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仿形彈性鎮(zhèn)壓輥減粘防滑結(jié)構(gòu)設(shè)計(jì)與試驗(yàn)
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“十二五”國(guó)家科技支撐計(jì)劃資助項(xiàng)目(2014BAD06B03)和國(guó)家自然科學(xué)基金資助項(xiàng)目(51305158)


Design and Experiment on Reducing Soil Adhesion and Anti-slip Structure of Profiling Elastic Press Roller
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    摘要:

    針對(duì)仿形彈性鎮(zhèn)壓輥粘附土壤和滑移率較大的問題,基于典型土壤動(dòng)物蚯蚓的體表柔性幾何特征,設(shè)計(jì)了一種適用于仿形彈性鎮(zhèn)壓輥的減粘防滑結(jié)構(gòu),其主體是橡膠凸起,同時(shí)采用肋條結(jié)構(gòu)對(duì)其進(jìn)行固定。這種結(jié)構(gòu)具有粘附土壤少、滑移率低、鎮(zhèn)壓力分布均勻、碎土效果好等優(yōu)點(diǎn)。通過理論計(jì)算和運(yùn)動(dòng)學(xué)分析對(duì)減粘防滑結(jié)構(gòu)的運(yùn)動(dòng)過程進(jìn)行研究,得出橡膠凸起的特征方程,以及凸起高度和肋條高度的取值范圍。通過三因素三水平正交組合試驗(yàn)得出影響鎮(zhèn)壓輥粘附土壤量因素的顯著性順序依次為:凸起高度、肋條高度、載荷;影響鎮(zhèn)壓輥滑移率因素的顯著性順序依次為:肋條高度、凸起高度、載荷;得到減粘防滑結(jié)構(gòu)的最佳參數(shù)組合為:載荷450.0N、凸起高度13.9mm、肋條高度15.1mm,并找到各因素對(duì)粘附土壤質(zhì)量和滑移率的影響。田間驗(yàn)證試驗(yàn)和對(duì)比試驗(yàn)得到鎮(zhèn)壓輥的粘附土壤質(zhì)量為39.2g,滑移率為3.89%,分別比沒有減粘防滑結(jié)構(gòu)的鎮(zhèn)壓輥降低60.1%和54.3%。

    Abstract:

    During the working process of press roller, the deficiencies in the soil adhesion and the large slip rate on the profiling elastic press roller are existed. Based on the flexible geometry features of the typical soil animal body surface, the reducing soil adhesion and anti-slip structure were designed to solve the problem. The structure consists of rubber bulges, which are fixed by the existing bionic rib structure. This structure has the advantages of less soil adhesion, lower slip rate, more uniform pressure distribution and better soil crushing effect. The movement process of the reducing soil adhesion and anti-slip structure was researched by using theoretical calculation and kinematics analysis, the characteristic equation of rubber bulges and the value ranges of bulge height and rib height were obtained. The orthogonal combination experiments of three factors and three levels were designed and performed. The results showed that the primacy sequence of the experiment factors influencing soil adhesion was: rubber bulge height (H), rib height (L), total loads (F) and the primacy sequence of the experiment factors influencing slip rate was: rib height, rubber bulge height and total loads. Optimal levels of the experiment factors influencing soil adhesion and slip rate were F of 450.0N, H of 13.9mm, L of 15.1mm. At the same time, verification tests and comparison tests were conducted in the field. The results showed the soil adhesion quality was 39.2g, the slip rate was 3.89%, compared with the roller without the reducing soil adhesion and anti-slip structure, the soil adhesion quality was reduced by 60.1% and the slip rate was reduced by 54.3%.

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賈洪雷,王文君,莊健,羅曉峰,姚鵬飛,李楊.仿形彈性鎮(zhèn)壓輥減粘防滑結(jié)構(gòu)設(shè)計(jì)與試驗(yàn)[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2015,46(6):20-27. Jia Honglei, Wang Wenjun, Zhuang Jian, Luo Xiaofeng, Yao Pengfei, Li Yang. Design and Experiment on Reducing Soil Adhesion and Anti-slip Structure of Profiling Elastic Press Roller[J]. Transactions of the Chinese Society for Agricultural Machinery,2015,46(6):20-27.

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  • 收稿日期:2015-01-26
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  • 在線發(fā)布日期: 2015-06-10
  • 出版日期: 2015-06-10