Abstract
This study examines the passability of a novel arch-waist flexible chassis designed for hilly and mountainous terrain. Featuring a wheel-track composite structure and flexible hinge mechanism, the chassis allows independent movement between track and vehicle in the longitudinal plane, improving adaptability and stability. Experiments assessed vertical obstacle-crossing and trench-crossing performance. Results show the chassis crosses vertical obstacles up to 160 mm with horizontal tracks, increasing to 240 mm with pitch motion. It can cross trenches up to 363 mm wide when tracks are horizontal; wider trenches require pitch adjustment. These findings provide theoretical and practical guidance for designing adaptable agricultural machinery for complex terrains, advancing mechanization in mountainous regions.
