CN103918362B - The bionical pack roller of a kind of profiling - Google Patents
The bionical pack roller of a kind of profiling Download PDFInfo
- Publication number
- CN103918362B CN103918362B CN201410177756.3A CN201410177756A CN103918362B CN 103918362 B CN103918362 B CN 103918362B CN 201410177756 A CN201410177756 A CN 201410177756A CN 103918362 B CN103918362 B CN 103918362B
- Authority
- CN
- China
- Prior art keywords
- roller
- hole
- bionical
- pack roller
- pack
- 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
Links
Landscapes
- Soil Working Implements (AREA)
Abstract
The invention discloses the bionical pack roller of a kind of profiling, be intended to the roller surface adhesion soil solving pack roller existence conventional in prior art, uneven and the pack roller of soil tight ness rating after suppression is to the inadequate shortcoming of earth pack power, the bionical pack roller of a kind of profiling of the present invention, comprise a pack roller roller and a central shaft, pack roller roller surface is distributed with bionical shell fragment, central shaft is installed with the axle collar, between the axle collar and bionical shell fragment, elastic spokes is installed, bionical shell fragment on roller is that imitative ostrich pawl toe contour shape and ostrich are run designed by process median claw toe and soil contact process, in motion process, shell fragment inserts soil, not only there is good fixation, and can effectively prevent pack roller from skidding, ground profiling is carried out by the flexible of elastic spokes, to soil compaction better effects if, pressure is larger, one deck nylon layer that pack roller Surface heat-treatent is formed, makes pack roller not clay in the course of the work.
Description
Technical field
The invention belongs to the bionical pack roller of a kind of profiling in agricultural machinery technological field.
Background technology
Pack roller is the one of agricultural machinery, and effect is after planting by soil compaction compacting, soil density is increased and is beneficial to keep soil moisture, be convenient to seed sprouting and emerge.Before pack roller is not applied, peasant steps on soil at the sowing rear foot and relies on the gravity of human body to make soil compaction compacting, such method inefficiency and soil compaction is uneven.People have invented pack roller, are used for substituting soil compaction compacting after planting manually.Current pack roller is made up of roll stand and the several rollers be arranged in roll stand, the axis of its roller and the longitudinal axis (i.e. the direction of advance of roll stand) of roll stand perpendicular.During operation, pack roller drives by hitching machinery, and ridge platform after planting rolls across, and the dependence gravity of pack roller itself and additional pressure are by soil compaction compacting like this.Adhesion soil phenomenon is there is in such pack roller when operation; because soil during sowing is generally containing larger moisture; such soil has certain viscosity; when pack roller rolls across soil; easy adhesion soil; affect operation quality, when adhesion soil is serious, the soil removed and stick in pack roller surface must be shut down.In order to solve adhesion soil issues, people have added rubber sleeve outside pack roller, certain gap is had between rubber sleeve and pack roller body, rubber sleeve continuous creeping deformation when pack roller rolls, soil is made to be not easy adhesion on the coat, this method alleviates the degree of pack roller adhesion soil, but there is following shortcoming: 1, rubber sleeve adds pack roller cost; 2, operation quality is bad, and the soil tight ness rating that pack roller was suppressed is uneven; 3, pack roller is inadequate to the pressure of soil in work process.
Summary of the invention
The object of the invention is to overcome the uneven and pack roller of the adhesion soil existing for pack roller, the soil tight ness rating after suppression that generally use now to the inadequate shortcoming of earth pack power, there is provided a kind of profiling bionical pack roller, to reach the adhesion degree reducing soil and pack roller, after making suppression, soil tight ness rating is even, increase pack roller to the object of the pressure of soil, technical scheme of the present invention is as follows:
The bionical pack roller of a kind of profiling of the present invention, comprise a pack roller roller and a central shaft, it is characterized in that: pack roller roller surface is distributed with bionical shell fragment, and central shaft is installed with the axle collar, between the axle collar and bionical shell fragment, elastic spokes is installed.
Further technical scheme comprises: described elastic spokes comprises support bar, sleeve, baffle plate, No. 1 spring and No. 2 springs, support bar stretches into sleeve upper end, in support bar bottom and sleeve, a cylindrical shield welds together, two end faces of baffle plate weld together with one end of No. 1 spring and No. 2 springs respectively, the other end of No. 1 spring and No. 2 springs then welds with the inwall of two end caps of sleeve, supporting bar top has through hole, sleeve bottom is welded with a connecting rod, and there is through hole the bottom of connecting rod equally.
Described bionical shell fragment contour surface equation is with equation y=-0.7571x
2-0.0857 is plain line, with equation y=-0.0554z
2+ 0.0305z-0.0733 is crestal line, and plain line moves along crestal line and formed, and wherein: x is the axis direction of roller, y is the normal direction of roller surface, and z is the tangential direction of roller surface, and initial point is positioned on roller surface.
The inner side of described bionical shell fragment is fixed with lug, lug has the through hole for being connected with the support bar in elastic spokes.
Described bionical shell fragment at pack roller roller surface according to two trigonometric function curve distribution, article two, trigonometric function is symmetrical according to pack roller roller rotating direction center line, curvilinear equation is: y=Asin (6 π x/D)+B, wherein: x represents the circumferencial direction of roller, the normal direction of y representative and roller surface, D is pack roller diameter, A and B is constant, and A span is 50-100mm; B span is 100-200mm.
Described central shaft is welded with six axle collars, the bionical shell fragment of relevant position on the corresponding pack roller roller of difference, these six axle collars comprise four three hole axle collars and two six hole axle collars, each three hole axle collars process three holes, and be uniformly distributed, each six hole axle collars process six holes, is uniformly distributed, at the axle collar circumferentially, first hole of first six hole axle collar and a hole of first three hole axle collar are 30 degree; First hole of second three hole axle collar and a hole of first three hole axle collar are 60 degree, the position in the hole of the 3rd the three hole axle collars is identical with the position in the hole of first three hole axle collar, the position in the hole of second six hole axle collar is identical with the position in the hole of first six hole axle collar, and the position of the 4th the three hole axle collars is identical with the position in the hole of first three hole axle collar.
The present invention compared with prior art beneficial effect is:
The bionical pack roller of a kind of profiling of the present invention is serious for clay surperficial in the pack roller course of work and to the inadequate problem of ground pressure, devises a kind of bionical elastic piece structure and arrangement mode thereof and can carry out the elastic spokes of ground profiling.Bionical shell fragment on pack roller roller is that imitative ostrich pawl toe contour shape and ostrich are run designed by process median claw toe and soil contact process, and in motion process, shell fragment inserts soil, not only has good fixation, and can effectively prevent pack roller from skidding; The elastic spokes carrying out ground profiling is directly connected with bionical shell fragment, change the mode that ground profiling is set in the past in suppression roll stand, and suppression roll stand and farm machinery are adopted be rigidly connected, ground profiling is carried out by the flexible of elastic spokes, pack roller is to soil compaction better effects if compared with the former, and pressure is larger; One deck nylon layer that pack roller Surface heat-treatent is formed, makes pack roller not clay in the course of the work.
Accompanying drawing explanation
Fig. 1 is the axonometric projection graph of the bionical pack roller structure composition of a kind of profiling of the present invention;
Fig. 2 is the left view of the bionical pack roller structure composition of a kind of profiling of the present invention;
The front view of elastic spokes of Fig. 3 for adopting in the bionical pack roller of a kind of profiling of the present invention;
The axonometric projection graph of central shaft of Fig. 4 for adopting in the bionical pack roller of a kind of profiling of the present invention;
Fig. 5 is the trigonometric function curved arrangement mode expanded view of bionical shell fragment set in the bionical pack roller of a kind of profiling of the present invention;
Fig. 6 is the front view of bionical elastic piece structure composition set on the bionical pack roller of a kind of profiling of the present invention;
Fig. 7 is the left view of bionical elastic piece structure composition set on the bionical pack roller of a kind of profiling of the present invention;
Fig. 8 is the vertical view of bionical elastic piece structure composition set on the bionical pack roller of a kind of profiling of the present invention;
Wherein: 1. central shaft, the 2. axle collar, 3. elastic spokes, 4. pack roller roller, 5. lug, 6. pin, 7. support bar, 8. sleeve, 9. baffle plate, No. 10.1 springs, No. 11.2 springs, 12. bionical shell fragments, 13. connecting rods, the 14. 6 hole axle collars, the 15. 3 hole axle collars.
Embodiment
Below in conjunction with accompanying drawing, the present invention is explained in detail:
Consult Fig. 1 and Fig. 2, the bionical pack roller of a kind of profiling of the present invention comprises a central shaft 1, pack roller roller 4 elastic spokes 3 identical with n structure.
The surface of described pack roller roller 4 has can increase pack roller and soil contact force, and can play the bionical shell fragment 12 of solid native effect, and bionical shell fragment 12 is on the surface of pack roller roller 4 according to trigonometric function curved arrangement, and curvilinear equation is:
y＝Asin(6πx/D)+B
Wherein: x represents the circumferencial direction of roller, y represents the normal direction of roller surface; A, B are constant, and A span is 50-100mm; B span is 100-200mm; D is the diameter of pack roller.
And two trigonometric function curves are symmetrical about the center line of pack roller rotating direction, as Fig. 5, this symmetric arrays can make pack roller roller uniform force, working stability.Bionical shell fragment 12 on pack roller roller is distributed in trigonometric function curve wave trough position, position of center line and crest location, bionical shell fragment 12 on three positions is positioned at same plane with the corresponding axle collar 2 respectively, and bionical shell fragment 12 is radially connected with the hole on the axle collar 2 by elastic spokes 3, connected mode adopts pin to connect.
The arrangement of the bionical shell fragment 12 on Article 2 trigonometric function curve and the connection of bionical shell fragment 12 and elastic spokes 3, symmetrical about pack roller direction of advance with the arrangement of bionical shell fragment 12 on Article 1 trigonometric function curve and bionical shell fragment 12 with the connection of elastic spokes 3, as Fig. 5.Weld a lug 5 in the centre of bionical shell fragment 12 crestal line simultaneously, processing a diameter vertically in lug 5 center is the hole of 6-18mm, support bar 7 one end in elastic spokes 3 is connected with lug 5 pin 6, and elastic spokes 3 and lug 5 can be relatively rotated.The bottom of the connecting rod 13 in elastic spokes 3 is same with the axle collar 2 to be connected with pin 6, and elastic spokes 3 and the axle collar 2 can be relatively rotated.
Consult Fig. 3, described elastic spokes 3 is made up of support bar 7, sleeve 8, baffle plate 9, No. 1 spring 10 and No. 2 springs 11.Support bar 7 one end is provided with radial direction through hole, and the diameter in its hole is identical with the through-hole diameter on the axle collar 2, and the other end of support bar 7 and the baffle plate 9 of a circle weld together, and the axis of rotation conllinear of support bar 7 and baffle plate 9, the diameter of baffle plate 9 is less than the internal diameter of sleeve 8.Two end faces of baffle plate 9 weld together with an end face of No. 1 spring 10 and No. 2 springs 11 respectively, and No. 1 spring 10 is then connected with the contact internal walls of two end caps of sleeve 8 with the other end of No. 2 springs 11, and same employing is fixedly connected with.One end that support bar 7 connects baffle plate 9 puts in sleeve 8, and like this when applying certain load to elastic spokes 3, support bar 7 can move reciprocatingly under No. 1 spring 10 and the effect of No. 2 spring 11 elastic force.
Consult Fig. 4, described central shaft 1 is welded with six axle collars 2, the bionical shell fragment 12 of relevant position on the corresponding pack roller roller 4 of difference, these six axle collars 2 comprise four three hole axle collars 15 and two six hole axle collars 14, each three hole axle collars 15 process three holes, and is uniformly distributed, each six hole axle collars 14 process six holes, be uniformly distributed, and meet: at the axle collar 2 circumferentially, first hole of first six hole axle collar 14 and a hole of first three hole axle collar 15 are 30 degree; First hole of second three hole axle collar 15 and a hole of first three hole axle collar 15 are 60 degree, the position in the hole of the 3rd the three hole axle collars 15 is identical with the position in the hole of first three hole axle collar 15, the position in the hole of second six hole axle collar 14 is identical with the position in the hole of first six hole axle collar 14, and the position of the 4th the three hole axle collars 15 is identical with the position in the hole of first three hole axle collar 15.On each axle collar 2 the porose hole dimension with lug 5 is processed identical.
Consult Fig. 5, first described three hole axle collar 15 are connected with the bionical shell fragment 12 of three in the wave trough position being positioned at Article 1 trigonometric function curve by three elastic spokes 3; First six hole axle collar 14 is connected with the bionical shell fragment 12 of six on the position of center line being positioned at Article 1 trigonometric function curve by six elastic spokes 3; Second three hole axle collar 15 is connected with the bionical shell fragment 12 of three on the crest location being positioned at first trigonometric function curve by three elastic spokes 3; 3rd the three hole axle collars 15 are connected with the bionical shell fragment 12 of three in the wave trough position being positioned at Article 2 trigonometric function curve by three elastic spokes 3; Second six hole axle collar 14 is connected with the bionical shell fragment 12 of six on the position of center line being positioned at Article 2 trigonometric function curve by six elastic spokes 3; 4th the three hole axle collars 15 are connected with the bionical shell fragment 12 of three on the crest location being positioned at Article 2 trigonometric function curve by three elastic spokes.
The described bionical pack roller of a kind of profiling can regulate self structure size as required and increase and decrease the quantity of bionical shell fragment 12 and elastic spokes 3.
Consult Fig. 6 to Fig. 8, the geometric profile of the present invention in conjunction with ostrich pawl toe and the whole contact process of its run process median claw toe and soil, by the edge analysis to ostrich pawl toe, devise the geometric profile of bionical shell fragment 12, determine the contour surface equation of the bionical shell fragment 12 that can carry out on the bionical pack roller of ground profiling of the present invention.The contour surface equation of bionical shell fragment 12 is with equation y=-0.7571x
2-0.0857 is plain line, with equation y=-0.0554z
2+ 0.0305z-0.0733 is crestal line, and plain line moves along crestal line and formed.The contour structure of bionical shell fragment 12 is obtained by punching press, and the equation of the punching press mouth curve formed on pack roller surface after punching press is:
Wherein: A is constant, span 0.5-1.5; θ ∈ [0 °, 180 °], x represents the tangential direction of roller surface, and y represents the axis direction of roller.
Below in conjunction with two embodiments, the distribution of the bionical shell fragment 12 of the bionical pack roller of a kind of profiling of the present invention is described further:
In order to prevent pack roller surface adhesion soil in operation process, pack roller roller 4 is heated to 140 ~ 260 degrees Celsius, puts it into afterwards and be equipped with in the fluid bed of nylon powder, take out after cooling, surface forms the even nylon layer of thickness.This process not only can make pack roller non-stick earth in the course of the work, and can increase wearability and the toughness of bionical shell fragment 12.In addition, the adhesion of pack roller to soil can also be alleviated by the bionical shell fragment 12 of trigonometric function curved arrangement.
The present invention can carry out the bionical pack roller of ground profiling according to the geometry of pawl toe of ostrich and parameter designing, comprises the structure of the bionical shell fragment 12 on pack roller roller 4 and the ground feeler mechanism of its arrangement mode and pack roller.The body structure of ostrich is applicable to running very much, and speed quickly, in running fast, ostrich foot still can hold on to soil, have benefited from its distinctive pawl toe geometry and to run process median claw toe and soil interaction, these two factors ensure that ostrich can produce in the process of running and good grab native fixation., the mechanism of ground profiling is combined with pack roller cylinder 4 meanwhile, just as the leg of ostrich and the connection of foot, larger pressure is produced to soil, makes it produce the effect of better compacting soil.
In order to solve most of pack roller to the inadequate problem of ground pressure, present invention employs imitated structure, namely for connecting the elastic spokes 3 of pack roller cylinder 4 and central shaft 1, elongate or shorten with the fluctuating on ground, as ostrich leg, in the course of the work larger power is produced to shell fragment, increase the overall pressure to soil of pack roller.Meanwhile, when bionical shell fragment 12 contacts with soil, bionical shell fragment 12 is compressed, and when bionical shell fragment 12 leaves soil, bionical shell fragment 12 outwards ejects under the effect of elastic spokes 3, soil on pack roller can be shaken off.Its profile modeling is: the frame of pack roller and farm machinery are rigidly connected, because pack roller roller 4 and central shaft 1 are connected by elastic spokes 3, when running into protruding ground, pack roller surface pressure increases, elastic spokes 3 compression degree increases, and the relative pack roller roller 4 of central shaft 1 of pack roller moves down; When running into low-lying ground, pack roller surface pressure reduces, and elastic spokes 3 compression degree diminishes, and the central shaft 1 of pack roller is relatively suppressed on roll surface and moved.Thus realize the effect of ground profiling.
Claims (5)
1. the bionical pack roller of profiling, comprise a pack roller roller (4) and a central shaft (1), it is characterized in that: pack roller roller (4) surface distributed has bionical shell fragment (12), central shaft (1) is installed with the axle collar (2), be provided with elastic spokes (3) between the axle collar (2) and bionical shell fragment (12), the contour surface equation of described bionical shell fragment (12) is with equation y=-0.7571x
2-0.0857 is plain line, with equation y=-0.0554z
2+ 0.0305z-0.0733 is crestal line, and plain line moves along crestal line and formed, and wherein: x is the axis direction of roller, y is the normal direction of roller surface, and z is the tangential direction of roller surface, and initial point is positioned on roller surface.
2. according to the bionical pack roller of a kind of profiling according to claim 1, it is characterized in that described elastic spokes (3) comprises support bar (7), sleeve (8), baffle plate (9), No. 1 spring (10) and No. 2 springs (11), support bar (7) stretches in sleeve (8), support bar (7) bottom and baffle plate (9) weld together, two end faces of baffle plate (9) weld together with one end of No. 1 spring (10) and No. 2 springs (11) respectively, the other end of No. 1 spring (10) and No. 2 springs (11) then welds with the inwall of two end caps of sleeve (8), there is through hole on support bar (7) top, sleeve bottom is welded with a connecting rod (13), there is through hole connecting rod (13) bottom equally.
3. according to the bionical pack roller of a kind of profiling according to claim 1, it is characterized in that the inner side of described bionical shell fragment (12) is fixed with lug (5), lug (5) being provided with vertically the through hole for being connected with the support bar (7) in elastic spokes (3).
4. according to the bionical pack roller of a kind of profiling according to claim 1, it is characterized in that described bionical shell fragment (12) on pack roller roller (4) surface according to two trigonometric function curve distribution, article two, trigonometric function curve is arranged symmetrically with according to the median plane of pack roller roller (4) width, curvilinear equation is: y=Asin (6 π x/D)+B, wherein: x represents the circumferencial direction of roller, y represents the normal direction of roller surface; A, B are constant, and A span is 50-100mm; B span is 100-200mm; D is the diameter of pack roller.
5. according to the bionical pack roller of a kind of profiling according to claim 1, it is characterized in that, described central shaft (1) is welded with six axle collars (2), the bionical shell fragment (12) of the upper relevant position of corresponding pack roller roller (4) respectively, these six axle collars (2) comprise four three hole axle collars (15) and two six hole axle collars (14), upper processing three holes of each three hole axle collars (15), and be uniformly distributed, upper processing six holes of each six hole axle collars (14), be uniformly distributed, at the axle collar (2) circumferentially, first hole of first six hole axle collar (14) and a hole of first three hole axle collar (15) are 30 degree, first hole of second three hole axle collar (15) and a hole of first three hole axle collar (15) are 60 degree, the position in the hole of the 3rd the three hole axle collars (15) is identical with the position in the hole of first three hole axle collar (15), the position in the hole of second six hole axle collar (14) is identical with the position in the hole of first six hole axle collar (14), and the position of the 4th the three hole axle collars (15) is identical with the position in the hole of first three hole axle collar (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410177756.3A CN103918362B (en) | 2014-04-29 | 2014-04-29 | The bionical pack roller of a kind of profiling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410177756.3A CN103918362B (en) | 2014-04-29 | 2014-04-29 | The bionical pack roller of a kind of profiling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103918362A CN103918362A (en) | 2014-07-16 |
| CN103918362B true CN103918362B (en) | 2015-12-02 |
Family
ID=51136952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410177756.3A Expired - Fee Related CN103918362B (en) | 2014-04-29 | 2014-04-29 | The bionical pack roller of a kind of profiling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103918362B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105165187B (en) * | 2015-10-21 | 2017-04-12 | 吉林大学 | Bionic curved-surface circular disc fertilization furrow opener |
| CN105594359B (en) * | 2016-01-13 | 2017-06-23 | 吉林大学 | A kind of pack roller with expandable pack roller piece |
| CN108575121A (en) * | 2018-04-09 | 2018-09-28 | 黑龙江八农垦大学 | Overcome the soil layer suppression device that soil adheres to |
| CN112243614B (en) * | 2020-10-30 | 2023-07-07 | 扬州大学 | Pressing stubble cleaning device convenient to transport |
| CN113273326B (en) * | 2021-06-22 | 2022-04-22 | 山东理工大学 | Surface self-deformation type anti-soil-sticking press roller based on bionics |
| CN117413648B (en) * | 2023-12-19 | 2024-02-09 | 贵州中昂科技有限公司 | Controllable farming seeding equipment of interval |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL8602430A (en) * | 1986-09-26 | 1988-04-18 | Lely Nv C Van Der | SOIL TILLER. |
| EP0673593B1 (en) * | 1994-03-16 | 1998-08-26 | R J Herbert Engineering Ltd | Method and apparatus for conveying crop or the like |
| DE20106545U1 (en) * | 2001-04-14 | 2001-06-28 | Hendlmeier Konrad | Soil consolidation device |
| CN1170467C (en) * | 2003-01-23 | 2004-10-13 | 吉林大学 | Bionic gentle suppression roller |
| CN201219353Y (en) * | 2008-06-25 | 2009-04-15 | 杨华亮 | Pressing roller of non-ploughing combined fertilizer and seeder |
| CN102210203B (en) * | 2011-05-20 | 2012-07-04 | 吉林大学 | Corn stubble soil removing roller having bionic geometric structure surface |
| CN203151954U (en) * | 2013-03-21 | 2013-08-28 | 湖南农业大学 | Profiling earthing pressing device |
-
2014
- 2014-04-29 CN CN201410177756.3A patent/CN103918362B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN103918362A (en) | 2014-07-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103918362B (en) | The bionical pack roller of a kind of profiling | |
| CN205793971U (en) | A kind of vibrating compacting ridger | |
| RU116301U1 (en) | ROCKER-COMBINER | |
| US10575455B2 (en) | Press wheel for an agricultural sowing machine | |
| CN108575121A (en) | Overcome the soil layer suppression device that soil adheres to | |
| CN205005618U (en) | Towed anti -wind laminating machine of single file | |
| CN205584750U (en) | Grain seeder earthing suppression wheel | |
| CN204810898U (en) | Double -deck disc type covering device | |
| CN207388140U (en) | A kind of drum brakes sheet mold of adjustable in length | |
| CN205491841U (en) | Straw cutting machine | |
| CN206759963U (en) | A kind of ridger in arch ridge face | |
| CN203952294U (en) | A kind of tealeaves flatting apparatus | |
| CN109548493A (en) | A kind of dedicated anti-sunken pressure stalk string wheel in paddy field | |
| CN204914829U (en) | Rubber outer bottom extrusion device | |
| CN207167015U (en) | A kind of kind ditch furrowing blade applied to buckwheat seeder | |
| CN207219586U (en) | A kind of towed micro- ridge plastic mulching machine of narrow people's animal power | |
| CN207043905U (en) | A kind of large-scale self-aligning bearing inner race R shape trimmers | |
| CN206640965U (en) | A kind of multi-functional land presser of novel agricultural | |
| CN207040681U (en) | A kind of dough former structure | |
| CN205694110U (en) | A kind of rotary tillage land leveller | |
| CN206165679U (en) | Thousand sheets industrialization continuous production width and thickness governing system | |
| CN205389327U (en) | Soil face plate ties breaker | |
| CN210053839U (en) | Fertilizer injection unit is used in rice planting process | |
| CN205395640U (en) | Wide shallow for agricultural of application scope is rolled | |
| CN204211922U (en) | A kind of prevent fabric get around skid lower hold down gag |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| 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: 20151202 Termination date: 20200429 |