CN108702902A - Wheat Pneumatic Precise Seeder - Google Patents
Wheat Pneumatic Precise Seeder Download PDFInfo
- Publication number
- CN108702902A CN108702902A CN201810404700.5A CN201810404700A CN108702902A CN 108702902 A CN108702902 A CN 108702902A CN 201810404700 A CN201810404700 A CN 201810404700A CN 108702902 A CN108702902 A CN 108702902A
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- China
- Prior art keywords
- aspiration
- wheat
- rack
- seed
- negative pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C7/00—Sowing
- A01C7/04—Single-grain seeders with or without suction devices
- A01C7/042—Single-grain seeders with or without suction devices using pneumatic means
- A01C7/044—Pneumatic seed wheels
- A01C7/046—Pneumatic seed wheels with perforated seeding discs
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C7/00—Sowing
- A01C7/08—Broadcast seeders; Seeders depositing seeds in rows
- A01C7/081—Seeders depositing seeds in rows using pneumatic means
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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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- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Sowing (AREA)
Abstract
The present invention provides a kind of Wheat Pneumatic Precise Seeders, including rack, and rotation is set to the air-suction seed metering device in rack, the plants case being fixed in rack, and is fixed on the rack, and is undertaken in the plough that air-suction seed metering device goes out kind of mouth.Wherein, air-suction seed metering device includes the shaft formed by two semiaxis, and each semiaxis lateral ends rotation is set in rack.Further include the aspiration unit between being fixed on two-semiaxle inner opposite end, aspiration unit includes the two pieces of aspiration disks formed because of fastening by aspiration chamber, and aspiration chamber passes through the negative pressure cavity being set at least one semiaxis and is connected with external negative pressure device.The aspiration slot for accommodating seed is provided on the excircle of ring aspiration unit, which is connected to through the gap between two aspiration disks with aspiration chamber.The Wheat Pneumatic Precise Seeder of the present invention, the air pressure of aspiration slot everywhere is uniform, and sowing is more uniform, has preferable using effect.
Description
Technical field
The present invention relates to implanted device technical field more particularly to a kind of Wheat Pneumatic Precise Seeders.
Background technology
The feed mechanism for seed of traditional seeder is mostly outer groove wheel structure, arteries and veins simple in structure, at low cost but due to its seeding
Dynamic property, adversely affects seeding uniformity, stability, influences the yield of crops.And air-suction seeding unit belongs to accurate row
Kind of its equipment, sowing performance are far superior to mechanical seed sowing device, it, which has, saves kind, injuring-free seed, versatile, and sowing is
The high advantage of even property.
The main body of existing air-suction seeding unit device is pipe made of two layers of nesting, and wherein inner tube connects with negative pressure device
It is logical, and as the main shaft being erected in sowing rack.It is equipped with venthole on inner pipe so that negative pressure is formed between inner tube and outer tube
State.And outer tube is formed by multiple pipeline sections arranged side by side, between each pipeline section formed accommodate seed gap, by inner and outer tubes it
Between negative pressure state so that seed is adsorbed in gap.
The structure of two layers of pipe is to make to form negative pressure state between ectonexine pipe by the way that venthole is arranged on inner pipe,
It inevitably causes air pressure everywhere uneven, influences the uniformity of seeding.And this kind of structure is also complex, to installation
It also makes troubles with repair.Meanwhile inner tube work long hours after have inevitable bending, which can make the feed mechanism for seed
Maintenance cost is excessively high, influences the service life of feed mechanism for seed, increases use cost.
Invention content
In view of this, the present invention is directed to propose a kind of Wheat Pneumatic Precise Seeder, can have more excellent row
Kind effect and using effect.
In order to achieve the above objectives, the technical proposal of the invention is realized in this way：
A kind of Wheat Pneumatic Precise Seeder, including rack, rotation are set to the air-suction seed metering device in rack, are set to rack
On plants case, negative pressure device, and be fixed on the rack, and accept the plough that the air-suction seed metering device goes out kind of mouth；
The air-suction seed metering device includes：
Shaft, including one end rotation are set to two semiaxis in the rack, in the inside of at least one two semiaxis
It is formed with the negative pressure cavity being connected to the negative pressure device；
Aspiration unit is fixed between the other end of two semiaxis, and the aspiration unit includes being formed with because of fastening
Two pieces of aspiration disks of aspiration chamber；The aspiration chamber is connected to the negative pressure cavity；The peripheral surface of aspiration disk described in ring two is formed with gas
Bothrium, the aspiration slot and the aspiration chamber pass through the gap area between the two aspiration disks；
Seed scraping device is fixedly arranged in the rack, and the seed scraping device, which has to probe into the gap, scrapes kind of a piece；
The plants case includes:
Kind storehouse；
Discharge plate is connected to described kind of storehouse, and extends to the lower section of the air-suction seed metering device；
Kind position control panel is configured to that the seed flow velocity for entering the discharge plate by described kind of storehouse is adjusted.
Further, the two aspiration disks are arranged symmetrically, and each aspiration disk is in annular shape.
Further, on the opposite end face of each aspiration disk, the center of each aspiration disk of ring be evenly equipped with it is several convex
Block, the aspiration chamber are connected to the negative pressure cavity by the gap between the adjacent convex block.
Further, the convex block is uniformly distributed three of aspiration disk center described in ring, and each convex block is in fan shape.
Further, it is equipped with chamfering on the peripheral surface of the two aspiration disks, in the edge of the aspiration slot.
Further, the aspiration unit is at least two arranged along the shaft axially spaced-apart, described in adjacent two
Be fixed with the internal shaft part for being formed with cavity between aspiration unit, the connected cavity interconnect and at least one end it is described
Cavity is connected with the negative pressure cavity.
Further, distinguish in one end that each semiaxis connects with the aspiration disk and the both ends of each shaft part
It is fixed with ring flange, the two aspiration disks of each aspiration unit and is connected to each two opposing end surface of aspiration unit
On the ring flange be fixed on together by wearing four bolt.
Further, correspond to each ring flange, the ring flange is supplied in being formed on the end face of each aspiration disk
Embedded embedding slot.
Compared with the prior art, Wheat Pneumatic Precise Seeder of the present invention has the advantage that：
(1) Wheat Pneumatic Precise Seeder of the present invention, the aspiration chamber of air-suction seed metering device by negative pressure cavity with
Negative pressure device is connected to, and aspiration slot and aspiration chamber pass through the gap area between aspiration disk so that and the pressure of aspiration slot everywhere is uniform,
And then sowing is more uniform, having relatively has more excellent seeding effect.Assembling between each part is relatively simple, damage parts
It is also easy repair afterwards, scrapping for entire seed dropping mechanism will not be caused because of the damage of some part, there is more excellent use
Effect.
(2) by the setting of aspiration disk in annular shape, easy to process and use.
(3) it must be arranged by convex block between making two aspiration disks and form complete, uniform gap, so that the pressure of aspiration slot everywhere
Power is uniform.
(4) convex block is in fan shape, and it is uniform to be conducive to the pressure of aspiration intracavitary everywhere.
(5) chamfering is set in the edge of aspiration slot, aspiration slot is entered to seed and plays guiding role.
(6) multiple aspiration unit interval arrangements, can be carried out at the same time multi-row seeding, be conducive to improve sowing efficiency.
(7) by being arranged groove on aspiration disk, and installed by the combination of groove and ring flange, be conducive to negative pressure cavity with
The sealing that aspiration chamber is connected to cavity, in the negative pressure device of equal-wattage, to improve the suction to seed.
Description of the drawings
The attached drawing for constituting the part of the present invention is used to provide further understanding of the present invention, schematic reality of the invention
Example and its explanation are applied for explaining the present invention, is not constituted improper limitations of the present invention.In the accompanying drawings：
Fig. 1 is the integrally-built axonometric drawing of Wheat Pneumatic Precise Seeder described in the embodiment of the present invention；
Fig. 2 is the axonometric drawing of Wheat Pneumatic Precise Seeder part-structure half section described in the embodiment of the present invention；
Fig. 3 is enlarged drawing at Fig. 2 kinds II；
Fig. 4 is enlarged drawing at Fig. 1 kinds I；
Fig. 5 is enlarged drawing at III in Fig. 1；
Fig. 6 is the front view of air-suction seed metering device described in the embodiment of the present invention；
Fig. 7 is the explosive view that air-suction seed metering device axis is surveyed described in the embodiment of the present invention；
Fig. 8 is the sectional view of aspiration unit described in the embodiment of the present invention；
Fig. 9 is the enlarged drawing at B in Fig. 8；
Figure 10 is seed scraping device and aspiration unit matching schematic diagram described in the embodiment of the present invention；
Figure 11 is the structural schematic diagram of the air-suction seed metering device with multiple aspiration units described in the embodiment of the present invention；
Reference sign：
1- racks, 2- plants cases, 21- kinds storehouse, 211- rear baffles, 212- front aprons stop section, 22- discharge plates, 23- before 2121-
Kind position control panel, 2301- mounting holes, 24- mounting plates, 2401- strip holes, 3- air-suction seed metering devices, 31- shafts, 311- semiaxis,
31101- negative pressure cavities, 3111- semiaxis straightways, half shaft flanges of 3112-, 312- gears, 32- aspiration units, 321- aspiration disks,
32101- through-holes, 3211- circular troughs, 3212- grooves, 322- aspiration chambers, 323- aspiration slots, the gaps 324-, 325- convex blocks, 326-
Embedding slot, 33- seed scraping devices, 331- scrape kind of a piece, 332- installation sheets, 34- seed scraping device seats, 35- seed guiding grooves, 36- shaft parts, 4- trench diggings
Device.
Specific implementation mode
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
The present embodiment is related to a kind of Wheat Pneumatic Precise Seeder, in the band of external draft gear such as tractor etc.
Dynamic lower completion sowing, as depicted in figs. 1 and 2 comprising rack 1, rotation are set to the air-suction seed metering device 3 in rack 1, are set to rack
It plants case 2, negative pressure device on 1 and is fixed in rack 1, and is undertaken in the plough 4 that air-suction seed metering device 3 goes out kind of mouth.
In the present embodiment, negative pressure device is wind turbine, structure in the prior art can be used with plough 4, herein not
It repeats again.Wind turbine is not shown, and plough 4 only shows to accept the interface of seed.
In said mechanism, as shown in Fig. 2, plants case 2 includes the kind storehouse 21 of storage seed, and it is connected to kind of storehouse 21, and
The discharge plate 22 for extending to 3 lower section of air-suction seed metering device further includes the kind for adjusting the flow that seed is entered discharge plate 22 by kind of storehouse 21
Position control panel 23.
In the present embodiment, kind storehouse 21 uses split structure, including rear baffle 211, front apron 212 and left and right end plate.
Wherein, the function of left and right baffle is realized by rack 1.Each composition plate is fixed by bolts connection, in order to dismount.Such as Fig. 2 institutes
Showing, rear baffle 211 is using three stage structure, including rear vertical section, the rear interlude for connecting with rear vertical end and extending obliquely,
And the rear horizontal segment of 3 bottom of air-suction seed metering device is connect and extended to interlude.Then horizontal segment constitutes above-mentioned discharge plate
22.Front apron 212 includes preceding vertical section, is connect with preceding vertical section and the inclined preceding interlude of interlude backward, and with it is preceding in
Between the section preceding blocking section 2121 that connects and extend downwardly.Thus it is arranged, preceding blocking section can be passed through with the seed in kind storehouse 21 by storing
After gap between 2121 and rear interlude constantly flows into horizontal segment namely discharge plate 22.
The structure that position control panel 23 is planted in the present embodiment is as shown in Figure 1 and Figure 3 and Figure 5, and one side stops section before being close to
2121, and be arranged through left and right end plate.The part of left and right end plate is passed through to be provided with mounting hole 2301 at it, and at left and right end
L-shaped mounting plate 24 is fixed on plate, it is preferred that the mounting plate 24 is angle steel.Corresponding installation is equipped on mounting plate 24
The vertical strip hole 2401 that hole 2301 is arranged.Fixed position of the kind position control panel 23 on mounting plate 24 is adjustable as a result, with can
Adjust the gap between kind of position control panel 23 and rear centre, and then flow of the seed to discharge plate 22 in control kind storehouse 21.With correspondence
A variety of different speed of drilling.
In said structure, air-suction seed metering device 3 is to form continuous single seed, as shown in Figure 6 and Figure 7, the aspiration
Feed mechanism for seed 3 includes the shaft 31 being made of two semiaxis 311, and the aspiration unit 32 being arranged between two semiaxis 311, also
Including the seed scraping device 33 being fixed in rack 1.
311 lateral ends of two-semiaxle rotate in rack 1, can be rotated under the drive of draft gear, and drive
It is rotated set on the aspiration unit 32 between it.In the present embodiment, the structure of two semiaxis 311 is identical, structure as shown in fig. 7,
Include semiaxis straightway 3111 and half shaft flange 3112, and through hole, the through hole and outside are equipped with along the axle center of semiaxis 311
Negative pressure device connects to form negative pressure cavity 31101 by rotation ventilation street corner.Certainly, due to only needing side semiaxis 311 to be filled with negative pressure
It sets connected, therefore also can through hole only be set on a semiaxis 311 wherein.But, even if there are through hole in both sides.Due to the gas
The needs of feed mechanism for seed 3 are inhaled to rotate under the drive of draft gear, it is essential to need to use gear 312 or sprocket wheel, therefore make
Used time, the side through hole not connect with negative pressure device can be blocked from the gear 312 or sprocket wheel with installation with it, be not required to
Want additional closure part.But semiaxis 311 structure in both sides is identical compared with 311 structure difference of two-semiaxle, since part category subtracts
It is few, thus it is convenient for tissue processing and installation.
Aspiration unit 32 is connected between 3112 sections of two halves shaft flange, including two are poised for battle arrangement and in circular gas
Sucker 321.For ease of description, the opposite end face of two aspiration disks 321 is known as 321 inner side end of aspiration disk, another side end face is
End face outside.The structure of aspiration disk 321 on 321 inner side end of aspiration disk as shown in fig. 7, be equipped with the recessed circular trough in surface
3211, which forms aspiration chamber 322 as shown in Figure 8 by the fastening of two aspiration disks 321.The aspiration chamber
322 are connected to negative pressure cavity 31101, and the aspiration chamber 322 is negative pressure state at work, to be attracted by the pairs of seed of negative pressure shape.
And be that aspiration chamber 322 is made to be connected to negative pressure cavity 31101, in the present embodiment, run through as shown, being equipped at 321 center of aspiration disk
Aspiration disk 321 and the through-hole being connected to through hole.
Meanwhile the circumference of 321 inner side end of ring aspiration disk is equipped with as shown in Figure 9, the L-shaped groove in section
3212, which forms the aspiration slot 323 that can accommodate seed by the fastening of two aspiration disks 321.Aspiration chamber 322
Negative pressure state can inhale in seed to aspiration slot 323, and enter in aspiration slot 323 for ease of seed, this implementation middle ring aspiration slot 323
Outer ledge be additionally provided with the chamfering for playing guiding role.
To make aspiration slot 323 be connected to aspiration chamber 322, in this implementation, as shown in figure 9, in the two aspiration disks mutually fastened
Gap 324 is installed between 321, which can make the pressure of aspiration slot 323 everywhere uniform.
And be to form above-mentioned gap 324, it can be on the opposite end face of each aspiration disk 321, the center cloth of each aspiration disk of ring 321
Several convex blocks 325 higher than 321 inner side end of aspiration disk are set, in the present embodiment, as shown in fig. 7, the convex block 325 is that ring through-hole is equal
Three of cloth, and in order to keep the pressure of atmospheric pressure cavity everywhere uniform, convex block 325 is arranged in fan-shaped in this implementation.
In the present embodiment, the fixed form of semiaxis 311 and aspiration unit 32 is as shown in fig. 7, in 321 end face outside of aspiration disk
Circle centre position be equipped with for half shaft flange 3112 be embedded in embedding slot 326.It is equipped with the mounting hole across boss in 326 bottom of embedding slot
2301, the via of corresponding mounting hole 2301 is equipped on half shaft flange 3112, to make two-semiaxle 311 and two aspirations by bolt pair
Disk 321 is fixed.Can be effectively improved in such a way that half shaft flange 3112 is embedded in aspiration chamber 322 be connected to negative pressure cavity 31101 it is close
Sealing property.It also allows for further increasing sealing performance in 326 bottom of embedding slot setting gasket.
By above-mentioned setting, at work, negative pressure state is formed in aspiration chamber 322 by external negative pressure device, works as aspiration
When unit 32 turns over discharge plate 22, it can make that seed is uniform, simple grain is adsorbed in aspiration slot 323.
To make seed be detached from out of aspiration slot 323, the present embodiment is additionally provided with seed scraping device 33.The structure of the seed scraping device 33 is as schemed
It is flaky shown in 10, it is approximate with the width in gap 324.It includes probeing into scraping kind of piece 331 and extending to for gap 324
Installation sheet 332 outside aspiration unit 32.And 33 top edge of seed scraping device is arranged horizontal by approximate 45° angle so that seed with
Aspiration unit 32 is detached from and seed is directed in the plough 4 on seeder frame 1.Meanwhile seed scraping device 33 is following
Edge extends to the bottom of aspiration unit 32, to constitute the closure to partial gap 324, in the identical situation of negative pressure device pressure
Under, increase suction of the aspiration chamber 322 to seed.
In the present embodiment, the mounting means as shown in the figure 4 of seed scraping device 33.It is connected between front apron 212 and rear baffle 211
There is seed scraping device seat 34, the " U "-shaped seed guiding groove 35 in section is fixed on seed scraping device seat 34.It is provided with two on installation sheet 332
A mounting hole.Corresponding mounting hole is equipped with the bolt hole through seed guiding groove 35 on seed guiding groove 35, in a manner of by bolt pair,
Seed scraping device 33 is set to be fixed in seed guiding groove 35.Seed guiding groove 35 may also function as the effect being oriented to seed, so that seed is entered and scrapes ditch device
It is interior, to prevent seed from being trickled down after being detached from aspiration unit 32.
Efficiency is sowed to improve.The air-suction seed metering device 3 of the present embodiment can be as shown in figure 11, simultaneously by the axial direction along shaft 31
The multiple aspiration units 32 of row arranged for interval and seed scraping device 33 complete multirow and synchronize sowing.At this point, in two adjacent aspiration lists
It is fixed with shaft part 36 between member 32, and cavity is provided on shaft part 36, so that the aspiration chamber 322 of each aspiration unit 32 is connected to.
For ease of installation, it is equipped with flange arrangement identical with half shaft flange 3112 at the both ends of each shaft part 36, and use and half method of principal axes
Blue 3112 identical modes are fixed with aspiration disk 321, and details are not described herein.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (8)
1. a kind of Wheat Pneumatic Precise Seeder, including rack (1), rotation is set to the air-suction seed metering device (3) in rack (1),
It is fixed on plants case (2) in rack (1), negative pressure device, and is fixed in rack (1), and accepts the air-suction seed metering device (3)
Go out the plough (4) of kind of mouth, it is characterised in that：
The air-suction seed metering device (3) includes：
Shaft (31), including one end rotation are set to two semiaxis (311) in the rack (1), extremely in two semiaxis (311)
One of few inside is formed with the negative pressure cavity (31101) being connected to the negative pressure device；
Aspiration unit (32) is fixed between the other end of two semiaxis (311), and the aspiration unit (32) includes because fastening
And it is formed with two pieces of aspiration disks (321) of aspiration chamber (322)；The aspiration chamber (322) is connected to the negative pressure cavity (31101)；
The peripheral surface of aspiration disk (321) described in ring two is formed with aspiration slot (323), the aspiration slot (323) and the aspiration chamber (322)
It is connected to by the gap (324) being set between the two aspiration disks (321)；
Seed scraping device (33) is fixedly arranged in the rack (1), and the seed scraping device (33), which has, probes into scraping in the gap (324)
Kind piece (331)；
The plants case (2) includes:
Kind storehouse (21)；
Discharge plate (22) is connected to described kind of storehouse (21), and extends to the lower section of the air-suction seed metering device (3)；
Kind position control panel (23) is configured to adjust the seed flow velocity for entering the discharge plate (22) by described kind of storehouse (21)
Section.
2. Wheat Pneumatic Precise Seeder according to claim 1, it is characterised in that：The two aspiration disks (321) are right
Claim arrangement, and each aspiration disk (321) is in annular shape.
3. Wheat Pneumatic Precise Seeder according to claim 1, it is characterised in that：In each aspiration disk (321)
On opposite end face, the center of each aspiration disk (321) of ring be evenly equipped with several convex blocks (325), the aspiration chamber (322) and institute
Negative pressure cavity (31101) is stated to be connected to by the gap between the adjacent convex block (325).
4. Wheat Pneumatic Precise Seeder according to claim 3, it is characterised in that：The convex block (325) is ring institute
Uniformly distributed three in aspiration disk (321) center are stated, and each convex block (325) is in fan shape.
5. Wheat Pneumatic Precise Seeder according to claim 1, it is characterised in that：In the two aspiration disks (321)
Peripheral surface on, in the edge of the aspiration slot (323) be equipped with chamfering.
6. Wheat Pneumatic Precise Seeder according to any one of claims 1-5, it is characterised in that：The aspiration list
First (32) are at least two arranged along the shaft (31) axially spaced-apart, are fixed between the adjacent two aspiration unit (32)
Inside is formed with the shaft part (36) of cavity, and the connected cavity interconnects and at least the cavity of one end is born with described
Pressure chamber (31101) is connected.
7. Wheat Pneumatic Precise Seeder according to claim 6, it is characterised in that：Each semiaxis (311) with
Ring flange, each aspiration has been respectively fixedly connected in the both ends of one end and each shaft part (36) that the aspiration disk (321) connects
The two aspiration disks (321) of unit (32) and the method being connected on each (32) two opposing end surface of the aspiration unit
Blue disk is fixed on together by wearing four bolt.
8. Wheat Pneumatic Precise Seeder according to claim 7, it is characterised in that：Corresponding to each ring flange,
In be formed on the end face of each aspiration disk (321) for the ring flange be embedded in embedding slot (326).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810404700.5A CN108702902A (en) | 2018-04-28 | 2018-04-28 | Wheat Pneumatic Precise Seeder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810404700.5A CN108702902A (en) | 2018-04-28 | 2018-04-28 | Wheat Pneumatic Precise Seeder |
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| Publication Number | Publication Date |
|---|---|
| CN108702902A true CN108702902A (en) | 2018-10-26 |
Family
ID=63867643
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810404700.5A Pending CN108702902A (en) | 2018-04-28 | 2018-04-28 | Wheat Pneumatic Precise Seeder |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110506473A (en) * | 2019-08-18 | 2019-11-29 | 孙同梅 | A kind of transmission mechanism, seeding apparatus and type of seeding |
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| CN206024451U (en) * | 2016-05-19 | 2017-03-22 | 华中农业大学 | Ditching profile modeling pneumatic vegetables precision planter |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110506473A (en) * | 2019-08-18 | 2019-11-29 | 孙同梅 | A kind of transmission mechanism, seeding apparatus and type of seeding |
| CN110506473B (en) * | 2019-08-18 | 2024-03-29 | 孙同梅 | Transmission mechanism, seeding device and seeding method |
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Application publication date: 20181026 |