Journal of Jilin University(Engineering and Technology Edition) ›› 2020, Vol. 50 ›› Issue (1): 351-360.doi: 10.13229/j.cnki.jdxbgxb20190826

Previous Articles    

Effect of motion parameters of cleaning screen on corn cob blocking law

Chao CHENG1,2(),Jun FU1,2(),Fu-ping HAO3,Zhi CHEN2,3,De-yi ZHOU2,Lu-quan REN1,2   

  1. 1. Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130022, China
    2. College of Biological and Agricultural Engineering, Jilin University, Changchun 130022, China
    3. Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, China
  • Received:2019-08-20 Online:2020-01-01 Published:2020-02-06
  • Contact: Jun FU E-mail:chengchao17@mails.jlu.edu.cn;fu_jun@jlu.edu.cn

RICH HTML

 3   

PDF (PC)

181

Abstract:

Screen blocking during cleaning operation of combine by corn cob seriously affects the yield of corn grain. Amplitude, vibration frequency and vibration angle of the screen are three key motion parameters. In order to explore the influence of three key motion parameters on screen blocking, single-factor test, orthogonal test and verification test were carried out by self-made vibration test bench and modified combine prototype respectively. The change rules of acceleration and mass of blocked corn cob with the increase of motion parameters were revealed through single factor test. The regression model of the influence of three motion parameters on screen blocking was established through orthogonal test. Then the optimal combination of three motion parameters was amplitude of 50 mm, vibration frequency of 7 Hz, direction angle of 55°. The validation test showed that the average mass of blocked corn cob was 10.39 g, the grain impurity rate was 0.9%, and the cleaning loss rate was 1.09%. The optimal combination of motion parameters has good screening performance and meets the production requirements of grain cleaning in combine.

Key words: agricultural mechanization engineering, corn combine, screen motion parameters, corn cob, screen blocking law

CLC Number: 

  • S225.5

Fig.1

Schematic diagram of collision motion between cleaning screen and corn cob"

Fig.2

"

Fig.3

"

Fig.4

Structural characteristics of corn cob"

Fig.5

"

Fig.6

Collect blocking corn cobs"

Fig.7

Effect of amplitude on cleaning screen blocking law caused by corn cob"

Fig.8

"

Fig.9

Effect of vibration frequency on cleaning screen blocking law caused by corn cob"

Fig.10

"

Fig.11

Effect of direction angle on cleaning screen blocking law caused by corn cob"

Fig.12

"

Table 1

Coding of test factors"

编码 因素
振幅x 1/mm 振频x 2/Hz 方向角x 3/（°）
r 50.0 8.0 60.0
1 48.5 7.7 57.1
0 45.0 7.0 50.0
-1 41.5 6.3 42.9
-r 40.0 6.0 40.0

Table 2

Orthogonal test scheme and results"

试验编号 试验因素 堵塞玉米芯轴质量y/g
x 1 x 2 x 3
1 1 1 1 9.40
2 1 1 -1 11.60
3 1 -1 1 6.68
4 1 -1 -1 11.48
5 -1 1 1 8.91
6 -1 1 -1 11.84
7 -1 -1 1 13.19
8 -1 -1 -1 14.29
9 r 0 0 6.31
10 -r 0 0 11.23
11 0 r 0 7.94
12 0 -r 0 13.31
13 0 0 r 8.67
14 0 0 -r 13.19
15 0 0 0 6.97
16 0 0 0 8.79
17 0 0 0 7.45
18 0 0 0 7.57

Fig.13

"

Fig.14

Verification test prototype"

Table 3

Verification test results"

序号 堵塞玉米芯轴质量/g 籽粒含杂率/% 清选损失率%
1 10.36 0.89 1.09
2 10.25 0.88 1.11
3 10.41 0.91 1.08
4 10.51 0.93 1.06
5 10.43 0.90 1.10
平均值 10.39 0.90 1.09

Fig.15

Changing curve of mass of blocked corn cob with time"

1 张丽娜，陈志，杨敏丽，等 . 我国玉米生产效率时空特征分析[J]. 农业机械学报，2018，49（1）：183-193.
Zhang Li-na ， Chen Zhi ， Yang Min-li ，et al . Spatio-temporal feature of maize production efficiency in main producing provinces of China[J]. Transactions of the Chinese Society for Agricultural Machinery，2018，49（1）：183-193.
2 陈印军，王琦琪，向雁 . 我国玉米生产地位、优势与自给率分析[J]. 中国农业资源与区划，2019，40（1）：7-16.
Chen Yin-jun , Wang Qi-qi , Xiang Yan . Analysis on the status, superiority and self-sufficiency ratio of maize in China[J]. Chinese Journal of Agricultural Resources and Regional Planning, 2019, 40(1): 7-16.
3 耿爱军，杨建宁，张兆磊，等 ． 国内外玉米收获机械发展现状及展望[J]． 农机化研究，2016，38（4）：251-257．
Geng Ai-jun ， Yang Jian-ning ， Zhang Zhao-lei ，et al ．Discuss about the current situation and future of corn harvest machinery about domestic and abroad[J]． Journal of Agricultural Mechanization Research，2016，38（4）：251-257．
4 陈志，郝付平，王锋德，等 . 中国玉米收获技术与装备发展研究[J]. 农业机械学报，2012，43（12）：44-50.
Chen Zhi ， Hao Fu-ping ， Wang Feng-de ，et al . Development of technology and equipment of corn harvester in China[J]. Transactions of the Chinese Society for Agricultural Machinery，2012，43（12）：44-50.
5 陈志 . 玉米全价值收获关键技术与装备[M]. 北京：科学出版社，2014.
6 程超，付君，陈志，等 . 玉米籽粒收获机清选装置参数优化试验[J]. 农业机械学报，2019，50（7）：151-158.
Cheng Chao , Fu Jun , Chen Zhi , et al . Optimization experiment on cleaning device parameters of corn kernel harvester[J]. Transactions of the Chinese Society for Agricultural Machinery，2019，50（7）：151-158.
7 王立军，李洋，梁昌，等 . 贯流风筛清选装置内玉米脱出物运动规律研究[J]. 农业机械学报，2015，46（9）：122-127.
Wang Li-ju ， Li Yang ， Liang Chang ，et al . Motion law of maize mixture in cross air-and-screen cleaning device[J]. Transactions of the Chinese Society for Agricultural Machinery，2015，46（9）：122-127.
8 李杰，闫楚良，杨方飞 ．联合收割机振动筛的动态仿真与参数优化[J]． 吉林大学学报:工学版，2006，36(5)：701-704．
Li Jie ， Yan Chu-liang ， Yang Fang-fei ． Dynamic simulation and parameter optimization of the combine harvester vibration sieve[J]. Journal of Jilin University (Engineering and Technology Edition)，2006，36(5)：701-704．
9 杜小强，肖梦华，胡小钦，等 . 贯流式谷物清选装置气固两相流数值模拟与试验[J]. 农业工程学报，2014，30（3）：27-34.
Du Xiao-qiang ， Xiao Meng-hua ， Hu Xiao-qin ，et al . Numerical simulation and experiment of gas-solid two-phase flow in cross-flow grain cleaning device[J]. Transactions of the Chinese Society of Agricultural Engineering，2014，30（3）：27-34.
10 Fu Jun , Chen Zhi , Han Lu-jia , et al . Review of grain threshing theory and technology[J]. International Journal of Agricultural and Biological Engineering, 2018, 11(3): 12-20.
11 樊晨龙，崔涛，张东兴，等 . 纵轴流联合收获机双层异向清选装置设计与试验[J]. 农业机械学报，2018，49（增刊）：239-248.
Fan Chen-long ， Cui Tao ， Zhang Dong-xing ，et al . Design and experiment of double-layered reverse cleaning device for axial flow combine Harvester[J]. Transactions of the Chinese Society for Agricultural Machinery，2018，49（Sup.）：239-248.
12 王立军，张传根，丁振军 . 玉米收获机清选筛体结构优化[J]. 农业机械学报，2016，47（9）：108-114.
Wang Li-jun ， Zhang Chuan-gen ， Ding Zhen-jun . Structure optimization of cleaning screen for maize harvester[J]. Transactions of the Chinese Society for Agricultural Machinery，2016，47（9）：108-114.
13 王立军，冯鑫，武振超，等 . 玉米联合收获机贯流风阶梯式振动筛设计与试验[J]. 农业机械学报，2018，49（10）：115-123.
Wang Li-jun ， Feng Xin ， Wu Zhen-chao ，et al . Design and test of stepped vibrating screen with cross air for maize harvester[J]. Transactions of the Chinese Society for Agricultural Machinery，2018，49（10）：115-123.
14 王立军，段良坤，郑招辉，等 . 三移动两转动振动筛驱动机构优化与试验[J]. 农业机械学报，2018，49（6）：138-145.
Wang Li-jun ， Duan Liang-kun ， Zheng Zhao-hui ，et al . Optimization and experiment on driving mechanism of vibrating screen with three translations and two rotations[J]. Transactions of the Chinese Society for Agricultural Machinery，2018，49（6）：138-145.
15 Wang L J ， Ding Z J ， Meng S ，et al ． Kinematics and dynamics of a particle on a non-simple harmonic vibrating screen[J]. Particuology，2017，32：167-177．
16 王立军，彭博，宋慧强 . 玉米收获机聚氨酯橡胶筛筛分性能仿真与试验[J]. 农业机械学报，2018，49（7）：138-145.
Wang Li-jun ， Peng Bo ， Song Hui-qiang ，et al . Cleaning of maize mixture based on polyurethane rubber sieve[J]. Transactions of the Chinese Society for Agricultural Machinery，2018，49（7）：138-145.
17 王卓，车东，白晓平，等 . 玉米联合收获机清选损失监测装置设计与试验[J]. 农业机械学报，2018，49（12）：100-108.
Wang Zhuo ， Che Dong ， Bai Xiao-ping ，et al . Improvement and experiment of cleaning loss rate monitoring device for corn combine harvester[J]. Transactions of the Chinese Society for Agricultural Machinery，2018，49（12）：100-108.
18 张真，迟瑞娟，杜岳峰，等 . 基于CAN总线的玉米收获智能控制系统研究[J]. 农业机械学报，2018，49（增刊）：275-281.
Zhang Zhen ， Chi Rui-juan ， Du Yue-feng ，et al . Investigation on CAN-bus-based corn harvester intelligent control system[J]. Transactions of the Chinese Society for Agricultural Machinery，2018，49（Supp.）：275-281.
19 李耀明，马征，徐立章 . 油菜联合收获机筛面粘附物摩擦特性[J]. 农业机械学报，2010，41(12)：54－57.
Li Yao-ming , Ma Zheng , Xu Li-zhang . Tribological characteristics of adhesive materials on cleaning sieve of rape combine harvester[J]. Transactions of the Chinese Society for Agricultural Machinery, 2010, 41(12): 54-57.
20 李耀明，马征，徐立章 . 油菜混合物与仿生筛面基体间的粘附特性[J]. 农业机械学报，2012，43(2)：75-78.
Li Yao-ming , Ma Zheng , Xu Li-zhang . Adhesion property between rape mixture and bionic screen matrix[J]. Transactions of the Chinese Society for Agricultural Machinery, 2012, 43(2): 75-78.
21 李耀明 . 谷物联合收割机的设计与分析[M]. 北京：机械工业出版社，2014.
22 李宝筏 . 农业机械学[M]. 北京：中国农业出版社，2003.
23 任露泉 . 试验设计及其优化[M]. 北京：科学出版社，2009.
[1] Chao CHENG,Jun FU,Xin⁃long TANG,Zhi CHEN,Lu⁃quan REN. Effects of vibration mode on interface adhesion law of rice threshed mixtures [J]. Journal of Jilin University(Engineering and Technology Edition), 2019, 49(4): 1228-1235.
[2] FU Jun,QIAN Zhi-hui,YIN Wei,WANG Jia-jia,REN Lu-quan. Experimental study of friction and tensile properties of wheat [J]. 吉林大学学报(工学版), 2015, 45(2): 501-507.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
No Suggested Reading articles found!
Copyright © Journal of Jilin University(Engineering and Technology Edition), All Rights Reserved.
Tel: +86-431-85095297　Fax: +86-431-85094074　E-mail: xbgxb@jlu.edu.cn
Powered by Beijing Magtech Co. Ltd