CN201213368Y - Precision sowing disk with adjustable swinging block - Google Patents
Precision sowing disk with adjustable swinging block Download PDFInfo
- Publication number
- CN201213368Y CN201213368Y CNU2008201037605U CN200820103760U CN201213368Y CN 201213368 Y CN201213368 Y CN 201213368Y CN U2008201037605 U CNU2008201037605 U CN U2008201037605U CN 200820103760 U CN200820103760 U CN 200820103760U CN 201213368 Y CN201213368 Y CN 201213368Y
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- cam
- dish
- centering block
- seeding
- seed
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Abstract
The utility model provides an accurate seeding tray with an adjustable swing block, which is used on agricultural machinery, namely a precision seeder. The seeding tray is characterized in that a bearing support disc is arranged on a shaft; adjustable seed metering devices are arranged on a hole forming device and are connected together by use of pinboards so as to form a ring body; the ring body is arranged between a bearing side cover and a feeding side cover by use of bolts; a fixed disc fixedly arranged on a seed tray shaft is arranged between the feeding side cover and the shaft; a cam connecting disc is arranged on an inner shaft sleeve of the bearing support disc, and is connected with a cam, a toothed board and a toothed board adjustment seat; the fixed disc is provided with a seed inlet hole and a seed receiving pipe; a seed cleaning board and the swing block capable of swinging are arranged on a seed metering device seat; the swing block is provided with a seed filling hole and a plug screw; a swing block shaft and a return spring are arranged between the swing block and the seed metering device seat; and a roller is fixed on the swing block shaft. During operation, the roller controls the seed filling hole on the swing block through the cam to pass the seed cleaning board to and fro and enter a seed storage cavity or to be communicated with seeding holes of the pinboards. The seeding tray not only can accurately adjust needed seeding quantity and planting distance, but also can reverse, thereby improving seeding quality and reducing production cost.
Description
One, technical field:
The utility model relates to agricultural seeder machinery, is a kind of adjustable centering block Precision Seeding dish.
Two, background technology:
Along with the continuous development of China's agriculture production technology, wideling popularize and seed day by day at high price of new crop varieties requires more and more higher to seeding machinary versatility, adaptability and accuracy.Normally used common displacement type seeding unit, be difficult to precision drilling on request, another kind of mechanical precision drilling dish, though energy precision drilling, but, can not adapt to the needs of the precision drilling of multiple spacing in the rows, and want to sow different spacing in the rows seeds because spacing in the rows is fixed, the kind dish that need join different spacing in the rows, the manufacturing cost costliness.
Three, summary of the invention:
In view of the problem of above-mentioned existence, the utility model is to design a kind ofly can adjust to the adjustable centering block Precision Seeding dish of required seeding quantity and spacing in the rows accurately according to the different cultivars of sowing crop to kind of the different requirements of amount spacing in the rows.It not only can also can be adjusted to required spacing in the rows, and can reverse as required easily with same adjustable centering block Precision Seeding dish precision seeding.
The utility model realizes that by following measure a kind of adjustable centering block Precision Seeding dish is characterized in that: comprise indenting tool, supporting attic base, advance kind of a side cover, adjustable seeding unit, cam and connect disc assembly, seed disk shaft, price fixing, ratchet, ratchet spring; Indenting tool by moving duckbilled, decide duckbilled, joint pin, hinge, duckbilled spring and plugboard and form, adjustable seeding unit by the seeding unit seat, plant plate, centering block, swing-block shaft, obstruction screw, back-moving spring, roller clearly and form; Cam connect disc assembly by tooth plate adjustment seat, tooth plate frame, tooth plate, cam connect dish, cam is formed; The supporting attic base is installed on the seed disk shaft, the plugboard of indenting tool is provided with the connecting hole of forming different spacing in the rows, and adjustable seeding unit is installed, link together and form Artenkreis with the plugboard of indenting tool, with bolt Artenkreis is installed in supporting attic base and advancing between kind of the side cover, on Artenkreis, is fixed with one or more indenting tool; Advancing price fixing is arranged between kind of side cover and the seed disk shaft and be fixedly mounted on the seed disk shaft, the nut that connects with sower is equipped with in the outer end of seed disk shaft; On supporting attic base internal axle sleeve, cam is housed also and connects dish, cam connects and is connected with cam and tooth plate on the dish, tooth plate is adjusted seat, tooth plate frame, by price fixing, advance kind of a side cover, adjustable seeding unit, cam and connect dish and constitute and deposit kind of a chamber, into kind of hole is arranged on price fixing, and is advancing on kind of the hole inoculated tube is installed; Duckbilled on each indenting tool with the lower seed hole on the corresponding plugboard communicate, and each lower seed hole communicates with the centering block of adjustable seeding unit; The seeding unit seat is provided with plants plate clearly, in the centering block that can swing is housed, centering block is provided with and fills kind of a type hole, fills to be provided with dismountable obstruction screw in kind of the type hole, is used for adjusting the single two grains of sowing; Between centering block and the seeding unit seat swing-block shaft and back-moving spring are housed, are fixed with roller on the swing-block shaft; The centering block of adjustable seeding unit with deposit kind of a chamber and communicate; Roller back and forth enters and deposits kind of chamber or communicate with the plugboard lower seed hole through the clear plate of planting by kind of the type hole of filling on the cam control centering block, connects at cam and is provided with elasticity tooth plate and tooth plate frame on the dish, and adjust seat with tooth plate and adjust the location; Should anti-reversing gearbox be to connect at cam to be provided with ratchet on the dish, match, reset with ratchet spring with limited bayonet on the price fixing.
Described adjustable centering block Precision Seeding dish feature is: its indenting tool is pressing plate side's duckbilled indenting tool or pressing plate point duckbilled indenting tool, the keying of the moving duckbilled of indenting tool adopts the dead-weight pressing plate to open and close or elastomer opens and closes or cam body regularly opens and closes, wherein, elastomer can be torsion spring, stage clip, extension spring, tower spring, leaf spring or rubber; Decide duckbilled and can be provided with catch, catch can connect with common hinge, and the flap of also available special dual-purpose one substitutes, and the middle pin hole of hinge can default, and is used to install the duckbilled spring.
Described adjustable centering block Precision Seeding dish feature is: its plugboard is for adopting clamped-in style, compression type, bolt, pin, insertedly adjusting fixed installation, the installation check hole that plugboard is provided with can default, when adjusting spacing in the rows, with increase and decrease indenting tool and being installed on the corresponding grafting plate hole position, or directly adjustable seeding unit is contained on the one Artenkreis of different spacing in the rows.
Described adjustable centering block Precision Seeding dish feature is: it is the split combination or whole with cam that the cam of installing on its supporting attic base connects dish; Cam is reeded.
Described adjustable centering block Precision Seeding dish feature is: its cam connects and coils the tooth plate of going up setting is with elastomeric material or hard-wired with the adjustment of immobilization material elastic construction; Tooth plate can be arranged on that cam connects that dish is gone up or price fixing on; Tooth plate be one or split, the tooth plate frame is housed on the tooth plate or directly is connected tooth plate and adjust on the seat.
Described adjustable centering block Precision Seeding dish feature is: being connected between its roller and the swing-block shaft is dismountable, or one, and substitutes roller with arc surface.
Described adjustable centering block Precision Seeding dish feature is: the back-moving spring of its centering block is located between centering block and the seeding unit seat, or is located between swing-block shaft and the seeding unit seat, or is located between centering block and the plugboard, and the fixed head of planting clearly on the plate can default.
Described adjustable centering block Precision Seeding dish feature is: its ratchet is located at cam and connects on the dish, and price fixing is provided with bayonet socket or ratchet is located on the price fixing, and cam connects dish and is provided with Ka Tai.
Described adjustable centering block Precision Seeding dish feature is: its price fixing is provided with inspection door, also inspection door can be defaulted.
Described adjustable centering block Precision Seeding dish feature is: its bearing adopts rolling bearing or sliding bearing, and the bearing block of bearing and supporting side cover are one and split.
The utility model is simple in structure, easily manufactured, as long as simply make up or adjust, just can adjust to required seeding quantity and corresponding spacing in the rows conveniently, accurately, and can reverse according to the different requirements of sowing crop.
Use this adjustable centering block Precision Seeding dish, can improve seeding quality, reduce labor intensity, and can reduce production costs, improve reliability.
Four, description of drawings:
Accompanying drawing 1 is the front view of the adjustable centering block Precision Seeding dish of the utility model embodiment;
Accompanying drawing 2 is the left view of the adjustable centering block Precision Seeding dish of the utility model embodiment;
Accompanying drawing 3 is the indenting tool front view of the utility model embodiment;
Accompanying drawing 4 is the indenting tool vertical view of the utility model embodiment;
Accompanying drawing 5 is the adjustable seeding unit front view of the utility model embodiment;
Accompanying drawing 6 is the adjustable seeding unit left view of the utility model embodiment;
Accompanying drawing 7 is the adjustable seeding unit vertical view of the utility model embodiment;
Accompanying drawing 8 connects the disc assembly front view for the cam of the utility model embodiment;
Accompanying drawing 9 connects the disc assembly left view for the cam of the utility model embodiment;
Coding in the accompanying drawing is respectively: advance kind of a side cover, 2. price fixing, 3. inoculated tube, 4. nut 1., 5. cam connects disc assembly, 6. inspection door, 7. bolt, 8. indenting tool, 9. deposit kind of a chamber, 10. seed disk shaft, 11. ratchet springs, 12. ratchet, 13. Artenkreis, 14. supporting attic bases, 15. adjustable seeding unit, 16. moving duckbilleds, 17. duckbilled springs, 18. joint pin, 19. hinges, 20. plugboards, 21. decide duckbilled, 22. lower seed holes, 23. installation check holes, 24. roller, 25. seeding unit seats, 26. centering blocks, 27. the obstruction screw, 28. swing-block shafts, 29. back-moving springs, 30. fixed head, 31. fill kind of a type hole, the 32. clear plates of planting, 33. tooth plate is adjusted seat, 34. tooth plates, 35. cams, 36. the tooth plate frame, 37. cams connect dish, centering block Precision Seeding dish work rotation direction that A. is adjustable.
Five, embodiment:
As Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, shown in Figure 9, a kind of adjustable centering block Precision Seeding dish is characterized in that: comprise indenting tool 8, supporting attic base 14, advance kind of side cover 1, adjustable seeding unit 15, cam and connect disc assembly 5, seed disk shaft 10, price fixing 2, ratchet 12, ratchet spring 11; Indenting tool 8 by moving duckbilled 16, decide duckbilled 21, joint pin 18, hinge 19, duckbilled spring 17 and plugboard 20 and form, adjustable seeding unit 15 by seeding unit seat 25, clearly plant plate 32, centering block 26, swing-block shaft 28, stop up screw 27, back-moving spring 29, roller 24 and form; Cam connect disc assembly 5 by tooth plate adjustment seat 33, tooth plate frame 36, tooth plate 34, cam connect dish 37, cam 35 forms; Supporting attic base 14 is installed on the seed disk shaft 10, the plugboard 20 of indenting tool 8 is provided with the connecting hole of forming different spacing in the rows, and adjustable seeding unit 15 is installed, link together and form Artenkreis 13 with the plugboard 20 of indenting tool 8, with bolt 7 Artenkreis 13 is installed in supporting attic base 14 and advancing between kind of the side cover 1, on Artenkreis 13, is fixed with one or more indenting tool 8; Advancing price fixing 2 is arranged between kind of side cover 1 and the seed disk shaft 10 and be fixedly mounted on the seed disk shaft 10, the nut 4 that connects with sower is equipped with in the outer end of seed disk shaft 10; On supporting attic base 14 internal axle sleeves, cam is housed also and connects dish 37, cam connects that dish is connected with cam 35 and tooth plate 34 on 37, tooth plate is adjusted seat 33, tooth plate frame 36, by price fixing 2, advance kind of side cover 1, adjustable seeding unit 15, cam and connect dish 37 and constitute and deposit kind of chamber 9, into kind of hole is arranged on price fixing 2, and advancing inoculated tube 3 is installed on kind of the hole; Duckbilled on each indenting tool 8 with the lower seed hole 22 on the corresponding plugboard 20 communicate, and each lower seed hole 22 communicates with the centering block 26 of adjustable seeding unit 15; Seeding unit seat 25 is provided with and plants plate 32 clearly, in the centering block 26 that can swing is housed, centering block 26 is provided with and fills kind of a type hole 31, fills to be provided with dismountable obstruction screw 27 in kind of the type hole 31, is used for adjusting the single two grains of sowing; Swing-block shaft 28 and back-moving spring 29 are housed between centering block 26 and the seeding unit seat 25, are fixed with roller 24 on the swing-block shaft 28; The centering block 26 of adjustable seeding unit 15 with deposit kind of chamber 9 and communicate; Roller 24 back and forth enters and deposits kind of chamber 9 or communicate with plugboard 20 lower seed holes 22 through the clear plate 32 of planting by kind of the type hole 31 of filling on the cam 35 control centering blocks 26, connects on the dish 37 at cam and is provided with elasticity tooth plate 34 and tooth plate frame 36, and adjust seat 33 with tooth plate and adjust the location; Should anti-reversing gearbox be to connect on the dish 37 at cam to be provided with ratchet 12, match, reset with ratchet spring 11 with limited bayonet on the price fixing 2.
During work, adjustable centering block Precision Seeding dish vertically is fixed on the sower by seed disk shaft 10 and nut 4, when seed is deposited in kind of the chamber 9 by inoculated tube 3 inflows, because the restriction of inoculation mouth makes seed keep certain height in depositing kind of chamber 9.When roll by the work of A shown in figure and figure rotation direction in the face of land, adjustable centering block Precision Seeding rim, by swing-block shaft 28 centering block 26 is swung in depositing kind of chamber 9 during roller 24 process cams 35, and make and fill kind of a type hole 31 and expose, seed charges in kind of the type hole 31 by the tangential force of deadweight and motion and the booster action by tooth plate 34, adjustable centering block Precision Seeding dish continues to roll, when roller 24 passes through cam 35 grooves, make centering block 26 to 22 swings of plugboard 20 lower seed holes, the seed that fills in kind of the type hole 31 cleans unnecessary seed by clear kind of plate 32 and tooth plate 34 time.For guaranteeing to fill the reliability of planting, cam 35 is provided with more than one groove, control by cam 35, make on the centering block 26 fill kind of type hole 31 through repeatedly fill kind and clear the kind after, rear portion at cam 35 breaks away from, filling the place that communicates with plugboard 20 lower seed holes 22, kind of type hole 31 with centering block 26 is spacing, and the impulsive force when breaking away from cam 35 by roller 24, seed is launched.Along with the rolling that adjustable centering block Precision Seeding dish continues, seed moves to adjustable centering block Precision Seeding dish after the top, and seed enters seed in the duckbilled of indenting tool 8 by plugboard 20 lower seed holes 22 under the effect of deadweight.Simultaneously the duckbilled on the indenting tool 8 inserts the face of land, during planting after plastic covered on mulch film broken hole, and under the effect of moving duckbilled 16 pressing plates, open duckbilled, seed is broadcast in the soil.Continue motion, moving duckbilled 16 is closed duckbilled under the effect of deadweight and duckbilled spring 17, enters next working cycles, and whole cave formula seeding operation has just been finished in circulation and so forth.
When need sowings simple grain, kind of type hole 31 usefulness of filling on each centering block 26 can be stopped up that a screw 27 is stifled to be gone up one of them and get final product, when the two grain of sowing, the obstruction screws 27 whole taking-ups of filling in kind of the type hole 31 on the centering block 26 are got final product.
When needs are adjusted spacing in the rows, dismantle plugboard 20 attachment screws of indenting tool 8, increase or reduce indenting tool 8 and the corresponding adjustable seeding unit 15 that connects on the Artenkreis 13, and with plugboard 20 attachment screws pack into plugboard 20 corresponding hole site fix form new Artenkreis 13 after, the adjustable centering block Precision Seeding dish that is assembled into corresponding spacing in the rows again gets final product.Increase indenting tool 8 spacing in the rows and reduce, reduce indenting tool 8 spacing in the rows and increase.
In order to prevent that adjustable centering block Precision Seeding dish from reversing part of damage, the utility model embodiment connects at cam and is provided with ratchet 12 on the dish 37 and matches with bayonet socket on the price fixing 2, resets with ratchet spring 11.During reverse, price fixing 2 bayonet sockets are with after ratchet 12 inclined-planes contact, ratchet 12 is depressed, cam connects dish 37 and together rotates with Artenkreis 13, and cam 35 mechanisms are inoperative, when pressing the operative orientation rotation again, when ratchet 12 slides to price fixing 2 bayonet socket places, ratchet 12 snaps in price fixing 2 bayonet sockets and location under the effect of ratchet spring 11, recover normal operating conditions.
On price fixing 2, be provided with in the present embodiment for the transparent inspection door of observing and the cleaning seed is used 6, on plugboard 20, be provided with the installation check hole 23 of installing and checking, installed fixed head 30 additional clear the kind on the plate 32, to prevent planting coming off of plate 32 clearly.
Claims (10)
1. adjustable centering block Precision Seeding dish is characterized in that: comprise indenting tool, supporting attic base, advance kind of a side cover, adjustable seeding unit, cam connect disc assembly, seed disk shaft, price fixing, ratchet, ratchet spring; Indenting tool by moving duckbilled, decide duckbilled, joint pin, hinge, duckbilled spring and plugboard and form, adjustable seeding unit by the seeding unit seat, plant plate, centering block, swing-block shaft, obstruction screw, back-moving spring, roller clearly and form; Cam connect disc assembly by tooth plate adjustment seat, tooth plate frame, tooth plate, cam connect dish, cam is formed; The supporting attic base is installed on the seed disk shaft, the plugboard of indenting tool is provided with the connecting hole of forming different spacing in the rows, and adjustable seeding unit is installed, link together and form Artenkreis with the plugboard of indenting tool, with bolt Artenkreis is installed in supporting attic base and advancing between kind of the side cover, on Artenkreis, is fixed with one or more indenting tool; Advancing price fixing is arranged between kind of side cover and the seed disk shaft and be fixedly mounted on the seed disk shaft, the nut that connects with sower is equipped with in the outer end of seed disk shaft; On supporting attic base internal axle sleeve, cam is housed also and connects dish, cam connects and is connected with cam and tooth plate on the dish, tooth plate is adjusted seat, tooth plate frame, by price fixing, advance kind of a side cover, adjustable seeding unit, cam and connect dish and constitute and deposit kind of a chamber, into kind of hole is arranged on price fixing, and is advancing on kind of the hole inoculated tube is installed; Duckbilled on each indenting tool with the lower seed hole on the corresponding plugboard communicate, and each lower seed hole communicates with the centering block of adjustable seeding unit; The seeding unit seat is provided with plants plate clearly, in the centering block that can swing is housed, centering block is provided with and fills kind of a type hole, fills to be provided with dismountable obstruction screw in kind of the type hole, is used for adjusting the single two grains of sowing; Between centering block and the seeding unit seat swing-block shaft and back-moving spring are housed, are fixed with roller on the swing-block shaft; The centering block of adjustable seeding unit with deposit kind of a chamber and communicate; Roller back and forth enters and deposits kind of chamber or communicate with the plugboard lower seed hole through the clear plate of planting by kind of the type hole of filling on the cam control centering block, connects at cam and is provided with elasticity tooth plate and tooth plate frame on the dish, and adjust seat with tooth plate and adjust the location; Should anti-reversing gearbox be to connect at cam to be provided with ratchet on the dish, match, reset with ratchet spring with limited bayonet on the price fixing.
2. according to the described adjustable centering block Precision Seeding dish feature of claim 1 be: its indenting tool is pressing plate side's duckbilled indenting tool or pressing plate point duckbilled indenting tool, the keying of the moving duckbilled of indenting tool adopts the dead-weight pressing plate to open and close or elastomer opens and closes or cam body regularly opens and closes, wherein, elastomer can be torsion spring, stage clip, extension spring, tower spring, leaf spring or rubber; Decide duckbilled and can be provided with catch, catch can connect with common hinge, and the flap of also available special dual-purpose one substitutes, and the middle pin hole of hinge can default, and is used to install the duckbilled spring.
3. according to the described adjustable centering block Precision Seeding dish feature of claim 1 be: its plugboard is for adopting clamped-in style, compression type, bolt, pin, insertedly adjusting fixed installation, the installation check hole that plugboard is provided with can default, when adjusting spacing in the rows, with increase and decrease indenting tool and being installed on the corresponding grafting plate hole position, or directly adjustable seeding unit is contained on the one Artenkreis of different spacing in the rows.
4. according to the described adjustable centering block Precision Seeding dish feature of claim 1 be: it is the split combination or whole with cam that the cam of installing on its supporting attic base connects dish; Cam is reeded.
5. according to the described adjustable centering block Precision Seeding dish feature of claim 1 be: its cam connects and coils the tooth plate of going up setting is with elastomeric material or hard-wired with the adjustment of immobilization material elastic construction; Tooth plate can be arranged on that cam connects that dish is gone up or price fixing on; Tooth plate be one or split, the tooth plate frame is housed on the tooth plate or directly is connected tooth plate and adjust on the seat.
6. according to the described adjustable centering block Precision Seeding dish feature of claim 1 be: being connected between its roller and the swing-block shaft is dismountable, or one, and substitutes roller with arc surface.
7. according to the described adjustable centering block Precision Seeding dish feature of claim 1 be: the back-moving spring of its centering block is located between centering block and the seeding unit seat, or is located between swing-block shaft and the seeding unit seat, or is located between centering block and the plugboard, and the fixed head of planting clearly on the plate can default.
8. according to the described adjustable centering block Precision Seeding dish feature of claim 1 be: its ratchet is located at cam and connects on the dish, and price fixing is provided with bayonet socket or ratchet is located on the price fixing, and cam connects dish and is provided with Ka Tai.
9. according to the described adjustable centering block Precision Seeding dish feature of claim 1 be: its price fixing is provided with inspection door, also inspection door can be defaulted.
10. according to the described adjustable centering block Precision Seeding dish feature of claim 1 be: its bearing adopts rolling bearing or sliding bearing, and the bearing block of bearing and supporting side cover are one and split.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201037605U CN201213368Y (en) | 2008-07-10 | 2008-07-10 | Precision sowing disk with adjustable swinging block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201037605U CN201213368Y (en) | 2008-07-10 | 2008-07-10 | Precision sowing disk with adjustable swinging block |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201213368Y true CN201213368Y (en) | 2009-04-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201037605U Expired - Fee Related CN201213368Y (en) | 2008-07-10 | 2008-07-10 | Precision sowing disk with adjustable swinging block |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201213368Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108353579A (en) * | 2018-03-14 | 2018-08-03 | 河北永发鸿田农机制造有限公司 | Duck-beak type seeder |
| CN109089482A (en) * | 2018-08-25 | 2018-12-28 | 许明 | A kind of direct insertion maise seeder units of duplicate rows simple grain |
| CN109328540A (en) * | 2018-11-02 | 2019-02-15 | 宜宾金宇恒丰农业科技有限公司 | A kind of plantation assistor used for vegetable greenhouse |
| CN109952836A (en) * | 2019-04-08 | 2019-07-02 | 董兆伟 | A kind of rolling type sowing implement |
-
2008
- 2008-07-10 CN CNU2008201037605U patent/CN201213368Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108353579A (en) * | 2018-03-14 | 2018-08-03 | 河北永发鸿田农机制造有限公司 | Duck-beak type seeder |
| CN109089482A (en) * | 2018-08-25 | 2018-12-28 | 许明 | A kind of direct insertion maise seeder units of duplicate rows simple grain |
| CN109328540A (en) * | 2018-11-02 | 2019-02-15 | 宜宾金宇恒丰农业科技有限公司 | A kind of plantation assistor used for vegetable greenhouse |
| CN109952836A (en) * | 2019-04-08 | 2019-07-02 | 董兆伟 | A kind of rolling type sowing implement |
| CN109952836B (en) * | 2019-04-08 | 2023-11-28 | 董兆伟 | Rolling seeder |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Chen Lifan Document name: Notification to Pay the Fees |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090401 Termination date: 20150710 |
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| EXPY | Termination of patent right or utility model |