履带车辆终传动与行走系统过盈接触  

Interference contact between final drive and walking system for tracked vehicle

作　　者：张耀娟[1,2] 成凯[1] 周振平[1] 郑森[1] 徐晓龙[1] 刘维维[1] 

机构地区：[1]吉林大学机械科学与工程学院,长春130022 [2]北华大学机械工程学院,吉林省吉林市132021

出　　处：《吉林大学学报（工学版）》2014年第2期369-378,共10页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家科技部国际科技合作项目(2009DFR80010)

摘　　要：经研究发现,解决履带车辆终传动破坏失效问题的关键在于该类车辆终传动与行走系统过盈接触问题。将过盈接触零部件看作刚性体,利用变形协调关系建立终传动和行走系统过盈接触问题的力学模型与数学模型,从理论上进行了研究。通过有限元仿真分析方法,以实车参数为依据,与理论模型进行互相验证,结果表明两者吻合较好,证明了本文方法的有效性。研究发现,终传动破坏的主要原因是终传动大齿圈轮毂的强度不足,安全系数仅为2.6,在恶劣工况时大齿圈轮毂的失效导致整个终传动的失效破坏。研究结果为履带车辆终传动的优化与改进提供了理论依据和计算方法。The damage failure problem of the final drive of tracked vehicle was investigated. It was found that the interference contact between the final drive and the walking system is the key to solve the problem. First, the interference contact parts are taken as rigid bodies, and the mechanical model and mathematic model of the interference contact are established using the deformation compatibility relationship. Second, the finite element simulation method is employed to verify the proposed model using parameter of the practical vehicle. The finite element analysis results are in good agreement with that of proposed model, proving the effectiveness of the proposed method. Finally, it is found that the main reason of the final drive damage is the insufficient strength of the wheel hub of the large gear ring, whose factor of safety is only 2.6. This leads the failure of the wheel hub of the large gear ring under bad working condition, resulting in the failure damage of the final drive. This study provides theoretical basis for the optimization of the final drive of tracked vehicle.

关 键 词：机械工程 履带车辆 终传动与行走系统 过盈接触 超静定 

分 类 号：TH11[机械工程—机械设计及理论]