Rail mounting device and method for fixing rails to reinforced concrete railway sleeper

Abstract

The object of the invention also relates to a method for fixing railway rails (12) to reinforced concrete sleepers (14).

1 . Rail mounting device for fixing a railway rail to a reinforced concrete sleeper which device has a non-fixing first state and a rail fixing second state, and which device contains an anchoring element fixed to the reinforced concrete sleeper provided with an open or closed bracket piece, and a rail-clamping plate partially or entirely encompassed by the bracket piece of the anchoring element, wherein the rail-clamping plate is a flexible flat plate, and the anchoring element of the rail mounting device has an upper surface which is substantially flat and which is at an angle to the upper plane of the reinforced concrete sleeper such that the distance between the first edge of the upper surface of the anchoring element closer to the rail and the upper plane of the reinforced concrete sleeper is smaller than the distance between the second edge of the upper surface of the anchoring element more distant from the rail and the upper plane of the reinforced concrete sleeper, and in the first state of the rail mounting device the rail-clamping plate lies on the upper surface of the anchoring element, whereby the rail-clamping plate is also arranged at an angle to the upper plane of the reinforced concrete sleeper and in the second state of the rail mounting device, the rail-clamping plate is fixed to the anchoring element so that a first end of the rail-clamping plate closer to the rail lies on the base of the rail and the shape of the rail-clamping plate is a convex curve viewed from the direction of the upper plane of the reinforced concrete sleeper and in the first state of the rail mounting device, the angle between the rail-clamping plate and the upper plane of the reinforced concrete sleeper is between 5 to 20 degrees and the rail-clamping plate is made from a cut sheet steel having a thickness of maximum 6 mm. 
     
     
         2 . Rail mounting device according to  claim 1 , wherein in the first state of the rail mounting device, the angle between the rail-clamping plate and the upper plane of the reinforced concrete sleeper is between 10 to 15 degrees. 
     
     
         3 . Rail mounting device according to  claim 1 , wherein the anchoring element is fixed to the reinforced concrete sleeper with a bolt. 
     
     
         4 . Rail mounting device according to  claim 1 , wherein the anchoring element has a lower fixing piece concreted into the reinforced concrete sleeper. 
     
     
         5 . Rail mounting device according to  claim 1 , wherein the anchoring element is a structurally unitary element. 
     
     
         6 . Rail mounting device according to  claim 1 , wherein the reinforced concrete sleeper has a first surface and a second surface protruding out of the plane of the first surface, and the anchoring element rests on the first and second surfaces. 
     
     
         7 . Rail mounting device according to  claim 6 , wherein the vertical thickness of the anchoring element resting on the second surface is less than the vertical thickness of the part resting on the first surface. 
     
     
         8 . Rail mounting device according to  claim 1 , wherein the end of the anchoring element more distant from the rail is provided with a flange preventing the movement of the rail-clamping plate in the case that the rail mounting device is in its second state. 
     
     
         9 . Rail mounting device according to  claim 1 , wherein a distal end portion of the rail-clamping plate and the anchoring element are provided with a depression and a protrusion sized to be received into the depression and together forming a retention lock preventing the rail mounting device from reverting from the rail fixing second state to the non-fixing first state. 
     
     
         10 . Rail mounting device according to  claim 1 , wherein an end portion of the rail-clamping plate contacting the rail is provided with an electrically insulating covering. 
     
     
         11 . Rail mounting device according to  claim 1 , wherein an electrically insulating spacer element is arranged on the rail side of the anchoring element fixed to the reinforced concrete sleeper. 
     
     
         12 . A method for fixing a railway rail to a reinforced concrete sleeper comprising the steps:
 providing a rail mounting device according to  claim 1  in its first state in the vicinity of the railway rail in such a way that one end of the rail-clamping plate of the rail mounting device encompassed by the bracket piece faces towards the railway rail,   pushing the rail-clamping plate towards the rail, thereby forcing the one end of the rail-clamping plate against the base of the rail and lifting it vertically, creating spring force in the rail-clamping plate, then   fixing the rail-clamping plate to the anchoring element, thereby moving the rail mounting device from the first state to the second state of fixing the rail.   
     
     
         13 . The method according to  claim 12 , wherein a rail mounting device is provided on each of two sides of the railway rail. 
     
     
         14 . Rail mounting device according to  claim 1 , wherein the anchoring element is a metal casting. 
     
     
         15 . Rail mounting device according to  claim 11 , wherein the electrically insulating spacer element is a plastic. 
     
     
         16 . A mounting device for a rail having a rail base which comprises an anchoring element which defines an inclined plane and is adapted for attachment to a reinforced concrete sleeper, a bracket attached to the anchoring element, and a flexible rail clamping plate slidably positioned on the inclined plane and at least partially encompassed by the bracket.