The production line uses castings to cross the platform car Automated cross-platform vehicle, with a load capacity of 30 tons, battery-powered transportation platform vehicle. The customer is an old customer of our company, because we purchased our trolley car before, and after using it, the customer responded with high quality and purchased two of them again. The platform car purchased this time is mainly used to transport castings on the production line. Because of the consideration of automating the operation of the flat car in the later stage, the PLC interface is reserved on the straddle car. It is used to realize automated transportation in the later stage.