Improvement of aerial crossings design
The most vulnerable devices on catenary system are aerial crossings, which are in constant contact with current collectors of electric rolling stock. Reliability of catenary system depends largely on their proper installation and adjustment. The paper reviews the existing devices, technical standards and operational features of these units and proposes the use of a special aerial crossing lock, which does not require the presence of a support structure. The use of this unit is especially relevant during reconstruction of station catenary system in locations where installation of new supports is impossible due to constraint environment. The proposed unit was used by the author at one of the stations of South Ural Railway – branch of JSC «Russian Railways».