By dynamically analyzing the stress state between the skip dump wheels and dump rail when the dump wheels of up-open fan gate skip are getting into the skip rail, and the tension changes of skip hoist rope, the related mechanical model and mathematic model are established and corresponding parameters are obtained.

Research on virtual prototype technology of unloading device for top opening fan gate skip;

Based on the study and analysis of Y-shaped atomizers and their atomization mechanism, a new-type of fan-shaped spray atomizer is developed and experimentally studied.

Through analysis 49 inclined basin large-angle fan seam to fifth coal mine of Fengfeng mining bureau,mining working isn′t safety with conventional trapezoid support, it isn′t rational,too in economy, coal getting working can′t be contented irregular trapezoid section I-steel support is adapted at first,it solves technical problem of mining,and gains good ecomomic and social result.

This paper proves that the coronas of fans are sequential graphs.

A practicable analytic solusion is obtained for any sector by means of Fourier series with singular items.