DRUCKLUFT-ANTRIEBSEINRICHTUNG FUER EINEN STROMABNEHMER

摘要

Compressed air drives for current collectors advantageously have in the pressure line (6) leading to the lifting cylinder or lifting bellows (7) a pressure control system (8) consisting of a pressure control valve (9) and a throttle valve (10). However, disadvantages are produced by the interaction with the quick-acting venting valve usually used. By means of the elements of the pressure control system (8) the venting of the pressure line (6) required to lower the current collector (3) is throttled and as a result delayed. Therefore, according to the invention instead of a quick-acting venting valve a valve (11) which can be activated pneumatically via its own actuation line (15) is provided, the actuation line (15) of which valve (11) is connected to the pressure line (6) upstream of the pressure control system (8).