单节八轴机车转向架动力学研究

针对B0B0-B0B0轴式的单节八轴机车转向架结构,提出一种采用中间构架连接两台B0转向架实现三系悬挂支撑车体,并应用单牵引杆直接连接两轴构架与车体传递纵向力的结构形式。该方案结构简单并能实现高粘着利用率,具有可行性和良好的动力学性能。三系悬挂使得机车车体具有优良的平稳性,同速度等级和轴重的2C0机车进行对比计算,机车R300 m小半径曲线通过时,机车导向轮对轮轴横向力及导向轮轮缘磨耗因子相对2C0机车减小35%左右;R800 m半径曲线通过时,轮轴横向力减小15%,轮缘磨耗因子减小23%。

The bogie structure and dynamics studies of the eight-axle locomotive

A type of bogie structure was proposed for the eight-axle locomotive, of which the middel bogie forme was used to connect the two B0 bogie and support the car body with three suspensions. A single drawbar connect the B0 bogie and car body directly to transfer the longitudinal forces. This structure is simple and feasibility, which can achieve high adhesion availabillity and good dynamic performances. Three suspension can achieve a excellent stability of car body. Comparing with a same speed and axle load class 2C0 locomotive, the wheelset lateral force and wheel rim wear factor are reduced by about 35% at the R300 m small radius curves, and the wheelset lateral force is decreased by 15%, and the rim wear factor is reduced by 23% at the R800 m curves.