Aiming at the problem of heat dissipation and environmental pollution during the open-port transportation of high-temperature ferrofluid torpedo tanker, this paper designs a new type of vehicle-mounted torpedo tanker lidding device. The device adopts vehicle-mounted battery power supply and is driven by electrome chanical-hydraulic integration coordination to automatically complete the lidding and uncovering action. In order to verify the feasibility of the device design, this paper combines the virtual simulation method to carry out a comprehensive assessment. Firstly, the overall mechanical structure of the device was analyzed by rigid-flexible coupling using Recurdy, which verified the structural strength. Subsequently, Simulink, Recurdyn and AMESim were used to carry out a joint simulation to assess the dynamic performance of the system. Finally, the prototype was fabricated and verified in the field. The research results show that the mechanical structure has a maximum stress of 63.3 MPa and a safety factor ≥ 4, confirming a rational design. The maximum operating pressure of the hydraulic system is 4.5 MPa, which is able to effectively drive the device, and the cooperative work with the electronic control system shows high reliability. The actual operation test shows that the device can significantly reduce the temperature drop of iron in the torpedo tanker, providing a practical solution for the green development of iron transportation in the metallurgical industry.