Layout Optimization and Design of Ribs for the Carriage of Large Mining Dump Truck Based on Bionic Structure

Abstract

Purposes In order to meet the requirements of lightweight design of large mining dump truck carriage, the rib layout is optimized on the basis of bionic structure. Methods The basic structure and functional characteristics of a mining dump truck are introduced. The load-bearing characteristics of the carriage under various working conditions are analyzed, and the carriage with full loads and uniform speed or static state is selected as the limit working condition for the bottom plate. The rigidity and strength are studied through simulation analysis. The morphological characteristics of vein branching structure are summarized, and the high similarity between vein branching structure and bottom plate of the carriage is expounded from three aspects of load, structure, and function. A new rib layout and a new carriage are designed according to the morphological characteristics. The mechanical performances of the new carriage are verified through Finite Element Analysis. Conclusion The results show that the load-bearing performance of the new carriage is better, the stress distribution is more uniform, and the load borne by the bottom plate is transferred to the lower rib plates, effectively reducing the bearing capacity of the main beam. Its stiffness and strength are increased by 20.32% and 32.37% respectively, while the weight is reduced by 1.86%.

Keywords

• mining dump truck
• carriage
• layout optimization
• bionic
• lightweight design