Based On Finite Element Technology Of Rotary Cultivator Design And Working Parts Simulation Research

Lightweight Tiller is a major work for the hills and mountains of machinery, more suitable for use in Yunnan Province, with the development of finite element technology, traditional design techniques can not meet the requirements of rapid economic development. In computer technology and modeling techniques are rapidly developing, based on the finite element simulation technology Tiller traditional design with the knife is to analyze the vulnerability of the working parts of the modal rotary cutter, rotary knife static analysis and soil kinetics analysis.With rotary tiller as the research object, through theoretical innovation rotary tiller design, which includes specific parameters Rotary Blade size, arranged in order of strength checking arbor, blade, the whole size of the design, each select and energy components, as well as rotary knife modal analysis, static analysis, dynamic analysis, and so cut the soil. In modal analysis of the knife, the main experience is to verify the design chosen knife in the process of farming whether there will be a resonance, whether there will rupture, the results are displayed in the normal course of farming, then there does not appear due to resonance breaking situation. In the static analysis, static stress concentration in the knife blade end, the performance of stress cloud red region, by changing the angle of the trailing end,turn95°to105°, the simulation shows red zone significantly reduced, and therefore end angle modification is effective. For knife dynamic process of soil analysis, by a single factor variable method to determine the energy consumption of the entire model as the merits of the standard model. Knife buried divided into different angles, minimal power consumption in buried when the angle is105°, while reducing energy consumption than traditional designs buried in the120°angle of39.6percent. Different bending angle of the knife cut the soil, smooth overall energy consumption, but the downward trend in energy consumption between30°～40°and50°～60°,and to verify the traditional design bending angle of37°, compared with30°bending angle is reduced energy consumption by28.9%, while the40°to37°relative to a31.5%reduction in energy consumption, it is recommended to select the bending angle rotary cutter40°. In practical work, the design of the rotary tiller, first, upon request, the application of technology to the market more mature vintage rotary tiller to improve the design, followed by the theoretical basis for the simulation and analysis of key components knife, and finally field trials, which this paper is mainly to solve the problem of soil tillage knife, but also provides some theoretical basis for future research.