Journal of Agricultural Science and Technology ›› 2022, Vol. 24 ›› Issue (4): 107-115.DOI: 10.13304/j.nykjdb.2020.0975
• INTELLIGENT AGRICULTURE & AGRICULTURAL MACHINERY • Previous Articles Next Articles
Nanrui TANG(), Yong ZHOU(
), Guozhong ZHANG, Fang LIANG, Huibin KE
Received:
2020-11-18
Accepted:
2021-03-04
Online:
2022-04-15
Published:
2022-04-19
Contact:
Yong ZHOU
通讯作者:
周勇
作者简介:
唐楠锐 E-mail:tnr@webmail.hzau.edu.cn;
基金资助:
CLC Number:
Nanrui TANG, Yong ZHOU, Guozhong ZHANG, Fang LIANG, Huibin KE. Performance Simulation and Experiment of Stirred and Bunch Rice Seeding Device[J]. Journal of Agricultural Science and Technology, 2022, 24(4): 107-115.
唐楠锐, 周勇, 张国忠, 梁方, 柯烩彬. 搅种型孔式水稻穴播排种器的性能模拟与试验[J]. 中国农业科技导报, 2022, 24(4): 107-115.
Fig. 1 Structure of seed metering deviceNote:1—Unload block; 2—Left and right shell; 3—Seeding tube; 4—Positioning bracket; 5—Seed box; 6—Seed protection area; 7—Seeding shaft; 8—Seeding plate; 9—Seeding mouth; 10—Barrier brush; 11—Flange plate; 12—Cleaning brush; 13—Axle sleeve.
项目Items | 泊松比Poisson’s ratio | 剪切模量Shear modulus/Pa | 密度Density/(kg·m-3) |
---|---|---|---|
水稻种子Rice seed | 0.3 | 1.82×108 | 1 125 |
外壳shell | 0.5 | 1.77×108 | 1 180 |
种刷Brush | 0.4 | 1.00×108 | 1 150 |
Table 1 Material parameters
项目Items | 泊松比Poisson’s ratio | 剪切模量Shear modulus/Pa | 密度Density/(kg·m-3) |
---|---|---|---|
水稻种子Rice seed | 0.3 | 1.82×108 | 1 125 |
外壳shell | 0.5 | 1.77×108 | 1 180 |
种刷Brush | 0.4 | 1.00×108 | 1 150 |
项目Item | 弹性恢复系数 Coefficient of restitution | 滑动摩擦系数 Coefficient of sliding friction | 滚动摩擦系数 Coefficient of rolling friction |
---|---|---|---|
水稻种子Rice seed | 0.30 | 0.56 | 0.01 |
水稻-外壳Rice-shell | 0.50 | 0.50 | 0.01 |
种刷-水稻Brush-rice | 0.45 | 0.50 | 0.01 |
Table 2 Contact parameter between materials[14]
项目Item | 弹性恢复系数 Coefficient of restitution | 滑动摩擦系数 Coefficient of sliding friction | 滚动摩擦系数 Coefficient of rolling friction |
---|---|---|---|
水稻种子Rice seed | 0.30 | 0.56 | 0.01 |
水稻-外壳Rice-shell | 0.50 | 0.50 | 0.01 |
种刷-水稻Brush-rice | 0.45 | 0.50 | 0.01 |
水平 Level | A:型孔深度 Hole depth/mm | B:排种盘转速 Rotation speed of seeding disc/(r·min-1) | C:种层高度 Seed layer height /mm |
---|---|---|---|
1 | 7.0 | 30 | 50 |
2 | 6.8 | 25 | 45 |
3 | 6.6 | 20 | 40 |
Table 3 Test factor and level
水平 Level | A:型孔深度 Hole depth/mm | B:排种盘转速 Rotation speed of seeding disc/(r·min-1) | C:种层高度 Seed layer height /mm |
---|---|---|---|
1 | 7.0 | 30 | 50 |
2 | 6.8 | 25 | 45 |
3 | 6.6 | 20 | 40 |
转速 Rotating speed /(r·min-1) | 漏播率 Leak seeding rate/% | 合格率 Pass rate/% | 重播率 Repeat seeding rate/% |
---|---|---|---|
25 | 1.22 | 89.22 | 9.55 |
29 | 2.22 | 86.66 | 11.12 |
33 | 3.33 | 85.34 | 11.67 |
37 | 3.33 | 80.00 | 16.67 |
Table 4 Influence of rotational speed on the metering performance
转速 Rotating speed /(r·min-1) | 漏播率 Leak seeding rate/% | 合格率 Pass rate/% | 重播率 Repeat seeding rate/% |
---|---|---|---|
25 | 1.22 | 89.22 | 9.55 |
29 | 2.22 | 86.66 | 11.12 |
33 | 3.33 | 85.34 | 11.67 |
37 | 3.33 | 80.00 | 16.67 |
试验号 Test number | A | B | C | 穴粒合格指数 Qualified rate of the hole number/% | 漏播指数 Seeding omission index/% | 穴距合格指数 Qualified rate of hole spacing/% |
---|---|---|---|---|---|---|
1 | 1 | 1 | 1 | 80.0 | 13.3 | 74.3 |
2 | 1 | 2 | 3 | 75.8 | 13.6 | 73.8 |
3 | 1 | 3 | 2 | 83.0 | 11.0 | 77.8 |
4 | 2 | 1 | 3 | 80.6 | 14.9 | 71.2 |
5 | 2 | 2 | 2 | 74.6 | 17.5 | 66.1 |
6 | 2 | 3 | 1 | 84.9 | 6.8 | 86.1 |
7 | 3 | 1 | 2 | 81.5 | 9.2 | 81.3 |
8 | 3 | 2 | 1 | 83.9 | 6.5 | 86.9 |
9 | 3 | 3 | 3 | 85.7 | 1.8 | 96.4 |
Table 5 Test scheme and results
试验号 Test number | A | B | C | 穴粒合格指数 Qualified rate of the hole number/% | 漏播指数 Seeding omission index/% | 穴距合格指数 Qualified rate of hole spacing/% |
---|---|---|---|---|---|---|
1 | 1 | 1 | 1 | 80.0 | 13.3 | 74.3 |
2 | 1 | 2 | 3 | 75.8 | 13.6 | 73.8 |
3 | 1 | 3 | 2 | 83.0 | 11.0 | 77.8 |
4 | 2 | 1 | 3 | 80.6 | 14.9 | 71.2 |
5 | 2 | 2 | 2 | 74.6 | 17.5 | 66.1 |
6 | 2 | 3 | 1 | 84.9 | 6.8 | 86.1 |
7 | 3 | 1 | 2 | 81.5 | 9.2 | 81.3 |
8 | 3 | 2 | 1 | 83.9 | 6.5 | 86.9 |
9 | 3 | 3 | 3 | 85.7 | 1.8 | 96.4 |
试验指标 Test index | 方差来源 Source of Variance | 离差平方和 Sum of squared deviations | 自由度 Degree of freedom | F | P |
---|---|---|---|---|---|
穴粒合格指数 Qualified rate of the hole number | A | 30.442 | 2 | 3.28 | 0.234 |
B | 62.842 | 2 | 6.77 | 0.129 | |
C | 16.442 | 2 | 1.77 | 0.361 | |
误差Error | 9.282 | 2 | — | — | |
漏播指数 Seeding omission index | A | 98.749 | 2 | 52.65 | 0.019* |
B | 74.209 | 2 | 37.97 | 0.026* | |
C | 21.296 | 2 | 11.35 | 0.081 | |
误差Error | 1.876 | 2 | — | — | |
穴距合格指数 Qualified rate of hole spacing | A | 355.709 | 2 | 66.34 | 0.015* |
B | 249.389 | 2 | 46.51 | 0.021* | |
C | 87.296 | 2 | 16.28 | 0.058 | |
误差Error | 5.362 | 2 | — | — |
Table 6 Variance analysis result
试验指标 Test index | 方差来源 Source of Variance | 离差平方和 Sum of squared deviations | 自由度 Degree of freedom | F | P |
---|---|---|---|---|---|
穴粒合格指数 Qualified rate of the hole number | A | 30.442 | 2 | 3.28 | 0.234 |
B | 62.842 | 2 | 6.77 | 0.129 | |
C | 16.442 | 2 | 1.77 | 0.361 | |
误差Error | 9.282 | 2 | — | — | |
漏播指数 Seeding omission index | A | 98.749 | 2 | 52.65 | 0.019* |
B | 74.209 | 2 | 37.97 | 0.026* | |
C | 21.296 | 2 | 11.35 | 0.081 | |
误差Error | 1.876 | 2 | — | — | |
穴距合格指数 Qualified rate of hole spacing | A | 355.709 | 2 | 66.34 | 0.015* |
B | 249.389 | 2 | 46.51 | 0.021* | |
C | 87.296 | 2 | 16.28 | 0.058 | |
误差Error | 5.362 | 2 | — | — |
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