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针对某单节八轴机车限界问题,提出了采用一系簧对置式转臂轴箱定位结构的解决方案,推导了该结构轴箱定位刚度的理论计算公式,利用多体动力学软件SIMPACK建立其物理模型,并通过该模型验证了轴箱定位刚度计算公式的正确性。结果表明:轴箱纵向定位刚度由转臂关节的径向刚度决定;轴箱横向定位刚度由转臂关节的轴向和径向刚度、一系簧横向水平刚度、一系簧偏置距离和轴颈跨距共同决定;轴箱垂向定位刚度由一系簧垂向刚度和一系簧偏置距离共同决定。
Aiming at the problem of a single-section eight-axle locomotive boundary, a solution of using a series of spring-mounted positioning solutions of pivoting arm-axle box is put forward. The theoretical calculation formula of the positioning rigidity of the structure axle box is deduced. The multi-body dynamics software SIMPACK Physical model, and through the model to verify the correctness of the calculation formula of axle box positioning stiffness. The results show that the longitudinal stiffness of the axle box is determined by the radial stiffness of the boom joint. The lateral stiffness of the axle box is determined by the axial and radial stiffness of the articulated arm, the horizontal horizontal stiffness of the primary spring, Neck span jointly decided; vertical axle positioning box stiffness by a spring vertical stiffness and a spring offset common determination.