复合载荷下双列圆锥滚子轴承接触刚度的影响分析。

Foshan Graduate School of Innovation, Northeastern University, Foshan 528311, China.

School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110819, China.

Sensors (Basel). 2023 May 22;23(10):4967. doi: 10.3390/s23104967.

Double-row tapered roller bearings have been widely used in various equipment recently due to their compact structure and ability to withstand large loads. The dynamic stiffness is composed of contact stiffness, oil film stiffness and support stiffness, and the contact stiffness has the most significant influence on the dynamic performance of the bearing. There are few studies on the contact stiffness of double-row tapered roller bearings. Firstly, the contact mechanics calculation model of double-row tapered roller bearing under composite loads has been established. On this basis, the influence of load distribution of double-row tapered roller bearing is analyzed, and the calculation model of contact stiffness of double-row tapered roller bearing is obtained according to the relationship between overall stiffness and local stiffness of bearing. Based on the established stiffness model, the influence of different working conditions on the contact stiffness of the bearing is simulated and analyzed, and the effects of radial load, axial load, bending moment load, speed, preload, and deflection angle on the contact stiffness of double row tapered roller bearings have been revealed. Finally, by comparing the results with Adams simulation results, the error is within 8%, which verifies the validity and accuracy of the proposed model and method. The research content of this paper provides theoretical support for the design of double-row tapered roller bearings and the identification of bearing performance parameters under complex loads.

近年来，由于双列圆锥滚子轴承具有结构紧凑、承载能力大等优点，在各种设备中得到了广泛的应用。动态刚度由接触刚度、油膜刚度和支承刚度组成，其中接触刚度对轴承的动态性能影响最大。关于双列圆锥滚子轴承接触刚度的研究较少。首先，建立了复合载荷下双列圆锥滚子轴承的接触力学计算模型。在此基础上，分析了双列圆锥滚子轴承的载荷分布影响，根据轴承整体刚度与局部刚度的关系，得出了双列圆锥滚子轴承接触刚度的计算模型。基于建立的刚度模型，对不同工况下轴承接触刚度的影响进行了模拟分析，揭示了径向载荷、轴向载荷、弯矩载荷、转速、预紧力和偏转角对双列圆锥滚子轴承接触刚度的影响。最后，通过与 Adams 仿真结果进行比较，误差在 8%以内，验证了所提出模型和方法的有效性和准确性。本文的研究内容为双列圆锥滚子轴承的设计和复杂载荷下轴承性能参数的识别提供了理论支持。