Pressurised air supply device for a current collector

摘要

The device has a pressure reservoir (DB) with an input side that is subjected to pressure from a pressure main line (HD). An output side of the reservoir is connected with a pneumatic lifting drive for pantograph via a valve (M). The input side of the pressure reservoir is connected with a compressed air flask (DF) via a pressure-reducing device (DM), a non return valve (R2) or a shut off valve (AV), where pressure in the flask is measured such that the pressure reservoir is selectively supplied with the pressure via the compressed air flask.