Brake device for a rail vehicle

Abstract

A brake device is disclosed for rail vehicles. In at least one embodiment, the brake device includes an electromagnetic spring pressure brake, the brake force being applied by an elastic force to the part to be braked and a magnetic arrangement being provided for neutralizing the brake force. The magnetic arrangement counteracts the elastic force and consists of a coil arrangement and an armature place that are mobile in relation to each other, the mobile part being connected to the brake element that impinges the part to be braked. The brake device for a rail vehicle according to at least one embodiment of the invention allows a high brake force and short reaction times and is very compact. For this purpose, the mobile part is connected to an axially displaceable plunger which on one end can be impinged upon with the elastic force and which is connected on the other end to the brake element.

1 . A brake arrangement for rail vehicles, comprising:
 an electromagnetic spring pressure brake, a brake force is being appliable by spring force to a part to be braked, to the brake force; and   a magnet arrangement to acts against the spring force, the magnet arrangement including a coil arrangement and an armature plate, the coil arrangement with armature plate being movable relative to each other, a moving part of the magnet arrangement being connected to a brake device acting on the part to be braked, wherein the moving part is connected to an axially displaceable plunger which is subjectable to the spring force and which is connected to the brake device, the magnet arrangement further including an electromagnet configured as a U-shaped yoke with inner winding.   
   
   
       2 . The brake arrangement as claimed in  claim 1 , wherein the winding is configured as a separate winding over the U-shaped yoke. 
   
   
       3 . The brake arrangement as claimed in  claim 1 , wherein the magnet arrangement includes two U-shaped yokes, and wherein the winding is configured as a ring winding over both U-shaped yokes. 
   
   
       4 . A brake arrangement for rail vehicles, comprising:
 an electromagnetic spring pressure brake, a brake force is being appliable by spring force to a part to be braked, to neutralize the brake force; and   a magnet arrangement to acts against the spring force, the magnet arrangement including a coil arrangement and an armature plate, the coil arrangement and the armature plate being movable relative to each other, a moving part of the magnet arrangement being connected to a brake device acting on the part to be braked, wherein the moving part is connected to an axially displaceable plunger which is subjectable to the spring force and which is connected to the brake device, the coil arrangement, on a face facing the armature plate, being additionally provided with a permanent magnet, a magnetic force of the permanent magnet being less than the spring force.   
   
   
       5 . A brake arrangement for rail vehicles, comprising:
 an electromagnetic spring pressure brake, a brake force being appliable by spring force to a part to be braked, to neutralize the brake force; and   a magnet arrangement to acts against the spring force, including a coil arrangement and an armature plate, the coil arrangement and the armature plate being movable relative to each other, a moving part of the magnetic arrangement being connected to a brake device acting on the part to be braked, wherein the moving part is connected to an axially displaceable plunger which is subjectable to the spring force and which is connected to the brake device, the magnet arrangement being located in a housing which is mounted on bearings such that it is longitudinally displaceable in relation to a motional direction of the plunger.   
   
   
       6 . The brake arrangement as claimed in  claim 5 , wherein the housing is longitudinally displaceable via a drive. 
   
   
       7 . The brake arrangement as claimed in  claim 6 , wherein the housing is longitudinally displaceable via a pinion drive. 
   
   
       8 . The brake arrangement as claimed in  claims 5 , wherein the moving part is the armature plate. 
   
   
       9 . The brake arrangement as claimed in  claim 8 , wherein the housing accommodates both the spring for the spring force, a part of the plunger facing the spring and the armature plate, and a part of the plunger which faces away from the spring, jutting out of the housing. 
   
   
       10 . The brake arrangement as claimed in  claims 1 , wherein the coil arrangement and the armature plate surround the plunger in a ring shape. 
   
   
       11 . The brake arrangement as claimed in  claim 1 , wherein the coil arrangement and the armature plate are of rectangular configuration. 
   
   
       12 . The brake arrangement as claimed in  claim 1 , wherein a plurality of coil arrangements and associated armature plates are arranged one behind the other on the plunger. 
   
   
       13 . (canceled) 
   
   
       14 . (canceled) 
   
   
       15 . The brake arrangement as claimed in  claim 1 , wherein the moving part is the armature plate. 
   
   
       16 . The brake arrangement as claimed in  claim 4 , wherein the moving part is the armature plate. 
   
   
       17 . The brake arrangement as claimed in  claim 4 , wherein the coil arrangement and the armature plate surround the plunger in a ring shape. 
   
   
       18 . The brake arrangement as claimed in  claim 4 , wherein the coil arrangement and the armature plate are of rectangular configuration. 
   
   
       19 . The brake arrangement as claimed in  claim 4 , wherein a plurality of coil arrangements and associated armature plates are arranged one behind the other on the plunger. 
   
   
       20 . The brake arrangement as claimed in  claim 5 , wherein the coil arrangement and the armature plate surround the plunger in a ring shape. 
   
   
       21 . The brake arrangement as claimed in  claim 5 , wherein the coil arrangement and the armature plate are of rectangular configuration. 
   
   
       22 . The brake arrangement as claimed in  claim 5 , wherein a plurality of coil arrangements and associated armature plates are arranged one behind the other on the plunger.