压钩力下重载机车关键参数对其动力学性能的影响  

Influence of heavy-haul locomotive key parameters on its dynamic responses under coupler longitudinal compressions

作　　者：储高峰[1] 张志超[1] 李谷[1] 邹瑞明[2] 祖宏林[1] 朱俊廷[1] 

机构地区：[1]中国铁道科学研究院机车车辆研究所,北京100081 [2]西南交通大学牵引动力国家重点实验室,成都610031

出　　处：《北京交通大学学报》2015年第6期97-102,共6页JOURNAL OF BEIJING JIAOTONG UNIVERSITY

基　　金：国家自然科学青年基金资助项目(11202245)

摘　　要：采用某2(B0-B0)轴式机车动力学模型研究了纵向压钩力作用下,重载机车关键二系悬挂参数对机车运行动力学性能和车钩水平偏转行为的影响.动力学模型包括两节B0-B0机车和考虑缓冲器非线性迟滞特性、钩尾与前从板圆弧面间摩擦特性和钩尾扁销止挡特性的扁销钩缓装置.计算结果表明:机车二系横向止挡自由间隙和纵向间距、二系弹簧横向刚度对机车运行安全性指标有较大影响,随着二系横向止挡间隙和纵向间距的增大,当钩尾止挡不发挥作用时,机车轮轴横向力和车钩转角会逐渐增大,当钩尾止挡发挥作用后,钩尾止挡分担偏转力矩,机车轮轴横向力会逐渐减小;随着二系弹簧横向刚度的增大,机车自身稳钩能力增强,轮轴横向力和车钩转角逐渐减小.This paper investigates the influence of the key second suspension parameters of heavy haul locomotives on its running safety and the coupler rotation angle by the dynamic model of one 2（ B0- B0）locomotive. The model consists of two B0- B0 locomotive and the flattened pin coupler and buffer system which includes the nonlinear hysteretic buffer,the contact friction between two arc surfaces of coupler tail and following plate and the coupler rotation angle stop. Simulation results showed that the clearance and longitudinal distance of secondary lateral stops and the secondary lateral stiffness have significant effects on the locomotive running safety and the coupler rotation angle. With the increases of the clearance and longitudinal distance,the locomotive wheel lateral force and coupler rotation angle both increase when the coupler rotation angle stop does not work,and the wheel lateral force would decrease when the coupler rotation angle stop work. The increase of the secondary lateral stiffness makes the wheel lateral forces and coupler rotation angles increase gradually.

关 键 词：重载机车 钩缓装置 机车运行安全性 二系悬挂 车钩转角 

分 类 号：U260.34[机械工程—车辆工程]