吉林大学学报(工学版) ›› 2019, Vol. 49 ›› Issue (4): 1228-1235.doi: 10.13229/j.cnki.jdxbgxb20181110

• • 上一篇    

振动形式对水稻脱出物界面粘附规律的影响

程超1,2(),付君1,2(),唐心龙3,陈志2,4,任露泉1,2   

  1. 1. 吉林大学 工程仿生教育部重点实验室,长春 130022
    2. 吉林大学 生物与农业工程学院,长春 130022
    3. 吉林大学 农业实验基地,长春 130062
    4. 中国机械工业集团有限公司,北京 100080
  • 收稿日期:2018-11-09 出版日期:2019-07-01 发布日期:2019-07-16
  • 通讯作者: 付君 E-mail:chengchao17@mails.jlu.edu.cn;fu_jun@jlu.edu.cn
  • 作者简介:程超(1990-),男,博士研究生. 研究方向:仿生收获技术与装备. E-mail:chengchao17@mails.jlu.edu.cn
  • 基金资助:
    国家重点研发计划项目(2017YFD0700302);吉林省省校共建计划专项项目(SXGJXX2017-6)

Effects of vibration mode on interface adhesion law of rice threshed mixtures

Chao CHENG1,2(),Jun FU1,2(),Xin⁃long TANG3,Zhi CHEN2,4,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. Agriculture Test Station, Jilin University, Changchun 130062, China
    4. National Machinery Industry Co. , Ltd. , Beijing 100080, China
  • Received:2018-11-09 Online:2019-07-01 Published:2019-07-16
  • Contact: Jun FU E-mail:chengchao17@mails.jlu.edu.cn;fu_jun@jlu.edu.cn

摘要:

针对水稻联合收割机清选作业过程中筛面粘附、堵塞的问题,搭建了直线振动、圆弧振动和往复抖动3种振动原理试验台,开展了不同振动形式下水稻脱出物中易粘成分的界面粘附规律对比研究。研究发现,振动时间超过15 s时,3种振动形式工作面上粘附物质量基本保持稳定;在10~30 mm振幅区间内,3种振动形式工作面通过增大振幅可以有效减少粘附物质量;在2~3.5 Hz振频区间内,3种振动形式工作面通过增大振频可以快速减少粘附物质量;直线振动工作面中心加速度峰值要明显高于圆弧振动和往复抖动,直线振动工作面脱附效果最好;试验因素对直线振动工作面脱附性能的影响由主到次依次为振幅、振频、振动时间,试验因素对圆弧振动工作面和往复抖动工作面脱附性能的影响由主到次依次为振频、振幅、振动时间。

关键词: 农业机械化工程, 水稻脱出物, 清选筛, 振动形式, 界面粘附

Abstract:

During cleaning process of rice combine, the rice threshed mixtures could adhere to or block the sieve surface. In order to study the interface adhesion law of rice threshed mixtures under different vibration modes, three modes of vibration test bench were designed, including linear vibration, circular arc vibration and jitter. The adhesive mass on working face under three vibration modes kept stable when the vibration time exceeded 15 s. When the vibration amplitude was increased from 10 mm to 30 mm, the adhesive mass on the working face under three vibration modes was effectively reduced. As the vibration frequency was increased from 2 Hz to 3.5 Hz, the adhesive mass on the working face under three vibration modes was quickly reduced. The acceleration peak value of linear vibration working face was obviously higher than that of circular arc vibration and jitter. The linear vibration working face has the best anti-adhesion effect. The influences of test factors on the anti-adhesion capabilities of linear vibration working face in descending order are amplitude, frequency and vibration time. The influence of test factors on the anti-adhesion capabilities of circular arc vibration and jitter working face in descending order are frequency, amplitude and vibration time.

Key words: agricultural mechanization engineering, rice threshed mixtures, cleaning sieve, vibration mode, interface adhesion

中图分类号: 

  • S225.4

图1

直线振动试验台"

图2

直线振动试验台原理图"

图3

圆弧振动试验台"

图4

圆弧振动试验台原理图"

图5

往复抖动试验台"

图6

抖动试验台原理图"

图7

水稻脱出物中易粘成分"

图8

振动工作面上粘附物质量随振动时间的变化规律"

图9

MDR振动加速度测试装置"

图10

振动工作面中心加速度时域曲线"

图11

振动工作面上粘附物质量随振幅变化规律"

图12

振动工作面加速度峰值随振幅的变化曲线"

图13

振动工作面上粘附物质量随振频的变化规律"

图14

振动工作面加速度峰值随振频的变化曲线"

表1

正交试验方案及结果"

试验序号

振动

时间/s

振幅/mm 振频/Hz y 1/g y 2/g y 3/g
1 10 25 3 1.535 1.552 1.573
2 10 30 3.5 1.342 1.424 1.455
3 10 35 4 1.006 1.051 1.062
4 15 25 3.5 1.341 1.526 1.507
5 15 30 4 1.128 1.339 1.324
6 15 35 3 1.214 1.304 1.325
7 20 25 4 1.206 1.256 1.287
8 20 30 3 1.228 1.441 1.462
9 20 35 3.5 1.121 1.362 1.393

表2

直线振动工作面上粘附物质量极差分析结果"

指标 振动时间/s 振幅/mm 振频/Hz
最优组合 20 35 4
y 11 1.294 1.361 1.326
y 12 1.228 1.233 1.268
y 13 1.185 1.114 1.113
R 1 0.109 0.247 0.212
主次因素 振幅>振频>振动时间

表3

圆弧振动工作面上粘附物质量极差分析结果"

指标 振动时间/s 振幅/mm 振频/Hz
最优组合 10 35 4
y 21 1.342 1.445 1.432
y 22 1.390 1.401 1.437
y 23 1.353 1.239 1.215
R 2 0.047 0.206 0.217
主次因素 振频>振幅>振动时间

表4

前后抖动工作面上粘附物质量极差分析结果"

指标 振动时间/s 振幅/mm 振频/Hz
最优组合 10 35 4
y 31 1.363 1.456 1.453
y 32 1.385 1.414 1.452
y 33 1.381 1.260 1.224
R 3 0.022 0.196 0.229
主次因素 振频>振幅>振动时间
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