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基于刮削與振動(dòng)原理的減粘降阻鎮(zhèn)壓裝置研究
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“十二五”國家科技支撐計(jì)劃項(xiàng)目(2014BAD11B01)和黑龍江省重大科技招標(biāo)項(xiàng)目(GA14B101-01)


Investigation on Press Device in Reducing Adhesion and Resistance Based on Scrape and Vibration Principle
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    摘要:

    針對鎮(zhèn)壓作業(yè)時(shí),土壤粘附嚴(yán)重、牽引阻力大等問題,借鑒地面機(jī)械觸土部件減粘降阻法,設(shè)計(jì)了一種機(jī)械式減粘降阻鎮(zhèn)壓裝置。進(jìn)行鎮(zhèn)壓裝置運(yùn)動(dòng)過程分析、鎮(zhèn)壓輪表面脫土機(jī)理分析和刮削板脫土機(jī)理分析,為確定鎮(zhèn)壓裝置減粘降阻的能力提供了理論依據(jù),并在此基礎(chǔ)上對鎮(zhèn)壓裝置的關(guān)鍵機(jī)構(gòu)進(jìn)行了設(shè)計(jì)。為研究機(jī)械式減粘降阻鎮(zhèn)壓裝置的工作性能,以彈簧剛度、前進(jìn)速度和刮削角為試驗(yàn)因素,以牽引阻力、土壤粘附量為試驗(yàn)指標(biāo),在室內(nèi)土槽中進(jìn)行L9(34)正交試驗(yàn)。試驗(yàn)結(jié)果表明:各因素對指標(biāo)影響的主次順序?yàn)閺椈蓜偠?、刮削角、前進(jìn)速度;最優(yōu)水平組合為彈簧剛度40N/mm、刮削角30°、前進(jìn)速度7km/h。以最優(yōu)水平組合進(jìn)行驗(yàn)證試驗(yàn),得到牽引阻力39.6N,土壤粘附量43.24g。與傳統(tǒng)鎮(zhèn)壓裝置的對比試驗(yàn)表明,機(jī)械式減粘降阻鎮(zhèn)壓裝置使?fàn)恳枇档?7.8%,土壤粘附量降低34.8%。

    Abstract:

    Aiming at the problems such as serious soil adhesion, large traction resistance, a press device in mechanical type reducing adhesion and resistance was designed according to the method of terrain machines reducing adhesion and resistance. The movement process of press device was analyzed. The suppression device, scraping angle to take off the soil, and soil compaction mechanism analysis were done. The mechanism analysis can provide theoretical basis for the design of the press device, and based on that the key components of press device was designed. For the study performance of press device in mechanical type reducing adhesion and resistance, the spring stiffness coefficient, speed and scraping angle were taken as experimental factors, traction resistance, soil adhesive quality were taken as test indexes. The orthogonal test L9(34) was conducted in the indoor soil bin for getting test factors affecting the performance of press device work. Test results showed that the order of the various factors affecting were as follows: the spring stiffness coefficient, scraping angle and speed;the best combination: the spring stiffness coefficient was 40N/mm, scraping angle was 30°, and speed was 7km/h. To the optimal level combination of verification experiment: traction resistance was 39.6N, and soil adhesive quality was 43.24g. Compared with the traditional repressive device, the results showed that the press device based on scrape and vibration principle can reduce the traction resistance by 17.8% and the soil adhesion can be reduced by 34.8%.

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劉宏俊,趙淑紅,譚賀文,楊悅乾,張先民.基于刮削與振動(dòng)原理的減粘降阻鎮(zhèn)壓裝置研究[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2018,49(1):86-92. LIU Hongjun, ZHAO Shuhong, TAN Hewen, YANG Yueqian, ZHANG Xianmin. Investigation on Press Device in Reducing Adhesion and Resistance Based on Scrape and Vibration Principle[J]. Transactions of the Chinese Society for Agricultural Machinery,2018,49(1):86-92.

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  • 收稿日期:2017-04-19
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  • 在線發(fā)布日期: 2018-01-10
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