| This article through to the characteristics of our country artificial forest logging environment and the analysis and research of the current situation of the development of the cutting machine at home and abroad, combined with the structure and working principle of the existing cutting machine, to determine the cutting, thinning equipment are suitable for plantation forest production in our country. The structure of the main structure is tracked, and the structure of the rotary cutting tool is selected by the logging device. On this basis, the overall structure and layout of the crawler thinning harvester were determined, and their respective main design parameters And the design for main parameters.In this article, the rotary tool is made up by crosscut saw, crushing blade and precision sleeve. we take the saw with 96 teeth,2.5mm thick and 350mm diameter as example to analyze the cutting theory of crosscut saw, and calculate the parameters such as cutting force, feed force and cutting power. Then I confirmed the max feed force, cutting force and cutting power in the cutting process. Not only solved the problem of the buck cutting, and put forward a new type of combination tool cutting method. At the same time make a design and analysis on the important institution, such as logging mechanism guides, cam locking mechanism, spindle assembly, the centrifugal clutch.In the study of the composition of crawler walking mechanism,traveling theory and steeri ng performance,we calculated the turning radius, friction force and turning resistance moment i n the slip and ideal state. The main technical parameters of the walking mechanism (climbing angle, travel speed, ground pressure), and the structure form and the concrete installation dimensions of the four wheel belt are also determined, In the slip and ideal state, the turning radius, friction force and turning resistance moment are calculated. The main technical parameters of the walking mechanism (climbing angle, travel speed, ground pressure), and the structure form and the concrete installation dimensions of the" four wheel belt "are also determined.With the help of ANSYS finite element analysis software, we analyse the key parts for static and modal, stress, strain and deformation cloud images are obtained, to test the strength, stiffness and stability of the key parts. In the Solidworks environment, the key parts of the whole machine are set up, the virtual assembly and the Motion motion analysis are carried out, which provide the guidance for the improvement and optimization design in the future.. At the same time, the walking speed and the climbing angle of the walking mechanism are tested and the accuracy of theoretical calculation is verified. |
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