本文選題：青草 + 制辮��； 參考：《農(nóng)業(yè)機(jī)械學(xué)報(bào)》2017年07期

【摘要】：為滿足青藏高原等牧區(qū)青草制辮機(jī)械化需求,參考賽絡(luò)紡的工作原理,設(shè)計(jì)了一種青草制辮成型裝置,實(shí)現(xiàn)草辮的加捻和合股。通過(guò)力學(xué)分析,得知青草制辮成型與草辮軸向移動(dòng)速度、加捻滾筒旋轉(zhuǎn)速度、加捻滾筒半徑以及喂入量有關(guān),并分析出穩(wěn)定草辮的最終捻度和捻回角,與加捻滾筒轉(zhuǎn)速及牽引輥線速度有關(guān),與加捻時(shí)間和加捻區(qū)的長(zhǎng)度無(wú)關(guān)。結(jié)合實(shí)際,提出將草辮承受的最大拉力作為評(píng)價(jià)草辮緊實(shí)度考核指標(biāo)的一種方法,并對(duì)草辮進(jìn)行了受力分析,得出草辮所能承受的最大拉力與捻回角成正相關(guān)。樣機(jī)試驗(yàn)結(jié)果表明,成型機(jī)生產(chǎn)率為427 kg/h,工作功率為0.428 k W,成型草辮堆積密度為143.3 kg/m~3,成型草辮所能承受的最大拉力為300~350 N,試驗(yàn)結(jié)果滿足實(shí)際作業(yè)要求。
[Abstract]:In order to meet the mechanization requirement of grass braiding in pastoral areas such as the Qinghai-Tibet Plateau, a braiding forming device for grass braid was designed according to the working principle of Siro spinning, which can realize twisting and jointing of grass braids. Through mechanical analysis, it is found that the forming of green grass braid is related to the speed of axial movement of the grass braid, the rotation speed of the twisting drum, the radius of the twisting drum and the feeding amount, and the final twist and twist angle of the stable braided grass are analyzed. It is related to the rotation speed of the twisting drum and the linear speed of the traction roller, and has nothing to do with the twisting time and the length of the twisting area. Combined with the practice, a method of evaluating the tightness of the braided grass braids is put forward, and the stress of the braids is analyzed. It is concluded that the maximum tensile force of the braids is positively related to the twist angle. The results of prototype test show that the productivity of the molding machine is 427 kg / h, the working power is 0.428 kW, the packing density of the braid is 143.3 kg / m ~ (-3), and the maximum tensile force of the braid is 300 ~ 350N. the test results meet the practical requirements.
【作者單位】： 中國(guó)農(nóng)業(yè)大學(xué)工學(xué)院;
【基金】：農(nóng)業(yè)部公益性行業(yè)科研專(zhuān)項(xiàng)(201203007)
【分類(lèi)號(hào)】：S817.1

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