Common failure problems and corresponding strategies for walking wheels of coal mining machines

doi:10.13251/j.issn.0254-6051.2025.02.049

Abstract

Abstract: Walking wheel, as the actuator of the walking device of the coal mining machine, often suffers from tooth breakage accidents due to the effect of strong impact loads. This seriously affects the working efficiency and poses a threat to the personal safety of the operators. Thus firstly, the failure modes of the walking wheel, such as wear, tooth breakage, spalling and plastic deformation of the tooth surface were expounded. Subsequently, for the tooth breakage failure, the coping strategies were summarized, including optimizing the product design, rationally selecting materials, increasing the gear modulus, installing protective devices and optimizing the heat treatment process. Finally, the suggestion of combining traditional carburizing and quenching processes with Q-P-T processes was proposed for heat treatment of walking wheel to improve its strength and toughness.

Key words: coal mining machine, walking wheel, failure, measures

CLC Number:

TD421.6

He Xiao, Xu Hongxiang, Shi Lubing, Chen Shengchao, Li Ziyan, Rong Zeyu, Li Fuli. Common failure problems and corresponding strategies for walking wheels of coal mining machines[J]. Heat Treatment of Metals, 2025, 50(2): 304-311.

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