Magnetic levitation train provided with an eddy-current brake
A magnetic levitation railway having an eddy-current brake ( 20 ) cooperates with a reaction rail ( 8 ) of the driveway ( 2 ). The eddy-current brake ( 20 ) has at least one brake magnet ( 21 ) which is movably mounted to the vehicle ( 1 ) and transversely to the reaction rail ( 8 ) and which is made to abut the reaction rail ( 8 ) if a normal force, for example, fixed by means of springs ( 27 ) is exceeded.
1. A magnetic levitation railway, comprising:
a driveway ( 2 , 3 ) having a reaction rail ( 8 ); and
a vehicle ( 1 ) being movably arranged on the driveway in parallel to said reaction rail ( 8 ) and being provided with an eddy-current brake ( 20 ), said eddy-current brake ( 20 ) having at least one brake magnet ( 21 ) destined to cooperate with the reaction rail ( 8 ) and to keep a certain distance to said reaction rail, said at least one brake magnet ( 21 ) having at least one magnet pole provided with a winding ( 25 ), said magnet pole developing apart from a braking force acting in the direction of travel also a normal force acting vertically to the reaction rail ( 8 ) and depending on the travel speed when said winding ( 25 ) is excited,
wherein said brake magnet ( 21 ) includes a gliding plate ( 34 ) and movably mounted to the vehicle ( 1 ) and transversely to the reaction rail ( 8 ) in such a manner that said at least one brake magnet ( 21 ) abuts said reaction rail ( 8 ) with said gliding plate ( 34 ) when a normal force exceeds a pre-determined value, wherein a frictional force occurring as soon as the at least one brake magnet ( 21 ) rests against the reaction rail ( 8 ) renders an additional braking effect, and wherein said gliding plate ( 34 ) covers said windings of said brake magnet ( 21 ).
2. A magnetic levitation railway according to claim 1 , wherein the abutment of the brake magnet ( 21 ) to the reaction rail ( 8 ) is done automatically.
3. A magnetic levitation railway according to claim 1 , wherein the brake magnet ( 21 ) is held by at least one pre-tensioned spring ( 27 ) to said vehicle ( 1 ).
4. A magnetic levitation railway according to claim 3 , wherein said spring ( 27 ) when said brake magnet ( 21 ) abuts said reaction rail ( 8 ) exerts a reset force on the brake magnet ( 21 ) being smaller than a pre-determined pull-out force for said reaction rail ( 8 ).
5. A magnetic levitation railway according to claim 3 , wherein said spring ( 27 ) has a flat spring load characteristic curve.
6. A magnetic levitation vehicle for magnetic levitation railways, wherein said vehicle is equipped with an eddy-current brake ( 20 ), said eddy-current brake ( 20 ) having at least one brake magnet ( 21 ) destined to cooperate with the reaction rail ( 8 ) and to keep a certain distance to said reaction rail, said brake magnet ( 21 ) having at least one magnet pole provided with a winding ( 25 ), said magnet pole developing apart from a braking force acting in the direction of travel also a normal force acting vertically to the reaction rail ( 8 ) and depending on the travel speed when said winding ( 25 ) is excited,
wherein said brake magnet ( 21 ) includes a gliding plate ( 34 ) and movably mounted to the vehicle ( 1 ) and transversely to the reaction rail ( 8 ) in such a manner that said at least one brake magnet ( 21 ) abuts said reaction rail ( 8 ) with said gliding plate ( 34 ) when a normal force exceeds a pre-determined value, wherein a frictional force occurring as soon as the at least one brake magnet ( 21 ) rests against the reaction rail ( 8 ) renders an additional braking effect, and wherein said gliding plate ( 34 ) covers said windings of said brake magnet ( 21 ).