Auxiliary maintenance method and system for urban rail vehicle, storage medium and computer equipment

The invention provides an auxiliary maintenance method and system for an urban rail vehicle, a storage medium and computer equipment, and the method comprises the steps: obtaining a unique identifier uploaded by scanning equipment, and obtaining the type information and key part information of a to-be-maintained vehicle according to the unique identifier; calling a virtual model corresponding to the unique identifier from a preset three-dimensional modeling database according to the to-be-overhauled vehicle type information and the key component information, wherein the virtual model corresponds to the target key component; performing angular point identification on the unique identifier to obtain at least one angular point region corresponding to the unique identifier according to an identification result, and calculating a scanning imaging parameter according to a pixel point coordinate corresponding to the angular point region; and determining position information of the target key component in a real spac