转K7型转向架轮对径向装置抗剪刚度设计

周张义; 李芾; 李亨利; 潘树平; 黄运华

doi:10.19818/j.cnki.1671-1637.2013.02.007

转K7型转向架轮对径向装置抗剪刚度设计

doi: 10.19818/j.cnki.1671-1637.2013.02.007

周张义^{1, 2,},
李芾¹,
李亨利²,
潘树平²,
黄运华¹

1.
西南交通大学机械工程学院, 四川成都 610031
2.
南车眉山车辆有限公司产品开发部, 四川眉山 620032

基金项目:

国家自然科学基金项目 50821063

国家863计划项目 2008AA030706

中央高校基本科研业务费专项资金项目 swJTU11BR022

中央高校基本科研业务费专项资金项目 sWJTU12CX041

详细信息

作者简介:
周张义(1982-), 男, 山西霍州人, 西南交通大学讲师, 工学博士, 从事机车车辆结构研究

中图分类号: U270.33
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出版历程
- 收稿日期: 2012-11-20
- 刊出日期: 2013-04-25

Design of shear stiffness of wheelsets radial device for K7 bogie

1.
School of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031, Sichuan, China
2.
Department of Product Development, CSR Meishan Rolling Stock Co., Ltd., Meishan 620032, Sichuan, China

More Information

Author Bio:
ZHOU Zhang-yi(1982-), male, lecturer, PhD, +86-28-87601321, zhouzhangyi@yeah.net

Article Text (Baidu Translation)

摘要

摘要: 针对转K7型副构架式自导向径向转向架, 通过相关结构受力与刚度串并联关系分析, 明确了决定其轮对径向装置抗剪刚度的几何和刚度参数, 构建了抗剪刚度的数学计算公式。基于车辆系统动力学分析技术, 确定了转K7型转向架轮对径向装置所需抗剪刚度为11 MN·m^-1。考虑转向架结构实际受限条件, 对轮对径向装置各组成件的几何和刚度参数进行匹配设计。首先设计确定出对角斜撑角和连接杆轴向拉压刚度分别为42°和150 MN·m^-1, 然后使用抗剪刚度数学计算公式导出所需的副构架结构横向刚度应不小于23.6 MN·m^-1, 进而按该参数要求对副构架结构进行相应设计。考虑部件间接触配合关系, 建立了轮对径向装置的高仿真非线性有限元装配体分析模型。计算结果表明: 结构横向刚度为24 MN·m^-1, 达到了轮对径向装置抗剪刚度的设计要求; 抗剪刚度为所需设计值11 MN·m^-1, 验证了抗剪刚度数学计算公式和设计方法的可靠性。
- 车辆工程 /
- 转K7型转向架 /
- 轮对径向装置 /
- 抗剪刚度设计 /
- 动力学分析 /
- 有限元法
Abstract: Through analyzing the stress and stiffness series parallel relations of correlative structures, the geometry and stiffness parameters determining the shear stiffness of wheelsets radial device for K7 sub-frame self-steering radial bogie were defined, and the mathematic calculating formula for the shear stiffness of wheelsets radial device was established. Based on vehicle system dynamics analysis technology, the required shear stiffness of wheelsets radial device was determined as 11 MN·m^-1. Considering the practical constrained conditions of bogie structures, the matching design of geometry and stiffness parameters for the components of wheelsets radial device was carried out. First of all, the diagonal brace angle and axial tension-compression stiffness of link bar were respectively determined as 42° and 150 MN·m^-1. Further, the required structural transverse stiffness of sub-frame, deduced by the mathematic calculating formula of shear stiffness, should not be below 23.6 MN·m^-1. Then, aiming at the requirement of the parameters, the corresponding structural design of sub-frame was carried out. Considering the contact fitting relations among different components, the high-precise nonlinear FE assembly analysis model of wheelsets radial device was established. Calculation result shows that the final structural transverse stiffness is 24 MN·m^-1, so the design requirement for the shear stiffness of wheelsets radial device is achieved. The calculated shear stiffness is 11 MN·m^-1 and equals to the required design value, so the reliability of mathematic calculating formula and design method for the shear stiffness is verified.
- vehicle engineering /
- K7 bogie /
- wheelsets radial device /
- design of shear stiffness /
- dynamics analysis /
- FEM

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图 1 转K7型转向架轮对径向装置

Figure 1. Wheelsets radial device of K7 bogie

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图 2 抗剪刚度定义

Figure 2. Definition of shear stiffness

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图 3 车辆系统动力学模型

Figure 3. Vehicle system dynamics model

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图 4 空车蛇行临界速度

Figure 4. Critical hunting speed of empty car

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图 5 连接杆轴向拉压刚度

Figure 5. Axial tension-compression stiffness of link bar

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图 6 副构架结构横向刚度

Figure 6. Structural transverse stiffness of sub-frame

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图 7 整体有限元模型

Figure 7. Overall FEM

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图 8 对角斜撑局部模型

Figure 8. Local model of diagonal brace

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图 9 抗剪刚度计算结果

Figure 9. Calculating result of shear stiffness

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图 10 刚性转动铰接触计算结果

Figure 10. Contacting calculating results of rigid revolute joints

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表 1 重车曲线通过计算结果

Table 1. Curve negotiating calculating result of heavy car

等效对角斜撑刚度/(MN·m^-1)	轮轨横向力/kN	导向轮对冲角/(°)	整车磨耗功率/(kN·m·s^-1)
4	25.9	0.237	0.378
6	29.9	0.272	0.459
8	33.2	0.297	0.546
10	35.0	0.313	0.628
20	37.9	0.353	0.827
30	38.4	0.369	0.905
50	39.1	0.382	0.969

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