Research on the Matching Relationship between Backflow Device and Special Rail of Urban Rail Transit Vehicles
Journal Title: Urban Mass Transit - Year 2024, Vol 27, Issue 8
Abstract
Objective The stray current generated during the operation of urban rail transit vehicles with rail backflow method will cause electrical corrosion to nearby metal objects, while the special rail return mode can solve such problems. It is necessary to comprehensively analyze the matching relationship between the backflow device of urban rail transit vehicles and the special rail. Method Based on the structural parameters of bogies, backflow devices, running rails and special rails of urban rail transit vehicles, as well as their suspension parameters and gauges, a vertical and horizontal dimensional chain analysis method is innovatively established by analyzing the structural matching characteristics between the backflow device and the special rail. The spatial size matching relationship between the vehicle backflow device and the special rail of an urban rail transit vehicle under six working conditions is checked. The vehicle dynamics simulation model with backflow device is established by SIMPACK simulation software. Whether the vertical contact pressure between vehicle backflow device and special rail is within a reasonable range during train operation is analyzed under four working conditions. Result & Conclusion The checking of the spatial size matching relationship between the vehicle backflow device and the special rail shows that partial structure of the backflow device needs to be adjusted. Simulation analysis verifies that the vertical contact pressure between the vehicle backflow device and the special rail is within a reasonable range.
Authors and Affiliations
Yuanqing HUANG, Yumin LIU, Dongpo LIU, Xiaoli CHEN
Timing Design and Commissioning Scheme for Linkage between Urban Rail Transit Electric Passenger Car Doors and Platform Doors
Objective Realizing the synchronous linkage between electric passenger car doors and platform doors (hereinafter referred to as "car-platform doors") in urban rail transit can further improve the metro operation efficien...
Design and Realization of Urban Rail Transit AFC Intelligent Operation and Maintenance System Architecture Driven by Dual-core of Data and Model
Objective The traditional urban rail transit AFC (automatic fare collection) system suffers from maintenance problems such as slow speed, outdated method, unreasonable plan and high cost. It is necessary to adopt digital...
Application of Maximum Generalized Rayleigh Entropy in Diagnosing Train Air-conditioning Refrigerant Charge
Objective In diagnosing train air-conditioning refrigerant charge using machine learning methods, numerous features often appear, posing a dilemma in feature selection for diagnosis. Excessive feature selection leads to...
Research and Application of Train Communication Network Based on Time-sensitive Networking
Objective TCN (train communication networks) has complex topologies and requires high real-time transmission capabilities. Currently, train data transmission mainly relies on TRDP (train real-time data protocol) for carr...
Analysis of Factors Influencing Self-compacting Concrete Construction Quality for Prefabricated Track Slabs in Urban Rail Transit
Objective In response to the problems of narrow construction space, difficulty in controlling the construction quality of prefabricated track slab subgrade, and high requirements for the construction quality of self-comp...