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Analys av pantograf WBL 88
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.).
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.).
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.).
2013 (Swedish)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesisAlternative title
Analysis of pantograph WBL 88 (English)
Abstract [sv]

På uppdrag av Järnvägsgruppen på KTH skulle interaktionen mellan kontaktledning och pantograf simuleras och analyseras. Detta för att kunna presentera ett förbättrat konstruktionsförslag på pantografen som skulle leda till en jämnare kontaktkraft vid höghastighetsdrift, 300 km/h. Den dynamiska simuleringen byggde på en befintlig pantograf, WBL 88, som tillverkas av Schunk och används i Sverige på höghastighetståget X2000. Kontaktledningen består av koppar som sprids i naturen när den nöts. Då kopparpartiklar är hälsofarligt har aluminium studerats och jämförts som en potentiell ersättare. Materialjämförelsen har behandlat nötningsvolym, konduktivitet, hållfasthet och miljöaspekter. För att kunna analysera interaktionen mellan kontaktledning och pantograf har den dynamiska simuleringen genomförts i MD Adams/View 2011 där pantografens parametrar varierats för att få en jämnare kontaktkraft. Materialjämförelsen grundar sig på beräkningar som kan relateras till materialens mekaniska egenskaper. Den dynamiska simuleringen gav en jämnare kontaktkraft genom att reducera kontaktskenans vikt samt öka dess fjäderstyvhet och dämpning. Dessa förändringar resulterade i att kontaktskenan lättare kunde följa kontaktledningen utan att tappa kontakten. Materialjämförelsen gav att koppar har för ändamålet och med befintlig utformning av kontaktledningen bättre mekaniska egenskaper än aluminium.

Abstract [en]

On behalf of the Railway Group at KTH the interaction between a pantograph and the overhead catenary wire was simulated and analyzed. The purpose of this was to present an improved design suggestion of the pantograph that would lead to a more even contact force at high speed operation, 300 km/h. The dynamic simulation was based on an existing pantograph, WBL 88, manufactured by Schunk and is currently used in Sweden on the highspeed train X2000. The catenary is made of copper which is spread in the environment due to wear. Since copper particles are harmful, aluminum has been studied and compared as an alternative material. The material comparison includes wear volume, conductivity, strength and environmental aspects. In order to analyze the interaction between the catenary and the pantograph, dynamic simulations were carried out in MD Adams/View 2011. During the simulations, the parameters of the pantograph have been varied to obtain an improved and more even contact force. The material comparison is based on calculations that can be related to the mechanical properties of the materials. The results of the dynamic simulation showed that by reducing the weight of the contact strip and increasing its spring stiffness and damping, the contact force became less varied and more even. The changes of the parameters lead to that the contact strip could more easily follow the catenary without losing contact. The material comparison showed that copper has better mechanical properties for the specific purpose than aluminum.

Place, publisher, year, edition, pages
2013. , 33 p.
Series
2013:012 MKNB 058
National Category
Mechanical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-175782OAI: oai:DiVA.org:kth-175782DiVA: diva2:862323
Supervisors
Examiners
Available from: 2015-11-03 Created: 2015-10-21 Last updated: 2015-11-03Bibliographically approved

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