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主動潤滑減阻曲面深松鏟設計與試驗
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國家重點研發(fā)計劃項目(2017YFD0701103-3)


Design and Test of Active Lubrication and Drag Reduction Curved Subsoiler
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    摘要:

    針對深松作業(yè)阻力大、牽引能耗高、作業(yè)效率低等問題,提出了一種針對低含水率、高緊實度耕作土壤的曲面深松鏟主動潤滑減阻和土壤改良復合作業(yè)方案。首先,在三維掃描獲得曲面深松鏟三維模型的基礎上,通過離散元法分析了曲面深松鏟作業(yè)過程中深松鏟與土壤顆粒間的互作特性,確定了鏟體最大摩擦接觸面作為主動潤滑減阻面;其次,提出了主動液體潤滑減阻思路,并借鑒蚯蚓體液分布構形與體表織構,分別在鏟面和鏟尖的最大摩擦接觸面上,設計了溝槽形式的表面構型與節(jié)流孔等潤滑面結構以及潤滑介質泵送系統(tǒng),形成了主動潤滑減阻曲面深松鏟;最后,以作業(yè)速度、潤滑液流量為試驗因素,以水平方向作業(yè)阻力為主要指標,在兩種土壤條件下進行了大田試驗。試驗結果表明:在褐土地作業(yè)環(huán)境下,當作業(yè)速度為3km/h、潤滑液流量為12L/min時,減阻率可達13.48%;在鹽堿地作業(yè)環(huán)境下,當作業(yè)速度為1.87km/h、潤滑液流量為12L/min時,減阻率可達19.87%;初步證明主動潤滑減阻作業(yè)模式在低含水率、高緊實度土壤中具有較好減阻效果。

    Abstract:

    Aiming at the problems of high resistance, high energy consumption of traction in subsoiling, low operation efficiency, cultivated layer restoration and soil remediation, an active lubricating drag reduction scheme for curved subsoiler for low water content and high compactness farming soil was proposed. Firstly, on the basis of the three-dimensional model of the curved subsoiler obtained by three-dimensional scanning, the interaction between the subsoiler and the soil particles during the operation of the curved subsoiler was analyzed by the discrete element method, and the maximum friction contact surface of the subsoiler body was determined as the active lubrication drag reducing surface. Secondly, the idea of active lubricating drag reduction was proposed, and the body fluid distribution and body surface texture of earthworm were used for reference. To form the active lubrication and drag reducing curved subsoiler, the surface configuration in the form of groove, the structure of the lubricating surface such as throttle hole and the pumping system of the lubricating medium were designed on the maximum friction contact surface of the subsoiler surface and the subsoiler tip, respectively. Finally, the operation speed and lubricating fluid flow rate were used as the test factors, and the horizontal operation resistance was the main indicator. Field tests were carried out under two soil conditions. The test results showed that in the brown soil environment, when the operating speed was 3km/h and the lubricating fluid flow rate was 12L/min, the drag reduction rate could reach 13.48%. In the saline-alkali environment, when the operating speed was 1.87km/h and the lubricating fluid flow rate was 12L/min, the drag reduction rate could reach 19.87%. It was preliminarily proved that the active lubricating drag reduction operation mode had a good drag reduction effect in the soil with low moisture content and high compactness.

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鄒亮亮,劉功,苑進,辛振波,牛子孺.主動潤滑減阻曲面深松鏟設計與試驗[J].農業(yè)機械學報,2022,53(6):34-43. ZOU Liangliang, LIU Gong, YUAN Jin, XIN Zhenbo, NIU Ziru. Design and Test of Active Lubrication and Drag Reduction Curved Subsoiler[J]. Transactions of the Chinese Society for Agricultural Machinery,2022,53(6):34-43.

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  • 收稿日期:2021-06-06
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  • 在線發(fā)布日期: 2021-07-01
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