Research on mechanism of resilient wheel sluggish movement and discussion on relevant solution

Abstract

Resilient wheels can effectively reduce the transmission of high frequency vibration and impact between wheel and rail, and reduce wheel/rail noise, so they are widely used in tramcars. However, in the process of application, it is found that there is relative rotational motion between the tyre and the wheel center, and the phenomenon of wheel sluggish movement is formed, which may affect the life of the wheel and the economy of operation, or even affect the safety of vehicle operation. In this paper, the performance of the rubber components of the resilient wheel, the anti-sluggish torque of the wheel and the difference of the vehicle vibration with or without wheel-rail lubrication were analyzed, and the vibration time and frequency diagram and the inherent frequency of the resilient wheel obtained by modal test were compared, which concluded that: the wheel sluggish movement of resilient wheels was caused by vehicle resonance when the vehicle passed through the small radius curve without lubrication between the wheel and the rail, the resonance energy caused the contact surface of the wheel center and the pressure ring and the resilient wheel rubber block to rotate and slip. In order to avoid the resonance, reasonable use of wheel-rail lubrication was proposed, and the resilient wheel sluggish movement was proved disappeared after application..

Keywords

• resilient wheel
• sluggish movement
• tram
• modal
• vibration
• lubrication
• simulation