CN106612661A - Hydraulically-controlled vibrating type suppressing roller - Google Patents
Hydraulically-controlled vibrating type suppressing roller Download PDFInfo
- Publication number
- CN106612661A CN106612661A CN201610871403.2A CN201610871403A CN106612661A CN 106612661 A CN106612661 A CN 106612661A CN 201610871403 A CN201610871403 A CN 201610871403A CN 106612661 A CN106612661 A CN 106612661A
- Authority
- CN
- China
- Prior art keywords
- roller
- hydraulic
- pressure
- pack roller
- control valve
- 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.)
- Granted
Links
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B49/00—Combined machines
- A01B49/04—Combinations of soil-working tools with non-soil-working tools, e.g. planting tools
- A01B49/06—Combinations of soil-working tools with non-soil-working tools, e.g. planting tools for sowing or fertilising
- A01B49/065—Combinations of soil-working tools with non-soil-working tools, e.g. planting tools for sowing or fertilising the soil-working tools being actively driven
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B29/00—Rollers
- A01B29/04—Rollers with non-smooth surface formed of rotatably-mounted rings or discs or with projections or ribs on the roller body; Land packers
Abstract
The invention discloses a hydraulically-controlled vibrating type suppressing roller which aims at overcoming the defects that the pressure of a suppressing roller to a ridge table is unstable in the working process, the function is single and suppressing is not uniform. The hydraulically-controlled vibrating type suppressing roller comprises a fixed roller, a movable roller, a vibration generator, a support, a hydraulic pump, a hydraulic cylinder and a three-position four-way directional control valve, the pressure of the suppressing roller to the soil can be more uniform by the vibration generator, and further the density of the soil layer of the surface of the ridge table can be more uniform. The initial pressure of the suppressing roller to the ridge table can be more stable by hydraulic control, higher suppressing quality can be obtained, and the excellent growing environment of crops can be ensured. The soil blocks can be broken more easily by the aid of the protruding stripes on the outer surface of the movable roller, and the suppressing to the soil is more uniform.
Description
Technical field
The invention belongs under drought environment a kind of hydraulic control in agricultural seeder field oscillatory type pack roller.
Background technology
Pack roller plays important role during crop seeding, after planting compresses soil compression in crop,
So the soil density above crop seed can be increased, be conducive to the holding of soil moisture, crop can be made more preferable
Germinate and emerge.Without before pack roller on seeder, people are needed to go to be gone to step on to keep with pin by own body weight
Moisture in soil, so probably due to the firmly uneven of people causes to have an impact the germination percentage of crop.At present, on seeder
Several rollers of the pack roller by roll stand and in roll stand constitute, the axis direction of roller and the advance side of hitching machinery
To perpendicular.During work, pack roller is passed through under the drive of hitching machinery from the ridge sowed, in pack roller self gravitation and
Realize suppression in ridge under the collective effect of external force to being formed in seeding process.This suppression mode there may be during suppression
Because pack roller may produce at any time change to the pressure on ridge platform surface, this suppression mode can to a certain degree affect suppression
Effect, can cause to increase the evaporation of moisture on ridge, this germination percentage to seed and can produce very in growing for later stage crop
Big impact.
The content of the invention
It is an object of the invention to overcome the pack roller for commonly using now during suppression it cannot be guaranteed that pack roller pair
Ridge platform surface pressing is stablized, pressure transient of the pack roller to ridge platform surface during suppression, and pack roller is to soil surface
Pressure can produce large range of change, cause pack roller soil density after suppression uneven and suppress power not during suppressing
Enough the problems such as, a kind of oscillatory type pack roller of hydraulic control of design under the effect of vibration of vibration machine, can increase town
Pressure of the pressure roller to soil, the density for making soil after suppression is more uniformly distributed, and to reduce the lost purpose of soil moisture, moves roller
The striped projection on cylinder surface can reduce the skidding produced during suppression, it is also possible to reduce and move in the course of work roller
Abrasion, increase the service life
The present invention includes fixed roll cylinder, electromagnetic vibration generator, support, dynamic roller, bearing, hydraulic cylinder, 3-position 4-way commutation
Valve, hydraulic pump, connecting bracket, connecting shaft and pipeline, fixed roll cylinder is placed on inside dynamic roller, is passed through between fixed roll cylinder and dynamic roller
Bearing connects.Hydraulic cylinder, three position four-way directional control valve, hydraulic pump, connecting shaft and pipeline constitute hydraulic control system, and hydraulic pump pump leads to
Piping is connected with three position four-way directional control valve, by three position four-way directional control valve control piston in hydraulic cylinder rising and, decline
Or transfixion, when three position four-way directional control valve is located at 1. position, connecting shaft will be moved downward, and pack roller will to the pressure on ground
Increase, when three position four-way directional control valve is located at 3. position, connecting shaft will be moved upwards, and pack roller will reduce to the pressure on ground,
It is now packing state when three position four-way directional control valve is located at 2. position, connecting shaft is motionless by remains stationary, and pack roller is to ground
Pressure will also keep constant, this is conducive to suppression process pack roller to keep pressure stability to ridge platform surface, improves operation matter
Amount.
Two electromagnetic shock generators are symmetrically fixed on its inner lower, electromagnetic shock generator by fixed roll cylinder center line
It is fixed in fixed roll cylinder by support, electromagnetic vibration generator occurs alternately to shake;Two exposed junctions of fixed roll cylinder wear solid
Surely there is connecting bracket, two connecting brackets are connected with hydraulic cylinder, and hydraulic pump is connected by three position four-way directional control valve with hydraulic cylinder,
Hydraulic fluid is delivered to hydraulic cylinder by hydraulic pump by conduit under fluid pressure, can be realized to connection by controlling three position four-way directional control valve
The rising of frame, decline or static, and then can control to move pressure of the roller to the surface of ridge platform, when three position four-way directional control valve is put
It is now packing state when centre position, i.e. pressure remained steady of the pack roller to ridge platform surface also just can be realized to ridge
The uniform suppression on platform surface.
The dynamic roller surface has two anti-slip stripeds, and anti-slip striped can increase the wearability of dynamic roller and tough
Property, increase the service life.Every anti-slip striped has two stripe projections and is distributed on dynamic roller circumferential surface, and adjacent strip
At a distance of being L between line projection, wherein the span of L is 100mm~120mm, and the contour curve of striped bossing is heart-shaped
The parametric equation of line,A part, wherein:The span of θ is 0≤θ≤π, and X is
The axis direction of dynamic roller, wherein 16mm≤X≤20mm, Y are the raised height of the normal direction striped of roller surface, wherein
3mm≤Y≤12mm。
The vibration frequency of the electromagnetic shock generator is n1, wherein 50Hz≤n1≤100Hz;Electromagnetic shock generator
Vibrations power is p1, wherein 100w≤p1≤150w。
The fixed roll cylinder internal diameter is r1, 30mm≤r1≤ 60mm, external diameter is R1, 35mm≤R1≤ 70mm, R1≥r1+3mm;It is dynamic
Roller internal diameter is r2, 50mm≤r2≤ 155mm, r2≥R1+ 15mm, external diameter is R2, 55mm≤R2≤ 160mm, R2≥r2+3mm;
The support is tetrahedral structure, and its four planes are respectively X-O-Y, X-O-Z, Y-O-Z in space coordinates
The inclined-plane composition that three basal planes and one are intersected with three faces, inclined-plane is with X-O-Y faces angleInclined-plane and X-O-Z and Y-
O-Z faces angle isWherein
When electromagnetic vibration generator occurs alternately to vibrate, fixed roll cylinder can be made also to vibrate, and then dynamic roller also vibrates, and realizes
To the suppression above ridge, suppression power is more uniform, and the density of soil can effectively reduce scattering and disappearing for moisture also than more uniform.
In order to solve most of pack rollers to ground pressure not enough and it is uneven to ridge platform pressure the problems such as, the present invention is adopted
Electromagnetic vibration generator to realize the uniform suppression to soil, can make the close of soil surface producing uniform suppression power
Degree is uniform, reduces scattering and disappearing for moisture, is conducive to the growth and development of crop under drought environment, and the present invention is relatively more in application at present
Pack roller connecting shaft on control pressure of the pack roller to ridge platform with hydraulic control system, pack roller can be made to ridge platform surface
Pressure is more stable, and more preferably, this growth to the crop under drought environment is particularly important to operation effectiveness, and dynamic roller table
Face has striped raised, it is possible to reduce skids and weares and teares.
Compared with prior art beneficial effect is the present invention:
The present invention be directed to the excursion that roller pressure is suppressed in the pack roller course of work it is larger and to the pressure of soil not
Uniform problem, devises a kind of pack roller stable equipped with electric and magnetic oscillation generating means and hydraulic control pressure.Electric and magnetic oscillation
Generator can be such that pack roller is more uniformly distributed to the pressure of soil in the course of the work, and then edaphic density is also just relatively equal
Even, this is very favorable for more arid area water conservation, is also advantageous for the growth and development of crop.The design utilizes liquid
The load loop of press pump pressurize, it is ensured that larger change, phase are not produced to the pressure of ridge platform in the pack roller course of work
Relatively for the relatively more extensive common pack roller of application at present, the high suppression quality of comparison can be obtained, can be reduced well
Moisture scatters and disappears, and this growth to crop under drought environment is very important, and dynamic roller surface has striped raised, can in case
Only skidding is produced in the suppression course of work, there is higher work quality.
Description of the drawings
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the hydraulic control system schematic diagram of the present invention.
Fig. 3 is the dynamic drum structure schematic diagram of the present invention.
Specific embodiment
Refer to shown in Fig. 1, Fig. 2 and Fig. 3, the present invention includes fixed roll cylinder 1, electromagnetic vibration generator 2, support 3, dynamic roller
4, bearing 5, hydraulic cylinder 6, three position four-way directional control valve 7, hydraulic pump 8, connecting bracket 9, connecting shaft 10 and pipeline 11, fixed roll cylinder 1 is put
Put inside dynamic roller 4, connected by bearing 5 between fixed roll cylinder 1 and dynamic roller 4.Hydraulic cylinder 6, three position four-way directional control valve 7, liquid
Press pump 8, connecting shaft 10 and pipeline 11 constitute hydraulic control system, and the pump of hydraulic pump 8 is by pipeline 11 and the phase of three position four-way directional control valve 7
Connection, by three position four-way directional control valve 7 control the inner carrier of hydraulic cylinder 6 rising and, decline or transfixion, when 3-position 4-way is changed
When being located at 1. position to valve 7, connecting shaft 10 will be moved downward, and pack roller will increase the pressure on ground, when 3-position 4-way commutation
When valve 7 is located at 3. position, connecting shaft 10 will be moved upwards, and pack roller will reduce to the pressure on ground, when three position four-way directional control valve 7
Positioned at 2. position when, be now packing state, connecting shaft 10 is motionless by remains stationary, and pack roller also will keep to the pressure on ground
Constant, this is conducive to suppression process pack roller to keep the pressure stability to ridge platform surface, improves operation quality.
Two electromagnetic shock generators 2 are symmetrically fixed on its inner lower by the center line of fixed roll cylinder 1, and electromagnetic shock occurs
Device 2 is fixed in fixed roll cylinder 1 by support 3, and electromagnetic vibration generator 2 occurs alternately to shake;Two exposed junctions of fixed roll cylinder 1 are equal
Wear and be fixed with connecting bracket 9, two connecting brackets 9 are connected with hydraulic cylinder 6, hydraulic pump 8 by three position four-way directional control valve 7 with
Hydraulic cylinder 6 is connected, and hydraulic fluid is delivered to hydraulic cylinder 6 by hydraulic pump 8 by conduit under fluid pressure, by controlling three position four-way directional control valve 7
The rising to connecting bracket 9 can be realized, declined or static, and then dynamic pressure of the roller 4 to the surface of ridge platform can be controlled, when
It is now packing state when three position four-way directional control valve 7 is placed in into centre position, i.e., pack roller keeps steady to the pressure on ridge platform surface
It is fixed, also can just realize the uniform suppression to ridge platform surface.
The surface of dynamic roller 4 has two anti-slip stripeds 12, and anti-slip striped 12 can increase the wear-resisting of dynamic roller 1
Property and toughness, increase the service life.Every anti-slip striped 12 has two stripe projections and is distributed in the circumferential surface of dynamic roller 4
On, and adjacent stripes projection between at a distance of be L, wherein the span of L be 100mm~120mm, the profile of striped bossing
Curve is the parametric equation of cardioid,A part, wherein:The span of θ is 0
≤ θ≤π, X are the axis direction of roller, wherein 16mm≤X≤20mm, and Y is that the normal direction striped of roller surface is raised
Height, wherein 3mm≤Y≤12mm.
The vibration frequency of the electromagnetic shock generator 2 is n1, wherein 50Hz≤n1≤100Hz;Electromagnetic shock generator 2
Vibrations power be p1, wherein 100w≤p1≤150w。
The internal diameter of fixed roll cylinder 1 is r1, 30mm≤r1≤ 60mm, external diameter is R1, 35mm≤R1≤ 70mm, R1≥r1+3mm;
The internal diameter of dynamic roller 4 is r2, 50mm≤r2≤ 155mm, r2≥R1+ 15mm, external diameter is R2, 55mm≤R2≤ 160mm, R2≥r2+3mm;
The support 3 is tetrahedral structure, and its four planes are respectively X-O-Y, X-O-Z, Y-O-Z in space coordinates
The inclined-plane composition that three basal planes and one are intersected with three faces, inclined-plane is with X-O-Y faces angleInclined-plane and X-O-Z and Y-
O-Z faces angle isWherein
When electromagnetic vibration generator 2 occurs alternately to vibrate, fixed roll cylinder 1 can be made also to vibrate, and then dynamic roller 4 also vibrates,
Realize that, to the suppression above ridge, suppression power is more uniform, the density of soil can effectively reduce dissipating for moisture also than more uniform
Lose.
Claims (7)
1. the oscillatory type pack roller of a kind of hydraulic control, it is characterised in that:Including fixed roll cylinder (1), electromagnetic vibration generator (2),
Support (3), dynamic roller (4), bearing (5), hydraulic cylinder (6), three position four-way directional control valve (7), hydraulic pump (8), connecting bracket (9),
Connecting shaft 10 and pipeline 11, fixed roll cylinder (1) is placed on dynamic roller (4) inside, and axle is passed through between fixed roll cylinder (1) and dynamic roller (4)
Hold (5) connection;Hydraulic cylinder (6), three position four-way directional control valve (7), hydraulic pump (8), connecting shaft (10) and pipeline (11) constitute hydraulic pressure
Control system, hydraulic pump (8) pump is connected by pipeline (11) with three position four-way directional control valve (7), by three position four-way directional control valve
(7) control hydraulic cylinder (6) inner carrier rising and, decline or transfixion;Two electromagnetic shock generators (2) are by fixed roll cylinder
(1) center line is symmetrically fixed on its inner lower, and electromagnetic shock generator (2) is fixed in fixed roll cylinder (1) by support (3),
Electromagnetic vibration generator (2) occurs alternately to shake;Two exposed junctions of fixed roll cylinder (1) wear and are fixed with connecting bracket (9), and two
Individual connecting bracket (9) is connected with hydraulic cylinder (6), and hydraulic pump (8) is connected by three position four-way directional control valve (7) with hydraulic cylinder (6),
Hydraulic fluid is delivered to hydraulic cylinder (6) by hydraulic pump (8) by conduit under fluid pressure, can be real by controlling three position four-way directional control valve (7)
Rising now to connecting bracket (9), decline or static, and then dynamic pressure of the roller (4) to the surface of ridge platform can be controlled, as general
It is now packing state when three position four-way directional control valve (7) is placed in centre position.
2. the oscillatory type pack roller of a kind of hydraulic control according to claim 1, it is characterised in that:The dynamic roller (4)
Surface has two anti-slip stripeds (12).
3. the oscillatory type pack roller of a kind of hydraulic control according to claim 2, it is characterised in that:It is described to prevent beating per bar
Draw runner line (12) has two stripe projections and is distributed on dynamic roller (4) circumferential surface, and is apart between adjacent stripes projection
The span of L, wherein L is 100mm~120mm, and the contour curve of striped bossing is the parametric equation of cardioid,A part, wherein:The span of θ is 0≤θ≤π, and X is the axis of roller
Direction, wherein 16mm≤X≤20mm, Y are the raised height of the normal direction striped of roller surface, wherein 3mm≤Y≤
12mm。
4. the oscillatory type pack roller of a kind of hydraulic control according to claim 1, it is characterised in that:The electromagnetic shock is sent out
The vibration frequency of raw device (2) is n1, wherein 50Hz≤n1≤100Hz;The vibrations power of electromagnetic shock generator (2) is p1, wherein
100w≤p1≤150w。
5. the oscillatory type pack roller of a kind of hydraulic control according to claim 1, it is characterised in that:The fixed roll cylinder (1)
Internal diameter is r1, 30mm≤r1≤ 60mm, external diameter is R1, 35mm≤R1≤ 70mm, R1≥r1+3mm;Dynamic roller (4) internal diameter is r2,
50mm≤r2≤ 155mm, r2≥R1+ 15mm, external diameter is R2, 55mm≤R2≤ 160mm, R2≥r2+3mm。
6. the oscillatory type pack roller of a kind of hydraulic control according to claim 1, it is characterised in that:The support (3) is
Tetrahedral structure, its four planes are respectively the X-O-Y in space coordinates, tri- basal planes of X-O-Z, Y-O-Z and one with
The intersecting inclined-plane composition in three faces, inclined-plane is with X-O-Y faces angleInclined-plane is with X-O-Z and Y-O-Z faces angleWherein。
7. the oscillatory type pack roller of a kind of hydraulic control according to claim 1, it is characterised in that:When 3-position 4-way commutation
Valve (7) positioned at 1. position when, connecting shaft (10) will be moved downward, and pack roller will increase the pressure on ground, when 3-position 4-way is changed
To valve (7) positioned at 3. position when, connecting shaft (10) will be moved upwards, and pack roller will reduce to the pressure on ground, work as 3-position 4-way
Reversal valve (7) positioned at 2. position when, be now packing state, connecting shaft (10) is motionless by remains stationary, and pack roller is to ground
Pressure will also keep constant, and this is conducive to suppression process pack roller to keep the pressure stability to ridge platform surface, improves operation quality.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610871403.2A CN106612661B (en) | 2016-10-05 | 2016-10-05 | A kind of oscillatory type pack roller of hydraulic control |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610871403.2A CN106612661B (en) | 2016-10-05 | 2016-10-05 | A kind of oscillatory type pack roller of hydraulic control |
Publications (2)
Publication Number | Publication Date |
---|---|
CN106612661A true CN106612661A (en) | 2017-05-10 |
CN106612661B CN106612661B (en) | 2018-11-02 |
Family
ID=58854236
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201610871403.2A Expired - Fee Related CN106612661B (en) | 2016-10-05 | 2016-10-05 | A kind of oscillatory type pack roller of hydraulic control |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN106612661B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107347267A (en) * | 2017-08-19 | 2017-11-17 | 合肥耀世同辉科技有限公司 | A kind of land presser and its operating method |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1430868A (en) * | 2003-01-23 | 2003-07-23 | 吉林大学 | Bionic gentle suppression roller |
CN2652988Y (en) * | 2003-10-13 | 2004-11-03 | 柏飞 | Vibrative compacting wheel |
US20110039671A1 (en) * | 2009-08-11 | 2011-02-17 | Chou Chih Huang | Roller structure of a business machine |
CN202218508U (en) * | 2011-08-12 | 2012-05-16 | 李学甫 | Vibrating interval type compacting machine |
US20130115001A1 (en) * | 2011-11-09 | 2013-05-09 | Caterpillar Paving Products Inc. | Releasably mounted scraper |
CN105075430A (en) * | 2015-09-02 | 2015-11-25 | 河南田冠农业机械制造有限公司 | Roller of grain seedling compacting machine and grain seedling compacting machine |
-
2016
- 2016-10-05 CN CN201610871403.2A patent/CN106612661B/en not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1430868A (en) * | 2003-01-23 | 2003-07-23 | 吉林大学 | Bionic gentle suppression roller |
CN2652988Y (en) * | 2003-10-13 | 2004-11-03 | 柏飞 | Vibrative compacting wheel |
US20110039671A1 (en) * | 2009-08-11 | 2011-02-17 | Chou Chih Huang | Roller structure of a business machine |
CN202218508U (en) * | 2011-08-12 | 2012-05-16 | 李学甫 | Vibrating interval type compacting machine |
US20130115001A1 (en) * | 2011-11-09 | 2013-05-09 | Caterpillar Paving Products Inc. | Releasably mounted scraper |
CN105075430A (en) * | 2015-09-02 | 2015-11-25 | 河南田冠农业机械制造有限公司 | Roller of grain seedling compacting machine and grain seedling compacting machine |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107347267A (en) * | 2017-08-19 | 2017-11-17 | 合肥耀世同辉科技有限公司 | A kind of land presser and its operating method |
Also Published As
Publication number | Publication date |
---|---|
CN106612661B (en) | 2018-11-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN205408439U (en) | Layer depth pine soil preparation combined operation is divided machine to autovibration formula | |
CN106612661A (en) | Hydraulically-controlled vibrating type suppressing roller | |
CN103891438A (en) | Seedbed soil preparation combined operating machine | |
CN208219613U (en) | A kind of hydraulic engineering fills vibrating roller with the earthwork | |
CN207022387U (en) | One kind is used for multirow self-walking intelligent garlic planting machine slicking-in roller | |
CN106489313B (en) | A kind of comprehensive vibration-type pack roller | |
CN207766800U (en) | Flatten suppression device to a kind of easy alfalfa cultivation | |
CN203859992U (en) | Compressing machine for deep soil layer of soil box | |
CN205249759U (en) | Seeding rolls dark covering device of limit | |
CN201142838Y (en) | Seed protecting machine with synchronous flexible belt | |
CN205142800U (en) | Dark pine hack all -in -one | |
CN205040181U (en) | Be used for soil to raze machine of arable land out | |
CN204859974U (en) | Two ditch ditching machines of chinese yam | |
CN206640965U (en) | A kind of multi-functional land presser of novel agricultural | |
CN202005134U (en) | Ridging seeder | |
CN209669816U (en) | A kind of earth material crushing failure at high speed trough forming system | |
CN201403377Y (en) | Film pressing wheel for rotary plowing, ridging and filming combined machine | |
CN206229659U (en) | A kind of composite fertilizer material particle screen selecting vibrating device | |
CN204906999U (en) | Telescopic paddy field levelling machine | |
CN206728542U (en) | Four bars that misplace vibrate layer by layer manuring plough | |
CN106888582A (en) | A kind of soil jolter | |
CN105532106A (en) | Saline-alkali land improving device | |
CN206365309U (en) | A kind of vega pipe laying laminating machine film pressing device | |
CN203884146U (en) | Soil covering and pressing machine | |
CN104641746A (en) | Semi-suspension combined machine for traction, turnover, tillage, soil preparation and sowing |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181102 Termination date: 20211005 |