Enhancing the Obstacle-crossing Performance of All-Terrain Vehicle Based on Variable-wheelbase Chassis *

A six-wheel vehicle chassis scheme with a variable wheelbase is proposed to improve the obstacle-crossing performance of a vehicle. The influence of wheelbase on the obstacle height the vehicle can overcome is explained by mechanical analysis. Through numerical calculation of the results of mechanical analysis, the numerical relationship between wheelbase and obstacle height is obtained. According to the numerical relationship between wheelbase and obstacle height, the wheelbase change strategy is proposed. Combined with the corresponding wheelbase change strategy, the ability to overcome obstacle will be improved.

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