| Manual snow removal is not only take a long time but also wastes of labor, snowremoval by chemical agents will cause environmental pollution, and the use of large vehiclesfor snow sweeper has a lot of inconvenience in offices, institutions, schools, communitywhere people’s daily lives link more closely, but the small spiral snow sweeper for clearingfloating snow are able to play an important role in these areas. Because our country startedlate on research of snow sweeper machine, our technology is relatively backward some of thedeveloped countries, introducing and using of the technology of foreign needs more time,more expensive, and does not fully conform environment and traffic and so on. Therefore,researching the small spiral snow sweeper that meet China’s actual situation is imperative.The spiral cutter and frames are two important parts of small spiral snow sweeper,therefore, in this paper, the spiral cutter and frame based on the related data and patent isdesigned, and the finite element analysis is carried on to verify its feasibility. The maincontents are as follows:(1) The paper analyzes the use of snow sweeper machine under different conditions, andintroduces the working principle, characteristics and assembly of small spiral snow sweeper.Studying the parameters of physical and mechanical properties of snow provides a theoreticalbasis for more in-depth analysis of the physical and mechanical properties of snow and relatedcalculations.(2) Based on the mechanical analysis of the micro-element snow particles, the influenceof parameters of the spiral cutter to power and snow removal efficiency is researched and thespiral cutter is designed based on the results of the analysis by choosing appropriate parameter;according to the basic requirements of frame designing, the frame of small spiral snowsweeper is designed by selecting the type of frame and the standard of body size.(3) By meshing to the CATIA3D model of the spiral cutter in the device of collectingsnow, finite element model is established. On the modal analysis, the mode shapes and frequencies of low-order modal is calculated, and vibration mode is explained and whether theresonance will occur between the spiral cutter and excitation sources is verified. On transientdynamic analysis, the stress distribution and displacement deformation is obtained, whetherits strength meets the requirements is verified, and comparing the analysis results of thedifferent thickness, choosing the best thickness.(4) By meshing to the model of the frame, finite element model is established. Staticanalysis includes bending working condition, bending and twisting working condition iscarried on, and the stress distribution and displacement deformation are calculated, whether itmeet the requirements is verified, and comparing the analysis results of the different thickness,choosing the best thickness. On the modal analysis, the mode shapes and frequencies oflow-order modal is calculated, and vibration mode is explained and whether the resonancewill occur between the frame and excitation sources is verified. |
