College of Mechanical Engineering, Taiyuan University of Science and Technology

【目的】针对大型矿用自卸车厢斗的轻量化设计需求,基于结构仿生学对厢斗的筋板布局进行优化研究。【方法】介绍了某大型矿用自卸车厢斗的基本结构,分析了厢斗在各工况下的承载特点,选用厢斗满载匀速和满载静止工况作为厢斗底板的极限工况,并通过仿真分析研究了厢斗的刚度和强度;总结了叶脉分枝结构的形态特点,从载荷、结构、功能三个方面阐述了叶脉分枝结构与厢斗底板的高度相似性,设计了基于叶脉分枝形态的厢斗筋板新布局,得到新厢斗模型;采用有限元分析对比验证优化前后厢斗的力学性能。【结论】结果表明,新厢斗筋板布局的承载性能更优,应力分布更加均匀,底板承受的载荷传递到了下方各筋板,有效减轻了主梁的承载负担,刚度、强度分别提高了20.32%、32.37%,重量降低1.86%.

【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 car-riage 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 mor-phological characteristics of vein branching structure are summarized, and the high similarity be-tween 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%.

太原科技大学科研启动基金资助(20212040);山西省来晋工作优秀博士奖励资助基金(20222126)

黄蕾,杨国彪,王志霞,等.大型矿用自卸车厢斗筋板布局仿生优化设计[J].太原理工大学学报,2023,54(4):741-747.

HUANG Lei,YANG Guobiao,WANG Zhixia,et al.Layout optimization and design of ribs for the carriage of large mining dump truck based on bionic structure[J].Journal of Taiyuan University of Technology,2023,54(4):741-747.