CN108093779B - Sound piece differential speed type single-grain precision seeding apparatus - Google Patents

Sound piece differential speed type single-grain precision seeding apparatus Download PDF

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Publication number
CN108093779B
CN108093779B CN201711030498.6A CN201711030498A CN108093779B CN 108093779 B CN108093779 B CN 108093779B CN 201711030498 A CN201711030498 A CN 201711030498A CN 108093779 B CN108093779 B CN 108093779B
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China
Prior art keywords
fixed frame
plate
hole
seed
plants case
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Expired - Fee Related
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CN201711030498.6A
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Chinese (zh)
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CN108093779A (en
Inventor
刘彩玲
都鑫
宋建农
张福印
郑升祥
魏丹
昝映成
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China Agricultural University
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China Agricultural University
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    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01CPLANTING; SOWING; FERTILISING
    • A01C7/00Sowing
    • A01C7/20Parts of seeders for conducting and depositing seed

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  • Life Sciences & Earth Sciences (AREA)
  • Soil Sciences (AREA)
  • Environmental Sciences (AREA)
  • Sowing (AREA)

Abstract

The present invention relates to a kind of sound piece differential speed type single-grain precision seeding apparatus, it is the device for the amount seeding of agricultural machinery essence, belongs to agricultural machinery technological field.Including dispenser, two fixed frames, seeds protecting plate, plants case, adjustable plate and clear kind of brush;The two sides of dispenser are fixedly installed on fixed frame respectively, plants case is located at the upper right side of dispenser, the two sides of plants case are fixedly installed on fixed frame respectively, and adjustable plate is located at the left side central portion of plants case, are flexibly connected with plants case, clear kind of brush is located at the lower section of adjustable plate, it is fixedly connected with plants case, and is in contact with dispenser, for guaranteeing effectively clear kind, seeds protecting plate is located at the upper left side of dispenser, and the two sides of seeds protecting plate are fixedly installed on fixed frame respectively.Sound piece differential speed type single-grain precision seeding apparatus of the present invention makes seed orientation sequence by differential counter-rotating, improves seed-filling rate, reduces seed damage, to realize that simple grain precision metering device, high speed seeding provide a kind of new scheme.

Description

Sound piece differential speed type single-grain precision seeding apparatus
Technical field
It is the dress for agricultural machinery precise sowing the present invention relates to a kind of sound piece differential speed type single-grain precision seeding apparatus It sets, belongs to agricultural machinery technological field.
Background technique
Precise sowing refers to by accurate grain number, spacing and seed level, and seed is sown into soil.It can be monoseeding, Seed more than one can also be broadcast into a cave, it is desired to which every seed number per is equal.Precise sowing can save seed, and between being not required to Seedling reduces the supply of fertilizer, and with common drilling ratio, seed is evenly distributed in the line, and crop daylighting is more preferably thus conducive to crop Growth, yield can be improved.
In recent years, the continuous development of breeding, seed working process technology, pesticide, herbicide and water conservancy irrigation technology with it is complete It is kind, so that the germination percentage of seed and survival rate of seedlings is had certain guarantee, precise sowing technology is made to have more reliable guarantee, simple grain essence It broadcasts and is widely applied in foreign countries.
In China, the R and D of precise sowing technology start from the beginning of the seventies, so far there are no being widely used, Main cause is no suitable precision metering device component.In recent years, China was concentrated mainly on the research of single grain fine sowing feed mechanism for seed The relatively regular seed of the shapes such as circle, such as corn and soybean, substantially can reach the requirement of simple grain precision metering device, but for filling The seed of kind process and its complexity, such as non-circular seed realize that single grain fine sowing is still a big difficulty.In addition, the list that China is current Grain Precision Seeding feed mechanism for seed seed-filling rate is not high, and mechanical single grain fine sowing feed mechanism for seed seeding speed is influenced by structure also should not be too fast, no Then seedling-damaging rate will greatly promote.In present China's mechanical seed sowing device finger-clipping type seed metering device due to manufacturing process complexity, quick abrasion, It is at high cost etc. to fail largely to popularize;Bucket wheel type seeding unit scoops out seed by the small spoon of special shape, therefore of different shapes Seed needs different bucket wheels, bad adaptability;For disc type feed mechanism for seed due to the particularity of structure, seed is easily damaged, is adding After shield kind device, higher seeding speed can not be met;In terms of agronomy, not with single grain fine sowing high-yield culture technique Disconnected Demonstration And Extension, there is an urgent need to be suitable for simple grain, high speed, the Precision Seeding feed mechanism for seed of the non-circular seeds such as peanut, wheat, rice.
Summary of the invention
In view of the deficiencies in the prior art, the purpose of the present invention is to provide one kind in seeding process, simple grain rate High, seed damages the feed mechanism for seed of completion seed simple grain precise sowing that is small, easy to use, adaptable, being capable of stability and high efficiency.
To achieve the above objectives, the technical solution adopted by the present invention is that:
A kind of sound piece differential speed type single-grain precision seeding apparatus, comprising: 1, two fixed frame 9 of dispenser, seeds protecting plate 10, kind Case 11, adjustable plate 12 and clear kind of brush 13;
The two sides of dispenser 1 are fixedly installed in respectively on fixed frame 9, and plants case 11 is located at the upper right side of dispenser 1, kind The two sides of case 11 are fixedly installed in respectively on fixed frame 9, and adjustable plate 12 is located at the left side central portion of plants case 11, even with 11 activity of plants case It connects, clear kind of brush 13 is located at the lower section of adjustable plate 12, is fixedly connected with plants case 11, and be in contact with dispenser 1, seeds protecting plate 10 In the upper left side of dispenser 1, the two sides of seeds protecting plate 10 are fixedly installed in respectively on fixed frame 9.
On the basis of above scheme, the fixed frame 9 is L-type fixed frame, and the bottom surface of fixed frame 9 is pacified equipped with fixed frame Hole 17 is filled, the left side central portion of side is equipped with fixation hole I, and the upper left side of fixation hole I is equipped with fixation hole II, the side of fixed frame 9 It is equipped with seeds protecting plate mounting hole 18 at the top edges of left side, plants case mounting hole 20 is equipped with above right side, in fixation hole I and fixation hole II Be surrounded by stationary plate mounting hole 19.
On the basis of above scheme, the fixed frame 9 is connected by the rack bolt of fixed frame mounting hole 17 and seeder It connects.
On the basis of above scheme, the two sides of the seeds protecting plate 10 pass through seeds protecting plate mounting hole 18 and fixed frame 9 respectively It is bolted, the two sides of plants case 11 pass through plants case mounting hole 20 respectively and are bolted with fixed frame 9.
On the basis of above scheme, the dispenser 1 includes: 2, two movable plates 3 of intermediate and two stationary plates 4;Institute It states and is equipped with feed shaft at the center of intermediate 2, the periphery of intermediate 2 is equipped with equally distributed round hole, sets on feed shaft There are two pinion gear 6, pinion gear 6 is symmetrically placed in the two sides of intermediate 2;Two movable plates 3 are symmetrically placed in the two sides of intermediate 2, with Intermediate 2 is in close contact and the axle sleeve 7 by being located on feed shaft is positioned, and movable plate 3 and pinion gear 6 is made to be in same flat Face;Third wheel 5 is equipped between the inside and pinion gear 6 of movable plate 3, third wheel 5 is engaged with pinion gear 6, and the inside of movable plate 3 is equipped with tooth, is moved Piece 3 is engaged by tooth with third wheel 5, and third wheel 5 is located in shaft;Feed shaft on intermediate 2 drives pinion gear 6 to rotate, pinion gear 6 Third wheel 5 is driven to rotate, third wheel 5 drives movable plate 3 to rotate backward;
The stationary plate 4 is located at the side of movable plate 3, and stationary plate 4 is equipped with the cylindrical projection matched with movable plate 3, stationary plate 4 it is upper Periphery is equipped with circular hole;Shaft passes through the fixation hole II on circular hole and fixed frame 9 on stationary plate 4, and passes through locking nut 21 It is fixedly connected with stationary plate 4, stationary plate 4 is fixedly mounted on fixed frame 9 by stationary plate mounting hole 19.
On the basis of above scheme, the feed shaft is equipped with bearing 22, and bearing 22 is located at the side of axle sleeve 7, axle sleeve 7 Positioned at the side of pinion gear 6, feed shaft pass through the fixation hole I on fixed frame 9 by bearing 22 and bearing block realize intermediate 2 with The positioning of fixed frame 9, bearing block are fixed on fixation hole I by circlip 8.
On the basis of above scheme, the clear kind of brush 13 is in contact with intermediate 2 and two movable plates 3, for guaranteeing have Imitate clear kind.
On the basis of above scheme, the circumferential direction of the movable plate 3 is evenly distributed with oblong type hole 14, and oblong type hole 14 is equipped with The guiding slope in hole is fallen into convenient for seed, ramp angles are 40 °~65 °, and the inside of movable plate 3 is in adjacent oblong type hole 14 Between be equipped with push away kind of annular groove 15.
On the basis of above scheme, the cylindrical projection be equipped with seeding block 16, seeding block 16 with push away 15 phase of kind of annular groove Cooperation.
On the basis of above scheme, half path length 2-4cm of the radius ratio movable plate 3 of the intermediate 2 is filling kind to realize It sorts to the orientation of seed in area;Half path length 1-2mm of the radius ratio movable plate 3 of stationary plate 4, convenient for when seed cross or tiltedly in 4 He of stationary plate When on the inclined-plane of intermediate 2, seed has a difference in height, is easy to implement seed and aligns and enter oblong type hole 14 to mention High seed-filling rate.
On the basis of above scheme, movable plate 3 and intermediate 2 rotate for the differential of opposite direction, and stationary plate 4 does not rotate, with Just the horizontal seed above oblong type hole 14 movable plate 3 and intermediate 2 differential and rotate backward lower realization by seed long axis The direction direction arrangement vertical with rotor shaft direction.It realizes that seed aligns, improves seed-filling rate, realize high speed essence amount seeding.
The beneficial effects of the present invention are:
By friction fill kind of principle using movable plate, stationary plate differential in the way of devise one kind and can be realized seed and fill kind in time With the single-grain precision seeding apparatus of seeding.When carrying out seeding operation, seed enters plants case, and feed shaft drives movable plate and intermediate phase The rotation of opposite direction differential, under the rubbing action of seed rotates in an opposite direction in the area Chong Zhong movable plate and intermediate, seed becomes Long axis direction is axially vertical with feed shaft, under the difference in height and stationary plate of intermediate and movable plate and the difference in height of movable plate, convenient for kind Son is filled with type hole, improves seed-filling rate and reduces seed damage;When seed long axis direction is axial, during rotation due to dynamic The relative rotation of piece and stationary plate and the relative rotation of intermediate and stationary plate generate seed and rub and rotate seed, be allowed to long Axis direction is parallel with type hole long axis, plays the role of orienting seed and sort, and the orderly orientation of seed is made to be filled with type hole.It is filled with kind The type hole of son completes seeding process by the seeding block pushed away on kind of annular groove and stationary plate inside movable plate behind the area Hu Zhong jointly.
Detailed description of the invention
The present invention has following attached drawing:
A kind of sound chip single-grain precision seeding apparatus structural schematic diagram one of Fig. 1.
A kind of sound chip single-grain precision seeding apparatus structural schematic diagram two of Fig. 2.
A kind of sound chip single-grain precision seeding apparatus structural schematic diagram three of Fig. 3.
Fig. 4 is the A-A cross-sectional view of Fig. 3.
A kind of dispenser schematic diagram of sound chip single-grain precision seeding apparatus of Fig. 5.
Fig. 6 is the A-A cross-sectional view of Fig. 5.
A kind of movable plate schematic diagram of sound chip single-grain precision seeding apparatus of Fig. 7.
A kind of stationary plate schematic diagram of sound chip single-grain precision seeding apparatus of Fig. 8.
A kind of intermediate schematic diagram of sound chip single-grain precision seeding apparatus of Fig. 9.
Appended drawing reference:
1 dispenser, 2 intermediate
3 movable plate, 4 stationary plate
5 third wheel, 6 pinion gear
7 axle sleeve, 8 circlip
9 fixed frame, 10 seeds protecting plate
11 plants case, 12 adjustable plate
13 clear kinds of 14 oblong type holes of brush
15 push away 16 seeding block of kind of annular groove
17 fixed frame mounting hole, 18 seeds protecting plate mounting hole
19 stationary plate mounting hole, 20 plants case mounting hole
21 locking nut, 22 bearing
Specific embodiment
Below in conjunction with attached drawing, invention is further described in detail.
As shown in figure 1-9, a kind of sound piece differential speed type single-grain precision seeding apparatus, comprising: 1, two fixed frame of dispenser 9, seeds protecting plate 10, plants case 11, adjustable plate 12 and clear kind of brush 13;
The two sides of dispenser 1 are fixedly installed in respectively on fixed frame 9, and plants case 11 is located at the upper right side of dispenser 1, kind The two sides of case 11 are fixedly installed in respectively on fixed frame 9, and adjustable plate 12 is located at the left side central portion of plants case 11, even with 11 activity of plants case It connects, clear kind of brush 13 is located at the lower section of adjustable plate 12, is fixedly connected with plants case 11, and be in contact with dispenser 1, seeds protecting plate 10 In the upper left side of dispenser 1, the two sides of seeds protecting plate 10 are fixedly installed in respectively on fixed frame 9.
On the basis of above scheme, the fixed frame 9 is L-type fixed frame, and the bottom surface of fixed frame 9 is pacified equipped with fixed frame Hole 17 is filled, the left side central portion of side is equipped with fixation hole I, and the upper left side of fixation hole I is equipped with fixation hole II, the side of fixed frame 9 It is equipped with seeds protecting plate mounting hole 18 at the top edges of left side, plants case mounting hole 20 is equipped with above right side, in fixation hole I and fixation hole II Be surrounded by stationary plate mounting hole 19.
On the basis of above scheme, the fixed frame 9 is connected by the rack bolt of fixed frame mounting hole 17 and seeder It connects.
On the basis of above scheme, the two sides of the seeds protecting plate 10 pass through seeds protecting plate mounting hole 18 and fixed frame 9 respectively It is bolted, the two sides of plants case 11 pass through plants case mounting hole 20 respectively and are bolted with fixed frame 9.
On the basis of above scheme, the dispenser 1 includes: 2, two movable plates 3 of intermediate and two stationary plates 4;Institute It states and is equipped with feed shaft at the center of intermediate 2, the periphery of intermediate 2 is equipped with equally distributed round hole, sets on feed shaft There are two pinion gear 6, pinion gear 6 is symmetrically placed in the two sides of intermediate 2;Two movable plates 3 are symmetrically placed in the two sides of intermediate 2, with Intermediate 2 is in close contact and the axle sleeve 7 by being located on feed shaft is positioned, and movable plate 3 and pinion gear 6 is made to be in same flat Face;Third wheel 5 is equipped between the inside and pinion gear 6 of movable plate 3, third wheel 5 is engaged with pinion gear 6, and the inside of movable plate 3 is equipped with tooth, is moved Piece 3 is engaged by tooth with third wheel 5, and third wheel 5 is located in shaft;Feed shaft on intermediate 2 drives pinion gear 6 to rotate, pinion gear 6 Third wheel 5 is driven to rotate, third wheel 5 drives movable plate 3 to rotate backward;
The stationary plate 4 is located at the side of movable plate 3, and stationary plate 4 is equipped with the cylindrical projection matched with movable plate 3, stationary plate 4 it is upper Periphery is equipped with circular hole;Shaft passes through the fixation hole II on circular hole and fixed frame 9 on stationary plate 4, and passes through locking nut 21 It is fixedly connected with stationary plate 4, stationary plate 4 is fixedly mounted on fixed frame 9 by stationary plate mounting hole 19.
On the basis of above scheme, the feed shaft is equipped with bearing 22, and bearing 22 is located at the side of axle sleeve 7, axle sleeve 7 Positioned at the side of pinion gear 6, feed shaft pass through the fixation hole I on fixed frame 9 by bearing 22 and bearing block realize intermediate 2 with The positioning of fixed frame 9, bearing block are fixed on fixation hole I by circlip 8.
On the basis of above scheme, the clear kind of brush 13 is in contact with intermediate 2 and two movable plates 3, for guaranteeing have Imitate clear kind.
On the basis of above scheme, the circumferential direction of the movable plate 3 is evenly distributed with oblong type hole 14, and oblong type hole 14 is equipped with The guiding slope in hole is fallen into convenient for seed, ramp angles are 40 °~65 °, and the inside of movable plate 3 is in adjacent oblong type hole 14 Between be equipped with push away kind of annular groove 15.
On the basis of above scheme, the cylindrical projection be equipped with seeding block 16, seeding block 16 with push away 15 phase of kind of annular groove Cooperation.
On the basis of above scheme, half path length 2-4cm of the radius ratio movable plate 3 of the intermediate 2 is filling kind to realize It sorts to the orientation of seed in area;Half path length 1-2mm of the radius ratio movable plate 3 of stationary plate 4, convenient for when seed cross or tiltedly in 4 He of stationary plate When on the inclined-plane of intermediate 2, seed has a difference in height, is easy to implement seed and aligns and enter oblong type hole 14 to mention High seed-filling rate.
On the basis of above scheme, movable plate 3 and intermediate 2 rotate for the differential of opposite direction, and stationary plate 4 does not rotate, with Just the horizontal seed above oblong type hole 14 movable plate 3 and intermediate 2 differential and rotate backward lower realization by seed long axis The direction direction arrangement vertical with rotor shaft direction.It realizes that seed aligns, improves seed-filling rate, realize high speed essence amount seeding.
The present invention is filled kind of principle and devised one kind in the way of movable plate, stationary plate and intermediate by friction can be realized kind The sub single-grain precision seeding apparatus for filling kind and seeding in time.Seed is realized in the relative rotational motion of movable plate, stationary plate and intermediate Simple grain fills kind, completes seeding under the collective effect that movable plate pushes away kind of annular groove and stationary plate seeding block, can by the shape design of type hole The seeding operation of a variety of seeds is adapted to, has that simple grain rate is high, damage is small, structure is simple, easy to use, stability and high efficiency and adaptability The features such as strong.
Last should be noted that above embodiments are only to illustrate technical solution of the present invention rather than limit, although ginseng It is described the invention in detail according to preferred embodiment, those skilled in the art should understand that, it can be to the present invention Technical solution modify or equivalent substitute should all cover without departing from the spirit and scope of the technical solution of the present invention In invention scope of the claims.
The content being not described in detail in this specification belongs to the prior art well known to professional and technical personnel in the field.

Claims (8)

1. a kind of sound piece differential speed type single-grain precision seeding apparatus characterized by comprising dispenser (1), two fixed frames (9), seeds protecting plate (10), plants case (11), adjustable plate (12) and clear kind of brush (13);
The two sides of dispenser (1) are fixedly installed in respectively on fixed frame (9), and plants case (11) is located at the upper right of dispenser (1) Side, the two sides of plants case (11) are fixedly installed in respectively on fixed frame (9), and adjustable plate (12) is located at the left side central portion of plants case (11), It is flexibly connected with plants case (11), clear kind of brush (13) is located at the lower section of adjustable plate (12), is fixedly connected with plants case (11), and and seeding Device (1) is in contact, and seeds protecting plate (10) is located at the upper left side of dispenser (1), and the two sides of seeds protecting plate (10) are fixedly mounted respectively In on fixed frame (9);
The fixed frame (9) is L-type fixed frame, and the bottom surface of fixed frame (9) is equipped with fixed frame mounting hole (17), fixed frame (9) The left side central portion of side be equipped with fixation hole I, the upper left side of fixation hole I is equipped with fixation hole II, the left side of the side of fixed frame (9) Seeds protecting plate mounting hole (18) are equipped at top edges, plants case mounting hole (20) are equipped with above right side, in fixation hole I and fixation hole II Be surrounded by stationary plate mounting hole (19);
The dispenser (1) includes: intermediate (2), two movable plates (3) and two stationary plates (4);
Feed shaft is equipped at the center of the intermediate (2), the periphery of intermediate (2) is equipped with equally distributed round hole, It is set on feed shaft there are two pinion gear (6), pinion gear (6) is symmetrically placed in the two sides of intermediate (2);
Two movable plates (3) are symmetrically placed in the two sides of intermediate (2), are in close contact with intermediate (2) and by being located on feed shaft Axle sleeve (7) positioned, make movable plate (3) and pinion gear (6) be in approximately the same plane, the inside and pinion gear (6) of movable plate (3) Between be equipped with third wheel (5), third wheel (5) engage with pinion gear (6), and equipped with tooth, movable plate (3) passes through tooth and mistake for the inside of movable plate (3) (5) engagement is taken turns, third wheel (5) is located in shaft;Feed shaft on intermediate (2) drives pinion gear (6) rotation, pinion gear (6) band Dynamic third wheel (5) rotation, third wheel (5) drive movable plate (3) to rotate backward;
The stationary plate (4) is located at the side of movable plate (3), and stationary plate (4) is equipped with the cylindrical projection matched with movable plate (3), stationary plate (4) upper periphery is equipped with circular hole, and shaft passes through the fixation hole II on circular hole and fixed frame (9) on stationary plate (4), and passes through Locking nut (21) is fixedly connected with stationary plate (4), and stationary plate (4) is fixedly mounted on fixed frame (9) by stationary plate mounting hole (19).
2. sound piece differential speed type single-grain precision seeding apparatus as described in claim 1, which is characterized in that the fixed frame (9) is logical It crosses fixed frame mounting hole (17) and the rack of seeder is bolted.
3. sound piece differential speed type single-grain precision seeding apparatus as described in claim 1, which is characterized in that the seeds protecting plate (10) Two sides pass through seeds protecting plate mounting hole (18) respectively and are bolted with fixed frame (9), and the two sides of plants case (11) are pacified by plants case respectively Dress hole (20) is bolted with fixed frame (9).
4. sound piece differential speed type single-grain precision seeding apparatus as described in claim 1, which is characterized in that the feed shaft is equipped with Bearing (22), bearing (22) are located at the side of axle sleeve (7), and axle sleeve (7) is located at the side of pinion gear (6), and feed shaft, which passes through, to be fixed Fixation hole I on frame (9) realizes the positioning of intermediate (2) and fixed frame (9) by bearing (22) and bearing block, and bearing block passes through Circlip (8) is fixed on fixation hole I.
5. sound piece differential speed type single-grain precision seeding apparatus as described in claim 1, which is characterized in that the clear kind of brush (13) with Intermediate (2) and two movable plates (3) are in contact, for guaranteeing effectively clear kind.
6. sound piece differential speed type single-grain precision seeding apparatus as described in claim 1, which is characterized in that the week of the movable plate (3) To uniformly distributed oblong type hole (14), oblong type hole (14), which is equipped with, falls into the guiding slope in hole, ramp angles convenient for seed It is 40 °~65 °, the inside of movable plate (3) is equipped between adjacent oblong type hole (14) and pushes away kind of an annular groove (15).
7. sound piece differential speed type single-grain precision seeding apparatus as claimed in claim 6, which is characterized in that set in the cylindrical projection Have seeding block (16), seeding block (16) is matched with kind of an annular groove (15) is pushed away.
8. sound piece differential speed type single-grain precision seeding apparatus as claimed in claim 6, which is characterized in that the intermediate (2) Half path length 2-4cm of radius ratio movable plate (3) is sorted with realizing in orientation of the area Chong Zhong to seed;The radius ratio movable plate of stationary plate (4) (3) half path length 1-2mm, convenient for when seed cross or tiltedly on the inclined-plane of stationary plate (4) and intermediate (2) when, seed has a height It is poor to spend, and is easy to implement seed and aligns and enter oblong type hole (14) to improve seed-filling rate.
CN201711030498.6A 2017-10-30 2017-10-30 Sound piece differential speed type single-grain precision seeding apparatus Expired - Fee Related CN108093779B (en)

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CN201711030498.6A CN108093779B (en) 2017-10-30 2017-10-30 Sound piece differential speed type single-grain precision seeding apparatus

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Application Number Priority Date Filing Date Title
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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109121601B (en) * 2018-08-14 2021-05-04 中国农业大学 Differential formula district seed metering device
CN110679248B (en) * 2019-11-25 2022-03-11 吉林省农业机械研究院 Flexible adjustment seed cleaning device suitable for pneumatic roller type seed sowing device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0956756B1 (en) * 1998-04-04 2003-07-02 Amazonen-Werke H. Dreyer GmbH & Co. KG Combined normal and fine seed wheel
CN202535715U (en) * 2011-12-13 2012-11-21 东北农业大学 Friction type vertical circular disc seed sowing device
CN204272643U (en) * 2014-10-17 2015-04-22 河北农业大学 A kind of suction type precise seeder
CN104756652A (en) * 2015-04-20 2015-07-08 中国农业大学 Non-circular seed single-grain precision seed-metering device
CN107258163A (en) * 2017-07-17 2017-10-20 农业部南京农业机械化研究所 The accurate seeding apparatus of the special-shaped seed simple grain of mechanical revolving type

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0956756B1 (en) * 1998-04-04 2003-07-02 Amazonen-Werke H. Dreyer GmbH & Co. KG Combined normal and fine seed wheel
CN202535715U (en) * 2011-12-13 2012-11-21 东北农业大学 Friction type vertical circular disc seed sowing device
CN204272643U (en) * 2014-10-17 2015-04-22 河北农业大学 A kind of suction type precise seeder
CN104756652A (en) * 2015-04-20 2015-07-08 中国农业大学 Non-circular seed single-grain precision seed-metering device
CN107258163A (en) * 2017-07-17 2017-10-20 农业部南京农业机械化研究所 The accurate seeding apparatus of the special-shaped seed simple grain of mechanical revolving type

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