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油菜聯(lián)合收獲機(jī)滾筒篩式復(fù)清裝置設(shè)計(jì)與試驗(yàn)
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國(guó)家自然科學(xué)基金項(xiàng)目(52075210)、中國(guó)博士后科學(xué)基金項(xiàng)目(2020M682438)和財(cái)政部和農(nóng)業(yè)農(nóng)村部:國(guó)家現(xiàn)代油菜產(chǎn)業(yè)技術(shù)體系專項(xiàng)(CARS-12)


Design and Experiment of Cylinder Sieve Type Re-cleaning Device for Rape Combine Harvester
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    摘要:

    針對(duì)油菜聯(lián)合收獲機(jī)脫粒分離作業(yè)后脫出物組分雜,,籽粒細(xì)小不易分離,,導(dǎo)致清選作業(yè)清潔率低、人工復(fù)清勞動(dòng)強(qiáng)度大等問題,,設(shè)計(jì)了一種掛接在糧箱上的模塊化滾筒篩式復(fù)清裝置,。基于運(yùn)動(dòng)學(xué)與動(dòng)力學(xué)分析了物料提升螺旋輸送器和篩分裝置的結(jié)構(gòu)參數(shù)與運(yùn)行參數(shù)范圍,;以滾筒篩式復(fù)清裝置的損失率,、清潔率及篩分效率為評(píng)價(jià)指標(biāo),以滾筒篩轉(zhuǎn)速,、篩網(wǎng)內(nèi)助流螺旋葉片螺距和篩孔直徑為影響因素,,基于EDEM開展了三因素三水平正交試驗(yàn),確定了最佳參數(shù)組合,,并利用收獲關(guān)鍵部件試驗(yàn)臺(tái)開展了驗(yàn)證試驗(yàn),。仿真結(jié)果表明:當(dāng)喂入量為0.6kg/s時(shí),滾筒篩式復(fù)清裝置的較優(yōu)參數(shù)組合為篩孔直徑5mm,、滾筒篩轉(zhuǎn)速105r/min,、篩網(wǎng)內(nèi)助流螺旋葉片螺距250mm,此時(shí)滾筒篩式復(fù)清裝置損失率為0.92%,、清潔率為98.96%,、篩分效率為95.12%。臺(tái)架驗(yàn)證試驗(yàn)表明,,帶有滾筒篩式復(fù)清裝置的清選系統(tǒng)工作順暢,,在最佳參數(shù)組合條件下,滾筒篩式復(fù)清裝置的損失率為0.96%、清潔率為98.67%,、篩分效率為95.36%,對(duì)比未增加滾筒篩式復(fù)清裝置前清潔率提升了4.38個(gè)百分點(diǎn),。研究可為油菜聯(lián)合收獲機(jī)清選裝置結(jié)構(gòu)改進(jìn)和優(yōu)化提供參考,。

    Abstract:

    Existing rape combine harvester has the challenges to separate the small rapeseed from the threshing outputs whose components are mixed, highlighting the need to improve the cleaning rate to reduce the labor consumption in manual re-cleaning process. Therefore, a modularized re-cleaning cylinder sieve, which could hung on the grain tank, was designed. Based on the kinematics and dynamic analysis, the range of structure and operation parameters of the material lifting screw conveyor and screening device were analyzed. A three-factor and three-level orthogonal experiment was carried out by using EDEM. The loss rate, cleaning rate and screening efficiency were taken as the indexes. The rotating speed of cylinder sieve, the screw pitch of the spiral blade, and the diameter of the sieve hole were taken as the factors. The optimal parameter combination was determined by the orthogonal experiment, and verified by the bench verification experiment. The simulation results indicated that the optimal parameter combination of the diameter of sieve hole, the rotating speed of cylinder sieve, and the screw pitch of the spiral blade were 5mm, 105r/min and 250mm, respectively. When the feeding rate was 0.6kg/s, under this condition, the loss rate, cleaning rate, and screening efficiency of re-cleaning cylinder sieve were 0.92%, 98.96% and 95.12%, respectively. The results of bench experiment showed that the cleaning system with re-cleaning cylinder sieve could work smoothly. Under the optimal parameter combination, the loss rate, cleaning rate, and screening efficiency were 0.96%, 98.67% and 95.36%, respectively. Compared with the performance of the cyclone separation cleaning device without re-cleaning cylinder sieve, the cleaning rate was improved by 4.38 percentage points. The research could provide a reference for the structural improvement and optimization of cleaning device of rape combine harvester.

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袁佳誠(chéng),楊佳,萬星宇,廖宜濤,廖慶喜.油菜聯(lián)合收獲機(jī)滾筒篩式復(fù)清裝置設(shè)計(jì)與試驗(yàn)[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2022,53(9):99-108. YUAN Jiacheng, YANG Jia, WAN Xingyu, LIAO Yitao, LIAO Qingxi. Design and Experiment of Cylinder Sieve Type Re-cleaning Device for Rape Combine Harvester[J]. Transactions of the Chinese Society for Agricultural Machinery,2022,53(9):99-108.

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  • 收稿日期:2021-10-28
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  • 在線發(fā)布日期: 2022-09-10
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