【摘要】 针对传统固定刚度的后横向稳定杆结构特性呈现非对称性，容易造成矿用自卸车行驶方向不稳定，并且存在跑偏、侧倾角波动大等问题，文中提出了一种可变刚度的新型后横向稳定杆，有效提高了矿用自卸车的抗侧倾特性。首先，介绍了新型后横向稳定杆的工作原理并给出了理论数学模型；其次，基于多体动力学仿真模拟，分别进行了脉冲工况、单边凸台工况和简谐激励工况下矿用自卸车侧倾瞬态响应分析，并计算了极限工况下前悬架和前后横向稳定杆载荷-时间历程变化情况。结果表明：新型后横向稳定杆的结构采用了瓦特连杆的对称性结构，较好地约束了矿用自卸车整体式车桥的侧向自由度，侧倾角、侧倾角角速度和载荷均得到降低，改善了矿用自卸车的行驶稳定性和舒适性。更多还原

【Abstract】 The structural properties of the traditional rear lateral stabilizer bar with constant stiffness are asymmetric, which results in the mining dump truck’s unstable direction as well as deviation and large fluctuation in the roll angle. In this article, a novel rear lateral stabilizer bar with variable stiffness is proposed, in order to improve the mining dump truck’s anti-roll characteristics. Firstly, efforts are made to explain the rear lateral stabilizer bar’s working principle and mathematical model in theory. Then, the simulation is carried out based on the multi-body dynamics, the transient response of the mining dump truck under the conditions of pulse, unilateral boss and simple harmonic excitation is explored respectively, and the changes in the load which is exerted on the front suspension and the front-and-rear lateral stabilizer bar under the extreme working conditions are identified. The results show that the new rear lateral stabilizer bar adopts the Watt connecting rod’s symmetrical structure, which effectively constrains the lateral freedom of the mining dump truck’s integral axle. The roll angle and its velocity, as well as the load have reduced, thus improving the mining dump truck’s driving stability and comfort.更多还原