Study on Delayed Lateral Displacement of Elastic Wheels in a Certain Type of Tram

Abstract

Objective The delayed lateral displacement of elastic wheels occurs in a certain type of tram during servive, significantly affecting the safe operation and maintenance of the vehicle. Method Experimental research is conducted using methods such as quality inspection of elastic wheels, train mainline testing, and simulation calculations to analyze the causes of delayed lateral displacement of wheels in depth. Result & Conclusion The analysis results indicate that the inherent product performance of elastic wheels meets the standards and service requirements, with high stability and reliability. The vibration level of trains in small curve sections is higher than that in straight sections, with a root mean square value of vertical vibration reaching 2.77g. Moreover, there is a vibration dominant frequency of 300 to 450 Hz in curve sections, matching the natural modal frequency of the elastic wheels at 340.37 Hz, resulting in coupling resonance between the wheels and the rai in this section. Therefore, it is recommended that in the operation and maintenance of the wheel-rail railway lubrication operations should be strengthened on one hand and the inspection frequency of rail corrugation in small curve sections be increased on the other hand to reduce the wheel-rail friction coefficient and improve the operating environment for wheel maintenance.

Keywords

• tram
• elastic wheel
• delay line
• vibration
• lubrication