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      2. 水田土壤黏附力測量儀設計與試驗
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        國家自然科學基金面上項目(51775220);中央高?;究蒲袠I務費專項(2662018PY038); 湖北省高等學校優秀中青年科技創新團隊計劃(T201934)


        Design and testing of soil adhesion measuring instrument for paddy fields
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          摘要:

          為快速準確原位獲取水田土壤黏附特性,結合水田土壤環境特征與黏附力測量原理,設計了一種便攜式水田土壤黏附力測量儀,其由黏附力測盤、水平驅動裝置、拉拔裝置、PLC控制部分、機架及相關連接件構成,其控制系統采用GX Works2編程軟件進行指令編輯。以法向拉拔速度vn、切向速度vτ、水田土壤空間深度為影響因素,利用該測量儀開展水田土壤黏附力單因素試驗,初步獲取了上述因素對水田土壤接觸界面黏附力的影響機制。結果表明,在試驗條件下,隨法向拉拔速度vn、切向速度vτ增加,土壤黏附力呈增大趨勢;隨水田土壤空間深度的增加,土壤黏附力呈先增后減小趨勢。

          Abstract:

          Because of the existence of soil adhesion characteristics,it often causes soil to adhere to the surface of working parts,which increases the energy consumption of equipment and even prevents normal operation. With the improvement of modern agricultural mechanization and the increasing variety of soil-engaging components,researchers put forward higher requirements for designing and optimizing soil-engaging components. In this study,a paddy field soil adhesion measuring instrument was designed. The single factor experiment was carried out with normal pull-out velocity vn,tangential velocity vτ and paddy field soil spatial depth as influencing factors. The factors affecting the contact interface adhesion were preliminarily obtained. The results showed that the soil adhesion increased with the increase of normal drawing speed vn and tangential velocity vτ,and first increased and then decreased with the increase of spatial depth of paddy field soil.

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        張國忠,左志,王洪昌,高原,韓宇航.水田土壤黏附力測量儀設計與試驗[J].華中農業大學學報,2020,39(4):169-174

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        • 收稿日期:2019-12-21
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        • 在線發布日期: 2020-07-30
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