弹齿滚筒式捡拾装置的弹齿动力学研究

发布时间：2018-07-02 23:05

本文选题：弹齿 + 捡拾装置　；参考：《内蒙古农业大学》2017年硕士论文

【摘要】：压捆机是我国目前应用最广泛的牧草收获机械之一,弹齿滚筒式捡拾装置是压捆机的重要工作部件,对捡拾装置进行深入研究对提高我国压捆机的工作性能有重要意义。捡拾装置关键部件弹齿的受力情况不仅影响其材料、尺寸、强度等参数的选择,也影响捡拾装置的捡拾性能。弹齿上的载荷会影响到弹齿的强度和刚度计算,也是捡拾装置机械系统动力计算的重要依据。本文基于试验和仿真分析方法进行了弹齿动力学研究,内容如下:(1)通过在小方捆捡拾压捆机捡拾装置试验台上,对弹齿的捡拾过程进行应变测试试验研究,得出弹齿在捡拾过程中端部所受应力的情况。(2)对弹齿在捡拾牧草的时刻进行受力分析,在ADAMS中建立捡拾装置弹齿的动力学仿真模型,得到弹齿端部的受力情况,通过和试验的结果进行对比,验证了仿真的正确性。(3)用有限元软件ANSYS对弹齿进行了静力学分析和模态分析,为弹齿的设计和改进提供了理论依据。
[Abstract]:Binder is one of the most widely used forage harvesting machines in our country at present. The pick-up device is an important working part of the binder. It is very important to study the pick-up device to improve the working performance of the binder in our country. The force situation of the key parts of pick-up device not only affects the selection of material, size, strength and other parameters, but also affects the picking performance of pick-up device. The load on the projectile teeth will affect the calculation of the strength and stiffness of the projectile teeth, and it is also an important basis for the dynamic calculation of the mechanical system of the pick-up device. Based on the experimental and simulation analysis methods, the dynamics of the elastic teeth is studied in this paper. The main contents are as follows: (1) the strain test and research on the pick-up process of the Xiao Fang binder are carried out on the test bench of the pick-up device of the binder. The stress at the end of the picking process is obtained. (2) the force of the projectile tooth is analyzed at the time of picking up the forage grass, and the dynamic simulation model of the picking device is established in Adams, and the force on the end part of the projectile tooth is obtained. The simulation results are compared with the experimental results. (3) the static analysis and modal analysis of the elastic teeth are carried out with the finite element software ANSYS, which provides a theoretical basis for the design and improvement of the projectile teeth.
【学位授予单位】：内蒙古农业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：S817.115

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