| The large caliber artillery with ammunition automatic loading system is an inevitable requirement. Taking some artillery ammunition automatic loading system with roller chain of charge push and chain magazine as the research object in this paper, contrapose the existing roller chain of charge push and chain magazine in more energy consumption, the impact of a large engagement,unsteady running characteristics, study the silent chain and use it in the ammunition automatic loading system, to achieve lower energy consumption and increase the stability of chain drive.Take the Principle of gear rack meshing to derive the silent chain sprocket modification coefficient, and analyzed the relationship of the number of teeth and apothem with modification coefficient. Use the known parameters of the sprocket which obtained the involute tooth profile equation, draw the charge pushing sprocket and sprocket of unequal pitch magazine in PRO/E. Inside tooth profile equation of silent chain is obtained by coordinate transformation theory, with a circular arc instead of the inside tooth profile of silent chain, Conducive to silent chain manufacture and measure. Derived for the turning radius of the chain drive expression with kinematic theory, analysis showed that the turning radius of the chain must be greater than half the chain pitch.Build solid model with roller and silent charge push chain, long-pitch roller chain and unequal pitch magazine use Ideas. Four different solid models will be imported into ADAMS respectively, put on the same hydraulic actuation on the roller and the silent charge push chain, in the long-pitch roller chain pitch magazine and the unequal pitch magazine put the same parameters of the motor drive, do the four different simulations. The simulation results comparison shows that Silent chain used in charge push chain and the unequal pitch magazine can effectively reduce the meshing impact, Increase the stability of running, Thereby reducing the energy consumption of ammunition automatic loading system. |
