CN104813777A - Two-layer disc type covering device and method - Google Patents
Two-layer disc type covering device and method Download PDFInfo
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- CN104813777A CN104813777A CN201510201897.9A CN201510201897A CN104813777A CN 104813777 A CN104813777 A CN 104813777A CN 201510201897 A CN201510201897 A CN 201510201897A CN 104813777 A CN104813777 A CN 104813777A
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Abstract
The invention discloses a two-layer disc type covering device and method. A soil covering disc portion is formed by two groups of discs different in specification. The discs comprise inside discs with the cutting edge plane diameter being 255mm and outside discs with the cutting edge plane diameter being 320mm respectively, the two layers of the discs are connected through studs and share a central shaft to be connected with a rack to form the covering device. By means of the covering device and method, the impact effect of earthflow on seeds during covering can be reduced apparently, and the displacement of seeds is reduced; the two-layer disc type covering device is tested and analyzed through a soil tank experiment and a field experiment and is compared with the effect of an ordinary disc covering device. the experiment result shows that the impact of the two-layer disc type covering device on seeds during covering is small, the seed displacement change is small, the covering thicknesses are consistent, and the sowing uniformity is high.
Description
Technical field
The invention belongs to agricultural machinery technological field, relate to a kind of double-layer circular disc type covering device and method.
Background technology
Covering device is one of main working parts of precision planter, is connected with seeding unit by single articulated form, for the kind subcovering in kind of ditch is tight, and reaches the suitable and uniform object of earthing of earthing amount.The structure of covering device and kinematic parameter decide the service behaviour of covering device, not only affect earthing quality, and affect the actual seed level of seed and spacing in the rows change, and then affect the germination rate of after planting seed, emergence rate and plant field distributing homogeneity.The supporting covering device of current domestic conventional precision planter mostly is double-disk covering device, and its earthing amount is comparatively large, but impacts obviously seed simultaneously, causes seed spacing in the rows and seed level to change greatly, affects seeding quality and seeding accuracy.
Summary of the invention
In order to overcome the defect existed in prior art, the invention provides a kind of double-layer circular disc type covering device and method, is that one obviously can reduce seed displacement variable in earthing process, improves the double-layer circular disc type covering device of seeding accuracy.By observing plain disk formula covering device, in conjunction with earthing operation mechanism, on the basis observing a large amount of field sowing operation, the series of problems such as poor to the seeding uniformity occurred in seeding process, seed level is inconsistent is summarized, in conjunction with earthing operation actual requirement, by changing the number of plies of earthing dish, the size of earthing dish, the arrangement, position relationship etc. of disc change earthing effect.Its technical scheme is as follows:
A kind of double-layer circular disc type covering device, earthing disc portion is made up of the disk that two groups of specifications are different, inboard disc and the cutting edge planar diameter of to be cutting edge planar diameter be respectively 255mm are the outboard disc of 320mm, by Stud connection between two-layer disk, then Universal centre axle to be connected with frame be a covering device entirety.
Preferably, described inner side earthing dish cutting edge planar diameter is 255mm, and plane residing for earthing dish is the sphere of radius 550mm, and outside earthing dish cutting edge planar diameter is 320mm, and plane residing for earthing dish is the sphere of diameter 550mm.
Preferably, the large earthing dish of diameter to be the little earthing dish of 255mm and diameter be 320mm is placed on the inner side and outer side of covering device respectively, by Stud connection, can realize interior outboard disc synchronous axial system.
Preferably, the distance between inside and outside two-layer disk is 35mm.
A kind of double-layer circular disc type earthing method, comprises the following steps:
The first step: fall into after the kind ditch that plough holds successfully until seed, the covering device being hinged on sower rear starts earthing operation;
Second step: in earthing process, be arranged on the less disk of diameter inside covering device and first contact that moisture content inside kind of ditch is higher, the good soil of physical behavior, along with the advance of trailing equipment, a small amount of soil is covered the surface of the seed by inner side earthing dish, completes first time earthing operation;
3rd step: and then, enough soil is covered an earthing surface by outboard disc, completes the operation of second time earthing;
4th step: so far, whole earthing operation completes.
Beneficial effect of the present invention:
The present invention obviously can reduce the percussion of soil stream to seed in earthing process, reduces seed displacement, improves seeding accuracy; By gradation earthing, when can ensure earthing, seed can touch the higher soil of moisture content, reduces the mixing of dry wet soil, is conducive to seed sprouting.By soil box experiment and field trial, test analysis is carried out to invented double-layer circular disc type covering device, and contrast with plain disk formula covering device effect.Experimental result shows in double-layer circular disc type covering device earthing process less to the impact of seed, and seed change in displacement is less, and thickness of earth covering is more consistent, and seeding uniformity is high.
Accompanying drawing explanation
Fig. 1 is the structural representation of double-layer circular disc type covering device.
Embodiment
Below in conjunction with the drawings and specific embodiments, technical scheme of the present invention is described in more detail.
Fig. 1 illustrates the structure of double-layer circular disc type covering device.In FIG, outside earthing dish 1 thickness is 5mm, and cutting edge planar diameter is 320mm, and cutting edge plane place spherical radius is 550mm; Inner side earthing dish 2 thickness is 5mm, and cutting edge planar diameter is 255mm, and cutting edge plane place spherical radius is 550mm; Covering device frame 3 is welded by band iron, and frame top transverse slat is drilled with the through hole that 4 diameters are φ 10mm, for installing earthing dish angle connection device; Subtended angle adjusting device 4 is connected to form by two bendings, is arranged on the both sides of frame respectively.
Outside earthing dish 1 passes through together with Stud connection with inner side earthing dish 2, and can realize synchronous axial system, two-layer earthing dish is connected with the axle sleeve on angle regulator 4 by central shaft, and angle regulator is bolted and is fixed in frame.
Soil bin test proves, when when inner side, earthing dish diameter is 255mm, outside earthing dish diameter is 320mm, earthing speed is 0.85m/s, covering device subtended angle is 50 °, it is 0.27mm that covering device touches the average displacement after soil to seed, substantially reduces seed displacement.
The above; be only the present invention's preferably embodiment; protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses, the simple change of the technical scheme that can obtain apparently or equivalence are replaced and are all fallen within the scope of protection of the present invention.
Claims (5)
1. a double-layer circular disc type covering device, it is characterized in that: earthing disc portion is made up of the disk that two groups of specifications are different, inboard disc and the cutting edge planar diameter of to be cutting edge planar diameter be respectively 255mm are the outboard disc of 320mm, by Stud connection between two-layer disk, then Universal centre axle to be connected with frame be a covering device entirety.
2. double-layer circular disc type covering device according to claim 1, it is characterized in that: described inner side earthing dish cutting edge planar diameter is 255mm, plane residing for earthing dish is the sphere of radius 550mm, and outside earthing dish cutting edge planar diameter is 320mm, and plane residing for earthing dish is the sphere of diameter 550mm.
3. double-layer circular disc type covering device according to claim 1, it is characterized in that: the large earthing dish of diameter to be the little earthing dish of 255mm and diameter be 320mm is placed on the inner side and outer side of covering device respectively, by Stud connection, interior outboard disc synchronous axial system can be realized.
4. double-layer circular disc type covering device according to claim 1, is characterized in that: the distance between inside and outside two-layer disk is 35mm.
5. a double-layer circular disc type earthing method, is characterized in that: comprise the following steps:
The first step: fall into after the kind ditch that plough holds successfully until seed, the covering device being hinged on sower rear starts earthing operation;
Second step: in earthing process, be arranged on the less disk of diameter inside covering device and first contact that moisture content inside kind of ditch is higher, the good soil of physical behavior, along with the advance of trailing equipment, a small amount of soil is covered the surface of the seed by inner side earthing dish, completes first time earthing operation;
3rd step: and then, enough soil is covered an earthing surface by outboard disc, completes the operation of second time earthing;
4th step: so far, whole earthing operation completes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510201897.9A CN104813777A (en) | 2015-04-24 | 2015-04-24 | Two-layer disc type covering device and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510201897.9A CN104813777A (en) | 2015-04-24 | 2015-04-24 | Two-layer disc type covering device and method |
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| CN104813777A true CN104813777A (en) | 2015-08-05 |
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| CN201510201897.9A Pending CN104813777A (en) | 2015-04-24 | 2015-04-24 | Two-layer disc type covering device and method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201119286Y (en) * | 2007-11-13 | 2008-09-24 | 开原市勃农机械有限公司 | Combined disc covering apparatus of planter |
| CN202153838U (en) * | 2011-07-29 | 2012-03-07 | 东北农业大学 | Three-direction adjustable soil covering compactor |
| EP2430895A1 (en) * | 2010-09-21 | 2012-03-21 | Deere & Company | Trench opener/closer, agricultural seeding machine with such and method for planting |
| CN203387878U (en) * | 2013-07-27 | 2014-01-15 | 辽宁益诚现代机械工程科技有限公司 | Seeding machine provided with soil covering wheels at front and back parts |
| CN104285546A (en) * | 2014-09-30 | 2015-01-21 | 张家港市沙洲绿农业科技发展有限公司 | Pressing and earth covering device |
| CN204810898U (en) * | 2015-04-24 | 2015-12-02 | 吉林农业大学 | Double -deck disc type covering device |
-
2015
- 2015-04-24 CN CN201510201897.9A patent/CN104813777A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201119286Y (en) * | 2007-11-13 | 2008-09-24 | 开原市勃农机械有限公司 | Combined disc covering apparatus of planter |
| EP2430895A1 (en) * | 2010-09-21 | 2012-03-21 | Deere & Company | Trench opener/closer, agricultural seeding machine with such and method for planting |
| CN202153838U (en) * | 2011-07-29 | 2012-03-07 | 东北农业大学 | Three-direction adjustable soil covering compactor |
| CN203387878U (en) * | 2013-07-27 | 2014-01-15 | 辽宁益诚现代机械工程科技有限公司 | Seeding machine provided with soil covering wheels at front and back parts |
| CN104285546A (en) * | 2014-09-30 | 2015-01-21 | 张家港市沙洲绿农业科技发展有限公司 | Pressing and earth covering device |
| CN204810898U (en) * | 2015-04-24 | 2015-12-02 | 吉林农业大学 | Double -deck disc type covering device |
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Application publication date: 20150805 |
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