西南交通大学学报2026，Vol.61Issue(1)：234-242,9.DOI:10.3969/j.issn.0258-2724.20240031
三轴车中、后桥液压互联悬架的减振特性
Vibration Reduction Characteristics of Hydraulically Interconnected Suspension on Middle and Rear Axles of Three-Axle Vehicle
摘要
Abstract
The middle and rear axles of three-axle mining dump trucks are the main load-bearing axles,and their output characteristics influence the driving stability of the vehicles.To solve the load-bearing problem of mining dump trucks and improve the driving stability of the vehicles at the same time,a kind of hydraulically interconnected suspension was proposed.The impedance transfer matrix method was adopted to derive the flow-pressure relationship of the suspension,and the 1/2 vehicle mechanical-hydraulic coupling equation was obtained.The complete decoupling of body-wheel motion modes was realized by solving the system state matrix.Finally,the road obstacle experiment was carried out to investigate the operational characteristics of the suspension.The analysis results show that the suspension system reduces the natural frequency of body bounce motion,increases the damping ratio,attenuates the body bounce vibration quickly,and improves the dynamic load distribution of the middle and rear wheels.When the vehicle passes a 120 mm high triangular road obstacle at the speed of 15 km/h,the maximum pressure difference between the two oil cylinders of the hydraulically interconnected suspension is 1.15 MPa,and the maximum response time is 0.3 s.These are good to achieve uniform load.At the same time,the displacement of the two oil cylinders is basically equal,but the direction is opposite,which plays a good role of displacement compensation and helps to maintain the attitude of the body during travel.关键词
车辆悬架/三轴车/轮胎动载荷/频率频响/位移补偿Key words
vehicle suspension/three-axle vehicle/tire dynamic load/frequency response/displacement compensation分类
机械制造引用本文复制引用
索雪峰,刘湘,杜腾,焦生杰,王刚锋..三轴车中、后桥液压互联悬架的减振特性[J].西南交通大学学报,2026,61(1):234-242,9.基金项目
国家自然科学基金项目(12302110) 中央高校基本科研业务费专项(300102258110). （12302110）
