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丘陵地區(qū)雙向仿形鎮(zhèn)壓裝置設(shè)計(jì)與試驗(yàn)
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“十二五”國(guó)家科技支撐計(jì)劃項(xiàng)目(2014BAD11B01)和黑龍江省重大科技招標(biāo)項(xiàng)目(GA14B101-01)


Design and Experiment of Bidirectional Profiling Press Device for Hilly Area
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    摘要:

    針對(duì)鎮(zhèn)壓裝置在丘陵地區(qū)作業(yè)時(shí)鎮(zhèn)壓不均勻,、鎮(zhèn)壓強(qiáng)度不足等問題,,借鑒丘陵山地農(nóng)業(yè)機(jī)械結(jié)構(gòu)特點(diǎn),,設(shè)計(jì)了一種能實(shí)現(xiàn)雙向仿形和鎮(zhèn)壓強(qiáng)度可調(diào)的鎮(zhèn)壓裝置,。該裝置主要由仿形調(diào)節(jié)機(jī)構(gòu),、鎮(zhèn)壓強(qiáng)度調(diào)節(jié)機(jī)構(gòu)和鎮(zhèn)壓輪組成,。建立了丘陵地形下鎮(zhèn)壓輪與土壤相互作用模型,,對(duì)鎮(zhèn)壓輪進(jìn)行受力分析,,確定鎮(zhèn)壓輪工作過程,,同時(shí)對(duì)鎮(zhèn)壓裝置進(jìn)行受力分析,,確定彈簧變形量(鎮(zhèn)壓強(qiáng)度)的合理范圍。進(jìn)行對(duì)比試驗(yàn)和田間性能試驗(yàn),,采用L9(34)正交試驗(yàn),,考察鎮(zhèn)壓輪類型、鎮(zhèn)壓強(qiáng)度,、作業(yè)速度對(duì)鎮(zhèn)壓裝置作業(yè)性能的影響,,得到了各因素的主次順序:鎮(zhèn)壓輪類型、彈簧變形量(鎮(zhèn)壓強(qiáng)度),、作業(yè)速度,,最優(yōu)組合:橡膠鎮(zhèn)壓輪、彈簧變形量20mm,、作業(yè)速度1m/s,,此時(shí)牽引阻力為22.3N,根冠比為0.271,。通過對(duì)比試驗(yàn),,證明仿形鎮(zhèn)壓裝置更能保證鎮(zhèn)壓均勻性。

    Abstract:

    According to the deficiencies in uneven soil compaction and insufficient intensity in hilly region,,the bidirectional profiling and strength adjustable press device was designed based on the hilly agricultural mechanical characteristics, which mainly consisted of profiling adjusting mechanism,,strength adjusting mechanism and press wheel. The interaction model of soil and press wheel was established. Force analysis of press wheel was carried out to determine working process of press wheel. Force analysis of press device was carried out to determine the reasonable range of spring deformation (suppression of strength). The contrast test was done to verify the device performance of profiling, and the orthogonal tests were done to verify the hilly terrain repression wheel, soil interaction models along the correctness of draft force (activity-based costing) and ratio of root to shoot (crop growth state), and the factors affecting the changing rule of performance test. The effects of device under type of press wheel, intensity of the suppression and forward velocity were studied. In order to achieve the purpose of balancing the various indicators, the best combination was determined by using comprehensive weighted scoring method. The results of orthogonal tests of L9(34) showed that the primary sequence of factors was as following: press wheel, suppress strength and forward velocity, and the optimal combination was: rubber press wheel, spring deformation amount of 20mm and forward velocity of 1m/s. Under the conditions, the rate of draft force was 22.3N, and the ratio of root to cap was 0.271. The result of contrast test showed that profiling press device was good in ensuring the uniformity of soil compaction. The result provided valuable information for the design of press wheel of planter.

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趙淑紅,劉宏俊,譚賀文,楊悅乾,張先民.丘陵地區(qū)雙向仿形鎮(zhèn)壓裝置設(shè)計(jì)與試驗(yàn)[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2017,48(4):82-89. ZHAO Shuhong, LIU Hongjun, TAN Hewen, YANG Yueqian, ZHANG Xianmin. Design and Experiment of Bidirectional Profiling Press Device for Hilly Area[J]. Transactions of the Chinese Society for Agricultural Machinery,2017,48(4):82-89.

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  • 收稿日期:2016-08-11
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  • 在線發(fā)布日期: 2017-04-10
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