CN114885646A - Air-suction type close-seeding seed sowing device - Google Patents

Air-suction type close-seeding seed sowing device Download PDF

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Publication number
CN114885646A
CN114885646A CN202210479849.6A CN202210479849A CN114885646A CN 114885646 A CN114885646 A CN 114885646A CN 202210479849 A CN202210479849 A CN 202210479849A CN 114885646 A CN114885646 A CN 114885646A
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China
Prior art keywords
seed
seeding
sowing
air pressure
suction
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CN202210479849.6A
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Chinese (zh)
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CN114885646B (en
Inventor
曾山
马立刚
于开鑫
向星岚
曾丰毅
廖明铭
涂清柳
魏斯龙
曾力
武玉金
文智强
徐卓
刘伟健
杨禹锟
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South China Agricultural University
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South China Agricultural University
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Priority to CN202210479849.6A priority Critical patent/CN114885646B/en
Publication of CN114885646A publication Critical patent/CN114885646A/en
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Publication of CN114885646B publication Critical patent/CN114885646B/en
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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01C—PLANTING; SOWING; FERTILISING
    • A01C7/00—Sowing
    • A01C7/18—Machines for depositing quantities of seed at intervals
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01C—PLANTING; SOWING; FERTILISING
    • A01C19/00—Arrangements for driving working parts of fertilisers or seeders
    • A01C19/02—Arrangements for driving working parts of fertilisers or seeders by a motor
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
    • Y02P60/20—Reduction of greenhouse gas [GHG] emissions in agriculture, e.g. CO2

Abstract

The invention discloses an air-suction type close-seeding seed sowing device, which comprises a rack and seeding devices arranged on two sides of the rack; each group of seeding devices comprises a shell, a seed storage mechanism, a seed discharging mechanism and a seed conveying mechanism; a seed filling chamber is arranged at the position of the shell corresponding to the seed sowing mechanism; the seed sowing mechanism comprises a sowing plate and a rotary driving mechanism; a plurality of seed suction holes are formed in the side surface of the seed discharging disc and are uniformly arranged along the circumferential direction of the seed discharging disc; the seeding device further comprises an air pressure device, the air pressure device is located in the frame and comprises a negative air pressure chamber and a positive air pressure chamber, when the seed metering disc rotates to the seed taking station, the suction of the negative air pressure chamber enables seeds to be adsorbed in the seed sucking holes of the seed metering disc, and when the seed metering disc rotates to the seeding station, the blowing force of the positive air pressure chamber enables the seeds to fall from the seed sucking holes of the seed metering disc and be discharged through the seed metering holes of the seed metering channel.

Description

Air-suction type close-seeding seed sowing device
Technical Field
The invention relates to the field of agriculture, in particular to an air-suction type close-seeding seed metering device.
Background
Seeding is a basic link for planting different crops, and the quality of seeding affects the seedling emergence rate; with the continuous development of science and technology, the traditional manual seeding is gradually replaced by the automatic seeding, for example, the invention patent with the publication number of CN111587637B discloses an air-suction type seed sowing device, the air-suction type seed sowing device comprises a front shell, a rear shell and a seed suction disc, the front shell comprises a seed inlet area, a seed storage area and a seed sowing area, and the front end of the rear shell forms a positive pressure area and a negative pressure area. Through the interaction of the positive pressure area and the negative pressure area, the seeds are adsorbed on the negative pressure area on the rear shell, and the seeds fall when rotating to the positive pressure area, so that the seeds are quickly sucked and discharged, the seed damage rate is low, and the seeds are stably sucked.
However, the driving motor for driving the seed suction disc to rotate in the air-suction seed sowing device is not arranged on the front shell or the rear shell, so that the structure is not compact and the volume is large; in addition, the air-suction seed metering device has large seeding interval and is not suitable for intensive seeding, so that further improvement is needed.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides an air-suction type close-seeding seed metering device which has the advantages of compact structure, small volume and small seeding pitch.
The technical scheme for solving the technical problems is as follows:
an air-suction type close-seeding seed sowing device comprises a rack and seeding devices arranged on two sides of the rack, wherein each group of seeding devices comprises a shell, a seed storage mechanism, a seed sowing mechanism and a seed conveying mechanism for conveying seeds in the seed storage mechanism to the seed sowing mechanism, and a seed filling chamber is arranged at the position, corresponding to the seed sowing mechanism, of the shell; the seed sowing mechanism comprises a sowing disc arranged on the rack and a rotary driving mechanism used for driving the sowing disc to rotate, wherein a plurality of seed suction holes are formed in the side surface of the sowing disc and are uniformly arranged along the circumferential direction of the sowing disc;
the seeding device also comprises an air pressure device which is used for driving the seed suction holes on the seed discharging disc to suck seeds at a seed taking station and blow the seeds off at the seeding station, wherein the air pressure device is positioned in the rack and comprises a negative air pressure chamber and a positive air pressure chamber which are arranged in the rack, the negative air pressure chamber is positioned on the seed taking station, and the positive air pressure chamber is positioned at the seeding station; the frame is provided with a positive air pressure hole at a position corresponding to the positive air pressure chamber, and the frame is provided with a negative air pressure hole at a position corresponding to the negative air pressure chamber; when the seed discharging disc rotates to the seed taking station, the suction force of the negative pressure chamber causes the seeds to be absorbed in the seed absorbing holes of the seed discharging disc, and when the seed discharging disc rotates to the seed discharging station, the blowing force of the positive pressure chamber causes the seeds to fall from the seed absorbing holes of the seed discharging disc and to be discharged through the seed discharging port of the seed discharging channel.
Preferably, the seed storage mechanism comprises a seed box arranged on the shell, a seed inlet is arranged at the lower end of the seed box, the seed inlet is communicated with the seed filling chamber through a seed conveying channel, and the seed conveying mechanism is formed by the seed conveying channel.
Preferably, a material blocking mechanism is arranged in the seed filling chamber, the material blocking mechanism comprises circular arc-shaped seed blocking plates, the seed blocking plates are divided into two groups, one group of the seed blocking plates is arranged at the outlet of the seed conveying channel, and the other group of the seed blocking plates is arranged at the inlet of the seed sowing channel; wherein, the seed baffle plate positioned at the outlet of the seed conveying channel is positioned at the outer side of the seed sucking hole; the seed baffle plate positioned at the inlet of the seed sowing channel is positioned at the inner side of the seed suction hole; the bottom space between the two groups of seed baffle plates in the seed filling chamber forms the seed taking station, and the bottom of the seed filling chamber is higher than the bottom of the seed discharging disc, so that the seed sucking holes in the seed discharging disc, which are positioned at the bottom of the seed filling chamber, are exposed outside the shell.
Preferably, the shell is provided with a seed discharging hole at the seed taking station, and a seed discharging plug is arranged in the seed discharging hole.
Preferably, the rotary driving mechanism comprises a mounting seat arranged on the rack, a rotary motor arranged on the mounting seat, a speed reducer and a gear transmission mechanism, wherein the gear transmission mechanism comprises a driving gear and a driven gear; an output shaft of the rotating motor is connected with an input shaft of the speed reducer, and an output shaft of the speed reducer is connected with the driving gear; the outer circumferential surface of the seed discharging disc is provided with convex teeth meshed with the gear teeth of the driving gear, and the seed discharging disc forms the driven gear; and an avoiding groove for avoiding the driving gear is arranged on the rack.
Preferably, the seeding plates in the seeding devices on the two sides are connected through a rotating shaft, and the machine frame is provided with a rotating bearing at a position corresponding to the rotating shaft.
Preferably, the rotating shaft is a stepped shaft, and the cross sections of the two sides of the rotating shaft are square; the axis of the seed plate is provided with a square hole, and when the seed plate is arranged on the rotating shaft, the top cover is arranged on the rotating shaft through screws, so that the seed plate is fixed on the rotating shaft.
Preferably, the distance between the two sets of seed plates is 37-38 mm.
Preferably, the rack is provided with mounting lugs, the mounting lugs are provided with mounting holes, the shells of the two seeding devices are provided with matching holes at positions corresponding to the mounting holes, and the shells of the two seeding devices are mounted on the mounting holes through bolts.
Preferably, the outer side of the seed suction hole is rounded.
Compared with the prior art, the invention has the following beneficial effects:
(1) the rotary driving mechanism in the air-suction type close-seeding seed-metering device is arranged on the shell, so that the air-suction type close-seeding seed-metering device can work independently, the air-suction type close-seeding seed-metering device only needs to be arranged on seeding equipment, and a transmission mechanism (such as a belt transmission mechanism) does not need to be arranged again to drive the seed-metering disc to rotate, so that the air-suction type close-seeding seed-metering device is more convenient to install, and the air-suction type close-seeding seed-metering device is more compact in structure and smaller in size.
2. The two sets of seeding devices are arranged in the air-suction type close-seeding seed-metering device, and can synchronously seed, so that the seeding efficiency is favorably improved, and the two sets of seeding devices are arranged on the two sides of the frame, so that the distance between the two seeding devices is reduced, correspondingly, the seeding distance is also reduced, and the intensive seeding is favorably implemented.
3. The air-suction type close-seeding seed-metering device is provided with a positive air pressure chamber and a negative air pressure chamber, when the seed-metering disc rotates to the seed-taking station, the suction force of the negative air pressure chamber causes the seeds to be absorbed in the seed-sucking holes of the seed-metering disc, and when the seed-metering disc rotates to the seeding station, the blowing force of the positive air pressure chamber causes the seeds to fall from the seed-sucking holes of the seed-metering disc and be discharged through the seed-metering opening of the seed-metering channel.
Drawings
Fig. 1 is a schematic perspective view of an air-suction type close-seeding seed-metering device of the present invention.
Fig. 2 is a schematic structural diagram of the rack.
Fig. 3 is an isometric view of fig. 2.
Fig. 4 is a schematic perspective view of the housing.
Fig. 5 is a schematic perspective view of the rotation driving mechanism.
FIG. 6 is a schematic view of the structure of the seed plate.
Fig. 7 is a schematic structural view of the rotating shaft.
Fig. 8 is a schematic view of the installation of the rotating shaft.
In the figure: 1. a first seed planting device; 101. a seed box; 102. entering a seed mouth; 103. a baffle plate; 104. a seed discharge port; 2. a mounting seat; 3. mounting lugs; 4. a frame; 401. a positive air pressure vent; 402. a positive pressure chamber; 403. a negative pressure chamber; 404. a negative air pressure hole; 405. a bearing mounting hole; 406. an avoidance groove; 5. a seed discharging tray; 501. a seed suction hole; 502. a square hole; 6. unloading the seed plug; 7. a rotating electric machine; 8. a second sowing device; 9. a driven gear; 10. a rotating shaft; 1001. a screw; 11. a top cover; 12. and a bearing.
Detailed Description
The present invention will be described in further detail with reference to examples and drawings, but the present invention is not limited thereto.
Referring to fig. 1-8, the air-suction type close-seeding seed-metering device of the present invention comprises a frame 4 and seeding devices arranged on two sides of the frame 4, namely a first seeding device 1 and a second seeding device 8, wherein the two seeding devices share the following "air pressure device" and "rotation driving mechanism", which is beneficial to saving cost.
Referring to fig. 1-8, the sowing device comprises a housing, a seed storage mechanism, a seed discharging mechanism and a seed conveying mechanism for conveying seeds in the seed storage mechanism to the seed discharging mechanism, wherein the housing is provided with a seed filling chamber at a corresponding position of the seed discharging mechanism; seed metering mechanism includes seed metering dish 5 and is used for the drive seed metering dish 5 pivoted rotary driving mechanism, wherein, seed metering dish 5's side is provided with a plurality of seed suction holes 501, a plurality of seed suction holes 501 along seed metering dish 5's circumferencial direction align to grid, wherein, the fillet is all done to every seed suction hole 501's lateral surface, and its aim at adsorbs the seed better.
Referring to fig. 1-8, the seed storage mechanism includes a seed box 101 disposed on the housing, a seed inlet 102 is disposed at a lower end of the seed box 101, the seed inlet 102 communicates with the seed filling chamber through a seed conveying channel, and the seed conveying channel constitutes the seed conveying mechanism.
Referring to fig. 1-8, the seeding apparatus further comprises an air pressure device for driving the seed suction holes 501 on the seeding plate 5 to suck seeds at a seed taking station and blow the seeds off at a seeding station, wherein the air pressure device is located in the frame 4 and comprises a negative air pressure chamber 403 and a positive air pressure chamber 402 which are arranged in the frame 4, wherein the negative air pressure chamber 403 is located at the seed taking station, and the positive air pressure chamber 402 is located at the seeding station; the frame 4 is provided with a positive air pressure hole 401 at a position corresponding to the positive air pressure chamber 402, and the frame 4 is provided with a negative air pressure hole 404 at a position corresponding to the negative air pressure chamber 403; when the seed plate 5 rotates to the seed taking station, the suction force of the negative pressure chamber 403 causes the seeds to be absorbed in the seed absorption holes 501 of the seed plate 5, and when the seed plate 5 rotates to the seed station, the blowing force of the positive pressure chamber 402 causes the seeds to fall from the seed absorption holes 501 of the seed plate 5 and enter the seed discharging channel; the seed discharging channel is vertically arranged along the seed charging chamber and extends downwards, and a seed discharging port 104 is arranged at the bottom of the seed discharging channel.
Referring to fig. 1-8, a material blocking mechanism is arranged in the seed filling chamber, the material blocking mechanism includes circular arc-shaped seed blocking plates 103, the seed blocking plates 103 are divided into two groups, one group of seed blocking plates 103 is arranged at an outlet of the seed conveying channel, and the other group of seed blocking plates 103 is arranged at an inlet of the seed sowing channel; wherein, the seed baffle plate 103 at the outlet of the seed conveying channel is positioned outside the seed suction hole 501; the seed baffle plate 103 at the inlet of the seed discharging channel is positioned at the inner side of the seed sucking hole 501; the bottom space between the two seed blocking plates 103 in the seed filling chamber forms the seed taking station, the bottom of the seed filling chamber is higher than the bottom of the seed discharging plate 5, so that part of the seed sucking holes 501 in the bottom of the seed filling chamber in the seed discharging plate 5 are exposed out of the shell, when the seeds are clamped on the seed sucking holes 501, the seed sucking holes 501 can be rotated out of the shell, and then the seeds are taken out, so that the shell does not need to be detached.
By arranging the two groups of seed baffles 103, on one hand, seeds falling from the outlet of the seed conveying channel can be prevented from interfering with the seeds adsorbed in the seed suction holes 501 in the seed taking station in the seed sowing plate 5; on the other hand, the seeds in the seed suction holes 501 in the seeding station in the seed discharging plate 5 can be ensured not to fall back to the seed taking station again under the blowing force of the positive pressure chamber 402, thereby ensuring the smooth seeding.
Referring to fig. 1-8, the casing is provided with a discharge hole at the seed-taking station, that is, the discharge hole is arranged on a horizontal section of the bottom of the seed-filling chamber; a seed discharging plug 6 is arranged in the seed discharging hole. Through setting up unload kind stopper 6, can with fill kind of seed in the room and get kind of station department and take out.
Referring to fig. 1 to 8, the rotary driving mechanism includes a mounting base 2 disposed on a frame 4, a rotary motor 7 mounted on the mounting base 2, a speed reducer, and a gear transmission mechanism, wherein the gear transmission mechanism includes a driving gear and a driven gear; an output shaft of the rotating motor 7 is connected with an input shaft of the speed reducer, and an output shaft of the speed reducer is connected with the driving gear; convex teeth meshed with the gear teeth of the driving gear are arranged on the outer circumferential surface of the seed discharging disc 5, and the seed discharging disc 5 forms the driven gear; an avoiding groove 406 for avoiding the driving gear is arranged on the frame 4. The driving gear is driven to rotate through the rotating motor 7, so that the driven gear (namely, the seed discharging disc 5 is driven to rotate) is driven to continuously adsorb and convey seeds positioned at the seed taking station to the seeding station.
Referring to fig. 1-8, the seed plates 5 of the seeding devices on both sides are connected by a rotating shaft 10, the frame 4 is provided with a rotating bearing 12 at a position corresponding to the rotating shaft 10, and the rotating bearing 12 is installed in a bearing installation hole 405; the cross section of both sides of axis of rotation 10 is square, the axle center of seed metering dish 5 is provided with square hole 502, when will seed metering dish 5 install in axis of rotation 10, install top cap 11 through screw 1001 on axis of rotation 10, the realization with seed metering dish 5 is fixed in axis of rotation 10 is last.
Referring to fig. 1-8, the distance between the two sets of seed plates 5 is 37-38 mm.
Referring to fig. 1-8, the rack 4 is provided with mounting lugs 3, the mounting lugs 3 are provided with mounting holes, the housings of the two seeding devices are provided with mating holes at positions corresponding to the mounting holes, and the housings of the two seeding devices are mounted on the mounting holes through bolts.
Referring to fig. 1-8, the working principle of the air-suction type close-seeding seed sowing device of the invention is as follows:
during operation, an operator places seeds into the seed box 101, and the seeds in the seed box 101 move into the seed filling chamber through the seed conveying channel. Then, the rotary driving mechanism drives the seed discharging disc 5 to rotate, the seed sucking hole 501 in the seed taking station of the seed discharging disc 5 sucks seeds under the suction force of the negative air pressure chamber 403, when the seeds move to the seed discharging station, the seeds drop from the seed sucking hole 501 under the blowing force of the positive air pressure chamber 402, enter the seed discharging channel and are discharged from the seed discharging port 104 at the bottom of the seed discharging channel, and then the seed discharging is realized.
The present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents and are included in the scope of the present invention.

Claims (10)

1. An air-suction type close-seeding seed sowing device is characterized by comprising a rack and seed sowing devices arranged on two sides of the rack, wherein each group of seed sowing devices comprises a shell, a seed storage mechanism, a seed sowing mechanism and a seed conveying mechanism for conveying seeds in the seed storage mechanism to the seed sowing mechanism, and a seed filling chamber is arranged at a position, corresponding to the seed sowing mechanism, of the shell; the seed sowing mechanism comprises a sowing plate arranged on the rack and a rotary driving mechanism for driving the sowing plate to rotate, wherein a plurality of seed suction holes are formed in the side surface of the sowing plate and are uniformly arranged along the circumferential direction of the sowing plate;
the seeding device also comprises an air pressure device which is used for driving the seed suction holes on the seed discharging disc to suck seeds at a seed taking station and blow the seeds off at the seeding station, wherein the air pressure device is positioned in the rack and comprises a negative air pressure chamber and a positive air pressure chamber which are arranged in the rack, the negative air pressure chamber is positioned on the seed taking station, and the positive air pressure chamber is positioned at the seeding station; the frame is provided with a positive air pressure hole at a position corresponding to the positive air pressure chamber, and the frame is provided with a negative air pressure hole at a position corresponding to the negative air pressure chamber; when the seed discharging disc rotates to the seed taking station, the suction force of the negative pressure chamber causes the seeds to be absorbed in the seed absorbing holes of the seed discharging disc, and when the seed discharging disc rotates to the seed discharging station, the blowing force of the positive pressure chamber causes the seeds to fall from the seed absorbing holes of the seed discharging disc and to be discharged through the seed discharging port of the seed discharging channel.
2. The air-suction close-seeding seed-metering device according to claim 1, wherein the seed storage mechanism comprises a seed box arranged on the housing, the lower end of the seed box is provided with a seed inlet, the seed inlet is communicated with the seed filling chamber through a seed conveying channel, and the seed conveying channel forms the seed conveying mechanism.
3. The air-suction type close-seeding seed sowing device according to claim 1, wherein a material blocking mechanism is arranged in the seed filling chamber, the material blocking mechanism comprises two groups of circular arc-shaped seed blocking plates, one group of the seed blocking plates is arranged at the outlet of the seed conveying channel, and the other group of the seed blocking plates is arranged at the inlet of the seed sowing channel; wherein, the seed baffle plate positioned at the outlet of the seed conveying channel is positioned at the outer side of the seed sucking hole; the seed baffle plate positioned at the inlet of the seed sowing channel is positioned at the inner side of the seed suction hole; the bottom space between the two groups of seed baffle plates in the seed filling chamber forms the seed taking station, and the bottom of the seed filling chamber is higher than the bottom of the seed discharging disc, so that the seed sucking holes in the seed discharging disc, which are positioned at the bottom of the seed filling chamber, are exposed outside the shell.
4. The air-suction type close-seeding seed sowing device according to claim 3, wherein the shell is provided with a seed discharging hole at the seed taking station, and a seed discharging plug is arranged in the seed discharging hole.
5. The air-suction close-seeding seed sowing device according to claim 1, wherein the rotary driving mechanism comprises a mounting seat arranged on the frame, a rotary motor arranged on the mounting seat, a speed reducer and a gear transmission mechanism, wherein the gear transmission mechanism comprises a driving gear and a driven gear; an output shaft of the rotating motor is connected with an input shaft of the speed reducer, and an output shaft of the speed reducer is connected with the driving gear; the outer circumferential surface of the seed discharging disc is provided with convex teeth meshed with the gear teeth of the driving gear, and the seed discharging disc forms the driven gear; and an avoiding groove for avoiding the driving gear is arranged on the rack.
6. The air-suction type close-seeding and seed-metering device according to claim 5, wherein the seed disks of the seeding devices on both sides are connected through a rotating shaft, and the frame is provided with a rotating bearing at a position corresponding to the rotating shaft.
7. The air-aspiration type close-seeding seed sowing device according to claim 6, wherein the rotating shaft is a stepped shaft, and the cross section of both sides of the rotating shaft is square; the axis of the seed plate is provided with a square hole, and when the seed plate is arranged on the rotating shaft, the top cover is arranged on the rotating shaft through screws, so that the seed plate is fixed on the rotating shaft.
8. The air-aspiration close-seeding seed metering device according to claim 1, wherein the distance between the two sets of seed disks is 37-38 mm.
9. The air-suction close-seeding seed-metering device according to claim 1, wherein the frame is provided with mounting lugs, the mounting lugs are provided with mounting holes, the shells of the two seeding devices are provided with matching holes at positions corresponding to the mounting holes, and the shells of the two seeding devices are mounted on the mounting holes through bolts.
10. The air-suction type close-seeding seed sowing device according to claim 6, wherein the outer side of the seed suction hole is rounded.
CN202210479849.6A 2022-05-05 2022-05-05 Air suction type close seeding device Active CN114885646B (en)

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Application Number Priority Date Filing Date Title
CN202210479849.6A CN114885646B (en) 2022-05-05 2022-05-05 Air suction type close seeding device

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Application Number Priority Date Filing Date Title
CN202210479849.6A CN114885646B (en) 2022-05-05 2022-05-05 Air suction type close seeding device

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CN114885646B CN114885646B (en) 2023-04-21

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1489929A (en) * 1973-09-28 1977-10-26 Kehoe J Seeding device
CN205987723U (en) * 2016-08-31 2017-03-01 黑龙江八一农垦大学 Aspirated-air type electric seed sowing mechanism
CN108337959A (en) * 2018-01-10 2018-07-31 华中农业大学 American Ginseng strength pin type essence quantity set arranges device
CN109496504A (en) * 2018-11-07 2019-03-22 华中农业大学 Double plate high speed Pneumatic type bud kind precise seeder
CN109831974A (en) * 2017-11-25 2019-06-04 沈阳华巨科技有限公司 Strength drum-type rape precision seeder

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1489929A (en) * 1973-09-28 1977-10-26 Kehoe J Seeding device
CN205987723U (en) * 2016-08-31 2017-03-01 黑龙江八一农垦大学 Aspirated-air type electric seed sowing mechanism
CN109831974A (en) * 2017-11-25 2019-06-04 沈阳华巨科技有限公司 Strength drum-type rape precision seeder
CN108337959A (en) * 2018-01-10 2018-07-31 华中农业大学 American Ginseng strength pin type essence quantity set arranges device
CN109496504A (en) * 2018-11-07 2019-03-22 华中农业大学 Double plate high speed Pneumatic type bud kind precise seeder

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