亚洲一区欧美在线,日韩欧美视频免费观看,色戒的三场床戏分别是在几段,欧美日韩国产在线人成

油菜聯(lián)合收獲機滾筒篩式復清裝置設計與試驗
作者:
作者單位:

作者簡介:

通訊作者:

中圖分類號:

基金項目:

國家自然科學基金項目(52075210)、中國博士后科學基金項目(2020M682438)和財政部和農業(yè)農村部:國家現代油菜產業(yè)技術體系專項(CARS-12)


Design and Experiment of Cylinder Sieve Type Re-cleaning Device for Rape Combine Harvester
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 圖/表
  • |
  • 訪問統(tǒng)計
  • |
  • 參考文獻
  • |
  • 相似文獻
  • |
  • 引證文獻
  • |
  • 資源附件
  • |
  • 文章評論
    摘要:

    針對油菜聯(lián)合收獲機脫粒分離作業(yè)后脫出物組分雜,籽粒細小不易分離,導致清選作業(yè)清潔率低、人工復清勞動強度大等問題,設計了一種掛接在糧箱上的模塊化滾筒篩式復清裝置。基于運動學與動力學分析了物料提升螺旋輸送器和篩分裝置的結構參數與運行參數范圍;以滾筒篩式復清裝置的損失率、清潔率及篩分效率為評價指標,以滾筒篩轉速、篩網內助流螺旋葉片螺距和篩孔直徑為影響因素,基于EDEM開展了三因素三水平正交試驗,確定了最佳參數組合,并利用收獲關鍵部件試驗臺開展了驗證試驗。仿真結果表明:當喂入量為0.6kg/s時,滾筒篩式復清裝置的較優(yōu)參數組合為篩孔直徑5mm、滾筒篩轉速105r/min、篩網內助流螺旋葉片螺距250mm,此時滾筒篩式復清裝置損失率為0.92%、清潔率為98.96%、篩分效率為95.12%。臺架驗證試驗表明,帶有滾筒篩式復清裝置的清選系統(tǒng)工作順暢,在最佳參數組合條件下,滾筒篩式復清裝置的損失率為0.96%、清潔率為98.67%、篩分效率為95.36%,對比未增加滾筒篩式復清裝置前清潔率提升了4.38個百分點。研究可為油菜聯(lián)合收獲機清選裝置結構改進和優(yōu)化提供參考。

    Abstract:

    Existing rape combine harvester has the challenges to separate the small rapeseed from the threshing outputs whose components are mixed, highlighting the need to improve the cleaning rate to reduce the labor consumption in manual re-cleaning process. Therefore, a modularized re-cleaning cylinder sieve, which could hung on the grain tank, was designed. Based on the kinematics and dynamic analysis, the range of structure and operation parameters of the material lifting screw conveyor and screening device were analyzed. A three-factor and three-level orthogonal experiment was carried out by using EDEM. The loss rate, cleaning rate and screening efficiency were taken as the indexes. The rotating speed of cylinder sieve, the screw pitch of the spiral blade, and the diameter of the sieve hole were taken as the factors. The optimal parameter combination was determined by the orthogonal experiment, and verified by the bench verification experiment. The simulation results indicated that the optimal parameter combination of the diameter of sieve hole, the rotating speed of cylinder sieve, and the screw pitch of the spiral blade were 5mm, 105r/min and 250mm, respectively. When the feeding rate was 0.6kg/s, under this condition, the loss rate, cleaning rate, and screening efficiency of re-cleaning cylinder sieve were 0.92%, 98.96% and 95.12%, respectively. The results of bench experiment showed that the cleaning system with re-cleaning cylinder sieve could work smoothly. Under the optimal parameter combination, the loss rate, cleaning rate, and screening efficiency were 0.96%, 98.67% and 95.36%, respectively. Compared with the performance of the cyclone separation cleaning device without re-cleaning cylinder sieve, the cleaning rate was improved by 4.38 percentage points. The research could provide a reference for the structural improvement and optimization of cleaning device of rape combine harvester.

    參考文獻
    相似文獻
    引證文獻
引用本文

袁佳誠,楊佳,萬星宇,廖宜濤,廖慶喜.油菜聯(lián)合收獲機滾筒篩式復清裝置設計與試驗[J].農業(yè)機械學報,2022,53(9):99-108. YUAN Jiacheng, YANG Jia, WAN Xingyu, LIAO Yitao, LIAO Qingxi. Design and Experiment of Cylinder Sieve Type Re-cleaning Device for Rape Combine Harvester[J]. Transactions of the Chinese Society for Agricultural Machinery,2022,53(9):99-108.

復制
分享
文章指標
  • 點擊次數:
  • 下載次數:
  • HTML閱讀次數:
  • 引用次數:
歷史
  • 收稿日期:2021-10-28
  • 最后修改日期:
  • 錄用日期:
  • 在線發(fā)布日期: 2022-09-10
  • 出版日期:
文章二維碼