WTW self-hydraulic flat transporter designed by Wanshan Company, which is equipped with automatically lifting device, is a kind of special vehicle used for carrying ship body sections and other heavy structural body. It is a kind of moving equipment, which is used for serials connection of ship manufacture.The flat transporter consists of frame platform, driving platform, driven suspension, engine power unit, hydraulic lift system, hydraulic driving system, hydraulic steering system, hydraulic oil supply unit, brake system, main and vice driver’s cab, vehicle electrical power system and micro-electric control system.