CN102742399B - Sowing and fertilizer application machine with characteristic of convenient adjustment control - Google Patents
Sowing and fertilizer application machine with characteristic of convenient adjustment control Download PDFInfo
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- CN102742399B CN102742399B CN201210185424.0A CN201210185424A CN102742399B CN 102742399 B CN102742399 B CN 102742399B CN 201210185424 A CN201210185424 A CN 201210185424A CN 102742399 B CN102742399 B CN 102742399B
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- handle
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- seeding
- rotating disk
- fixed head
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Abstract
The invention discloses a sowing and fertilizer application machine with a characteristic of convenient adjustment control. The machine comprises a fixation frame, a material loading box, a material discharging hopper, a sowing turntable, a handle control mechanism and a sowing rotation drive mechanism. The fixation frame is provided with a bottom frame, a material loading box fixation frame, a fixation beam and an adjustable pull rod. A side surface of the box body of the material loading box is provided with an observation window and a transparent plastic plate. Both sides of a material outlet of the box body are provided with a clamping groove, wherein movable baffles are arranged in the clamping groove, and movement of the baffle is driven by pull thread on the other end. The material discharging hopper and the sowing turntable are erected below the material outlet, wherein inclined blades are distributed on periphery of an upper end surface of the sowing turntable. A rotation shaft penetrates through the sowing turntable, wherein an upper end of the rotation shaft is fixed with the material discharging hopper. A side wall of a material discharging pipe on the lower end of the material discharging hopper is provided with a material casting port. The lower end of the rotation shaft is connected with the pull thread through a connection rod, wherein the pull thread is driven by the handle control mechanism. According to the present invention, the supporting weight of the fixation frame is large, on/off of the material outlet, the material discharging amount, and the material discharging direction can be adjusted at any moments during the use process, and the adjustment control is convenient.
Description
Technical field
The present invention relates to a kind of control device, relate in particular to a kind of convenient seeding and fertilizer spreading machine of controlling that regulates.
Background technology
A kind ofly follow scientific and technical development, the mechanization of agricultural has obtained certain development, the sowing in existing some area and fertilising are all to complete by mechanization, and in order to meet the demand in market, sower and fertilizer distributor have been become substantially based on one, combined seed and fertilizer drill of the prior art comprises power walking device and fertilizing and seeding apparatus, its charging box is simple in structure, its discharging adopts the structure of discharge nozzle, in use, material in discharge nozzle is easily wasted, or adopt coordinating of discharging opening and hopper and material seeding rotating disk, but the baffle plate of discharging opening can not be controlled at any time it and close, spreading mouth load cannot be controlled at any time, control inconvenient, and the switch of its discharging opening and load thereof be all to adjust in advance, adjust trouble, can not regulate at any time in the course of the work, the discharging direction of the mouth of spreading is simultaneously mostly directly cannot realize the effect of sowing downwards, or spreading mouth is in side, but it is fixed structure, therefore bottom, having small part material cannot go out from spreading mouth, thereby caused the waste of material, impact is used next time, before using next time, need cleaning, improved hand labor intensity, wasted time and energy, and the direction of hopper spreading mouth can not change, thereby the angle of sowing can not change, and its width of sowing is fixed, thereby can not be applicable to the instructions for use on all ground.
Summary of the invention
The object of the invention is in order to make up the deficiency of prior art, a kind of convenient seeding and fertilizer spreading machine of controlling that regulates is provided, solved existing seeding and fertilizer spreading machine in use, can not observe at any time the amount of material, regulate switch, the size of load and the direction of discharging of spreading mouth, regulate the problems such as control is inconvenient, and support load-bearing is little.
The present invention is achieved through the following technical solutions:
A kind of convenient seeding and fertilizer spreading machine of controlling that regulates, include fixed mount, charging box, blanking all, material seeding rotating disk, handle control mechanism and material seeding rotary drive mechanism, it is characterized in that: described fixed mount includes bottom framework and charging box fixed frame, between described bottom framework and charging box fixed frame, by front column and back stay, fix, described front column is provided with built-in beam between middle part, on described built-in beam, be distributed with several installing holes, described front column upper end is hinged with respectively adjustable draw rod, on described charging box fixed frame, charging box is installed, described charging box includes casing, the side of described casing is provided with observation panel, described observation oral area is installed with the transparent plastic sheet coordinating with observation panel, the bottom of described casing is taper, and be provided with discharging opening, the both sides of described discharging opening are provided with draw-in groove, in described draw-in groove, be installed with movably baffle plate, described baffle plate is provided with the adjustment hole coordinating with discharging opening, one end of described baffle plate is fixed on casing bottom by extension spring, the bracing wire that moves through the other end of described baffle plate drives, the below of described discharging opening set up discharge bucket and material seeding rotating disk, the upper surface circumferential distribution of described material seeding rotating disk has the blade of inclination, in described material seeding rotating disk, there is rotating shaft to pass, described rotating shaft upper end is installed with discharge bucket, the lower end of described discharge bucket is provided with discharge nozzle, on the sidewall of described discharge nozzle, have spreading mouth, the bottom surface of described discharge nozzle is skewback, the incline direction of its skewback is towards spreading mouth, and spreading mouth is communicated with skewback, described discharge nozzle stretches into the blade middle part of material seeding rotating disk, the rotation of described material seeding rotating disk is driven by motor, described rotating shaft lower end is installed with connecting rod, and the end of described connecting rod is installed with bracing wire, and described bracing wire all has handle control mechanism to drive.
Described adjustable draw rod includes pull bar fixed cover, the middle part of described pull bar fixed cover is provided with internal thread hole, and be combined with pull bar by internal thread hole, described pull bar bottom is provided with the external screw thread coordinating with pull bar fixed cover internal thread hole, the end of described pull bar is respectively equipped with connecting hole, on described front column, be installed with respectively fixedly ear, on described fixedly ear, be respectively equipped with circular mounting hole, described pull bar fixed cover bottom is provided with rotating shaft, described rotating shaft and circular mounting hole are rotatably assorted, and the rotating shaft other end is by screwing nut fixing and locking.
The bottom of described material seeding rotating disk is installed with fixed cover, the lower end of described fixed cover is provided with bevel gear, and the angular wheel being connected with driven pulley by bevel gear coordinates, described driven pulley is driven by motor, between described blade bottom and material seeding rotating disk, be provided with connecting plate, described connecting plate matches with the fixing lug boss at material seeding rotating disk middle part.
Described handle control mechanism includes base, described base is provided with a left side, right fixed head, the upper surface of described left fixed head is arcwall face, and on arcwall face, be distributed with teeth, on described left fixed head, be hinged with handle and clamp seat, described handle clamps limiting plate is installed on seat, on described limiting plate, there is the helical teeth coordinating with teeth on left fixed head arcwall face, described handle clamps executing on material direction control panel on seat and left fixed head and is also provided with bracing wire fixed head, described bracing wire fixed head is controlled the discharging direction of spreading mouth by bracing wire and connecting rod, the outside of described left fixed head is provided with back stay by rotating shaft, the end of described back stay is installed with support plate, the front end of described support plate is provided with curved end, on described curved end, be distributed with teeth, the middle part of described support plate is rotatablely equipped with handle, on described handle, adjustable plate is installed, described adjustable plate is provided with the barb coordinating with teeth on support plate curved end, on described handle, be also installed with bracing wire, and by bracing wire, control the size of switch or the load of spreading mouth, handle drives is passed through respectively in the movement of described limiting plate and adjustable plate.
The middle part that described handle clamps seat is provided with holddown groove, and described holddown groove is installed on left fixed head both sides, and the top of described holddown groove front end is provided with block, and described limiting plate is positioned at holddown groove.
One end of described limiting plate is hinged on handle, and to clamp seat upper, and the lower end of hinged end is provided with rib, and its other end is fixed on handle by extension spring, and to clamp seat upper, described in be installed between block and rib and be installed with support plate.
The installation end of described handle is provided with draw-in groove, the upper end of described support plate is positioned at draw-in groove, the handheld terminal of described handle is the body of hollow, in described body, be provided with location-plate, in described location-plate, be provided with pilot hole, in described pilot hole, there is control lever to pass, on control lever on described location-plate, be set with spring, described spring upper end is spacing by the taper knob of the handheld terminal suit of handle, the lower end of described control lever is provided with adjustable plate, and the rear end of described support plate is rotatably installed on right fixed head by back stay.
Its principle is: in advance handle is arranged on to operating personnel and can operates on tractor, by control lever, controlling bracing wire moves, can drive adjustable plate position on support plate of bracing wire end, by teeth fixing and locking, in process, by draw-in groove, postive stop baffle is carried out spacingly, it can only be moved by the length direction between limiting plate; By handle, control limiting plate in the shift position on material direction control panel of executing of fixed head, can realize the movement of bracing wire, thus the rotation of drivening rod, and then drive rotating shaft to rotate, change the direction of discharge bucket spreading mouth; In use can regulate at any time the direction of the switch of spreading mouth, the size of load and discharging, and regulate control convenient, by the structural design of fixed mount, on the one hand bottom framework is fixedly connected with charging box fixed frame, be not easy distortion, its reasonable in design on the other hand, weight capacity is strong; In the discharge nozzle side of discharge bucket lower end, be provided with spreading mouth and sow rotating disk and coordinate, convenient realization sowed effect, simultaneously the bottom surface of discharge nozzle is skewback, and spreading mouth is arranged on the lower surface of skewback, and in use the material of its bottom can all be gone out from spreading mouth; In process, hand labor intensity is little, time saving and energy saving, has improved operating efficiency, can meet instructions for use.
Advantage of the present invention is:
Reasonable in design of the present invention, support supporting power is large, in use can regulate at any time the direction of the switch of spreading mouth, the size of load and discharging, and regulates control convenient, and hand labor intensity is little, time saving and energy saving, has improved operating efficiency.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is fixed rack structure schematic diagram.
Fig. 3 is discharging opening and baffle plate fit structure schematic diagram.
Fig. 4 is material seeding turntable structure schematic diagram.
Fig. 5 is discharge bucket structural representation.
Fig. 6 is discharge bucket and material seeding rotating disk fit structure schematic diagram.
Fig. 7 is handle control mechanism structural representation.
Fig. 8 is handle control mechanism partial structurtes schematic diagrames.
Embodiment
Referring to accompanying drawing, a kind of convenient seeding and fertilizer spreading machine of controlling that regulates, include fixed mount, charging box, blanking all, material seeding rotating disk 14, handle control mechanism and material seeding rotary drive mechanism, fixed mount includes bottom framework 1 and charging box fixed frame 2, fixing by front column 3 and back stay 4 between bottom framework 1 and charging box fixed frame 2, front column is provided with built-in beam 5 between 3 middle parts, is distributed with several installing holes on built-in beam 5, and front column 3 upper ends are hinged with respectively adjustable draw rod, on charging box fixed frame 2, charging box is installed, charging box includes casing 6, the side of casing 6 is provided with observation panel 7, 7 of observation panels are installed with the transparent plastic sheet 8 coordinating with observation panel 7, the bottom of casing 6 is taper, and be provided with discharging opening 9, the both sides of discharging opening 9 are provided with draw-in groove 10, in draw-in groove 10, be installed with movably baffle plate 11, baffle plate 11 is provided with the adjustment hole 12 coordinating with discharging opening 9, one end of baffle plate 11 is fixed on casing 6 bottoms by extension spring 46, the bracing wire that moves through the other end 20 of baffle plate 11 drives, the below of discharging opening 9 set up discharge bucket 13 and material seeding rotating disk 14, the upper surface circumferential distribution of material seeding rotating disk 14 has the blade 15 of inclination, in material seeding rotating disk 14, there is rotating shaft 16 to pass, rotating shaft 16 upper ends are installed with discharge bucket 13, the lower end of discharge bucket 13 is provided with discharge nozzle 17, on the sidewall of discharge nozzle 17, have spreading mouth 18, the bottom surface of discharge nozzle 17 is skewback, the incline direction of its skewback is towards spreading mouth 18, and spreading mouth 18 is communicated with skewback, discharge nozzle stretches into blade 15 middle parts of material seeding rotating disk 14, the rotation of material seeding rotating disk 14 is driven by motor, rotating shaft 16 lower ends are installed with connecting rod 19, and the end of connecting rod 19 is installed with bracing wire 20, and bracing wire 20 all has handle control mechanism to drive.
Adjustable draw rod includes pull bar fixed cover 21, the middle part of pull bar fixed cover 21 is provided with internal thread hole, and be combined with pull bar 22 by internal thread hole, pull bar 22 bottoms are provided with the external screw thread coordinating with pull bar fixed cover 21 internal thread holes, the end of pull bar 22 is respectively equipped with connecting hole 23, on front column 3, be installed with respectively fixedly ear 24, fixedly on ear 24, be respectively equipped with circular mounting hole, pull bar fixed cover 21 bottoms are provided with rotating shaft, rotating shaft and circular mounting hole are rotatably assorted, and the rotating shaft other end is by screwing nut fixing and locking; The bottom of material seeding rotating disk 14 is installed with fixed cover 25, the lower end of fixed cover 25 is provided with bevel gear 26, and the angular wheel 28 being connected with driven pulley 27 by bevel gear 26 coordinates, driven pulley 27 is driven by motor, between blade 15 bottoms and material seeding rotating disk 14, be provided with connecting plate 29, connecting plate 29 matches with the fixing lug boss 30 at material seeding rotating disk 14 middle parts.
Handle control mechanism includes base 31, base 31 is provided with a left side, right fixed head 32, 33, the upper surface of left fixed head 32 is arcwall face, and on arcwall face, be distributed with teeth 34, on left fixed head 32, be hinged with handle and clamp seat 35, handle clamps on seat 35 limiting plate 36 is installed, on limiting plate 36, there is the helical teeth coordinating with teeth on left fixed head 32 arcwall faces, handle clamps executing on material direction control panel on seat 35 and left fixed head 32 and is also provided with bracing wire fixed head 37, bracing wire fixed head 37 is controlled the discharging direction of spreading mouth by bracing wire and connecting rod, the outside of left fixed head 32 is provided with back stay by rotating shaft, the end of back stay is installed with support plate 38, the front end of support plate 38 is provided with curved end, on curved end, be distributed with teeth 34, the middle part of support plate 38 is rotatablely equipped with handle 39, adjustable plate 40 is installed on handle 39, adjustable plate 40 is provided with the barb coordinating with teeth on support plate curved end, on handle 39, be also installed with bracing wire, and by bracing wire, control the size of switch or the load of spreading mouth, handle drives is passed through respectively in the movement of limiting plate 36 and adjustable plate 40.
The middle part that handle clamps seat 35 is provided with holddown groove 41, and holddown groove 41 is installed on left fixed head 32 both sides, and the top of holddown groove 41 front ends is provided with block 42, and limiting plate 36 is positioned at holddown groove 41; One end of limiting plate 36 is hinged on handle and clamps on seat 35, and the lower end of hinged end is provided with rib 43, and its other end is fixed on handle by extension spring and clamps on seat 35, is installed between block 42 and rib 43 and is installed with support plate 38; The installation end of handle 39 is provided with draw-in groove, the upper end of support plate is positioned at draw-in groove, the handheld terminal of handle is the body of hollow, in body, be provided with location-plate, in location-plate, be provided with pilot hole, in pilot hole, have control lever 47 to pass, on control lever 47 on location-plate, be set with spring, spring upper end is spacing by the taper knob 45 of the handheld terminal suit of handle, and the lower end of control lever is provided with adjustable plate, and the rear end of support plate 38 is rotatably installed on right fixed head 33 by front tension bar 44.
Claims (6)
1. one kind conveniently regulates the seeding and fertilizer spreading machine of controlling, include fixed mount, charging box, blanking all, material seeding rotating disk, handle control mechanism and material seeding rotary drive mechanism, it is characterized in that: described fixed mount includes bottom framework and charging box fixed frame, between described bottom framework and charging box fixed frame, by front column and back stay, fix, described front column is provided with built-in beam between middle part, on described built-in beam, be distributed with several installing holes, described front column upper end is hinged with respectively adjustable draw rod, on described charging box fixed frame, charging box is installed, described charging box includes casing, the side of described casing is provided with observation panel, described observation oral area is installed with the transparent plastic sheet coordinating with observation panel, the bottom of described casing is taper, and be provided with discharging opening, the both sides of described discharging opening are provided with draw-in groove, in described draw-in groove, be installed with movably baffle plate, described baffle plate is provided with the adjustment hole coordinating with discharging opening, one end of described baffle plate is fixed on casing bottom by extension spring, the bracing wire that moves through the other end of described baffle plate drives, the below of described discharging opening set up discharge bucket and material seeding rotating disk, the upper surface circumferential distribution of described material seeding rotating disk has the blade of inclination, in described material seeding rotating disk, there is rotating shaft to pass, described rotating shaft upper end is installed with discharge bucket, the lower end of described discharge bucket is provided with discharge nozzle, on the sidewall of described discharge nozzle, have spreading mouth, the bottom surface of described discharge nozzle is skewback, the incline direction of its skewback is towards spreading mouth, and spreading mouth is communicated with skewback, described discharge nozzle stretches into the blade middle part of material seeding rotating disk, the rotation of described material seeding rotating disk is driven by motor, described rotating shaft lower end is installed with connecting rod, and the end of described connecting rod is installed with bracing wire, and described bracing wire all has handle control mechanism to drive, described handle control mechanism includes base, described base is provided with a left side, right fixed head, the upper surface of described left fixed head is arcwall face, and on arcwall face, be distributed with teeth, on described left fixed head, be hinged with handle and clamp seat, described handle clamps limiting plate is installed on seat, on described limiting plate, there is the helical teeth coordinating with teeth on left fixed head arcwall face, described handle clamps executing on material direction control panel on seat and left fixed head and is also provided with bracing wire fixed head, described bracing wire fixed head is controlled the discharging direction of spreading mouth by bracing wire and connecting rod, the outside of described left fixed head is provided with back stay by rotating shaft, the end of described back stay is installed with support plate, the front end of described support plate is provided with curved end, on described curved end, be distributed with teeth, the middle part of described support plate is rotatablely equipped with handle, on described handle, adjustable plate is installed, described adjustable plate is provided with the barb coordinating with teeth on support plate curved end, on described handle, be also installed with bracing wire, and by bracing wire, control the size of switch or the load of spreading mouth, handle drives is passed through respectively in the movement of described limiting plate and adjustable plate.
2. the seeding and fertilizer spreading machine that convenient adjusting according to claim 1 is controlled, it is characterized in that: described adjustable draw rod includes pull bar fixed cover, the middle part of described pull bar fixed cover is provided with internal thread hole, and be combined with pull bar by internal thread hole, described pull bar bottom is provided with the external screw thread coordinating with pull bar fixed cover internal thread hole, the end of described pull bar is respectively equipped with connecting hole, on described front column, be installed with respectively fixedly ear, on described fixedly ear, be respectively equipped with circular mounting hole, described pull bar fixed cover bottom is provided with rotating shaft, described rotating shaft and circular mounting hole are rotatably assorted, and the rotating shaft other end is by screwing nut fixing and locking.
3. the seeding and fertilizer spreading machine that convenient adjusting according to claim 1 is controlled, it is characterized in that: the bottom of described material seeding rotating disk is installed with fixed cover, the lower end of described fixed cover is provided with bevel gear, and the angular wheel being connected with driven pulley by bevel gear coordinates, described driven pulley is driven by motor, between described blade bottom and material seeding rotating disk, be provided with connecting plate, described connecting plate matches with the fixing lug boss at material seeding rotating disk middle part.
4. the seeding and fertilizer spreading machine that convenient adjusting according to claim 1 is controlled, it is characterized in that: the middle part that described handle clamps seat is provided with holddown groove, described holddown groove is installed on left fixed head both sides, and the top of described holddown groove front end is provided with block, and described limiting plate is positioned at holddown groove.
5. the seeding and fertilizer spreading machine that convenient adjusting according to claim 1 is controlled, it is characterized in that: one end of described limiting plate is hinged on handle and clamps on seat, and the lower end of hinged end is provided with rib, its other end is fixed on handle by extension spring, and to clamp seat upper, described in be installed between block and rib and be installed with support plate.
6. the seeding and fertilizer spreading machine that convenient adjusting according to claim 1 is controlled, it is characterized in that: the installation end of described handle is provided with draw-in groove, the upper end of described support plate is positioned at draw-in groove, the handheld terminal of described handle is the body of hollow, in described body, be provided with location-plate, in described location-plate, be provided with pilot hole, in described pilot hole, there is control lever to pass, on control lever on described location-plate, be set with spring, described spring upper end is spacing by the taper knob of the handheld terminal suit of handle, the lower end of described control lever is provided with adjustable plate, the rear end of described support plate is rotatably installed on right fixed head by back stay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210185424.0A CN102742399B (en) | 2012-06-06 | 2012-06-06 | Sowing and fertilizer application machine with characteristic of convenient adjustment control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210185424.0A CN102742399B (en) | 2012-06-06 | 2012-06-06 | Sowing and fertilizer application machine with characteristic of convenient adjustment control |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102742399A CN102742399A (en) | 2012-10-24 |
| CN102742399B true CN102742399B (en) | 2014-12-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210185424.0A Expired - Fee Related CN102742399B (en) | 2012-06-06 | 2012-06-06 | Sowing and fertilizer application machine with characteristic of convenient adjustment control |
Country Status (1)
| Country | Link |
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| CN (1) | CN102742399B (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103190234A (en) * | 2013-04-12 | 2013-07-10 | 池上剑 | Fertilizer applicator |
| CN103404282A (en) * | 2013-08-18 | 2013-11-27 | 罗丙伍 | Motor drive device of seeding and fertilizing machine capable of adjusting width direction and blanking quantity |
| CN103404276B (en) * | 2013-08-19 | 2016-04-20 | 罗丙伍 | The electronic seeding and fertilizer spreading machine of a kind of conveniently adjusted width direction and discharge quantity |
| CN103477775B (en) * | 2013-09-09 | 2015-07-08 | 台州卓泰工贸有限公司 | Automatic stirring and blanking fertilizer applicator driven by stepping type travel mechanism |
| CN103444337B (en) * | 2013-09-12 | 2015-06-24 | 王卫真 | Electric fertilizer applying apparatus and paddy field siding plate type movable mechanism |
| CN104115596A (en) * | 2014-07-16 | 2014-10-29 | 安徽省农业科学院农业工程研究所 | Material storing box of multifunctional sowing and fertilizer-spraying machine and outlet structure thereof |
| CN104081916A (en) * | 2014-07-16 | 2014-10-08 | 安徽省农业科学院农业工程研究所 | Adjustable fixing bracket structure of multifunctional seeding and fertilizer throwing machine |
| CN105144948B (en) * | 2015-10-10 | 2017-11-21 | 南漳县恒达机械制造销售有限公司 | Fertilizer applicator baiting control device |
| CN105144950B (en) * | 2015-10-10 | 2018-01-09 | 南漳县恒达机械制造销售有限公司 | Fertilizer applicator transmission mechanism |
| CN105144947B (en) * | 2015-10-10 | 2017-04-05 | 南漳县恒达机械制造销售有限公司 | Fertilizer applicator |
| CN106612829A (en) * | 2016-01-27 | 2017-05-10 | 深圳高科新农技术有限公司 | Broadcast sowing device and flight broadcast sowing device |
| CN106358530B (en) * | 2016-08-31 | 2018-09-28 | 云南滇玉种业有限公司 | A kind of intelligence corn seeding machinery device |
| CN106171181B (en) * | 2016-08-31 | 2018-09-28 | 云南滇玉种业有限公司 | A kind of movable-type intelligent corn seeding machinery device |
| CN112544189B (en) * | 2020-12-08 | 2022-06-21 | 农业农村部南京农业机械化研究所 | Multifunctional organic fertilizer spreader |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2672259A (en) * | 1951-10-05 | 1954-03-16 | Joseph H Hobgood | Combined top dresser and sower |
| DD254844A3 (en) * | 1983-11-24 | 1988-03-16 | Vyzk Ustav Zemedelske Techniky | DEVICE FOR CONTROLLING THE BUNKERS OF SAW MACHINES |
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| CN201131152Y (en) * | 2007-11-12 | 2008-10-15 | 姚苏友 | Centrifugal type seed-fertilizer spreaders |
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| Publication number | Publication date |
|---|---|
| CN102742399A (en) | 2012-10-24 |
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