【作者】 齐垂辉；

【导师】 霍光青；

【作者基本信息】 北京林业大学 ， 机械设计及理论， 2006， 硕士

【摘要】 遥控式立木整枝机是一种抱在树干上,通过无线遥控来实现自动整枝作业的便携式机械。整枝机在绕树干螺旋上升的过程中利用链锯进行整枝。本文首先介绍了遥控式立木整枝机的工作原理,并分析了设计避让机构的必要性。针对整枝机的避让机构做了以下几方面的研究:1、介绍了避让机构的主要组成,分析了各部件的主要作用与运动情况,提出了避让机构主要参数的设计原则。2、分析了基于Matlab/Simulink进行机构运动仿真的三种实现方法及其特点。在此基础上,利用SimMechanics工具箱对曲板上摆运动进行了仿真。3、建立了以在最小工作载荷P1下时弹簧高度H1最小和质量最轻的多目标函数优化数学模型,采用遗传算法进行优化设计。最后通过Matlab遗传算法工具箱对优化数学模型进行了求解。更多还原

【Abstract】 The remote control pruning machine is one kind of portable machinery which is used to prune branch around tree trunks achieve through wireless remote control. In the process of spiraling climbing around the trunk,the pruning machine is pruning by chain saw. This thesis first introduced the working principles of the remote control pruning machine,And proposed the necessity to design the branch-avoiding mechanism .In the thesis,mainly study on the branch-avoiding mechanism of the remote control pruning machine ,the main work is following:1、Introduced the main composition of the branch-avoiding mechanism, analyzed main function and the movement situation every parts. And finally proposed the principle of design of the pruning machine.2、Analyzed the three methods and its characteristic of Kinematics simulation for the branch-avoiding mechanism with Matlab/Simulink, On this basis, simulated the movement of crank swinging up.3、According to the design request for the branch-avoiding mechanism, the multi-objectives function optimization mathematical model is established as Minimum height(H1) at smallest working load(P1),and the minimum weight of spring. Finally,I optimized the spring by Genetic Algorithm with GOAT toolbox of Matlab and gained the optimized result.更多还原