High-speed Hybrid Ceramic Triboelectric Rolling Bearing with Revolution Stability Monitoring Characteristics

doi:10.3901/JME.2024.15.080

Abstract

Abstract: The reliability and stability of rolling bearing is the key factor that restricts the performance of high-speed rotating machinery. A high-speed hybrid ceramic triboelectric rolling bearing is developed to provide real-time dynamic behavior and stability monitoring. The crown cage with one side opening is adopted in the bearing. The ceramic balls are used as the dielectric material. A floating roll-slip combined freestanding triboelectric nanogenerator is formed by combining the ceramic balls and the interdigital electrode which set on the bearing end cover. Under the traction of the inner and outer raceways, the dielectric ceramic ball spins and revolves, and then sweeps the electrode to generate alternating current. The frequency characteristics and transient characteristics of electrical signals can be used as indicators to evaluate bearing skidding and cage stability. The effects of working condition such as radial load and rotational speed, and structural parameters such as electrode size and ball material on the output performance of triboelectric bearing are studied. The results show that the absolute skidding speed of ball increases significantly with the increase of rotational speed under light radial load. As the radial load increases, the rotation stability of the cage decreases. The bearing has achieved stable output under DN value of 450 000 r/min·mm. A durability test of 30 million revolutions has been completed. The research provides technical reference for intelligent design of high-speed rolling bearings.

Key words: triboelectric effect, stability, ceramic ball, rolling element bearing, skidding

CLC Number:

TG156

GAO Shuai, HAN Qinkai, CHU Fulei. High-speed Hybrid Ceramic Triboelectric Rolling Bearing with Revolution Stability Monitoring Characteristics[J]. Journal of Mechanical Engineering, 2024, 60(15): 80-88.

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