How to specify contect type

Hey Guys

I am very new to solidwork simulation ,but i have intrest to learn,

I design one conveyor ,it used  for iron ore,

Here i have attached soldwork file and detail picture, i want to know which type of contact type have to apply,where to appaly,and also,where and how  to apply load

to analys this stucture wcan carry the

SolidworksSimulation