Simulation Analysis of a Dual-Purpose Intelligent Mobile Platform for Highway and Railway 2019-01-1499

Railways play a huge role in China's transportation industry. In order to ensure intelligence, advanced technology and high efficiency in functions such as railway inspection, rescue and transportation, a dual-purpose intelligent mobile platform for both roads and railways was developed. Due to the height limitation of this platform, resilient wheels and rubber dampers with short stroke are used as the suspension system for the rail chassis. Based on this special suspension form, the dynamic model of the whole platform is derived, and the simulation model of the whole platform is established in the simulation software. The effects of resilient wheels’ axial stiffness, radial stiffness and vertical stiffness, lateral stiffness of rubber dampers on the vertical and lateral stability of the platform were studied. It is found that the increase of the radial stiffness of the resilient wheels will deteriorate the vertical stability and lateral stability of the platform. The increase in the axial stiffness of the resilient wheels will deteriorate the vertical stability of the platform and the lateral stability will be improved. The increase of the vertical stiffness of the rubber dampers will deteriorate the vertical stability of the platform and have less influence on the lateral stability. The increase of the lateral stiffness of the rubber dampers will make the lateral stability of the platform better, but less on the vertical stability. This shows that the result is to prove that the platform can run smoothly on the rail and can optimize the stability within a certain range of stiffness.