Due to the high-speed operation of trains, some fastenings of the overhead contact system may become loose due to vibrations, especially during the extremely cold winter weather and peak passenger flow periods when the frequency of train operations increases. To ensure the safety of railway transportation, maintenance workers of the overhead contact system utilize maintenance windows to conduct comprehensive inspections of the system’s condition. They focus on inspecting and addressing possible looseness, detachment, jamming, and breakage of various components of the overhead contact system.
Lifting, pushing, and hanging—after a series of flexible maneuvers, Chen Chen effortlessly hangs the grounding rod on the cantilever arm. Similarly, Su Herui completed the first step of the online inspection in just 2 minutes. Among the employees at the Harbin Power Supply Depot of CR-Harbin, there are a total of 14 individuals born after 1995, like Su Herui, affectionately nicknamed the “female flying warriors” by their male colleagues.
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