基于虚拟样机技术巨菌草小型割捆机工作装置设计与仿真

发布时间：2018-04-26 01:26

本文选题：巨菌草 + 割捆机　；参考：《福建农林大学》2017年硕士论文

【摘要】：随着社会经济的发展,传统的煤、石油、天然气等化石燃料已经无法满足人类发展的需求,为了避免能源危机和环境污染,需大力开发可再生的清洁能源。巨菌草作为一种新的生物能源,能用来代替木本植物制作食用菌的培养基、喂养牲畜和制造沼气等。其茎秆粗壮、根系发达、直立生长,富含糖分和蛋白质,同时也是一种新型高效的经济作物。随着巨菌草的引入及大面积种植,如何合理的收获巨菌草成为首要解决的问题。现阶段因地形和收获方式不同,巨菌草收获机分为大小两种机型。大型的巨菌草收获机大致可分为全机械化和半机械化两大类,半机械化收获机由两台用于收割和剥叶的机器构成,人工辅助喂入、打捆、清理等工序。全机械化是用联合收获机完成收割、剥叶、打捆、清理等全部工序。但大型巨菌草收获机因地形限制,适合在平地收获,若在坡地收获机器易损坏,巨菌草破头率增加,且大型收获机在坡地中难于操作,灵活性差;而现有的小型巨菌草收获机功能单一,效率低下。据此拟研究一种可适应山地收割且操作性灵活的小型巨菌草收获机。研究的小型巨菌草收获机所要实现的功能是将巨菌草收割、打捆,此收获机主要设计内容是根据地面仿形设计出集收割、打捆的割捆工作装置。设计割捆工作装置时,先了解巨菌草的生物力学性质和现有收获机械的特点,提出用虚拟样机技术设计工作装置。先是使用三维软件SolidWorks对工作装置进行模型设计并装配,再用ANSYS软件分析割捆机重要零部件的力学性能,为理论设计提供基础,最后通过ADAMS软件对设计的工作装置进行仿真分析,验证机构的运动合理性,确定割捆装置的关键结构尺寸,做为物理样机的基础。对巨菌草小型割捆机的工作装置的设计改进,不仅提高了机子的操作灵活性,也增强了对巨菌草的收割效率;能减少劳动力投入,增加农民的经济收入。
[Abstract]:With the development of social economy, traditional fossil fuels such as coal, oil and natural gas can not meet the needs of human development. In order to avoid energy crisis and environmental pollution, it is necessary to develop renewable clean energy. As a new bioenergy source, Giant Grass can be used to replace woody plants to produce edible fungi, feed livestock and produce biogas, etc. Its stem is strong, its root system is developed, erect growth, rich in sugar and protein, but also a new efficient cash crop. With the introduction of megalomycetes and planting in large areas, how to harvest megalomycetes rationally becomes the most important problem. At present, due to the different terrain and harvest methods, the megalomonas harvester can be divided into two types: size and size. The large megalomonas harvester can be divided into two categories: fully mechanized and semi-mechanized. The semi-mechanized harvester is composed of two machines used for harvesting and leaf-stripping, and manual auxiliary feeding, bundling, cleaning and so on. Full mechanization is the use of combine harvesters to complete harvesting, leaf stripping, bundling, cleaning and other processes. However, because of the terrain limitation, the large megalobium harvester is suitable for harvesting in the flat land. If the harvesting machine is easy to be damaged in the sloping land, the rate of breaking the head of the giant fungus grass increases, and the large-scale harvester is difficult to operate in the sloping land, and the flexibility is not good. The existing megalomycetes harvester has a single function and low efficiency. Based on this, a small megalobium harvester, which can adapt to mountain harvesting and operate flexibly, is studied. The function of the study is to harvest and bundle the giant fungus and grass. The main design content of the harvester is to design the work device of harvesting and bundling according to the ground copying. The biomechanical properties of the giant fungus and the characteristics of the existing harvesting machinery were first understood in the design of the cutting and baling working device, and the virtual prototype technology was used to design the working device. First, the model of the working device is designed and assembled by using the three-dimensional software SolidWorks, then the mechanical properties of the important parts of the shearer are analyzed by using the ANSYS software, which provides the basis for the theoretical design. Finally, the designed working device is simulated and analyzed through the ADAMS software. To verify the rationality of the movement of the mechanism and determine the key structural dimensions of the cutting and binding device as the basis of the physical prototype. The design and improvement of the working device of the megalomycetes cutting and baling machine not only improves the operating flexibility of the machine, but also enhances the harvesting efficiency of the giant fungus grass, which can reduce the labor input and increase the farmers' economic income.
【学位授予单位】：福建农林大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：S225

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