Abstract: In order to ensure the rationality of a rescue engineering machinery product at the trial-manufacture stage, shortening the development cycle and realize design and evaluation in different places is discussed, which motion simulation technology based on virtual reality modeling language. The whole three-dimensional model is optimized by setting data hierarchy and DOF node. The corresponding equations of motion are obtained by analyzing and simplifying the product’s trajectories. The simulation platform which is independent from CAD software is developed in order to ensure the factuality, real-time and generality of the simulation. The final simulation results are close to the actual running state. The application results are of great theoretical significance and applicable value to the optimization and training of the machine.

Key words: Engineering machinery, Motion simulation, Virtual reality, Virtual reality modeling language