CN204443045U - Device is reseeded in the stepping of rape seed helix tube type - Google Patents
Device is reseeded in the stepping of rape seed helix tube type Download PDFInfo
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- CN204443045U CN204443045U CN201420711334.5U CN201420711334U CN204443045U CN 204443045 U CN204443045 U CN 204443045U CN 201420711334 U CN201420711334 U CN 201420711334U CN 204443045 U CN204443045 U CN 204443045U
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Abstract
The utility model belongs to agricultural machinery technological field, is specifically related to the stepping of a kind of rape seed helix tube type and reseeds device.This device reseeds control module composition primarily of helix tube type re-seeding device, stepping; Helix tube type re-seeding device is primarily of formations such as feed drum, helical pipe, tubular kind case, looping pit baffle plate, end cap, feed shaft, grain conductors; Stepping is reseeded control module and is made up of DC stepper motor, input circuit, pulse generation control circuit, counter, signal circuit, drive circuit.When control system receives broadcast leakage signal, start driving stepper motor helix tube type re-seeding device rotation respective angles according to broadcast leakage signal pulse quantity and realize reseeding.The broadcast leakage real-time detection method of the utility model and precise rape seeding device supports the use, can reseed in time, accurately, the difficult problem such as solve broadcast leakage problem that rape precision sower produces and mechanical type re-seeding device nibs easily blocks, seed percentage of damage is high, reduce the later stage to fill the gaps with seedlings labour cost, enhance productivity and seeding quality.
Description
Technical field
The utility model belongs to agricultural machinery technological field, is specifically related to the stepping of a kind of rape seed helix tube type and reseeds device.
Background technology
The advantages such as Pneumatic rape precise combined direct seeder has saving seed manure, and operating efficiency is high, and seedling effect is good, precise seeder is the core component of seed-sowing machine.On the one hand, due to the operating environment of field complexity, and to lack kind as planted case appears in the precision sower course of work, grain tube blocking, seeding unit break down etc., and defect all can cause a line or number row to produce " disconnected bar " broadcast leakage phenomenon, has a strong impact on crop yield; On the other hand, at present improvement is optimized to precise seeder performance and is also in conceptual phase, be difficult to accomplish to avoid broadcast leakage completely at practical application seeding process.At present, Combined rape precision direct seeder detects broadcast leakage just warning reminding in seeding operation process, and driver carries out parking checking continually, directly will reduce operating efficiency.In addition, because rape seed particle diameter is little, not easily discover, after crop emerges, just find broadcast leakage in seeding process, the later stage manually reseeds not only reduction efficiency and also affects farming season adversely.
Nowadays, carry out the technical scheme of automatic makeup kind after occurring about broadcast leakage for crops such as corn, wheat, potatos, existing correlative study person furthers investigate reseeding device.Because mechanical seed sowing device structure is simple, good stability during intermittent work, reliability is high, therefore great majority all adopt mechanical type re-seeding device.But rape seed belongs to small particle diameter seed, quality is light, cracky, oil yield are high, easily causes nibs to block, reseeds according to pneumatic type rape re-seeding device, then strengthen structural elements complexity, increases cost.
For above problem, the utility model proposes the stepping of a kind of rape seed helix tube type and reseed device, the precise rape seeding device broadcast leakage real-time detection method developed is coordinated to use, this helix tube type re-seeding device make full use of the mobility of rape seed and automatically to fill kind by gravity, screwed pipe protects kind, defeated kind and even charge seed, solve mechanical type re-seeding device and easily cause the difficult problems such as nibs blocks, seed breakage rate is high, apply stepping simultaneously and reseed drive system, can control rate of after culture, and can reseed in time, accurately, there is the features such as structure is simple, cost is low.
Summary of the invention
The purpose of this utility model is to provide the stepping of a kind of rape seed helix tube type and reseeds device, to solve the broadcast leakage problem that in the rape direct seeder course of work, seeding unit produces, reseeds in time, accurately, reduces labor cost, improves crop yield.
For achieving the above object, device is reseeded in the rape seed helix tube type stepping that the utility model provides, and it is characterized in that: reseed control module by helix tube type re-seeding device and stepping and form;
Described stepping reseed control module comprise DC stepper motor, in order to respond broadcast leakage detection signal input circuit, in order to produce, the pulse generation control circuit of adjustment reference pulse, be counter, the signal circuit being applicable to the control signal of motor in order to output and in order to drive the drive circuit of DC stepper motor that instruction count reference pulse signal in order to broadcast leakage signal; Described input circuit and pulse generation control circuit connect with counter respectively, and described counter also connects with signal circuit, and the power shaft of described signal circuit, drive circuit and DC stepper motor connects successively;
Described helix tube type re-seeding device comprises feed drum and is provided with seeding shaft support, described feed drum is set on feed shaft, feed shaft one end is connected with motor output shaft by shaft coupling, and the other end of feed shaft is connected with sliding bearing, and described sliding bearing is fixedly mounted on support; It is characterized in that: described feed drum outer wall is provided with multiple helical pipe, the two ends of described helical pipe are respectively equipped with fills kind of mouth and mouth of charging seed; One end of described feed drum is provided with tube end plate; Described tube end plate is provided with hole of charging seed;
Tubular kind case is provided with in described feed drum; One end of described tubular kind case is fixedly connected with tube end plate, and the other end of tubular kind case is installed with case lid, and the sidewall of described tubular kind case is provided with feed outlet; Also be provided with the port lid matched with hole of charging seed;
Also comprise the looping pit baffle plate being provided with multiple seed-filling hole, described looping pit baffle plate is fixedly connected with one end of feed drum, and described multiple seed-filling hole connects with kind of the mouth that fills of each helical pipe respectively;
Also comprise end cap, described end cap encloses structure by cover plate and end cap wall and forms, and described end cap wall is fixedly connected with looping pit baffle plate;
Described support is also installed with grain conductor, and described grain conductor is positioned at the below of mouth of charging seed.
Preferably, described feed drum inwall is being obliquely installed in frustum and larger near the frustum cross section of looping pit baffle plate side; Described looping pit baffle surface is also being obliquely installed of frustum and the frustum cross section of close end cap side is larger; Described end cap inwall is also being obliquely installed in frustum and the frustum cross section of close looping pit baffle plate side is larger.
Further, the gradient of described feed drum inwall is 5 °; The gradient of described looping pit baffle surface is 10 °, and the thickness of looping pit baffle plate is 5mm; The gradient of described end cap inwall is 10 °, and the degree of depth of end cap is 10mm.
Further, the distance between described cover plate and looping pit baffle plate is 10mm.
Further, described helical pipe is provided with 10 ~ 20, and helical pipe is right-spiral, and the cross section of helical pipe is circular, and the diameter of helical pipe is 5 ~ 9mm.
Further, the model of described DC stepper motor is SYNTRON28BYG250CK; Described pulse generation control circuit is made up of NE555 oscillator, jumper cap; Described counter is made up of 74HC40103; Described drive circuit is made up of L298N chip.
Concrete advantage of the present utility model is as follows:
1, helix tube type re-seeding device of the present utility model make full use of the mobility of rape seed and automatically to fill kind by gravity, screwed pipe protects kind, defeated kind and even charge seed, and there is not extruding, seed of milling in whole process, the phenomenon such as line clogging, seed can not be caused damaged.
2, helix tube type re-seeding device of the present utility model integrates kind of case and seeding unit, and structure is simple, and easy for installation, cost is low, and operation is reliable.
3, the utility model is by the kind face height in conservative control kind case, kinds of bank deposits district, and rate of after culture can regulable control, realizes essence amount and reseeds.
4, driving control system of reseeding of the present utility model can realize the width of control signal or the variable adjustment of pulse number by the wiring combination changing jumper cap, and adjustable range is wide, accurately controls electric machine rotation angle.
5, the utility model application rape seed helix tube type re-seeding device and the drive system using step jointly complete rape seed and reseed operation process, and working stability is reliable, can reseed in time, exactly.
Accompanying drawing explanation
Fig. 1 is the structural representation that device is reseeded in the stepping of the utility model rape seed helix tube type.
Fig. 2 is the helix tube type re-seeding device left side structure schematic diagram that device is reseeded in the stepping of the utility model rape seed helix tube type.
Fig. 3 is the helix tube type re-seeding device right side structure schematic diagram that device is reseeded in the stepping of the utility model rape seed helix tube type.
Fig. 4 is that the stepping of the utility model rape seed helix tube type is reseeded the feed drum 1 of device and plants the cross section view of relation between case 3.
Fig. 5 is the cutaway view that the helix tube type re-seeding device end cap 5 of device is reseeded in the stepping of the utility model rape seed helix tube type.
Fig. 6 is the helix tube type re-seeding device port lid structural representation that device is reseeded in the stepping of the utility model rape seed helix tube type.
Fig. 7 is the drive system operation principle structured flowchart that device is reseeded in the stepping of the utility model rape seed helix tube type.
Fig. 8 is the control circuit schematic diagram that device is reseeded in the stepping of the utility model rape seed helix tube type.
Fig. 9 be in Fig. 2 A-A to profile.
In figure: 1, feed drum, 2, helical pipe, 3, tubular kind case, 4, looping pit baffle plate, 4.1, seed-filling hole, 5, end cap, 5.1, cover plate, 5.2, end cap wall, 6, feed shaft, 7, grain conductor, 8, DC stepper motor, 9, support, 10, fill kind of a mouth, 11, to charge seed mouth, 12, shaft coupling, 13, sliding bearing, 14, feed outlet, 15, case lid, 16, port lid, 17, screw, 18, screw, 19, to charge seed hole, 20, tube end plate, A, helix tube type re-seeding device, B, control module is reseeded in stepping, input circuit 100, pulse generation control circuit 200, counter 300, signal circuit 400, drive circuit 500.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Device is reseeded in rape seed helix tube type stepping as shown in the figure, and this system comprises helix tube type re-seeding device A and control module B is reseeded in stepping.
Helix tube type re-seeding device A as shown in the figure, comprise motor 8, feed drum 1 and be provided with the support 9 of feed shaft 6, feed drum 1 is set on feed shaft 6, feed shaft 6 one end is connected with motor 8 output shaft by shaft coupling 12, the other end of feed shaft 6 is connected with sliding bearing 13, and sliding bearing 13 is fixedly mounted on support 9; Feed drum 1 outer wall is provided with multiple helical pipe 2, and the two ends of helical pipe 2 are respectively equipped with fills kind of mouth 10 and mouth 11 of charging seed; One end of feed drum 1 is provided with tube end plate 20; Tube end plate 20 is provided with hole 19 of charging seed;
Tubular kind case 3 is provided with in feed drum 1; One end of tubular kind case 3 is fixedly connected with tube end plate 20, and the other end of tubular kind case 3 is installed with case lid 15, and the sidewall of tubular kind case 3 is provided with feed outlet 14; Also be provided with the port lid 16 matched with hole 19 of charging seed;
Also comprise the looping pit baffle plate 4 being provided with multiple seed-filling hole 4.1, looping pit baffle plate 4 is fixedly connected with one end of feed drum 1, and multiple seed-filling hole 4.1 connects with kind of the mouth 10 that fills of each helical pipe 2 respectively; Also comprise end cap 5, end cap 5 encloses structure by cover plate 5.1 and end cap wall 5.2 and forms, and end cap wall 5.2 is fixedly connected with looping pit baffle plate 4; Support 9 is also installed with grain conductor 7, and grain conductor 7 is positioned at the below of mouth 11 of charging seed.
Feed drum 1 inwall is being obliquely installed in frustum and the frustum cross section of close looping pit baffle plate 4 side is larger; Looping pit baffle plate 4 surface is also being obliquely installed of frustum and the frustum cross section of close end cap 5 side is larger; End cap 5 inwall is also being obliquely installed in frustum and the frustum cross section of close looping pit baffle plate 4 side is larger.
The gradient of feed drum 1 inwall is 5 °; The gradient on looping pit baffle plate 4 surface is 10 °, and the thickness of looping pit baffle plate 4 is 5mm; The gradient of end cap 5 inwall is 10 °, and the degree of depth of end cap 5 is 10mm.Distance between cover plate 5.1 and looping pit baffle plate 4 is 10mm.Helical pipe 2 is provided with 10 ~ 20, and helical pipe 2 is levoform or right-spiral, and the cross section of helical pipe 2 is circular, and the diameter of helical pipe 2 is 5 ~ 9mm.
Case lid 15 is fixedly connected with the end face of tubular kind case 3 one end is concordant, prevent seed in tubular kind case 3 from flowing in end cap 5 in a large number, charging seed in hole 19 on the direct precession tube end plate 20 of port lid 16, is convenient to fill kind in tubular kind case 3, prevents seed in tubular kind case 3 from flowing out in rotation process simultaneously.
The inwall of feed drum 1 is provided with 5 ° of frustum gradients, and comparatively large near the cross section of looping pit baffle plate 4, the seed being convenient to kinds of bank deposits district easily enters looping pit baffle plate 4 along with feed drum 1 rotates and enters in end cap 5; Looping pit baffle plate 4 is provided with 10 ° of frustum gradients, and comparatively large near the cross section of end cap 5, the thickness of looping pit baffle plate 4 is 5mm; End cap 5 is provided with the frustum gradient of 10 °, and comparatively large near the cross section of looping pit baffle plate 4, be beneficial to seed in end cap 5 and be filled with in helical pipe 2, the degree of depth of end cap 5 is 10mm.
Preferred embodiment, feed drum 1 excircle is arranged with right-spiral helical pipe 2 to one, and be uniformly distributed 15 helical pipes, pitch is 120mm, and pipeline section is circular, and kind of the mouth 10 that fills of pipeline is half pitch with mouth 11 spacing of charging seed.Tubular kind case 3 is built in feed drum 1, and tubular kind case 3 and feed drum 1 are integrally connected, between feed drum 1 madial wall and tubular kind case 3 wall, region is kinds of bank deposits district, tubular kind case 3 sidewall opens a feed outlet 14, and rape seed enters the kind face of keeping certain height in kinds of bank deposits district along with seeding unit rotates.There are case lid 15 and port lid 16 in tubular kind case 3 two ends, and case lid 15 screw 18 and tubular kind case 3 wall fixedly mount, and prevent seed from flowing out in a large number, and the hole 19 of charging seed on the direct precession tube end plate 20 of port lid 16, conveniently fills kind to tubular kind case 3.Looping pit baffle plate 4 is fastened on feed drum 1 nose circle face, end cap 5 flushes fixing with looping pit baffle plate 4 screw 17, distance is 10mm between the two, looping pit baffle plate 4 coordinates hole with helical pipe 2 section holes, prevent seed in seed-filling process from entering in the gap of pipeline enclosure, looping pit baffle plate 4 is beneficial to seed with 10 ° of gradients and enters from kinds of bank deposits district and fill kind of end cap 5, and end cap 5 is beneficial to pipeline with 10 ° of gradients and fills kind.Be grain conductor 7 below the mouth 11 of charging seed of helical pipe 2, grain conductor 7, motor 8 are fixed on support 9.Feed shaft 6 one end connects with motor 8 output shaft shaft coupling 12, and feed shaft 6 other end sliding bearing 13 is fixed, and sliding bearing 13 is fixedly mounted on support 9.
Stepping is reseeded control module B and is made up of DC stepper motor 8, input circuit 100, pulse generation control circuit 200, counter 300, signal circuit 400, drive circuit 500.DC stepper motor 8 model is SYNTRON 28BYG250CK, and DC stepper motor 8 is fixedly mounted on support 9; Input circuit 100 is for receiving broadcast leakage detection signal; Pulse generation control circuit 200 forms primarily of NE555 oscillator, 8 jumper cap be connected with counter set end, and for generation of reference pulse, by changing the counting number of the wiring combination adjustment reference pulse signal of jumper cap, scope is 1 ~ 255; Counter 300 forms, with broadcast leakage signal for instruction counts reference pulse signal primarily of 74HC40103; Signal circuit 400 is applicable to the control signal of motor for exporting; Drive circuit 500 is made up of L298N chip, for driving DC stepper motor 8.
In the utility model, feed drum 1 diameter is 60mm, long 60mm, its excircle is arranged with right-spiral helical pipe 2, pipeline section is circular, and according to rate of after culture with to reseed grain apart from design pipe diameter be 5 ~ 9mm, number of tubes is 10 ~ 20, pipeline pitch is set to 120mm, pipeline fills kind of mouth 10 and the distance of charging seed between mouth 11 is at least half pitch, ensures that enough distances avoid seed to flow automatically, realizes seed and reseed uniformity.
Feed drum 1 inwall is with 5 ° of gradients, and looping pit baffle plate 4 is with 10 ° of gradients, and its thickness is 5mm, end cap 5 is with 10 ° of gradients, and its degree of depth is 10mm, and setting gradient is beneficial to rape seed and enters end cap 5, not easily produce rape seed to pile up, keep kind of a face certain level height.
Region between tubular kind case 3 outer wall and feed drum 1 inwall is annular kinds of bank deposits district, kinds of bank deposits sector width is 10mm to the maximum, minimum is 5mm, and tubular kind case 3 diameter is 28mm, and length is 58mm, its sidewall has a feed outlet 14, aperture is 6mm, long 15mm, and the seed be conducive in tubular kind case 3 enters kinds of bank deposits district along with feed drum 1 rotates, rotate and within one week, about have 15 ~ 30 seeds to enter kinds of bank deposits district, ensure the kind face height that kinds of bank deposits district is certain; Tubular kind case 3 two ends are case lid 15 and port lid 16, case lid 15 screw 18 and tubular kind case 3 wall fixedly mount, case lid 15 is concordant with tubular kind case 3 end wall fixing, and the distance between end cap 5 end face is 15mm, prevent the seed inside tubular kind case 3 from entering kinds of bank deposits district in a large number, the tube end plate 20 of feed drum 1 is opened the hole 19 of charging seed that a diameter is 15mm, and conveniently in kind case 3, fill kind, port lid 16 is connected with this hole 19 of charging seed.
Stepping is reseeded control module B drive system and is powered by vehicle power 12V, and DC stepper motor 8 model is SYNTRON 28BYG250CK, and DC stepper motor 8 is screwed on support 9; Input circuit 100 is for responding broadcast leakage detection signal; Pulse generation control circuit 200 forms primarily of NE555 oscillator, 8 jumper cap be connected with counter set end, and for generation of reference pulse, by changing the counting number of the wiring combination adjustment reference pulse signal of jumper cap, scope is 1 ~ 255; Counter 300 forms, with broadcast leakage signal for instruction counts reference pulse signal primarily of 74HC40103; Signal circuit 400 is applicable to the control signal of motor for exporting; Drive circuit 500 is made up of L298N chip, for driving DC stepper motor 8; If setting stepper motor step angle is 0.9 °, can realize re-seeding device to reseed within the scope of 0.9 ° ~ 360 °, if pulse frequency is decided to be 200Hz, pipeline completes and reseeds required time is 0.1s ~ 0.2s, response time is shorter, meets precise seeder and reseeds requirement.
Stepping is reseeded after control module receives broadcast leakage signal, and DC stepper motor drives helix tube type re-seeding device to rotate respective angles and completes and reseeds.
Utility model works principle is as follows:
The utility model and precise rape seeding device broadcast leakage real-time detection method with the use of, according to rape seed grain apart from requiring with helical pipe equally distributed quantity on feed drum, pre-set DC stepper motor rotating speed, when reseeding control system and receiving broadcast leakage signal, pulse signal driving DC stepper motor is produced through reseeding control system, DC stepper motor drives helix tube type re-seeding device rotation work, and helix tube type re-seeding device rotates respective angles according to broadcast leakage signal pulse number.Before re-seeding device work, tubular kind case and kinds of bank deposits district are full of a certain amount of seed, tubular kind case leaves space and is beneficial to rape seed flowing.When helix tube type re-seeding device rotates, when the feed outlet of tubular kind case sidewall turns to below, seed in tubular kind case enters kinds of bank deposits district from feed outlet, seed in kinds of bank deposits district enters end cap through looping pit baffle plate, utilize rape seed mobility to roll and automatically fill kind toward screwed pipe mouth, rape seed is rolled in helical pipe along with feed drum rotates, and automatically completes that screwed pipe protects kind, defeated kind, move to complete by gravity and mobility when screwed pipe is charged seed mouthful and charge seed, complete in time, exactly and reseed operation.Helix tube type re-seeding device controls kind face, kinds of bank deposits district height according to rate of after culture, ensures that the rape seed at every turn entering helical pipe is 2 ~ 3, realizes essence amount and reseeds.
Claims (7)
1. a device is reseeded in the stepping of rape seed helix tube type, it is characterized in that: reseed control module (B) by helix tube type re-seeding device (A) and stepping and form;
Described stepping reseed control module (B) comprise DC stepper motor (8), in order to respond broadcast leakage detection signal input circuit (100), in order to produce, the pulse generation control circuit (200) of adjustment reference pulse, be counter (300), the signal circuit (400) being applicable to the control signal of motor in order to output and in order to drive the drive circuit (500) of DC stepper motor (8) that instruction count reference pulse signal in order to broadcast leakage signal; Described input circuit (100) and pulse generation control circuit (200) connect with counter (300) respectively, described counter (300) also connects with signal circuit (400), and the power shaft of described signal circuit (400), drive circuit (500) and DC stepper motor (8) connects successively;
Described helix tube type re-seeding device (A) comprises feed drum (1) and is provided with the support (9) of feed shaft (6), described feed drum (1) is set on feed shaft (6), feed shaft (6) one end is connected with motor (8) output shaft by shaft coupling (12), the other end of feed shaft (6) is connected with sliding bearing (13), and described sliding bearing (13) is fixedly mounted on support (9); It is characterized in that: described feed drum (1) outer wall is provided with multiple helical pipe (2), the two ends of described helical pipe (2) are respectively equipped with fills kind of a mouth (10) and mouth of charging seed (11); One end of described feed drum (1) is provided with tube end plate (20); Described tube end plate (20) is provided with hole of charging seed (19);
Tubular kind case (3) is provided with in described feed drum (1); One end of described tubular kind case (3) is fixedly connected with tube end plate (20), the other end of tubular kind case (3) is installed with case lid (15), and the sidewall of described tubular kind case (3) is provided with feed outlet (14); Also be provided with the port lid (16) matched with hole of charging seed (19);
Also comprise the looping pit baffle plate (4) being provided with multiple seed-filling hole (4.1), described looping pit baffle plate (4) is fixedly connected with one end of feed drum (1), and described multiple seed-filling hole (4.1) connects with kind of the mouth (10) that fills of each helical pipe (2) respectively;
Also comprise end cap (5), described end cap (5) encloses structure by cover plate (5.1) and end cap wall (5.2) and forms, and described end cap wall (5.2) is fixedly connected with looping pit baffle plate (4);
Described support (9) is also installed with grain conductor (7), described grain conductor (7) is positioned at the below of mouth of charging seed (11).
2. device is reseeded in rape seed helix tube type according to claim 1 stepping, it is characterized in that: described feed drum (1) inwall is being obliquely installed in frustum and the frustum cross section of close looping pit baffle plate (4) side is larger; Described looping pit baffle plate (4) surface is also being obliquely installed of frustum and the frustum cross section of close end cap (5) side is larger; Described end cap (5) inwall is also being obliquely installed in frustum and the frustum cross section of close looping pit baffle plate (4) side is larger.
3. device is reseeded in rape seed helix tube type according to claim 2 stepping, it is characterized in that: the gradient of described feed drum (1) inwall is 5 °; The gradient on described looping pit baffle plate (4) surface is 10 °, and the thickness of looping pit baffle plate (4) is 5mm; The gradient of described end cap (5) inwall is 10 °, and the degree of depth of end cap (5) is 10mm.
4. reseed device according to described rape seed helix tube type stepping arbitrary in claims 1 to 3, it is characterized in that: the distance between described cover plate (5.1) and looping pit baffle plate (4) is 10mm.
5. reseed device according to described rape seed helix tube type stepping arbitrary in claims 1 to 3, it is characterized in that: described helical pipe (2) is provided with 10 ~ 20, helical pipe (2) is right-spiral, the cross section of helical pipe (2) is circular, and the diameter of helical pipe (2) is 5 ~ 9mm.
6. device is reseeded in rape seed helix tube type according to claim 4 stepping, it is characterized in that: described helical pipe (2) is provided with 10 ~ 20, helical pipe (2) is right-spiral, the cross section of helical pipe (2) is circular, and the diameter of helical pipe (2) is 5 ~ 9mm.
7. device is reseeded in rape seed helix tube type according to claim 6 stepping, it is characterized in that: the model of described DC stepper motor (8) is SYNTRON 28BYG250CK; Described pulse generation control circuit (200) is made up of NE555 oscillator, jumper cap; Described counter (300) is made up of 74HC40103; Described drive circuit (500) is made up of L298N chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420711334.5U CN204443045U (en) | 2014-11-24 | 2014-11-24 | Device is reseeded in the stepping of rape seed helix tube type |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420711334.5U CN204443045U (en) | 2014-11-24 | 2014-11-24 | Device is reseeded in the stepping of rape seed helix tube type |
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| CN204443045U true CN204443045U (en) | 2015-07-08 |
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| CN201420711334.5U Withdrawn - After Issue CN204443045U (en) | 2014-11-24 | 2014-11-24 | Device is reseeded in the stepping of rape seed helix tube type |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104396393A (en) * | 2014-11-24 | 2015-03-11 | 华中农业大学 | Solenoid-type step rapeseed reseeding system |
-
2014
- 2014-11-24 CN CN201420711334.5U patent/CN204443045U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104396393A (en) * | 2014-11-24 | 2015-03-11 | 华中农业大学 | Solenoid-type step rapeseed reseeding system |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150708 Effective date of abandoning: 20160622 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |