CN109379939A - A kind of general grain conductor of reconfigurable - Google Patents
A kind of general grain conductor of reconfigurable Download PDFInfo
- Publication number
- CN109379939A CN109379939A CN201811358665.4A CN201811358665A CN109379939A CN 109379939 A CN109379939 A CN 109379939A CN 201811358665 A CN201811358665 A CN 201811358665A CN 109379939 A CN109379939 A CN 109379939A
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- Prior art keywords
- hole
- grain conductor
- adjustment frame
- fixed
- connection strap
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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
- A01C7/20—Parts of seeders for conducting and depositing seed
- A01C7/206—Seed pipes
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- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Sowing (AREA)
- Storage Of Harvested Produce (AREA)
Abstract
A kind of general grain conductor category agricultural machinery technological field of reconfigurable, fixed frame, adjustment frame I and adjustment frame II are placed on the conical corrugated pipe in grain conductor from top to bottom in the present invention, fixed strip, connection strap II and connection strap I arrange from top to bottom, and the positive back of conical corrugated pipe is fixed in front of fixed strip, connection strap II and connection strap I；It is flexibly connected in the middle part of the hole VII of fixed strip and the hole VIII of connection strap II and the rear bar of fixed frame；The hole Ⅸ of connection strap II and the hole Ⅹ of connection strap I are flexibly connected with the middle part of bolt I in adjustment frame I；The hole Ⅺ of connection strap I is flexibly connected with the middle part of bolt in adjustment frame II；The present invention need to only change the length of connection sheet I and connection sheet II in adjustment frame I and adjustment frame II, it can be achieved with the Adjusting Shape of grain conductor, the present invention can adapt to the seeding operation of different kinds of subtype by the shape of change grain conductor, and seeding quality and seeding accuracy are high.
Description
Technical field
The invention belongs to agricultural machinery technological fields, and in particular to a kind of reconfigurable applied to seeding operation machinery leads to
Use grain conductor.
Background technique
Seeder metering system is the important component of seeder, for precise sowing, metering system
Can quality to directly affecting seeding quality.Metering system is mainly made of feed mechanism for seed and grain conductor two parts, at present researcher
The improvement of seed-metering performance is concentrated mainly in the research to seed sowing device performance, especially the research of universal seeding apparatus has been taken
Certain research achievement was obtained, but rarely has people to study the structure of general grain conductor.However the grain conductor pair of different structure
Seeding quality also has a certain impact, and some researches show that linear grain conductors to be more suitable for the seed of lighter weight, as sorghum,
Corn etc., and the grain conductor of macrobending type is more suitable for the biggish seeds of quality such as sowing beans, peanut.Therefore, for general
For feed mechanism for seed, in order to reach preferable operation effectiveness, need to configure adaptable with it lead in growing different crops
Kind pipe.
Summary of the invention
The purpose of the present invention is to provide a kind of to be applicable to the general of different seed seeding operations on seeder
Grain conductor structure changes the shape of grain conductor by different kinds of subtypes of matching, can be raising seeding quality and seeding accuracy
Play positive effect.
The present invention is by fixed frame A, I B of adjustment frame, II C of adjustment frame, grain conductor 1, connection strap I 2, connection strap II 3 and fixed strip
4 compositions, fixed frame A, I B of adjustment frame and II C of adjustment frame are placed on the conical corrugated pipe 35 in grain conductor 1 from top to bottom, wherein fixing
The rear end frame A is located at graduation mark I 5；I rear end B of adjustment frame is located at graduation mark II 6；II rear end C of adjustment frame is located at graduation mark III 7
Place；Fixed strip 4, connection strap II 3 and connection strap I 2 arrange from top to bottom, and 4 lower end of fixed strip, II 3 lower end of connection strap and connection
The positive back of conical corrugated pipe 35 in grain conductor 1 is fixed in front of I 2 lower end of item；The hook IV 28 of fixed strip 4 is hung on grain conductor
1 34 rear end of upper pipe sleeve；Activity connects in the middle part of the rear bar of the hole VII 29 of fixed strip 4 and the hole VIII 30 of connection strap II 3 and fixed frame A
It connects；The hole Ⅸ 31 of connection strap II 3 and the hole Ⅹ 32 of connection strap I 2 are flexibly connected with the middle part of bolt I 17 in I B of adjustment frame；Connection
The hole Ⅺ 33 of item I 2 is flexibly connected with the middle part of bolt in II C of adjustment frame.The inside of II C of fixed frame A, I B of adjustment frame and adjustment frame
Chamfered shape should be slightly bigger than the outer profile that grain conductor 1 installs section, to guarantee that connection strap I 2, connection strap II 3 and fixed strip 4 have foot
Enough installation spaces.
The general grain conductor of the reconfigurable, which is characterized in that the fixed frame A is by fixed ring 8, I 9 and of hook
Link up with II 10 composition, wherein fixed ring 8 be open front pentagon, the setting of opening be in order to be easily installed upper fixed strip 4,
It links up with I 9 and is fixed in open right end before fixed ring 8, hook II 10 is fixed in open left end, hook I 9 and hook II before fixed ring 8
The spacing of 10 front end to 8 rear end of fixed ring is m4, m4Size meet the graduation mark I 5 that fixed ring 8 can be placed outside grain conductor 1
Place.
The general grain conductor of the reconfigurable, which is characterized in that the structure of II C of I B of adjustment frame and adjustment frame
It is identical, it is made of nut I 11, connection sheet I 12, connection sheet II 14, bolt I 17, fixing card III 23 and connector 25,
Middle connector 25 is in U-shape；I 12 rear end of connection sheet is equipped with hole I 13, and II 14 rear end of connection sheet is equipped with hole II 15；I 12 front end of connection sheet
It is affixed with connector (25) left side；II 14 front end of connection sheet and connector (25) the right are affixed；Bolt I 17 is through connection sheet I 12
Hole I 13 and the hole of connection sheet II 14 II 15, are threadedly coupled with nut I 11；It links up with III 23 and is fixed in 25 front end of connector center；Even
Contact pin I 12 is equal with the length L2 of connection sheet II 14, meets the replacement for being convenient for connection sheet；II C of I B of adjustment frame and adjustment frame
Length L1=m4+R mm, wherein R be I 12 rear end circular arc of connection sheet radius, the setting of L1 size can guarantee hook I 9,
II 10, hook III 23 and hook IV 28 are linked up on straight line perpendicular to the ground, consequently facilitating it is fixed on the rack,
It can be by changing the connection sheet I 12 of I B of adjustment frame and II C of adjustment frame and the length of connection sheet II 14, to realize its difference with this
Deformation required for driving grain conductor 1 to occur that it in the horizontal direction in the position of graduation mark II 6 and graduation mark III 7.
The general grain conductor of the reconfigurable, which is characterized in that the grain conductor 1 is by upper pipe sleeve 34, conical wave
Line pipe 35 and lower pipe sleeve 36 composition, the cone angle alpha of conical corrugated pipe 35 are 2.5-5 degree, and the diameter D2 of lower pipe sleeve 36 is 30-
50mm, diameter D1=(D2+2mtan α) mm of upper pipe sleeve 34,1 overall length m of grain conductor are 418-458mm, the height h1 of upper pipe sleeve 34
It is 30mm for 30mm, the height h2 of lower pipe sleeve 36, the material of grain conductor 1 can be metal wave made of zinc-plated or not zinc-plated thin steel strip
Line pipe；Graduation mark I 5, graduation mark II 6 and graduation mark III 7 are equipped with behind conical corrugated pipe 35 from top to bottom；Graduation mark I 5 with it is upper
The spacing m of 34 lower end of pipe sleeve1For 206mm, the spacing m of graduation mark I 5 and graduation mark II 62For 80mm, graduation mark II 6 and graduation mark
III 7 spacing m3For 42mm, graduation mark position is selected as its Deformation Curvature larger part.
The general grain conductor of the reconfigurable, which is characterized in that I 2 upper end of connection strap is equipped with hole Ⅹ 32, connection
I 2 lower end of item is equipped with hole Ⅺ 33, the pitch of holes L5=m in hole Ⅹ 32 and hole Ⅺ 333/cosαmm；II 3 upper end of connection strap is equipped with hole VIII
30, II 3 lower end of connection strap is equipped with hole Ⅸ 31, the pitch of holes L4=m in hole VIII 30 and hole Ⅸ 312/cosαmm；4 upper end of fixed strip is set
There is hook IV 28,4 lower end of fixed strip is equipped with hole VII 29, and IV 28 lower ends of hook and VII 29 center spacing L3 of hole are=(h1+m1)/cos
αmm。
The general grain conductor of the reconfigurable, which is characterized in that the Adjusting Shape of the grain conductor 1 only needs to change
The length of connection sheet I 12 and connection sheet II 14 can be completed in II C of I B of adjustment frame and adjustment frame.
The present invention mainly matches use with universal seeding apparatus, when sowing different seeds, passes through replacement I B of adjustment frame and tune
The length of connection sheet I 12 and connection sheet II 14 is in whole II C of frame to realize the change of grain conductor shape, and then improves grain conductor to kind
The sowing adaptability of son is particularly suitable for precise sowing operation so as to improve seeding accuracy and seeding quality.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the general grain conductor of reconfigurable
Fig. 2 is the structural schematic diagram of grain conductor
Fig. 3 is the structural schematic diagram of fixed frame A
Fig. 4 is the explosive view of I B of adjustment frame (II C of adjustment frame)
Fig. 5 is the axonometric drawing of I B of adjustment frame (II C of adjustment frame)
Fig. 6 is the side view of I B of adjustment frame (II C of adjustment frame)
Fig. 7 is the structural schematic diagram of fixed strip 4
Fig. 8 is the structural schematic diagram of connection strap II 3
Fig. 9 is the structural schematic diagram of connection strap I 2
Figure 10 is the structural schematic diagram of deformed grain conductor
Wherein: I 3. connection strap of A. fixed frame B. adjustment frame I C. adjustment frame, II 1. grain conductor, 2. connection strap, II 4. fixed strip 5.
I 6. graduation mark of graduation mark, II 7. graduation mark, III 8. fixed ring 9. hook, I 10. hook II 11. nut, I 12. connection sheet, I 13. hole I
14. II 15. hole of connection sheet, II 16. screw thread, 17. bolt, I 18. nut, II 19. hole, III 20. hole, IV 21. bolt, II 22. bolt III 23.
Link up with III 24. hole, V 25. connector, 26. hole, VI 27. nut III 28. hook, IV 29. hole, VII 30. hole, VIII 31. hole, Ⅸ 32. hole Ⅹ
33. the lower pipe sleeve of 35. conical corrugated pipe 36. of pipe sleeve on hole Ⅺ 34.
Specific embodiment
Embodiments of the present invention are described further with reference to the accompanying drawing.
As depicted in figs. 1 and 2, the present invention is by fixed frame A, I B of adjustment frame, II C of adjustment frame, grain conductor 1, connection strap I 2, company
Narrow bars II 3 and fixed strip 4 form, and fixed frame A, I B of adjustment frame and II C of adjustment frame are placed on the conical wave in grain conductor 1 from top to bottom
Line pipe 35, wherein the rear end fixed frame A is located at graduation mark I 5；I rear end B of adjustment frame is located at graduation mark II 6；After II C of adjustment frame
End is located at graduation mark III 7；Fixed strip 4, connection strap II 3 and connection strap I 2 arrange from top to bottom, and 4 lower end of fixed strip, connection
The positive back of conical corrugated pipe 35 in grain conductor 1 is fixed in front of I 2 lower end of II 3 lower end of item and connection strap；The extension of fixed strip 4
Hook IV 28 is hung on 34 rear end of upper pipe sleeve of grain conductor 1；The hole VIII 30 and fixed frame A's in the hole VII 29 and connection strap II 3 of fixed strip 4
It is flexibly connected in the middle part of rear bar；The middle part of bolt I 17 in the hole Ⅹ 32 and I B of adjustment frame of the hole Ⅸ 31 of connection strap II 3 and connection strap I 2
It is flexibly connected；The hole Ⅺ 33 of connection strap I 2 is flexibly connected with the middle part of bolt in II C of adjustment frame.Fixed frame A, I B of adjustment frame and tune
The inside chamfered shape of whole II C of frame should be slightly bigger than the outer profile that grain conductor 1 installs section, to guarantee connection strap I 2, connection strap II 3
There are enough installation spaces with fixed strip 4.
As shown in figure 3, the general grain conductor of the reconfigurable, which is characterized in that the fixed frame A is by fixed ring
8, II 10 composition of hook I 9 and hook, wherein fixed ring 8 is the pentagon of open front, and the setting of opening is to make upper fixed strip
4 are easily installed, and hook I 9 is fixed in open right end before fixed ring 8, and hook II 10 is fixed in open left end before fixed ring 8, hook I
9 and hook II 10 front end to 8 rear end of fixed ring spacing be m4, m4Size meet fixed ring 8 and can be placed outside grain conductor 1
At graduation mark I 5.
As shown in Figures 4 to 6, the general grain conductor of the reconfigurable, which is characterized in that I B of adjustment frame and
The structure of II C of adjustment frame is identical, by nut I 11, connection sheet I 12, connection sheet II 14, bolt I 17, III 23 and of fixing card
Connector 25 forms, and wherein connector 25 is in U-shape；I 12 rear end of connection sheet is equipped with hole I 13, and II 14 rear end of connection sheet is equipped with hole II
15；I 12 front end of connection sheet and connector (25) left side are affixed；II 14 front end of connection sheet and connector (25) the right are affixed；Bolt I
The hole II 15 in 17 holes I 13 and connection sheet II 14 through connection sheet I 12, is threadedly coupled with nut I 11；It links up with III 23 and is fixed in connection
25 front end of part center；Connection sheet I 12 is equal with the length L2 of connection sheet II 14, meets the replacement for being convenient for connection sheet；Adjustment
The length L1=m4+R mm of II C of I B of frame and adjustment frame, wherein R is the radius of I 12 rear end circular arc of connection sheet, the setting of L1 size
It can guarantee that hook I 9, hook II 10, hook III 23 and hook IV 28 are on straight line perpendicular to the ground, consequently facilitating
It is fixed on the rack, can be by changing the connection sheet I 12 of I B of adjustment frame and II C of adjustment frame and the length of connection sheet II 14 with this
Degree, needed for realizing that it drives grain conductor 1 to occur that it in the horizontal direction in the position of graduation mark II 6 and graduation mark III 7 respectively
The deformation wanted.
As shown in Fig. 2, the general grain conductor of the reconfigurable, which is characterized in that the grain conductor 1 is by upper pipe sleeve
34, conical corrugated pipe 35 and lower pipe sleeve 36 composition, the cone angle alpha of conical corrugated pipe 35 are 2.5-5 degree, the diameter D2 of lower pipe sleeve 36
It is 418-458mm for 30-50mm, diameter D1=(D2+2mtan α) mm of upper pipe sleeve 34,1 overall length m of grain conductor, upper pipe sleeve 34
Height h1 is 30mm, and the height h2 of lower pipe sleeve 36 is 30mm, and the material of grain conductor 1 can be for made of zinc-plated or not zinc-plated thin steel strip
Metal bellows；Graduation mark I 5, graduation mark II 6 and graduation mark III 7, graduation mark are equipped with behind conical corrugated pipe 35 from top to bottom
I 5 with the spacing m of upper 34 lower end of pipe sleeve1For 206mm, the spacing m of graduation mark I 5 and graduation mark II 62For 80mm, graduation mark II 6 with
The spacing m of graduation mark III 73For 42mm, graduation mark position is selected as its Deformation Curvature larger part.
As shown in Figure 7 to 9, the general grain conductor of the reconfigurable, which is characterized in that I 2 upper end of connection strap
Equipped with hole Ⅹ 32, I 2 lower end of connection strap is equipped with hole Ⅺ 33, the pitch of holes L5=m in hole Ⅹ 32 and hole Ⅺ 333/cosαmm；Connection strap
II 3 upper ends are equipped with hole VIII 30, and II 3 lower end of connection strap is equipped with hole Ⅸ 31, the pitch of holes L4=m in hole VIII 30 and hole Ⅸ 312/cosα
mm；4 upper end of fixed strip is equipped with hook IV 28, and 4 lower end of fixed strip is equipped with hole VII 29, IV 28 lower ends of hook and VII 29 center spacing of hole
L3 is=(h1+m1)/cosαmm。
As shown in Figure 10, the general grain conductor of the reconfigurable, which is characterized in that the shape tune of the grain conductor 1
Whole, only need to change the length of connection sheet I 12 and connection sheet II 14 in II C of I B of adjustment frame and adjustment frame can complete.
Claims (6)
1. a kind of general grain conductor of reconfigurable, it is characterised in that by fixed frame (A), adjustment frame I (B), adjustment frame II (C),
Grain conductor (1), connection strap I (2), connection strap II (3) and fixed strip (4) composition, fixed frame (A), adjustment frame I (B) and adjustment frame
II (C) is placed on the conical corrugated pipe (35) in grain conductor (1) from top to bottom, and wherein the fixed frame rear end (A) is located at graduation mark I (5)
Place；The rear end (B) of adjustment frame I is located at graduation mark II (6)；The rear end (C) of adjustment frame II is located at graduation mark III (7)；Fixed strip
(4), connection strap II (3) and connection strap I (2) arrange from top to bottom, and fixed strip (4) lower end, connection strap II (3) lower end and connection
The positive back of conical corrugated pipe (35) in grain conductor (1) is fixed in front of item I (2) lower end；The hook IV (28) of fixed strip (4)
It is hung on upper pipe sleeve (34) rear end of grain conductor (1)；The hole VIII (30) of the hole VII (29) of fixed strip (4) and connection strap II (3) and solid
Determine to be flexibly connected in the middle part of the rear bar of frame (A)；The hole Ⅸ (31) of connection strap II (3) and the hole Ⅹ (32) of connection strap I (2) and adjustment frame
The middle part of bolt I (17) is flexibly connected in I (B)；The hole Ⅺ (33) of connection strap I (2) and the middle part of bolt in adjustment frame II (C) are living
Dynamic connection.
2. the general grain conductor of reconfigurable according to claim 1, which is characterized in that the fixed frame (A) is by fixing
Ring (8), I (9) of hook and II (10) of hook composition, wherein fixed ring (8) is the pentagon of open front；I (9) of hook are fixed in solid
Determine open right end before ring (8), II (10) of hook are fixed in open left end before fixed ring (8), II (10) of I (9) of hook and hook
The spacing of front end to fixed ring (8) rear end is m4, m4Size meet the graduation mark I that fixed ring (8) can be placed outside grain conductor (1)
(5) at.
3. the general grain conductor of reconfigurable according to claim 1, which is characterized in that the adjustment frame I (B) and adjustment
The structure of frame II (C) is identical, by nut I (11), connection sheet I (12), connection sheet II (14), bolt I (17), fixing card
III (23) and connector (25) composition, wherein connector (25) is in U-shape；Connection sheet I (12) rear end is equipped with hole I (13), connection sheet
II (14) rear end is equipped with hole II (15)；Connection sheet I (12) front end and connector (25) left side are affixed；Connection sheet II (14) front end with
It is affixed on the right of connector (25)；The hole II (15) in hole I (13) and connection sheet II (14) of the bolt I (17) through connection sheet I (12), with
Nut I (11) is threadedly coupled；III (23) of hook are fixed in connector (25) front end center；Connection sheet I (12) and connection sheet II
(14) length L2 is equal；The length L1=m of adjustment frame I (B) and adjustment frame II (C)4+ R mm, wherein R is connection sheet I (12)
The radius of rear end circular arc.
4. the general grain conductor of reconfigurable according to claim 1, which is characterized in that the grain conductor (1) is by upper tube
The cone angle alpha for covering (34), conical corrugated pipe (35) and lower pipe sleeve (36) composition conical corrugated pipe (35) is 2.5-5 degree, lower pipe sleeve
(36) diameter D2 is 30-50mm, and diameter D1=(D2+2mtan α) mm of upper pipe sleeve (34), grain conductor (1) overall length m are 418-
458mm, the height h1 of upper pipe sleeve (34) are 30mm, and the height h2 of lower pipe sleeve (36) is 30mm；Behind conical corrugated pipe (35)
It is equipped with graduation mark I (5), graduation mark II (6) and graduation mark III (7), graduation mark I (5) and upper pipe sleeve (34) lower end from top to bottom
Spacing m1For 206mm, the spacing m of graduation mark I (5) and graduation mark II (6)2For 80mm, graduation mark II (6) and graduation mark III (7)
Spacing m3For 42mm.
5. the general grain conductor of reconfigurable according to claim 1, which is characterized in that described connection strap I (2) upper end is set
There is hole Ⅹ (32), connection strap I (2) lower end is equipped with hole Ⅺ (33), the pitch of holes L5=m in hole Ⅹ (32) and hole Ⅺ (33)3/cosα
mm；Connection strap II (3) upper end is equipped with hole VIII (30), and connection strap II (3) lower end is equipped with hole Ⅸ (31), hole VIII (30) and hole Ⅸ (31)
Pitch of holes L4=m2/cosαmm；Fixed strip (4) upper end is equipped with IV (28) of hook, and fixed strip (4) lower end is equipped with hole VII (29),
It links up with IV (28) lower end and hole VII (29) center spacing L3 is=(h1+m1)/cosαmm。
6. the general grain conductor of reconfigurable according to claim 1, which is characterized in that the shape tune of the grain conductor (1)
Whole, only need to change the length of connection sheet I (12) and connection sheet II (14) in adjustment frame I (B) and adjustment frame II (C) can complete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811358665.4A CN109379939B (en) | 2018-11-15 | 2018-11-15 | Shape-adjustable general seed guiding pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811358665.4A CN109379939B (en) | 2018-11-15 | 2018-11-15 | Shape-adjustable general seed guiding pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109379939A true CN109379939A (en) | 2019-02-26 |
| CN109379939B CN109379939B (en) | 2021-05-28 |
Family
ID=65428697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811358665.4A Expired - Fee Related CN109379939B (en) | 2018-11-15 | 2018-11-15 | Shape-adjustable general seed guiding pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109379939B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1117200A (en) * | 1979-04-23 | 1982-01-26 | Olson, Kathleen R. | Method and apparatus for counting particles of particulate material |
| DE4026283A1 (en) * | 1989-08-21 | 1991-02-28 | Wagner Ulrich | Specified ratio liq. mixing in adjustable vol. container - controlled by part stream of second liq. |
| JPH07170829A (en) * | 1994-12-22 | 1995-07-11 | Yanmar Agricult Equip Co Ltd | Fertilizer application and seeding device |
| CN201048469Y (en) * | 2007-06-11 | 2008-04-23 | 湖南农业大学 | Precision seeding detecting sensor |
| CN101513157A (en) * | 2009-03-28 | 2009-08-26 | 沈阿庆 | Seeder |
| CN203761805U (en) * | 2014-03-19 | 2014-08-13 | 山西省农业科学院经济作物研究所 | Seeding machine |
| CN204968457U (en) * | 2015-09-29 | 2016-01-20 | 四川农业大学 | Disseminator with adjustable |
-
2018
- 2018-11-15 CN CN201811358665.4A patent/CN109379939B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1117200A (en) * | 1979-04-23 | 1982-01-26 | Olson, Kathleen R. | Method and apparatus for counting particles of particulate material |
| DE4026283A1 (en) * | 1989-08-21 | 1991-02-28 | Wagner Ulrich | Specified ratio liq. mixing in adjustable vol. container - controlled by part stream of second liq. |
| JPH07170829A (en) * | 1994-12-22 | 1995-07-11 | Yanmar Agricult Equip Co Ltd | Fertilizer application and seeding device |
| CN201048469Y (en) * | 2007-06-11 | 2008-04-23 | 湖南农业大学 | Precision seeding detecting sensor |
| CN101513157A (en) * | 2009-03-28 | 2009-08-26 | 沈阿庆 | Seeder |
| CN203761805U (en) * | 2014-03-19 | 2014-08-13 | 山西省农业科学院经济作物研究所 | Seeding machine |
| CN204968457U (en) * | 2015-09-29 | 2016-01-20 | 四川农业大学 | Disseminator with adjustable |
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| Publication number | Publication date |
|---|---|
| CN109379939B (en) | 2021-05-28 |
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Granted publication date: 20210528 Termination date: 20211115 |