Influence of Urban Rail Transit Carbody Vertical Vibration on Pantograph-catenary Current Collection Performance
Journal Title: Urban Mass Transit - Year 2024, Vol 27, Issue 4
Abstract
Objective Most existing studies on catenary system dynamics simulation are based on the assumption that the pantograph base has only longitudinal degrees of freedom, neglecting the influence of carbody vertical vibration induced by wheel-rail excitation on PC (pantograph-catenary) current collection performance. It is necessary to study the vehicle-pantograph-catenary system (hereinafter referred to as VPC) as a whole. Method Models of PC coupling dynamics and VPC multi-body dynamics are established for both rigid and flexible catenary types. Dynamic PC current collection tests are conducted on a case track, and the feasibility of the calculated results of rigid catenary VPC multi-body dynamics model is verified. Based on train speeds of 80 km/h, 90 km/h, 100 km/h, 110 km/h, and 120 km/h, two speed conditions are selected for the analysis of the vertical dynamic responses at the base of rigid catenary pantograph insulator. Comparative analysis of various dynamic response parameters of the pantograph models and VPC models for both catenary types are conducted under the above five speed conditions. Result & Conclusion The simulation calculation results of the established VPC multi-body dynamics model are reasonable. Carbody vibration has a certain influence on the pantograph current collection performance. Under flexible catenary, carbody vertical vibration has little impact on PC current collection performance, thus may be disregarded. Under rigid catenary, compared to the pantograph model without considering carbody vertical vibration, the PC statistically minimum contact pressure and the pantograph-head maximum lifting displacement calculated by the VPC model considering carbody vertical vibration increase with the increase of train operating speed. The maximum change rate of the PC statistically minimum contact pressure is 24.7%, and the maximum change rate of pantograph-head maximum lifting displacement is 4.2%.
Authors and Affiliations
Xiao DONG, Ning ZHOU, Xin ZHANG, Haifei WEI
Keywords
Related Articles
- EP ID EP734151
- DOI 10.16037/j.1007-869x.2024.04.005
- Views 31
- Downloads 0
Research on Adaptability of Zoning Fare System in Metropolitan Area Rail Transit
［Objective］ The zoning fare system is widely used in European rail transit systems, but has not yet been put into practice in many Chinese cities with rail transit operation. Following the rapid urban rail transit cons...
Calculation Method for Tunnel Fire Smoke Exhaust Volume with Point Smoke Exhaust Mode
Objective To address the lack of recognized numerical values and calculation methods for smoke exhaust volume of tunnel fire point smoke exhaust system specialized in GB 50016—2014 ′Code for fire protection design of bui...
Design and Applicability Analysis of Real-name Train-riding Scheme for City (Suburban) and Intercity Railways
Objective At present, there are no systematic research results on the real-name train-riding scheme yet for city (suburban) and intercity railways. Therefore, the implementation and construction of such system has no gui...
Deformation Law Analysis of Metro Station Deep Foundation Pit Constructed by Cover-Excavation Reverse Method in Sandy Area
Objective Stress deformation characteristics of the main structure in the process of metro station construction by cover-excavation reverse method are relatively complex. The construction mechanics process of the subway...
Tunnel Cross-section Optimization Design in Upper-soft Lower-hard Composite Strata Based on Lining Structure Minimum Bending Moment
Objective To effectively prevent lining damage and water leakage in tunnels, research is carried out on minimizing lining structure bending moment for tunnel cross-section in upper-soft lower-hard composite strata. Metho...