基于可靠性机械传动铰接车分动箱设计分析  

Optimization Design of Transfer Case in Mechanical-Driving Articulated Dump Truck Based on Reliability

作　　者：张鉴隆[1] 叶立清[1] 黄晓明[1] 邝芸[1] ZHANG Jian-long;YE Li-qing;HUANG Xiao-ming;KUANG Yun(Guangdong Lingnan Institute of Technology,Guangdong Guangzhou 510663,China)

机构地区：[1]广东岭南职业技术学院,广东广州510663

出　　处：《机械设计与制造》2018年第9期244-246,250,共4页Machinery Design & Manufacture

基　　金：广东省机械教指委教改项目(JZ201327C)

摘　　要：分动箱主要承担着按比例将动力分配给各驱动轴的任务,实现各种工况行驶需求。针对机械传动铰接车设计了一种具有高低档位变换、前后输出端差速及锁止功能的分动箱。该方案以可靠性为主要设计目标,结合整车性能需求,通过对分动箱结构解析、行星齿轮传动的参数化和离合器尺寸设计,以及分动箱系统可靠性建模仿真,创新设计行星齿轮系与锁止离合器相结合的变速结构,能够实现分动箱高低档位的切换,遵循结构同一性原则,差速锁止功能同样由离合器结构实现。基于Romax对传动系统进行仿真,得到其传动效率、可靠性指标、有效寿命等参数,得出分动箱整体运行工作特性。在标准规定的载荷谱下得到其齿轮应力状态、接触与弯曲安全系数、轴承有效寿命与损伤比等可靠性指标,验证系统优化设计的可行性。The transfer case mainly undertakes the task of distributing torque to different output ends with designated proportion,to achieve a variety of conditions driving demand,which can achieve variety conditions driving demand.To meet the requirements of mechanical-driving articulated dump truck,a transfer case with the function of shifting,differential and differential lock was designed.The transfer case was designed for the target of promoting reliability.Through explanting the traditional transfer case structure,parameterization design of planetary gear transmission,size design and calculation of clutch and reliability modeling simulation design of the overall system.Innovative designing the shift combination structure of planetary gear system and locking clutch,the transfer case have the function of shift,differential and differential locked.Based on Romax modeling software,the transmission system was analyzed,obtaining the parameters such as efficiency,reliability and service life,getting the overall performance of the transmission system.Under the standard load spectrum,the reliability indexes such as gear stress state,contact and bending safety factor,bearing effective life and damage ratio were obtained,and the feasibility of system optimization design was verified.

关 键 词：铰接车 分动箱 可靠性 模型 设计 

分 类 号：TH16[机械工程—机械制造及自动化] TH132.41