Developments of an Suspension System and a Frame for Autonomous Mobile Robots

Autonomous mobile robots (AMRs) are becoming an indispensable component of modern logistics. The components of an AMR, especially the mechanical system, need to meet the requirements for load capacity and operation within warehouses while still ensuring cost-effectiveness. In this study, we propose a new frame and suspension system for AMRs. With the proposed frame and suspension system, AMRs are expected to carry double the load compared to the old design. Additionally, AMRs are capable of operating stably when traversing rough terrain within the warehouse. In this research, we focus on load analysis and propose a new suspension system for AMRs. The frame of the AMR is also redesigned to accommodate the proposed suspension system and the required load capacity. Mechanical analyses were conducted using Ansys to assess the structural integrity of the frame system. The results indicate that the proposed frame and suspension system can withstand loads of up to nearly 500 kg. Practical experiments with the designed AMR demonstrate that it operates relatively stably under rough terrain conditions.