33t轴重重载机车轴重转移研究

Research on Axle Load Transfer on 33t Axle Load Heavy Haul Locomotive

提高重载机车黏着利用率的重要措施是有效减少轴重转移。总结研究轴重转移的传统方法,并从静力学观点出发,分析33t轴重重载机车的轴重转移原理。运用SIMPACK软件建立重载机车多体动力学模型,通过动力学仿真的方法分别分析浮动中心销牵引装置牵引点高度、悬挂参数和二系橡胶堆布置方式对机车黏着利用率的影响。研究结果表明:机车最佳牵引高度为0.62m;保证牵引点高度一定,机车的黏着利用率随一、二系垂向刚度的增大先增大后减小;对称布置和非对称布置的二系悬挂橡胶堆对应的机车黏着利用率有一定区别。

A significant method to improve the adhesion availability of heavy haul locomotive is effectively reducing axle load transfer.This paper summarizes the research methods of axle load transfer,and analyzes the principle about axle load transfer on 33 taxle load heavy locomotive from the viewpoint of statics.Multi-body dynamics model of heavy haul locomotive is established by SIMPACK.The impact of traction height of floating center pin and suspension parameters and arrangement of rubber compounds of secondary suspension on the adhesion availability of locomotive is analyzed through dynamics simulation.The results showe that：the best traction height is 0.62 m.Keeping traction height constant and with the increasing of primary and secondary suspension vertical rigidity,adhesion availability increases firstly and then decreases.There is difference on adhesion availability of locomotive between symmetrical arrangement and asymmetric arrangement of rubber compounds of secondary suspension.