Design and structural analysis of a mechanism for positioning heavy vehicle chassis

Proper and secure positioning of heavy vehicle chassis is crucial in ensuring efficiency and safety, particularly in painting, manufacturing, and maintenance processes. This study focuses on the structural analysis and prototype production of a positioning system capable of rotating heavy vehicle chassis across three axes and setting them in an upright position. To achieve this, a scissor platform was developed to facilitate three-axis rotation, and a dedicated mechanism was designed for upright positioning. Initially, a 3D model of the system was created, and structural strength was evaluated through Finite Element Analysis (FEA), assessing stress distribution under load and deformation during rotation. The analysis revealed a maximum stress value of 190.2 MPa in the chassis tilting mechanism and 204.2 MPa in the scissor platform, with a maximum displacement of 3.1 mm observed in the scissor platform. Following optimization based on these results, a prototype was produced and tested under real working conditions. The findings validate the system’s durability and functionality, demonstrating a reliable and effective solution for the positioning of heavy vehicle chassis.