Abstract: Based on the electrical characteristics of the point machine contact group in the switch circuit, this paper systematically studies and analyzes the reliability connection of the point machine contact group from the two working conditions of dynamic process and static use, provides suggestions for the optimization of contact group by analyzing the results, and summarizes the key points of daily maintenance for on-site maintenance.

Key words: point machine, contact group, service stability

摘要： 针对转辙机接点组在道岔电路中的电气特性，从转辙机动态过程和静态使用两种工作状态对接点组稳定性进行系统的研究分析，并通过分析结果为接点组优化提供建议，为现场维护归纳了日常维护要点。

关键词: 转辙机, 接点组, 使用稳定性