Batteries not included, some assembly required
What I use is BI2 Grain,<kuid2:30671:27220:1> altho I suspect one of the multiple industry tracks would also work. In addition to keyword "grain" also search for "silo", when you find one you like place the loading chute over the fixed track section and align it. Remember that most industries have to be configured to load or unload in the session itself.