Study of dynamic behaviour of horizontal-axial-roadheader as transverse cutting;

Through analyzing the move of a longitudinal cutting head of roadheader under different working conditions and discussing the simplification of movement, discover the move process and the regularity of spedd change and find out the positions of picks wore fastest under these conditions.

The rule how to adjust orientation of beam sections in UG is studied,the tools for adjusting section orientation of beams are designed,and the method that can adjust section orientation is introduced.

In this paper,the author analyses the base operations of constructing coons surface with the method of manual chain,tells about the judgment of the along direction and the across direction,the method of calculating the number of patches and the ways to select the appearances correctly.