Magnetic rail brake for rail vehicles

摘要

The magnetic rail brake has rail brake magnets (5) whose excitation coils can be excited from a direct current source (1) for the purpose of braking and from an alternating current source (24) for the purpose of heating up the iron components of the rail brake magnets (5) at least while the magnetic rail brake is released. The heating of the iron components, in particular the base (6) of the rail brake magnets (5) eliminates or prevents ice and snow accumulating on the rail brake magnets (5) so that they can always be kept functional even when used under winter conditions. The alternating current source (24) can have a substantially higher voltage than the direct current source (1) and the alternating current excitation can be monitored by a thermostat switch (31) which is controlled in particular by the temperature of the iron components or the rail brake magnet (5). <IMAGE>