重庆大学学报2025，Vol.48Issue(7)：13-26,14.DOI:10.11835/j.issn.1000-582X.2024.221
考虑挡位组合策略的多挡变速箱仿真载荷谱获取方法
Simulation load spectrum acquisition method of multi-gear gearbox considering gear combination strategy
摘要
Abstract
The current gearbox simulation load spectrum is difficult to fully reflect the load state of the gearbox gear,because driver's intention is not fully considered.In order to improve the accuracy of gearbox reliability analysis,a mining vehicle equipped with a 12 speed gearbox was taken as the research object.Based on the shifting rules of power and economy,a multi-gear gearbox simulation load spectrum acquisition method considering gear combination strategy was proposed by fully considering the allowable gears of different vehicle speeds.Based on the driver conditions of mining vehicle,the proposed method was used to obtain multi-gear gearbox simulation load spectrum,and compared with the simulation load spectrum obtained based on power and economic shifting schedule.The result show that compared with the traditional method of obtaining load spectrum based on shifting schedule,the proposed method obtains different critical gears.The critical gear obtained by traditional method is 6th gear,with a working time accounting for 53.25%,and the proportion(53.14%)is the highest in the load range of 2 000 N∙m～2 400 N∙m.The proposed method obtains the critical gear is 7th gear,with a working time accounting for 54.49%,and the proportion is the highest(52.78%)in the load range of 2 400 N∙m～2 800 N∙m.From the perspective of load accumulation,it can be observed that the obtained 7th gear load accumulation of the proposed method increases 2.33%compared with the obtained 6th gear load accumulation of the traditional method.The research result prove the effectiveness of the proposed method and lay the foundation for the reliability design of multi-gear gearbox.关键词
载荷谱/雨流计数法/动力性换挡/经济性换挡/多挡变速箱Key words
load spectrum/rain flow counting method/power shift/economic shift/multi-gear gearbox分类
交通工程引用本文复制引用
刘人萍,胡建军,薛首志,吕昌,孙丹丹..考虑挡位组合策略的多挡变速箱仿真载荷谱获取方法[J].重庆大学学报,2025,48(7):13-26,14.基金项目
江苏省科技成果转化专项资金项目(BA2022033) （BA2022033）
江苏省双创团队项目(JSSCTD202239) （JSSCTD202239）
重庆市技术创新与应用发展专项重点项目(CSTB2022TIAD-KPX0048).Supported by Jiangsu Provincial Science and Technology Achievement Transformation Special Project(BA2022033),Jiangsu Double Innovation Team Project(JSSCTD202239),and Technology Innovation and Application Development Project of Chongqing(CSTB2022TIAD-KPX0048). （CSTB2022TIAD-KPX0048）
