement on precision seeding of one hole or two holes is ensured, meanwhile, the guard plate 11 can float radially on the seed metering wheel 10 due to the existence of the guard plate pressure spring 12, when the seed particles in the holes of the seed metering wheel 10 are too large or foreign matter impurities exist, the guard plate 11 is jacked up, the seeds cannot be clamped and damaged by the seed metering wheel 10 and the guard plate 11, and the seed metering wheel 10 or the guard plate 11 cannot be damaged by the foreign matter.
The scraper 24 is designed to have a grooved shape and is made of a ductile material, and also protects the seed metering wheel 10. The long baffle 17 can scrape the sundries on the circumferential surface of the seed metering wheel 10, and ensures the smoothness of the wheel surface of the seed metering wheel 10.
Claims (5)
1. The utility model provides a high-speed bunch planting dish with stir round seed metering mechanism, includes movable tray and fixed tray, set up the fixed tray lid on the fixed tray, fixed tray lid and fixed tray fixed connection have formed the chamber that is used for splendid attire seed between fixed tray and the fixed tray lid, the equipartition is installed cavitation ware group on the circumference of movable tray, lower part installation wobble plate mechanism behind the fixed tray, wobble plate mechanism is in between movable tray and the fixed tray, wobble plate mechanism and cavitation ware group are joined in marriage, its characterized in that: a deflector rod (3) is arranged in a hole forming device (5) of the hole forming device group, the deflector rod (3) contacts with the lower part of a wobble plate (4) of the wobble plate mechanism, and the wobble plate (4) is arranged at the rear lower part of a fixed plate (14) and is positioned between the fixed plate (14) and a movable plate (2); a short partition plate (13) and a long partition plate (17) are arranged in a cavity formed between the fixed disc (14) and the fixed disc cover (1), the short partition plate (13) fixedly presses a scraping plate (24) on the right part in the fixed disc (14) through a straight pressing plate (23), the long partition plate (17) is arranged on the left part in the fixed disc (14), a stirring wheel seed metering mechanism is arranged between the scraping plate (24) and the long partition plate (17), the stirring wheel seed metering mechanism comprises a stirring wheel mechanism and a seed metering mechanism, the stirring wheel mechanism is positioned at the upper part between the scraping plate (24) and the long partition plate (17), a seed metering mechanism is arranged below the stirring wheel mechanism, the seed metering mechanism is tangent to the front ends of the scraping plate (24) and the long partition plate (17), and the seed metering mechanism and the stirring wheel mechanism are arranged in the cavity formed between the fixed disc (14) and the fixed disc cover (1), and the seed metering mechanism and the stirring wheel mechanism are linked; the seed metering mechanism is positioned at the lower part in a cavity formed between the fixed disc (14) and the fixed disc cover (1) and is matched with the cavitation device group;
the seed metering mechanism comprises a seed metering wheel driving plate (6), a guard plate device, a seed metering wheel (10), a seed stirring device (9), a seed metering wheel shaft (21) and a seed stirring device shaft (20), wherein the seed metering wheel shaft (21), the seed stirring device shaft (20) are arranged between a fixed disc (14) and the fixed disc cover (1), the seed metering wheel driving plate (6) and the seed metering wheel (10) are arranged on the seed metering wheel shaft (21), dustpan-shaped nest holes are uniformly distributed on the outer circle of the seed metering wheel (10), the seed metering wheel driving plate (6) is located on the outer side of the fixed disc cover (1), the seed metering wheel driving plate (6) is in linkage with the seed stirring device driving plate (8) of the seed stirring device, the seed metering wheel (10) is located in a cavity formed by the fixed disc (14) and the fixed disc cover (1), the seed stirring device (9) is arranged on the fixed disc shaft (20), the seed stirring device (9) is matched with the seed metering wheel (10), the guard plate device is in contact with the seed metering wheel (10), and the seed stirring device driving plate (9) is located on two sides of the seed stirring device (24) and the seed stirring device (17) respectively.
2. The high-speed hill-drop tray with a whipping wheel seed mechanism of claim 1, wherein: the stirring mechanism comprises a stirring wheel driving plate (8), a stirring wheel (15), a stirring wheel shaft (16), an upper bearing (18) and a lower bearing (19), a plurality of teeth are arranged in the circumferential direction of the stirring wheel (15), the stirring wheel (15) and the stirring wheel driving plate (8) are arranged on the stirring wheel shaft (16), the stirring wheel driving plate (8) is arranged at the upper end of the stirring wheel shaft (16), the upper part of the stirring wheel shaft (16) is arranged on a fixed disc cover (1) through the upper bearing (18), the lower end of the stirring wheel shaft (16) is arranged on a fixed disc (14) through the lower bearing (19), the stirring wheel driving plate (8) is arranged on the outer side of the fixed disc cover (1), and the stirring wheel (15) is arranged in a cavity formed by the fixed disc (14) and the fixed disc cover (1), and the stirring wheel driving plate (8) and the seed metering mechanism are in linkage.
3. A high speed hill-drop tray with a whipped wheel seed mechanism as claimed in claim 1 or 2, wherein: the protection plate device comprises a pressure spring shaft (22), a protection plate pressure spring (12) and a protection plate (11), wherein one end of the protection plate pressure spring (12) is connected with the pressure spring shaft (22) in a hanging mode, the other end of the protection plate pressure spring is connected with the protection plate (11), the protection plate (11) is tangent to the seed sowing wheel (10) under the action of the protection plate pressure spring (12), and the pressure spring shaft (22) is arranged between the fixed disc (14) and the fixed disc cover (1).
4. A high speed hill-drop tray with a whipped wheel seed mechanism as defined in claim 3, wherein: the scraping plate (24) and the long partition plate (17) are made of materials with good toughness, and the front end of the scraping plate (24) is in a split sheet shape and is tangent to the seed sowing wheel (10).
5. The high-speed hill-drop tray with a wheel-stirring seed-metering mechanism of claim 1, wherein the high-speed hill-drop tray is mainly characterized by: the strong seeding device (9) is in a half crescent shape and can be embedded into the gap of the seeding wheel (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710267577.2A CN106900218B (en) | 2017-04-21 | 2017-04-21 | High-speed hill-drop tray with stirring wheel seed metering mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710267577.2A CN106900218B (en) | 2017-04-21 | 2017-04-21 | High-speed hill-drop tray with stirring wheel seed metering mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106900218A CN106900218A (en) | 2017-06-30 |
| CN106900218B true CN106900218B (en) | 2023-05-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710267577.2A Active CN106900218B (en) | 2017-04-21 | 2017-04-21 | High-speed hill-drop tray with stirring wheel seed metering mechanism |
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| CN (1) | CN106900218B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108419481A (en) * | 2018-03-21 | 2018-08-21 | 甘肃洮河拖拉机制造有限公司 | A kind of thumb wheel mechanism and its dibbler for installing thumb wheel mechanism |
| CN111357440B (en) * | 2020-02-26 | 2021-05-25 | 山东省农业机械科学研究院 | Seed box integrated dibbling and seed sowing device and grain dibbling machine |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1946213B2 (en) * | 1969-09-12 | 1971-09-02 | Heinrich Weiste & Co Gmbh, 4770 Soest | DOSING UNIT FOR PNEUMATICALLY WORKING DISTRIBUTION SYSTEMS |
| DE3429817A1 (en) * | 1984-08-14 | 1986-02-27 | Amazonen-Werke H. Dreyer Gmbh & Co Kg, 4507 Hasbergen | Machine for the discharge of seed and fertilizer |
| KR20110003361U (en) * | 2009-09-28 | 2011-04-05 | 김성수 | Apparatus for extension wheel to cultivator |
| CN201571322U (en) * | 2009-12-19 | 2010-09-08 | 石河子大学 | Precision seeder |
| CN104025774B (en) * | 2014-05-27 | 2016-05-11 | 甘肃洮河拖拉机制造有限公司 | A kind of two ratchet seeding hill-drop drill |
| CN204119782U (en) * | 2014-08-12 | 2015-01-28 | 昆明理工大学 | A kind of stirring-type nest eye wheel pseudo-ginseng precision seeder |
| CN204482304U (en) * | 2015-03-03 | 2015-07-22 | 甘肃农业大学 | Hill-drop planter seeding unit |
| CN205105582U (en) * | 2015-11-14 | 2016-03-30 | 甘肃洮河拖拉机制造有限公司 | Dibbler cavitation mechanism opens time -delay device |
| CN205510801U (en) * | 2016-01-14 | 2016-08-31 | 西北农林科技大学 | Small -sized seed seed metering ware |
| CN206835596U (en) * | 2017-04-21 | 2018-01-05 | 甘肃洮河拖拉机制造有限公司 | It is a kind of to carry the high speed point sowing disk for stirring wheel feed mechanism |
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2017
- 2017-04-21 CN CN201710267577.2A patent/CN106900218B/en active Active
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| CN106900218A (en) | 2017-06-30 |
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