基于AMESim的矿用自卸车悬架系统平顺性分析

刘启航; 冯汉队; 刘申; 李贝贝; 刘秀梅

doi:10.3969/j.issn.0258-2724.20230135

基于AMESim的矿用自卸车悬架系统平顺性分析

doi: 10.3969/j.issn.0258-2724.20230135

刘启航^1,,
冯汉队^{1, 2},
刘申¹,
李贝贝¹,
刘秀梅^1, ,

1.
中国矿业大学机电工程学院，江苏徐州 221116
2.
徐州徐工矿业机械有限公司，江苏徐州 210009

基金项目: 国家自然科学基金项目（51875559）

详细信息

作者简介:
刘启航（1995—），男，博士研究生，研究方向为流体传动与控制，E-mail：liuqhcumt@163.com

通讯作者:
刘秀梅（1982—），女，教授，研究方向为流体传动及控制，E-mail：liuxm@cumt.edu.cn

中图分类号: TH137
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- 文章访问数: 143
- HTML全文浏览量: 106
- PDF下载量: 32
- 被引次数: 0
出版历程
- 收稿日期: 2023-03-29
- 修回日期: 2023-07-09
- 网络出版日期: 2024-07-09

Ride Comfort Analysis of Suspension System of Mining Dump Truck Based on AMESim

LIU Qihang^1
,,
FENG Handui^{1, 2},
LIU Shen¹,
LI Beibei¹,
LIU Xiumei^{1
, ,}

1.
School of Mechanical and Electrical Engineering, China University of Mining and Technology, Xuzhou 221116, China
2.
XCMG Mining Machinery Limited Company, Xuzhou 210009, China

摘要

摘要:
矿用自卸车主要用于小型矿山运输，常在道路条件恶劣、超载严重等工况下工作. 油气悬架因其刚度和阻尼的非线性特性，能较好适应外载荷激励变化，在大型工程车辆中广泛应用. 以徐工生产的XDR80t型矿用自卸车为研究对象，针对采集到的轮胎质心加速度以及车身加速度数据，利用频域积分的方法求解活塞杆相对位移量数据. 采用AMESim仿真平台建立机液联合仿真模型，研究了不同悬架结构参数下车身振动特性的变化趋势. 研究发现：阻尼孔直径对于车身振动状态影响较为明显. 当阻尼孔直径由8 mm变化至14 mm时，加速度峰值减小约49.27%，均方根值RMS减少约49.42%，但相应的俯仰角却呈增加趋势；随着缸径/杆径由180/150 mm增加至200/170 mm，加速度峰值和RMS分别降低16.84%与18.62%；当预充压力从1.50 MPa增加至2.25 MPa时，加速度峰值及RMS均方根值分别减小27.67%及27.49%，俯仰角也减小.
- 矿用自卸车 /
- 油气悬架系统 /
- 频域积分 /
- AMESim仿真平台
Abstract:
Mining dump trucks are mainly used for small-scale mine transportation, often run on poor roads or with serious overloading and other conditions. Hydro-pneumatic suspension is widely used in large construction vehicles due to its nonlinear characteristics of stiffness and damping, which can better adapt to external load excitation changes. For the XDR80t mining dump truck produced by XCMG, the acceleration data of the tire center of mass and body were collected, and a method based on frequency domain integral was proposed to obtain the relative displacement data of the piston rod. AMESim simulation platform was used to establish a mechanical and hydraulic co-simulation model, and the variation trend of body vibration characteristics under different structural parameters of suspension was investigated. The results show that the damping hole diameter has a more obvious influence on the vibration state of the body. When the damping hole diameter is changed from 8 mm to 14 mm, the peak value of acceleration is reduced by about 49.27%, and the root mean square (RMS) value is reduced by about 49.42%. However, the pitch angle shows an increasing trend. With the increase in cylinder/rod diameter from 180/150 mm to 200/170 mm, the peak value of acceleration and RMS value decrease by 16.84% and 18.62%. When the pre-charge pressure is increased from 1.5 MPa to 2.25 MPa, the peak value of acceleration and RMS value decrease by 27.67% and 27.49%, and the pitch angle declines.
- mining dump truck /
- hydro-pneumatic suspension system /
- frequency domain integral /
- AMESim simulation platform

HTML全文

图 1 加速度传感器安装位置

Figure 1. Installation position of acceleration sensor

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图 2 典型加速度信号频域处理

Figure 2. Frequency domain processing of typical acceleration signals

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图 3 求解结果验证

Figure 3. Result verification

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图 4 误差分析

Figure 4. Error analysis

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图 5 4自由度互联悬架车辆模型

Figure 5. Vehicle model with four degrees of freedom interconnected suspension

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图 6 AMESim中后桥油气悬架仿真模型

Figure 6. AMESim simulation model of middle and rear axle hydro-pneumatic suspension

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图 7 二维机械结构模型

Figure 7. Two-dimensional mechanical structure model

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图 8 不同阻尼孔直径加速度对比曲线

Figure 8. Acceleration comparison curves of different damping hole diameters

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图 9 不同缸径/杆径加速度对比曲线

Figure 9. Acceleration comparison curves of different cylinder/rod diameters

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图 10 不同预充压力加速度对比曲线

Figure 10. Acceleration comparison curves of different pre-charge pressures

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图 11 车身振动俯仰角示意

Figure 11. Pitch angle of body vibration

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图 12 不同参数条件下车身振动俯仰角变化峰值

Figure 12. Variation peak of pitch angle of body vibration under different parameters

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表 1 二维机械模型关键节点坐标

Table 1. Key node coordinates of two-dimensional mechanical model

序号	节点含义	坐标/m
1	中油缸-车架铰接点	（−0.875，0.85）
2	后油缸-车架铰接点	（0.875，0.85）
3	稳定连杆-车架铰接点	（0，0.15）
4	中油缸-稳定连杆铰接点	（−0.9，0）
5	后油缸-稳定连杆铰接点	（0.9，0）
6	车架质心点	（0，0.567）

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表 2 油气悬架基本参数

Table 2. Basic parameters of hydro-pneumatic suspension

变量	取值
无杆腔直径^*/mm	180
活塞杆直径^*/mm	150
阻尼孔直径^*/mm	10
蓄能器预充压力^*/MPa	1.75
蓄能器体积/L	3.75
轴距/mm	1750
货物质量/t	15
车身质量/t	10
油液密度/（kg·m⁻³）	850

下载: 导出CSV

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