Structural design and test of arch waist dynamic chassis for hilly and mountainous areas

In order to meet the terrain adaptability, flexibility, and stability requirement of the agricultural power chassis when driving in complex terrain and narrow fields in hilly and mountainous areas, an arch waist power chassis suitable for a narrow plot with strong ground adaptability is designed. On the undulating road surface, the longitudinal pitch of the track can be used for active and passive ground copying to exert the maximum driving force. Through the theoretical analysis of the whole machine, it is obtained that the minimum turning radius of the chassis is 568.5 mm between the two rear wheels, which is about 34.12% of the length of the whole machine. The longitudinal uphill slip angle alpha(phi) is 26.9-42.84 degrees, and the longitudinal downhill slip angle alpha(phi)' is 29.28-43.7 degrees. Finally, the performance test of the whole machine is carried out. The test results show that the arch waist power chassis has a minimum turning radius of 1230.7 mm in field driving, which has good steering maneuverability and can adapt to the narrow operating environment in hilly and mountainous areas; the longitudinal downhill slip angle is 32 degrees, and the longitudinal uphill slip angle is 28 degrees. The longitudinal downhill slip angle is about 1.14 times the longitudinal uphill slip angle, and the lateral slope slip angle is 27 degrees, which meets the requirements for stable operation in hilly and mountainous terrain.

Automated summary

This article designs an agricultural power chassis suitable for driving in complex terrain and narrow fields in hilly and mountainous areas. The chassis has good ground adaptability and steering maneuverability. Theoretical analysis and performance testing confirm its excellent driving performance and stable operation capability.