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http://dx.doi.org/10.5370/KIEE.2016.65.6.1103

A Study on Performance Diagnosis of the Pulley Type Automatic Tensioning Device and Improvement of Maintenance  

Park, Hyun (Department of Railroad Electrical System Engineering, Woosong University)
Lho, Young Hwan (Department of Railroad Electrical System Engineering, Woosong University)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.65, no.6, 2016 , pp. 1103-1107 More about this Journal
Abstract
The automatic tensioning device of the catenary system constantly maintains the tension of the trolley wire by absorbing the variations due to the elasticity of the line caused by temperature variation. The tension plays an important role in affecting the electric motorcar operation directly. This paper suggests the methodology of the life cycle extension and the maintenance of the automatic tensioning device by means of performance diagnosis of the pulley type automatic tensioning device which has been commonly used for the electric railway system. Through conducting performance diagnosis and comparative test for the wornout pulley type automatic tensioning device by replacing the components such as the bearing and the bearing shaft without replacing all the assembly, the tensioning device is analyzed whether it is properly functioned. Provided that the maintenance regulation is reinforced so as to implement the bearing replacement through periodical precise inspection along with random check-up inspection which is now carried out by the operating organizations, it is ensured that the life cycle extension and the reduction of maintenance cost of the tensioning device could be achieved.
Keywords
Pulley type automatic tensioning device; Catenary system; Tensioning device maintenance; Electric railway system; Maintenance regulation; Catenary precise inspection;
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