CN105612920B - A kind of corn harvester - Google Patents
A kind of corn harvester Download PDFInfo
- Publication number
- CN105612920B CN105612920B CN201610070318.6A CN201610070318A CN105612920B CN 105612920 B CN105612920 B CN 105612920B CN 201610070318 A CN201610070318 A CN 201610070318A CN 105612920 B CN105612920 B CN 105612920B
- Authority
- CN
- China
- Prior art keywords
- ear
- standing grain
- frame
- power
- picking unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D47/00—Headers for topping of plants, e.g. stalks with ears
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D45/00—Harvesting of standing crops
- A01D45/02—Harvesting of standing crops of maize, i.e. kernel harvesting
Abstract
The present invention relates to a kind of corn harvester, including frame, frame is provided with power input shaft and power distributing shaft, described frame is provided with the ear-picking unit and straw millstone that power input shaft drives, the power output shaft of ear-picking unit inputs power to power distributing shaft, power distributing shaft drives the branch set in frame to help standing grain cutter device, it is ear-picking unit, straw millstone and ear-picking unit with respect to Matching installation under ear-picking unit on methods, rack that branch, which helps the back lower place of standing grain cutter device,.Present device is simple in construction, each device compact and reasonable arrangement, overall volume is small, can gather in single file or two row corns with supporting baby tractor, it can also be configured and multirow corn is gathered on large tractor and corn combine, reliability improves, and effect is good, and consumption power is small, fuel consumption is small, applied widely.
Description
Technical field
The invention belongs to technical field of agricultural mechanical equipment, and in particular to a kind of corn harvester.
Background technology
In recent years, as the development of mechanization of agriculture, the mechanized harvest of corn have also been made significant headway.Corn machine
Toolization harvest technology be in corn maturation, once completed in field using corn harvesting machine harvesting, peeling, fruit ear header,
The process of the multi-mode operation such as straw chopping and returning or recovery.Common type includes the device of following harvest technology：Harvesting-stripping
Skin-spike collecting-straw chopping and returning（Or chopping recovery）, harvesting-spike collecting-straw chopping and returning (or chopping recovery),
Harvesting-fruit ear threshing-seed collection-straw chopping and returning（Or chopping recovery）Deng.The general skill of conventional maize harvesting mechanization
Art is as follows with device：
First, harvesting technology and device
Harvesting technology and device generally have two kinds of " harvesting roll-type " and " harvesting plate and stem pulling roller group are box-like "." harvesting roll-type "
By a pair of tilting vertical sleeping harvesting roller arrangements and dial standing grain device and form, corn stem is allocated to two snapping bars by rice-pulling chain during operation
Centre, harvesting roller surface carry dragon's paw shape projection opposite direction rotating, and corn stem pulls downward on, and thick corn ear is in snapping bar
Extruding under with corn stem depart from, the corn ear taken in the presence of rice-pulling chain, into horizontal auger conveyor and to
After convey, this kind of form structure is simple, and disconnected stalk is few during harvesting, but snapping bar easily blocks when stalk is thick, moisture content is higher, by
Contacted in the corn ear taken with the snapping bar rotated, it is serious that fruit ear moisture content gnaws fringe when relatively low." harvesting plate and stem pulling roller group
It is box-like " it is to be generally 4 ribs or 6 rib rollers into, stem pulling roller by harvesting plate and stem pulling roller group, the stem pulling roller of opposite direction rotating is by jade during operation
Rice stalk is pulled downward on, and fruit ear departs from corn stem in the presence of harvesting plate, and the corn ear taken is sent into by chain
Horizontal auger conveyor or ear or transport device, the fruit ear that this kind of form is taken do not contact with the stem pulling roller of rotation, and fruit ear damage is small,
Seed damage rate is low, but disconnected stalk is more when stalk moisture content is higher, need to configure special trash discharging apparatus, power attenuation is larger.
2nd, peeling technology and device apparatus for peeling off use roll-type peeling principle more, and fruit ear bract is rubbed by peeling rollers
Power is wiped, bract is divested.Apparatus for peeling off is mainly made up of some peeling rollers to turning round in opposite directions and force feed device, peeling roll axis with
Level is in 100 ° of -120 ° of inclination angles, and so that fruit ear glides vertically, force feed device is arranged on the top of peeling rollers, force feed during work
Corn ear is pressed to peeling rollers and pushed backward by device, and the peeling rollers of rotation tear corn ear bract, and between stripping roller
Pulled out in gap.3rd, stalk treatment technology and device
Different demands for each corn producing region to maize straw, chopping and returning device is configured on maize harvesting machine or is cut
Broken retracting device, while harvesting corn fruit ear, straw chopping and returning or chopping are reclaimed.Conventional corn straw smashing dress
It is equipped with two kinds of " flail knife formula " and " hob type ".Flail knife formula corn stalk powder crushing device is often singles haft horizontal, mainly by gear-box, biography
Moving axis, belt drive component, cutter shaft component, hood, stationary knife and limiting roll etc. form.Whipping bite is hinged with cutter shaft component
Tool, cutting tool generally have three kinds：Hammer pawl, tulwar and straight knife into shape, be furnished with identical cutting tool on every kind of cutter shaft, be usually symmetrical
Arrangement, the cutting tool pattern on same cutter shaft can not exchange.It is ranked knife equipped with 2~3 on pulverizing chamber case, with bite
Tool is combined into pulverizing chamber.During work, cutter shaft rotates at a high speed, and the cutting tool of high-speed motion carries out impact cutting work to the stalk on ground
Industry, each impact cutting can all cut a part of stalk, and directly be crushed maize straw in a manner of cutting at a high speed, cut, hit, rub with the hands, tear,
Or in the case where the crushing part of high speed rotation drives, the maize straw under impact cutting is involved in pulverizing chamber at a high speed, and by case
The further impact cutting of stationary knife, strike, tear, rubbing, by impact cutting repeatedly, strike, stalk is into broken section or fibrous, equably
Shed on ground.Flail knife formula corn stalk powder crushing device is typically mounted on ear-picking unit below and rearward, and the height for the stubble left is by corn
The control of straw millstone limiting roll, the angle of limiting roll is adjusted, the height for the stubble left of maize straw can be changed.Flail knife formula corn
Straw millstone shredding type belongs to nothing or single supporting cutting, to improve crushing effect, the cutting linear speed at cutting tool knife end
Degree requires higher, therefore the power consumed is larger.Hob type：Hob type corn stalk powder crushing device is mainly by belt transmission group
Part, cutter shaft component, hood, stationary knife etc. form.Hob type corn stalk powder crushing device is typically mounted on below ear-picking unit, cutter shaft
Dynamic cutting knife is fixed with component, dynamic cutting knife operating track can adjust approximate with stationary knife tangent.During work, rotation will at a high speed for cutter shaft
Maize straw is cut off and takes the back upper place of slitter shaft to, and maize straw is cut off and crushed by the moving knife rotated under the auxiliary of stationary knife.
Corn stem shreds under the cooperation of hobboing cutter and stationary knife when hob type corn stalk powder crushing device works, with flail knife formula without or single prop up
It is low compared to power consumption to hold cutting and grinding, structure is relatively easy, occupies little space, but crushing effect is slightly worse.Straw chopping reclaims:
During corn combine operation, corn stalk powder crushing device is installed additional configuration device for recovering straw, by the corn stalk after crushing
Stalk throws vanning or entrucking, as feed or fuel.
Conventional maize harvesting mechanization harvest technology and the ear-picking unit and reducing mechanism of device are to separate, and knot be present
Structure is more complicated, and power consumption is larger, fruit ear by the rate of biting it is also larger the problems such as.And this kind of constitutional detail is more, and cost is also higher, makes
It is low with complex operation reliability.
The content of the invention
A kind of corn harvester is provided for defect present in prior art, the letter of present device structure
Single, each device compact and reasonable arrangement, overall volume is small, can be gathered in single file or two row corns with supporting baby tractor, can also be matched somebody with somebody
Put and multirow corn is gathered on large tractor and corn combine, reliability improves, and effect is good, consumes power
Small, fuel consumption is small, applied widely.
To achieve the above object, the technical solution adopted by the present invention is as follows：
The invention provides a kind of corn harvester, including frame, frame is provided with power input shaft and power point
With axle, described frame is provided with the ear-picking unit and straw millstone that power input shaft drives, and the power of ear-picking unit is defeated
Shaft, which inputs power to power distributing shaft, power distributing shaft, drives the branch set in frame to help standing grain cutter device；Described point
Row help standing grain cutter device by two groups be symmetrically installed help standing grain cutting gear-box, help standing grain wheel, cutting moving knife, cutting stationary knife and to be fixedly mounted with
Branch's water conservancy diversion shield composition in frame, help the upper end of standing grain cutting gearbox output shaft to be fixed with and help standing grain wheel, help standing grain cutting teeth
The lower end of roller box output shaft is fixed with cutting moving knife, helps on the outside of standing grain wheel for two and is provided with branch's water conservancy diversion shield, and cutting stationary knife is set
Put and helped two under the standing grain cutting gearbox output shaft line of centres on methods, rack；Branch helps the back lower place of standing grain cutter device to be filled for harvesting
Put, straw millstone and ear-picking unit are with respect to Matching installation under ear-picking unit on methods, rack.
Above-mentioned corn harvester also includes spike collecting conveying device, and spike collecting conveying device, which is arranged on, plucks
In the frame at the rear of fringe device, the power of spike collecting conveying device is driven by power distributing shaft.
The ear-picking unit is made up of preceding snapping bar, rear snapping bar, harvesting line shaft and stalk baffle plate, and preceding snapping bar is with after
Snapping bar is arranged on branch by bearing and helped in the frame of the standing grain cutter device back lower place, the roll shaft radial direction of preceding snapping bar and rear snapping bar
Horizontal by -30 ° ~ -15 ° of inclination angle, preceding snapping bar is connected with rear snapping bar by gear；The preceding snapping bar is with after
Harvesting rib is evenly equipped with the axial direction of snapping bar, stalk baffle plate is packed in the back upper place frame between preceding snapping bar and rear snapping bar
On.
The straw millstone includes crushing movable arbor, crushes moving knife and stationary knife, and it is dynamic provided with crushing to crush movable arbor
Knife, crush movable arbor and be arranged on by bearing in frame, the stationary knife being fixed in frame is engaged with crushing movable arbor.
The spike collecting conveying device includes spike collecting delivery chute, lateral transfer flood dragon and chain conveyor, fruit ear
Collect delivery chute to be packed in after ear-picking unit on methods, rack, the preceding groove of spike collecting delivery chute with snapping bar rotational trajectory along matching somebody with somebody
Close, lateral transfer auger is arranged on spike collecting delivery chute by bearing, and it is defeated that spike collecting delivery chute rear is provided with chain type
Send device.
Described branch helps standing grain cutter device, ear-picking unit and straw millstone to form a set of harvesting mechanism, every jade
Rice harvester cutting bench is provided with a set of harvesting mechanism or at least two sets of harvesting mechanisms that be arranged in parallel.
The screw for mounting power walking device or hinge hole are set in described frame.
The coaxial connector or hinge for mounting power walking device are set at power input shaft in the frame
Hole.
Running gear includes the devices such as engine, steering, braking, speed change, and power walking device is responsible for moving and provided dynamic
Power, the mode that frame is bolted, rivets, welds or is hinged are connected with miscellaneous part.
Compared with prior art, the advantage of the invention is that：
The corn harvester of the present invention will help standing grain cutter device, ear-picking unit and straw millstone rationally whole in lines
Closing, its is simple in construction, and compact and reasonable arrangement, overall volume is small, can gather in single file or two row corns with supporting baby tractor,
It can also be configured and multirow corn is gathered on large tractor and corn combine, gather in convenient and swift, reliability
Improve, effect is good, and consumption power is small, and fuel consumption is small, applied widely.
Brief description of the drawings
Fig. 1 is that the duplicate rows hobboing cutter crushing type ceding of Taiwan of the present invention removes left side shields and winder side structure schematic view；
Fig. 2 is that the duplicate rows hobboing cutter crushing type ceding of Taiwan of the present invention removes left side shields and winder overlooking the structure diagram；
Fig. 3 is that the partial structurtes for helping standing grain cutter device, ear-picking unit and straw millstone in apparatus of the present invention in lines are shown
It is intended to.
Embodiment
It is detailed description of the invention below, but present disclosure does not limit so.
A kind of corn harvester, including frame 1, frame 1 is provided with power input shaft 2 and power distributing shaft 3, described
Frame 1 be provided with power input shaft 2 drive ear-picking unit 4 and straw millstone 5, the power output shaft of ear-picking unit 4
Power is distributed to power distributing shaft 3, power distributing shaft 3 drives the branch set in frame to help standing grain cutter device 6 and fruit ear to receive
Collect conveying device 7；The branch help standing grain cutter device 5 by two groups be symmetrically installed help standing grain cutting gear-box 61, help standing grain wheel 62, cut
The branch's water conservancy diversion shield 65 for cut moving knife 63, cutting stationary knife 64 and being packed in frame 1 forms, and helps standing grain cutting gear-box 61 to export
The upper end of axle, which is fixed with, helps standing grain wheel 62, helps the lower end of the standing grain cutting output shaft of gear-box 61 to be fixed with cutting moving knife 63, two are helped standing grain
Branch's water conservancy diversion shield 65 is provided with the outside of wheel, cutting stationary knife 64 is arranged on two and helps standing grain to cut the output shaft line of centres of gear-box 61
On lower methods, rack；It is ear-picking unit 4 that branch, which helps the back lower place of standing grain cutter device 6, and straw millstone 5 and ear-picking unit 4 are relative
For Matching installation on 4 times methods, racks of ear-picking unit, the rear of ear-picking unit 4 is provided with spike collecting conveying device 7；The harvesting dress
Put 4 to be made up of preceding snapping bar 41, rear snapping bar 42 and stalk baffle plate 43, preceding snapping bar 41 is installed with rear snapping bar 42 by bearing
On the back lower place frame of standing grain cutter device 6 is helped in lines, the roll shaft of preceding snapping bar 41 and rear snapping bar 42 radially horizontal by-
30 ° ~ -15 ° of inclination angle, preceding snapping bar 41 are connected with rear snapping bar 42 by gear；The preceding snapping bar 41 and rear harvesting
Harvesting rib is evenly equipped with the axial direction of roller 42, stalk baffle plate 43 is packed in the back upper place between preceding snapping bar 41 and rear snapping bar 42
In frame；The straw millstone 5 includes crushing movable arbor 51, crushes moving knife 52 and stationary knife 53, crushes and is set on movable arbor 51
Have and crush moving knife 52, crush movable arbor 51 and be arranged on by bearing in frame, be fixed on the stationary knife 53 in frame with crushing moving knife
52 rotational trajectories are engaged；The spike collecting conveying device 7 includes spike collecting delivery chute 71, lateral transfer flood dragon 72 and chain
Formula conveyer 73, spike collecting delivery chute 71 are packed in after ear-picking unit 4 on methods, rack, the preceding groove edge of spike collecting delivery chute 71
Coordinate with the rear rotational trajectory of snapping bar 42, lateral transfer auger 72 is arranged on spike collecting delivery chute 71 by bearing, fruit ear
Collect the rear of delivery chute 71 and chain conveyor 73 is installed；Wherein, described branch helps standing grain cutter device 6, ear-picking unit and straw
Stalk reducing mechanism forms a set of harvesting mechanism, every corn harvester be provided with a set of harvesting mechanism or be arranged in parallel to
Few two sets of harvesting mechanisms；The screw for mounting power walking device or hinge hole are set in described frame；The frame
On power input shaft at be provided with and be used to mount coaxial connector or the hinge hole of power walking device；Running gear includes
The devices such as engine, steering, braking, speed change, power walking device are responsible for moving and provide power, frame is bolted,
Riveting, welding or be hinged mode are connected with miscellaneous part.
The course of work of the present invention：
The corn harvester of the present invention is connected to baby tractor, large tractor or corn by frame 1
On united reaper, building machine provides power, and power is inputted to power input shaft 2, during work, starts building machine and moves ahead,
Power input power input shaft 2 drives ear-picking unit 4 and straw millstone 5, and ear-picking unit 4 is by power input power distributing shaft
3, power distributing shaft 3 drives branch to help standing grain cutter device 6 and spike collecting conveying device 7 to do corresponding operating；Branch helps standing grain to cut
Help standing grain wheel 62 that plant is allocated into ear-picking unit 4 under the auxiliary of branch's water conservancy diversion shield 65 on device 6, while cut moving knife 63
Plant is cut under the cooperation of cutting stationary knife 64.Due to the damping of stalk baffle plate 43 and the preceding snapping bar of ear-picking unit 4
41 and the relative operating of rear snapping bar 42, corn stem moved downward in preceding snapping bar 41 and the roll gap of rear snapping bar 42；Before pluck
Fringe roller 41 and the roll gap of rear snapping bar 42 can hold corn ear fringe handle and corn stem by and not allowing corn ear to pass through this
Under the cooperation of the preceding snapping bar of sample and rear snapping bar, on the one hand corn ear is removed, stalk is on the other hand fed down into stalk
Reducing mechanism 5；The fruit ear removed drops 71 on fruit ear guiding gutter, and conveying flood dragon 72 makes a gift to someone corn ear chain conveyor
73, corn ear is guided to relevant position by chain conveyor 73.The maize straw for being sent into straw millstone 5 is crushing moving knife
Crushed on axle 51 and continue cut-out crushing under moving knife 52 and the mating reaction of stationary knife 53, then become scattered about the back lower place of straw millstone 5,
This process constantly repeats that the harvesting of corn can be completed.
Claims (7)
1. a kind of corn harvester, including frame, frame is provided with power input shaft and power distributing shaft, and its feature exists
In：Described frame is provided with the ear-picking unit and straw millstone that power input shaft drives, the power output of ear-picking unit
Axle, which distributes power to power distributing shaft, power distributing shaft, drives the branch set in frame to help standing grain cutter device；The branch
Help standing grain cutter device by two groups be symmetrically installed help standing grain cutting gear-box, help standing grain wheel, cutting moving knife, cutting stationary knife and to be packed in
Branch's water conservancy diversion shield composition in frame, help the upper end of standing grain cutting gearbox output shaft to be fixed with and help standing grain wheel, help standing grain to cut gear
The lower end of case output shaft is fixed with cutting moving knife, helps on the outside of standing grain wheel for two and is provided with branch's water conservancy diversion shield, and cutting stationary knife is set
Helped two under the standing grain cutting gearbox output shaft line of centres on methods, rack；Branch helps the back lower place of standing grain cutter device to be filled for harvesting
Put, straw millstone and ear-picking unit are with respect to Matching installation under ear-picking unit on methods, rack.
2. corn harvester as claimed in claim 1, it is characterised in that also received including spike collecting conveying device, fruit ear
In the frame at the rear that collection conveying device is arranged on ear-picking unit, the power of spike collecting conveying device is by power distributing shaft band
It is dynamic.
3. corn harvester as claimed in claim 1, it is characterised in that：The straw millstone includes crushing moving knife
Axle, moving knife and stationary knife are crushed, crush movable arbor and be provided with crushing moving knife, crush movable arbor and be arranged on by bearing in frame, Gu
The stationary knife being scheduled in frame is engaged with crushing movable arbor.
4. corn harvester as claimed in claim 1, it is characterised in that：The ear-picking unit by preceding snapping bar, after pluck
Fringe roller, harvesting line shaft and stalk baffle plate composition, preceding snapping bar are arranged on branch by bearing with rear snapping bar and help standing grain cutting to fill
Postpone on lower methods, rack, the roll shaft radial direction of preceding snapping bar and rear snapping bar is horizontal by -30 ° ~ -15 ° of inclination angle, preceding harvesting
Roller is connected with rear snapping bar by gear；The preceding snapping bar in the axial direction of rear snapping bar with being evenly equipped with harvesting rib, stalk
Baffle plate is packed in the back upper place frame between preceding snapping bar and rear snapping bar.
5. corn harvester as claimed in claim 2, it is characterised in that：The spike collecting conveying device includes fruit ear
Collect delivery chute, lateral transfer auger and chain conveyor, spike collecting delivery chute is packed in after ear-picking unit on methods, rack,
The preceding groove of spike collecting delivery chute coordinates along with snapping bar rotational trajectory, and lateral transfer auger is arranged on spike collecting by bearing
On delivery chute, spike collecting delivery chute rear is provided with chain conveyor.
6. corn harvester as claimed in claim 1, it is characterised in that：Described branch helps standing grain cutter device, fruit ear
Protection board, straw millstone and ear-picking unit form a set of harvesting mechanism, and every corn harvester is provided with a set of receipts
Obtain mechanism or at least two sets of harvesting mechanisms that be arranged in parallel.
7. corn harvester as claimed in claim 1, it is characterised in that：Set in the frame for mounting power walking
The screw of device or hinge hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610070318.6A CN105612920B (en) | 2016-02-02 | 2016-02-02 | A kind of corn harvester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610070318.6A CN105612920B (en) | 2016-02-02 | 2016-02-02 | A kind of corn harvester |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105612920A CN105612920A (en) | 2016-06-01 |
| CN105612920B true CN105612920B (en) | 2017-12-08 |
Family
ID=56028635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610070318.6A Expired - Fee Related CN105612920B (en) | 2016-02-02 | 2016-02-02 | A kind of corn harvester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105612920B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11129332B2 (en) * | 2018-06-29 | 2021-09-28 | Deere & Company | Corn stalk roll arrangement |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19601421A1 (en) * | 1996-01-17 | 1997-07-24 | Deere & Co | Crop gathering appliance and separator into two |
| CN101084710A (en) * | 2006-06-09 | 2007-12-12 | 荣成市海山机械制造有限公司 | Backpack-type maize harvester |
| CN201135034Y (en) * | 2008-01-02 | 2008-10-22 | 中国农业机械化科学研究院 | Corn harvesting table and combine harvester for corn with the corn harvesting table |
| CN202998859U (en) * | 2012-12-31 | 2013-06-19 | 常蓬彬 | Non-division corn straw harvesting machine header capable of adapting to straw of different sizes |
| CN103843532A (en) * | 2014-02-28 | 2014-06-11 | 陈永政 | Corn harvesting machine header |
| CN205510932U (en) * | 2016-02-02 | 2016-08-31 | 陈永政 | Cutting platform of maize harvester |
-
2016
- 2016-02-02 CN CN201610070318.6A patent/CN105612920B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19601421A1 (en) * | 1996-01-17 | 1997-07-24 | Deere & Co | Crop gathering appliance and separator into two |
| CN101084710A (en) * | 2006-06-09 | 2007-12-12 | 荣成市海山机械制造有限公司 | Backpack-type maize harvester |
| CN201135034Y (en) * | 2008-01-02 | 2008-10-22 | 中国农业机械化科学研究院 | Corn harvesting table and combine harvester for corn with the corn harvesting table |
| CN202998859U (en) * | 2012-12-31 | 2013-06-19 | 常蓬彬 | Non-division corn straw harvesting machine header capable of adapting to straw of different sizes |
| CN103843532A (en) * | 2014-02-28 | 2014-06-11 | 陈永政 | Corn harvesting machine header |
| CN205510932U (en) * | 2016-02-02 | 2016-08-31 | 陈永政 | Cutting platform of maize harvester |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105612920A (en) | 2016-06-01 |
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Granted publication date: 20171208 Termination date: 20190202 |