Design Improvement and Test of Aeolian Sand Mixing Cutter
In order to solve the core problems existing in the development of aeolian sand equipment and discuss the interaction mechanism between mixing cutter and aeolian sand-soil modification material,this paper analyzed its working principle based on the national standard rotary tiller IT245,and designed a special mixing cutter for aeolian sand improvement on this basis.Through the Discrete Element Method simulation and laboratory tests,the mixing effect of IT245 and special cutter at 5 depths was analyzed by using the ratio of soil modification material to sample volume as evaluation index.The larger the deflection angle was,the larger the volume ratio of the soil material was,and when the depth was 150-120 mm and deflection angle was 60°,the maximum value was 35.67%.The larger bending angle was,the larger volume ratio of soil modification material was,and when the depth was 150-120 mm,bending angle was 130°,the maximum value was 36.02%.The comparison results of mixing effect between aeolian sand mixing cutter and national standard rotary tiller IT245 showed the shallower the depth,the larger the volume ratio of the soil modification material,the better the mixing effect.when the depth was 90-60 and 60-30 mm,the volume ratio of soil modification material of aeolian sand and soil mixing cutter with deflection angle 60° increased by 3.19%,5.11%,respectively.The mixing process and mixing effect of aeolian sand and soil modification material were studied,which provided basis for the design and optimization of aeolian sand mixing cutter and aeolian sand treatment machinery.
国家科技期刊平台
NSTL
万方数据
维普
