making conveyor belt animation

i am trying to show an animation of some conveyor belt flights going around on a conveyor. i am not sure if i have this mated wrong or if i am just overlooking something but it just isn't working out for me the way i want it to. just trying to figure out the best way to make this work. since this is my first animation i am up against a wall trying to figure it out. i have attached a zip file for anyone that might be able to help. thank you.