The longitudinal axial flow threshing cylinder of the full feeding rice combine harvester is widely used in China and works with violent vibration. To explore source excitation affecting vibration to reduce vibration, a finite element modal analysis multipoint input output (MIMO) test were performed solve natural characteristics. By analyzing frequency, we concluded that main reason for resonan...

In order to solve the problems of high millet agglomerates rate, damage and undelivered net loss rate in process mechanized harvesting millet, a longitudinal axial flow-staggered flexible threshing device for was designed on basis existing device. The “staggered teeth” drum micro rotating circular tube concave screen work together realize low millet. pre experiment carried out first, factors th...

It is urgent to study the damage mechanism of corn kernels and find ways reducing rate kernel breakage in mechanical threshing. This paper, by studying curves deformation characteristics with different moisture contents, points out brittle fracture low content, clarifies variation law properties contents. The experimental data fatigue load - life contents were described power function equation....

After years of use, there’s oil loss on the asphalt pavement. bond strength aggregate decreases. Loose threshing is serious. In order to improve pavement performance, Extend service life pavement, Improve safety aircraft operation. we test AC-20 modified mixture runway Da Lian Airport from many factors, including raw materials, admixtures, gradation design, optimum ratio stone, then find best w...