秸秆捡拾压块装包一体机关键部件设计及仿真

发布时间：2018-05-28 19:42

本文选题：秸秆收获 + 捡拾　；参考：《河北科技师范学院》2017年硕士论文

【摘要】：玉米秸秆资源丰富,但由于收集、储运困难,大部分被废弃或焚烧,造成秸秆资源大量浪费。秸秆捡拾压块装包一体机是一种新型复合作业机械,可以实现对青/黄储玉米秸秆一次连续完成切割、捡拾、粉碎、压块、装包等一体化作业。与其他捡拾压块机械相比,可直接完成秸秆饲料收获青储。本文在国内外秸秆捡拾压块机研究的基础上,对收获粉碎式秸秆捡拾压块装包一体机的捡拾机构、二次粉碎抛送装置、压块装置进行了关键部件的设计及仿真,通过仿真分析与样机试验相结合的方法,对一体机总体结构和关键部件进行了研究,为后续结构优化设计提供参考依据。本文主要研究内容包括:1.介绍了秸秆捡拾压块机的研究意义、国内外研究现状和发展趋势。以YK-70型秸秆捡拾压块装包一体机为基础,对其进行了总体结构设计,确定了工艺原理及主要技术性能指标。2.通过理论分析与计算机辅助设计相结合,对捡拾割台、粉碎装置、压缩机构以及物料输送装置等关键部件进行了设计及动力学分析。利用Solidworks软件对关键零部件进行了静力学分析、疲劳分析、模态分析,为以后改进优化设计提供了重要理论依据。3.对一体机的秸秆压缩过程工作原理进行了分析,设计了W'缩过程液压系统工作原理图和液压控制方法,对基于PLC系统的软、硬件进行了设计。4.对秸秆捡拾压块装包一体机关键部件进行了田间作业试验。试验表明捡拾割台捡拾损失率为1.92%,秸秆压块密度为133.4 kg/m3,作业效率达到了2.48 t/h,各部件达到了设计指标要求,验证了理论设计的正确性及可靠性。
[Abstract]:The corn straw resources are abundant, but because of the collection, storage and transportation difficulties, most of them are abandoned or burned, resulting in a large amount of waste of straw resources. Straw picking and packing machine is a new type of compound working machine, which can realize the integrated operation of cutting, picking, crushing, pressing and packing of green / yellow storage corn straw at one time. Compared with other pick-up block machinery, straw feed can be directly harvested green storage. On the basis of the research of the straw pickup press at home and abroad, the paper designs and simulates the key parts of the picking mechanism, the secondary crushing and throwing device and the pressing device of the harvest and comminuted straw pickup and packing machine. By combining the simulation analysis with the prototype test, the overall structure and key components of the integrated machine are studied, which provides a reference for the subsequent structural optimization design. The main contents of this paper include: 1. This paper introduces the research significance, research status and development trend of straw pickup press at home and abroad. On the basis of YK-70 type straw pick-up and packing machine, the overall structure of the machine is designed, and the process principle and main technical performance index .2. are determined. Through the combination of theoretical analysis and computer aided design, the key components such as pick-up and cutting table, crushing device, compression mechanism and material conveying device were designed and dynamic analyzed. The static analysis, fatigue analysis and modal analysis of key parts are carried out by using Solidworks software, which provides an important theoretical basis for improving the optimization design in the future. This paper analyzes the working principle of straw compression process of integrated machine, designs the working principle diagram and hydraulic control method of hydraulic system in W' shrinkage process, and designs the software and hardware based on PLC system. The field operation test was carried out on the key parts of the integrated machine for picking up and packing straw blocks. The results show that the picking loss rate of pick-up table is 1.92, the density of straw block is 133.4 kg / m ~ (3), the working efficiency is 2.48 t / h, and the components meet the design requirements, and the correctness and reliability of the theoretical design are verified.
【学位授予单位】：河北科技师范学院
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：S817.1

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