CN206226981U - The adjustable combination socket bore formula feed mechanism for seed of one kind amount of broadcasting - Google Patents
The adjustable combination socket bore formula feed mechanism for seed of one kind amount of broadcasting Download PDFInfo
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- CN206226981U CN206226981U CN201621315795.6U CN201621315795U CN206226981U CN 206226981 U CN206226981 U CN 206226981U CN 201621315795 U CN201621315795 U CN 201621315795U CN 206226981 U CN206226981 U CN 206226981U
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- seeding
- seed
- external disk
- inner disc
- hole
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Abstract
The utility model discloses the adjustable combination socket bore formula feed mechanism for seed of one kind amount of broadcasting, including back casing, seeding external disk, seeding inner disc and the outer groove-wheel for carrying procapsid into kind of mouth, being provided with mouth of charging seed, and square shaft.Due to seeding external disk by the second bolt connection on seeding inner disc, when the regulation amount of broadcasting, four the second bolts need to only be unscrewed, rotate at seeding external disk to required scale, all combination-type hole sizes can be simultaneously adjusted, it is easy to operate without changing seeding external disk and seeding inner disc or adjusting the size of each type hole one by one, reliable operation, is capable of achieving the step-less adjustment of the amount of broadcasting；By the grain weight in the controllable seed feeding chamber of outer groove-wheel, it is filled with during combination-type hole because of broadcast leakage caused by seed interphase interaction with reducing seed；When elliposoidal seed is sowed, the state that seed is filled with interior nest dosing hole can be improved, and seed is in interior nest dosing hole is with seeding inner disc and seeding external disk rotation process, and rolling friction is only existed between back casing, reduces seedling-damaging rate.
Description
Technical field
The utility model belongs to agricultural seeder machinery field, and in particular to the adjustable combination socket bore formula seeding of one kind amount of broadcasting
Device.
Background technology
Precise sowing is the inexorable trend of modern plant production development, with province's kind, saving of labor, improves crop yield and quality etc.
Advantage.Realize that the principal element of precise sowing depends on the performance of feed mechanism for seed.
Precision seeder can be divided into mechanical and Pneumatic type by its operation principle.At present, it is widely used on external precision seeder
Pneumatic seeding apparatus, Pneumatic seeding apparatus strong applicability, versatility is good, less demanding to seed appearance and size, but it is to air chamber
Seal request is high, complex structure, expensive, and easy to wear, use and maintenance inconvenience, is not suitable for China's small area farming mould
Formula.Be present, seedling-damaging rate strict to seed sizes requirement, but its simple structure in mechanical seed sowing device, low cost, use
The advantages of easy to maintenance and reliable operation, certain proportion is still occupied in actual applications.
Due to the difference of the natural conditions, kind and seed quality of different regions, the requirement to its application rate there is also compared with
Big difference.Wherein, traditional filling seed inside formula feed mechanism for seed in the regulation amount of broadcasting, using change discharge plate or one by one adjust type hole chi
It is very little, now complex operation, adjustment cannot be ensured after each type hole size it is consistent, and adjustable range is small.
The content of the invention
Deficiency of the purpose of this utility model aiming at above-mentioned technology, there is provided the adjustable combination socket bore formula row of one kind amount of broadcasting
Device is planted, can be under conditions of being changed without seeding inner disc and seeding external disk or need not one by one adjust type hole size, only by adjusting
Save seeding external disk to change the size of all combination-type holes, so as to realize the step-less adjustment of the amount of broadcasting, and also seed can be improved
Kind of a state is filled, seedling-damaging rate is reduced.
To achieve the above object, designed by the utility model the adjustable combination socket bore formula feed mechanism for seed of the amount of broadcasting, including carry
Back casing, seeding external disk and the seeding inner disc for enter the procapsid of kind of mouth, being provided with mouth of charging seed, and square shaft, the procapsid and
Back casing pairing is set and is fixedly connected by the first bolt, and the seeding external disk and seeding inner disc are respectively positioned on by procapsid with after
In the space that housing is constituted；First bearing seat on the procapsid and clutch shaft bearing interference fit, on the back casing the
Three bearing blocks and 3rd bearing interference fit, one end of the square shaft is connected after passing through clutch shaft bearing with drive sprocket, described
The other end of square shaft sequentially pass through after the first centre bore, the square through hole of seeding inner disc and the 3rd bearing of seeding external disk with it is outer
Sprocket wheel is connected；
The middle part of the seeding external disk is circumferentially provided with several arcuate sockets, and seeding inner disc middle part is provided with and arc
Several counterbores that shape hole is engaged, the seeding external disk is fixedly connected with seeding inner disc by the second bolt；
Several uniform outer lug boss are circumferentially vertically provided with the edge of the seeding external disk, each outer lug boss
One end level is provided with the outer lug for stretching out；Several and evagination are circumferentially vertically provided with the edge of the seeding inner disc
The inner convex platform that platform is engaged, is provided with an outer lug in the internal clearance between the two neighboring inner convex platform；Two neighboring evagination
The outer lug in an outer lug boss in external series gap, the two neighboring outer lug boss between platform is corresponding with another outer lug boss interior
Gap between boss and procapsid form combination-type hole, and the combination-type hole includes horizontal interior nest dosing hole and vertical fills
Hole is planted, the circumferential size of the seed-filling hole is gradually reduced with seeding external disk radially outward direction；
Second bearing seat on the procapsid and second bearing interference fit, one end of multi-diameter shaft through outer groove-wheel the
Two centre bores, the other end of multi-diameter shaft passes through second bearing to be connected with driven sprocket up to the other end of multi-diameter shaft, and through
The straight pin accumbency of multi-diameter shaft one end is in the second centre bore, until the two ends of straight pin are inserted into the groove at the second centre bore two ends
It is interior, and several type holes are provided with the outer peripheral edge of the outer groove-wheel.
Further, it is labeled with scale in any outer lug boss by the center of circle of the center of seeding external disk in the seeding external disk
Line.
Further, the thickness of the outer lug is equal with the thickness of the inner convex platform, the thickness of the outer groove-wheel type hole
With the consistency of thickness of the seed-filling hole.
Further, the arcuate socket in the seeding external disk has four, accordingly, counterbore on the seeding inner disc
Number is also four, and the central angle corresponding to each arcuate socket is equal and is 18 °~22 °.
Further, the procapsid inner surface is provided with block and seeds protecting plate, and the block is provided with to be cleaned with water outside seeding
The block of disk plants clearly hairbrush, and one end of the seeds protecting plate is provided with to be cleaned the seeds protecting plate of seeding external disk with water and plant hairbrush, the shield kind clearly
The other end of plate is provided with to be cleaned the outer groove-wheel of the outer groove-wheel with water and plants hairbrush clearly.
Further, the inner convex platform surface chamfer 1 of each interior nest dosing hole is formed:10.
Further, it is provided with the bearing being connected with seeder frame on the back casing.
Compared with prior art, the utility model has advantages below：
1st, because seeding external disk is bolted on seeding inner disc, when the regulation amount of broadcasting, four bolts need to only be twisted
Pine, rotates at seeding external disk to required scale, you can while adjust the size of all combination-type holes, without change seeding external disk and
Seeding inner disc adjusts the size of each type hole one by one, and easy to operate, reliable operation is capable of achieving the step-less adjustment of the amount of broadcasting；
2nd, by the grain weight in the controllable seed feeding chamber of outer groove-wheel, it is filled with during combination-type hole because of seed with reducing seed
Broadcast leakage caused by interphase interaction；
3rd, when elliposoidal seed is sowed, because outer groove-wheel type hole thickness is with seed-filling hole, interior nest dosing hole thickness is equal and fills
The circumferential size for planting hole is gradually reduced with seeding external disk radially outward direction, and limit seed fills kind of a form so that seed more inclines
To in the roll mode into interior nest dosing hole that lies low, improve the state that seed is filled with interior nest dosing hole, and seed is fixed in interior nest
During metering-orifice is with seeding inner disc and seeding external disk rotation process, rolling friction is only existed between back casing, reduce seedling-damaging rate.
Brief description of the drawings
Fig. 1 is the adjustable combination socket bore formula feed mechanism for seed structural decomposition diagram of the utility model amount of broadcasting；
Fig. 2 is procapsid inner surface structure schematic diagram in Fig. 1；
Fig. 3 is procapsid outer surface structure schematic diagram in Fig. 1；
Fig. 4 is back casing structural representation in Fig. 1；
Fig. 5 is seeding external disk structural representation in Fig. 1；
Fig. 6 is seeding inner disc structural representation in Fig. 1；
Fig. 7 is outer groove-wheel structural representation in Fig. 1；
Fig. 8 is the left side schematic cross-sectional view of Fig. 1；
Fig. 9 is the backsight schematic cross-sectional view of Fig. 1；
Figure 10 is the vertical view schematic cross-sectional view of Fig. 1.
Each part numbers are as follows in figure：Seeding inner disc 1, seeding external disk 2, back casing 3, seeds protecting plate plant clearly hairbrush 4, the 3rd spiral shell
Bolt 5, type hole 7, pad 6, outer groove-wheel are planted clearly hairbrush 8, block and plant hairbrush 9, screw 10, sunk screw 11, outer lug 12, exterior chain clearly
Wheel 13, nut 14, internal clearance 15,3rd bearing end cap 16, the second bolt 17, the first bolt 18, external series gap 19, combination-type hole
20th, procapsid 21, gap 22, interior nest dosing hole 23, square shaft 24, clutch shaft bearing end cap 25,3rd bearing 26, straight pin 27,
Outer groove-wheel 28, second bearing 29, seed-filling hole 30, driven sprocket 31, key 32, multi-diameter shaft 33, second bearing end cap 34, convex table top
35th, drive sprocket 36, clutch shaft bearing 37, block 38, first through hole 39, seeds protecting plate 40, first bearing seat 41, enter kind of mouth 42,
Two bearing bracket 43, mouth 44 of charging seed, bearing 45, the 47, second through hole 48 of the second centre bore 46,3rd bearing seat, arcuate socket 49, evagination
Platform 50, the first centre bore 51, counterbore 52, inner convex platform 53, square through hole 54, groove 55.
Specific embodiment
The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
The adjustable combination socket bore formula feed mechanism for seed of the amount of broadcasting as shown in Figure 1, including carry procapsid 21 into kind of mouth 42, be provided with
Charge seed back casing 3, seeding external disk 2, seeding inner disc 1 and the outer groove-wheel 28 of mouth 44, and square shaft 24.With reference to Fig. 2, Fig. 3, Fig. 4
Shown, the edge of procapsid 21 is circumferentially provided with several first through hole 39, and the edge of back casing 3 is provided with and first through hole along round week
39 the second through holes 48 being engaged, procapsid 21 and the pairing of back casing 3 are set and are fixedly connected by the first bolt 18；With reference to figure
5th, shown in Fig. 6, the middle part of seeding external disk 2 is circumferentially provided with several arcuate sockets 49, the middle part of seeding inner disc 1 be provided with
Several counterbores 52 that arcuate socket 49 is engaged, the equal position after being fixedly connected by the second bolt 17 with seeding inner disc 1 of seeding external disk 2
In in the space being made up of procapsid 21 and back casing 3；In addition, the arcuate socket 49 in seeding external disk 2 has four, and accordingly, row
The number of the counterbore 52 on kind of inner disc 1 is also four, and the central angle corresponding to each arcuate socket 49 is equal and is 18 °~22 °
(preferably 20 °) so that seeding external disk 2 can be circumferentially rotated around seeding inner disc 1.
As shown in Figure 8,9, 10, the first bearing seat 41 and second bearing seat 43 on procapsid 21 respectively with clutch shaft bearing 37
With second bearing 29 (i.e. the outer ring interference fit of first bearing seat 41 and clutch shaft bearing 37, second bearing seat 43 and second bearing
29 outer ring interference fit) outer ring interference fit, 3rd bearing seat 47 and the outer ring interference of 3rd bearing 26 on back casing 3
Coordinate；
One end of square shaft 24 is connected after passing through clutch shaft bearing 37 with drive sprocket 36, and drive sprocket 36 and square shaft 24
Between be located by connecting by key 32, the other end of square shaft 24 sequentially passes through the first centre bore 51, the seeding inner disc of seeding external disk 2
Be connected with outer sprocket wheel 13 by nut 14 after 1 square through hole 54 and 3rd bearing 26, and outer sprocket wheel 13 and the end face of back casing 3 it
Between be lined with pad 6；Also, 3rd bearing end cap 16 is fixed on 3rd bearing seat 47, clutch shaft bearing end cap by sunk screw 11
25 are fixed in first bearing seat 41 by sunk screw 11；
With reference to shown in Fig. 7, one end of multi-diameter shaft 33 passes through the second centre bore 46 of outer groove-wheel 28, second bearing end cap 34 to lead to
Cross sunk screw 11 to be fixed in second bearing seat 43, the other end of multi-diameter shaft 33 passes through second bearing 29 up to multi-diameter shaft 33
The other end is connected with driven sprocket 31, and is located by connecting by key 32 between driven sprocket 31 and multi-diameter shaft 33, in addition, through
The accumbency of straight pin 27 of the one end of multi-diameter shaft 33 is in the second centre bore 46, until the two ends of straight pin 27 are inserted into the second centre bore 46
In the groove 55 at two ends so that outer groove-wheel 28 is circumferentially rotated by straight pin 27 with multi-diameter shaft 33, and outer groove-wheel 28 outer peripheral edge
On be provided with several type holes 7；
Several are circumferentially vertically provided with again as shown in Fig. 5, Fig. 6 and Fig. 8, on the edge of seeding external disk 2 uniform outer
Boss 50, and the one end level of each outer lug boss 50 is provided with the outer lug 12 for stretching out；Along circle on the edge of seeding inner disc 1
Zhou Chuizhi is provided with the inner convex platform 53 that several are engaged with outer lug boss 50, is set in the internal clearance 15 between two neighboring inner convex platform 53
There is an outer lug 12, the thickness of outer lug 12 is equal with the thickness of inner convex platform 53；Between each outer lug 12 correspondence is in
In gap 15, the evagination in an outer lug boss 50 in the external series gap 19 of two neighboring outer lug boss 50, the two neighboring outer lug boss 50
Gap 22 and procapsid 21 between the inner convex platform 53 corresponding with another outer lug boss 50 of ear 12 form combination-type hole 20, the combination
Type hole 20 includes horizontal interior nest dosing hole 23 and vertical seed-filling hole 30, forms the convex table top 35 of each interior nest dosing hole 23
Chamfering 1:10, it is easy to smoothly charge seed, and the consistency of thickness of the thickness of the type hole 7 of outer groove-wheel 28 and seed-filling hole 30, and outer groove-wheel 28 is every
Individual type hole 7 can only accommodate a seed；Due to outer lug 12 thickness (in axial direction) and inner convex platform 53 thickness (vertically
Direction) it is equal so that interior nest dosing hole 23 is also consistent with the thickness of seed-filling hole 30, and seed-filling hole 30 circumferential size with seeding outside
Radially outward (outside along radial direction) direction is gradually reduced disk 2；Also, in seeding external disk 2 with the center of seeding external disk 2 be circle
The heart is labeled with graduation mark (being not drawn into figure) in any outer lug boss 50, to facilitate the interior nest dosing hole 23 of combination-type hole 20 circumferential
The regulation of size (along the circumferential direction).
Again as shown in Fig. 2, Fig. 8, the inner surface of procapsid 21 is provided with block 38 and seeds protecting plate 40, and block 38 passes through screw
10 are provided with and clean the block of seeding external disk 2 with water and plant hairbrush 9 clearly, and one end card of seeds protecting plate 40 has the seeds protecting plate for cleaning seeding external disk 2 with water
Clear to plant hairbrush 4, the other end of seeds protecting plate 40 is provided with the water jacket for cleaning outer groove-wheel 28 with water by the 3rd bolt 5, pad 6 and nut 14
Wheel is clear to plant hairbrush 8；Also, the bearing 45 being connected with seeder frame is additionally provided with back casing 3.
When outer sprocket wheel 13 drives square shaft 24 to rotate, seeding external disk 2 starts to rotate together with seeding inner disc 1, while passing through
Key 32 drives drive sprocket 36 to rotate, then drives driven sprocket 31 to rotate through Chain conveyer, so that multi-diameter shaft 33 starts to rotate, due to
Straight pin 27 starts to rotate through multi-diameter shaft 33, therefore outer groove-wheel 28.
Seed rotates, on by seeds protecting plate 40 from the type hole 7 for entering the entrance outer groove-wheel 28 of kind of mouth 42 with outer groove-wheel 28
Seed unnecessary in type hole 7 is brushed out type hole 7 when outer groove-wheel plants clearly hairbrush 8, drops back into Chong Zhong areas, and the seed in type hole 7 is with water jacket
Wheel 28 is rotated into Hu Zhong areas, by the way that behind Hu Zhong areas, it is combined with what seeding inner disc 1 was formed that seeds fall enters seeding external disk 2
In hole 20, then rotated by gravity seed cleaning with seeding external disk 2 and seeding inner disc 1, subsequently enter Hu Zhong areas, turn over certain angle laggard
Enter area of charging seed, seed is discharged by mouth 44 of charging seed by gravity and centrifugal force, complete process of charging seed.
Because seeding external disk 2 is connected on seeding inner disc 1 by the second bolt 17, when the regulation amount of broadcasting, only need to be by four
Second bolt 17 is unscrewed, and rotates at seeding external disk 2 to required scale, then tighten the second bolt 17, you can while adjusting all groups
The size in mould assembly hole 20, without changing seeding external disk 2 and seeding inner disc 1 or adjusting the size of each type hole one by one, operation letter
Just, reliable operation, is capable of achieving the step-less adjustment of the amount of broadcasting.
In addition, can control the grain weight in seed feeding chamber by outer groove-wheel 28, it is filled with during combination-type hole with reducing seed
Because of broadcast leakage caused by seed interphase interaction；Secondly, when sow elliposoidal seed when, because the thickness of 28 type hole of outer groove-wheel 7 with fill
Kind of hole 30, the interior thickness of nest dosing hole 23 are equal and circumferential size of seed-filling hole 30 gradually subtracts with the radially outward direction of seeding external disk 2
Small, limit seed fills kind of a form so that seed is more likely to the roll mode into interior nest dosing hole that lies low, and improves seed and fills
Enter the state of interior nest dosing hole, and seed is in interior nest dosing hole is with seeding inner disc and seeding external disk rotation process, with back casing
Between only exist rolling friction, reduce seedling-damaging rate.
Claims (7)
1. the adjustable combination socket bore formula feed mechanism for seed of one kind amount of broadcasting, including carry procapsid (21) into kind of a mouth (42), be provided with and charge seed
The back casing (3) of mouthful (44), seeding external disk (2) and seeding inner disc (1), and square shaft (24), the procapsid (21) and after
Housing (3) pairing is set and is fixedly connected by the first bolt (18), and the seeding external disk (2) and seeding inner disc (1) are respectively positioned on
In the space be made up of procapsid (21) and back casing (3)；First bearing seat (41) and first axle on the procapsid (21)
(37) interference fit is held, 3rd bearing seat (47) and 3rd bearing (26) interference fit on the back casing (3) are described square
One end of axle (24) is connected with drive sprocket (36) afterwards through clutch shaft bearing (37), and the other end of the square shaft (24) is worn successively
Cross first centre bore (51) of seeding external disk (2), the square through hole (54) of seeding inner disc (1) and 3rd bearing (26) afterwards and exterior chain
Wheel (13) is connected；It is characterized in that：
The middle part of the seeding external disk (2) is circumferentially provided with several arcuate sockets (49), and seeding inner disc (1) middle part sets
There are several counterbores (52) being engaged with arcuate socket (49), the seeding external disk (2) is with seeding inner disc (1) by the second bolt
(17) it is fixedly connected；
Several uniform outer lug boss (50), each described evagination are circumferentially vertically provided with the edge of the seeding external disk (2)
The one end level of platform (50) is provided with the outer lug (12) for stretching out；It is circumferentially vertical on the edge of the seeding inner disc (1)
It is provided with several inner convex platforms (53) being engaged with outer lug boss (50), the internal clearance between the two neighboring inner convex platform (53)
(15) an outer lug (12) is provided with；External series gap (19), the two neighboring outer lug boss between two neighboring outer lug boss (50)
(50) between the inner convex platform (53) corresponding with another outer lug boss (50) of the outer lug (12) on an outer lug boss (50) in
Gap (22) and procapsid (21) form combination-type hole (20), and the combination-type hole (20) includes horizontal interior nest dosing hole (23)
With vertical seed-filling hole (30), the circumferential size of the seed-filling hole (30) is gradually reduced with seeding external disk (2) radially outward direction；
Second bearing seat (43) and second bearing (29) interference fit on the procapsid (21), one end of multi-diameter shaft (33) is worn
Second centre bore (46) of outer groove-wheel (28) is crossed, the other end of multi-diameter shaft (33) is through second bearing (29) until multi-diameter shaft (33)
The other end be connected with driven sprocket (31), and through multi-diameter shaft (33) one end straight pin (27) accumbency in the second centre bore
(46), until the two ends of straight pin (27) are inserted into the groove (55) at the second centre bore (46) two ends, and the outer groove-wheel
(28) several type holes (7) are provided with outer peripheral edge.
2. the amount of broadcasting is adjustable according to claim 1 combines socket bore formula feed mechanism for seed, it is characterised in that：The seeding external disk (2)
On be labeled with graduation mark in any outer lug boss (50) by the center of circle of the center of seeding external disk (2).
3. the amount of broadcasting according to claim 1 or claim 2 is adjustable combines socket bore formula feed mechanism for seed, it is characterised in that：The outer lug
(12) thickness is equal with the thickness of the inner convex platform (53), the thickness and the seed-filling hole of the outer groove-wheel (28) type hole (7)
(30) consistency of thickness.
4. the amount of broadcasting according to claim 1 or claim 2 is adjustable combines socket bore formula feed mechanism for seed, it is characterised in that：The seeding external disk
(2) arcuate socket (49) on has four, and accordingly, the number of the counterbore (52) on the seeding inner disc (1) is also four, each
Central angle corresponding to arcuate socket (49) is equal and is 18 °~22 °.
5. the amount of broadcasting according to claim 1 or claim 2 is adjustable combines socket bore formula feed mechanism for seed, it is characterised in that：The procapsid
(21) inner surface is provided with block (38) and seeds protecting plate (40), and the block (38) is provided with the block for cleaning seeding external disk (2) with water
Clear to plant hairbrush (9), one end of the seeds protecting plate (40) is provided with to be cleaned the seeds protecting plate of seeding external disk (2) with water and plants hairbrush (4) clearly, described
The other end of seeds protecting plate (40) is provided with to be cleaned the outer groove-wheel of the outer groove-wheel (28) with water and plants hairbrush (8) clearly.
6. the amount of broadcasting according to claim 1 or claim 2 is adjustable combines socket bore formula feed mechanism for seed, it is characterised in that：Formed described in each
Convex table top (35) chamfering 1 of interior nest dosing hole (23):10.
7. the amount of broadcasting according to claim 1 or claim 2 is adjustable combines socket bore formula feed mechanism for seed, it is characterised in that：The back casing (3)
On be provided with the bearing (45) being connected with seeder frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621315795.6U CN206226981U (en) | 2016-12-02 | 2016-12-02 | The adjustable combination socket bore formula feed mechanism for seed of one kind amount of broadcasting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621315795.6U CN206226981U (en) | 2016-12-02 | 2016-12-02 | The adjustable combination socket bore formula feed mechanism for seed of one kind amount of broadcasting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206226981U true CN206226981U (en) | 2017-06-09 |
Family
ID=58977593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621315795.6U Expired - Fee Related CN206226981U (en) | 2016-12-02 | 2016-12-02 | The adjustable combination socket bore formula feed mechanism for seed of one kind amount of broadcasting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206226981U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106612785A (en) * | 2016-12-02 | 2017-05-10 | 华中农业大学 | Combined nest hole type seed sowing device capable of adjusting sowing amount |
-
2016
- 2016-12-02 CN CN201621315795.6U patent/CN206226981U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106612785A (en) * | 2016-12-02 | 2017-05-10 | 华中农业大学 | Combined nest hole type seed sowing device capable of adjusting sowing amount |
| CN106612785B (en) * | 2016-12-02 | 2022-07-29 | 华中农业大学 | Combined hole type seed sowing device with adjustable sowing quantity |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170609 Termination date: 20181202 |