青草制辫成型装置设计与试验

发布时间：2018-06-18 16:29

本文选题：青草 + 制辫　；参考：《农业机械学报》2017年07期

【摘要】：为满足青藏高原等牧区青草制辫机械化需求,参考赛络纺的工作原理,设计了一种青草制辫成型装置,实现草辫的加捻和合股。通过力学分析,得知青草制辫成型与草辫轴向移动速度、加捻滚筒旋转速度、加捻滚筒半径以及喂入量有关,并分析出稳定草辫的最终捻度和捻回角,与加捻滚筒转速及牵引辊线速度有关,与加捻时间和加捻区的长度无关。结合实际,提出将草辫承受的最大拉力作为评价草辫紧实度考核指标的一种方法,并对草辫进行了受力分析,得出草辫所能承受的最大拉力与捻回角成正相关。样机试验结果表明,成型机生产率为427 kg/h,工作功率为0.428 k W,成型草辫堆积密度为143.3 kg/m~3,成型草辫所能承受的最大拉力为300~350 N,试验结果满足实际作业要求。
[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.
【作者单位】：中国农业大学工学院;
【基金】：农业部公益性行业科研专项(201203007)
【分类号】：S817.1

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