Secondary repair technology for municipal railway vehicle

Abstract

The invention discloses a secondary repair technology for a municipal railway vehicle. The technology includes the following steps that wheel-set tread diagnosis and pantograph detection are performed; vehicles are cleaned and enters a garage, wherein in the cleaning process, dust, oil stain and other dirt, caused by the operation and maintenance of the municipal vehicle, on the exterior surface of vehicles are cleaned; power outage and air supply of a contact system are performed; no-power repair operation is carried out and includes insulation testing, vehicle roof equipment and vehicle bottom equipment inspection, disassembly of a skirtboard and a bottom cover plate, cleaning of a filter net and filter cylinder, maintenance of the two sides of the bottom of the vehicle, and cab maintenance; power is supplied to the contact system; power-on operation is performed and includes cab power-on inspection and test, skirtboard and bottom cover plate installation state inspection, and disconnection of external air duct; equipment location and vehicle abnormal condition inspection are performed before leaving the garage. The secondary repair technology for the municipal railway vehicle can adapt to the characteristics of rapid start and stop of the municipal railway vehicle for efficient and adaptive maintenance.

Description

technical field [0001] The invention belongs to the technical field of urban railway maintenance, and more specifically relates to a secondary repair process for urban railway vehicles. Background technique [0002] The purpose of vehicle maintenance is to maintain and improve the basic performance of vehicles, ensure safe and reliable operation, and reduce vehicle failures. In terms of maintenance of urban vehicles, it is advisable to implement a maintenance system that combines "planned repair + status repair + balanced repair". Planned repair and state-of-the-art repair belong to preventive maintenance, which is dominated by planned repair and carried out according to time and mileage; state-of-the-art repair is to determine the maintenance timing according to the actual technical condition of the equipment. Balanced repair is to use the window of vehicle operation and outage to carry out maintenance on trains during non-operating hours and off-peak hours, and disperse t...

AI Technical Summary

Problems solved by technology

[0004] The current technical information mentions the maintenance process and specifications of high-speed rail, EMUs, and subways. However, on the one hand, there are no detailed procedures or details related to the maintenance of urban vehicles at all levels, such as the specific operation process of secondary repairs. Or the details of the process, which parts need to be overhauled for secondary maintenance; on the other hand, compared with the national railway or subway, the main parameters and performance of the vehicle in the outer city area are different, and its fast start and stop and large passenger capacity The characteristics of the rail transit will inevitably lead to different damages of its parts, and the service life is also different. Directly using other types of rail transit maintenance processes is not only inefficient, but may even cause problems such as mismatching, missed inspections, and improper maintenance.

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