Screw Car/Truck Unloader. The Ranco Twin Screw Car/Truck Unloader is designed as a portable unit for unloading rail cars or trucks. Overloading is eliminated because the twinscrew unloader automatically regulates the flow of material. The transport wheels are positioned to .
The "Screw Conveyor Design Procedure" on the following page gives ten stepbystep instructions for properly designing a screw conveyor . These steps, plus the many following tables and formulas throughout the engineering section will enable you to design and detail screw conveyor .