Study on the Viscoelastic Dynamic Sliding Friction Characteristics of Elevator Steel Belt Traction Wheel

doi:10.3901/JME.2025.19.157

Abstract

Abstract: Elevator traction steel belt is the core load-bearing and transmission component that replaces traditional steel wire rope to achieve elevator friction drive and lifting. However, it is prone to external viscoelastic coating wear during elevator operation, leading to degradation of steel belt performance and instability of friction transmission, seriously threatening the safety and reliability of the elevator system. To this end, the dynamic sliding friction pair of elevator steel belt traction wheel is taken as the research object, and a self-made steel belt friction and wear testing machine is used to conduct sliding friction tests on elevator steel belt under different contact loads and speeds. The variation law of the frictional characteristics of elevator traction steel belt is revealed, and the influence of the viscoelastic contact characteristics of the steel belt traction wheel sliding contact interface on friction, wear, and heat transfer performance is analyzed. The results show that the speed has a significant impact on the friction coefficient between the elevator steel belt and the traction wheel. Among them, influenced by schallamach waves, the average friction coefficient reaches its maximum value of about 0.51 at a speed of 0.5 m/s. The average friction coefficient of the elevator steel belt under different loads remains stable at around 0.4; The maximum friction temperature rise of the contact pair shows an overall upward trend, with a temperature rise of 80 ℃ at a speed of 1.25 m/s and a temperature rise exceeding 100 ℃ at a load of 500 N. The contact state between elevator steel belt and traction wheel mainly includes four stages: adhesion of viscoelastic coating layer, relative sliding between steel belt surface coating layer and traction wheel, third body rolling effect, and relative sliding between steel wire rope and traction wheel inside the steel belt. The wear mechanism of elevator traction steel belt gradually shifts from adhesive wear to three body abrasive wear, and finally to surface fatigue wear.

Key words: elevator steel belt, viscoelastic, friction, wear

CLC Number:

TH117

PENG Yuxing, ZHANG Xiuheng, CHANG Xiangdong, ZHOU Zhou, JIANG Gushuo, LU Hao, TANG Wei. Study on the Viscoelastic Dynamic Sliding Friction Characteristics of Elevator Steel Belt Traction Wheel[J]. Journal of Mechanical Engineering, 2025, 61(19): 157-169.

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