折叠式高速公路绿化带高效修剪机设计与研究

发布时间：2019-03-05 15:40

【摘要】：本文主要是在已有的高速公路修剪机械实体的基础上,进行进一步设计,实现结构的优化和功能的创新。根据前期的规划和设计目标,进行三维模型的建立,并对模型进行运动学仿真、主要零部件的有限元分析以及部分功能的自动控制。新型修剪机械实现了绿化带同时多面剪切的进行,并通过折叠变形实现大面积的单面修剪,实现对于多面刀具水平位置的自动控制,对于提高工作效率以及增强修剪质量有重要意义。本文是在了解了国内外园林绿化机械研究现状与发展趋势的基础上,针对新的绿化带的修剪要求,完成修剪机械的三面修剪和水平修剪距离的自动控制设计要求。实现该修剪机械工作高效、修剪姿态多样、修剪适应性强以及智能化水平高等优势。首先,借鉴农业收获机械的往复式切割技术,再根据绿化带植物的特性,对修剪刀具进行适当的改造,选择合适的摆环机构作为动力的转换,由液压马达为刀具提供动力,通过液压缸伸缩来转换三面刀具的相对位置。由于无法直接制造样机,因此本次设计选择UG8.0软件对修剪机进行三维模型的绘制,结合ADAMS软件,对其模型进行运动学及动力分析。同时利用ANSYS对重要部件摆环机构进行有限元分析,得到主要零部件主要应力分布,为下一步主要零部件的改进提供了数据支持。最后,利用单片机技术实现对于三面刀具水平位置的自动控制。
[Abstract]:In this paper, on the basis of the existing highway pruning mechanical entities, further design is carried out to realize the optimization of the structure and the innovation of the function. According to the previous planning and design objectives, the three-dimensional model is established, and the kinematics simulation of the model, the finite element analysis of the main parts and the automatic control of some functions are carried out. The new pruning machine realizes the multi-side shear at the same time in the green belt, and realizes the large area single-side pruning by folding deformation, and realizes the automatic control of the horizontal position of the multi-side cutting tool. It is of great significance to improve the efficiency and the quality of pruning. On the basis of understanding the current research situation and development trend of garden greening machinery at home and abroad, this paper aims at the pruning requirement of new green belt, and completes the automatic control design requirements of three-sided pruning and horizontal pruning distance of pruning machinery. The pruning machine has the advantages of high efficiency, diverse pruning posture, strong pruning adaptability and intelligent level. First of all, the reciprocating cutting technology of agricultural harvesting machinery is used for reference, and then according to the characteristics of green belt plants, the trimming tool is reformed properly, and the appropriate swing ring mechanism is chosen as the power conversion, and the hydraulic motor is used to provide power for the tool. The relative position of the three-sided tool is converted by hydraulic cylinder expansion. Because the prototype can not be manufactured directly, the UG8.0 software is chosen to draw the three-dimensional model of the trimmer, and the kinematics and dynamic analysis of the model is carried out by combining with the ADAMS software. At the same time, the main stress distribution of the main parts is obtained by finite element analysis of the swing ring mechanism of the important parts by using ANSYS, which provides the data support for the improvement of the main parts in the next step. Finally, the automatic control of the horizontal position of the three-sided cutter is realized by using the single-chip microcomputer technology.
【学位授予单位】：山东理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U418.325

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